CN218407480U

CN218407480U - Mining single hydraulic prop

Info

Publication number: CN218407480U
Application number: CN202223095259.8U
Authority: CN
Inventors: 邵刚; 韩宝顺
Original assignee: Zibo Taili Machinery Manufacturing Co ltd
Current assignee: Zibo Taili Machinery Manufacturing Co ltd
Priority date: 2022-11-21
Filing date: 2022-11-21
Publication date: 2023-01-31
Anticipated expiration: 2032-11-21

Abstract

The utility model relates to the field of hydraulic prop, in particular to a mining single hydraulic prop, which comprises a base, a shell, a pneumatic cavity, a communicating piece, a pneumatic tube, a threaded rod, a connecting interface, a protective cover, a locking piece, a pressure gauge, a pneumatic piece, a supporting plate and a limiting piece; one end of the air pressure pipe, which is far away from the communicating piece, is in threaded connection with the threaded rod; the utility model discloses a mode of atmospheric pressure transmission can effectually improve the control accuracy and the control stability of this device, the threaded rod through this device can be accurate the inside pressure variation of control atmospheric pressure, rotate the height that different numbers of turns can effectual control pneumatic piece rise through the record threaded rod, thereby the accurate control of this device has been guaranteed, the stability that only the latch fitting can improve this device reduces the unexpected rotation scheduling problem of threaded rod, it can inwards promote the inside atmospheric pressure of atmospheric pressure pipe to pass through UNICOM's piece to atmospheric pressure cavity inside removal to be equipped with the airtight piece on the threaded rod side, thereby the staff of being convenient for controls the altitude mixture control of this device from the side.

Description

Mining single hydraulic prop

Technical Field

The utility model relates to a hydraulic prop technical field especially relates to a mining hydraulic prop.

Background

The single hydraulic prop is a single telescopic prop which generates working resistance by utilizing liquid pressure and realizes prop lifting and unloading, is widely applied to the field of coal mining, is mainly used for supporting a coal mining working face, has supporting performance related to production safety, has important hidden danger of safety supporting all the time, has complex coal seams in China, is easy to incline during mining, and seriously influences the life safety of workers; most of the mining single hydraulic props on the market at present are not sealed well, two O-shaped rings are arranged between the piston and the movable cylinder body, the O-shaped rings are used for preventing liquid leakage between the piston and the movable cylinder body, the O-shaped rings for common connection are located below the O-shaped rings for sealing, the piston is installed upwards from the bottom of the hydraulic prop body during assembly, in order to avoid scraping the O-shaped rings for sealing by the inner wall of the movable cylinder body, the inner surface of the movable cylinder body, which is in contact with the piston, inclines outwards, the inner diameter of the bottom end of the movable cylinder body is made to be the largest, the outer diameter of the movable cylinder body is not changed, the wall thickness of the bottom end of the movable cylinder body is made to be thin, the strength is weakened, deformation and liquid leakage are easy to occur, meanwhile, the risk of scraping the O-shaped rings for sealing still exists, liquid leakage is caused, in addition, the top covers of the mining single hydraulic props at present are relatively common, only play a supporting role, no structure for preventing the toppling of the cylinder body is arranged, the production is seriously influenced, the labor intensity of workers is increased, and the safety performance of the props is reduced.

Chinese patent with publication number CN208900115U discloses a mining hydraulic prop, which comprises a base and a top cover respectively disposed at the bottom and the top of the hydraulic prop, wherein the base is provided with a cylinder body, the cylinder body is provided with a piston at the bottom, the piston and the cylinder body are provided with an O-ring for sealing and an O-ring for connection therebetween, the top cover is provided with a support plate and a support column, the top cover is internally provided with a cavity, a movable plate is disposed in the cavity, one end of the movable plate is disposed in the cavity, the other end of the movable plate is disposed outside the cavity, two opposite side surfaces of the top cover are provided with lifting lugs, the lifting lugs are provided with a pull rope, the other end of the pull rope is provided with a hook, the lifting lugs are disposed on the corresponding side surfaces of the top cover, the lifting lugs are connected with the hooks through the pull rope, the hooks are hung at a fixed position near the cavity, the hydraulic prop is effectively prevented from being toppled, the production progress is improved, the labor intensity of workers is reduced, and the safety performance of the prop is enhanced.

However, the above-mentioned known solutions have the following disadvantages: above-mentioned scheme has the operation degree of difficulty big in the middle of the in-service use process, can't accomplish accurate control to the lift height of pneumatic part simultaneously to support the precision effect has been reduced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at the technical problem who exists among the background art, the utility model provides a mining hydraulic prop, the utility model discloses a pneumatic transmission's mode can effectual improvement this device control accuracy and control stability, the threaded rod through this device can be accurate the inside pressure variation of control atmospheric pressure, rotate the height that different turns can effectual control pneumatic piece rise through the record threaded rod to guaranteed the accurate control of this device, only the stability that this device can be improved to the latch fitting reduces the unexpected rotation scheduling problem of threaded rod, be equipped with the airtight part on the threaded rod side and can inwards promote the inside atmospheric pressure of atmospheric pressure through UNICOM's piece to the inside removal of atmospheric pressure cavity, thereby the staff of being convenient for controls the altitude mixture control of this device from the side.

The utility model provides a mining single hydraulic prop, which comprises a base, a shell, a pneumatic cavity, a communicating piece, a pneumatic tube, a threaded rod, a connecting interface, a protective cover, a locking piece, a pressure gauge, a pneumatic piece, a supporting plate and a limiting piece;

the top of the base is connected with the shell; the inner wall of the top of the shell is connected with the air pressure cavity; the side surface of the air pressure cavity is connected with the communicating piece; one end of the communicating piece, which is far away from the air pressure cavity, is connected with the air pressure pipe; one end of the air pressure pipe, which is far away from the communicating piece, is in threaded connection with the threaded rod; one end of the threaded rod, which is far away from the air pressure pipe, is connected with the connecting interface; the top of the air pressure cavity is connected with the air pressure piece in a sliding way; the side surface of the air pressure cavity is connected with a pressure gauge; the top of the air pressure piece is connected with the supporting plate; the top of the supporting plate is connected with a plurality of groups of limiting pieces; the top of the air pressure pipe is connected with the protective cover; the top of the air pressure pipe is rotationally connected with the locking piece; the locking piece is positioned under the protective cover.

Preferably, the bottom of the base is provided with a plurality of groups of fixing threaded holes which are distributed around the bottom of the base.

Preferably, the side surface of the threaded rod is provided with an airtight piece, and the airtight piece is in sliding connection with the inner wall of the air pressure pipe.

Preferably, the side surface of the pneumatic tube is provided with a threaded piece, and the threaded piece is in threaded connection with the threaded rod.

Preferably, a through hole is formed in the side face of the air pressure pipe, a rotary damping piece is arranged at the bottom of the locking piece and is in rotary damping connection with the side face of the threaded rod, a control piece is arranged at the top of the locking piece, and the control piece is in control connection with the rotary damping piece.

Preferably, the communicating piece is internally provided with filling liquid, and the filling liquid flows with the pneumatic tube and the inside of the pneumatic cavity.

Preferably, the top of the limiting part is provided with a wear-resistant layer.

Preferably, a pressure sensor is arranged in the air pressure cavity and is in communication connection with the pressure gauge.

The above technical scheme of the utility model has following profitable technological effect:

the utility model discloses a mode of atmospheric pressure transmission can effectually improve the control accuracy and the control stability of this device, the threaded rod through this device can be accurate the inside pressure variation of control atmospheric pressure pipe, rotate the height that different numbers of turns can effectual control pneumatic piece rise through the record threaded rod, thereby the accurate control of this device has been guaranteed, the stability that only the latch fitting can improve this device reduces the unexpected rotation scheduling problem of threaded rod, it can inwards promote the inside atmospheric pressure of atmospheric pressure pipe to pass through UNICOM's piece to atmospheric pressure cavity inside removal to be equipped with the air seal on the threaded rod side, thereby the staff of being convenient for controls the altitude mixture control of this device from the side, the manometer through the side can effectually improve the atmospheric pressure stability of this device, thereby the safety in utilization of this device has been improved.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of a mining single hydraulic prop according to the present invention;

fig. 2 is a schematic structural diagram of a base in a mining single hydraulic prop provided by the present invention;

FIG. 3 is a side view of a single hydraulic prop for mining according to the present invention;

reference numerals: 1. a base; 2. a housing; 3. an air pressure cavity; 4. a communicating member; 5. a pneumatic tube; 6. a threaded rod; 7. connecting an interface; 8. a protective cover; 9. a lock stopping member; 10. a pressure gauge; 11. a pneumatic member; 12. a support plate; 13. and a limiting member.

Detailed Description

Example one

As shown in fig. 1-3, the utility model provides a mining single hydraulic prop, which comprises a base 1, a shell 2, a pneumatic cavity 3, a communicating member 4, a pneumatic tube 5, a threaded rod 6, a connecting interface 7, a protective cover 8, a locking member 9, a pressure gauge 10, a pneumatic member 11, a support plate 12 and a limiting member 13;

the top of the base 1 is connected with the shell 2; the inner wall of the top of the shell 2 is connected with the air pressure cavity 3; the side surface of the air pressure cavity 3 is connected with the communicating piece 4; one end of the communicating piece 4 far away from the air pressure cavity 3 is connected with the air pressure pipe 5; one end of the pneumatic tube 5 far away from the communicating piece 4 is in threaded connection with the threaded rod 6; one end of the threaded rod 6, which is far away from the air pressure pipe 5, is connected with a connecting interface 7; the top of the air pressure cavity 3 is connected with an air pressure piece 11 in a sliding way; the side surface of the air pressure cavity 3 is connected with a pressure gauge 10; the top of the pneumatic part 11 is connected with a support plate 12; the top of the supporting plate 12 is connected with a plurality of groups of limiting pieces 13; the top of the air pressure pipe 5 is connected with a protective cover 8; the top of the air pressure pipe 5 is rotationally connected with the locking piece 9; the locking piece 9 is positioned right below the protective cover 8; a plurality of groups of fixing threaded holes are arranged at the bottom of the base 1 and distributed around the bottom of the base 1; the side surface of the threaded rod 6 is provided with an airtight piece which is connected with the inner wall of the pneumatic tube 5 in a sliding way; the side surface of the air pressure pipe 5 is provided with a threaded piece, and the threaded piece is in threaded connection with the threaded rod 6; the inside of the communicating piece 4 is provided with filling liquid which flows with the inside of the pneumatic tube 5 and the pneumatic cavity 3; the top of the limiting piece 13 is provided with a wear-resistant layer; a pressure sensor is arranged in the air pressure cavity 3 and is in communication connection with a pressure gauge 10.

In this embodiment, can effectual improvement to the control accuracy of pneumatic hydraulic support post and the safety and stability of use through this device, when this device is in operating condition, thereby can realize the lift height of this device of accurate control through being connected interface 7 and outside rotation motor, can reduce the transmission hysteresis nature that gas compression leads to in the middle of the pressure transmission process through the inside filling liquid at UNICOM's piece 4, thereby make the regulating effect more timely directly perceived, can effectual improvement this device's support effect stability through the combination of backup pad 12 with locating part 13.

Example two

As shown in fig. 2-3, the utility model provides a mining hydraulic prop compares in embodiment one, in this embodiment, is equipped with the through-hole on the 5 sides of pneumatic tube, is equipped with on the 9 bottoms of lock-stopping piece and rotates damping piece, rotates damping piece and is connected with the 6 sides rotation damping of threaded rod, is equipped with the control on the lock-stopping piece 9 top, control and rotation damping piece control connection.

The utility model discloses an in the embodiment, the structure of rotating the damping piece can reduce the long-time operating pressure of airtight piece to the support stability of this device has been guaranteed.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited thereto, and various changes can be made without departing from the gist of the present invention within the scope of knowledge possessed by those skilled in the art.

Claims

1. A mining single hydraulic prop is characterized by comprising a base (1), a shell (2), a pneumatic cavity (3), a communicating piece (4), a pneumatic tube (5), a threaded rod (6), a connecting interface (7), a protective cover (8), a locking piece (9), a pressure gauge (10), a pneumatic piece (11), a supporting plate (12) and a limiting piece (13);

the top of the base (1) is connected with the shell (2); the inner wall of the top of the shell (2) is connected with the air pressure cavity (3); the side surface of the air pressure cavity (3) is connected with the communicating piece (4); one end of the communicating piece (4) far away from the air pressure cavity (3) is connected with the air pressure pipe (5); one end of the air pressure pipe (5) far away from the communicating piece (4) is in threaded connection with the threaded rod (6); one end of the threaded rod (6) far away from the air pressure pipe (5) is connected with the connecting interface (7); the top of the air pressure cavity (3) is connected with an air pressure piece (11) in a sliding way; the side surface of the air pressure cavity (3) is connected with a pressure gauge (10); the top of the pneumatic part (11) is connected with the supporting plate (12); the top of the supporting plate (12) is connected with a plurality of groups of limiting pieces (13); the top of the air pressure pipe (5) is connected with the protective cover (8); the top of the air pressure pipe (5) is rotationally connected with the locking piece (9); the locking piece (9) is positioned under the protective cover (8).

2. The mining single hydraulic prop according to claim 1, characterized in that a plurality of groups of fixing threaded holes are arranged on the bottom of the base (1), and the plurality of groups of fixing threaded holes are distributed around the bottom of the base (1).

3. The mining single hydraulic prop according to claim 1, characterized in that an air-tight member is arranged on the side surface of the threaded rod (6), and the air-tight member is in sliding connection with the inner wall of the pneumatic tube (5).

4. The mining single hydraulic prop according to claim 1, characterized in that a threaded member is provided on the side of the pneumatic tube (5), and the threaded member is in threaded connection with the threaded rod (6).

5. The mining single hydraulic prop according to claim 1, characterized in that a through hole is formed in the side surface of the pneumatic tube (5), a rotary damping member is arranged on the bottom of the locking member (9), the rotary damping member is connected with the side surface of the threaded rod (6) in a rotary damping manner, a control member is arranged on the top of the locking member (9), and the control member is connected with the rotary damping member in a control manner.

6. The mining single hydraulic prop according to claim 1, characterized in that the communicating piece (4) is internally provided with a filling liquid, and the filling liquid flows with the pneumatic tube (5) and the inside of the pneumatic cavity (3).

7. A mining monoblock hydraulic prop according to claim 1, characterized in that the top of the retaining member (13) is provided with a wear layer.

8. The mining single hydraulic prop according to claim 1, characterized in that a pressure sensor is arranged inside the pneumatic cavity (3), and the pressure sensor is in communication connection with a pressure gauge (10).