U.S. patent application number 16/784315 was filed with the patent office on 2020-06-04 for tractor system and method.
This patent application is currently assigned to Venture Products, Inc.. The applicant listed for this patent is Venture Products, Inc.. Invention is credited to Mark E. Steiner, Roy I. Steiner.
Application Number | 20200170170 16/784315 |
Document ID | / |
Family ID | 58103210 |
Filed Date | 2020-06-04 |
United States Patent
Application |
20200170170 |
Kind Code |
A1 |
Steiner; Roy I. ; et
al. |
June 4, 2020 |
TRACTOR SYSTEM AND METHOD
Abstract
An attachment system for removably attaching an implement under
a vehicle. The mounting system includes a vehicle frame. The
vehicle frame has a pair of spaced apart frame portions. Each of a
pair of hitch receiving points is connectable with a respective one
of the frame portions. An implement includes support structure
extending for a length. A pair of hitch pins is associated with the
support structure. The hitch pins are spaced apart in a direction
along the length of the support structure. Each hitch pin is for
attachment to a respective one of the hitch receiving points. A
structural member is associated with the support structure and has
a portion adapted to attach to structure outboard of a frame
portion. A lift mechanism is connectable with a portion of the
vehicle frame. The lift mechanism is attachable with the structural
member to move the hitch pins relative to the hitch receiving
points.
Inventors: |
Steiner; Roy I.; (Dalton,
OH) ; Steiner; Mark E.; (Dalton, OH) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Venture Products, Inc. |
Orrville |
OH |
US |
|
|
Assignee: |
Venture Products, Inc.
Orrville
OH
|
Family ID: |
58103210 |
Appl. No.: |
16/784315 |
Filed: |
February 7, 2020 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
|
|
15241126 |
Aug 19, 2016 |
10568254 |
|
|
16784315 |
|
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62209945 |
Aug 26, 2015 |
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Current U.S.
Class: |
1/1 |
Current CPC
Class: |
A01B 59/065 20130101;
A01B 59/066 20130101; B62D 49/065 20130101 |
International
Class: |
A01B 59/06 20060101
A01B059/06; B62D 49/06 20060101 B62D049/06 |
Claims
1. An implement mounting hitch comprising: a first hitch receiving
point connectable with a first frame portion of a vehicle behind a
front wheel of the vehicle and ahead of a rear wheel of the
vehicle; a second hitch receiving point transversely spaced from
the first hitch receiving point and connectable with a second frame
portion of the vehicle and behind the front wheel of the vehicle
and ahead of the rear wheel of the vehicle; and an implement having
a support structure, a first hitch pin for operable connection to
the first hitch receiving point, and a second hitch pin for
operable connection to the second hitch receiving point; wherein
the first and second hitch receiving points are operable to support
the weight of the implement beneath the vehicle via the first and
second hitch pins.
2. The implement mounting hitch of claim 1 further comprising: a
first chain in operable communication with the first hitch
receiving point; and a second chain in operable communication with
the second hitch receiving point.
3. The implement mounting hitch of claim 2 wherein the first chain
is operable to support the first hitch receiving point and the
second chain is operable to support the second hitch receiving
point.
4. The implement mounting hitch of claim 3 wherein the first and
second chains are further operable to support the weight of the
implement when the first and second hitch pins are engaged with the
first and second hitch receiving points.
5. The implement mounting hitch of claim 2 further comprising: an
inner frame unit in operable communication with the first and
second chains opposite the first and second hitch receiving points;
a depth control linkage in operable communication with the inner
frame unit on a first end; and a depth control lever in operable
communication with a second end of the depth control linkage.
6. The implement mounting hitch of claim 5 wherein the inner frame
unit is rotatably mounted between the first and second frame
portions of the vehicle.
7. The implement mounting hitch of claim 6 wherein the depth
control lever is operable to raise and lower a height of the first
and second hitch receiving points via the interaction of the depth
control lever with the depth control linkage and the inner frame
unit.
8. An implement lift for a vehicle comprising: a vertical support
beam removably connected to a frame of the vehicle; a crane arm in
operable communication with the vertical support beam; a winch
connected to the vertical support beam at a first end of the crane
arm; and a pulley connected to a second end of the crane arm
opposite the winch; wherein the vertical support beam, winch, crane
arm, and pulley are rotatable about an axis defined by the vertical
support beam.
9. The implement lift of claim 8 wherein the vertical support beam
is removably connected to a front end of the frame of the
vehicle.
10. The implement lift of claim 8 wherein the vertical support beam
is pivotable relative to the vehicle frame between a first position
wherein the crane arm extends over the vehicle and a second
position wherein the crane arm extends away from the vehicle.
11. The implement lift of claim 8 wherein the vertical support beam
is movable to a plurality of positions on the vehicle frame.
12. The implement lift of claim 8 further comprising: a hoisting
line in operable communication with the winch, crane arm, and
pulley for hoisting an implement for connection to the vehicle.
13. The implement lift of claim 12 wherein the hoisting line
further comprises: a belt having an implement attachment clip at an
end thereof for operable attachment to the implement.
14. The implement lift of claim 8 wherein the vertical support beam
is removably connected to the frame of the vehicle outside of a
longitudinal centerline of the vehicle.
15. The implement lift of claim 14 wherein the implement lift is
movable between a first position wherein an implement attached to
the implement lift is supported outside of the frame of the vehicle
and a second position wherein the implement attached to the
implement lift is supported under the frame of the vehicle.
16. A method of installing an implement on a vehicle comprising:
attaching an implement to a hoisting line of an implement lift;
raising the implement with the implement lift; supporting the
implement via the implement lift at a first position outside the
frame of a vehicle; rotating the implement lift to move the
implement from the first position to a second position wherein the
implement is supported beneath the frame of the vehicle and between
a front wheel and a rear wheel of the vehicle; lowering the
implement with the implement lift to engage a pair of hitch pins
carried by the implement with a pair of hitch receiving points
operable connected to the vehicle; disconnecting the implement from
the hoisting line; and rotating the implement lift away from the
implement.
17. The method of claim 16 wherein supporting the implement via the
implement lift is accomplished with a single connection point
between the implement and the implement lift.
18. The method of claim 17 wherein attaching the implement to the
hoisting line of the implement lift further comprises: connecting
an implement attachment clip of the hoisting line to an eyehook of
a lift bar extending upwards from an offset support structure of
the implement and towards a midpoint of the implement.
19. The method of claim 17 wherein raising the implement with the
implement lift further comprises: transferring the weight of the
implement to the implement lift via a winch in operable
communication with the implement lift.
20. The method of claim 16 further comprising: removing the
implement from the vehicle; and installing a second implement on
the vehicle.
21. The method of claim 20 wherein removing the implement from the
vehicle further comprises: reattaching the implement to the
implement lift; raising the implement via the implement lift;
rotating the implement lift to move the implement from the second
position to the first position; lowering the implement; and
disconnecting the implement from the implement lift.
22. The method of claim 21 wherein installing the second implement
further comprises: moving the vehicle to a second position to
engage the second implement; and installing the second implement on
the vehicle.
Description
CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] This application is a continuation of U.S. patent
application Ser. No. 15/241,126 filed on Aug. 19, 2016, which
claims the benefit of U.S. Provisional Patent Application Ser. No.
62/209,945 filed on Aug. 26, 2015.
TECHNICAL FIELD
[0002] This disclosure generally relates to tractors having
interchangeable implements. More particularly, this disclosure
relates to an installation/removal system for agricultural tractors
that utilize interchangeable implements.
BACKGROUND
Background Information
[0003] For many years, the agricultural industry utilized tractors
featuring the ability to accommodate interchangeable implements. A
tractor with the ability to accommodate interchangeable implements
is particularly beneficial to farm or agricultural operations as it
allows a single tractor to perform multiple functions. Thus, the
need for multiple tractors that are intended for specific
particular functions is eliminated, which reduces operational
costs.
[0004] Typically, interchangeable implements are either attached to
the tractor on an attachment hitch system located on the rear of
the tractor and are pulled behind the tractor during operation.
Some larger tractors provide for attachment of implements to the
front of the tractor using a front attachment hitch system that is
similar in concept to the rear attachment hitch system. Such front
attachment hitch systems are not commonly employed on tractors that
are used in some farm or agricultural operations. Alternately, the
implements are attached to an attachment hitch system that is
located in a midsection of the tractor beneath a tractor frame.
[0005] In tractors that feature the rear attachment hitch system to
accommodate implements, installation/removal of the implements can
be relatively simple. To attach or install an implement, a tractor
operator is only required to back up the tractor so that the
implement is in close proximity to the rear attachment hitch
system. The implement is then lifted and attached to the rear
attachment hitch system. These implement installation/removal
systems that feature the attachment of implements to the rear
attachment hitch system of tractors may be adequate for many
applications. A major disadvantage of such systems is that the
operator of the tractor is unable to see the implement during
operation of the tractor without physically looking backwards,
which can affect forward looking vision, steering accuracy and
operator comfort.
[0006] In some uses of the tractor, it is beneficial for the
operator of a tractor to view the attached implement during use. A
tractor that features an implement installation/removal system
which allows for mounting or installation of the implement
underneath the frame, and visible to the operator during use, is
generally desirable. Conventional methods of mounting/installing
and detaching/removing implements from tractors featuring
attachment of the implement under the tractor frame can be complex
and time consuming. This is due in large part to the hitch system
design that is used to secure the implement to the tractor.
[0007] In prior art installation/removal systems for implements
installed under the tractor frame, a three-point or four-point
hitch system is generally utilized to secure the implement in place
during operation of the equipment. Typically for a three-point
hitch system, the implement rests on two hitch points attached to
the tractor frame on each side of the tractor so that the implement
is centered relative to the frame. A bracket is attached to the
center of the implement and extends upwardly from the implement.
The bracket is mechanically attached to a third hitch point located
about on or near the longitudinal centerline of the tractor frame
by bolts or other means known in the art. Attachment of the
implement to the two hitch points that the implement rests on and
the third hitch point that is typically located on the longitudinal
centerline of the tractor frame adequately secures the implement
under the frame during normal operation of the equipment. For a
four-point hitch system, a similar configuration is employed, with
the exception that the third hitch point is replaced by two
spaced-apart hitch points located on either side of the
longitudinal centerline of the tractor frame.
[0008] In a conventional change-out of implements that are
installed underneath the frame, the operator of the tractor must
first drive the tractor to a suitable lifting device, such as a
crane, which typically is often located remotely from the tractor.
To detach or remove the implement, the operator must attach the
crane to the bracket that is attached to the middle of the
implement. Because the implement bracket is centered relative to
the implement, attachment to the implement bracket is necessary to
ensure a balanced lift of the implement from two hitch points of
the three-point hitch during removal of the implement. Once the
crane is attached to the implement bracket, the operator must then
remove the structure securing the bracket to the third hitch point
that is located on the longitudinal centerline of the tractor
frame. The operator must then hoist the implement utilizing the
attached crane high enough to ensure that the implement clears the
two hitch points upon which the implement rests located on each
side of the tractor frame.
[0009] Once the implement is free from the two hitch points, the
operator must maneuver the implement from under the tractor frame
towards one side of the tractor. Because of interference from the
frame and the various frame components, to successfully remove the
implement completely from under the tractor, the operator must
perform a series of lift/release, movement and
attachment/deattachment of the crane to the implement bracket in
order to successfully maneuver the implement from beneath the
tractor. To attach a new implement to the tractor frame, the
operator may then have to drive the tractor to another location
near the new implement, move the crane to the location of the new
implement, and perform the removal steps previously described in
reverse. If a single operator is performing the
removal/installation of implements the removal of an implement and
the subsequent installation of a new implement can result in a
significant amount of time that the tractor is unavailable.
[0010] An alternative to the use of a crane is a carrier system, in
which the implement is placed on a carrier that includes wheels or
rollers. The carrier is rolled to the tractor and the implement
being removed is placed on the carrier and rolled away. The
implement being installed on the tractor is then placed on the
carrier and rolled over to the tractor. However, the carrier system
requires additional ground clearance on the part of the tractor due
to the height of the wheels or rollers on the carrier and must be
located near the implement change-out station. Further, the wheels
or rollers do not function well on rough, uneven dirt, mud or
gravel surfaces that are common in many farm or agricultural
operations. As a result, carrier systems are often undesirable for
tractors that are used on such farms or agricultural operations.
Another installation/removal alternative is for the operator to use
a loader, such as a front end loader or skid steer, to support and
life the implement. Another common alternative is for one or two
people to physically maneuver the implement onto or off of the
hitch points under the frame. This method requires physical
exertion and can be risky.
[0011] As a result, there are disadvantages associated with
conventional implement installation/removal systems for
agricultural tractors featuring the ability to accommodate
interchangeable implements under the tractor. Thus, there is a need
for an implement installation/removal system that provides the
advantages of an implement installed under the tractor, while
providing operators the ability to quickly change-out implements,
significantly reduce equipment unavailability.
SUMMARY
[0012] This summary is provided to introduce concepts in a form
that are described below in the detailed description. This summary
is not intended to identify key factors or essential features of
the claimed subject matter, nor is it intended to be used to limit
the scope of the claimed subject matter.
[0013] The implement installation/removal system for agricultural
tractor implements, and method of using the system of the disclosed
subject matter overcomes the disadvantages of conventional
installation/removal systems. Specifically, the disclosed subject
matter is directed to a self-contained implement
installation/removal system featuring a crane and a modified
three-point hitch, which allows for quick removal/installation of
implements under the tractor, thereby significantly reducing
equipment unavailability. This can be particularly attractive for
many farm or agricultural operations.
[0014] A mounting system for removable attachment of an implement
to a vehicle such as a tractor, is disclosed according to one
aspect. The mounting system includes a vehicle frame. The vehicle
frame has a pair of spaced apart frame portions extending in
substantially the same direction. The mounting system also includes
a pair of hitch receiving points. Each hitch receiving point is
connected to respective structure that is attached to the frame. An
implement includes support structure that extends for a length. Two
hitch pins are associated with the support structure. The hitch
pins are spaced apart in a direction along the length of the
support structure. Each one of the hitch pins is for attachment to
a respective one of the hitch receiving points. A structural member
is associated with the support structure and has a portion adapted
to attach to structure outboard of a frame portion. A lift
mechanism is connectable with a portion of the vehicle frame. The
lift mechanism is connectable with the structural member outside of
the vehicle frame to move the hitch pins relative to the hitch
receiving points. The implement can then be moved from under the
tractor.
[0015] The structural member is attached to the implement at a
location offset in a direction along the length of the implement
from the midpoint of the length of the implement. The structural
member may be located entirely outward of the vehicle frame. The
attachment system includes a link that is removably attachable
between the structural member and the vehicle frame. The attachment
system also includes a lift bar connectable with the structural
member and has a portion extending in a direction towards a
midpoint of the implement. The lift bar is constructed and
positioned when attached to the structural member so the vehicle
frame does not impede removal and installation of the
implement.
[0016] A method of mounting or dismounting an implement under a
vehicle, according to another aspect, includes providing a vehicle
having a vehicle frame with a pair of spaced apart frame portions
that extend in substantially the same direction. A pair of hitch
receiving points is connect to the vehicle frame. Each hitch
receiving point connects with a respective structure that is
attached to the frame. An implement is provided that includes
support structure extending for a length. A pair of hitch pins is
associated with the support structure and spaced apart in a
direction along the length of the support structure. Each hitch pin
is for attachment to a respective one of the hitch receiving
points. A structural member is associated with the support
structure and has a portion adapted to attach to structure outboard
of a frame portion. The implement is mounted or dismounted with a
lift mechanism connected with a frame portion of the vehicle frame.
The lift mechanism attaches to a lift bar that is attached to the
structural member to move the hitch pins relative to the hitch
receiving points.
[0017] An implement mounting, according to yet another aspect, has
a 3-point mounting hitch structure for removable attachment to a
vehicle. The vehicle has a vehicle frame with a pair of spaced
apart frame portions extending in substantially the same direction.
A pair of hitch receiving points is provided. Each hitch receiving
point is connectable with a respective structure that is attached
to the frame. The implement includes support structure extending
for a length. A pair of hitch pins is associated with the support
structure. The hitch pins are spaced apart in a direction along the
length of the support structure. Each hitch pin is for operative
attachment to a respective one of the hitch receiving points. A
structural member is associated with the support structure. The
structural member has a portion offset from the midpoint of the
length of the support structure.
BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS
[0018] The following description and drawings set forth certain
illustrative aspects and implementations of the disclosed subject
matter. These are indicative of but a few of the various ways in
which one or more aspects and implementations may be employed.
Further features will become apparent from reading the following
description with reference to the accompanying drawings, in
which:
[0019] FIG. 1 is a left side elevation view of a tractor, showing
an implement installed under the frame of the tractor utilizing a
conventional three-point hitch of the prior art;
[0020] FIG. 2 is a perspective view of a tractor, showing an
implement installed under the frame of the tractor utilizing the
implement installation/removal system according to one aspect;
[0021] FIG. 3 is a side elevational view of the tractor and
implement illustrated in FIG. 2;
[0022] FIG. 4 is a view of the tractor similar to FIG. 2, with the
implement in a removed position;
[0023] FIG. 5 is a rear perspective view of the tractor of FIG. 2,
illustrating a modified three-point hitch according to another
aspect;
DETAILED DESCRIPTION
[0024] The subject matter is described with reference to the
drawings, in which like reference numerals are used to refer to
like elements throughout the description. In the description, for
purposes of explanation, numerous specific details are set forth in
order to provide an understanding of the disclosed and claimed
subject matter. It will be understood, however, that the disclosed
subject matter can be practiced without these specific details.
[0025] An implement installation/removal system, according to one
aspect of this disclosure, overcomes the disadvantages associated
with prior art installation/removal systems for implements that are
installed under a tractor frame. Specifically, the implement
installation/removal system features the ability to accommodate
interchangeable implements by providing a modified three-point
hitch system and integral lift mechanism for securing implements
under the tractor frame. This implement installation/removal system
allows simple and quick removal/installation of implements under a
tractor so the operator may observe the implement in use.
[0026] More specifically, the implement installation/removal system
according to one aspect, utilizes a modified three-point hitch
which features two hitch pins attached under each side of the
tractor frame, on which the implement rests. A structural member is
used to mechanically attach the implement to a location outside of
the tractor frame. In additional, the system features a crane that
is removably installed on the tractor frame at the time of
installation or removal of implements. This allows for easy and
convenient attachment with the structural member to assist in
mounting/installing or dismounting/removing the implement under the
tractor frame.
[0027] The structural member allows attachment of the implement by
the crane at a location outside of the tractor frame so only a
single lifting operation is required to install and remove the
implement. When the crane is attached to the implement bracket only
a relatively simple arcuate movement is required to move the
implement under the tractor. The simple removal/installation of
tractor implements installed under the tractor frame significantly
reduces implement change-out time, and thus significantly reduces
equipment downtown and operational costs.
[0028] In order to better understand the implement
installation/removal system according to one aspect, the
environment in which it operates will now be described. A tractor
10 featuring a conventional implement installation/removal system
is shown in FIG. 1 Tractor 10 has a frame 12, an engine (not
shown), a steering gear system (not shown), a pair of front wheels
18, a pair of rear wheels 20, a transmission (not shown), an
operator seat 22, and a steering wheel 24, as is known.
[0029] The frame 12 includes a pair of longitudinally extending
frame rails 13 positioned on opposite sides of the tractor 10 and
having a mid-portion formed in a generally C-shaped configuration.
With respect to tractor 10, the majority of components positioned
on one side of the vehicle will have correspondingly similar
components positioned on the other side of the vehicle.
Accordingly, in this description, when reference is made to a
particular component of the tractor 10, it will be understood that
a similar component is present on the opposite side of the tractor,
unless otherwise apparent.
[0030] Frame rails 13 have a forward extending front frame section
19, an implement accommodating middle frame section 21, and a
longitudinally extending rear frame section 17. Frame rails 13 have
a plurality of cross braces (now shown) welded between the frame
rails to provide additional support to frame 12 and accommodate
tractor components in a known manner.
[0031] Each longitudinally extending rear frame section 17 includes
an axle housing (not shown) with a rear drive axle 26 transversely
extending through the rear longitudinal frame sections. Rear wheels
20 are rotatably mounted to opposite end portions of the drive axle
26 located outward of the rear frame sections 17 of the tractor
10.
[0032] The engine 16 is attached to the transmission as is known.
The transmission has a transmission output shaft (not shown), which
is attached to drive axle 26 by coupling structure, such as
sheaves, pulleys, belt or chain. The output of the engine 16 is
transferred to the transmission, through one or more gear ratios,
and then is transferred to drive axle 26 which drives rear wheels
20. The operator seat 22 is mounted to frame 12 as is known. The
steering gear system includes a steering shaft 33 that extends to
and connects to steering wheel 24, thereby enabling the operator to
turn front wheels 18, as is known.
[0033] An implement hitch bracket 30 is welded or otherwise rigidly
attached to each longitudinally extending rear frame section 17 and
extends rearward from the back end of the frame section. A rear
implement three-point hitch receiver device 32 is attached to
implement hitch bracket 30. An implement (not shown) rests on two
lower points of implement three-point hitch receiver 32 that are
centered relative to the longitudinal centerline of frame 12. In
conventional attachment of a rear implement, a bracket (not shown)
is mechanically or rigidly attached at about the center of the
implement. A top link (not shown) is used to attach the implement
bracket to tractor 10 at about the longitudinal center of frame 12.
The top link cooperates with the two lower points to enable the
implement three-point hitch receiver device 32 to secure a rear
implement to the tractor 10.
[0034] Implement accommodating middle frame section 21 extends
upwardly and longitudinally from the front end of the rear frame
section 17, and is continuously formed with the front frame section
19. Situated in this manner, middle frame section 21 creates a
downward facing C-shape portion in frame 12 that is capable of
accommodating the installation and operation of an implement 34
below the frame 12 of the tractor 10.
[0035] Front frame section 19 features a downwardly extending side
portion 36. A three-point implement hitch receiver 38 is pivotally
mounted to the side portion 36 by mechanical means such as bolts or
other suitable means known in the art. A plate or inner frame unit
46 is pivotally connected to the inboard surfaces of each implement
accommodating middle frame section 21 and is attached to each
implement hitch receiver 38 by a chain 39 or other means known in
the art. A depth control lever 42 is attached to middle frame
section 21 and is reachable by an operator in seat 22. A linkage 44
extends between and is mechanically attached to inner frame until
46 and depth control lever 42. Attached in this manner, depth
control lever 42 provides a way to enable adjustment of the depth
of the attached implement 34 during operation of tractor 10. It is
also common for the operator to use hydraulic assist to adjust
depth of the implement 34 and to lift or lower the implement.
[0036] The implement 34 rests across each implement hitch receiver
38 so that it is centered under implement accommodating middle
frame section 21. A bracket 48 is attached to the implement 34 at
about the center of the implement length and extends upwardly from
the implement. Bracket 48 is mechanically attached to a crossbeam
(not shown) of frame rail 13 on the longitudinal centerline of the
frame 12 by bolts or other means. Additionally, a bracket 48 has an
attachment point (not shown) for attaching lifting structure, such
as a crane (not shown), to the bracket during removal/installation
of the implement 34.
[0037] Because bracket 48 is attached with frame rail 13 at the
longitudinal centerline of the frame, removal/installation of
implement 34 utilizing a separate crane mechanism is a particularly
complex and time consuming operation because the bracket is located
between components of the frame 12. Such installation/removal
requires numerous lifts/releases and attachments/reattachments of
the crane (not shown) to the implement in order to maneuver the
implement 34 from under tractor 10 and around the frame 12.
[0038] The structure and method of the disclosed subject matter
overcomes the disadvantages associated with prior art implement
installation/removal systems by providing a modified three-point
hitch on the tractor, a modified implement and an integrated
on-board lift capability which allow for quick and simplified
installation/removal. With reference to FIG. 2, a tractor 100
utilizes an implement installation/removal system with a modified
three-point hitch attachment system 102 according to one aspect.
Tractor 100 is similar in general structure to prior art tractor
10. For the purposes of convenience, only those features that are
relevant to the disclosed subject matter will be described in
detail with regard to tractor 100.
[0039] The tractor 100 generally has a frame 112, an engine 116, a
steering system 123, a pair of front wheels 118, a pair of rear
wheels 120, an operator seat 122, and a steering wheel 124. Frame
112 includes a pair of longitudinally extending portions or frame
rails 113 positioned on opposite sides of the tractor and having a
mid-portion with a generally C-shaped configuration. The frame
rails 113 extend in substantially the same direction, and
preferably parallel to one another. With respect to tractor 100,
the majority of components positioned on one side of the tractor
100 will have correspondingly similar components positioned on the
other side of the tractor. Accordingly, in this description, when
reference is made to a particular frame component of the tractor
100, it will be understood that a similar component is present on
the opposite side of the tractor, unless otherwise apparent or
stated.
[0040] Each frame rail 113 has a forward extending front frame
section 119, an implement accommodating middle frame section 121,
and a rear longitudinally extending rear frame section 117 (FIG.
3). Frame rails 113 feature a plurality of cross braces 125 welded
between the frame rails to provide support to the frame 112 and
accommodate tractor components.
[0041] Each rear frame section 117 supports an axle housing (not
shown), which permits a rear drive axle 126 (FIG. 3) to
transversely extend through the rear frame sections. The rear
wheels 120 are rotatably mounted on drive axle 126 outboard of each
longitudinally extending rear frame section 117. The engine 116 and
the operator seat 122 are operatively mounted to frame 112.
[0042] With reference to FIGS. 2 and 4, each front frame section
119 of the frame rail 113 features a crane port 210 integrally
formed in the front of each front frame section. The crane ports
210 extend in a substantially vertical direction, as viewed in
FIGS. 2-4. A lifting mechanism, such as a crane 200, is removably
installed in one of the crane ports 210. As illustrated, each crane
port 210 is located outwardof the longitudinal centerline of frame
112. It will be apparent that a crane port 210 could be suitably
located anywhere along the cross brace 125 of the frame 112.
[0043] The crane 200 includes a vertical support beam 212 (FIGS.
2-4). A crane arm 214 extends from, and is fixed to, the vertical
support beam 212 by suitable means, such as welding or mechanical
fasteners. A lower portion of the vertical support beam 212 is
received in the vertical crane port 210 so that the vertical
support beam may freely rotate within the crane port and about a
longitudinal central axis of the vertical support beam. Installed
in this manner, the crane arm 214 may pivot three hundred and sixty
degrees around the longitudinal central axis of the vertical
support beam 212 and the vertical crane port 210. It will be
appreciated that there may be structure or an adapter that fits
within the crane port 210 that may receive a portion of the support
beam 212 of the crane 200.
[0044] A belt winch 216 is fixed to the vertical support beam 212
near an end of the crane arm 214 that is attached to the support
beam. A winch pulley 222 is attached to an opposite end of the
crane arm 214. A belt 217 extends from belt winch 216 through winch
pulley 222, and is attached to an implement attachment clip 220.
Operation of a winch crank 215 enable attachment clip 220 to be
raised and lowered. Alternatively, other means of hoisting, such as
an electric winch, cable, chain and/or rope, may be utilized in
conjunction with crane 200 during installation/removal of the
implement, as will be described.
[0045] With reference to FIGS. 2-4, the tractor 100 features the
modified three-point hitch attachment system 102 for securing the
implement 134 under the frame 112 at the implement accommodating
middle frame section 121. The modified three-point hitch attachment
system 102 includes two upward facing hitch receiving points 139
(best seen in FIG. 4) and a top link 152. Each hitch receiving
point 139 is defined by a surface for supporting the implement 134
with an open end portion facing upwardly.
[0046] A downwardly extending arm portion 136 is fixed to front
frame section 119. Each of a pair of implement lift arms 138 is
pivotally mounted to each downwardly extending arm portion 136 by
mechanical means such as pins or bolts, and enables the lift arm to
pivot upwardly and downwardly. The implement lift arm 138 extends
rearward under the implement accommodating middle frame section
121. The upward facing hitch receiving point 139 is located on a
rearward portion of the implement lift arm 138.
[0047] An implement depth inner frame until 146 is pivotally
connected to the inboard surfaces of each implement accommodating
middle frame sections 121 by mechanical means. Preferably, the
depth inner frame unit 146 is attached to an implement lift arm 138
by a chain 137. A depth control lever 142 is pivotally attached to
implement accommodating middle frame section 121 of the frame rail
113 (FIG. 3) by mechanical means. A depth control linkage 144
mechanically attaches to inner frame unit 146 and lever arm
actuator 142. Attached in this manner, when moved by a vehicle
operator, depth control lever 142 can change depth adjustment of
the implement 134 during operation of tractor 100. The operator may
use hydraulic or electric assist to raise and lower the implement
134.
[0048] The implement 134 includes support structure, such as a
metal bar, that extends for a length L (FIG. 4) and has a central
portion or midpoint M at the middle of the length. The implement
134 may be any suitable implement, such as a tiller, planter,
cultivator, hoe, disc, mower, scraper blade and the like. As
installed on the tractor 100, the implement 134 has a pair of hitch
pins 140 that rest across respective hitch receiving points 139 of
implement lift arms 138. Optionally, the hitch pins 140 may be in
the form of a single continuous bar or rod. The implement 134 is
substantially centered relative to longitudinal centerline of the
frame 112. A structural member 148 is attached to the implement 134
and is spaced from the midpoint M of the implement. The structural
member 148 extends upwardly from implement 134 so that the inboard
surface of the structural member is located outside of the
outermost surface of middle frame section 121 when the hitch pins
140 of the implement are received by the hitch receiving points
139. The implement 134 may include structure (not shown)
reinforcing and connecting the implement and structural member
148.
[0049] A lift bar 160 is mechanically and removably attachable to
the top of structural member 148 by bolts or other suitable known
means. The lift bar 160 extends upwardly and inwardly over the
implement 134 and frame 112 of the tractor 100. An eyehook 162 is
welded or otherwise rigidly attached to the upper and inwardly
extending end of lift bar 160 at a location about at the
longitudinal centerline of the frame 112 of the tractor 100 when
the implement is mounted on the lift arms 138 and about at the
midpoint M of the implement 134. The eyehook 162 provides a means
for attaching crane attachment clip 220 with the implement 134
during installation/removal of the implement from the tractor 100.
The lift bar 160 preferably extends inwardly over frame 112 to a
distance near and above the midpoint M, that enables the upward
force exerted by crane 200, when implement 134 is lifted, to evenly
counterbalance the downward force of the implement, resulting in
horizontal balance or level of the implement during lifting. The
lift bar 160 is typically is not attached to the structural member
148 when the implement 134 is not being installed on or removed
from the tractor 100.
[0050] The structural member 148 is formed with a plurality of
vertically aligned openings 150 (FIG. 3) for adjusting the pitch of
the implement 134. The top link 152, featuring a pin and link
construction, is mechanically and pivotally attached to a selected
one of openings 150 by suitable means, such as a bolt 155 and a nut
156. Top link 152 also is removably attached to front frame section
119 by a spring-loaded lock pin 154. Spring-loaded lock pin 154
provides for quick release of top link 152 from front frame section
119. Together, the top link 152 and hitch receiving points 139 form
part of the modified three-point hitch attachment system 102, which
provides a means to secure implement 134 underneath tractor
100.
[0051] The modified three-point hitch attachment system 102 and the
crane 200 being installed on the tractor frame 112 provide an
integrated implement installation/removal system, which allows for
simple and quick change-out of an implement, such as the implement
134, from the tractor 100. With reference to FIG. 4, during the
removal step of a change-out operation of implement 134 from under
tractor 100, crane implement attachment clip 220 is attached to
eyehook 162 of lift bar 160. Winch 216 is operated to transfer the
weight load of implement 134 from the implement lift arms 138 to
the crane 200. Once the weight of implement 134 is transferred to
the crane 200, top link 152 is detached from the outboard surface
of front frame section 119 of frame 112 by removing spring-loaded
lock pin 154 from the front frame section. While the top link 152
is shown in FIG. 4 as remaining with the front frame section 119,
it is preferred that the top link remain attached to the structural
member 148 because the top link typically is length adjustable for
a specific implement 134. Once top link 152 is detached from the
front frame section 119 of the frame 112, the crane 200 is utilized
to lift or raise implement 134 to a sufficient height so that the
hitch pins 140 are clear of both upward facing hitch receiving
points 139 of the implement lift arms 138. The implement 134 is,
thus, free from the implement lift arms 138. The crane arm 214 is
then rotated to a position so the implement 134 is no longer under
the tractor 100.
[0052] The modified three-point hitch attachment system 102 enables
unencumbered removal of implement 134 in a single attachment and
lift step from under tractor 100 frame 112 because the structural
member 148 on the implement 134 is located outward of implement
accommodating middle frame section 121. The lift bar 160 extends
from the structural member 148 over the implement 134 in a
direction towards a vertical plane containing the longitudinal
centerline of the tractor 100 or midpoint M of the implement. Once
the implement 134 is lifted to sufficiently clear hitch receiving
points 139 of the implement lift arms 138, the implement can be
removed from under tractor 100 frame 112 without interference by
frame components and frame rails 113, as illustrated in FIG. 4.
This is done simply by rotating the crane arm 214 about the axis of
the vertical support beam 212. Thus, the removal of the implement
134 can be accomplished simply, quickly and by one person.
[0053] The crane 200 is integrated into the frame 112 of the
tractor 100 and the vertical support beam 212 is located in
vertical crane port 210 and freely rotates with the crane port. The
crane arm 214 can rotate to enable the attached implement 134 to be
moved in an arcuate path to a location away from the tractor 100.
In this manner, when crane arm 214 is rotated outwardly from
tractor frame 112 to a point about ninety degrees from the frame,
the implement 134 is moved from under tractor frame 112 to a
position where the implement is clear from the tractor 100, as is
shown in FIG. 4, and can rest on an appropriate support surface or
structure. The implement attachment clip 220 is then uncoupled from
the eyehook 162 of the lift bar 160.
[0054] To install a selected implement 134, the removal steps
described above are reversed. In this manner, tractor 100 provides
a system for easy and convenient installation of an implement 134.
Specifically, as illustrated in FIG. 4, the tractor 100 and
selected implement 134 to be installed are moved into relatively
close proximity. The longitudinal extent or length L of the
implement 134 preferably is aligned in about the same direction as
the longitudinal centerline of the tractor 100. The structural
member 148 on the implement 134 is located about even with the
front tire 118. The lift bar 160 that is attached to the structural
member 148 preferably extends in a direction generally parallel to
the extent or length L of the implement 134.
[0055] The crane arm 214 is rotated to a position located outwardly
from the tractor frame 112 so the pulley 222 of the crane 200 is
situated somewhere above the eyehook 162 of the lift bar 160. The
attachment clip 220 of the crane 200 is attached to the eyehook 162
of the lift bar 160. The winch 216 is operated to transfer the
weight load of implement 134 to the crane 200. The crane arm 214 is
then rotated so the crane 200 can move the attached implement 134
in an arcuate path to a location under the tractor 100, from the
position illustrated in FIG. 4 to near the position illustrated in
FIG. 2. The implement 134 is moved to a location under tractor
frame 112 where the implement installation may be completed.
[0056] The crane 200 lifts or raises the implement 134 to a
sufficient clearance height so the hitch pins 140 are above both
upward facing hitch receiving points 139 of implement lift arms
138. The hitch pins 140 of the implement 134 may then be lowered
onto respective hitch receiving points 139 of implement lift arms
138. The top link 152 is then attached between the implement 134
and the front frame section 119. The lift bar 160 may then be
detached from the attachment clip 220 and the crane 200 removed
from the frame 112 or placed in a stowed position so it will not
interfere with operation of the tractor 100. Thus, the installation
of the implement 134 can be accomplished simply, quickly and by one
person. While the structural member 148 is illustrated in FIGS. 2-4
as being located on the left side of the tractor 100 it will be
appreciated that the structural member may be located on the right
side of the tractor, and in some instances may be preferable.
[0057] With reference to FIG. 5, a modified three-point hitch
attachment system for securing a rear implement 424 to the back end
of tractor 100 according to another aspect is indicated generally
at 400. The modified rear three-point hitch attachment system 400
features two implement hitch arms 430. Each implement hitch arm 430
is welded or otherwise rigidly attached to a shaft or tube that is
pivotally mounted to the rear frame sections 117 and extends
rearward from the back of the frame 112. Each implement hitch arm
430 features an upward facing hitch pin 439 used for attachment of
the rear implement 424. It should be apparent that while the rear
implement 424 is illustrated as a simple support frame or
attachment bar, the illustrated rear implement represents any
suitable implement or serve as a device to mount other implements
that an operator may have and connect to the attachment bar.
[0058] A top link attachment structural member 432 is welded or
otherwise rigidly attached to rear implement 424. Top link
attachment structural member 432 is positioned offset from the
midpoint P of the rear implement 424 and extends upwardly relative
to the hitch pins 439. Top link attachment structural member 432
has a plurality of openings 434, which are vertically aligned.
Openings 434 provide a means for attaching rear implement 424 to
control pitch with respect to the tractor 100.
[0059] The modified rear three-point hitch attachment system 400
features a top link 454 with a pin and link construction which is
mechanically attached to a selected one of openings 434 by a bolt
455 and a nut 456 for pivotal movement. Top link 343 is further
pivotally and removably attached via a linkage to a mechanical
lever, which enables control pitch of the rear implement 424.
Hydraulic assist may be used by the operator during operation of
the tractor to lift, lower and controlled depth of the rear
implement 424. Together, top link 454 and upward facing hitch pins
439 form rear three-point hitch system 400, which secures the rear
implement 424 to the rear of tractor 100. Optionally, a lever with
mechanical advantage may be employed in place of hydraulic or
electric assist to lift the rear implement 424.
[0060] Attachment of top link 454 to tractor 100 is offset from the
longitudinal centerline of frame 112 and enables engine 116 to be
positioned in an offset transverse alignment relative to the frame
longitudinal centerline. Positioned in this manner, an engine
output shaft 127 extends outwardly from engine 116 and is parallel
to rear drive axle 126. A pulley 129 is attached to engine output
shaft 127. A V-belt 130 connects pulley 129 to a pulley on a
transmission. The transmission in turn is mechanically coupled to
rear wheels 120 by another V-belt 131. Power transfer from engine
116 by way of V-belts 130, 131 simplifies serviceability of tractor
100, and also reduces the cost and complexity of the tractor when
compared to the prior art. This offset of the top link 454 does not
interfere with power and drive line components of the tractor
100.
[0061] A method for installing and/or removing an implement 134
from a tractor 100 according to yet another aspect is disclosed.
The method includes steps that are described above and illustrated
in FIGS. 2-4. Specifically, the method of attaching and removing an
implement 134 to a vehicle, such as a tractor 100, includes
providing the vehicle that has a vehicle frame 112 with a pair of
spaced apart frame portions 113. The spaced apart frame portions
113 extend in substantially the same direction. A pair of hitch
receiving points 139 connect with the vehicle frame 112. Each
receiving point 139 is connected with a respective one of lift arms
138.
[0062] An implement 134 is provided that includes support
structure, such as a metal bar, having a length L and a midpoint M.
A pair of hitch pins 140 are attached to the support structure of
the implement 134. The pitch pins 140 are spaced apart in a
direction along the length L of the support structure of the
implement 134 on opposite sides of the midpoint M. Each hitch pin
140 is mounted in a respective one of the hitch receiving points
139. A structural member 148 is connected to, and forms part of,
the support structure of the implement 134. The structural member
148 has at least a portion that is attached to structure outboard
of the frame portion 113. A lift mechanism, such as the crane 200,
is mounted on a frame portion of the vehicle frame 112. The crane
200 is used to install and remove the implement 134.
[0063] To remove the implement 134 from the tractor 100, the
attachment clip 220 of the crane 200 is connected to the eyehook
162 of the lift bar 160. The crane 200 is actuated to move the
hitch pins 140 of the implement 134 from resting on the hitch
receiving points 139 on the lift arms 138. The top link 152 is
disconnected from the front frame section 119. The implement 134
can then be swung out from under the tractor 100 without having to
lower the implement onto the ground, detach and then reattach a
lifting device since the frame 112 does not interfere with the
removal steps.
[0064] To mount a selected implement 134 onto the tractor 100, the
crane attachment clip 220 of the crane 200 is connected to the
eyehook 162 of the lift bar 160. The crane 200 is actuated to lift
the implement 134 from its storage location. The crane arm 214 is
rotated. The implement 134 can then be swung under the tractor 100
without having to lower the implement onto the ground, detach and
then reattach a lifting device to maneuver around the frame 112.
The hitch pins 140 are placed above the hitch receiving points 139.
The crane 200 then lowers the implement 134 until the hitch pins
140 are located in the hitch receiving points 139 on the lift arms
138. The top link 152 that is connected to the structural member
148 is then attached to the front frame section 119. The crane 200
is then disconnected from the implement 134. The crane 200 may be
removed from the tractor 100 and the lift bar 160 detached from the
structural member 148 so the crane and lift bar do not interfere
with operation of the tractor or vision of the operator.
[0065] The method includes attaching the structural member 148 to
the implement 134 at a location offset from the midpoint M of the
structural member. The method also includes locating the entire
structural member 148 outside of the vehicle frame 112. The method
includes providing a top link 152 that is removably attachable
between the structural member 148 and the vehicle frame 112. The
method further includes providing a lift bar 160 connectable with
the structural member 148 and has an end portion extendable in a
direction towards a plane extending normal to a midpoint M of the
implement 134. The lift bar 160 has an intermediate portion
extending between the structural member 148 and end portion. The
lift bar 160 is constructed and positioned, when attached to the
structural member 148, so the vehicle frame 112 does not impede
removal and installation of the implement 134.
[0066] The crane 200 and modified three-point hitch attachment
system 102 of the disclosed subject matter and method provide an
implement installation/removal system that enables simple and quick
change out of implements installed under the frame of a tractor,
thereby decreasing equipment downtime. Additionally, the modified
rear three-point hitch attachment system 400 of the disclosed
subject matter provides an implement attachment system for
implements 424 attached to the rear of a tractor that has an offset
attachment structural member 432 to free up space that can be
occupied by powertrain components.
[0067] It is to be understood that the structure, arrangement and
method of the abovedescribed implement installation/removal systems
for agricultural tractors of the disclosed aspect may be altered or
rearranged without affecting the overall concept or operation of
the disclosed subject matter. In addition, the implement
installation/removal systems for agricultural tractors of the
disclosed aspect may be employed with other types of tractors than
those shown and described above, without affecting the overall
concept or operation of the disclosed subject matter.
[0068] The disclosed subject matter has been described with
reference to a specific embodiment. It is to be understood that
this illustration is by way an example and not by way of
limitation. Potential modifications and alterations will occur to
others upon a reading and understanding of this disclosure, and it
is understood that the invention includes all such modifications,
alterations, and equivalents thereof. From the above description of
at least one aspect, those skilled in the art will perceive
improvements, changes and modifications. Such improvements, changes
and modifications within the skill of the art are intended to be
covered by the appended claims.
* * * * *