KR200429663Y1 - A Chisel of Breaker - Google Patents

Abstract

According to an aspect of the present invention, there is provided a front head having a chisel installed therein, a hole penetrating horizontally through the front and rear surfaces of the front head, and a chisel pin inserted into the hole to guide the movement of the chisel. The front and rear are coupled to each other to prevent the separation of the chisel pin inserted into the hole, the release prevention member is formed on both sides of the flat head and the front head portion covering the hole, and the flat plate is formed on both sides of the front head It proposes a breaker chisel departure prevention member, characterized in that consisting of the bent portion bolted to the protrusion of the side plate attached.

Breaker, Cylinder, Piston, Chisel, Chisel Pin, Breakaway

Description

Breaker Chisel Pin Breaker {A Chisel of Breaker}

1 is a view showing a conventional general breaker.

Figure 2 is an exploded view showing the overall configuration of a breaker according to a preferred embodiment of the present invention.

3 is a view showing an extract of the departure prevention bar shown in FIG.

FIG. 4 is a view illustrating an assembly structure of the breaker shown in FIG. 2;

<Description of the symbols for the main parts of the drawings>

10: cylinder 12: chisel

14: front head 18: side plate

18a: protrusion 22: hole

24: chisel pin 26: cushion member

28: departure stop 30: flat plate

32: bend

The present invention relates to a breaker chisel pin release prevention, more specifically, to prevent the separation of the chisel pin inserted into the hole by closing the hole formed in the front, rear of the front head as a departure prevention, and to the chisel pin A breaker chisel pin release preventer which prevents the release protector from being damaged by an applied impact.

As is well known, a breaker refers to a working machine in which one end of a piston hits a chisel while the piston, which receives a pressure source such as pneumatic or hydraulic pressure, reciprocates inside the cylinder, and the hitted chisel strikes and breaks the debris.

The attached Figure 1 shows the general structure of a conventional breaker.

As shown, the breaker is a cylinder 110 in which the piston 112 is built, the front head 114 installed below the cylinder 110, the front head 114 is installed inside the piston 112 It consists of a chisel 116 to crush the debris by hitting.

The front and rear of the front head 114 is formed with two holes penetrating horizontally, the chisel pin 120 is inserted into the hole. The chisel pin 120 inserted into the hole passes through the guide grooves 116a formed at both sides of the chisel 116.

On the other hand, the chisel pin 120 inserted into the hole is fastened in a state where the bolt 122 penetrates, and through the bolt 122, the chisel pin 120 is fixed without being separated from the hole of the front head 114. It can keep the state.

However, when the chisel 116 is lowered to hit the debris, the chisel pin 120 is strongly buried in the upper end of the guide groove 116a of the chisel 116, the chisel pin 120 by the impact generated As the bolt 122 penetrates through, the chisel pin 120 is often separated from the front head 114 to the outside.

In addition, when an impact is transmitted to the bolt 122, a crack is generated at the fastening portion of the front head 114 to which the bolt 122 is fastened, thereby causing a problem such as shortening the life of the device.

Therefore, the technical problem to be achieved by the present invention is to seal the holes formed in the front and rear of the front head with a separation prevention to prevent the separation of the chisel pin inserted into the hole, the damage of the escape guard by the impact applied to the chisel pin. It is to provide a breaker chisel pin escape guard to prevent.

Another technical problem to be achieved by the present invention is to provide a breaker chisel pin escape guard to prevent the chisel pin inserted into the hole to flow.

Another technical problem to be achieved by the present invention is to provide a breaker chisel pin escape guard that can quickly perform the replacement operation of the chisel pin inserted into the hole.

In order to solve the above technical problem, the present invention includes a front head with a chisel, a hole penetrating horizontally through the front and rear of the front head, and a chisel pin inserted into the hole to guide the movement of the chisel. In the breaker, the front and rear of the front head is coupled to the separation prevention to prevent the separation of the chisel pin inserted into the hole, respectively, the release prevention portion is a flat plate that covers the hole and the both sides of the flat plate The breaker is provided to breaker chisel departure prevention characterized in that consisting of the bent portion is bolted and the protrusion of the side plate attached to both sides of the front head.

Before and after the chisel pin, it is preferable to install a cushion member to prevent the flow of the chisel pin.

Preferably, the flat plate portion is provided with a tool insertion hole in communication with the hole.

Hereinafter, with reference to the accompanying drawings will be described a preferred embodiment of the present invention.

2 to 4 is a view showing the overall configuration of the breaker chisel departure prevention to be implemented in the present invention.

As shown, the breaker 100 is a cylinder 10, the piston 12 is built, and the front head 14 is installed in the lower end of the cylinder 10, the chisel 16, which is built into the impact means therein It consists of. When the breaker 100 having the above-described configuration is supplied with a hydraulic pressure or a pneumatic pressure source into the cylinder 10, the piston 12 moves downward and strikes the chisel 16 embedded in the front head 14. Accordingly, the chisel 16 performs an operation of crushing the crushed material.

Brackets 20 are attached to both sides of the breaker 100 composed of the cylinder 10 and the front head 14. The bracket 20 is to fix the breaker 100 to equipment such as excavators.

The side plate 18 is fitted between the front head 14 and the bracket 20. At this time, the front and rear of the side plate 18 is provided with a projection (18a) protruding from the front head 14, the projection (18a) is a surface of the bent portion 32 of the separation prevention 28 to be described later Contact and fasten with bolts 34.

Two holes 22 penetrating horizontally are formed in front and rear surfaces of the front head 14, and chisel pins 24 are inserted into the holes 22, respectively. The chisel pin 24 inserted into the hole 22 is inserted into the guide grooves 16a formed on both sides of the chisel 16 so that the guide grooves 16a move along the up and down movement of the chisel 16. Hanging on the upper and lower ends, limit the moving distance of the chisel 16, and also guides the movement of the chisel (16).

On the other hand, the front and rear of the front 14 is attached to the departure stop 28 corresponding to the main configuration of the present invention, respectively.

As shown in FIG. 3, the release preventing member 28 seals the holes 22 formed in the front and rear surfaces of the front head 14, and the chisel pins 24 inserted into the holes 22. ) Is a means to prevent the departure of the outside. That is, the present invention does not prevent the separation of the chisel pin 24 through separate bolting as in the prior art, but seals the hole 22 into which the chisel pin 24 is inserted, thereby leaving the chisel pin 24. Therefore, even if a strong impact is applied to the chisel pin 24, the departure prevention member 28 can prevent the separation of the chisel pin 24 without being affected. On the other hand, the departure prevention bar 28 is manufactured in the same shape, in the following will be described on behalf of the structure of one departure prevention bar 28.

The departure preventing member 28 as a whole having a "c" cross-sectional shape is composed of a flat plate portion 30 and the bent portion 32 is formed to be bent vertically on both sides of the flat plate portion 30, respectively.

The flat plate part 30 covers the holes 22 formed in the front and rear surfaces of the front head 14 to seal the holes 22. The flat plate portion 30 is preferably manufactured to have the same width as the front and rear surfaces of the front head, and to be made larger than the diameter of the hole 22.

The flat plate portion 30 is further provided with a tool insertion hole 30a communicating with the hole 22, respectively. The tool insertion hole 30a inserts a tool (not shown) into the tool insertion hole 30a during the replacement operation of the chisel pin 24 to push the chisel pin 24 out of the hole 22 to the outside. It is a hole formed to pull out.

The operation of replacing the chisel pin 24 using the tool insertion hole 30a proceeds as follows. First, one release guard 28 is removed from the front head 14 to open the hole 22, and then the tool insertion hole 30a of the other release guard 28 attached to the front head 14 is opened. When the tool is inserted into the tool, the chisel pin 24 inserted into the hole 22 is pushed out of the hole 22, and thus the chisel pin (2) does not need to be separated. 24 can be easily removed from the hole 22.

The bent portion 32 is fastened with bolts 34 in surface contact with the protrusions 18a of the side plates 18 attached to both side surfaces of the front head 14, and the release preventing portion 28 is attached to the front head. It is fixed to (14).

On the other hand, the cushion member 26 is further provided before and behind the chisel pin 24 inserted into the hole 22 of the front head 14, respectively. As shown in FIG. 4, the cushion member 26 is provided with the flat plate 30 and the teeth of the release preventing member 28 after the release preventing member 28 is attached to the front and rear surfaces of the front head 14. It is to prevent the flow of the chisel pin 24 in the state sandwiched between the pins 24, respectively.

Hereinafter, the operation of the breaker chisel pin departure prevention device according to the present invention.

First, the assembly of the separation prevention device 28 of the present invention inserts the chisel pin 24 into the hole 22 formed in the front, rear of the front head 14, and then prevent the separation of the hole 22 After covering with the flat plate part 30 of the base 28, the protrusion part of the side plate 18 to which the bent part 32 bend | folded at both sides of the said flat part 30 is attached to both sides of the front head 14 is carried out. When the bolts 34 are fastened in the state of being in surface contact with the 18a, the release preventing member 28 is attached to the front and rear of the front head 14 with the holes 22 sealed, and thus the holes 22 The chisel pin 24 inserted in the) is kept in the inserted state without being separated to the outside by the separation prevention 28.

As described above, the use of the breaker 100 to which the release preventing body 28 is attached causes the chisel 16 installed in the front head 14 to operate the piston 12 installed in the cylinder 10. After descending on the piston 12, the crushed object is hit. At this time, the chisel pin 24 inserted into the hole 22 of the front head 14 is impacted while being hit by the upper end of the guide groove 16a of the chisel 16 as the chisel 16 descends. In this case, as the departure prevention member 28 is attached to the front and rear of the front head 14 as mentioned, even if a strong impact is applied to the chisel pin 24, the departure prevention member 28 has a different effect. It is possible to prevent the breakage of the departure stop 28 is not received.

As described above, the present invention prevents the chisel pins from being separated during use by sealing the holes formed in the front and rear of the front head with the release preventing device, and breaks the escape guard even if an impact is applied to the chisel pins. It has the effect of being prevented.

In addition, the cushion member inserted into the front and rear of the chisel pin to prevent the flow of the chisel pin has an effect that can easily guide the operation of the chisel.

In addition, when the chisel pin is replaced by the tool insertion hole formed in the release preventing member, the chisel pin inserted into the hole of the front head may be easily removed even without removing all the release preventing members.

Claims (3)

A front head 14 having a chisel 16 installed therein, a hole 22 horizontally penetrating the front and rear surfaces of the front head 14, and inserted into the hole 22 to move the chisel 16. In the breaker comprising a chisel pin 24 to guide, Before and after the front head (14) is coupled to the escape guard (28) for preventing the separation of the chisel pin 24 inserted into the hole (22); The separation prevention 28 includes a flat plate portion 30 covering the hole 22; It is formed on both sides of the plate portion 30 is bent and the protrusions 18a of the side plate 18 attached to both sides of the front head 14 and the bent portion 32 is fastened to the bolt 34 Breaker Chisel Breakaway. The method of claim 1, Breaker chisel breakaway, characterized in that the front and rear of the chisel pin 24, the cushion member 26 is installed to prevent the flow of the chisel pin 24. The method according to claim 1 or 2, Breaker chisel departure prevention means, characterized in that the flat plate 30 is formed with a tool insertion hole (30a) in communication with the hole (22).

Images