JPH1158263A - Breaker device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To automatically cope with the variation of the resistance against the breaker without requiring adjusting operation of an operator and to smoothly and easily carry out continuous chipping work even in the case when resistance applied on the breaker varies at the time of chipping a wall surface to repair. SOLUTION: This device is furnished with a breaker tool 11 to chip a wall surface as it is pressurized on the wall surface to be repaired and a guide cell 12 to support the breaker tool 11 free to reciprocate forward and backward, and it is constituted so that the guide cell 12 is installed on a movable arm. In this case, the breaker tool 11 is energized in the forwarding direction by a gas spring 30, and the gas spring 30 is arranged between a rear end flange 13f of a slide plate 23 integrated with a hydraulic breaker main body 13 connected to the breaker tool 11 and a cover member 26 on the side of the guide cell 12.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a breaker device for performing a "hanging" operation on a wall or the like to be repaired in a concrete structure or the like.

[0002]

2. Description of the Related Art Conventionally, in a concrete structure or the like, "hanging" work is performed on a wall surface to be repaired.
The structure of the so-called breaker device includes a breaker tool pressed against a wall surface to be repaired and breaking the wall surface, and a support member for supporting the breaker tool to move forward and backward, and attaching the support member to the movable arm. Such is generally well known. Further, for example, as disclosed in Japanese Utility Model Application No. Hei 6-11008 filed by the present applicant, a movable arm having such a breaker mechanism is used by being connected to a heavy machine such as a power shovel. This is commonly done.

[0003] In the above-mentioned breaker device, the breaker tool is usually a cylinder device (generally a hydraulic cylinder).
And is supported by a support member so as to be able to move forward and backward with respect to the wall surface, and is pressed against the wall surface by the operation of the hydraulic cylinder. That is, in this case, the tip position of the breaker tool is determined according to the stroke of the hydraulic cylinder, and accordingly, the amount of cut of the breaker tool into the repair wall surface is determined.

[0004]

By the way, when a wall to be repaired is peeled off by using the above-mentioned breaker device,
In the process of the hanging work, a step corresponding to the amount of cut of the breaker tool has occurred between the part that has been hung and the part that will be hung from now on, but in order to continuously connect the inside of the repair area of the wall, When the breaker tool is operated while being turned back in a zigzag manner, the resistance applied to the tool particularly at this turning point increases. Further, in a place where the wall surface to be repaired has irregularities, the degree of the step differs according to the irregularities, and therefore, the resistance applied to the tool also varies.

However, in the conventional breaker device, as described above, since the cutting amount of the breaker tool is determined in accordance with the stroke of the hydraulic cylinder, it is difficult to continuously and smoothly smooth the repair area. , It is necessary for the operator to respond to the lightness of the resistance applied to the breaker tool by performing hydraulic operation, and the operation is very troublesome,
Another problem was that it was difficult.

The present invention has been made in view of the above technical problem, and does not require an operator's adjustment operation even when the resistance applied to a breaker tool fluctuates when a wall to be repaired is peeled. It is an object of the present invention to provide a breaker device that can automatically cope with it and can smoothly and easily perform a continuous fishing operation.

[0007]

SUMMARY OF THE INVENTION Therefore, an invention according to claim 1 of the present application (hereinafter referred to as a first invention) includes a breaker tool pressed against a wall surface to be repaired and breaking the wall surface, A support member that supports the tool so that it can move forward and backward,
In the breaker device having the support member attached to the movable arm, the breaker tool is urged in a forward direction by an urging means.

Further, the invention according to claim 2 of the present application (hereinafter referred to as the invention)
According to a second aspect of the present invention, in the first aspect, the biasing means is disposed between the breaker tool side and the support member side.

Further, the invention according to claim 3 of the present application (hereinafter referred to as “the invention”)
According to a third aspect, in the first or second aspect, the movable arm is attached to a heavy machine such as a power shovel.

[0010]

According to the first aspect of the present invention,
Since the breaker tool is urged in the forward direction by the urging means, conventionally, the position of the tip of the breaker tool is determined by the stroke of the hydraulic cylinder (that is, the cut amount of the breaker tool with respect to the repair wall). As described above, the tip position of the breaker tool is not fixed, and it is possible to automatically follow the lightness of the resistance applied to the breaker tool within the range of the urging force of the urging means. Therefore, when removing the wall to be repaired, even if the resistance applied to the breaker tool fluctuates, it can be automatically handled without requiring the operator's adjustment operation, making continuous lifting work smooth and easy. It can be carried out.

Further, according to the second aspect of the present invention, basically the same effects as those of the first aspect can be obtained. In particular, since the urging means is disposed between the breaker tool side and the support member side, it is possible to directly, that is, reliably apply the urging force to the breaker tool.

Further, according to the third aspect of the present invention, basically the same effects as those of the first or second aspect can be obtained. Moreover, since the movable arm is attached to a heavy machine such as a power shovel, there is no need to newly prepare a dedicated machine for using the breaker device. Hanging work can be performed by the breaker device.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention applied to a breaker device mounted on a heavy machine such as a power shovel will be described in detail with reference to the accompanying drawings. FIG. 1 is an explanatory side view of a power shovel 1 to which a breaker device according to the present embodiment is attached. As shown in FIG.
Comprises a first movable arm 3 pivotally supported at the front of the main body 2 so as to be vertically rotatable, and a second movable arm 4 pivotally supported at the tip of the first movable arm 3 so as to be vertically rotatable. A breaker device 10 is attached to a tip of the second movable arm 4 via a bracket assembly 5 (breaker bracket assembly).

Power shovel body 2 and first movable arm 3
Between the first movable arm 3 and the first movable arm 3
A hydraulic cylinder 6 is connected, and a second hydraulic cylinder 7 for rotating the second movable arm 4 up and down is connected between an upper part of the first movable arm 3 and a rear part of the second movable arm 4. I have. Then, these first and second hydraulic cylinders 6,
7 by driving each of them to expand and contract.
As shown by an imaginary line, the first movable arm 3 is pivoted about the pivot shaft 3s (that is, the first and second movable arms 3,
4), or only the second movable arm 4 around the pivot 4s can be rotated up and down.

A third hydraulic cylinder 8 for rotating the breaker device 10 up and down through the breaker bracket assembly 5 is connected between the upper part of the second movable arm 4 and the upper part of the breaker bracket assembly 5. By driving the third hydraulic cylinder 8 to extend and retract, the breaker device 10 is moved up and down through the breaker bracket assembly 5 around the connection shaft 5s between the second movable arm 4 and the breaker bracket assembly 5. It can be rotated.

FIG. 2 is an explanatory plan view of the power shovel 1 to which the breaker device 10 is attached. In FIG. 2, illustration of the first to third hydraulic cylinders 6, 7, 8 is omitted in order to avoid complicating the drawing and to facilitate understanding thereof. As can be clearly seen from FIG.
A guide cell 12 as a supporting member for supporting the breaker tool 11 so as to be able to move forward and backward is attached to the breaker bracket assembly 5 via a pivot shaft. 12 is the pivot axis 1
A hydraulic cylinder 15 (swing cylinder) that rotates around 2s is arranged. The swing cylinder 15
The cylinder body 15b is rotatably connected to the breaker bracket assembly 5, while the distal end of the piston rod 15p is rotatably connected to the guide cell 12. Is driven to expand and contract, whereby the pivot shaft 12s
2, the guide cell 12 can be rotated in a range shown by a chain line in FIG.

As shown in detail in FIGS. 3 to 5, the guide cell 12 has a base frame 21 formed of a tubular body having a rectangular cross section in a vertical section, and the base frame 21 is a bracket 22 (base bracket). Through a breaker bracket assembly 5. A hydraulic breaker main body 13 having the breaker tool 11 inserted therein is disposed inside the base frame 21, and the breaker main body 13 having the breaker tool 11 inserted therein and the front portion 1 thereof.
3 b is fixed to a pair of upper and lower slide plates 23 slidably disposed in the base frame 21. As can be clearly understood from FIG. 5, the left and right ends 23 a of each slide plate 23 in a side view are bent in the vertical direction, and the bent ends 23 a are formed at four corners of the base frame 21 in a side view. Are slidably held in a guide rail 24 provided at the front and rear sides.

A bracket 25 (support bracket) is fixed to the rear end of the base frame 21 via a rear end flange 21f, and the rear of the guide cell 12 is supported via the support bracket 25 and the rear end flange 21f. A cover member 26 covering the end side is fixed. Inside the cover member 26, a rear spring receiver 32 that receives a gas spring 30 described later is arranged. A support plate 27 having a front spring receiver 31 for receiving the gas spring 30 is fixed to a rear end flange 13f of the slide plate 23 integrated with the hydraulic breaker body 13.

A gas spring 30 is provided between the front and rear spring receivers 31 and 32 as urging means for urging the breaker tool 11 in its forward direction. The gas spring 30 encloses a predetermined gas (for example, nitrogen gas in the present embodiment) inside a two-stage bellows-shaped hollow body formed of an elastic body such as rubber (rubber). , For example, via a check valve (not shown), and generates an urging force corresponding to the pressure of the sealed gas. Since the gas spring 30 is the same as a well-known gas spring, illustration and detailed description of its internal structure and the like are omitted.

A stopper member 33 (front stopper) is attached to the rear surface of the support bracket 25.
Rear end flange 13 of slide plate 23 integrated with hydraulic breaker body 13 that moves forward by the urging force of gas spring 30
f is stopped by the front stopper 33. In the present embodiment, the front stopper 3 of the rear end flange 13f is used.
The dimensional relationship of each part and the spring characteristics of the gas spring 30 are set so that a biasing force of 200 to 300 kg is generated in the state of contact with the gas spring 30. A stopper member 34 (rear stopper) is also attached to the inner surface side of the cover member 26. When the breaker tool 11 and the hydraulic breaker body 13 are retracted, if the amount of retraction is greater than a certain value,
When the support plate 27 comes into contact with the rear stopper 34, further retreat is restricted. This allows
The gas spring 30 is protected from excessive compression.

In the above configuration, when the wall surface to be repaired (see FIG. 2) is hung by the breaker tool 10, the rotation state of the body 2 of the power shovel 1 in the horizontal plane, the first and second rotations,
By appropriately adjusting the rotating state of the movable arms 3 and 4 and the breaker bracket assembly 5 in the vertical plane (see FIG. 1) and the rotating state of the guide cell 12 driven by the swing cylinder 15, the breaker is appropriately adjusted. Initially, the position of the tool 11 on the wall surface and the cut amount with respect to the wall surface are initially set. Then, by driving the hydraulic breaker body 13, the hanging operation is started. For example, as shown by a dashed line in FIG. 1, the lifting operation is continuously performed by operating the breaker tool 11 in a predetermined repair area Sr in a zigzag manner with the repair width Wr. Will be

At this time, in this embodiment, since the gas spring 30 is provided as urging means for urging the breaker tool 11 in the forward direction, the tip position of the breaker tool is conventionally determined by the stroke of the hydraulic cylinder. The tip position of the breaker tool 11 is not fixed, as in the case where the cut amount of the breaker tool with respect to the repair wall surface is determined. That is, when the breaker tool 11 is folded back in a zigzag shape and operated, the change in resistance applied to the tool 11 at the turning point and the change in resistance applied to the tool 11 due to the unevenness of the wall surface to be repaired.
Can be automatically followed within the range of the urging force of the gas spring 30 with respect to the lightness of the resistance applied to the gas spring 30. Therefore, even when the resistance applied to the breaker tool 11 fluctuates when removing the wall surface to be repaired, it is possible to automatically respond without the need for an operator's adjustment operation, and a continuous lifting operation can be performed smoothly and easily. Can be done.

The gas spring 30 is connected to the breaker tool 1.
1 and the guide cell 12 supporting the same, the biasing force can be applied to the breaker tool 11 directly, that is, reliably. Further, since the movable arm provided with the guide cell 12 is attached to the excavator 1, there is no need to newly prepare a dedicated machine for using the breaker device 10, and the existing heavy machine (the excavator 1) can be used. The hanging operation by the breaker device 10 can be performed by using the above (1).

FIGS. 6 to 8 show modifications of the embodiment shown in FIGS. Next, this modified example will be described. In the following description, FIGS.
The same reference numerals are given to the same components as those in the embodiment, and further description is omitted. In the breaker device 40 according to this modification, the guide cell 42 includes a pair of left and right slide plates 45 and side plates 46 erected on the slide plates 45, as can be clearly seen from FIG. The hydraulic breaker body 43 having the 41 inserted therein and the front portion 43b thereof are fixed with bolts. still,
Hydraulic hoses 44A and 44B for supplying and discharging hydraulic oil are connected to the hydraulic breaker body 43.

The pair of slide plates 45 are arranged on a base plate 51 of a base assembly 50, and can slide between a guide rail 52 fastened and fixed to the base plate 51 and the base plate 51. . Also, as shown in FIGS. 6 and 7, the base plate 51
A stopper plate 53 is fastened and fixed to the front end of the hydraulic circuit breaker body 43. When the hydraulic breaker body 43 with the breaker tool 41 inserted therein and the front portion 43b thereof are urged forward by the urging force of the gas spring 30, the stopper plate 53 slides. The plate 45 is abutted against the stopper plate 53 to determine its forward position.

On the other hand, a support member 54 formed in a T-shape in plan view (see FIG. 7) is provided on the rear end side of the base plate 51.
The rear spring receiver 32 attached to the support member 54 and the front spring receiver 31 attached to a support plate 55 fixed to the rear end of a support member 46 integral with the hydraulic breaker body 43. The gas spring 30 is disposed between the two. In the case of this modification, when compared with the breaker device 10 shown in the embodiment of FIGS.
Mainly, the basic operation and operation can be achieved only by the difference in the slide mechanism of the hydraulic breaker main body 43 with the breaker tool 41 inserted therein and the front portion 43b thereof, the stopper mechanism on the front side for the slide operation, the support structure of the gas spring 30, and the like. The effect is the same.

The present invention is not limited to the above embodiment, and it goes without saying that various improvements or design changes can be made without departing from the scope of the present invention. For example, in each of the above embodiments, a so-called gas spring is used as the urging means for urging the breaker tool in the forward direction. However, the present invention is not limited to this. For example, a mechanical spring member such as a coil spring or a leaf spring may be used. Or rubber (rubber)
Any other member or object can be used as long as it has an urging force, such as an elastic body. Also,
In each of the above embodiments, the urging means (gas spring)
Although the breaker tool is urged by the action of the compression force, it is also possible to obtain the urging force by the action of the tension force using, for example, a tension coil spring or the like. Further, in each of the above-described embodiments, the movable arm having the guide cell is attached to the power shovel, which is an existing heavy machine, but instead, the guide cell is provided to a dedicated machine for using the breaker device. Of course, it is good even if it is made to attach.

[Brief description of the drawings]

FIG. 1 is an explanatory side view of a power shovel to which a breaker device according to an embodiment of the present invention is attached.

FIG. 2 is an explanatory plan view of a power shovel to which the breaker device according to the above embodiment is attached.

FIG. 3 is an explanatory front view of the breaker device according to the embodiment.

FIG. 4 is an explanatory plan view of the breaker device according to the embodiment.

FIG. 5 is an explanatory side view of the breaker device according to the embodiment.

FIG. 6 is an explanatory front view of a breaker device according to a modification of the embodiment.

FIG. 7 is an explanatory plan view of a breaker device according to the modification.

FIG. 8 is an explanatory side view of a breaker device according to the modification.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Power shovel 3 ... 1st movable arm 4 ... 2nd movable arm 10, 40 ... Breaker device 11, 41 ... Breaker tool 12, 42 ... Guide cell (support member) 30 ... Gas spring (biasing means)

Claims (3)

[Claims] 1. A breaker device comprising: a breaker tool pressed against a wall surface to be repaired to break the wall surface; and a support member for supporting the breaker tool so as to be able to move forward and backward, wherein the support member is attached to a movable arm. 3. The breaker device according to claim 1, wherein the breaker tool is urged in a forward direction by an urging means. 2. The breaker device according to claim 1, wherein said urging means is disposed between said breaker tool side and said support member side. 3. The apparatus according to claim 1, wherein the movable arm is attached to a heavy machine such as a power shovel.
Or the breaker device according to claim 2.