U.S. patent application number 11/232651 was filed with the patent office on 2006-01-19 for head for excavator mounted to power shovel.
This patent application is currently assigned to Dae Suk Engineering Co., Ltd.. Invention is credited to Chan Suk Ko.
Application Number | 20060012239 11/232651 |
Document ID | / |
Family ID | 33028780 |
Filed Date | 2006-01-19 |
United States Patent
Application |
20060012239 |
Kind Code |
A1 |
Ko; Chan Suk |
January 19, 2006 |
Head for excavator mounted to power shovel
Abstract
Disclosed is a breaking head mounted to an excavator for
removing rocks on or in the ground at construction work. The
breaking head includes lateral plates positioned between an upper
plate and a lower plate, and a rotary plate connected to a rotary
shaft installed to an upper end of the upper plate. The rotary
plate has brackets to be engaged to a link and an arm of the
excavator. The breaking head further includes a plurality of pivot
cylinders at a rear portion of the breaking head for pivoting the
breaking head left and right around the rotary shaft and inclined
bearing members attached between a plurality of bearing members
installed along four corners of the lower plate.
Inventors: |
Ko; Chan Suk; (Jeju-Si,
KR) |
Correspondence
Address: |
ST. ONGE STEWARD JOHNSTON & REENS, LLC
986 BEDFORD STREET
STAMFORD
CT
06905-5619
US
|
Assignee: |
Dae Suk Engineering Co.,
Ltd.
|
Family ID: |
33028780 |
Appl. No.: |
11/232651 |
Filed: |
September 22, 2005 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
|
|
PCT/KR03/00560 |
Mar 22, 2003 |
|
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11232651 |
Sep 22, 2005 |
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Current U.S.
Class: |
299/70 |
Current CPC
Class: |
E02F 5/305 20130101;
E02F 3/966 20130101 |
Class at
Publication: |
299/070 |
International
Class: |
E21B 1/12 20060101
E21B001/12 |
Claims
1. A breaking head for an excavator including lateral plates
positioned between an upper plate and a lower plate, and a rotary
plate connected to a rotary shaft installed to an upper end of the
upper plate, the rotary plate having brackets to be engaged to a
link and an arm of the excavator; the breaking head comprising: a
plurality of pivot cylinders at a rear portion of the breaking head
for pivoting the breaking head left and right around the rotary
shaft; and inclined bearing members attached between a plurality of
bearing members installed along four corners of the lower
plate.
2. The breaking head as claimed in claim 1, wherein fixing pieces
are secured to both lower ends of the rotary plate, and a bracket
coupled to a rod of the pivot cylinder is hinged to the fixing
piece by a hinge.
3. The breaking head as claimed in claim 1, wherein a protrusion is
formed at a rear portion of the bracket.
4. The breaking head as claimed in claim 3, wherein a reinforcing
pipe is provided between the protrusions.
5. The breaking head as claimed in claim 1, wherein a footboard is
attached to a lower end of the lateral plate.
6. The breaking head as claimed in claim 5, wherein a knob is
attached to an upper end of the lateral plate.
Description
[0001] This application is a continuation of pending International
Patent Application No. PCT/KR2003/000560 filed on Mar. 22, 2003
which designates the United States.
FIELD OF THE INVENTION
[0002] The present invention relates to an excavator, and more
particularly, to a breaking head mounted to an excavator for
removing rocks on or in the ground at construction work.
BACKGROUND OF THE INVENTION
[0003] Generally, rocks positioned on or in the ground should be
removed at the initial stage of foundation for the construction
work. The rock removing process is implemented by one method of
breaking the rock using a vibrator or another method of drilling a
hole in the rock using a rotary cutter. The method using the
vibrator causes serious vibration and noise to happen, thereby
incurring the enmity of the people. Accordingly, the latter method
using the rotary cutter having a little vibration and noise has the
preference.
[0004] According to the method using the rotary cutter, a breaking
head has a drilling means and a vertical moving means, and is
mounted to an arm of the excavator to form a hole in the rock and
remove the rock.
[0005] The construction of the breaking head carrying out the above
function is disclosed in Korean Utility Model Publication No.
0260604 entitled "Excavator Head for Mounted to Power Shovel" and
issued to the applicant. are attached to both sides of the rotary
plate. The respective brackets are connected to a link and arm of
the excavator. The rotary plate is provided with an auxiliary
cylinder coupled to the frame. Two cylinders are mounted in
parallel to a rear portion of a rotary pipe and are moved along a
guide rod in the frame to continuously carry the rotary pipe.
[0006] Specifically, the breaking head constructed as described
above will obtain the following effects. First, the rotary pipe is
vertically moved by the cylinder operated vertically to implement
the excavation work. In addition, the breaking head according to
the present invention is rotated back and forth by the link
operation of the excavator, thereby easily working an inclined
surface such as a protruded region. Furthermore, since the
auxiliary cylinders (rotary cylinder) are mounted to one side of
the rotary plate, the breaking head may be rotated from side to
side, if necessary, thereby easily working a side of the
ground.
[0007] The conventional breaking head constructed and having the
working effects as described above has following problems.
[0008] In the case of rotating the breaking head from side to side
using the rotary cylinder to work the side of the ground, since
only one rotary cylinder is attached to one side of the rotary
plate, overload is applied to the rotary cylinder itself when it
operates, thereby not smoothly rotating the breaking head.
[0009] In addition, when excavating the inclined surface such as
the protruded region of the ground, after the breaking head is
rotated at a desired angle back and forth by the link operation of
the excavator, the breaking head implements the excavation for the
inclined surface, while bearing members installed to a bearing
plate (lower plate) of the breaking head are fixed to the ground.
At that time, the bearing members are not fixed to the inclined
surface of the ground and thus are released from the ground.
Therefore, the breaking head is not fixed, and an operator is
suffered from the working delay.
[0010] Also, the breaking head is generally laid on the ground when
keeping it. At that time, various operating levers and components
mounted to the breaking head may be damaged due to collision
against recesses of the ground.
DISCLOSURE OF THE INVENTION
[0011] Therefore, an object of the present invention is to solve
the problems involved in the prior art, and to provide a breaking
head for an excavator, in which a plurality of pivot cylinders for
pivoting the breaking head from side to side are installed to rear
portions of the breaking head, thereby more smoothly working a side
of the ground.
[0012] Another object of the present invention is to provide a
breaking head for an excavator, in which, inclined bearing members
having a desired slant angle are attached between bearing members
provided along four lower corners of a lower plate, thereby easily
securing the breaking head to the ground when excavating an
inclined surface or curved surface of the ground.
[0013] Another object of the present invention is to provide a
breaking head for an excavator, in which a pipe is provided to a
rear portion of a stationary plate engaged to the pivot cylinder,
thereby preventing various components from being damaged.
[0014] Another object of the present invention is to provide a
breaking head for an excavator, in which footboards are provided to
a lateral plate of the breaking head, thereby conveniently and
safely manipulating various operating levers mounted to the lateral
plate.
[0015] In order to accomplish the above and other objects, there is
provided a breaking head for an excavator including lateral plates
positioned between an upper plate and a lower plate, and a rotary
plate connected to a rotary shaft installed to an upper end of the
upper plate, the rotary plate having brackets to be engaged to a
link and an arm of the excavator; the breaking head comprising: a
plurality of pivot cylinders at a rear portion of the breaking head
for pivoting the breaking head left and right around the rotary
shaft; and inclined bearing members attached between a plurality of
bearing members installed along four corners of the lower
plate.
BRIEF DESCRIPTION OF DRAWINGS
[0016] The above objects, other features and advantages of the
present invention will become more apparent by describing the
preferred embodiment thereof with reference to the accompanying
drawings, in which:
[0017] FIG. 1 is a perspective view illustrating a construction of
a breaking head for an excavator according to a preferred
embodiment of the present invention.
[0018] FIG. 2 is a front view of the breaking head shown in FIG.
1.
[0019] FIG. 3 is a cross-sectional view taken along a line A-A of
FIG. 2.
[0020] FIG. 4 is a bottom view of the breaking head according to
the present invention.
[0021] FIGS. 5a and 5b are left and right side views illustrating
an operating state of a breaking head according to the present
invention.
[0022] FIG. 6 is a side view illustrating one using state of a
breaking head according to the present invention.
[0023] FIG. 7 is a side view illustrating another using state of a
breaking head according to the present invention.
DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS
[0024] Reference will now be made in detail to preferred
embodiments of the present invention, examples of which are
illustrated in the accompanying drawings. In the embodiments, like
parts are shown by corresponding reference numerals throughout the
drawings, and additive explanation thereof will be omitted.
Components required for understanding operation of the present
invention will now be described herein.
[0025] FIGS. 1 to 4 are views depicting construction of a breaking
head mounted to an excavator according to the present
invention.
[0026] Referring to FIGS. 1 to 4, a breaking head 100 for an
excavator according to the present invention includes a lateral
plate 14 at each side of the head. An upper plate 10 and a lower
plate 12 are fixed to upper and lower end portions of the lateral
plates 14, respectively. The lateral plates 14 are provided therein
with a carrier 16 moved up and down along a guide rod 18 by first
and second lifting cylinders 17 and 19. A hydraulic motor 20 is
installed to an upper end of the carrier 16. A rotary pipe 22
rotated by the hydraulic motor 20 is installed to a lower end of
the carrier 16. A stationary plate 26 is fixed to an upper end of
the upper plate 10, and a rotary shaft 30 is inserted into a hole
of the stationary plate. A rotary plate 28 having brackets is
installed to an upper end of the rotary shaft. The brackets 32 are
coupled to a link 70 of the excavator (not shown) and an arm 72 of
the excavator, respectively, so that the breaking head 100 of the
present invention may be rotated forth and back to implement the
work. Specifically, the breaking head 100 constructed as described
above is mounted to the excavator, and excavates the ground by use
of the rotary pipe 22, when implementing the construction work.
Operation of this breaking head 100 for excavator is widely known
in the art, and the detailed description thereof is omitted
therein.
[0027] The breaking head 100 for excavator further includes a
plurality of pivot cylinders 38 at a rear portion of the breaking
head for pivoting the breaking head 100 left and right when working
a side of the ground. The assembled construction of the pivot
cylinder 38 and the breaking head 100 will now be described in
detail with reference to FIGS. 1 to 3.
[0028] A protruded piece 37 is welded to one end of the pivot
cylinder 38, and is hinged to the plate 36 attached to the rear
portion of the lateral plate 14 by a hinge 39. A bent bracket 42 is
welded to a rod 40 of the pivot cylinder 38. The bracket 42 is
hinged to a fixing piece 44 attached to a lower end of the rotary
plate 28 by means of a hinge 46. The head 100 is provided at a rear
portion thereof with a plurality of the pivot cylinders 38
assembled as described above, so that the head may be smoothly
pivoted from side to side.
[0029] Specifically, in the case of excavating the side of the
ground as shown in FIG. 5a, the rod 40 is drawn out by operating
the pivot cylinder 38 provided at a left side of the breaking head,
so that the plate 36 hinged to the protruded piece 37 of the pivot
cylinder 38 is pushed. The breaking head 100 is pivoted in a right
direction around the rotary shaft 30. At that time, the rod 40 is
retracted by the pivot cylinder 38 positioned at an opposed side of
the pivot cylinder 38, i.e., a right side of the breaking head, so
that the plate 36 is pulled to smoothly pivot the head 100. The
breaking head 100 is rotated in the left direction, by retracting
the rod 40 of the pivot cylinder 38 attached to the left side of
the head, as shown in FIG. 5b.
[0030] The lower plate 12 is provided at a lower end thereof with
conical bearing members 50 along four corners of the lower plate.
Inclined bearing members 52 having a desired slant angle are
attached between the bearing members 50, as shown in FIGS. 1 and 4.
The reason why the inclined bearing members 52 are attached to the
lower plate 12 is to easily secure the breaking head 100 to the
ground when excavating an inclined surface or a curved surface of
the ground. Specifically, the inclined bearing members 52 are
contacted with the inclined surface of the ground to support the
breaking head 100, thereby smoothly implementing the excavating
work.
[0031] The bracket 32 attached to the rotary plate 28 includes a
protrusion 33 formed at a rear portion of the bracket 32, as shown
in FIG. 1. A cylindrical pipe 34 is welded between the protrusions
33. Specifically, the pipe 34 is protruded from the end of the
rotary plate 28 by a desired length. The reason why the pipe is
protruded from the rotary plate 28 is to prevent various
manipulating levers or components attached to the head 100 from
being damaged when keeping the head. Specifically, in the case of
keeping the breaking head 100 to lay down on the ground, the
breaking head 100 is not contacted with the ground but is lifted
over the ground by the pipe 34, thereby preventing the components
from being damaged.
[0032] The lateral plate 14 includes footboards 54 attached to both
lower end of the lateral plate for supporting feet of an operator,
as shown in FIG. 1. The operator can safely manipulate various
operating levers (not shown), with the operator standing on the
footboards. Specifically, when excavating the ground having a
suddenly inclined surface or bent surface, the operator stands on
the footboards and safely manipulates the operating levers mounted
to the breaking head, thereby preventing the accident caused from
carelessness. Preferably, the footboard 54 is provided on its upper
portion with a rubber packing for preventing a slip.
[0033] The lateral plate further includes bent knobs 60 attached to
both upper ends of the plate. The operator can grip the knobs to
easily stand on the footboards 54.
[0034] While the present invention has been described and
illustrated herein with reference to the preferred embodiments
thereof, it will be apparent to those skilled in the art that
various modifications and variations can be made therein without
departing from the spirit and scope of the invention. Thus, it is
intended that the present invention covers the modifications and
variations of this invention that come within the scope of the
appended claims and their equivalents.
INDUSTRIAL APPLICABILITY
[0035] As apparent from the above description, the present
invention provides the following working effects.
[0036] First, a plurality of pivot cylinders for pivoting the
breaking head from side to side is installed to the rear portions
of the breaking head, thereby more smoothly working the side of the
ground.
[0037] Second, the inclined bearing members having a desired slant
angle are attached between the bearing members provided along four
lower corners of the lower plate, thereby easily securing the
breaking head to the ground when excavating the inclined surface or
curved surface of the ground.
[0038] Third, a pipe is provided to the rear portion of the
stationary plate engaged to the pivot cylinder, thereby preventing
various components from being damaged.
[0039] And, finally, the footboards are provided to the lateral
plate of the breaking head, thereby conveniently and safely
manipulating various operating levers mounted to the lateral
plate.
* * * * *