CN210766970U

CN210766970U - Double-oil return structure of breaking hammer cylinder

Info

Publication number: CN210766970U
Application number: CN201921672475.XU
Authority: CN
Inventors: 陈伟豪
Original assignee: Zhejiang Lingde Heavy Industry Co ltd
Current assignee: Zhejiang Lingde Heavy Industry Co ltd
Priority date: 2019-10-08
Filing date: 2019-10-08
Publication date: 2020-06-16
Anticipated expiration: 2029-10-08

Abstract

The utility model provides a two oil return structures of quartering hammer cylinder body belongs to quartering hammer technical field. It has solved the problem that current piston is easy wearing and tearing in well cylinder body. The double-oil-return structure of the breaking hammer cylinder comprises a middle cylinder body with a piston cavity, wherein two oil guide channels penetrating through the middle cylinder body are formed in the middle cylinder body, end caps are arranged at the positions, corresponding to the oil guide channels, of two ends of the middle cylinder body, a first oil return loop and a second oil return loop are formed in the inner peripheral wall, located at the front end of the piston cavity, of the middle cylinder body, the first oil return loop and the second oil return loop are respectively provided with a first oil connecting channel enabling the first oil guide channels to be communicated, the second oil return loop and the two oil guide channels are respectively provided with a second oil connecting channel enabling the second oil guide channels to be communicated, the inner peripheral wall, located at the rear end of the piston cavity, of the middle cylinder body is provided with a circulating oil channel, and the third oil connecting channel. The utility model has the advantages of lubricated effectual and reduce wearing and tearing.

Description

Double-oil return structure of breaking hammer cylinder

Technical Field

The utility model belongs to the technical field of the quartering hammer, a two oil return structures of quartering hammer cylinder body are related to.

Background

The hydraulic breaking hammer is a machine tool capable of converting hydraulic energy into mechanical energy so as to apply work to the outside, is mainly used for breaking, dismantling, excavating hard layers and the like, and is usually installed on an excavator, a loader or a power station for use. Wherein the piston is an indispensable component of the breaking hammer, the front end and the rear end of the middle cylinder body play a role in supporting and guiding the piston in the reciprocating motion process of the piston, the clearance between the outer peripheral surface of the piston and the inner peripheral surface of the front end and the rear end of the middle cylinder body is generally several threads, the piston cannot keep absolute centering movement in the reciprocating motion process, the outer peripheral surface of the piston is easy to rub against the inner walls of the front end and the rear end of the middle cylinder body, so that the inner walls of the front end and the rear end of the middle cylinder body are seriously abraded, the middle cylinder body is scrapped, the whole middle cylinder body needs to be replaced in the maintenance process, the maintenance cost of the breaking hammer is huge due to the huge volume of the cylinder body of the large-scale mechanical equipment, on the other hand, because the oil circuit design and other auxiliary parts of the breaking hammer are arranged on the middle cylinder body, when the middle cylinder body is replaced, a plurality of auxiliary parts need to, causing inconvenience in maintenance.

Disclosure of Invention

The utility model aims at the above-mentioned problem that exists among the prior art, provide a reduce piston and well cylinder body strain phenomenon and improve well cylinder body life's two oil return structures.

The purpose of the utility model can be realized by the following technical proposal: a double oil return structure of a breaking hammer cylinder body comprises a middle cylinder body with a piston cavity and is characterized in that, the middle cylinder body is provided with two oil guide channels penetrating through the middle cylinder body, the two end parts of the middle cylinder body, which are positioned at the corresponding openings of the oil guide channels, are respectively provided with a plug which is fixedly connected with the middle cylinder body and is used for sealing the oil guide channels, the inner peripheral wall of the middle cylinder body at the front end part of the piston cavity is provided with an oil return ring channel I and an oil return ring channel II, a first oil connecting channel communicated with the first oil return loop channel and the two oil guide channels is arranged between the first oil return loop channel and the two oil guide channels, a second oil connecting channel communicated with the oil return loop channel and the two oil guide channels is arranged between the second oil return loop channel and the two oil guide channels, and a third oil connecting channel communicated with the circulating oil duct is formed between the circulating oil duct and the two oil guide channels.

In the above-mentioned two oil return structures of quartering hammer cylinder body, end cap and well cylinder body all link firmly mutually through screw-thread fit.

In the above-mentioned two oil return structures of quartering hammer cylinder body, the right flank in oil return ring way two be the surface that two sections inclination are different.

In the above double oil return structure of the cylinder body of the breaking hammer, the center line of the first connecting oil duct coincides with the center line of the first oil return loop.

In the above-mentioned double oil return structure of the cylinder body of the breaking hammer, the second oil connecting passage is obliquely arranged.

In the above-mentioned double oil return structure of the cylinder body of the breaking hammer, the third oil connecting passage is obliquely arranged.

Compared with the prior art, the double-oil-return structure of the breaking hammer cylinder body is characterized in that an oil return loop I and an oil return loop II are arranged on the inner peripheral wall of the middle cylinder body, which is located at the front end of the piston cavity, of the middle cylinder body, the oil return loop I and the oil guide channels are respectively provided with a connecting oil channel I which enables the oil guide channels to be communicated, the oil return loop II and the oil guide channels are respectively provided with a connecting oil channel II which enables the oil guide channels to be communicated, the middle cylinder body is located on the inner peripheral wall of the rear end of the piston cavity, the circulating oil channels and the two oil guide channels are provided with a connecting oil channel III which enables the oil guide channels to be communicated, and in actual operation, one oil return loop in one large loop is changed into two, so that two small loops are.

Drawings

Fig. 1 is a schematic sectional structure diagram of the double oil return structure of the cylinder body of the breaking hammer.

In the figure, 1, a piston cavity; 2. a middle cylinder body; 3. an oil guide passage; 4. a plug; 5. an oil return loop I; 6. an oil return loop II; 7. a first oil connecting channel; 8. a second oil connecting channel; 9. a circulating oil passage; 10. and a third oil connecting channel.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1, the double oil return structure of the cylinder body of the breaking hammer comprises a middle cylinder body 2 with a piston cavity 1, wherein two oil guide channels 3 which penetrate through the middle cylinder body 2 and are symmetrically arranged are formed in the middle cylinder body 2, plugs 4 which are fixedly connected with the middle cylinder body 2 and are used for sealing the oil guide channels 3 are respectively arranged at two ends of the middle cylinder body 2 and corresponding to the opening of the oil guide channels 3, an oil return loop I5 and an oil return loop II 6 are formed in the inner peripheral wall of the middle cylinder body 2 at the front end of the piston cavity 1, a connecting oil channel I7 which is communicated with the oil guide channels 3 is arranged between the oil return loop I5 and the two oil guide channels 3, a connecting oil channel II 8 which is communicated with the oil return loop II 6 and the two oil guide channels 3 is arranged between the oil return loop II 6 and the two oil guide channels 3, a circulating oil channel 9 is formed in the inner peripheral wall of the middle cylinder body 2 at the rear end of the.

As the preferred structure, the choke plug 4 is fixedly connected with the middle cylinder body 2 through thread fit.

As an optimal structure, the right side surface in the oil return loop II 6 is a surface with two sections of different inclination angles, the two oil guide channels 3 II are both arranged on the inclined surface of the oil return loop II 6, and the central line in the oil guide channel 3 II is in contact with the intersection of the two sections of inclined surfaces.

As a preferable structure, the center line of the first oil connecting passage 7 coincides with the center line of the first oil return ring passage 5 in the width direction.

Preferably, the second oil connecting passage 8 is obliquely arranged.

Preferably, the third oil connecting passage 10 is inclined, and the inclination direction of the third oil connecting passage 10 is opposite to the inclination direction of the second oil connecting passage 8.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. The double-oil-return structure of the breaking hammer cylinder comprises a middle cylinder body (2) with a piston cavity (1), and is characterized in that two oil guide channels (3) penetrating through the middle cylinder body (2) are formed in the middle cylinder body (2), plugs (4) which are fixedly connected with the middle cylinder body (2) and used for sealing the oil guide channels (3) are arranged at the positions, corresponding to the oil guide channels (3), of the two end portions of the middle cylinder body (2), an oil return loop I (5) and an oil return loop II (6) are formed in the inner peripheral wall, located at the front end portion of the piston cavity (1), of the middle cylinder body (2), an oil return loop I (5) and an oil guide channel II (7) which enables the oil guide channels to be communicated are arranged between the oil return loop I (5) and the oil guide channels (3), and an oil connecting channel II (8) which enables the oil return loop II (6) and the oil guide channels (3) to be communicated with each other, the inner peripheral wall of the middle cylinder body (2) at the rear end of the piston cavity (1) is provided with a circulating oil duct (9), and a third oil connecting duct (10) which is communicated with the circulating oil duct (9) and the two oil guide ducts (3) is arranged between the circulating oil duct (9) and the two oil guide ducts.

2. The double oil return structure of the breaking hammer cylinder body according to claim 1, wherein the plug (4) and the middle cylinder body (2) are fixedly connected through thread fit.

3. The double oil return structure of the cylinder body of the breaking hammer as claimed in claim 1, wherein the right side surface of the oil return loop two (6) is a surface with different double-section inclined angles.

4. The double oil return structure of the cylinder body of the breaking hammer as claimed in claim 1, wherein the center line of the first oil connecting channel (7) coincides with the center line of the first oil return ring channel (5).

5. The double oil return structure of the cylinder body of the breaking hammer as claimed in claim 1, wherein the second oil connecting passage (8) is arranged obliquely.

6. The double oil return structure of the cylinder body of the breaking hammer as claimed in claim 1, wherein the third oil connecting passage (10) is inclined.