CN215109806U

CN215109806U - Welded piston oil cylinder with good sealing performance

Info

Publication number: CN215109806U
Application number: CN202121222727.6U
Authority: CN
Inventors: 徐丽霞; 陶俊辉; 赵玉龙; 王建军; 李亚军
Original assignee: Foshan Man Yi Machinery Manufacturing Co ltd
Current assignee: Foshan Man Yi Machinery Manufacturing Co ltd
Priority date: 2021-06-02
Filing date: 2021-06-02
Publication date: 2021-12-10
Anticipated expiration: 2031-06-02

Abstract

The utility model provides a welding piston oil cylinder with good sealing performance; comprises a cylinder body; the inside of cylinder body is pegged graft and is had the hydraulic stem, and the one end fixedly connected with end cover of cylinder body, and the inside of end cover is opened has the constant head tank that is the equidistance and distributes, and the inside joint of constant head tank has the sealing ring, and the one end integrated into one piece of hydraulic stem has the dead lever, and the piston has been cup jointed to the outside of dead lever, and integrated into one piece has the oil-sealing ring that is the equidistance and distributes on the side outer wall of piston, and the inside of oil-sealing ring is pegged graft and is had the backing sheet. The utility model discloses a piston with a plurality of oil seal rings seals the hydraulic stem, and a plurality of oil seal rings and cylinder body contact each other form a plurality of oil groove, cut off the hydraulic oil of cylinder body both sides through oil groove and oil seal ring cooperation, can improve sealing performance effectively on the one hand, and on the other hand also can reduce coefficient of friction effectively, prevents loss of pressure.

Description

Welded piston oil cylinder with good sealing performance

Technical Field

The utility model relates to a piston cylinder technical field especially relates to a welding piston cylinder that leakproofness is good.

Background

The piston cylinder is also called a hydraulic cylinder and is a hydraulic actuating element which converts hydraulic energy into mechanical energy and makes linear reciprocating motion. It has simple structure and reliable operation. When it is used to implement reciprocating motion, it can omit speed-reducing device, and has no transmission gap, and its motion is stable, so that it can be extensively used in various mechanical hydraulic systems.

The piston of the hydraulic oil cylinder and the cylinder body are required to be arranged in a sealing mode, if the sealing is not tight, the oil leakage phenomenon can often occur, the quality of the hydraulic oil cylinder is reduced, the work of equipment is influenced, the existing oil cylinder piston is generally of a cylindrical structure, the side face of the piston is in complete contact with the inner wall of the side face of the cylinder body, the sealing performance can be improved, the friction coefficient can be increased, and therefore the power is reduced. Therefore, it is necessary to design a welded piston cylinder with good sealing performance to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the not enough of prior art, the adaptation reality needs provide a welding piston hydro-cylinder that the leakproofness is good.

In order to realize the utility model discloses a purpose, the utility model discloses the technical scheme who adopts does:

a welded piston oil cylinder with good sealing performance is designed, and comprises a cylinder body; the utility model discloses a hydraulic cylinder, including cylinder body, end cover, piston, hydraulic stem, piston, oil seal ring, hydraulic stem, piston, hydraulic stem, piston, oil seal ring, hydraulic stem, piston, oil seal ring, piston, oil seal ring, piston, oil seal ring, support sheet, and support sheet, and support sheet, and support sheet, and support sheet, and support sheet, and support sheet, and support sheet, and support sheet, and support sheet, and support sheet.

Furthermore, a connecting flange is integrally formed on the outer wall of one end, close to each other, of the end cover and the cylinder body, a connecting screw rod is connected to the inner thread of the connecting flange, and the end cover and the cylinder body are fixedly connected through the connecting flange and the connecting screw rod.

Furthermore, two the joint has sealed the pad between the flange, integrated into one piece has the blotter on the outer wall of one side of sealed pad, and the inside of blotter is opened there is the cushion chamber.

Furthermore, first stationary blade and second stationary blade have been cup jointed to the outside of dead lever, and first stationary blade and second stationary blade are located the both sides of piston respectively, it has the protection pad to bond on the piston was kept away from to the second stationary blade one side outer wall.

Furthermore, a first oil cavity is preset in the cylinder body, a first oil nozzle is integrally formed on the outer wall of one side of the cylinder body, and the first oil nozzle is communicated with the first oil cavity.

Furthermore, a second oil cavity is preset in the end cover, a second oil nozzle is integrally formed on the outer wall of one side of the end cover, and the second oil nozzle is communicated with the second oil cavity.

Furthermore, one end of the hydraulic rod, which is far away from the cylinder body, is in threaded connection with an end head, and a connecting ring is integrally formed on the outer wall of one side of the end head.

The beneficial effects of the utility model reside in that:

1. its structural design of this design is novel, and is simple compact, adopts the piston that has a plurality of oil seal rings to seal the hydraulic stem, and a plurality of oil seal rings and cylinder body contact each other form a plurality of oil groove, cut off the hydraulic oil of cylinder body both sides through oil groove and oil seal ring cooperation, can improve sealing performance effectively on the one hand, and on the other hand also can reduce coefficient of friction effectively, prevents loss of pressure.

2. Its structural design of this design is novel, and is simple compact, adopts first stationary blade and second stationary blade to fix the both sides of piston to support oil-sealed ring through the backing sheet, can prevent that the in-process piston at reciprocating motion from taking place deformation, thereby prolonged the life of piston, increased the reliability of hydro-cylinder.

3. Its structural design of this design is novel, and is simple compact, adopts blotter and protection pad to protect the both sides of piston, can prevent to take place vibrations and noise when the both ends of piston motion on the one hand, and on the other hand also can protect the inner wall of piston and cylinder body, prevents that the inner wall of piston and cylinder body is impaired.

Drawings

FIG. 1 is a schematic structural diagram of the present design;

FIG. 2 is a structural cross-sectional view of the present design;

FIG. 3 is a partial enlarged view of structure A of the present design;

fig. 4 is a sectional view of the piston structure of the design.

In the figure:

1. a cylinder body; 2. an end cap; 3. a hydraulic lever; 4. a tip; 5. a connecting ring; 6. a first oil chamber; 7. a first oil nozzle; 8. A second oil chamber; 9. a second oil nozzle; 10. positioning a groove; 11. a seal ring; 12. a connecting flange; 13. connecting a screw rod; 14. A gasket; 15. a cushion pad; 16. a buffer chamber; 17. fixing the rod; 18. a first fixing sheet; 19. a second fixing sheet; 20. a protective pad; 22. a piston; 23. an oil seal ring; 24. a support sheet.

Detailed Description

The invention will be further described with reference to the following figures and examples:

example 1: a welded piston cylinder with good sealing performance is disclosed, and is shown in figures 1 to 4.

The welding piston oil cylinder with good sealing performance comprises a cylinder body 1; the inside of cylinder body 1 is pegged graft and is had hydraulic stem 3, and the one end fixedly connected with end cover 2 of cylinder body 1, the inside of end cover 2 is opened has constant head tank 10 that is the equidistance and distributes, and the inside joint of constant head tank 10 has sealing ring 11, sealing ring 11 is used for the clearance between end cover 2 and the hydraulic stem 3, the one end integrated into one piece of hydraulic stem 3 has dead lever 17, and piston 22 has been cup jointed to dead lever 17's outside, integrated into one piece has the oil-sealed ring 23 that is the equidistance and distributes on piston 22's the side outer wall, oil-sealed ring 23 is used for playing sealed effect, and oil-sealed ring 23's inside is pegged graft and is had backing sheet 24, backing sheet 24 is used for fixing oil-sealed ring 23, prevent oil-sealed ring 23 and take place deformation.

Furthermore, a connecting flange 12 is integrally formed on the outer wall of one end, close to each other, of the end cover 2 and the cylinder body 1, a connecting screw rod 13 is connected to the inner thread of the connecting flange 12, and the end cover 2 and the cylinder body 1 are fixedly connected through the connecting flange 12 and the connecting screw rod 13.

Further, the joint has sealed the pad 14 between two flange 12, and sealed pad 14 is used for sealing up between two flange 12, and integrated into one piece has blotter 15 on the outer wall of one side of sealed pad 14, and the inside of blotter 15 is opened there is cushion chamber 16, and cushion chamber 16 is used for playing the effect of buffering.

Further, first stationary blade 18 and second stationary blade 19 have been cup jointed to the outside of dead lever 17, first stationary blade 18 and second stationary blade 19 are used for protecting piston 22, prevent that piston 22 from taking place the deformation, and first stationary blade 18 and second stationary blade 19 are located piston 22's both sides respectively, it has protection pad 20 to bond on one side outer wall that piston 22 was kept away from to second stationary blade 19, protection pad 20 is used for protecting piston 22, prevent that piston 22 and cylinder body 1 from taking place the striking.

Furthermore, a first oil cavity 6 is preset in the cylinder body 1, a first oil nozzle 7 is integrally formed on the outer wall of one side of the cylinder body 1, the first oil nozzle 7 is used for being connected with an external oil pipe, and the first oil nozzle 7 is communicated with the first oil cavity 6.

Further, a second oil chamber 8 is preset in the end cover 2, a second oil nozzle 9 is integrally formed on the outer wall of one side of the end cover 2, the second oil nozzle 9 is used for being connected with an external oil pipe, and the second oil nozzle 9 is communicated with the second oil chamber 8.

Furthermore, one end of the hydraulic rod 3, which is far away from the cylinder body 1, is in threaded connection with an end 4, a connecting ring 5 is integrally formed on the outer wall of one side of the end 4, and the connecting ring 5 is used for being conveniently connected with an external device.

The working principle is as follows: when the hydraulic rod is used, an operator connects the first oil nozzle 7 and the second oil nozzle 9 with an external oil pipe, when external hydraulic oil enters the first oil chamber 6 through the first oil nozzle 7, the piston 22 can be extruded to one side of the second oil nozzle 9 by the hydraulic oil, so that the hydraulic rod 3 extends out, and when the external hydraulic oil enters the second oil chamber 8 through the second oil nozzle 9, the piston 22 can be extruded to one side of the first oil nozzle 7 by the hydraulic oil, so that the hydraulic rod 3 retracts; when hydraulic oil contacts with piston 22, hydraulic oil is with pressure effect on the oil-sealed ring 23 in the outside, and hydraulic oil can promote piston 22 to move this moment, and when hydraulic oil permeated to the inside of the oil-sealed ring 23 in the outside, hydraulic oil filled the gap between two oil-sealed rings 23 completely, and pressure was used in two oil-sealed rings 23 this moment, and hydraulic oil can promote piston 22 to move, analogizes in proper order, and hydraulic oil is static between two oil-sealed rings 23 for a long time, can become thick to play the effect that prevents hydraulic oil and get into.

The embodiment of the present invention discloses a preferred embodiment, but not limited thereto, and those skilled in the art can easily understand the spirit of the present invention according to the above embodiment, and make different extensions and changes, but do not depart from the spirit of the present invention, all of which are within the protection scope of the present invention.

Claims

1. A welded piston oil cylinder with good sealing performance comprises a cylinder body (1); the method is characterized in that: the inside of cylinder body (1) is pegged graft and is had hydraulic stem (3), and one end fixedly connected with end cover (2) of cylinder body (1), open the inside of end cover (2) has constant head tank (10) that are the equidistance and distribute, and the inside joint of constant head tank (10) has sealing ring (11), the one end integrated into one piece of hydraulic stem (3) has dead lever (17), and piston (22) have been cup jointed to the outside of dead lever (17), integrated into one piece has oil seal ring (23) that are the equidistance and distribute on the side outer wall of piston (22), and the inside of oil seal ring (23) is pegged graft and is had backing sheet (24).

2. The welded piston cylinder of claim 1 having good sealing properties, wherein: the end cover (2) and the cylinder body (1) are close to each other, a connecting flange (12) is integrally formed on the outer wall of one end, a connecting screw rod (13) is connected to the inner thread of the connecting flange (12), and the end cover (2) and the cylinder body (1) are fixedly connected through the connecting flange (12) and the connecting screw rod (13).

3. The welded piston cylinder with good sealing performance as claimed in claim 2, wherein: two the joint has sealed pad (14) between flange (12), integrated into one piece has blotter (15) on the one side outer wall of sealed pad (14), and the inside of blotter (15) is opened there is cushion chamber (16).

4. The welded piston cylinder of claim 1 having good sealing properties, wherein: the outside of dead lever (17) has cup jointed first stationary blade (18) and second stationary blade (19), and first stationary blade (18) and second stationary blade (19) are located the both sides of piston (22) respectively, it has protection pad (20) to bond on one side outer wall that piston (22) were kept away from in second stationary blade (19).

5. The welded piston cylinder of claim 1 having good sealing properties, wherein: a first oil cavity (6) is preset in the cylinder body (1), a first oil nozzle (7) is integrally formed on the outer wall of one side of the cylinder body (1), and the first oil nozzle (7) is communicated with the first oil cavity (6).

6. The welded piston cylinder of claim 1 having good sealing properties, wherein: a second oil cavity (8) is preset in the end cover (2), a second oil nozzle (9) is integrally formed on the outer wall of one side of the end cover (2), and the second oil nozzle (9) is communicated with the second oil cavity (8).

7. The welded piston cylinder of claim 1 having good sealing properties, wherein: one end of the hydraulic rod (3) far away from the cylinder body (1) is in threaded connection with an end head (4), and a connecting ring (5) is integrally formed on the outer wall of one side of the end head (4).