KR101820576B1

KR101820576B1 - Crusher

Info

Publication number: KR101820576B1
Application number: KR1020150149431A
Authority: KR
Inventors: 박내열
Original assignee: 박내열
Priority date: 2015-10-27
Filing date: 2015-10-27
Publication date: 2018-03-08
Also published as: KR20170048834A

Abstract

The first and second wing brackets 15 and 16 are coupled to a boom (not shown) of a heavy equipment. The first and second wing brackets 15 and 16 A bracket main body 10 configured; A grip body 20 having a pair of shredding jaws J1 and J2 and hydraulic cylinders S1 and S2 provided with a second joint hole 21 corresponding to the first joint hole 11; A joint bolt 30 composed of a head 31 which is hooked on the pliers main body 20 and a bolt body 32 passing through the first and second joint holes 11 and 21; The nut member 41 is fastened to the bolt body 32 passing through the first and second joint holes 11 and 21 in the bracket body 10 and has a nut portion 41 screwed to the bolt body 32 on the inner circumferential surface thereof , An annular joint wheel (40) having a gear (42) on an outer peripheral surface thereof; The worm 52 is formed on the outer peripheral surface of the worm shaft 51 rotatably supported on the first and second wing brackets 15 and 16 and is screwed to the gear 42 of the joint wheel 40, And a wrench end (53) projecting outwardly of the worm gear (16); A clutch 70 installed in the second wing bracket 16 for preventing the worm gear 50 from rotating in one direction and rotating in the opposite direction; And a clutch fixing cover (80) for fixing the clutch (70) to the second wing bracket (16) and preventing the clutch (70) from being exposed to the external environment.

Description

{Crusher}

The present invention relates to a crusher for crushing structures such as concrete for demolishing a building, and more particularly, to provide a crusher that facilitates maintenance and easy maintenance.

In general, Crasher is used to connect heavy equipment such as excavators and cranes, and is used to crush structures such as concrete when demolishing concrete structures.

The crusher basically includes a bracket body coupled to the heavy equipment boom, a pliers body rotatably assembled to the bracket body and operated by hydraulic pressure, A joint bolt and a joint wheel, and a worm gear mounted on the bracket body for rotating the joint wheel. In such a crusher, after the joint wheel is fastened to the joint bolt passing through the main body and the bracket body, the worm gear is rotated so that the joint wheel is fastened to the joint bolt. A related art related to this is disclosed in U.S. Utility Model Publication No. 20-2015-0000840 under the name Krusha.

However, in the process of demolishing the building, a large impact is applied to the main body of the pliers, so that the piercing tie wheel loosens in the joint bolt. In this case, the force of adhesion between the main body and the main body is weakened, In undesirable situations, a movement such as rotation occurred. That is, the impact applied to the pawl body applies a force that causes the joint wheel to rotate relative to the joint bolt, and this force causes the worm gear to be rotated finely, so that the joint wheel loosens in the joint bolt over time.

Also, in order to break the concrete structure at a certain angle, it is necessary to rotate the pawl body having the breaking tongs at a predetermined angle with respect to the bracket body, in order to do this, the deflected point of the pawl body is intentionally collided with the building. In this process, too, the joint wheel is loosened from the joint bolt, so that the adhesion force between the main body and the bracket body is weakened, and the main body is rotated in an undesired state.

In this case, the operator separates the crusher from the boom, then rotates the worm gear with a separate tool, and tightens the joint bolt with the joint wheel so that the clamp bracket is tightly fixed to the bracket body. However, since the pawl body has a weight of several hundred Kg, the process of tightening the joint wheel to the joint bolt supporting the heavy object was very difficult.

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems, and it is an object of the present invention to provide a crusher which can prevent a joint wheel from being loosened in a joint bolt even when a large impact is applied or a time is elapsed in a demolishing process The purpose.

Another object of the present invention is to provide a crusher which can be tightened by rotating a joint wheel in a state where it is mounted at a boom stand when the clamp body is loosened with respect to the bracket body.

According to an aspect of the present invention,
A bracket body 10 having a first joint hole 11 formed at a lower end thereof and having first and second wing brackets 15 and 16 coupled to both sides of a heavy equipment boom (not shown); A hydraulic cylinder S1 for providing power to pinch and unblock a pair of shredding jigs J1 and J2 and a shredding jaw of the pair of shredding jigs J1 and J2 and a second joint hole 21 corresponding to the first joint hole 11, (20) provided with a gripping member (S2); A joint bolt 30 composed of a head 31 which is hooked on the pawl body 20 and a bolt body 32 penetrating through the first and second joint holes 11 and 21; The bolt body 32 is fastened to the bolt body 32 through the first and second joint holes 11 and 21 in the bracket body 10. The nut portion 41 is screwed to the bolt body 32 on the inner circumferential surface. An annular joint wheel 40 having a gear 42 formed on an outer peripheral surface thereof; A worm shaft 51 rotatably supported on the first and second wing brackets 15 and 16 and a worm shaft 51 formed on an outer circumferential surface of the worm shaft 51 and screwed to a gear 42 of the joint wheel 40. [ A worm gear 50 formed at one end of the worm shaft 51 and having a wrench end 53 protruding outward from the second wing bracket 16; A clutch 70 installed in the second wing bracket 16 to prevent the worm gear 50 from being rotated in only one direction and rotated in the opposite direction; And a clutch fixing cover (80) for fixing the clutch (70) to the second wing bracket (16) and preventing the clutch (70) from being exposed to the external environment;
The clutch fixing cover 80 is formed in the center of the first groove 81a and the first groove 81a which is in close contact with the second wing bracket 16 and in which a part of the clutch 70 is engaged A first cover block 81 having a first through hole 81b through which the worm shaft 51 passes; And a second through hole 82b formed at the center of the second groove 82a and through which the worm shaft 51 passes is formed in a second groove 82a in which the remainder of the clutch 70 is engaged, (82); A bolt 83 passing through the first and second cover blocks 81 and 82 and the second wing bracket 16; And a nut (84) fastened to the bolt (83) passing through the second wing bracket (16) on the opposite side of the first and second cover blocks; A recessed stepped cap portion 12 having a first contact surface 12a formed on the lower side of the bracket body 10 and a second contacted portion 12 corresponding to the first contact surface on the upper side of the gripper body 20, A convex stepped tread 22 on which a surface 22a is formed is formed; An annular first bushing 22 is provided between an inner lower side of the cap 12 and an upper side of the tang 22 in order to prevent direct contact between the first close contact surface 12a and the second close contact surface 22a, a bushing 91 is installed; In order to prevent direct contact between the inner surface of the recessed stepped cap 12 and the outer surface of the stepped step 22, the inner surface of the recessed stepped cap 12 and the convex stepped tread And a second bushing (92) in the form of a rim is provided between the outer surfaces of the first and second bushings (22, 22).

The clutch 70 includes an outer ring 71 fixed to the second wing bracket 16 and a second wing bracket 16 relatively rotated in one direction with respect to the outer ring 71, And an inner ring (72) to which the worm shaft (51) passing through the inner ring (72) is fixed. A first key groove 73 is formed in the outer circumferential surface of the worm shaft 51 and a second key groove 74 is formed in the inner circumferential surface of the inner ring 72. The first key groove 73, And the second key groove 74 is fitted with the fitting piece 75 which is simultaneously engaged with the first and second key grooves.
In the present invention, the wrench end (53) protrudes outward through the clutch fixing cover (80).

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According to the present invention, it is possible to prevent the joint wheel from being loosened in the joint bolt even if a large impact is applied to the main body of the pavement during the demolishing process or even if it takes time.

Further, since the clutch is kept isolated from the outside by the clutch fixing cover, it is possible to prevent the clutch from being damaged by the concrete debris during the demolition process.

Since the wrench end of the worm gear is exposed to the outside through the clutch fixing cover, the operator rotates the wrench end exposed to the outside of the clutch fixing cover in a state where the crusher is mounted on the boom stand when the main body is loosened with respect to the bracket main body The joint wheel can be tightened and maintenance is easy.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a maintenance-
FIG. 2 is an exploded cross-sectional view of the bracket body and the main body of FIG. 1,
FIG. 3 is a front view of the bracket body of FIG. 1,
Fig. 4 is an exploded cross-sectional view of the clutch and the clutch fixing cover of Fig. 4,
Fig. 5 is a view for explaining a coupling structure of the worm shaft and the clutch of Fig. 4; Fig.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a perspective view of a crusher according to an embodiment of the present invention, FIG. 2 is an exploded cross-sectional view of the bracket body and the main body of FIG. 1, and FIG. 3 is a front view of the bracket body of FIG. 1.

As shown in FIG. 1, the crusher according to the present invention has a first joint hole 11 at a lower end thereof. The crusher has first and second wing brackets (not shown) coupled to a heavy equipment boom 15) < / RTI >16; A second joint hole 21 corresponding to the first joint hole 11 is formed and a hydraulic cylinder S1 for providing power to pinch and open the pair of shredding jigs J1 and J2 and the shredding jaw S2) is installed on the pawl main body (20); A joint bolt 30 composed of a head 31 which is hooked on the pliers main body 20 and a bolt body 32 passing through the first and second joint holes 11 and 21; The nut member 41 is fastened to the bolt body 32 passing through the first and second joint holes 11 and 21 in the bracket body 10 and has a nut portion 41 screwed to the bolt body 32 on the inner circumferential surface thereof , An annular joint wheel (40) having a gear (42) on an outer peripheral surface thereof; A worm shaft 51 rotatably supported on the first and second wing brackets 15 and 16 and a worm 52 formed on the outer circumferential surface of the worm shaft 51 and screwed to the gear 42 of the joint wheel 40, A worm gear 50 formed at one end of the worm shaft 51 and constituted by a wrench end 53 protruding outside the second wing bracket 16; A shaft bearing 60 provided in the first and second wing brackets 15 and 16 and supporting the worm shaft 51; A clutch 70 installed in the second wing bracket 16 for preventing the worm gear 50 from rotating in one direction and rotating in the opposite direction; And a clutch fixing cover 80 for fixing the clutch 70 to the second wing bracket 16 and preventing the clutch 70 from being exposed to the external environment.

The bracket body 10 rotatably supports the main body 20 together with a function of connecting the main body 20 to a boom band such as an excavator or a crane. 1, first and second wing brackets 15 and 16 are formed in the bracket body 10 to form a link through hole to be connected to the boom frame. The first and second wing brackets 15 ) 16 is provided with a connecting rod 17 for coupling with the boom. The first and second wing brackets 15 and 16 are provided with a shaft bearing 60 for supporting a worm shaft 51 of a worm gear to be described later.

The forceps main body 20 is provided with hydraulic cylinders S1 and S2 that provide power to disengage and open a pair of breakage clamps J1 and J2 for crushing concrete, A hydraulic circuit for applying hydraulic pressure to the hydraulic cylinders S1 and S2 is provided. Here, the pair of shredding jaws J1 and J2 and the hydraulic cylinders S1 and S2 for crushing are common in the art, and thus a detailed description thereof will be omitted.

The joint bolt 30 serves as an intermediary between the bracket body 10 and the joint bolt 30 and is fastened to the joint bracket 40 to be described later so that the bracket body 10 and the main body 20 are in close contact with each other . The joint bolt 30 is composed of a head 31 which is hooked on a tang 22 of the main body 20 to be described later and a bolt body 32 penetrating the first and second joint holes 11 and 21 .

1, the joint bolt 30 is illustrated as being positioned between the bracket body 10 and the pliers main body 20 for illustration purposes, but is actually located inside the pliers main body 20, 1 and 2 joint holes 11 and 21 and protrudes toward the bracket body side.

The joint wheel 40 is annular in its entirety. A nut portion 41 is formed on the inner peripheral surface of the joint wheel 40 to be screwed with the bolt body 32, and a gear 42 is formed on the outer circumferential surface.

2, on the lower side of the bracket body 10, there is formed a recessed stepped cap portion 12 formed with a flat first contact surface 12a. On the upper side of the gripper body 20, And a convex step-down tilting step 21 in which a second contact surface 22a corresponding to the surface is formed is formed.

As shown in FIG. 2, in order to prevent direct contact between the first contact surface 12a and the second close surface 22a of the metal material, the inner lower side of the cap 12 and the lower inner surface of the tang 22 An annular first bushing 91 is provided between the upper sides. The first bushing 91 is pressed against the bracket body 10 and the pawl body 20 when the joint wheel 40 tightens the joint bolt 30 by the rotation of the worm wheel 50 Thereby maintaining a close contact state. Accordingly, even if a large impact is applied to the main body 20 in the demolding process, the impact is absorbed by the first bushing 91, thereby minimizing loosening of the joint wheel 40 from the joint bolt 30 have.

In order to prevent direct contact between the inner surface of the recessed stepped portion 12 of the metal and the outer surface of the stepped portion 22 of the stepped portion of the stepped portion 12, And a second bushing 92 in the form of a rim is provided between the inner side surface and the outer side surface of the convex stepped tang 22. The second bushing 92 prevents the inner peripheral surface of the cap 12 and the outer peripheral surface of the tang 22 from being damaged when the main body 20 is rotated relative to the bracket body 10.

The cap bolts 30 are formed on the outer circumferential surface of the joint bolt 30 between the inner circumferential surfaces of the second joint holes 21 to prevent the outer circumferential surface of the joint bolts 30 from coming into direct contact with the inner circumferential surface of the second joint hole 21. [ 3 bushing 93 is installed. This third bushing 93 prevents the clamping body 30 from jumping against the joint bolt 30 while the joint bolt 30 is in the state where the joint wheel 40 is tightened.

The worm gear 50 is provided on the bracket body 10 and rotates the joint wheel 40 by the operation of the operator. As shown in Fig. 3, the worm gear 50 includes first and second wing brackets 15, 16, A worm 52 that is coupled to the gear 41 of the joint wheel 40 and a worm 52 which is formed at one end of the worm shaft 51 and which is located outside the second wing bracket 16 And a protruding wrench end 53. At this time, the wrench end 53 is exposed to the outside through the clutch fixing cover 80 to be described later.

With such a worm gear structure, the operator rotates the worm gear 50 in one direction by rotating the worm gear 53 in one direction after inserting a wrench (not shown).

The shaft bearing 60 is supported by the first and second wing brackets 15 and 16 to rotatably support the worm shaft 51 of the worm gear. The shaft bearing 60 is supported by the first and second wing brackets 15 through the worm gear 50 when the impact force is applied to the grip assembly 20 or the worm gear 50 is rotated, A tapered roller bearing capable of supporting a pressure applied to the roller 16 side.

FIG. 4 is an exploded cross-sectional view of the clutch and the clutch fixed cover of FIG. 4, and FIG. 5 is a view for explaining a coupling structure of the worm shaft and the clutch of FIG.

The clutch 70 is mounted on the second wing bracket 16 and allows the worm gear 50 to rotate in one direction, that is, only in the direction in which the joint wheel 40 tightens the joint bolt 30, Do not rotate. The clutch 70 includes an outer ring 71 fixed to a second wing bracket 16 and more precisely a clutch fixed cover 80 fixed to the second wing bracket 16, And an inner wheel 72 which is relatively rotated in one direction and to which a worm shaft 51 passing through the second wing bracket 16 is fixed.

5, a first key groove 73 is formed in the outer circumferential surface of the worm shaft 51, and a first key groove 73 is formed in the inner circumferential surface of the inner ring 72 A second key groove 74 is formed in the second key groove 74 and the first and second key grooves 73 and 74 are fitted with the engaging pieces 75 inserted into the first and second key grooves at the same time.

The clutch 70 can rotate the worm wheel 50 in one direction and prevent the worm wheel 50 from rotating in the opposite direction so that a large impact is applied to the pawl body 20 during the crushing process of the concrete structure, The joint wheel 40 is prevented from loosening in the joint bolt 30 even in the process of rotating the joint wheel 40 at a predetermined angle. This minimizes loosening of the joint wheels in the joint bolts even after time has elapsed. That is, even if the joint wheel 40 is subjected to a force in the direction of being unwound from the joint bolt 30 by the impact applied to the main body 20, the clutch 70 causes the worm wheel 50 to rotate Thereby minimizing loosening of the joint wheel 40 in the joint bolt 30 even if time passes.

The clutch fixing cover 80 fixes the clutch 70 to the second wing bracket 16 and prevents the clutch 70 from being exposed to the external environment.

The clutch fixing cover 80 is formed in the center of the first groove 81a and the first groove 81a which are in close contact with the second wing bracket 16 and in which a part of the clutch 70 is engaged, A first cover block 81 having a first through hole 81b through which the clutch 70 is inserted and a second groove 82b formed at the center of the second groove 82a and the second groove 82a in which the remainder of the clutch 70 is engaged, A second cover block 82 having a second through hole 82b through which the first cover block 51 penetrates and a bolt 83 extending through the first and second cover blocks 81 and 82 and the second wing bracket 16 And a nut 84 fastened to the bolt 83 passing through the second wing bracket 16 on the opposite side of the first and second cover blocks. With this structure, when the bolts 83 and the nuts 84 are engaged with the clutch 70 inserted into the first and second grooves 81a and 82a, the clutch 70 is engaged with the first and second cover blocks 81) (82).

At this time, the worm shaft 51 of the worm gear is fixed to the clutch 70, and the wrench end 53 protrudes outward through the clutch fixing cover 80. [ Therefore, the operator can tighten the joint wheel 40 by rotating the wrench end 53 using the wrench in a state where the crusher is mounted on the boom stand when the main body 20 is loosened with respect to the bracket body 10 . The operator can easily tighten the joint wheel 40 in a state where the crusher is separated from the boom frame or the clutch 70 or the clutch fixed cover 80 is not separated.

As described above, according to the present invention, by adopting the clutch 70, the joint wheel 40 is loosened in the joint bolt 30 even if a large impact is applied to the main body 20 during the demolishing process or even when the time is elapsed Can be prevented.

Further, since the clutch 70 is kept isolated from the outside by the clutch fixing cover 80, it is possible to prevent the clutch 70 from being damaged by the concrete debris in the demolition process.

Since the wrench end 53 of the worm gear 50 is exposed through the clutch fixing cover 80 to the outside, the operator can grasp the crusher when the gripper body 20 is loosened with respect to the bracket body 10 The joint wheel 40 can be tightened by rotating the wrench end 53 exposed to the outside of the clutch fixed cover 80 in a state where the clutch wheel is in the closed state, thereby facilitating maintenance.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.

10 ... Bracket body 11 ... First joint hole
12 ... capstan 12a ... first contact surface
15, 16 ... First and second wing brackets 20 ... Tongue body
22 ... tuck stage 22a ... second contact surface
30 ... Joint bolt 31 ... Head
32 ... bolt body 41 ... nut part
42 ... Gear 50 ... Worm gear
51 ... worm shaft 52 ... worm
53 ... wrench only 60 ... shaft bearing
70 ... clutch 71 ... outer ring
72 ... inner ring 73. 74 ... 1st and 2nd keyways
75 ... fitting 80 ... clutch fixed cover
81 ... first cover block 81a ... first groove
81b ... first through hole 82 ... second cover block
82a ... second groove 82b ... second through hole
83 ... bolt 84 ... nut,
91 ... annular first bushing 92 ... rimmed second bushing
93 ... cap-shaped third bushing

Claims

A bracket body 10 having a first joint hole 11 formed at a lower end thereof and having first and second wing brackets 15 and 16 coupled to both sides of a heavy equipment boom (not shown);
A hydraulic cylinder S1 for providing power to pinch and unblock a pair of shredding jigs J1 and J2 and a shredding jaw of the pair of shredding jigs J1 and J2 and a second joint hole 21 corresponding to the first joint hole 11, (20) provided with a gripping member (S2);
A joint bolt 30 composed of a head 31 which is hooked on the pawl body 20 and a bolt body 32 penetrating through the first and second joint holes 11 and 21;
The bolt body 32 is fastened to the bolt body 32 through the first and second joint holes 11 and 21 in the bracket body 10. The nut portion 41 is screwed to the bolt body 32 on the inner circumferential surface. An annular joint wheel 40 having a gear 42 formed on an outer peripheral surface thereof;
A worm shaft 51 rotatably supported on the first and second wing brackets 15 and 16 and a worm shaft 51 formed on an outer circumferential surface of the worm shaft 51 and screwed to a gear 42 of the joint wheel 40. [ A worm gear 50 formed at one end of the worm shaft 51 and having a wrench end 53 protruding outward from the second wing bracket 16;
A clutch 70 installed in the second wing bracket 16 to prevent the worm gear 50 from being rotated in only one direction and rotated in the opposite direction; And
And a clutch fixing cover (80) for fixing the clutch (70) to the second wing bracket (16) and preventing the clutch (70) from being exposed to the external environment;
The clutch fixing cover 80 is formed in the center of the first groove 81a and the first groove 81a which is in close contact with the second wing bracket 16 and in which a part of the clutch 70 is engaged A first cover block 81 having a first through hole 81b through which the worm shaft 51 passes; And a second through hole 82b formed at the center of the second groove 82a and through which the worm shaft 51 passes is formed in a second groove 82a in which the remainder of the clutch 70 is engaged, (82); A bolt 83 passing through the first and second cover blocks 81 and 82 and the second wing bracket 16; And a nut (84) fastened to the bolt (83) passing through the second wing bracket (16) on the opposite side of the first and second cover blocks;
A recessed stepped cap portion 12 having a first contact surface 12a formed on the lower side of the bracket body 10 and a second contacted portion 12 corresponding to the first contact surface on the upper side of the gripper body 20, A convex stepped tread 22 on which a surface 22a is formed is formed;
An annular first bushing 22 is provided between an inner lower side of the cap 12 and an upper side of the tang 22 in order to prevent direct contact between the first close contact surface 12a and the second close contact surface 22a, a bushing 91 is installed;
In order to prevent direct contact between the inner surface of the recessed stepped cap 12 and the outer surface of the stepped step 22, the inner surface of the recessed stepped cap 12 and the convex stepped tread 22) is provided with a second bushing (92) in the form of a rim.

2. The automatic transmission according to claim 1, wherein the clutch (70)
A wing shaft 51 which is relatively rotated in one direction relative to the outer ring 71 and is fixed to the wing shaft 51 passing through the second wing bracket 16, (72). &Lt; RTI ID = 0.0 > [0002] < / RTI >

3. The method of claim 2,
A first key groove 73 is formed in the outer circumferential surface of the worm shaft 51 and a second key groove 74 is formed in the inner circumferential surface of the inner ring 72 so that the first key groove 73, And the second keyway (74) is fitted with a fitting piece (75) which is simultaneously engaged with the first and second keyways.

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The method according to claim 1,
And the wrench end (53) protrudes outward through the clutch fixing cover (80).

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