KR930003793Y1 - Breaker - Google Patents

Abstract

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Description

Chisel clamping bushing stripping device inserted into the hole of the rock drill hammer bracket

1 is an overall exploded perspective view of a frame body for supporting hammer brackets with rectangular holes.

2 is a perspective view of a hammer bracket fixedly installed with a rectangular hole in a support plate attached to a frame body of the present invention.

Figure 3 is an enlarged longitudinal cross-sectional view of the side of the hammer body fixed to the chisel is clamped to the frame body of the present invention.

Figure 4a, b, c, d is a longitudinal cross-sectional view showing a state in which the hammer bracket is fixed to the frame body of the present invention and then the bushing in the through hole installed through the hammer bracket is removed by using a hydraulic piston.

5 is an overall perspective view of a frame bracket for supporting a hammer bracket on which a cutting recess is formed.

6 is a perspective view of a hammer bracket fixedly installed with a cutting recess in the frame body of the present invention.

Figure 7 is an enlarged longitudinal cross-sectional view of the hammer bracket fixed to the frame body of the present invention.

8a, b, c, d is a longitudinal cross-sectional view showing a state in which the hammer bracket is fixedly installed on the frame main body of the present invention, and then the replacement bushing that is press-fitted into the hammer bracket is removed using a hydraulic piston.

* Explanation of symbols for main parts of the drawings

1,1a: frame body 1 ': spiral ball

1 ": Hanging stone jaw 2: Through hole

3,3 ': support plate 4,4': long pincer

5,5 ': Reinforcement piece 101,101': Hammer bracket

301,302: Upper and lower bushings 201: Hydraulic piston shaft

501: Relocation

The present invention is a hammer bracket for a rocker that is used to crush and remove a large rock layer and a hardened concrete impulse formed by the strata formed by the layers that are difficult to excavate with general heavy equipment when the ground laying work is performed in various basic construction works. If the chisel clamping bushing pushed into the hole of the hole has to be extended or damaged due to long-term use, and it needs to be replaced with a new one, the bushing press-fitted into the hole of the hammer bracket can be easily removed and replaced with a new bushing. A chisel clamping bushing removal device press-fitted into a hole of a hammer bracket for an industrial machine.

Conventionally, when using a bushing that firmly pinches a hole in a hammer bracket through a rock chisel, the chisel cannot be firmly held due to the expansion of the internal diameter, and thus cannot be used. In order to remove this from the hole of the hammer bracket, the bushing is heated to high temperature using an oxygen welding machine, etc., and then quenched with water to shrink the bushing, and then pulled out using hand tools such as lever and hammer. During the heating process, the hammer bracket main body was heated at the same time, resulting in the deformation of the hammer bracket's material strength, etc., and the bushing press-fitted into the hole of the hammer bracket through electric cutting welding was cut into several pieces. It is also working together, but removes the bushing by cutting welding Are the results in the high-temperature heat treatment in the inner peripheral surface of the through-hole hammer bracket, even when it was generated a problem that the reduction in the service life of the hammer bracket.

The present invention has been devised to solve the problems in view of the related art, and will be described in detail with reference to the accompanying drawings.

The locking jaw 104 is press-fitted into the formed through hole 103 and then clamped by the fixing pins 301 and 302 'to the inner diameter of the upper and lower bushings 301 and 302 fixed with the fixing pins 401'. In the hammer bracket 101 'in which the hammer bracket 101 in which the rectangular hole 102 which can be integrally assembled which the chisel 401 is integrated, and the cutting recess 102' are formed in the both side parts, a hammer bracket Support plate on which the reinforcing pieces (5) and (5 ') in which the rectangular projections (4) and (4') which can be inserted into the rectangular holes (102) installed in both side portions of the 101 are protruding integrally to the inner surface are welded ( 3) 3 'is fastened so as to be attached with bolts 6 and 6' on both side portions of the frame body 1 in which a plurality of spiral holes 1 'are installed, and between the support plates 3 and 3'. Fixed plan that the hydraulic piston shaft 201 is installed in the spiral hole 2 'of the frame body 1 on which the through hole 2 coinciding with the through hole 103 of the fixed hammer bracket 101 is installed. It is made by fastening the ruler 202 with the bolt 203. Through holes of the hammer bracket 101 'on the frame main body 1a protruding from the inner circumferential surface of the rubbing protrusion 1 "which can be inserted into the cutting recess 102' symmetrically formed on both side portions of the kit 101 '. The through hole (2) coinciding with the (103) and installed in the spiral hole (2 ') periphery of the through hole (2), the fixed flange 202 is built in the hydraulic piston shaft 201 to be electrically operated bolt (203) It was made by tightening with).

The conventional hammer brackets 101 and 101 'can be classified into two types in which rectangular holes 102 are laid on both side surfaces and cutting recesses 102' are formed. When removing the upper and lower bushings 301 and 302 press-fitted in the hammer hammer 101 through hole 103, the fixing pin 401 'is detached to remove the chisel 401 and the upper and lower parts are removed. The support plate 3 (2) which is inserted between the bushings 301 and 302 and the hammer bracket 101 is detached from both sides of the frame body 1 after detaching the fixing pins 301 'and 302' which prevent flow. 3 '), the frame body in which the rectangular pinching protrusions 4 and 4' protruding from the inner side of the hammer bracket 101 are pinched into the rectangular holes 102 laid on both sides of the hammer bracket 101, and the spiral holes 1 'are laid out. After mounting the support plate 3 (3 ') to both sides of the 1) bolts (6) to securely attach to both side portions (see Fig. 3 in the figure), the mounting piece 501 mounted on the periphery of the lower bushing 302 To the hydraulic piston shaft 201 If the lower bushing 302 is removed from the through hole 103 of the hammer bracket 101 (see FIGS. 4a and b in the drawing), the lower bushing 302 is placed on the periphery of the upper bushing 301 in the same manner as described above. When the piece 501 is pushed to the hydraulic piston shaft 201, the upper bushing 301 is to be removed from the through hole 103 of the hammer bracket 101.

In addition, the upper and lower bushings 301 and 302, which are press-fitted into the through hole 103 of the hammer bracket 101 'having the cutting recesses 102' formed on both side surfaces, should be removed as described above. '(301') and (302 ') are removed from the chisel (401) from the upper and lower bushings (301, 302) first, and then the rubbings integrally formed on both inner surfaces of the frame body (1a). The hammer bracket 101 'is fixed so that the cutting recess 102' is clamped on the protrusion 1 "(see FIG. 6 and FIG. 7 in the figure) and a mounting piece placed on the periphery of the lower bushing 302 ( When the 501 is pushed into the hydraulic piston shaft 201, the lower bushing 302 is removed from the through hole 103 of the hammer bracket 101 '(see FIG. 8a and b in the drawing). When the mounting piece 501 mounted on the periphery of the upper bushing 301 is pushed to the tip of the hydraulic piston shaft 201, the upper bushing 301 is easily removed from within the through hole 103 of the hammer bracket 101 ′. Ha Kane will be stripped.

As described above, the frame body (1) (1a) capable of fixing the hammer bracket 101 having the rectangular hole 102 installed at both side portions and the hammer bracket 101 'formed at the both side surfaces thereof. By integrally mounting the hydraulic piston shaft 201 on the upper and lower bushings 301 firmly press-fitted into the through holes 103 installed in the hammer brackets 101 and 101 'for clamping the chisel 401. 302 is easily removed by removing the old upper and lower bushings (301, 302) when the inner diameter is expanded or damaged due to strong vibration and impact during rock drilling using the tip of the chisel (401). It is possible to quickly replace with a new one, so that the repair work of the hammer bracket can be performed more effectively, and the upper and lower bushings 301 press-fitted into the through holes 103 of the hammer brackets 101 and 101 '. When the 302 is removed using the hydraulic piston shaft 201 on the frame body 1 (1a) It is preferable to remove the upper and lower bushings 301 and 302 by pushing the mounted hydraulic piston shaft 201, but on the contrary, the hydraulic piston shaft 201 is mounted on the lower end of the frame body 1 and 1a to provide a hammer bracket. The upper and lower bushings 301 and 302 press-fitted into the through hole 103 of the 101 and 101 'may be pulled out by the hydraulic piston shaft 201, and the hydraulic piston may be performed as described above. The removal of the bushing using the power of the shaft does not cause any physical damage to the hammer bracket body, and thus has the advantage of extending the life of the hammer bracket, which is used as a main part of heavy equipment, for long use.

Claims (3)

The chisel 401, the upper and lower bushings 301 and 302 for clamping the ceiling are mounted on the upper end of the frame body 1, 1a that can fix the hammer bracket 101, 101 'pressed into the through hole 103. Bushing removal device for chisel clamping which is press-fitted into the hole of the hammer bracket for rock drill by fastening the fixed flange 202 with the built-in hydraulic piston 201 on the through hole 2 with the bolt 203. . The support plate according to claim 1, wherein the rectangular clamping projections (4) and (4 '), which can be clamped into the rectangular holes (102) of the hammer bracket (101) installed on both sides, are projected on the inner side. (3) (3 ') to bolt (6) (6') to the threaded hole (1 ') on both sides of the frame body (1) and through holes (2) installed on the frame body (2). For clamping the chisel (Chisel) press-fitted into the hole of the hammer bracket for rock drills by fastening the fixing flange 202 to the spiral hole 2 'with the bolt 203 so that the hydraulic piston shaft 201 can be inserted through Bushing stripping device. The method of claim 1, wherein the cutting recess 102 'is formed integrally with both inner surface portions of the rubbing protrusion 1 "which can be clamped into the cutting recess 102' of the hammer bracket 101 'formed on both side portions. Through hole (2) of the frame body (1a) through the hole of the hammer bracket for rock drills by fastening the fixed flange 202 to the spiral hole (2 ') with a bolt 203 so that the hydraulic piston shaft (201) can be inserted Bushing stripping device for chisel pinching.