CN110107637B

CN110107637B - Oil seal assembly of oil pressure shock absorber

Info

Publication number: CN110107637B
Application number: CN201910388142.2A
Authority: CN
Inventors: 金传辉; 金菘; 乔翔宇; 陈坚
Original assignee: Yangzhou Huajiao Rail Transit Technology Co ltd
Current assignee: Yangzhou Huajiao Rail Transit Technology Co ltd
Priority date: 2019-05-10
Filing date: 2019-05-10
Publication date: 2020-11-20
Anticipated expiration: 2039-05-10
Also published as: CN110107637A

Abstract

The invention relates to the technical field of oil pressure shock absorbers and discloses an oil seal assembly of an oil pressure shock absorber, which comprises a cylinder body, an inner sealing pipe, a piston rod, a fixing sleeve, a first sealing sleeve and an inner pipe, wherein the inner part of the inner sealing pipe is movably sleeved with the side surface of the top of the cylinder body, the side surface of the piston rod is inserted into the cylinder body, the outer surface of the fixing sleeve is fixedly connected with the inner part of the cylinder body, and the outer surface of the first sealing sleeve is fixedly connected with the inner wall of the fixing sleeve. This oil seal subassembly of oil hydraulic shock absorber through having set up interior sealed pipe and external seal pipe, can carry out twice to the inside of device and seal, then through being provided with first seal cover, second seal cover and third seal cover for when the device is stretching out and drawing back from top to bottom, can prevent directly to take place the friction between the inside metal of device, make the sealed effect of device reach better, solved some current devices life when longer sealed effect not fine problem.

Description

Oil seal assembly of oil pressure shock absorber

Technical Field

The invention relates to the technical field of oil pressure shock absorbers, in particular to an oil seal assembly of an oil pressure shock absorber.

Background

The hydraulic shock absorber achieves the purpose of shock absorption by forming hydraulic damping force through stretching and compressing a piston rod to reciprocate, has good shock absorption damping effect and flexible shock absorption effect, and is a key component for improving the stability, comfort and safety of high-speed running of locomotives and vehicles. Because the piston rod needs to frequently reciprocate, how to effectively seal the cylinder of the oil pressure damper and prevent the damper oil from being exposed becomes an important problem influencing the use effect of the oil pressure damper, and therefore an oil seal assembly of the oil pressure damper is needed to solve the problem.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides the oil seal assembly of the oil pressure shock absorber, which has the advantage of effectively sealing the cylinder of the oil pressure shock absorber and solves the problem that the sealing effect in the cylinder of some existing oil pressure shock absorbers is not good when the oil pressure shock absorbers are used.

The invention provides the following technical scheme: an oil seal assembly of an oil pressure shock absorber comprises a cylinder body, an inner sealing pipe, a piston rod, a fixing sleeve, a first sealing sleeve and an inner pipe, wherein the inside of the inner sealing pipe is movably sleeved with the side surface of the top of the cylinder body, the side surface of the piston rod is inserted into the cylinder body, the outer surface of the fixing sleeve is fixedly connected with the inside of the cylinder body, the outer surface of the first sealing sleeve is fixedly connected with the inner wall of the fixing sleeve, the side surface of the piston rod is movably inserted into the inside of the first sealing sleeve, the inner pipe is fixedly connected with the inside of the cylinder body, the inside of the inner pipe comprises a telescopic spring, the top end of the telescopic spring is fixedly connected with the bottom end of the piston rod, the bottom end of the telescopic spring is fixedly connected with the inner bottom wall of the inner pipe, the inside of the inner sealing pipe comprises a second sealing sleeve, the inner wall of the second seal sleeve is movably connected with the outer surface of the cylinder body, the cylinder body comprises a pressure sensor, two baffles and two supporting mechanisms, the bottom of the pressure sensor is fixedly connected with the inside of the cylinder body, the two baffles are fixedly connected with the left side and the right side of the inner top wall of the inner seal tube respectively, and the two supporting mechanisms are located below the two baffles respectively.

Preferably, the inside of cylinder body is including the sealing washer, the inside fixed connection of surface and the cylinder body of sealing washer, the inner wall of sealing washer and the side surface activity of piston rod cup joint.

Preferably, the inner pipe comprises an oil discharge hole and an oil return hole, the oil discharge hole is located on the left side of the inner pipe, and the oil return hole is located at the top of the left side of the inner pipe.

Preferably, the inside of cylinder body is including two buffering sponges, and the surface of two buffering sponges all is connected with the inside fixed connection of cylinder body, and two buffering sponges are located the left side and the right side of piston rod respectively.

Preferably, the bottom of the cylinder body comprises an outer sealing pipe and a third sealing sleeve, the top of the outer sealing pipe is movably sleeved with the bottom of the inner sealing pipe, the outer surface of the third sealing sleeve is fixedly connected with the inner wall of the outer sealing pipe, and the inner wall of the third sealing sleeve is movably connected with the outer surface of the inner sealing pipe.

Preferably, the pressure sensor includes a pressure detection module, a data transmission module, a data processing module, a control module, an alarm device and a pressure display device, an input end of the data transmission module is electrically connected to an output end of the pressure detection module, an input end of the data processing module is electrically connected to an output end of the data transmission module, an input end of the control module is electrically connected to an output end of the data processing module, an input end of the alarm device is electrically connected to an input end of the control module, and an input end of the pressure display device is electrically connected to an input end of the data processing module.

Preferably, the cylinder body includes an oil hole in the interior thereof, and the oil hole is located at the bottom of the cylinder body.

Preferably, the supporting mechanism comprises a supporting seat, a supporting tube, a supporting plate, a supporting rod, a supporting spring and a supporting block, the bottom of the supporting seat is fixedly connected with the top of the cylinder body, the bottom of the supporting tube is fixedly connected with the top of the supporting seat, the bottom of the supporting plate is fixedly connected with the top of the supporting tube, the bottom of the supporting rod is movably inserted into the supporting tube, the inside of the supporting spring is sleeved with the side surface of the supporting rod, the bottom of the supporting block is fixedly connected with the top of the supporting rod, and the top of the supporting block is overlapped with the bottom of the baffle.

Preferably, the bottom end of the supporting spring is fixedly connected with the top of the supporting plate, and the top end of the supporting spring is fixedly connected with the bottom of the supporting block.

Compared with the prior art, the invention has the following beneficial effects:

1. this oil seal subassembly of oil hydraulic shock absorber through having set up interior sealed pipe and external seal pipe, can carry out twice to the inside of device and seal, then through being provided with first seal cover, second seal cover and third seal cover for when the device is stretching out and drawing back from top to bottom, can prevent directly to take place the friction between the inside metal of device, make the sealed effect of device reach better, solved some current devices life when longer sealed effect not fine problem.

2. This oil seal assembly of oil pressure shock absorber, through having set up pressure sensor, pressure sensor is located the inside of device, and through pressure sensor's effect, the inside oil pressure of device cylinder body can real-time supervision, when the inside oil leak that takes place of device makes the oil pressure reduce, pressure sensor can send out the signal and spread, then sends out the police dispatch newspaper, and convenient to use person takes measures effectively to handle, has reached the effect of early warning in advance.

3. This oil hydraulic shock absorber's oil blanket subassembly, through having set up supporting mechanism, supporting mechanism is located the top of cylinder body, and supporting mechanism is located the inside of interior sealed tube for interior sealed tube can carry out certain support to the interior roof of interior sealed tube when going on stretching out and drawing back from top to bottom, can cushion the top of device, prevents that the interior roof of interior sealed tube is direct to collide with the top of cylinder body and lead to the device to take place to damage.

Drawings

FIG. 1 is a cross-sectional view of the structure of the present invention;

FIG. 2 is a schematic structural view of the present invention;

FIG. 3 is an enlarged view of the structure A of the present invention 1;

fig. 4 is a schematic diagram of the internal system of the pressure sensor of the present invention.

In the figure: 1. a cylinder body; 2. an inner sealed tube; 3. a piston rod; 4. a seal ring; 5. fixing a sleeve; 6. a first seal cartridge; 7. an inner tube; 8. a tension spring; 9. an oil drain hole; 10. an oil return hole; 11. a buffer sponge; 12. a second seal cartridge; 13. an outer sealing tube; 14. a third seal cartridge; 15. a pressure sensor; 1501. a pressure detection module; 1502. a data transmission module; 1503. a data processing module; 1504. a control module; 1505. an alarm device; 1506. a pressure display device; 16. an oil filler hole; 17. a baffle plate; 1801. a supporting seat; 1802. supporting a tube; 1803. a support plate; 1804. a support bar; 1805. a support spring; 1806. and (7) a supporting block.

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, an oil seal assembly of an oil damper includes a cylinder body 1, an inner seal tube 2, a piston rod 3, a fixing sleeve 5, a first sealing sleeve 6 and an inner tube 7, wherein the inner portion of the inner seal tube 2 is movably sleeved with the side surface of the top of the cylinder body 1, the surface of the piston rod 3 can move up and down inside the inner seal tube 2, the surface of the piston rod 3 is sealed by the inner seal tube 2, then the surface of the piston rod 3 can be prevented from directly rubbing against the inner wall of the inner seal tube 2 by the action of the first sealing sleeve 6, the surface of the piston rod 3 is effectively protected, the side surface of the piston rod 3 is inserted into the cylinder body 1, the inside of the cylinder body 1 includes a seal ring 4, the outer surface of the seal ring 4 is fixedly connected with the inside of the cylinder body 1, the seal ring 4 is movably connected with the side surface of the cylinder body 1, the surface of the rigid cylinder body 1 is sealed through the action of the sealing ring 4, the inner wall of the sealing ring 4 is movably sleeved with the side surface of the piston rod 3, the outer surface of the fixing sleeve 5 is fixedly connected with the inside of the cylinder body 1, the outer surface of the first sealing sleeve 6 is fixedly connected with the inner wall of the fixing sleeve 5, the side surface of the piston rod 3 is movably inserted into the inside of the first sealing sleeve 6, the inner pipe 7 is fixedly connected with the inside of the cylinder body 1, the inside of the inner pipe 7 comprises a telescopic spring 8, the top end of the telescopic spring 8 is fixedly connected with the bottom end of the piston rod 3, the bottom end of the telescopic spring 8 is fixedly connected with the inner bottom wall of the inner pipe 7, the inside of the inner pipe 7 comprises an oil discharge hole 9 and an oil return hole 10, the oil discharge hole 9 is positioned on the left side of the inner pipe 7, the oil return hole 10 is positioned on the, the two buffer sponges 11 are respectively positioned on the left side and the right side of the piston rod 3, the inner sealing tube 2 comprises a second sealing sleeve 12, the outer surface of the second sealing sleeve 12 is fixedly connected with the inner wall of the inner sealing tube 2, the inner wall of the second sealing sleeve 12 is movably connected with the outer surface of the cylinder body 1, the bottom of the cylinder body 1 comprises an outer sealing tube 13 and a third sealing sleeve 14, the top of the outer sealing tube 13 is movably sleeved with the bottom of the inner sealing tube 2, the outer surface of the third sealing sleeve 14 is fixedly connected with the inner wall of the outer sealing tube 13, the inner wall of the third sealing sleeve 14 is movably connected with the outer surface of the inner sealing tube 2, the inner part of the inner sealing tube 2 can be sealed under the action of the outer sealing tube 13 and the third sealing sleeve 14, the sealing performance of the inner part of the device is better, the cylinder body 1 comprises a pressure sensor 15, two baffles 17 and two supporting mechanisms, the bottom of the, the pressure sensor 15 is positioned inside the cylinder body 1, the oil pressure inside the cylinder body 1 can be monitored through the action of the pressure sensor 15, then a signal is transmitted to the outside of the device, when the oil pressure inside the cylinder body 1 is reduced, the oil pressure signal inside the device can be transmitted to the outside of the device, then an alarm device gives an alarm to remind a user to take corresponding measures for processing, the pressure sensor 15 internally comprises a pressure detection module 1501, a data transmission module 1502, a data processing module 1503, a control module 1504, an alarm device 1505 and a pressure display device 1506, the input end of the data transmission module 1502 is electrically connected with the output end of the pressure detection module 1501, the input end of the data processing module 1503 is electrically connected with the output end of the data transmission module 1502, and the input end of the control module 1504 is electrically connected with the output end of the data processing module 1502, the input end of the alarm device 1505 is electrically connected with the input end of the control module 1504, the input end of the pressure display device 1506 is electrically connected with the input end of the data processing module 1503, the cylinder body 1 comprises an oil hole 16 inside, the oil hole 16 is located at the bottom of the cylinder body 1, the two baffles 17 are respectively fixedly connected with the left side and the right side of the inner top wall of the inner sealing tube 2, the two support mechanisms are respectively located below the two baffles 17, the support mechanisms comprise

support seats

1801 and 1802, a support plate 1803, a support rod 1804, a support spring 1805 and a support block 1806 inside, the bottom of the support seat 1801 is fixedly connected with the top of the cylinder body 1, the bottom of the support tube 1802 is fixedly connected with the top of the support seat 1801, the bottom of the support plate 1803 is fixedly connected with the top of the support tube 1802, the bottom of the support rod 1804 is movably inserted into the support tube 1802, the bottom of supporting shoe 1806 and the top fixed connection of bracing piece 1804, the top of supporting shoe 1806 and the bottom overlap joint of baffle 17, supporting spring 1805's bottom and backup pad 1803's top fixed connection, supporting spring 1805's top and supporting shoe 1806's bottom fixed connection, effect through supporting mechanism, make interior sealed tube 2 can carry out certain support to interior roof of interior sealed tube 2 when stretching out and drawing back from top to bottom, can cushion the top of device, prevent that the direct top direct collision of top that leads to the device of interior roof of interior sealed tube 2 and cylinder body 1 from taking place to damage.

The theory of operation, the device is at the during operation, piston rod 3 is flexible from top to bottom in the inside of cylinder body, the inside of interior sealed tube 2 is flexible from top to bottom on the surface of cylinder body 1, the inner wall of external seal pipe 13 reciprocates on interior sealed tube 2 surface simultaneously, make the device be in the state of sealing at the during operation always, the device is at the in-process of work, pressure sensor 15 can detect the inside pressure of cylinder body 1 in real time, then with the outside of signal transmission to the device, when the inside pressure of cylinder body 1 reduces, through the signal that pressure sensor 15 wore out, device outside alarm device 1505 can corresponding issue the police dispatch newspaper.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an oil seal assembly of oil hydraulic shock absorber, includes cylinder body (1), inner seal pipe (2), piston rod (3), fixed cover (5), first seal cover (6) and inner tube (7), its characterized in that: the inner sealing pipe (2) is movably sleeved with the side surface of the top of the cylinder body (1), the side surface of the piston rod (3) is inserted into the cylinder body (1), the outer surface of the fixing sleeve (5) is fixedly connected with the inner part of the cylinder body (1), the outer surface of the first sealing sleeve (6) is fixedly connected with the inner wall of the fixing sleeve (5), the side surface of the piston rod (3) is movably inserted into the first sealing sleeve (6), the inner pipe (7) is fixedly connected with the inner part of the cylinder body (1), the inner pipe (7) comprises a telescopic spring (8), the top end of the telescopic spring (8) is fixedly connected with the bottom end of the piston rod (3), the bottom end of the telescopic spring (8) is fixedly connected with the inner bottom wall of the inner pipe (7), the inner sealing pipe (2) comprises a second sealing sleeve (12), the outer surface of the second sealing sleeve (12) is fixedly connected with the inner wall of the inner sealing pipe (2), the inner wall of the second sealing sleeve (12) is movably connected with the outer surface of the cylinder body (1), the cylinder body (1) comprises a pressure sensor (15), two baffles (17) and two supporting mechanisms, the bottom of the pressure sensor (15) is fixedly connected with the inside of the cylinder body (1), the two baffles (17) are respectively and fixedly connected with the left side and the right side of the inner top wall of the inner sealing pipe (2), and the two supporting mechanisms are respectively positioned below the two baffles (17); the bottom of the cylinder body (1) comprises an outer sealing pipe (13) and a third sealing sleeve (14), the top of the outer sealing pipe (13) is movably sleeved with the bottom of the inner sealing pipe (2), the outer surface of the third sealing sleeve (14) is fixedly connected with the inner wall of the outer sealing pipe (13), and the inner wall of the third sealing sleeve (14) is movably connected with the outer surface of the inner sealing pipe (2).

2. The oil seal assembly of an oil hydraulic shock absorber according to claim 1, wherein: the inside of cylinder body (1) is including sealing washer (4), the inside fixed connection of the surface of sealing washer (4) and cylinder body (1), the inner wall of sealing washer (4) and the side surface activity of piston rod (3) are cup jointed.

3. The oil seal assembly of an oil hydraulic shock absorber according to claim 1, wherein: the oil drain structure is characterized in that the inner pipe (7) is internally provided with an oil drain hole (9) and an oil return hole (10), the oil drain hole (9) is located on the left side of the inner pipe (7), and the oil return hole (10) is located at the top of the left side of the inner pipe (7).

4. The oil seal assembly of an oil hydraulic shock absorber according to claim 1, wherein: the inside of cylinder body (1) is including two buffering sponges (11), the surface of two buffering sponges (11) all with the inside fixed connection of cylinder body (1), two buffering sponges (11) are located the left side and the right side of piston rod (3) respectively.

5. The oil seal assembly of an oil hydraulic shock absorber according to claim 1, wherein: the pressure sensor (15) comprises a pressure detection module (1501), a data transmission module (1502), a data processing module (1503), a control module (1504), an alarm device (1505) and a pressure display device (1506) inside, wherein the input end of the data transmission module (1502) is electrically connected with the output end of the pressure detection module (1501), the input end of the data processing module (1503) is electrically connected with the output end of the data transmission module (1502), the input end of the control module (1504) is electrically connected with the output end of the data processing module (1503), the input end of the alarm device (1505) is electrically connected with the input end of the control module (1504), and the input end of the pressure display device (1506) is electrically connected with the input end of the data processing module (1503).

6. The oil seal assembly of an oil hydraulic shock absorber according to claim 1, wherein: the interior of the cylinder body (1) comprises an oil filling hole (16), and the oil filling hole (16) is positioned at the bottom of the cylinder body (1).

7. The oil seal assembly of an oil hydraulic shock absorber according to claim 1, wherein: the utility model discloses a supporting mechanism, including supporting seat (1801), stay tube (1802), backup pad (1803), bracing piece (1804), supporting spring (1805) and supporting shoe (1806), the bottom of supporting seat (1801) and the top fixed connection of cylinder body (1), the bottom of stay tube (1802) and the top fixed connection of supporting seat (1801), the bottom of backup pad (1803) and the top fixed connection of stay tube (1802), the bottom of bracing piece (1804) is pegged graft with the inside activity of stay tube (1802), the inside and the side surface of bracing piece (1804) of supporting spring (1805) cup joint, the bottom of supporting shoe (1806) and the top fixed connection of bracing piece (1804), the top and the bottom overlap joint of baffle (17) of supporting shoe (1806).

8. The oil seal assembly of an oil hydraulic shock absorber according to claim 1, wherein: the bottom end of the supporting spring (1805) is fixedly connected with the top of the supporting plate (1803), and the top end of the supporting spring (1805) is fixedly connected with the bottom of the supporting block (1806).