CN213511841U

CN213511841U - Oil buffer that leakproofness is good

Info

Publication number: CN213511841U
Application number: CN202022103725.7U
Authority: CN
Inventors: 朱朝平
Original assignee: Zhenjiang Chaoyang Electromechanical Technology Co ltd
Current assignee: Zhenjiang Chaoyang Electromechanical Technology Co ltd
Priority date: 2020-09-23
Filing date: 2020-09-23
Publication date: 2021-06-22
Anticipated expiration: 2030-09-23

Abstract

The utility model discloses an oil buffer with good sealing performance, which comprises an outer pipe and an inner pipe fixedly arranged in the outer pipe, wherein a piston rod is arranged on one side wall of the outer pipe in a penetrating manner, a leakproof mechanism is arranged at the joint of the piston rod and the outer pipe, a ram is fixedly arranged at one end of the piston rod, which is far away from the outer pipe, a piston is arranged between the inner side walls of the inner pipe in a sliding manner, a plurality of oil through holes are further arranged on one side wall of the inner pipe, an oil return hole is arranged in the piston in a penetrating manner, a check valve is fixedly arranged in the oil return hole, a first spring is fixedly arranged between the piston and the bottom wall of the inner pipe, a pressure storage sponge is fixedly arranged on the inner side wall; utility model has realized the good sealed of hydraulic buffer piston rod and outer tube junction, prevent that inside oil from flowing from the junction and leading to the unable normal work of buffer.

Description

Oil buffer that leakproofness is good

Technical Field

The utility model relates to an oil buffer technical field especially relates to an oil buffer that leakproofness is good.

Background

The hydraulic buffer is used for reducing vibration and noise in the automatic mechanical operation, converting the kinetic energy generated by the moving object into heat energy and releasing the heat energy into the atmosphere, effectively stopping the object in balance in the action, reducing vibration and noise in the automatic mechanical operation, converting the kinetic energy generated by the moving object into heat energy and releasing the heat energy into the atmosphere, and effectively stopping the object in balance in the action; the efficiency of the machine is improved, the productivity is increased, the service life of the machine is prolonged, the maintenance cost is reduced, the mechanical action is stable, the product quality is maintained, and the operation of the machine is safer and avoids accidents;

when the existing oil buffer works, the joint of the piston rod and the outer pipe is easy to leak oil of the oil buffer due to the fact that the piston rod continuously stretches in and out, and after the existing oil buffer is used for a long time, oil leakage is often caused after the oil seal in the traditional oil buffer is continuously rubbed, so that the oil buffer cannot normally work, and the oil buffer with good sealing performance is provided.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a good hydraulic buffer of leakproofness has realized the good sealing to hydraulic buffer piston rod and outer union coupling department, prevents that inside oil from flowing from the junction and leading to the unable normal work of buffer.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a good oil buffer of leakproofness, includes outer tube and the fixed inner tube that sets up in the outer tube, one side lateral wall of outer tube runs through and is equipped with the piston rod, the handing-over department of piston rod and outer tube is equipped with leak protection mechanism, the fixed head that hits that is equipped with of one end that the outer tube was kept away from to the piston rod, it is equipped with the piston to slide between the inside wall of inner tube, still be equipped with a plurality of oil holes on one side lateral wall of inner tube, it is equipped with the oil gallery to run through in the piston, the oil gallery internal fixation is equipped with the check valve, the fixed first spring that is equipped with between the diapire of piston and inner tube, the fixed pressure storage sponge that is equipped.

The utility model discloses the technical scheme who further injects is:

preferably, leak protection mechanism is including the fixed oil blanket that sets up on the outer tube inner wall, the inside wall and the piston rod of oil blanket closely laminate and set up, it is equipped with the recess to go back the concave on the outer wall of outer tube, closely laminate in the recess and be equipped with the rubber ring, the fixed diaphragm that is equipped with on the lateral wall of rubber ring, the fixed second spring that is equipped with between in the lateral wall of diaphragm and outer tube, just the second spring is in tensile state all the time, the piston rod still fixedly is equipped with rubber on the one end lateral wall of outer tube and pushes away the ring, rubber pushes away ring and recess phase-match setting.

Preferably, the head is sleeved with a rubber cushion, and the rubber cushion is made of natural rubber.

Preferably, the piston rod and the piston are integrally formed, and protective paint is coated on the surface of the piston rod.

Preferably, the side wall of the rubber push ring is obliquely arranged, the cross sectional area of the upper end of the rubber push ring is larger than that of the lower end of the rubber push ring, and the cross sectional area of the lower end of the rubber push ring is matched with the size of the groove.

The utility model has the advantages that:

the utility model discloses a mutually supporting of oil seal board, recess and rubber ring for oil buffer and external world have two-layer seal, make it compare traditional sealed effect better, guaranteed oil buffer's normal course of operation, simultaneously under the mutually supporting of diaphragm and second spring, make the second spring have a pulling force towards oil buffer body to the rubber ring all the time, guarantee that the rubber ring is in the recess all the time, prevent that it from producing the condition emergence that drops; through mutually supporting of recess and rubber throw-out collar for this structure is at the during operation, reciprocating of piston rod can drive the continuous business turn over recess of rubber throw-out collar, when getting into the recess, extrudees the rubber ring, makes it closely laminate in the recess all the time, further prevents that the rubber ring from droing, makes its leakproofness obtain guaranteeing.

Drawings

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

FIG. 2 is a schematic view of the structure at A in FIG. 1;

in the figure: the rubber piston comprises an outer tube 1, an inner tube 2, a piston rod 3, a ram 4, a piston 5, an oil through hole 6, an oil return hole 7, a check valve 8, a first spring 9, a pressure accumulation sponge 10, an oil seal plate 11, a groove 12, a rubber ring 13, a transverse plate 14, a second spring 15 and a rubber push ring 16.

Detailed Description

The hydraulic buffer with good sealing performance provided in this embodiment is as shown in fig. 1-2, and includes an outer tube 1 and an inner tube 2 fixedly disposed in the outer tube 1, a piston rod 3 penetrates through a side wall of one side of the outer tube 1, a leakage-proof mechanism is disposed at a joint of the piston rod 3 and the outer tube 1, the leakage-proof mechanism includes an oil seal plate 11 fixedly disposed on an inner wall of the outer tube 1, an inner side wall of the oil seal plate 11 is closely attached to the piston rod 3, a groove 12 is further concavely disposed on an outer wall of the outer tube 1, a rubber ring 13 is closely attached to the groove 12, a transverse plate 14 is fixedly disposed on a side wall of the rubber ring 13, a second spring 15 is fixedly disposed between the transverse plate 14 and the inner side wall of the outer tube 1, the second spring 15 is always in a stretching state, a rubber push ring 16 is further fixedly disposed on a side wall of one end of the piston rod 3 outside the outer tube 1, a side wall of the, the cross section area of the lower end of the rubber push ring 16 is matched with the size of the groove 12, so that when the rubber push ring 16 enters the groove 12, the upper end of the rubber push ring is tightly attached to the side wall of the groove 12, the internal oil is prevented from being extruded under the action of pressure when the piston rod 3 moves towards the outer pipe 1, the sealing performance of the device is further ensured, the rubber push ring 16 is matched with the groove 12, one end of the piston rod 3, which is far away from the outer pipe 1, is fixedly provided with a collision head 4, the collision head 4 is sleeved with a rubber cushion, the rubber cushion is made of natural rubber, the collision head 4 is effectively protected, the surface of the collision head is prevented from being damaged, a piston 5 and a piston 5 are arranged between the inner side walls of the inner pipe 2 in a sliding mode, the piston rod 3 and the piston 5 are integrally formed, and the surface of the piston rod 3 is coated with protective paint, so that the, the oil buffer is characterized in that a plurality of oil through holes 6 are further formed in the side wall of one side of the inner pipe 2, an oil return hole 7 penetrates through the piston 5, a check valve 8 is fixedly arranged in the oil return hole 7, a first spring 9 is fixedly arranged between the piston 5 and the bottom wall of the inner pipe 2, a pressure accumulation sponge 10 is fixedly arranged on the inner side wall of the outer pipe 1, the pressure accumulation sponge 10 is arranged around the piston rod 3, the oil seal plate 11, the groove 12 and the rubber ring 13 are mutually matched to enable the oil buffer to be sealed with the outside in two layers, the sealing effect is better compared with the traditional sealing effect, the normal working process of the oil buffer is guaranteed, meanwhile, under the mutual matching of the transverse plate 14 and the second spring 15, the second spring 15 always has a pulling force towards the oil buffer body on the rubber ring 13, the rubber ring 13 is always ensured to be in the groove 12, the falling of the rubber ring is prevented, and the groove 12 and the, make this structure during operation, reciprocating of piston rod 3 can drive rubber and push away the continuous business turn over recess 12 of ring 16, when getting into recess 12, extrudees rubber ring 13, makes it closely laminate all the time in recess 12, further prevents that rubber ring 13 from droing, makes its leakproofness obtain guaranteeing.

When the embodiment works, after the ram 4 is impacted, the piston rod 3 moves into the hydraulic buffer and pushes the piston 5 to move into the inner tube 2, so that the first spring 9 is compressed, oil at the lower end of the piston 5 is extruded out from the oil through hole 6, after the buffering is finished, the piston rod 3 is reset under the action of the first spring 9, meanwhile, the oil in the hydraulic buffer enters the inner tube 2 again from the oil return hole 7 through the check valve 8, when the piston rod 3 moves into the hydraulic buffer, the rubber push ring 16 moves synchronously towards the hydraulic buffer and is tightly attached to the groove 12 when entering the groove 12, the rubber ring 13 is pushed to be more tightly connected with the groove 12, the sealing performance is good, and when pressure is generated in the hydraulic buffer, the air pressure in the hydraulic buffer is increased when the piston 5 moves, the provision of the rubber push ring 16 further prevents the oil inside thereof from being pushed out of the oil buffer by the pressure.

In addition to the above embodiments, the present invention may have other embodiments; all the technical solutions formed by adopting equivalent substitutions or equivalent transformations fall within the protection scope claimed by the present invention.

Claims

1. An oil buffer with good sealing performance comprises an outer pipe (1) and an inner pipe (2) fixedly arranged in the outer pipe (1), and is characterized in that a piston rod (3) penetrates through the side wall of one side of the outer pipe (1), a leakage-proof mechanism is arranged at the joint of the piston rod (3) and the outer pipe (1), a collision head (4) is fixedly arranged at one end, far away from the outer pipe (1), of the piston rod (3), a piston (5) is arranged between the inner side walls of the inner pipe (2) in a sliding mode, a plurality of oil through holes (6) are further arranged on the side wall of one side of the inner pipe (2), an oil return hole (7) penetrates through the piston (5), a check valve (8) is fixedly arranged in the oil return hole (7), a first spring (9) is fixedly arranged between the bottom walls of the piston (5) and the inner pipe (2), a pressure storage sponge (10) is fixedly arranged on the inner side, the pressure-accumulating sponge (10) is arranged around the piston rod (3).

2. A hydraulic shock absorber having excellent sealability as claimed in claim 1, the leakage-proof mechanism comprises an oil seal plate (11) fixedly arranged on the inner wall of the outer tube (1), the inner side wall of the oil seal plate (11) is tightly attached to the piston rod (3), the outer wall of the outer tube (1) is concavely provided with a groove (12), a rubber ring (13) is tightly attached in the groove (12), a transverse plate (14) is fixedly arranged on the side wall of the rubber ring (13), a second spring (15) is fixedly arranged between the transverse plate (14) and the inner side wall of the outer tube (1), and the second spring (15) is always in a stretching state, a rubber push ring (16) is further fixedly arranged on the side wall of one end of the piston rod (3) outside the outer tube (1), and the rubber push ring (16) is matched with the groove (12).

3. The hydraulic shock absorber with good sealing performance as claimed in claim 1, wherein the ram (4) is sleeved with a rubber cushion, and the rubber cushion is made of natural rubber.

4. The hydraulic shock absorber with good sealing performance as claimed in claim 1, wherein the piston rod (3) and the piston (5) are integrally formed, and the surface of the piston rod (3) is coated with a protective paint.

5. A good-sealing oil buffer as claimed in claim 2, characterized in that the side wall of the rubber push ring (16) is inclined, the cross-sectional area of the upper end of the rubber push ring (16) is larger than that of the lower end, and the cross-sectional area of the lower end of the rubber push ring (16) is matched with the size of the groove (12).