KR101910986B1 - Breaker Having Intermediate Transfer Unit - Google Patents

Abstract

The present invention relates to a breaker for crushing a striking object, comprising: a cylinder provided with a piston capable of reciprocating by a separate drive pump; a piston provided at a lower portion of the cylinder and penetrating along a vertical direction, And a lower portion of the striking unit which charges the striking object and a lower portion of the striking unit which is disposed at a lower portion of the piston in the lower portion of the striking space, And an intermediate transfer unit disposed between the striking unit and a lower portion of the striking unit, wherein the lower portion contacts the upper side of the chisel and transmits a force generated by the price of the piston to the striking unit .

Description

[0002] Breaker Having Intermediate Transfer Unit having an intermediate transfer unit [0003]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a breaker having an intermediate transfer unit, and more particularly, to a breaker having an intermediate transfer unit capable of preventing an impact from being transmitted to a piston due to a repulsive force generated when the object is hit with a chisel will be.

Generally, a breaker mounted on an excavator is mounted on a front head of a hitting piston mounted inside the main body, and hits the chisel to crush an object to be hit such as a rock.

A conventional structure of such a breaker includes a cylinder constituting a body, a piston provided so as to be vertically reciprocable within the cylinder, a housing connected to a lower portion of the cylinder and provided with a hitting chamber to which the piston is hammered, And a chisel disposed in the housing so as to be positioned in the chamber and breaking the object to be struck

The chisel is configured to transfer the kinetic energy of the piston to the impact object by changing the impact energy.

The piston moves downward from the position of the top dead center, which is the maximum rising position, to the position of the bottom dead center, which is the maximum striking position. When the lower end of the piston hits the top of the chisel, the chisel transmits the impact energy, .

In this case, when the piston is moved from the raised position to the striking position, the piston can not hit the chisel and directly hits the inner wall of the cylinder or the housing, Excessive stress and impact are generated in the cylinder.

This phenomenon is called no-load strikes or idle blow. If the worker does not stop the operation of the breaker after the object to be crushed is crushed, the crane is continuously operated in the open state.

Generally, the worker is aware that the destruction of the object of crushing is completely finished, and the occurrence of the crushing occurs during the time it takes to stop the operation of the breaker.

When such a rattling occurs, the impact is transmitted to the housing or the internal assembling parts, thereby deteriorating the service life of the breaker.

On the other hand, when the impact object is crushed using the force applied to the piston by the chisel, a repulsive force is generated in the direction in which the piston strikes the chisel from the impact object until the crushing of the object is completed.

This repulsive force causes the chisel to rise and strike the piston and the inside of the housing. Particularly, vibration and noise are further increased due to collision between the hitting force of the piston and the repulsion force of the hitting object, so that the durability of the breaker is remarkably lowered.

Therefore, a method for solving such problems is required.

SUMMARY OF THE INVENTION The present invention has been conceived to solve the above problems of the prior art, and it is an object of the present invention to provide a hermetic compressor which has a separate intermediate transfer unit between a piston moving up and down and a hitting unit hitting a hitting object, To prevent breakage of the piston by preventing the breaker from being transmitted to the piston.

The problems of the present invention are not limited to the above-mentioned problems, and other problems not mentioned can be clearly understood by those skilled in the art from the following description.

In order to achieve the above object, a breaker having an intermediate transfer unit according to the present invention includes a cylinder provided with a piston capable of reciprocating motion by a separate drive pump, a cylinder provided below the cylinder, A piston which is formed in the housing and in which the piston is lowered to be inserted into the striking space, a striking unit disposed at a lower portion of the piston inside the housing, the striking unit having a lower side for charging the striking object, And an intermediate transfer unit disposed between the lower portion and the striking unit, the lower portion contacting the upper side of the chisel and transmitting a force generated by the price of the piston to the striking unit.

The housing may include an upper bush provided at least on a side of the inner side and disposed on the upper side of the intermediate striking part to form the striking space.

In addition, the striking unit may be formed in a long shape, and an upper end portion may be disposed at a lower portion of the upper bushing to seal the striking space, a lower portion of which may be provided with a chisel for vertically bending the striking object, And a lower bush which surrounds and supports the upper circumference of the chisel.

The intermediate transfer unit may further include a first elastic member provided between the intermediate transfer unit and the upper bush and elastically supporting the second intermediate member, and a second elastic member provided between the lower intermediate bush and the lower bush to elastically support the intermediate transfer unit.

In addition, the first elastic member may be formed to have a rigidity larger than that of the second elastic member.

In addition, at least one of the first elastic member and the second elastic member may be formed by being spaced apart from each other in the circumferential direction of the intermediate transfer unit.

In addition, the intermediate transfer unit may be formed such that a lower surface thereof is recessed, and an upper end of the chisel is disposed inside the lower bush.

In addition, the housing may include an inner diameter reducing portion that has a relatively small inner diameter at a lower portion of the hitting space.

Also, at least a part of the upper surface of the intermediate transfer unit may be protruded upward to be inserted into the hitting space to seal the hitting space.

The apparatus may further include a vacuum control unit that communicates with the hitting space and adjusts the inside of the hitting space to a vacuum atmosphere to reduce noises during hitting the piston.

The breaker having the intermediate transfer unit of the present invention for solving the above-mentioned problems has the following effects.

First, a separate intermediate transfer unit is provided between a piston that moves up and down in the housing and a chisel that hits the striking object, so that the blow by the piston is transmitted to the chisel through the intermediate transfer unit, There is an effect that the repulsive force of the chisel can be prevented from being transmitted to the piston.

Second, since the striking space inside the housing is closed and a vacuum atmosphere is formed, there is an advantage that the noise generated when the piston hits the intermediate transfer unit can be reduced.

The effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned can be clearly understood by those skilled in the art from the description of the claims.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view of the outline of a breaker according to the present invention; FIG.
2 is an exploded perspective view schematically showing a concrete structure of a breaker according to the present invention;
Figure 3 schematically illustrates the internal construction of the breaker of Figure 1; And
Fig. 4 is a view showing a state in which the piston hits the striking unit in the breaker of Fig. 1

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. In describing the present embodiment, the same designations and the same reference numerals are used for the same components, and further description thereof will be omitted.

First, the breaker according to the present invention is an apparatus for crushing or machining a striking object by striking an upper side of the striking unit that contacts the striking object through a piston that moves up and down with hydraulic pressure or pneumatic pressure.

A breaker according to an embodiment of the present invention will be described with reference to FIGS. 1 to 4. FIG.

FIG. 1 is a schematic view showing the outline of a breaker according to the present invention, and FIG. 2 is an exploded perspective view schematically showing a concrete structure of a breaker according to the present invention.

FIG. 3 is a schematic view showing the internal construction of the breaker of FIG. 1, and FIG. 4 is a view illustrating a state where the piston strikes the striking unit in the breaker of FIG.

Referring to the drawings, a breaker according to the present invention mainly includes a cylinder 100, a housing 200, a striking unit 400, and an intermediate transfer unit 300.

The cylinder 100 is formed to have a long length and a piston 110 is provided therein to selectively move up and down.

Here, the cylinder 100 is connected to a separate drive pump so that the piston 110 moves up and down by hydraulic pressure.

In the present invention, the drive pump may be composed of a high-pressure pump and a low-pressure pump, thereby moving the piston 110 up and down. In addition, in the case of the low-pressure pump, it may be used to create a vacuum atmosphere inside the striking space 210 described later.

Meanwhile, the housing 200 is provided at a lower portion of the cylinder 100, and at least a part of the intermediate transfer unit 300 described later can be received therein.

Specifically, the housing 200 is formed to pass through the lower portion of the cylinder 100 so that a part of the piston 200 can be introduced into the interior of the piston 100 when the piston 110 is lowered. Is inserted.

The piston (110) supports the intermediate transfer unit (300) inside the housing (200).

The intermediate transfer unit 300 is disposed between the housing 200 and the striking unit 400 to transmit the striking force of the piston 110 to the striking unit 400, Prevent the penetration of the inside of the impact space 210 or the pricing of the housing 200 due to the repulsive force.

The configuration of the intermediate transfer unit 300 will be described later in detail.

In this embodiment, the housing 200 is formed in the shape of a quadrangular prism, and upper and lower portions thereof are formed to pass through and a striking space 210 is provided therein. The intermediate transfer unit 300 may be disposed below the hitting space 210 so that the piston 110 may strike the intermediate transfer unit 300 within the hitting space 210.

Here, the housing 200 is fixedly coupled to the cylinder 100 with the upper portion thereof opened, and a separate sealing member 220 is provided in a region coupled with the cylinder 100 when the cylinder 200 is engaged with the cylinder 100, 210) to be sealed

In addition, the housing 200 includes a separate inner diameter reduction portion 240 at a lower portion along the longitudinal direction.

The inner diameter reducing portion 240 is formed to have a relatively small inner diameter on the inner surface of the lower portion of the housing 200 so as to limit a downward length of the piston 110.

As shown in the figure, at least a portion of the inner diameter reducing portion 240 protrudes along the inner diameter of the hitting space 210, and the lower portion of the inner diameter reducing portion 240 is relatively smaller than the outer diameter of the piston 110.

An upper portion of the intermediate transfer unit 300 to be described later is inserted through the inner diameter reduction portion 240 at an opened lower portion of the housing 200 and the upper side of the striking unit 400 is inserted into the piston 110) descend and strike.

When the striking object (not shown) strikes the striking object (not shown) by the striking unit 400, the inner diameter reducing unit 240 applies an impact to the intermediate transmitting unit 300 due to the repulsive force, To prevent the penetration of a part of the hitting space (210) into the hitting space (210).

That is, the upper end of the intermediate transfer unit 300 is prevented from moving upward by the inner diameter reducing unit 240, so that the housing 200 is broken due to the repulsive force, Can be minimized.

In the present embodiment, the hitting space 210 is formed by the housing 200. Alternatively, a separate upper bush 230 (see FIG. 2) may be formed to surround the hitting space 210 on the inner side of a part of the upper and lower portions, ) May be further provided.

The upper bush 230 is coupled to a lower portion of the cylinder 100 in the housing 200 and a striking space 210 is formed therein.

Specifically, the upper bush 230 is formed as a separate member from the housing 200 and has a shape vertically passing through the upper bush 230. The upper bush 230 is disposed in a part of the inside of the housing 200.

Here, the upper bush 230 is fixedly coupled to the cylinder 100 with the upper portion thereof being opened, and a separate sealing member 220 is provided in a region where the upper bush 230 is coupled when the cylinder 100 is engaged with the cylinder 100, So that the space 210 can be sealed

At this time, it is preferable that the upper bush 230 is made of a material resistant to thermal deformation by a separate member from the housing 200, thereby reducing the noise generated in the hitting space 210.

In the present embodiment, the upper bush 230 has a ring shape passing through upper and lower portions as shown in the figure, and includes the inner diameter reducing portion 240 at a lower portion thereof.

That is, in the present invention, the housing 200 may include the upper bush 230 or may not include the upper bush 230 and may include the upper bush 230 at all times The inner diameter reduction portion 240 is protruded from the inner surface of the upper bush 230.

The upper bushing 230 is formed to form the hitting space 210 inside the hitting space 210 so that the piston 110 can hit the intermediate transfer unit 300 .

Meanwhile, the striking unit 400 is formed at a lower portion of the intermediate transfer unit 300 and is received by the intermediate transfer unit 300 to receive the striking object by the piston 110, do.

Specifically, the striking unit 400 is disposed on the lower side of the intermediate transfer unit 300, and receives the impact from the intermediate transfer unit 300 to strike the striking object.

Here, the striking unit 400 mainly includes a chisel 420 and a lower bush 410.

The chisel 420 is elongated and has an upper end disposed at a lower portion of the intermediate transfer unit 300 to receive an impact from the intermediate transfer unit 300 and a lower end configured to receive the impact object .

As shown in the drawing, the chisel 420 is formed of a general high rigidity material and directly charges the striking object. The upper part of the chisel 420 is disposed at a lower portion of the intermediate transfer unit 300.

Accordingly, the chisel 420 receives the impact generated from the piston 110 through the intermediate transfer unit 300 and charges the impact object.

The lower bush 410 is disposed at a lower portion of the intermediate transfer unit 300 in a vertically penetrating shape and surrounds and supports the upper region of the chisel 420.

Specifically, the lower bush 410 is formed in the inside of the housing 200 in a pipe shape so that the chisel 420 is penetrated and supported.

Here, the lower bush 410 may be formed of a separate member from the housing 200, and may be formed of a material having high heat resistance and wear resistance.

Thus, the striking unit 400 is disposed below the intermediate transfer unit 300 and charges the striking object using the impact transmitted from the intermediate transfer unit 300.

The intermediate transfer unit 300 is disposed between the lower portion of the hitting space 210 and the striking unit 400 to be described later and the lower portion thereof contacts the upper side of the chisel 420, ) To the striking unit (400).

Specifically, the intermediate transfer unit 300 is configured to seal the hitting space 210 between the hitting space 210 and the hitting unit 400.

At this time, a part of the upper surface of the intermediate transfer unit 300 protrudes upward and is inserted into the upper bush 230 with a circumference corresponding to the circumference of the inner diameter reducing unit 240.

Accordingly, a part of the intermediate transfer unit 300 is inserted into the hitting space 210 to seal the hitting space 210.

When the piston 110 strikes the striking unit 400, the intermediate transfer unit 300 transmits the impact received to the striking unit 400 disposed at the lower portion of the striking unit 400, To be priced.

That is, the intermediate transfer unit 300 is disposed between the upper bush 230 and the lower bush 410, and is configured to have a circumference corresponding to the circumference of the upper bush 230 and the lower bush 410.

The lower bush 410 is disposed below the intermediate transfer unit 300 and the upper end of the chisel 420 penetrates through the lower bush 410 to a lower portion of the intermediate transfer unit 300 The contact state is established.

Here, when the piston 110 hits the intermediate transfer unit 300, an impact is transmitted to the chisel 420, so that the chisel 420 can strike the hitting object.

In the present embodiment, at least a part of the upper surface of the intermediate transfer unit 300 is protruded, and the lower portion of the intermediate transfer unit 300 is recessed to insert the upper end of the chisel 420.

That is, at least a part of the lower surface of the intermediate transfer unit 300 is recessed, and the upper end of the chisel 420 is disposed inside the lower bush 410.

This allows the impact applied to the intermediate transfer unit 300 to be evenly transmitted to the chisel 420.

The intermediate transfer unit 300 is disposed between the piston 110 and the chisel 420 and transmits an impact generated when the piston 110 is hit to the chisel 420, So that the inside of the body 210 can be sealed.

In addition, the intermediate transfer unit 300 is provided with a separate sealing ring 330 along the periphery of the outer side surface that contacts the inner side surface of the housing 200.

Specifically, the intermediate transfer unit 300 is disposed inside the housing 200, and is in contact with the upper bush 230 disposed at the upper portion to close the hitting space 210.

However, as soon as the piston 110 hits the intermediate transfer unit 300, the intermediate transfer unit 300 may be moved downward to cause a gap with the hitting space 210.

Accordingly, the sealing ring 330 can block the movement of air along the circumference of the intermediate transfer unit 300, thereby preventing air from being introduced into the hitting space 210.

Of course, even if the sealing ring 330 is provided, air may be introduced into the inside of the striking space 210, so that the air inside the striking space 210 is continuously discharged from the vacuum adjusting unit 500 desirable.

As described above, the intermediate transfer unit 300 is provided to close the inside of the hitting space 210, and at the same time, transmits the impact to the chisel 420, thereby reducing noise generated while hitting the hitting object .

The intermediate transfer unit 300 according to the present invention includes a first elastic member 310 disposed between the upper bush 230 and the second elastic member 310 along a vertical direction and a second elastic member 310 disposed between the lower bush 410 and the second elastic member 310, The elastic member 320 is provided to cushion the impact.

Specifically, the first elastic member 310 and the second elastic member 320 are provided at upper and lower portions of the intermediate transfer unit 300 to support the intermediate transfer unit 300 and absorb shock.

At this time, the first elastic member 310 is formed to have a greater rigidity than that of the second elastic member 320. In this embodiment, the first elastic member 310 is formed of a disc spring, 2 The elastic member 320 is composed of a coil spring.

Since the first elastic member 310 has a relatively rigid structure, the chisel 420 pushes up the intermediate transfer unit 300 upward due to the repulsive force of the impact object at the price of the impact object, In order to prevent them from colliding with each other.

The first elastic member 310 and the second elastic member 320 are configured to support the intermediate transfer unit 300 by means of springs having different shapes. However, the first and second elastic members 310 and 320 may be made of different materials It is possible.

At least one of the first elastic member 310 and the second elastic member 320 may be spaced apart from each other in the circumferential direction of the intermediate transfer unit 300.

The first elastic member 310 and the second elastic member 320 may be respectively disposed on the upper and lower surfaces of the intermediate transfer unit 300 such that the first elastic member 310 and the second elastic member 320 are spaced apart from each other along the circumferential direction of the intermediate transfer unit 300, Respectively.

The intermediate transfer unit 300 is configured to maintain the sealing of the hitting space 210 and to prevent the piston 110 (110) from hitting the upper part of the hitting space 210 due to the repulsive force generated by the hitting of the hitting object Can be prevented.

When the piston 110 descends in a state in which the chisel 420 descends due to its own weight after the impact object is completely crushed, the piston 110 can not strike the chisel 420, 100 or the inner wall of the housing 200 to exert excessive stress and impact on the piston 110 and the cylinder 100.

This phenomenon is called no-load strikes or idle blow.

However, since the upper part of the intermediate transfer unit 300 is disposed inside the hitting space 210 as in the present invention, the piston 110 can charge the intermediate transfer unit 300, Can be prevented.

In addition, the intermediate transfer unit 300 prevents the piston 110 from being impacted by interrupting the intermediate transfer unit 300 even if the chisel 420 bounces due to a repulsive force generated by hitting the hitting object .

That is, the intermediate transfer unit 300 hermetically encloses the inside of the hitting space 210 to prevent the piston 110 from being actuated, and at the same time, the piston 110 is damaged due to the reaction of the chisel 420 .

As described above, the breaker according to the present invention includes the intermediate transfer unit 300 together with the cylinder 100 and the housing 200, and prevents breakage of the piston 110 while minimizing damage thereof .

Meanwhile, the breaker according to the present invention further includes a vacuum control unit 500 for controlling the vacuum inside the hitting space 210.

The vacuum control unit 500 communicates with the hitting space 210 and adjusts the inside of the hitting space 210 to a vacuum atmosphere to reduce noise generated when the piston 110 is hit.

Specifically, the vacuum regulating unit 500 is constituted by a general vacuum pump, and air inside the hitting space 210 is discharged to the outside to create a vacuum atmosphere.

At this time, the upper part of the striking space 210 disposed inside the housing 200 is closed by the cylinder 100, and the lower part is closed by the intermediate transfer unit 300, .

Generally, in the vacuum state, when the noise is generated, the air as the transmission medium is reduced, and the transmission is not smooth.

Accordingly, the piston 110 strikes the intermediate transfer unit 300 inside the striking space 210, and when the striking space 210 becomes a vacuum atmosphere, the noise generated during striking can be remarkably reduced have.

That is, since the upper end of the chisel 420 is disposed inside the striking space 210, and the piston 110 is struck inside the striking space 210, a noise source is disposed in a closed space in a vacuum state to reduce noise transmitted to the outside .

In this embodiment, the vacuum regulating unit 500 is formed as a separate vacuum pump. Alternatively, the vacuum regulating unit 500 may be connected to the driving pump to adjust the vacuum in the hitting space 210, Pressure pump of the driving pump for discharging the air inside the hitting space 210 to the outside.

As described above, the breaker according to the present invention includes the cylinder 100, the housing 200, the intermediate transfer unit 300, the striking unit 400, and the vacuum adjusting unit 500, 210 can be adjusted to a vacuum state and noise generated by the piston 110 charging the intermediate transfer unit 300 within the hitting space 210 can be reduced.

It will be apparent to those skilled in the art that the present invention can be embodied in other specific forms without departing from the spirit or scope of the invention as defined in the appended claims. It is obvious to them. Therefore, the above-described embodiments are to be considered as illustrative rather than restrictive, and the present invention is not limited to the above description, but may be modified within the scope of the appended claims and equivalents thereof.

100: Cylinder
110: Piston
200: Housing
210: Hitting space
300: intermediate transfer unit
310: first elastic member
320: second elastic member
400: Striking unit
410: Lower bush
420: Chisel
500: Vacuum control unit

Claims (8)

A cylinder having a piston reciprocally movable by a separate drive pump;
A housing provided at a lower portion of the cylinder and penetrating along the vertical direction and having a striking space formed therein, the piston being lowered to be inserted into the striking space;
A striking unit which is formed long and is disposed at a lower portion of the piston inside the housing, the striking unit of which the lower side charges the striking object; And
An intermediate transfer unit disposed between the lower portion of the striking space and the striking unit and having a lower portion in contact with the upper side of the chisel and transmitting a force generated by the price of the piston to the striking unit; / RTI >
Wherein the housing comprises at least a portion of a side surface inside and an upper bush disposed at an upper portion of the intermediate transfer unit to form the hitting space,
Wherein the striking unit is elongated and has an upper end disposed at a lower portion of the upper bush to seal the striking space and a lower portion disposed at a lower portion of the upper bush with a chisel for vertically penetrating the striking object, And a lower bush which surrounds and supports the upper periphery of the lower bush,
Wherein the intermediate transfer unit further comprises a first elastic member provided between the intermediate transfer unit and the upper bush and elastically supporting the first bush, and a second elastic member provided between the lower intermediate bush and the lower bush and elastically supporting the intermediate transfer unit, delete delete delete The method according to claim 1,
The first elastic member
Wherein the second elastic member is relatively stiff and has a larger rigidity than the second elastic member. The method according to claim 1,
Wherein at least one of the first elastic member and the second elastic member is formed by being spaced apart from each other in the circumferential direction of the intermediate transfer unit. The method according to claim 1,
The intermediate transfer unit includes:
At least a part of the upper surface protruding upward to be inserted into the inside of the striking space to seal the striking space. The method according to claim 1,
Further comprising a vacuum control unit communicating with the striking space and adjusting the inside of the striking space to a vacuum atmosphere to reduce noises when hitting the piston.

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