JP2022029020A - Breaker mounting jig - Google Patents

Abstract

To provide a breaker mounting jig capable of mounting a manpower breaker even on a backhoe of a relatively small machine body weight not having ability to switch a part of hydraulic system to supply the same to a dedicated hydraulic breaker attachment, and a backhoe on which a manpower breaker is mounted.SOLUTION: There is provided a breaker mounting jig 3 for mounting a manpower breaker 2 on an arm 13 from which a bucket 14 of a backhoe 1, which is formed by attaching the bucket 14 to the distal end of a boom 12 through the arm 13, is removed, the breaker mounting jig comprising a mount part 31 which is removably connected to the arm 13, and a fixing part 32 which fixes the manpower breaker 2 to the mount part 31, the fixing part 32 comprises a support member 321 which is connected to the mount part 31, an externally-fitting member 322 which can externally fit the manpower breaker 2, and an elastic member 323 which is inserted between the support member 321 and the externally-fitting member 322.SELECTED DRAWING: Figure 2

Description

The present invention relates to a mounting technique for mounting a human-powered circuit breaker on a backhoe.

In the repair work or repair work of a concrete structure, a concrete breaker (hydraulic breaker, pneumatic breaker, etc.) may be used to scrape a part of the concrete member. If the chipping work using a concrete breaker is performed manually, the burden on the workers is large. Therefore, a chipping work method has been adopted that makes it possible to reduce the burden on workers by holding the concrete breaker using a jig, a frame, or the like.
For example, Patent Document 1 discloses a chipping device that is suspended by a wire and is capable of chipping a concrete surface while moving in the vertical direction along the concrete surface. The reaction force at the time of crushing is secured by its own weight, but since it is suspended from above, it can move in the vertical direction, but it needs to be refilled each time it moves in the horizontal direction. ..
Further, Patent Document 2 discloses a jig for a concrete breaker including a top material that holds the breaker main body swingably and a plurality of elastic members that support the top material. Since the breaker body is held so that it can swing, it is possible to perform chipping work within the reach of the concrete breaker by tilting the breaker body, but for a wide area such as a wall surface or floor surface. It is necessary to refill each time when performing the chipping work. Similar to Patent Document 1, the concrete breaker must be replaced manually.
On the other hand, Patent Document 3 discloses a backhoe equipped with a dedicated hydraulic breaker attachment that utilizes a part of hydraulic pressure at the tip of the boom. Since the backhoe can run on its own, it is possible to easily work on any wide range of up, down, left, and right by freely changing the direction of the breaker within the operating range of the boom and arm. Further, since the replacement as in Patent Documents 1 and 2 is not required, the burden on the worker can be reduced.

Japanese Unexamined Patent Publication No. 2002-004593 Japanese Unexamined Patent Publication No. 2017-221993 Jikkai Sho 63-9349 Gazette

However, the backhoe, which can be equipped with a dedicated hydraulic breaker attachment as shown in Patent Document 3, is intended for those with a relatively large body weight because a part of the hydraulic system is switched to the breaker attachment and supplied. Become. Therefore, in a narrow environment where the space required for backhoe work cannot be secured, it is often necessary to perform manual chipping work. In recent years, there is a legal limit on working hours of 2 hours / day / person for human-powered chipping, and as labor shortages become more serious, there is a further concern that productivity will decline.
Generally, when the weight of the aircraft falls below 500 kg, the amount of hydraulic pressure installed in the aircraft is small, and it is not possible to secure the hydraulic pressure other than the hydraulic pressure required for the movement of the aircraft and the operation of the boom and arm (the hydraulic pressure required for the breaker). .. It is conceivable to switch the hydraulic pressure for backhoe movement when using a hydraulic breaker, but since it will not be possible to immediately evacuate in the event of an unforeseen situation, the machine manufacturer does not provide a hydraulic pressure switching function. There is a fact.

The present invention makes it possible to mount a human-powered circuit breaker even on a backhow with a relatively small body weight that does not have the ability to switch a part of the hydraulic system and supply it to a dedicated hydraulic breaker attachment. Since a mechanism capable of cushioning the impact caused by the impact of the hydraulic pressure is provided, it is an object of the present invention to provide a breaker mounting jig capable of alleviating the impact on both the back hoof and the breaker main body.

In order to achieve the above object, one aspect of the circuit breaker mounting jig according to the present invention is a circuit breaker mounting jig for mounting an independent drive type breaker to the arm at the tip of the boom of the back ho, and the mount portion to be mounted on the arm. It is characterized in that a breaker fixing portion for mounting the breaker and a cushioning portion between the mount portion and the breaker fixing portion are provided.
The "independent drive type breaker" referred to here includes the "human-powered breaker" described later, which is not provided with the driving force from the backhoe, and the "breaker fixing portion" and the "buffering portion" will be described later, respectively. It shall include an "outer fitting member" for mounting and fixing the breaker and an "elastic member" for cushioning the impact of the breaker.

Since an independent drive type breaker is attached to the arm at the tip of the boom of the backhoe, which is one aspect of the present invention, even a backhoe that does not have enough hydraulic capacity to attach a dedicated breaker attachment is a general-purpose human power. You can use the breaker for. Further, by providing a mount portion to be mounted on the arm, a breaker fixing portion for mounting the breaker, and a cushioning portion between the mount portion and the breaker fixing portion, both the backhoe and the breaker main body are provided. The impact on the circuit breaker can be mitigated.

Further, in order to achieve the above object, one aspect of the breaker mounting jig according to the present invention is to mount a breaker for human power on the arm from which the bucket of the back hoe is mounted via an arm at the tip of the boom. It is a jig and consists of a mount portion that is detachably connected to the arm and a fixing portion that fixes the breaker to the mount portion. The fixing portion includes a bearing member connected to the mount portion and the support member. It is characterized by including an outer fitting member into which a breaker can be fitted externally, and an elastic member interposed between the bearing member and the outer fitting member.
The circuit breaker for human power here is a breaker powered by compressed air or hydraulic pressure sent from a compressor or hydraulic unit prepared separately from the back hoe on which the breaker is mounted. It means a general-purpose breaker for performing work.
The compressed air and pressure oil sent out from the compressor and the hydraulic unit are supplied to the breaker via the air hose and the hydraulic hose.

Since the fixing portion, which is one aspect of the present invention, includes an elastic member interposed between the support member and the outer fitting member, when the flea tip of the breaker is pressed against the object to be chipped. The elastic member acts as a cushioning material against the impact force generated in the invention, and the load on the breaker mounting jig, the back ho arm, and the boom can be alleviated. That is, by moving the breaker only in the striking direction, the striking force can be concentrated on one point of the striking object, while the flea tip moves in the direction perpendicular to the striking as in the case of manually operating the breaker. It is possible, and for hitting objects with uneven strength, the chisel tip moves to a position with low strength, which makes it possible to improve the fishing effect. Therefore, according to one aspect of the circuit breaker mounting jig according to the present invention, it is possible to move the breaker in the direction perpendicular to the impact, and it is possible to reproduce the impact performance close to the operation of the breaker by human power. It should be noted that even with respect to an excessive pushing force of the backhoe to the chipping target, the pushing force can be appropriately absorbed by the elastic deformation of the intervening elastic member in the front-rear direction.

Further, in another aspect of the breaker mounting jig according to the present invention, the fixing portion is further provided with a first connecting member for connecting the support member and the outer fitting member.

According to this aspect, since the fixing portion further includes a first connecting member for connecting the support member and the outer fitting member, the impact generated when the flea tip of the breaker is chipped and pressed against the object is not affected. A more stable cushioning effect can be expected from the elastic member and the first connecting member jointly against the impact force.

Further, in another aspect of the breaker mounting jig according to the present invention, the fixing portion is provided at two or more places before and after the breaker.

According to this aspect, since the fixing portions are provided at two or more places in front of and behind the breaker, the breaker in the breaker mounting jig can reduce the impact force due to the impact generated by the breaking work of the breaker. It is possible to effectively restrain the fluctuation of the position and realize a stable chipping work with less runout of the chisel tip.

Further, in another aspect of the breaker mounting jig according to the present invention, the first connecting member is made of a bar and is penetrated through the elastic member.

According to this aspect, the first connecting member that connects the support member fixed to the mount portion and the outer fitting member that grips the breaker is rod-shaped and penetrates the elastic member, so that the breaker is used. The impact force transmitted to the tip of the flea can be immediately transmitted to the elastic member as a cushioning material as the behavior between the two points with the outer fitting member as the point of action and the bearing member as the fulcrum, effectively absorbing the impact force. Enables. Further, it can be expected to have an effect of restraining excessive deformation of the intervening elastic member by being connected by the rod-shaped first connecting member.

Further, in another aspect of the breaker mounting jig according to the present invention, the outer fitting member is divided into upper and lower divided bodies made of an elastic body, and the divided body is penetrated through the divided body and from the upper and lower end surfaces of the divided body. It is characterized in that it is composed of a plurality of second connecting members arranged so as to press-fit.

According to this aspect, the outer fitting member is arranged so as to penetrate the vertically divided divided body made of an elastic body and press-fit the divided body from the upper and lower end surfaces of the divided body. Since it is composed of a plurality of second connecting members, the steel breaker can be securely held in close contact with the body, so that it can withstand the impact of a blow. Further, since the outer fitting member is also an elastic body in addition to the elastic member and the first connecting member, the impact force transmitted to the chisel tip of the breaker can be absorbed more efficiently.

According to the circuit breaker mounting jig of the present invention, a human-powered circuit breaker can be mounted even on a backhoe with a small body weight that does not have the ability to switch a part of the hydraulic system and supply it to a dedicated hydraulic breaker attachment. Since a mechanism is provided that can cushion the impact caused by the impact of the breaker, the impact on both the backhoe and the breaker body can be mitigated.

It is a side view of the backhoe before mounting the breaker mounting jig and (b) the backhoe after mounting according to the embodiment of the present invention. It is a bird's-eye view of the circuit breaker mounting jig equipped with the human-powered breaker according to the embodiment of the present invention. (A) plan view, (b) side view (AA arrow view of FIG. 3), (c) cross-sectional view (FIG. 3) of a breaker mounting jig equipped with a human-powered breaker according to an embodiment of the present invention. BB arrow view) and (d) cross-sectional view (another form of part C in FIG. 3). It is (a) plan view, (b) side view (AA arrow view of FIG. 4) of the circuit breaker mounting jig which mounted the breaker for human power which concerns on embodiment of this invention, and the breaker fluctuates by an impact force. It is a conceptual diagram showing the state of doing.

Hereinafter, the breaker mounting jig according to the embodiment of the present invention will be described with reference to the attached drawings. In the present specification and the drawings, substantially the same components are designated by the same reference numerals to omit duplicate explanations.

First, with reference to FIGS. 1 and 2, an overall outline of the breaker mounting jig according to the embodiment will be described. FIG. 1 is a side view of (a) the backhoe before mounting the breaker mounting jig and (b) the backhoe after mounting the breaker mounting jig according to the embodiment of the present invention, and FIG. 2 is a human power according to the embodiment of the present invention. It is a bird's-eye view of the mounting jig of the breaker equipped with the breaker for.

From FIG. 1, the circuit breaker mounting jig 3 of the present embodiment has a backhoe main body 11 and a backhoe to which a bucket 14 is attached via an arm 13 connected to the tip of the boom 12 and a boom 12 connected to the backhoe main body 11. The breaker 2 for human power can be attached to the arm 13 from which the bucket 14 of 1 is removed.

From FIG. 2, the circuit breaker mounting jig 3 of the present embodiment includes a mount portion 31 that is detachably connected to the arm 13, and a fixing portion 32 that fixes the circuit breaker 2 for human power to the mount portion 31. The circuit breaker 2 for human power is mainly composed of a breaker main body 21, a chisel 22 attached to the tip of the breaker main body 21, a handle 23, a grip type switch 24 and a hose 25 described later. The circuit breaker 2 for human power here is a breaker powered by compressed air or hydraulic pressure sent from a compressor or hydraulic unit (not shown) prepared separately from the back hoe 1 on which the circuit breaker 2 for human power is mounted. It means a general-purpose circuit breaker in which a member grips and scrapes concrete or the like. The compressed air and pressure oil sent out from the compressor and the hydraulic unit are supplied to the human-powered breaker 2 via the hose 25 (air hose, hydraulic hose, etc.).
The compressor and hydraulic unit (not shown) are placed in a predetermined place separately from the backhoe 1. By providing a margin in the length of the hose 25, a wide operating range of the backhoe 1 can be secured.

Next, the detailed structure of the breaker mounting jig according to the embodiment will be described with reference to FIGS. 3 and 4. FIG. 3 shows (a) a plan view, (b) a side view (viewed from AA in FIG. 3), and (c) a cross section of a circuit breaker mounting jig equipped with a human-powered circuit breaker according to an embodiment of the present invention. It is a figure (BB arrow view of FIG. 3) and (d) a sectional view (another form of part C of FIG. 3), and FIG. 4 is a plan view (a) and a side view (b) of FIG. It is a conceptual diagram showing how the breaker fluctuates due to the impact force.

From FIGS. 3A to 3C, the fixing portions 32 are installed at two locations in the front and rear of the breaker main body 21, and the bearing member 321 connected to the mount portion 31 and the breaker 2 for human power are fitted externally. It includes a possible outer fitting member 322, an elastic member 323 interposed between the support member 321 and the outer fitting member 322, and a first connecting member 324 for connecting the support member 321 and the outer fitting member 322. ..
First, the mount portion 31 is composed of a mount 311 made of a steel plate and a connecting material 312 projecting from the lower surface of the mount 311. The connecting material 312 is processed so as to be connectable to the arm 13 according to the model of the backhoe 1. In this embodiment, it is made of two wedge-shaped steel plates and has two connection holes 313 and 313, respectively. The direction of the human-powered circuit breaker 2 can be freely changed by using the pin inserted through the connection holes 313 and 313 as a fulcrum.

Further, from FIGS. ing.
The outer fitting member 322 is composed of two divided bodies that face each other in the vertical direction. After the circuit breaker 2 for human power is externally fitted, the outer fitting member 322 is tightened from the upper and lower end surfaces of the outer fitting member 322 so as to be press-fitted with a plurality of second connecting members 325, 325. The outer fitting member 322 is made of resin (MC nylon), and when tightened with the second connecting member 325, 325 ... Consisting of a long bolt and a nut, the outer fitting member 322 is slightly deformed to exert a fastening force. It is desirable to adjust and process the joint portion between the outer fitting member 322 and the human-powered breaker 2 so as to have a slight gap in advance so as to be possible. In the present embodiment, the outer fitting member 322 is made of resin because of its lightweight performance, strength, and impact resistance, but rubber may be used as long as it is an elastic body, and the material is not limited to the material.

Further, from FIGS. First connecting members 324, 324 ... Consisting of bolts and nuts are inserted to connect the outer fitting member 322 and the bearing member 321. The elastic member 323 is made of a rubber block, but the material is not limited as long as it is an elastic body. The elastic member 323 is mainly shear-deformed to allow the flea 22 of the human-powered circuit breaker 2 to move in the direction perpendicular to the impact (see FIG. 4). It should be noted that even with respect to an excessive pushing force of the backhoe 1 toward the chipping target, the pushing force can be appropriately absorbed by the elastic deformation of the intervening elastic member 323 in the front-rear direction.
Generally, when a worker directly uses the breaker 2 for human power, the flea 22 is operated (ON) by grasping the grip type switch 24 provided on the handle 23. However, in the present embodiment, the human power is used. Since the breaker 2 for use is mounted on the back hoe 1, the grip type switch 24 is not used as the power switch of the breaker 2 for human power, the grip type switch 24 is always fixed in the ON state, and the hose 24 is provided with a solenoid valve (not shown). Therefore, it is possible to operate the back ho body 11 in the driver's seat. Specifically, a switch pedal (not shown) is provided at the feet, and the switch is operated by stepping on it and then releasing it to turn it off. Another worker may operate the compressor or hydraulic unit (not shown) under the signal of the operator, and the present invention is not limited to this embodiment.

Note that FIG. 3D shows another form of the first connecting member 324. Two sets of first connecting members 324 obtained by welding a plurality of connecting members 324b, 324b ... The surface of the support member 321 and the outer fitting member 322 are connected by a plurality of connecting members 324b, 324b, ...

According to the breaker mounting jig of the present embodiment, since the independent drive type breaker 2 is mounted on the arm 13 at the boom tip of the backhoe 1, the backhoe 1 does not have enough hydraulic capacity to mount a dedicated breaker attachment. Even if there is, a general-purpose circuit breaker for human power can be used. Further, a buffer is provided between the mount portion 31 mounted on the arm 13, the breaker fixing portion (outer fitting member 322) on which the independent drive type breaker 2 is mounted, and the mount portion 31 and the breaker fixing portion (outer fitting member 322). By providing the portion (elastic member 323), it is possible to alleviate the impact on the devices of both the backhoe 1 and the independent drive type breaker 2 main body.
Further, according to the breaker mounting jig of the present embodiment, since the fixing portion 32 includes the elastic member 323 interposed between the support member 321 and the outer fitting member 322, the breaker 2 for human power is provided. The elastic member 323 acts as a cushioning material against the impact force such as impact generated when the tip of the flea is scraped and pressed against the object, and the load on the breaker mounting jig 3, the arm 13 of the back hoe 1, and the boom 12 is alleviated. can. That is, by moving the breaker 2 for human power only in the striking direction, the striking force can be concentrated on one point of the striking object, while the chisel 22 is similar to the case where the breaker 2 for human power is operated manually. The tip of the chisel can move slightly in the direction perpendicular to the striking, and the tip of the chisel 22 moves to a position where the strength is low in the striking object whose strength is not uniform, which makes it possible to improve the fishing effect. Therefore, it is possible to move the breaker 2 for human power in the direction perpendicular to the hitting angle, and it is possible to reproduce the hitting performance close to that of the breaker operation by human power. It should be noted that even with respect to an excessive pushing force of the backhoe 1 toward the chipping target, the pushing force can be appropriately absorbed by the elastic deformation of the intervening elastic member 323 in the front-rear direction.
Further, since the fixing portion 32 further includes a first connecting member 324 for connecting the support member 321 and the outer fitting member 322, the impact force such as an impact generated when the flea tip of the breaker is chipped and pressed against the object is affected. On the other hand, the elastic member 323 and the first connecting member 324 can jointly expect a more stable cushioning effect.
Further, since the fixing portions 32 are provided at two or more locations in front of and behind the breaker 2 for human power, the breaker mounting jig is used to alleviate the impact force generated by the chipping work of the breaker 2 for human power. It is possible to effectively restrain the fluctuation of the position of the circuit breaker 2 for human power in No. 3 and realize a stable chipping work with less runout of the chisel 22 tip.
Since the first connecting member 324 that connects the support member 321 fixed to the mount portion 31 and the outer fitting member 322 that grips the breaker 2 for human power is rod-shaped and penetrates through the elastic member 323, the breaker for human power is used. The impact force transmitted to the tip of the chisel 22 of 2 can be immediately transmitted to the elastic member 323 as a cushioning material as a behavior between two points with the outer fitting member 322 as the action point and the bearing member 321 as the fulcrum, which is effective. Allows absorption of impact force. Further, the effect of restraining the excessive deformation of the intervening elastic member 323 by being connected by the rod-shaped first connecting member 324 can be expected.
The outer fitting member 322 is a vertically divided divided body made of an elastic body, and a plurality of second connections arranged so as to penetrate the divided body and press-fit the divided body from the upper and lower end surfaces of the divided body. Since it is composed of the members 325, 325, etc., the steel breaker can be securely held in close contact with the member, so that it can withstand the impact caused by the impact. Further, since the outer fitting member 322 is also an elastic body in addition to the elastic member 323 and the first connecting member 324, the impact force transmitted to the chisel 22 of the human-powered breaker 2 can be absorbed more efficiently.

It should be noted that the configuration or the like described in the above embodiment may be another embodiment in which other components are combined, and the present invention is not limited to the configuration shown here. .. For example, in this embodiment, the support member 321 and the outer fitting member 322 are connected to the first connecting member 324 after the elastic member 323 is interposed (connected to the joined steel plate 324a shown in FIG. 3D). (Including another form using the members 324b, 324b ...), However, the bearing member 321 and the outer fitting member 322 are not connected by the first connecting member 324, but are directly joined and connected to the elastic member 323. Including morphology.
This point can be changed without departing from the spirit of the present invention, and can be appropriately determined according to the application form thereof.

1 Backhoe 11 Backhoe body 12 Boom 13 Arm 14 Bucket 2 Circuit breaker for human power (independent drive type breaker)
21 Breaker body 22 Flea 23 Handle 24 Grip type switch 25 Hose 3 Breaker mounting jig 31 Mount part 311 Mount 312 Connection material 313 Connection hole 32 Fixing part 321 Supporting member 322 External fitting member (breaker fixing part)
323 Elastic member (buffer)
324 First connecting member 324a Joined steel plate 324b Connecting member 325 Second connecting member

Claims (6)

It is a breaker mounting jig that attaches an independent drive type breaker to the arm at the tip of the boom of the backhoe.
The mount part to be attached to the arm and
The breaker fixing part for mounting the breaker and
A cushioning portion between the mount portion and the breaker fixing portion,
A breaker mounting jig that is characterized by being equipped with. A breaker mounting jig for mounting a human-powered breaker on the arm from which the backhoe bucket, which is formed by mounting a bucket on the tip of the boom via an arm, is removed.
A mount that is detachably connected to the arm,
It consists of a fixing part that fixes the breaker to the mount part, and
The fixing portion includes a bearing member connected to the mount portion and a bearing member.
With an outer fitting member into which the breaker can be fitted,
An elastic member interposed between the bearing member and the outer fitting member, and
A breaker mounting jig characterized by being equipped with. The breaker mounting jig according to claim 2, wherein the fixing portion further includes a first connecting member that connects the support member and the outer fitting member. The breaker mounting jig according to claim 2 or 3, wherein the fixing portions are provided at two or more locations before and after the breaker. The breaker mounting jig according to claim 2, wherein the first connecting member is made of a bar and is penetrated through the elastic member. The outer fitting member is a vertically divided divided body made of an elastic body, and a plurality of second connections arranged so as to penetrate the divided body and press-fit the divided body from the upper and lower end surfaces of the divided body. The breaker mounting jig according to any one of claims 2 to 5, wherein the member is composed of a member.

Images