Hydraulic breaking hammer rack

Abstract

The hydraulic breaking hammer rack comprises a front clamping plate, a rear clamping plate, a left clamping plate and a right clamping plate. The front clamping plate and the rear clamping plate are connected with the hydraulic breaking hammer main machine through whole-body bolt pairs, and the left clamping plate and the right clamping plate are connected with the hydraulic breaking hammer main machine through clamping plate bolt pairs. The force of the clamping plate in the movement direction of the hydraulic breaking hammer is borne by the whole-body bolt pair, so that the bolt is not easy to loosen; down thread fasteners are adopted in the whole body bolt pair and the clamping plate bolt pair, and the problems of bolt looseness and breakage are thoroughly solved.

Description

Technical Field

[0001] The invention relates to the technical field of hydraulic breaking, and in particular to a hydraulic breaking hammer frame. Background Art

[0002] Hydraulic breakers are widely used in the demolition of roads and buildings, as well as the crushing of rocks and minerals.

[0003] The hydraulic breaker includes a main machine and a frame. The nitrogen chamber, piston cylinder and drill rod seat in the main machine are connected by a through-body bolt pair; the main machine and the frame are connected by clamping plate bolts; the excavator and the frame are connected by shaft pins on the left and right clamping plates.

[0004] This type of frame does not have front and rear clamps on the front and back of the frame. The main machine and the frame are connected by clamp bolts through left and right clamps. Since the clamp bolts are perpendicular to the movement direction of the hydraulic breaker, they are easily loosened by shear force, further causing the bolts to break and the hydraulic breaker to fail to work. Although the clamp bolts use technologies such as elastic rods and arc threads, the problem of bolt loosening and breaking still cannot be solved. Summary of the invention

[0005] In view of the deficiencies of the prior art, the present invention proposes a technical solution of directly connecting a mainframe and a frame by using a through-body bolt pair.

[0006] The present invention is designed as follows: the through-body bolt pair directly connects the main machine and the frame through the front and rear clamping plates; the force direction of the through-body bolt pair connecting the frame is consistent with the movement direction of the piston; the through-body bolt pair is only subjected to tensile force but not shear force, and is therefore not easy to loosen or even be damaged; in addition, the main machine and the frame are connected by clamping plate bolts; since the through-body bolt pair bears the load generated when the main machine and the frame move, the clamping plate bolt pair is not subjected to radial shear force and only serves to position the main machine and the frame.

[0007] The key to using bolts is to make the bolts subject to tension as much as possible and avoid shearing as much as possible. The technical solution of the present invention makes the full-body bolt pair and the clamping plate bolt pair subject to tension and not subject to shearing through the arrangement of two kinds of bolts, thereby providing a good working environment for the bolt pair. At the same time, Tang's threaded fasteners are also used to prevent loosening, which completely solves the problem of loosening and breaking of hydraulic breaker bolts. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Attached Figure 1 It is a stereogram of the present invention.

[0009] Attached Figure 2 It is a schematic diagram of the structure of the mainframe and the frame fastened with through-body bolts of the present invention.

[0010] Attached Figure 3This is a schematic diagram of the structure of the clamping plate bolts fastening the mainframe and the frame of the present invention.

[0011] Attached Figure 4 It is a schematic diagram of the structure of the clamping plate after the clamping plate bolts are tightened according to the present invention.

[0012] Explanation of the markings in the diagram: 1 front splint, 2 rear splint, 3 left splint, 4 right splint, 5 axle pin, 6 through-body bolt pair, 7 splint bolt pair, 8 gasket. DETAILED DESCRIPTION

[0013] In the attached Figure 1 In the embodiment, the frame includes a front clamping plate 1, a rear clamping plate 2, a left clamping plate 3, a right clamping plate 4 and an axle pin 5. The front clamping plate 1, the rear clamping plate 2 and the piston cylinder and the nitrogen chamber are connected by a through-body bolt pair 6; the left clamping plate 3, the right clamping plate 4 and the piston cylinder are connected by a clamping plate bolt pair 7 through a gasket 8; the left clamping plate 3, the right clamping plate 4 and the nitrogen chamber are connected by a clamping plate bolt pair 7 through a gasket 8; the left clamping plate 3, the right clamping plate 4 and the rear clamping plate 2 are connected by a clamping plate bolt pair 7. The front clamping plate 1, the left clamping plate 3 and the right clamping plate 4 are welded as a whole.

[0014] In the attached Figure 2 In the process, since the piston movement direction is consistent with the pre-tightening direction of the through-body bolt pair 6, the through-body bolt pair 6 is only subjected to the axial force, but not the radial shear force, and therefore is not easy to loosen. In order to completely solve the problem of bolt loosening, the through-body bolt pair 6 adopts a Tang's threaded fastener connection pair (see "Machinery Design Manual" (Chemical Industry Press, edited by Cheng Daxian) sixth edition, volume 2, sixth edition, page 6-180), and the through-body bolt pair 6 is composed of Tang's threaded bolts and right-handed nuts and left-handed nuts.

[0015] In the attached Figure 3 In the figure, the left clamping plate 3, the right clamping plate 4 and the piston cylinder are connected by the clamping plate bolt pair 7 through the gasket 8. Since the force in the direction of movement of the hydraulic breaker is borne by the through-body bolt pair 6, the clamping plate bolt pair 7 that fastens the piston cylinder mainly plays a positioning role and is not subject to radial shear force. The clamping plate bolt pair 7 adopts a Tang's threaded fastener structure.

[0016] In the attached Figure 2 In the figure, the left clamping plate 3, the right clamping plate 4 and the nitrogen chamber are connected by the clamping plate bolt pair 7 through the gasket 8. Since the force in the moving direction of the hydraulic breaker is borne by the through-body bolt pair 6, the clamping plate bolt pair 7 that tightens the nitrogen chamber mainly plays a positioning role and is not subject to radial shear force.

[0017] In the attached Figure 4 In the figure, the left clamping plate 3, the right clamping plate 4 and the rear clamping plate 2 are connected by the clamping plate bolt pair 7. Since the force in the moving direction of the hydraulic breaker is borne by the through-body bolt pair 6, the clamping plate bolt pair 7 that tightens the left clamping plate 3, the right clamping plate 4 and the rear clamping plate 2 is not subject to radial shear force.

[0018] It is generally believed that bolts subjected to shear force are more likely to loosen than bolts subjected to tensile force. In the embodiment of the present invention, the full-body bolt pair 6 and the clamping plate bolt pair 7 are divided into two parts, so that the full-body bolt pair 6 and the clamping plate bolt pair 7 are mainly subjected to the force in the tensile direction but not the force in the shear direction. Moreover, both the full-body bolt pair 6 and the clamping plate bolt pair 7 adopt Tang bolt connection pairs, which completely solves the problem of loosening of the threads of the full-body bolt pair 6 and the clamping plate bolt pair 7, and provides good conditions for the operation of the hydraulic breaker.

Claims

1. A hydraulic breaker frame, characterized in that: The frame comprises a front clamping plate, a rear clamping plate, a left clamping plate and a right clamping plate. The front clamping plate and the rear clamping plate are connected to the hydraulic breaker host through a through-body bolt pair.

2. A hydraulic breaker frame according to claim 1, characterized in that The left clamping plate and the right clamping plate are connected to the main machine of the hydraulic breaker through a clamping plate bolt pair.

3. A hydraulic breaker frame according to claim 1, characterized in that The left clamping plate, the right clamping plate and the rear clamping plate are connected by clamping plate bolt pairs.

4. A hydraulic breaker frame according to claim 1, characterized in that The through-body bolt pair is a Tang's threaded connection pair.

5. A hydraulic breaker frame according to claim 2, characterized in that The splint bolt pair is a Tang's threaded connection pair.

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