CN214367450U

CN214367450U - Hydraulic damper capable of quickly relieving pressure and contracting

Info

Publication number: CN214367450U
Application number: CN202022852838.7U
Authority: CN
Inventors: 时勤
Original assignee: Jiashan Zhongjian Technology Co ltd
Current assignee: Jiashan Zhongjian Technology Co ltd
Priority date: 2020-12-02
Filing date: 2020-12-02
Publication date: 2021-10-08
Anticipated expiration: 2030-12-02

Abstract

The utility model discloses a hydraulic damper with rapid pressure relief and contraction, which comprises an oil cylinder and a piston rod, wherein a first cavity and a second cavity which are mutually communicated are arranged in the oil cylinder, the first cavity is close to the bottom end of the oil cylinder, and a first damping component is arranged between the second cavity and the piston rod; the second damping assembly comprises a static valve block fixed on the piston rod and connected to the first cavity in a sliding mode, a hard movable valve block sleeved on the piston rod and located on one side of the static valve block away from the second cavity, an elastic valve arranged at one end, away from the static valve block, of the hard movable valve block, a piston guide sliding block arranged on one end, facing one bottom face of the first cavity, of the piston rod, a plurality of pressure relief channels are formed in one side wall of the first cavity, and the pressure relief channels are close to the bottom face of the first cavity. The utility model discloses a pressure release passageway realizes that silicon oil circulates through pressure release passageway is quick, promotes oil pressure balance in the hydro-cylinder, realizes that the damping effect is eliminated to the last section stroke of piston rod compression, realizes the quick compression of piston rod, improves and uses the convenience.

Description

Hydraulic damper capable of quickly relieving pressure and contracting

Technical Field

The utility model relates to a hydraulic damper field especially involves a hydraulic damper of quick release shrink.

Background

The hydraulic damper has wide application fields, such as the application in the industries of pipelines, vehicles, buildings and furniture, and is used as a damping device for resisting earthquake and impact.

When using a hydraulic damper, the first half stroke of the piston rod compression of the hydraulic damper is generally used, but when compressing the second half stroke of the piston rod, the same force is still required to compress the piston rod. Therefore, the hydraulic damper is labor-consuming to use and is not beneficial to the use convenience of a user.

Therefore, there is a need for an improved structure that overcomes the above-mentioned deficiencies.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a hydraulic damper of quick release shrink realizes through pressure release channel that silicon oil circulates fast through pressure release channel that oil pressure balance in the promotion hydro-cylinder realizes that the damping effect is eliminated to one section last stroke of piston rod compression, realizes the quick compression of piston rod, improves and uses the convenience.

The above technical purpose of the utility model is realized through following technical scheme: a hydraulic damper capable of quickly relieving pressure and contracting comprises an oil cylinder and a piston rod, wherein a first cavity and a second cavity which are communicated with each other are arranged in the oil cylinder, the first cavity is close to the bottom end of the oil cylinder, a first damping assembly is arranged between the second cavity and the piston rod, the first damping assembly comprises a spring arranged in the second cavity, and a floating sealing ring which is arranged in the second cavity and is positioned at one end, facing the first cavity, of the spring, and a second damping assembly is arranged between the first cavity and the piston rod; the second damping subassembly include fixed connection in piston rod and sliding connection in static valve piece, the cover of cavity one are located the piston rod just is located the valve block is moved to the stereoplasm that the static valve piece deviates from two one sides of cavity, set up in the stereoplasm is moved the one end that the valve block deviates from the static valve piece and is provided with the elasticity valve, set up in the piston rod is towards the piston direction slider of a bottom surface one end of cavity, piston direction slider begins to have a plurality of and crosses the discharge orifice, a plurality of pressure release passageway has been seted up to a cavity lateral wall, pressure release passageway is close to in the bottom surface of cavity one.

The utility model discloses a further set up to: the elastic valve is integrally formed with a protruding part which is clamped into the inner cavity of the hard movable valve plate and is abutted against the inner wall of the hard movable valve plate.

The utility model discloses a further set up to: an O-shaped ring for assisting the elastic valve in deforming and expanding is arranged between the elastic valve and the piston guide sliding block.

The utility model discloses a further set up to: the floating seal ring is arranged in a round table shape, and a through hole for the piston rod to penetrate through is arranged at the center of the floating seal ring.

The utility model discloses a further set up to: one side of the floating sealing ring, which is far away from the spring, is provided with a fixed check ring, and the fixed check ring can abut against the bottom surface of the chamber I facing the chamber II.

The utility model discloses a further set up to: a mounting ring is arranged between the floating sealing ring and the spring, and a bulge part for sleeving the spring part is arranged on the end surface of the mounting ring facing the spring; and a piston rod guide sleeve is arranged at one end of the spring, which is far away from the floating seal ring, and the piston rod guide sleeve is arranged on the piston rod.

The utility model discloses a further set up to: the surface of the static valve plate facing the hard dynamic valve plate is provided with a flow groove for medium in the oil cylinder to flow.

To sum up, the utility model discloses following beneficial effect has:

when the piston rod is pulled and extends out of the oil cylinder, the space of the first chamber on one side of the piston guide slider, which is far away from the second chamber, is increased, so that the oil pressure in the first chamber is increased, silicone oil enters the corresponding overflowing hole of the piston guide slider after passing through the inner cavity of the hard movable valve plate and the side wall of the hard movable valve plate from the fixing ring and then flows into the space of the second chamber on one side of the piston guide slider, which is far away from the second chamber, and the floating seal ring is pushed to move towards the first chamber, which is far away from the second chamber, and certain pressure relief is realized after the oil pressure in the first chamber is increased; when the piston rod extends, the spring pushes the floating sealing ring to reset, and oil pressure balance of the first chamber and the second chamber is realized; when compressing the piston rod, the silicon oil that piston direction slider deviates from static valve piece one side flows to stereoplasm moving valve piece position by overflowing the hole, because oil pressure increases makes stereoplasm moving valve piece butt in the static valve piece and but laminating in a cavity inner wall of butt after the elastic valve shape pressurized deformation, it diminishes to lead to silicon oil to flow the space of solid fixed ring position from overflowing the hole, silicon oil flows through from overflowing the groove, slow down silicon oil flow velocity, thereby realize the damping effect, and remove a definite position when the piston rod compression, make stereoplasm moving valve piece remove behind the pressure release channel position, silicon oil accessible pressure release channel directly flows to solid fixed ring position, realize the oil pressure balance in the cavity one, make things convenient for the piston rod to shrink fast, thereby realize making things convenient for the shrink piston rod, it is convenient to improve hydraulic damper and use, labor-saving effect.

When the piston rod receives external force again and reaches a certain pressure, the elastic valve is pressed to deform and close the overflowing gap between the hard valve plate and the inner wall of the cavity, silicone oil flows through the overflowing groove, and after the energy absorption is finished, the elastic valve plate returns to the original state.

Make things convenient for stereoplasm movable valve piece to be connected with the elasticity valve through the bulge to play supplementary elasticity valve expansion effect through O type ring butt in the elasticity valve, promote damping performance.

The floating sealing ring is in a circular truncated cone shape, so that the floating sealing ring can be ensured to be in contact and sealed with the inner walls of the two chambers, and meanwhile, the contact surface is reduced, and further, the friction force is reduced; meanwhile, the fixed retainer ring is arranged, so that the floating seal ring can be prevented from directly contacting the bottom surface of the second chamber, and the service life of the floating seal ring is prolonged.

Drawings

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

FIG. 2 is an enlarged view of section B of FIG. 1;

fig. 3 is a sectional view of a-a portion of fig. 1.

The corresponding part names indicated by the numbers in the figures: 1. an oil cylinder; 2. a piston rod; 3. a first chamber; 4. a second chamber; 5. a spring; 6. a floating seal ring; 7. a static valve plate; 8. a hard movable valve plate; 9. an elastic valve; 10. a piston guide slide block; 11. an overflowing hole; 12. a pressure relief channel; 13. a projection; 14. an O-ring; 15. perforating holes; 16. fixing a retainer ring; 17. a mounting ring; 18. a boss portion; 19. a piston rod guide sleeve; 20. and (4) a flow through groove.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention will be further described with reference to the drawings and the specific embodiments.

As shown in fig. 1 to 3, the utility model provides a hydraulic damper of quick release shrink, including hydro-cylinder 1, piston rod 2, the intussuseption of hydro-cylinder 1 is filled with corresponding medium, can be silicon oil etc.. A first cavity 3 and a second cavity 4 which are communicated with each other are arranged in the oil cylinder 1, the first cavity 3 is close to the bottom end of the oil cylinder 1, the diameter of the first cavity 3 is smaller than that of the second cavity 4, a first damping assembly is arranged between the second cavity 4 and the piston rod 2 and comprises a spring 5 arranged in the second cavity 4 and a floating sealing ring 6 arranged in the second cavity 4 and located at one end, facing the first cavity 3, of the spring 5, and a second damping assembly is arranged between the first cavity 3 and the piston rod 2; the second damping subassembly include fixed connection in 2 and sliding connection in the piston rod 2 and sliding connection in the static valve piece 7, the cover of cavity 3 are located the piston rod 2 just is located the valve block 8 is moved to the stereoplasm that the static valve piece 7 deviates from two 4 one sides in the cavity, set up in the stereoplasm moves the one end that the valve block 8 deviates from the static valve piece 7 and is provided with elasticity valve 9, set up in piston rod 2 is towards the piston guide slider 10 of 3 bottom surface one ends in the cavity, and the valve block 8 is moved to the stereoplasm and elasticity valve 9 all is cyclic annular setting, and the static valve piece 7 is moved the surface of valve block 8 towards the stereoplasm and is seted up the groove 20 that overflows that supplies the interior medium of hydro-cylinder 1 to circulate. Piston direction slider 10 begins to have a plurality of discharge orifice 11, a plurality of pressure release passageway 12 has been seted up to chamber 3 lateral wall, pressure release passageway 12 is close to the bottom surface of chamber 3. When the piston rod 2 is pulled and the piston rod 2 extends out of the oil cylinder 1, the space of one side of the chamber I3, which is positioned at the position where the piston guide slider 10 deviates from the chamber II 4, is increased, so that oil with increased oil pressure in the chamber I3 flows into the space of one side, which is positioned at the position where the piston guide slider 10 deviates from the chamber II 4, of the piston guide slider 10 after passing through the inner cavity of the hard movable valve plate 8 and the side wall of the hard movable valve plate 8 by the fixing ring and entering the overflow hole 11 corresponding to the piston guide slider 10, and then flows into the space of one side, which is positioned at the position where the piston guide slider 10 deviates from the chamber II 4, and meanwhile, the floating seal ring 6 is pushed to move towards the direction, which is deviated from the chamber I3, of the chamber II 4 after the oil pressure in the chamber I3 is increased, and certain pressure relief is realized; when the piston rod 2 extends, the spring 5 pushes the floating seal ring 6 to reset, and oil pressure balance of the first chamber 3 and the second chamber 4 is realized; when compressing piston rod 2, the silicon oil that piston direction slider 10 deviates from stationary valve piece 7 one side flows to stereoplasm moving valve piece 8 position by crossing discharge orifice 11, because the oil pressure increases makes stereoplasm moving valve piece 8 butt in stationary valve piece 7 and but the butt laminating is in one 3 inner walls of cavity after the deformation is pressed to elasticity valve 9 shape, it diminishes to lead to silicon oil to flow the space of solid fixed ring position from crossing discharge orifice 11, silicon oil flows from crossing discharge orifice 20, slow down silicon oil circulation speed, thereby realize the damping effect, and move a certain position when the compression of piston rod 2, time stereoplasm moving valve piece 8 removes behind pressure release channel 12 position, silicon oil accessible pressure release channel 12 directly flows to solid fixed ring position, realize the oil pressure balance in one 3 of cavities, make things convenient for piston rod 2 to shrink fast, thereby realize convenient shrink piston rod 2, improve the convenience that hydraulic damper used, laborsaving effect.

In order to facilitate the connection of the elastic valve 9 and the hard movable valve plate 8, the elastic valve 9 is integrally formed with a protruding part 13 which is clamped into the inner cavity of the hard movable valve plate 8 and abuts against the inner wall of the hard movable valve plate 8. And an O-ring 14 for assisting the elastic valve 9 to deform and expand is arranged between the elastic valve 9 and the piston guide slider 10. The hard movable valve plate 8 is conveniently connected with the elastic valve 9 through the protruding part 13, and the O-shaped ring 14 abuts against the elastic valve 9 to play a role in assisting the expansion of the elastic valve 9, so that the damping performance is improved.

The floating seal ring 6 is arranged in a circular truncated cone shape, and a through hole 15 for the piston rod 2 to penetrate through is arranged at the center of the floating seal ring 6. And a fixed check ring 16 is arranged on one side of the floating seal ring 6, which is far away from the spring 5, and the fixed check ring 16 can abut against the bottom surface of the chamber two 4, which faces the chamber one 3. The floating sealing ring 6 is in a circular truncated cone shape, so that the floating sealing ring 6 can be ensured to be in contact and sealed with the inner wall of the second chamber 4, and meanwhile, the contact surface is reduced, and further, the friction force is reduced; meanwhile, the fixed retainer ring 16 is arranged, so that the floating seal ring 6 is prevented from directly contacting the bottom surface of the second chamber 4, and the service life of the floating seal ring 6 is prolonged.

A mounting ring 17 is arranged between the floating seal ring 6 and the spring 5, and a bulge 18 for partially sleeving the spring 5 is arranged on the end surface of the mounting ring 17 facing the spring 5; one end of the spring 5, which is far away from the floating seal ring 6, is provided with a piston rod guide sleeve 19, and the piston rod guide sleeve 19 is sleeved on the piston rod 2. The spring 5 is easily mounted by means of the mounting ring 17 and the piston rod guide 19, and the spring 5 is prevented from directly contacting the piston rod 2.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a hydraulic damper of quick release shrink, includes hydro-cylinder (1), piston rod (2), its characterized in that: a first cavity (3) and a second cavity (4) which are communicated with each other are arranged in the oil cylinder (1), the first cavity (3) is close to the bottom end of the oil cylinder (1), a first damping assembly is arranged between the second cavity (4) and the piston rod (2), the first damping assembly comprises a spring (5) arranged in the second cavity (4) and a floating sealing ring (6) which is arranged in the second cavity (4) and is positioned at one end, facing the first cavity (3), of the spring (5), and a second damping assembly is arranged between the first cavity (3) and the piston rod (2); second damping subassembly includes fixed connection in piston rod (2) and sliding connection in static valve block (7), the cover of cavity (3) are located piston rod (2) and be located static valve block (7) deviate from the stereoplasm of cavity two (4) one side and move valve block (8), set up in the stereoplasm moves the one end that valve block (8) deviate from static valve block (7) and is provided with elasticity valve (9), set up in piston rod (2) piston direction slider (10) towards cavity (3) bottom surface one end, piston direction slider (10) have been seted up a plurality of and have crossed discharge orifice (11), cavity (3) lateral wall begins to have a plurality of pressure release passageway (12), pressure release passageway (12) are close to in the bottom surface of cavity (3).

2. The hydraulic damper with rapid pressure relief contraction according to claim 1, wherein: the elastic valve (9) is integrally formed with a protruding part (13) which is clamped into the inner cavity of the hard movable valve plate (8) and abuts against the inner wall of the hard movable valve plate (8).

3. The hydraulic damper with rapid pressure relief contraction according to claim 1, wherein: an O-shaped ring (14) for assisting the elastic valve (9) in deforming and expanding is arranged between the elastic valve (9) and the piston guide sliding block (10).

4. The hydraulic damper with rapid pressure relief contraction according to claim 1, wherein: the floating seal ring (6) is arranged in a round table shape, and a through hole (15) for the piston rod (2) to penetrate through is arranged at the center of the floating seal ring (6).

5. The hydraulic damper with rapid pressure relief contraction according to claim 1, wherein: one side of the floating seal ring (6) departing from the spring (5) is provided with a fixed check ring (16), and the fixed check ring (16) can abut against the bottom surface of the chamber I (3) facing the chamber II (4).

6. The hydraulic damper with rapid pressure relief contraction according to claim 1, wherein: a mounting ring (17) is arranged between the floating sealing ring (6) and the spring (5), and a bulge part (18) for partially sleeving the spring (5) is arranged on the end surface of the mounting ring (17) facing the spring (5); one end, far away from the floating sealing ring (6), of the spring (5) is provided with a piston rod guide sleeve (19), and the piston rod guide sleeve (19) is sleeved on the piston rod (2).

7. The hydraulic damper with rapid pressure relief contraction according to claim 1, wherein: and a flow passing groove (20) for medium circulation in the oil cylinder (1) is formed in the surface of the static valve plate (7) facing the hard dynamic valve plate (8).