JPH09105236A - Attachment for fitting to shovel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the workability by fixing a base plate to a bracket, which is fixed to an arm, and fixing a shaking means to the base plate, and while fitting a concrete grain raising means or the like. SOLUTION: When a hydraulic motor of a shaking device 16 is driven, an eccentric wheel is rotated in the condition that it is deviated in the right and left direction so as to eccentrically rotate a base plate 15 in the right and left direction and the vertical direction through a housing 25. In response to the rotation of the eccentric wheel, when one of vibration-proof rubbers 17A, 17B is compressed, the other is stretched, and when one of vibration damping rubbers 17C, 17D is compressed, the other is stretched so as to reduce the vibration of the base plate 15 in the right and left direction and enlarge the vibration thereof in the vertical direction. Furthermore, when a grain raising bar 35, which is fitted to the tip of an arm 12 and an operating rod 13a, is pushed to a concrete wall surface, the grain raising bar 35 is vibrated in the vertical direction so as to cut into the concrete wall surface for the generation of damage.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an attachment removably attached to the tip of an arm of a hydraulic excavator, and more specifically, to a roughening tool for roughening the surface of concrete, a breaker for crushing concrete, a bucket for scooping crushed material, A construction work tool including a pile driving tool for driving a pile or the like is provided, and a vibration generating device driven by a hydraulic motor gives vibration to these work tools to perform a required operation.

[0002]

2. Description of the Related Art
When repainting concrete on the floor or wall surface of concrete, if the original concrete surface is a smooth surface, the newly painted concrete will not adhere easily,
Roughening the joints on the concrete surface and painting the roughened surface with concrete is practiced.

As the grain roughening machine for roughening the surface of the concrete, there is provided a roughening tool 1 having a large number of protruding rods 1b projecting from the surface of a metal substrate 1a as shown in FIG. It is configured to be connected to a drive device (not shown) for rotating and moving a support shaft 1c projecting from the base plate 1a of the breaking tool 1. When the concrete surface 2 is roughened in a wide range by the roughening tool 1, a shovel car is equipped with the roughening tool for use. In the roughening tool 1, the tip edge of the protruding rod 1b cuts into the concrete surface, and the substrate 1a itself rotates and moves,
The concrete surface is widely damaged.

However, since the concrete surface is hard, a force is required to make a cut in the concrete with the projection rod 1b, and there is a problem that it is difficult to efficiently roughen the concrete surface simply by pressing the roughening tool on the concrete surface.

Further, conventionally, a breaker for crushing concrete hits the chisel of the breaker with a piston rod which moves up and down by hydraulic pressure to drive the lower end edge of the breaker into the concrete surface. The breaker having the above-mentioned conventional structure has a problem that the chisel is struck by the piston rod, and the chisel and the piston rod are severely worn because the impact is applied by the impact, resulting in poor durability.

The present invention can solve the conventional problems of the concrete roughening machine and the breaker for concrete crushing described above, and can improve the workability, and the conventional work such as a bucket for scooping up crushed materials, a pile driving machine, etc. It is an object of the present invention to provide an attachment for excavator mounting that can be performed better.

[0007]

In order to achieve the above object, the present invention provides a bracket for removably fixing an upper end to the arm as an attachment removably attached to an arm tip of a shovel car. , A base plate fixed to the lower end of the bracket via a vibration-proof rubber, an eccentric wheel rotatably fitted in a shaft hole of a housing fixed to the base plate, and a hydraulic motor for rotating the eccentric wheel installed. A vibrating means,
Provided is a shovel attachment which comprises a concrete roughening tool, a bucket, a breaker chisel, or a pile driving material, which is integrally or detachably attached to a lower portion of the base plate.

In the above attachment, when the eccentric wheel is rotated in the shaft hole of the housing by the hydraulic motor,
The base plate vibrates vertically and horizontally according to the rotation of the eccentric wheel. This vibration is transmitted to the concrete roughening tool attached to the base plate, the bucket, the chisel of the breaker, or the pile driving material, causing them to vibrate. Therefore, in the concrete roughening tool, the roughening rod is cut into the concrete surface while vibrating to efficiently roughen the concrete surface. Further, in the breaker for concrete crushing, vibration is applied to the chisel instead of being hit by the piston rod, and the chisel is driven into concrete while vibrating. Therefore, the chisel is efficiently crushed without generating noise. Further, when the bucket is provided at the lower part of the base plate, the crushed material is scooped up while vibrating the bucket, so that the scooping work by the bucket can be performed efficiently and easily. Further, even when the pile driving tool is provided in the lower portion of the base plate, the downward pressing force can be applied while vibrating, so that the pile can be driven easily.

Further, when vibration occurs, the base plate to which the vibrating means is attached is connected to the bracket through the vibration isolating rubber, so that the vibration transmitted to the bracket side is absorbed by the vibration isolating rubber and passes through the bracket and the bracket. The vibration transmitted to the arm is very small.

The vibrating means may have a structure in which one eccentric wheel and one main shaft to which the eccentric wheel is fixed are provided, and the main shaft is rotated by a hydraulic motor. Further, as described in claim 3, two or more eccentric wheels and two eccentric wheels fixed to each other are provided.
It is good also as a composition provided with two or more main shafts, and rotating these main shafts with a hydraulic motor.

When the vibrating means comprises two or more eccentric wheels and two or more main shafts, the vibration generated by the vibrating means becomes strong.

Further, according to the present invention, in claim 4, the base plate is formed of a substantially rectangular flat plate, and the vibrating means is fixed to the center of the flat plate, and the four corners are respectively interposed by the cylindrical vibration isolating rubbers. And the vibration isolation rubbers installed at the four corners are orthogonal to the axial direction of the eccentric wheel, and the vibration generated by the vibrating means on the base plate is small in the left-right direction and in the vertical direction. Provides the shovel attachment according to any one of claims 1 to 3, which is set to be large.

As described above, when the rotation axis of the eccentric wheel and the axis of the anti-vibration rubber are set to be orthogonal to each other, the compression and tension directions of the anti-vibration rubber attached to both sides of the eccentric wheel are the rotational directions of the eccentric wheel. The horizontal vibration is suppressed and the horizontal vibration is reduced, and the vertical vibration mainly acts on the concrete roughening tool attached to the base plate and its lower part, causing the concrete roughening tool to vibrate significantly in the vertical direction. The concrete surface can be roughened or crushed efficiently.

Further, in the present invention, in the fifth aspect, a rectangular frame-shaped connecting portion is provided in the lower portion of the bracket, and four outer surfaces of the connecting portion are provided to project from the base plate so as to face each of these outer surfaces. The vibration-proof rubber is provided between the four mounting plates, the vibration-generating means is fixed to the lower surface of the base plate, and the concrete roughening tool is provided under the vibration-generating means.
The excavator attachment according to any one of claims 1 to 3, wherein a bucket, a breaker chisel, or a pile driving material is attached.

As described above, by arranging the four anti-vibration rubbers at right angles to each other, the vibrations in the left-right direction and the front-rear direction can be reduced, and vibrations mainly in the vertical direction can be applied to the base plate and the roughening device below the base plate. it can.

The concrete roughening tool provided at the bottom of the base plate is the bottom surface of the base plate or
It is preferable that a large number of roughening bars are provided so as to project from the lower surface of the plate that is detachably fixed to the lower surface of the base plate, and that the roughening tool is vibrated by the vibrating means to roughen the concrete surface. (Claim 6)

The breaker chisel provided in the lower portion of the base plate is composed of a cylindrical rod projecting downward from the lower surface of the base plate or the lower surface of the plate detachably fixed to the lower surface of the base plate. It is preferable that the concrete is crushed while being provided with vibration by the vibrating means. (Claim 7)

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to embodiments shown in the drawings. 1 to 4 show a first embodiment, and a shovel attachment A of the first embodiment is provided with a concrete roughening tool 10. The attachment A is attached to the tip of the arm 12 of the hydraulic excavator 11 and the tip of the operating rod 13a of the hydraulic cylinder 13 attached to the arm 12, and the orientation of the attachment A is variable by the operation of the hydraulic cylinder 13.

The attachment A is described in detail in FIG.
And the structure shown in FIG. 3, the bracket 14, the base plate 15, the vibration generator 16, and the four vibration isolation rubbers 17A.
-17D, the roughening tool 18 is provided.

The bracket 14 is provided with a pair of front and rear mounting plates 14b and 14c on the upper surface of a rectangular top plate 14a, and a pair of mounting holes 14d-1, 14d-2 and 1 respectively.
4e-1 and 14e-2 are drilled. Above mounting hole 14
The tip of the arm 12 is rotatably connected to the d-1 and 14e-1 by a shaft 19, while the mounting holes 14d-2 and 14e are attached.
The end of the operating rod 13a of the hydraulic cylinder is rotatably connected to the shaft -2 by the shaft 20. Working rod 13a
A link 21 is connected between the arm 12 and the arm 12.

Top plate 14 of the bracket 14
A pair of left and right mounting plates 14f and 14g are provided on the lower surface of a, and as shown in FIG. Rubber mounting holes 14h and 14i are formed.

The base plate 15 is a rectangular base plate 15a having anti-vibration rubber mounting plates 15 projecting upward from both left and right ends.
b and 15c are provided, and a pair of front and rear roughening tool mounting plates 15d and 15e are provided on the lower surface of the substrate 15b so as to project therefrom. Two pairs of anti-vibration rubber mounting holes 15f and 15g are formed in the anti-vibration rubber mounting plates 15b and 15c at positions corresponding to the anti-vibration rubber mounting holes 14h and 14i of the bracket. There is. Also, the roughening tool mounting plates 15d, 15
A pair of left and right mounting holes 15h and 15i are also formed in e.

The vibrating device 16 shown in FIG. 3 is fixed to the upper surface of the substrate 15a of the base plate 15. The vibrating device 16 includes a housing 15 and
It is fixed by a nut 30, and an eccentric wheel 26 is rotatably housed in a shaft hole 25a penetrating the center of the housing 25. With the eccentric wheel 26 installed inside, the front and rear surfaces of the housing 25 are closed by a pair of front and rear flanges 28A and 28B via stopper collars 27, and
A hydraulic motor 29 is fixed to the front flange 28A. The output shaft (not shown) of the hydraulic motor 29 has an eccentric shaft hole 2 of the eccentric wheel 26 via the flange 28A.
It is fixed to 6a. Therefore, the eccentric wheel 26 is eccentrically rotated in the shaft hole 25a of the housing 25 by the hydraulic motor 29, and the substrate 15 is eccentrically rotated in the left-right direction and the vertical direction via the housing 25.

The base plate 15 on which the vibrating device 16 is mounted and the bracket 14 are composed of four anti-vibration rubbers 17.
It is connected through A to 17D. Anti-vibration rubber 17A ~
17D is a columnar shape, and both end surfaces thereof are adhesively fixed to a pair of square mounting plates 31A and 31B.
Mounting holes 31a and 31b are formed at the four corners of 1A and 31B.

The above-mentioned four anti-vibration rubbers 17A to 17D are arranged such that each axis L1 is in a direction orthogonal to the rotation axis L2 of the eccentric wheel 26, that is, in FIG. While rotating in the left-right direction, the mounting plates 31A, 31B at both ends are arranged with the front-back direction facing, and the mounting holes 31b of the mounting plate 31B on the outer surface side are communicated with the mounting holes 15f, 15g of the base plate 15, while
Mount the mounting hole 31a of the mounting plate 31A on the inner surface side to the bracket 14
The mounting holes 14h and 14i are communicated with each other and fixed with bolts and nuts 32, respectively.

By arranging the anti-vibration rubbers 17A to 17D as described above, one of the left and right anti-vibration rubbers 17A and 17B is compressed according to the rotation of the eccentric wheel 26 in the left-right direction. Similarly, when one of the left and right anti-vibration rubbers 17C and 17D is compressed, the other pulls. With this configuration, the vibration in the left-right direction is absorbed, and the shake in the left-right direction of the base plate 15 is reduced,
The rotation of the eccentric wheel 26 causes the base plate 15 to largely swing in the vertical direction.

The roughening tool 18 is detachably attached to the roughening tool mounting plates 15d and 15e of the base plate 15. The roughening tool 18 has a pair of front and rear mounting plates 18b and 18c projecting from the upper surface of a rectangular plate 18a, and mounting holes 18 formed in these mounting plates 18b and 18c.
d and 18e are connected to the mounting holes 15h and 15i of the roughening tool mounting plates 15d and 15e, a cylindrical fixing member 34 is externally fitted through the mounting rod 33, and these are fixed by bolts and nuts. The lower surface of the plate 18a is shown in FIG.
As shown in FIG. 7, the roughening rods 35 are provided at a required interval. Each of the roughening rods 35 has a columnar shape and is provided with a conical protruding end 35a at the tip thereof.

As shown in FIGS. 1 and 2, the attachment A having the above structure is attached to the arm 12 of the shovel car 11 and the tip of the operating rod 13a. As shown in FIG. 4, the attachment A thus attached is
When the roughening rod 35 is driven while being pressed against the vertical concrete wall surface 40, the roughening rod 35 is moved to the concrete wall surface 40 by vertical vibration (horizontal vibration in the state of FIG. 4) loaded by the vibration generator 16. Cut and roughen the surface of the concrete wall surface 40. By moving the attachment A by the arm 12 and the hydraulic cylinder 13, the concrete wall surface 40 can be roughened over a required range.

Since vibration is applied to the roughening rod 35 during the roughening work, the projecting end 35a can easily bite into the concrete surface, and a large noise is not generated.

Instead of the roughening tool 18 shown in FIG.
The chisel 50 shown in FIG. 4 may be provided so as to project from the plate 51, and the plate 51 may be attached with the attachment plate portions 51a and 51b to the base plate 15 similar to the roughening tool 18. In this case, the attachment A becomes a breaker for concrete crushing. When the breaker is used, vertical vibration is applied to the chisel 50, and concrete can be crushed while vertically vibrating the chisel 50. Therefore, concrete can be crushed smoothly with less noise compared with a conventional chisel that is operated by striking by moving the piston rod up and down.

Furthermore, the pile driving material 55 shown in FIG. 5B can be attached to the base plate 15. The pile driving material 55 has a locking hole 5 at the lower end for fitting a pile (not shown).
A shaft 56 provided with 6a is projected from a plate 57, and the plate 57 is provided with mounting plates 57a and 57b to the base plate. When the pile driving member 55 is attached to the base plate 15, the pile driving member 55 is vertically vibrated, and the pile can be driven while vibrating.

Further, as shown in FIG. 5C, a bucket 58 having mounting plates 58a and 58b for attaching to the base plate 15 protruding from the upper end is provided, and the bucket 58 is attached to the base plate 1.
5 may be attached. In this case, since vibration is applied to the bucket 58, when the bucket 58 scoops up the crushed material and the like, the crushed material can be easily scooped up.

FIGS. 6A, 6B and 7 show a second embodiment of the present invention. In the second embodiment, the first end is rotatably supported in the housing 60 of the vibration device 16 by a pair of bearings 61A and 61B, respectively.
The main shaft 62A and the second main shaft 62B are provided. Of these two main shafts 62A and 62B, the first main shaft 62A is
Similar to the first embodiment, the output shaft 29a of the hydraulic motor 29 attached to the end face side of the housing 60 is connected, and the rotation of the output shaft 29a is transmitted to the first main shaft 62A. There is.

Spur gears 64A and 64B are fixed to one end of each of the main shafts 62A and 62B. These spur gears 64A and 64B mesh with each other, and
When 9 operates and the output shaft 29a and the first main shaft 62A rotate, the rotation of the first main shaft 62A is transmitted to the second main shaft 62B via the spur gears 64A and 64B. Further, eccentric wheels 65A and 65B are fixed to the other ends of the main shafts 62A and 62B.

As in the second embodiment, the vibrating device 16
If two sets of main shafts 62A, 62B and eccentric wheels 65A, 65B, which are sources of vibration, are provided, the vibration generation force increases. Therefore, in this case, the base plate 15
If the roughening tool 18 is attached to the plate, the area of the plate 18a provided with the roughening rod 35 protruding can be increased, so that the work efficiency of the roughening work can be improved.

Further, when the chisel 50 shown in FIG. 5 (A) is attached to the base plate 15 instead of the roughening tool 18, since the vibration becomes strong, the crushing force is improved. Further, even when the pile driving member 55 shown in FIG. 5 (B) is attached to the base plate 15, since the vibration becomes strong, the pile can be driven more quickly. Furthermore, even when the bucket 58 shown in FIG. 5C is attached to the base plate 15, even if the bucket 58 has a large capacity, it is necessary to apply sufficient vibration to facilitate the work of scooping up the crushed material. You can When the vibrating device 16 is configured to include two sets of main shafts and eccentric wheels in this manner, the work efficiency can be further improved by increasing the vibration generation force. Since the other structures and operations of the second embodiment are the same as those of the above-described first embodiment, the same elements are designated by the same reference numerals and detailed description thereof will be omitted.

FIG. 8 shows a third embodiment in which a roughening bar 35 is provided on the lower surface of the base plate 15a of the base plate 15 so as to project. That is, the roughening tool is not provided separately from the base plate but integrated with the base plate 15. Further, the anti-vibration rubbers 17A to 17D (17D is not visible in FIG. 8) that connect the base plate 15 and the bracket 14 have eccentric wheels (not visible in FIG. 6) of the vibration oscillating device 16 in the axial direction. The same direction as the axis of.
Even with this configuration, it is possible to apply vibration to the roughening bar 35 to roughen the concrete surface.

FIGS. 9A and 9B show a fourth embodiment. The bracket 14 of the attachment A is provided with a square frame-shaped connecting portion 70 at its lower portion, and four outer surfaces 70a of the connecting portion 70. , 70b, 70c, 70d are provided with anti-vibration rubber 1
The inner surface mounting plate 31A of 7A, 17B, 17C, 17D is fixed. On the other hand, the base plate 15 has a substrate 15a
Further, mounting plates 80a to 80d facing the four surfaces 70a to 70d of the connecting portion 70 are provided so as to project, and the vibration damping rubbers 17A to 1A are provided.
The outer mounting plates 31B of 7D are fixed.

Further, the substrate 15a of the base plate 15
The vibrating device 16 is fixed to the lower surface of the
A roughening tool attachment portion 82 is provided on the lower surface of the housing 25 ′ of FIG. The roughening tool 18 is attached to the roughening tool mounting portion 82.
Is detachably attached.

With the above structure, the vibration-proof rubbers 17A to 17A are provided.
Since D is arranged in the orthogonal direction, it is possible to absorb the vibration in the left-right direction and the front-rear direction, and reduce the vibration transmitted to the arm 12 side. Moreover, the roughening tool 18 can be greatly vibrated in the vertical direction, and the roughening work of the concrete surface can be efficiently and quickly performed.

Incidentally, also in the above-described third and fourth embodiments, the vibration generating device may be provided with two sets of main shafts and eccentric wheels as in the second embodiment. The number of eccentric rotors of the vibration oscillating device is not limited to one or two, and may include three or more eccentric rotors.

[0042]

As is apparent from the above description, the excavator attachment according to the present invention is provided with a vibrating device and can be used as a concrete roughening tool, a chisel of a concrete breaking breaker, a bucket or a pile driving tool by vibration. Since vertical vibration is applied, the required work can be efficiently performed with low noise.

Particularly, when the axial direction of the cylindrical vibration-proof rubber and the axial direction of the eccentric wheel are arranged in a direction orthogonal to each other,
The vibration in the left-right direction is absorbed by the anti-vibration rubber, the shake in the left-right direction is reduced, and the required vibration in the vertical direction can be effectively applied.

Further, in the case where the concrete surface roughening tool, the breaker chisel, the bucket and the pile driving tool can be detachably attached to the lower part of the attachment, they can be selectively used according to the work, and are highly versatile. It can be

Further, when the vibration oscillating device has a structure including two or more eccentric wheels and two or more main shafts, the vibration generated by the oscillating means becomes strong, so that the roughening tool is attached to the base plate. In this case, the area of the base plate can be increased, and the work efficiency of the roughening work can be improved. Further, in this case, if a chisel is attached to the base plate, the vibration is strong and the crushing force is improved. Further, even when the pile driving material is attached, since the vibration is strong, the pile can be driven more quickly.
Furthermore, even when a large capacity bucket is attached,
It is possible to add sufficient vibration to the extent that the work of scooping up the crushed material can be facilitated. When the vibrating device is configured to include two or more sets of main shafts and eccentric wheels in this way, work efficiency can be further improved.

[Brief description of the drawings]

FIG. 1 is a front view of a shovel car provided with an attachment according to a first embodiment of the present invention.

FIG. 2 shows the attachment according to the first embodiment,
(A) is a front view, (B) is a side view, (C) is a bottom view of the roughening tool.

FIG. 3 is a partially exploded perspective view of the attachment according to the first embodiment.

FIG. 4 is a work explanatory diagram of the first embodiment.

5A and 5B show members to be attached instead of the roughening tool of the first embodiment, FIG. 5A is a front view showing a breaker chisel, FIG. 5B is a front view showing a pile driving member, and FIG. It is a perspective view shown.

FIG. 6 shows the attachment of the second embodiment,
(A) is a front view, (B) is a side view.

FIG. 7 is a view showing the attachment according to the second embodiment.
It is sectional drawing in the VI-VI line of (A).

FIG. 8 is a perspective view showing an attachment according to a third embodiment.

FIG. 9 shows the attachment of the fourth embodiment,
(A) is a front view and (B) is a sectional view taken along line BB of (A).

FIG. 10 is a schematic view showing a conventional example.

[Explanation of symbols]

 A Attachment 11 Excavator 12 Arm 13 Hydraulic Cylinder 14 Bracket 15 Base Plate 16 Vibration Generator 17A to 17D Anti-vibration Rubber 18 Eye Rubbing Tool 25 Housing 26 Eccentric Wheel 29 Hydraulic Motor 50 Chisel 55 Pile Driving Material 58 Bucket

Claims (7)

[Claims] 1. An attachment detachably attached to an arm tip of a shovel car, the bracket having an upper end detachably fixed to the arm,
A base plate fixed to the lower end portion of the bracket via a vibration-proof rubber, and an eccentric wheel rotatably accommodated in a housing fixed to the base plate and a hydraulic motor for rotating the eccentric wheel installed. Means and a concrete roughening tool, a bucket, which is integrally or detachably attached to the lower part of the base plate,
Excavator attachment with breaker chisel or piling. 2. The vibrating means comprises one eccentric wheel and one main shaft to which the eccentric wheel is fixed, and the main shaft is rotated by a hydraulic motor.
Attachment for excavator installation described in. 3. The vibrating means comprises two or more eccentric wheels, and two or more main shafts to which the eccentric wheels are fixed, respectively, and these main shafts are rotated by a hydraulic motor. Attachment for excavator installation according to 1. 4. The base plate is made of a substantially rectangular flat plate, and a vibrating means is fixed to the center of the base plate, and four corners of the base plate are connected to the bracket via the cylindrical vibration damping rubber, respectively, and the axis line of the eccentric wheel is formed. The axial directions of the anti-vibration rubbers installed at the above-mentioned four corners are orthogonal to the direction, and the vibration generated on the base plate by the vibrating means is set so that the horizontal direction is small and the vertical direction is large. The shovel attachment according to any one of claims 1 to 3. 5. A rectangular frame-shaped connecting portion is provided at a lower portion of the bracket, and the connecting portion is provided between four outer surfaces of the connecting portion and four mounting plates that are provided to project from the base plate so as to face each of these outer surfaces. 2. A vibration proof rubber is interposed, the vibration generating means is fixed to the lower surface of the base plate, and the concrete roughening tool, bucket, breaker chisel or pile driving material is attached to the lower part of the vibration generating means. To claim 3
The attachment for mounting a shovel according to any one of 1. 6. A concrete roughening tool provided at a lower portion of the base plate has a large number of roughening bars projecting from a lower surface of the base plate or a lower surface of a plate detachably fixed to the lower surface of the base plate. The shovel attachment according to any one of claims 1 to 5, wherein the concrete roughening bar is roughened by vibrating the roughening rod by means. 7. The breaker chisel provided at the lower portion of the base plate is composed of a cylindrical rod protruding downward from the lower surface of the base plate or the lower surface of the plate detachably fixed to the lower surface of the base plate, and has a conical shape at its lower end. The excavator attachment according to any one of claims 1 to 5, wherein a projection is provided and the concrete is crushed while the vibration is applied by the vibrating means.