CN212052957U

CN212052957U - Hydraulic breaking hammer and sealing assembly for same

Info

Publication number: CN212052957U
Application number: CN202020706969.1U
Authority: CN
Inventors: 赵卫乐; 宋鸥; 李哲民; 傅贻文; 马晓林
Original assignee: Yantai Eddie Precision Machinery Co Ltd
Current assignee: Yantai Eddie Precision Machinery Co Ltd
Priority date: 2020-04-30
Filing date: 2020-04-30
Publication date: 2020-12-01
Anticipated expiration: 2030-04-30

Abstract

The utility model relates to a seal assembly for a hydraulic breaking hammer, which comprises a first annular seal element and a second annular seal element, wherein an annular groove is arranged on the upper end surface of the first annular seal element, and the second annular seal element is arranged in the annular groove; the hydraulic breaking hammer comprises an upper shell, a cylinder body and a lower shell which are fixedly connected from top to bottom in sequence, wherein a piston is arranged in the cylinder body, the lower end of the piston extends out of the lower end of the cylinder body, a drill rod is arranged in the lower shell, the piston drives the drill rod to move upwards when striking the drill rod, a plurality of annular sealing grooves are formed in the inner wall of the lower part of the cylinder body, and the sealing assemblies are arranged in the annular sealing grooves; after the lip of first annular seal member wore, second annular seal member elastic deformation for the lip of first annular seal member warp, guarantees good leakproofness between lip and the piston, reduces the hydraulic oil leakage problem.

Description

Hydraulic breaking hammer and sealing assembly for same

Technical Field

The utility model relates to a hydraulic pressure is seal assembly and hydraulic pressure quartering hammer for quartering hammer.

Background

As shown in fig. 8 and 9, the hydraulic breaking hammer comprises an upper shell 3, a cylinder body 4 and a lower shell 5, a piston 6 is arranged in the cylinder body 4, a drill rod 7 is arranged in the lower shell 3, the drill rod 7 is arranged below the piston 6, the lower portion of the piston 6 is provided with a lower seal, 4 annular seal grooves are arranged on the inner wall of the lower portion of the cylinder body 4, a sealing element 8 is respectively arranged in each of the two annular seal grooves in the middle, the existing sealing element 8 is a single sealing element 8, the piston 6 continuously moves up and down in the cylinder body 4, the lip of the sealing element 8 is worn quickly, the oil leakage problem is easy to occur, and the breaking hammer is prone to failure.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to the not enough of above-mentioned prior art existence, provide a sealed effectual, can reduce the hydraulic pressure sealing assembly for the quartering hammer fault rate.

The utility model provides an above-mentioned technical problem's technical scheme as follows: the utility model provides a hydraulic pressure is seal assembly for quartering hammer, includes first annular sealing member and second annular sealing member, be equipped with the ascending annular groove of opening on the up end of first annular sealing member, just the annular groove with first annular sealing member coaxial arrangement, be equipped with in the annular groove second annular sealing member.

Further, the second annular seal is an O-ring.

Furthermore, the O-shaped sealing ring is formed by a plurality of sections of thin O-shaped sections and a plurality of sections of thick O-shaped sections at intervals, and when the O-shaped ring deforms, the thin O-shaped sections can be extruded and deformed, so that the thick O-shaped sections are prevented from protruding upwards.

Further, the adjacent thin O-shaped ring and the thick O-shaped ring are in arc transition.

Further, a corresponding strip-shaped groove is formed between the inner walls of the two sides of the annular groove, and the O-shaped ring is arranged in the strip-shaped groove.

Further, an upper inner wall of the first annular seal forms a lip.

The utility model discloses still relate to a hydraulic pressure quartering hammer constructs, including from the top down fixed connection's last casing, cylinder body and inferior valve body in proper order, be equipped with the piston in the cylinder body, the lower extreme of piston stretches out the lower extreme of cylinder body, the internal drill rod that is equipped with of inferior valve, the piston drives when hitting the drill rod upward movement, its characterized in that, be equipped with a plurality of annular seal grooves on the lower part inner wall of cylinder body, be equipped with foretell seal assembly in the annular seal groove, the piston cover is established in the seal assembly.

The utility model has the advantages that: after the lip of first annular seal member wore, O type circle warp, gives the lip of first annular seal member in order to support and compensate, guarantees good leakproofness between lip and the piston, reduces the hydraulic oil and reveals the problem, and then reduces hydraulic breaking hammer trouble.

Drawings

Fig. 1 is a schematic structural view of the sealing assembly of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1;

FIG. 3 is a cross-sectional view taken along line B-B of FIG. 1;

FIG. 4 is an enlarged view of a portion of FIG. 3 according to the present invention;

fig. 5 is a schematic structural view of the O-ring of the present invention;

fig. 6 is a schematic structural view of the hydraulic breaking hammer of the present invention;

FIG. 7 is an enlarged partial view of FIG. 6 at B;

FIG. 8 is a schematic diagram of a prior art hydraulic demolition hammer;

FIG. 9 is an enlarged partial view at B of FIG. 8;

Detailed Description

The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention.

As shown in fig. 1 to 5, a sealing assembly 9 for a hydraulic breaking hammer comprises a first annular sealing element 1 and a second annular sealing element, wherein the second annular sealing element is an O-ring 2, an annular groove 1-1 with an upward opening is formed in the upper end face of the first annular sealing element, the annular groove 1-1 and the first annular sealing element 1 are coaxially arranged, a corresponding strip-shaped groove 1-11 is formed between the inner walls of the two sides of the annular groove 1-1, and the O-ring is arranged in the strip-shaped groove 1-11.

The O-shaped sealing ring 2 is formed by a plurality of sections of thin O-shaped sections 2-1 and a plurality of sections of thick O-shaped sections at intervals; and the adjacent thin O-shaped ring 2-1 and the thick O-shaped ring are in arc transition.

The upper inner wall of the first annular seal 1 forms a lip 1-2.

As shown in fig. 6 and 7, the utility model discloses still relate to a hydraulic breaking hammer, including from the top down fixed connection's last casing 3, cylinder body 4 and lower casing 5 in proper order, be equipped with piston 6 in the cylinder body 4, the lower extreme of piston 6 stretches out the lower extreme of cylinder body 4, be equipped with drill rod 7 in the casing 5 down, when piston 6 hit drill rod 7, drive drill rod 7 upward movement, be equipped with a plurality of annular seal grooves on the lower part inner wall of cylinder body 4, be equipped with foretell seal assembly 9 in the annular seal groove, piston 6 cover is established in first annular sealing member 1.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims

1. The sealing assembly for the hydraulic breaking hammer is characterized by comprising a first annular sealing piece and a second annular sealing piece, wherein an annular groove with an upward opening is formed in the upper end face of the first annular sealing piece, the annular groove and the first annular sealing piece are coaxially arranged, and the second annular sealing piece is arranged in the annular groove.

2. The seal assembly for a hydraulic demolition hammer according to claim 1, wherein the second annular seal is an O-ring.

3. The seal assembly for a hydraulic demolition hammer according to claim 2, wherein the O-ring is formed by a plurality of fine O-ring segments and a plurality of coarse O-ring segments spaced apart from each other.

4. The seal assembly for a hydraulic demolition hammer according to claim 3, wherein adjacent ones of the thin and thick O-rings are radiused.

5. The seal assembly for a hydraulic demolition hammer according to any one of claims 2-4, wherein a corresponding strip groove is provided between the inner walls of the annular groove, and the O-ring is provided in the strip groove.

6. The seal assembly for a hydraulic demolition hammer according to any one of claims 1-4, wherein the upper inner wall of the first annular seal forms a lip.

7. The seal assembly for a hydraulic demolition hammer according to claim 5, wherein the upper inner wall of the first annular seal forms a lip.

8. A hydraulic breaking hammer comprises an upper shell, a cylinder body and a lower shell which are fixedly connected from top to bottom in sequence, wherein a piston is arranged in the cylinder body, the lower end of the piston extends out of the lower end of the cylinder body, a drill rod is arranged in the lower shell, and the piston drives the drill rod to move upwards when striking the drill rod.