U.S. patent number 3,815,764 [Application Number 05/264,829] was granted by the patent office on 1974-06-11 for load body with load compacting and ejecting blade.
This patent grant is currently assigned to East Coast Equipment Corp.. Invention is credited to William C. Gilfillan, Saul R. Spector.
United States Patent |
3,815,764 |
Gilfillan , et al. |
June 11, 1974 |
LOAD BODY WITH LOAD COMPACTING AND EJECTING BLADE
Abstract
An upwardly opening load body including first and second ends
and having an openable end gate at its first end and a load
ejecting blade positioned within its second end for movement toward
and away from the first end of the load bed. The blade may be
utilized to eject a load from the load body or bed when the end
gate is open and may also be utilized to compact a load within the
body against the end gate when the latter is closed. The body
includes upstanding side walls between which the ejecting and
compacting blade is received and the side walls define
corresponding longitudinal guideways in which followers carried by
the corresponding sides of the ejector blade are guidingly
received, the engagement of the blade supported followers in the
side wall guideways insuring proper centering of the blade between
the side walls and resisting spreading of the side walls due to
compaction of a load therebetween.
Inventors: |
Gilfillan; William C.
(Nesquehoning, PA), Spector; Saul R. (Pottsville, PA) |
Assignee: |
East Coast Equipment Corp. (St.
Clair, PA)
|
Family
ID: |
23007785 |
Appl.
No.: |
05/264,829 |
Filed: |
June 21, 1972 |
Current U.S.
Class: |
414/513;
414/517 |
Current CPC
Class: |
B60P
1/006 (20130101); B65F 3/28 (20130101) |
Current International
Class: |
B60P
1/00 (20060101); B65F 3/28 (20060101); B65F
3/00 (20060101); B60p 001/00 () |
Field of
Search: |
;214/82,83.3 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Spar; Robert J.
Attorney, Agent or Firm: O'Brien; Clarence A. Jacobson;
Harvey B.
Claims
What is claimed as new is as follows:
1. A load body defining an upwardly opening elongated receptacle
having first and second ends and consisting of an elongated
flooring assembly and a pair of opposite side upstanding side walls
extending along and projecting upwardly from opposite side marginal
edge portions of said flooring assembly, one end of said body
including an openable end gate and the opposite end portion of said
body having an upstanding transverse partition disposed therein
between said side walls and guidingly engaged with the body for
movement toward and away from said one end thereof, said body
including motor means drivingly connected to said partition for
selectively shifting the latter longitudinally of said body, said
side walls including longitudinally extending guideway defining
means spaced appreciably above said flooring assembly, said
partition including followers guidingly engaged in said guideway
defining means for movement therealong and against lateral inward
movement relative to said guideway defining means, said followers
being supported from said partition for limited movement
horizontally along the partition transversely of said body, and
force means operatively connected between said partition and said
followers yieldingly biasing said followers inwardly toward each
other.
2. The combination of claim 1 wherein said side walls include
longitudinally spaced upstanding hollow reinforcing posts with
internal stiffeners projecting downwardly below the corresponding
side marginal portions of said flooring assembly, the lower end
portions of said stiffeners projecting below said flooring assembly
being braced relative to the adjacent underside portions of the
corresponding side marginal portions of said flooring assembly.
3. The combination of claim 2 wherein the bracing between the lower
end portions of said stiffeners and said flooring assembly side
marginal portions includes transverse upstanding gusset plates
secured to the underside surface portions of said flooring assembly
and the inner side portions of the lower ends of said stiffeners
projecting below said flooring assembly.
4. The combination of claim 3 wherein said stiffeners comprise
I-beam members.
5. The combination of claim 1 wherein said flooring assembly
includes a flooring plate assembly secured over a plurality of
longitudinally spaced transverse beams, said side walls including
longitudinally spaced upstanding hollow reinforcing posts with
internal stiffeners projecting downwardly below the corresponding
side marginal portions of said flooring plate assembly and the
adjacent ends of at least some of said transverse beams, and brace
means secured between the lower end portions of said stiffeners and
the underside portions of said some transverse beams of said
flooring assembly, said brace means including transverse upstanding
gusset plates secured to the underside surface portions of said
transverse beams and the inner side portions of the lower ends of
said stiffeners projecting below said transverse beams.
6. The combination of claim 1 wherein said motor means comprises a
multi-stage hydraulic cylinder including a base end section secured
longitudinally through and to a lower transverse center portion of
said partition, a transverse horizontal anchor assembly supported
in the other end of said body above said flooring assembly, the
free extendable end of said cylinder being secured to said
transverse horizontal anchor assembly, said multi-stage hydraulic
cylinder including at least three relatively telescoped extendable
sections, a guide carriage disposed between said partition and said
anchor assembly, said guide carriage also including followers
guidingly engaged in said guideway defining means, an intermediate
section of said relatively telescoped extendable hydraulic cylinder
sections being supported from said guide carriage against lateral
deflection in all directions perpendicular to the centerline of
said hydraulic cylinder.
7. A load body defining an upwardly opening elongated receptacle
having first and second ends and consisting of an elongated
flooring assembly and a pair of opposite side upstanding side walls
extending along and projecting upwardly from opposite side marginal
edge portions of said flooring assembly, one end of said body
including an openable end gate and the opposite end portion of said
body having an upstanding transverse partition disposed therein
between said side walls and guidingly engaged with the body for
movement toward and away from said one end thereof, said body
including motor means drivingly connected to said partition for
selectively shifting the latter longitudinally of said body, said
flooring assembly including a flooring plate assembly secured over
a plurality of longitudinally spaced transverse beams, said
receptacle including a pair of transversely spaced longitudinal
frame beams over which said transverse beams extend and to which
the latter are secured, said motor means comprising a multi-stage
hydraulic cylinder including a base section secured longitudinally
through and to a lower transverse center portion of said partition,
and a transverse horizontal anchor assembly supported in the other
end of said body above the flooring assembly, and longitudinally
spaced pairs of opposite side upstanding anchor members having
their lower ends rigidly anchored to the opposite sides of each of
said longitudinal frame beams below said flooring assembly, the
upper ends of said anchor members projecting upwardly through said
flooring assembly and rigidly anchored to said transverse
horizontal anchor assembly, the free extendable end of said
hydraulic cylinder being secured to said anchor assembly.
8. A load body defining an upwardly opening elongated receptacle
having first and second ends and consisting of an elongated
flooring assembly and a pair of opposite side upstanding side walls
extending along and projecting upwardly from opposite side marginal
edge portions of said flooring assembly, one end of said body
including an openable end gate and the opposite end portion of said
body having an upstanding transverse partition disposed therein
between said side walls and guidingly engaged with the body for
movement toward and away from said one end thereof, said body
including motor means drivingly connected to said partition for
selectively shifting the latter longitudinally of said body, said
motor means comprising a multi-stage hydraulic cylinder including a
base section secured longitudinally through and to a lower
transverse center portion of said partition, and an anchor assembly
supported from the other end of said body and to which the free
extendable end of said hydraulic cylinder is secured, said side
walls including longitudinally extending guideway defining means
spaced appreciably above said flooring assembly, said partition
including followers guidingly engaged in said guideway defining
means for movement therealong and against lateral inward movement
relative to said guideway defining means, said guideway defining
means also including lower opposite side tracks carried by said
side walls, said partition including a supporting carriage
including front and rear pairs of opposite side rollers rollingly
engaged in said tracks, one pair of said front and rear pairs of
opposite side rollers being supported from said support carriage
for adjustable vertical shifting relative thereto.
9. A load body defining an upwardly opening elongated receptacle
having first and second ends and consisting of an elongated
flooring assembly and a pair of opposite side upstanding side walls
extending along and projecting upwardly from opposite side marginal
edge portions of said flooring assembly, one end of said body
including an openable end gate and the opposite end portion of said
body having an upstanding transverse partition disposed therein
between said side walls and guidingly engaged with the body for
movement toward and away from said one end thereof, said body
including motor means drivingly connected to said partition for
selectively shifting the latter longitudinally of said body, said
side walls including longitudinally extending guideway defining
means spaced appreciably above said flooring assembly, said
partition including followers guidingly engaged in said guideway
defining means for movement therealong and against lateral inward
movement relative to said guideway defining means, said guideway
defining means also including lower opposite side tracks carried by
said side walls, said partition including a supporting carriage
having front and rear pairs of opposite side rollers rollingly
engaged in said tracks, one pair of said front and rear pairs of
opposite side rollers being supported from said support carriage
for adjustable vertical shifting relative thereto.
Description
The load compacting and ejecting body construction of the instant
invention has been designed to provide an open top hauling body
equipped with an internal front mounted blade connected directly to
a double acting telescopic cylinder and guided from the side walls
of the body for compacting a load against the end gate of the body
when the end gate is closed and ejecting a load from the body when
the end gate is open.
The various types of conventional load carrying vehicle bodies
include dump bodies, such as are mounted on truck or trailer
chassis and utilize hydraulic cylinders to raise the front of the
dump body so that the load within the body may be dumped therefrom
by gravity from the open rear of the body. This conventional type
of load body cannot function to compact a load therein, requires
considerable height to complete the dumping operation, is difficult
to control the rate of dumping and creates an unstable condition
when the body is long and/or the load is not uniform and/or when
the grade on which the unit is supported is inclined.
Another type of load body presently in use if that which is
referred to as an "Ejecto" body. This type of body is open at its
top with a front mounted blade. The blade is powered by a cable
which is in turn powered by means of sheaves, the center distance
of which are lengthened and shortened by a double acting hydraulic
cylinder. This type of load ejecting body has disadvantages
including a system which is complicated and more difficult to
maintain, the blade is supported on the outside of the body and the
inside width and, therefore, the volume of the body is reduced in
order to maintain the body within the maxim 96 inch width required,
body size is limited becuase of limitations imposed by inherent
physical characteristics of the cable actuated "Ejecto" body, and
compaction forces of great magnitude cannot be developed.
A third type of conventional load body presently in use is that
type including a closed top with a top opening for loading. This
type of unit is provided with a front mounted blade which is
directly coupled to a double acting hydraulic cylinder which may
compact against the end gate when the end gate is closed and eject
the load when the end is open. However, this type of unit includes
disadvantages in that it must be loaded through the top opening,
usually by means of a hopper, or through the rear end gate by means
of a compactor blade. Also, this type of load body requires the
utilization of the top in order to keep the side walls from
spreading during the compacting operation and in this type of unit
the blade is either supported by side rails on the floor of the
load bed and/or sides or by a rail and rollers in the center of the
body. In either instance, if the sides were stiffened and the roof
removed, direct dumping by conventional means, such as loaders or
cranes, would damage the blade supports.
The load body of the instant invention includes an open top and
openable end gate as well as a hydraulic cylinder actuated
compacting and ejecting blade disposed within the body. However,
the sides of the body are stiffened to resist spreading and the
ejecting and compacting blade is supported from the body in a
manner requiring very little internal volume of the body and in a
manner whereby the compacting and ejecting blade is connected to
the side walls of the body by means of a movable connection so as
to insure proper centering of the blade between the side walls and
to also further resist spreading of the side walls.
The main object of this invention is to provide a load body with a
load compacting and ejecting blade and constructed in a manner
whereby maximum internal volume and ease in compacting and ejecting
of the load within the body may be realized.
Another object of this invention is to provide a load body in
accordance with the immediately preceding object which will enable
direct dumping by conventional means, such as loaders and/or
cranes, without damaging the structure by which the ejector blade
is supported within the load body.
Still another object of this invention is to provide an ejector
blade type of load body constructed in a manner whereby the
clearance between the lower marginal edge portion of the ejector
blade and the associated floor of the body may be adjusted.
Another object of this invention is to provide an ejector blade
type of body powered by means of a multi-stage hydraulic cylinder
and with the hydraulic cylinder having an intermediate portion
thereof guidingly supported for movement longitudinally of the load
body so as to prevent lateral deflection of the intermediate
sections of the multi-stage cylinder when it is substantially fully
extended.
Another important object of this invention is to provide a
hydraulic cylinder powered ejector blade assembly constructed in a
manner wherein a major portion of the length of the base section of
the hydraulic cylinder is disposed forward of the load engaging
face of the blade so that the blade may be moved to a position
closely adjacent the forward end of the load bed.
A further object of this invention is to provide a movable
connection between the ejector blade and the side walls of the
associated load bed whereby the blade may be maintained centered
between the side walls and spreading of the side walls may be
resisted.
A final object of this invention to be specifically enumerated
herein is to provide a load body with a load compacting and
ejecting blade in accordance with the preceding objects which will
conform to conventional forms of manufacture, be of simple
construction and dependable in operation so as to provide a device
that will be economically feasible, long lasting and relatively
trouble free.
These together with other objects and advantages which will become
subsequently apparent reside in the details of construction and
operation as more fully hereinafter described and claimed,
reference being had to the accompanying drawings forming a part
hereof, wherein like numerals refer to like parts throughout, and
in which:
FIG. 1 is a top plan view of the load bed body of the instant
invention with a load ejecting position of the ejector blade and an
open position of the end gate being illustrated in phantom
lines;
FIG. 2 is a longitudinal, vertical, sectional view taken
substantially upon the plane indicated by the section line 2--2 of
FIG. 1;
FIG. 3 is an enlarged transverse, vertical, sectional view taken
substantially upon the plane indicated by the section line 3--3 of
FIG. 2;
FIG. 4 is an end elevational view of the load bed as seen from the
front end thereof, with the front wall of the load body
removed;
FIG. 5 is a fragmentary, longitudinal, vertical, sectional view
taken substantially upon the plane indicated by the section line
5--5 of FIG. 4;
FIG. 6 is an enlarged fragmentary, horizontal, sectional view taken
substantially upon the plane indicated by the section line 6--6 of
FIG. 5;
FIG. 7 is a fragmentary vertical, sectional view taken
substantially upon the plane indicated by the section line 7--7 of
FIG. 6;
FIG. 8 is an enlarged fragmentary transverse, vertical, sectional
view taken substantially upon the plane indicated by the section
line 8--8 of FIG. 5; and
FIG. 9 is a fragmentary longitudinal, vertical, sectional view
taken substantially upon the plane indicated by the section line
9--9 of FIG. 8.
Referring now more specifically to the drawings, the numeral 10
generally designates the load body of the instant invention. The
body 10 includes a floor assembly referred to in general by the
reference number 12 supported on a pair of right and left hand
upstanding side wall assemblies referred to in general by the
reference numeral 16. The rear end of the body 10 includes an end
gate 18 which is swingable between the closed solid line positions
illustrated in FIGS. 1 and 2 of the drawings and the phantom line
open position illustrated in FIGS. 1 and 2 of the drawings. In
addition, the load body 10 includes an ejector blade assembly
referred to in general by the reference numeral 20, a hydraulic
cylinder assembly 22 for shifting the ejector blade assembly 20, an
anchor assembly 24 for the hydraulic cylinders 22 and a support and
guide carriage assembly 26 for an intermediate portion of the
hydraulic cylinder assembly 22.
The floor assembly 12 includes a plurality of longitudinally spaced
transversely extending I-beams 28 secured across the boxed I-beams
14 and a flooring plate assembly 30 secured across the I-beams 28.
The side walls 16 each include an inner side wall plate assembly 32
and longitudinally spaced upstanding side wall posts 34 are secured
to the outer surfaces of the side wall plate assemblies 32 on 2
foot centers and terminate downwardly at and are secured to the
flooring plate assembly 30. Under every third side wall post 34 is
a 3 inch I-beam stiffener 36 welded to the side wall plate assembly
32 on 6 foot centers. The stiffeners 36 project through and below
the flooring assembly 12 and are braced relative to the I-beams 28
by means of gusset plates 38. The upper marginal edge portion of
each side wall plate assembly 32 includes an outer tubular
stiffener 40 extending longitudinally therealong and each stiffener
40 has an inverted V-shaped protector angle 42 secured to its upper
surface.
The ejector blade assembly 20 includes a rearwardly and downwardly
inclined lower body plate portion 44, a substantially vertical
intermediate body plate portion 46 and a rearwardly and upwardly
inclined upper body plate portion 48. The body plate portions are
integral and the upstanding side marginal edge portions thereof
include rearwardly angled marginal portions 44', 46' and 48'. The
central portion of the lower plate portion 44 has a rectangular
opening formed therethrough through which a rectangular sleeve 50
is secured. A longer protective pipe 52 extends through and is
secured in the sleeve 50 and the rear end portions of the sleeve 50
and the pipe 52 are braced relative to the plate portion 44 by
means of gusset plates 54 and 56. As may be seen from a comparison
of FIGS. 4 and 5 of the drawings, the plate portions 44, 46 and 48
include vertical bracing members 58 as well as horizontal bracing
members 60 secured to their forward surfaces. The lower marginal
edge portion of the plate portion 44 includes a scraper blade
portion 62 which closely overlies the flooring panel assembly 30
and the entire ejection blade assembly 20 is carried by a carriage
assembly referred to in general by the reference numeral 64.
The carriage assembly 64 includes lower opposite side longitudinal
members 66 from which front and rear tapered rollers 68 and 70 are
journaled. The rollers 70 are fixed in position relative to the
member 66. However, the rollers 68 are mounted from eccentric
supports 72 whereby the vertical positioning of the rollers 68 may
be adjusted relative to the longitudinal members 66. Thus, the
scraper blade portion 62 may be adjusted in position relative to
the flooring plate assembly 30 by raising and lowering the front
rollers 68, as desired.
The lower marginal portions of the side walls 16 include inwardly
opening longitudinally extending channels 74 in which the rollers
68 and 70 are rollingly received and the channels 74 are spaced
slightly above the flooring panel assembly 30 and supported from
the latter by means of short longitudinally spaced transversely
extending I-beams 76, there being provided closure plates 78
secured across each set of inner ends of the I-beams 76. Also, a
pair of upwardly and outwardly inclined plates 80 are secured
between the upper inner marginal edge portions of the channels 74
and the inner surfaces of the side wall plate assemblies 32 are
disposed thereabove.
A heavy duty Z angle plate 82 is secured longitudinally along the
inner surface of each side wall plate assembly 32 and each plate 80
defines a downwardly opening channel 84. A pair of plates 85
corresponding to the plates 80 are secured between the upper
innermost marginal portions of the angle plates 82 and portions of
the side wall plate assemblies 32 disposed thereabove.
The ejector blade assembly 20 includes a pair of opposite side
tubular mounts 86 in which a pair of tension arms 88 are slidingly
telescoped. The arms 88 extend transversely of the load bed 10 and
carry vertically adjustable upstanding rollers 90 on their outer
ends disposed in the channels 84 and rollingly engaged with the
angle plate 82. The inner ends of the arms 88 are acted upon by
heavy duty coil springs 92, see FIG. 8, and in this manner the
ejector blade assembly 20 is maintained centered between the side
walls 16. Also, the spring urged arms 88 and the rollers 90 tend to
prevent the side walls 16 from spreading.
The anchor assembly 24 comprises a pair of boxed I-beams 94
anchored in position on the floor assembly 12 by means of
vertically extending opposite side anchor straps 96 secured to the
boxed I-beams 94, passing downwardly through the floor assembly 12
and secured to the boxed I-beams 14. A cylindrical cross member 98
is secured and extends between the boxed I-beams 94 and it carries
a center upstanding structure 100 between whose opposite side
plates 102 the free end of the fifth extendable section 104 of the
hydraulic cylinder assembly 22 is secured as at 106. The hydraulic
cylinder assembly also includes fourth, third, second and first
extendable sections 108, 110, 112 and 114 as well as a main
cylinder portion 116. The main cylinder portion 116 is secured to
the carriage assembly 64 by means of a trunnion mount 118 secured
to the framing carried by the front face of the ejector blade
assembly 20. The trunnion mount 118 includes a collar 120 carried
by the cylinder 116 and including diametrically opposite trunnion
pins 122 received through trunnion blocks 124 secured to the
framework of the ejector blade assembly 20, see FIGS. 4 and 5.
The outer end of the third section 110 of the cylinder assembly 22
is supported from the support and guide carriage assembly 26. The
assembly 26 includes a horizontal transverse member 130 including
opposite side depending legs 132 from the lower ends of which a
pair of rollers 134 are journaled, the rollers 134 being also
rollingly received within the channels 74. Accordingly, when the
hydraulic cylinder assembly 22 is in an extended position such as
that illustrated in phantom lines in FIGS. 1 and 2 of the drawings,
the outer end of the third extendable section 110 is supported
against lateral deflection in any direction perpendicular to the
center line of the hydraulic cylinder assembly 22.
From FIG. 3 of the drawings it may be seen that the lower opposite
side marginal portions of the plate portion 44 include tongues 138
which ride in the channel members 74 in advance of the rollers 70,
68 and 134 in order to maintain the channel members 74 clean as the
ejector blade assembly 20 moves toward the rear of the load bed 10.
In addition, the upper opposite side marginal portions of the plate
portion include additional tongues 140 which ride in the channels
84 in advance of the rollers 90 when the ejector blade assembly 20
is moving toward the rear of the load bed 10.
In operation, the load bed 10 may be loaded through its open top
with the end gate 18 secured in its closed position in any
convenient manner (not shown). After a portion of a load has been
placed in the load bed 10, the load may be compacted by actuation
of the hydraulic cylinder assembly 22 to force the ejector blade
assembly 20 toward the end gate 18 and thereby compacting the load
within the load body 10 against the closed end gate 18. Then, the
ejector blade assembly 20 may again be retracted to the front end
of the load bed 10 after which additional loads may be placed
within the load bed or body 10. After repeated compacting of the
load within the load body 10, the latter may be transported to a
point of discharge and the end gate 18 may be opened. Thereafter,
the hydraulic cylinder assembly 22 may again be actuated to eject
the load from the load body 10 in a controlled manner.
During the load compacting process, there is a tendency for the
sides or side walls 16 to spread apart. However, this tendency is
resisted by the I-beam stiffeners 36 and side wall posts 34 and the
manner in which the posts and I-beam stiffeners are raised relative
to the underside of the flooring assembly 12 by means of the
bracing plates 38. In addition, the coil springs 92 exert
approximately a 1,000 pound thrust on each of the arms 88. In this
manner, the blade assembly 20 is maintained centered between the
side walls 16 and each side wall 16 has a force of at least 1,000
pounds acting thereon adjacent the blade assembly 20 in opposition
to spreading of the side walls 16.
Although there has been no control assembly illustrated for
controlling the operation of the hydraulic cylinder assembly 22, it
is to be noted that it is proposed that such a control system will
include a pressure sensing reversing control whereby movement of
the blade assembly 20 to its full limit stop position adjacent the
end gate 18 will increase the actuating pressure for the cylinder
assembly 22 and automatically reverse operation of the cylinder
assembly 22 so as to contract the latter and return the blade
assembly 20 to the front end of the load body 10. In addition, this
same pressure sensing control will automatically reverse the blade
assembly 20 when a partial load is being compacted against the end
gate 18 as the same maximum pressure is reached.
The foregoing is considered as illustrative only of the principles
of the invention. Further, since numerous modifications and changes
will readily occur to those skilled in the art, it is not desired
to limit the invention to the exact construction and operation
shown and described, and accordingly all suitable modifications and
equivalents may be resorted to, falling within the scope of the
invention.
* * * * *