CN104653939A - Hydraulic damper - Google Patents
Hydraulic damper Download PDFInfo
- Publication number
- CN104653939A CN104653939A CN201310605847.8A CN201310605847A CN104653939A CN 104653939 A CN104653939 A CN 104653939A CN 201310605847 A CN201310605847 A CN 201310605847A CN 104653939 A CN104653939 A CN 104653939A
- Authority
- CN
- China
- Prior art keywords
- hydraulic cylinder
- hydraulic
- compress spring
- hole
- pressure pad
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/06—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using both gas and liquid
- F16F9/064—Units characterised by the location or shape of the expansion chamber
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/04—Devices damping pulsations or vibrations in fluids
- F16L55/045—Devices damping pulsations or vibrations in fluids specially adapted to prevent or minimise the effects of water hammer
- F16L55/05—Buffers therefor
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fluid-Damping Devices (AREA)
Abstract
The invention relates to a hydraulic damper. The hydraulic damper comprises a hydraulic cylinder barrel; a front end cover and a rear end cover are respectively fixed to two end parts of the hydraulic cylinder barrel; a piston rod in the hydraulic cylinder barrel passes through the front end cover; a liquid storing cavity is formed into a piston in the hydraulic cylinder barrel; a sealing air bag filled with pressure air is arranged in the liquid storing cavity; the liquid storing cavity at the outside of the sealing air bag is filled with hydraulic liquid; a damping valve is arranged in a channel from the liquid storing cavities to two end plates of the piton. The hydraulic damper further comprises a sealing device; an assembling hole is formed in the axial end surface of the front end cover; a sealing device is mounted into the assembling hole, comprising a sealing ring, an annular pressing cushion and at least three compressing springs; the annular pressing cushion sleeves the sealing ring; the compressing springs are uniformly distributed, and each compressing spring is pre-tensioned between the annular pressing cushion and the wall surface of the assembling hole. The hydraulic damper has the advantage of being high in sealing performance.
Description
Technical field
The present invention relates to a kind of hydraulic damper.
Background technique
Hydraulic damper moves by special valve-controlled hydraulic cylinder piston, with the damping device suppressing pipeline and equipment to affect by cyclical loads or impact load.Its performance characteristics can be summarized with " tempering toughness with gentleness ".Under pipeline is in normal working, it can adapt to slow movement that pipeline causes because of the cold and hot change of medium and produce damping hardly to pipeline, namely so-called soft, under special accident conditions, when pipeline is subject to temporary impact, namely hydraulic damper becomes approximate rigid mechanism and carrys out supporting pipeline, and the vibrational energy of impact load can be rapidly absorbed and transmit, thus reduce the impact amplitude of pipeline, reach the requirement of buffering, antivibration.
A kind of hydraulic damper is disclosed in prior art, it comprises hydraulic cylinder, the front cover that hydraulic cylinder two end part are fixedly connected with through turnbuckle, rear end cover, piston in hydraulic cylinder and be connected with piston and pass the piston rod of front cover, hydraulic fluid in hydraulic cylinder, the fixing ear be connected with front cover, tailpiece of the piston rod respectively, reservoir compartment body is set in described piston, the pressure bladder of pressed gas is filled in placing in reservoir compartment body, injection liquid hydraulic fluid in reservoir compartment body outside pressure bladder, reservoir compartment body arranges orifice valve to the cavity of piston two end plates.The air bag Volume Changes that this hydraulic damper utilizes gas pressure change in air bag to cause, to compensate the change of piston two ends hydraulic pressure cavity volume when single rod hydraulic damper piston moves, utilizes orifice valve regulator solution hydraulic fluid to pass in and out speed and the pressure of reservoir compartment in piston.But the sealing between the piston rod of above-mentioned hydraulic damper and front cover exists integrity problem, in use for some time, the wearing and tearing because of sealing gasket make to occur gap between the two, cause leakage.
Summary of the invention
For the deficiencies in the prior art, the invention provides a kind of hydraulic damper, the present invention has the advantage of good seal performance.
The technological scheme solved the problems of the technologies described above is as follows:
Hydraulic damper, comprise hydraulic cylinder, hydraulic cylinder two end part are fixed with front cover respectively, rear end cover, be positioned at the piston rod of hydraulic cylinder through front cover, the piston being positioned at hydraulic cylinder arranges reservoir compartment body, the pressure bladder of pressed gas is filled in placing in reservoir compartment body, injection liquid hydraulic fluid in reservoir compartment body outside pressure bladder, reservoir compartment body arranges orifice valve to the cavity of piston two end plates, also comprise a seal arrangement, the axial end of described front cover is provided with pilot hole, seal arrangement is arranged in this pilot hole, seal arrangement is by seal ring, annular pressure pad and at least three Compress Spring compositions, annular pressure pad is enclosed within seal ring, Compress Spring is in distributing equably, and each Compress Spring pretension is between annular pressure pad and the wall surface of the hole of pilot hole.
The wall surface of the hole of described mounting hole is provided with radial blind hole, and the outer wall of described annular pressure pad is provided with radial protrusion, and one end of Compress Spring is arranged in radial blind hole, and the other end of Compress Spring is enclosed within the radial protrusion of annular pressure pad.
Have employed such scheme, the axial end of described front cover is provided with pilot hole, seal arrangement is arranged in this pilot hole, seal arrangement is made up of seal ring, annular pressure pad and at least three Compress Springs, annular pressure pad is enclosed within seal ring, Compress Spring is in distributing equably, and each Compress Spring pretension is between annular pressure pad and the wall surface of the hole of pilot hole.Sealed between piston rod and front cover by seal arrangement, when seal ring is worn, under the return action power of spring, annular pressure pad is compressed, thus seal ring is compressed, therefore, seal ring beginning bullet keeps in touch with piston rod eventually, thus the sealability guaranteed.
Accompanying drawing explanation
Fig. 1 is the structural representation of hydraulic damper of the present invention;
In accompanying drawing, 1 is hydraulic cylinder, and 2 is front cover, and 3 is rear end cover, and 4 is piston rod, and 5 is piston, and 6 is pressure bladder, and 7 is orifice valve, and 8 is seal ring, and 9 is annular pressure pad, and 9a is radial protrusion, and 10 is Compress Spring.
Embodiment
Below in conjunction with accompanying drawing, the present invention will be further described.
With reference to Fig. 1, hydraulic damper of the present invention, comprise hydraulic cylinder 1, hydraulic cylinder 1 two end part are fixed with front cover 2, rear end cover 3 respectively, be positioned at the piston rod 4 of hydraulic cylinder 1 through front cover 2, the piston 5 being positioned at hydraulic cylinder 1 arranges reservoir compartment body, fills the pressure bladder 6 of pressed gas in reservoir compartment body in placing, injection liquid hydraulic fluid in reservoir compartment body outside pressure bladder 6, reservoir compartment body arranges orifice valve 7 to the cavity of piston two end plates.Also comprise a seal arrangement, the axial end of described front cover 2 is provided with pilot hole, seal arrangement is arranged in this pilot hole, seal arrangement is made up of seal ring 8, annular pressure pad 9 and at least three Compress Springs 10, annular pressure pad 9 is enclosed within seal ring 8, Compress Spring 10 is in distributing equably, and each Compress Spring 10 pretension is between annular pressure pad 9 and the wall surface of the hole of pilot hole.The wall surface of the hole of described mounting hole is provided with radial blind hole, and the outer wall of described annular pressure pad 9 is provided with radial protrusion 9a, and one end of Compress Spring 10 is arranged in radial blind hole, and the other end of Compress Spring 10 is enclosed within the radial protrusion 9a of annular pressure pad.
Claims (2)
1. a hydraulic damper, comprise hydraulic cylinder, hydraulic cylinder two end part are fixed with front cover respectively, rear end cover, be positioned at the piston rod of hydraulic cylinder through front cover, the piston being positioned at hydraulic cylinder arranges reservoir compartment body, the pressure bladder of pressed gas is filled in placing in reservoir compartment body, injection liquid hydraulic fluid in reservoir compartment body outside pressure bladder, reservoir compartment body arranges orifice valve to the cavity of piston two end plates, it is characterized in that: also comprise a seal arrangement, the axial end of described front cover is provided with pilot hole, seal arrangement is arranged in this pilot hole, seal arrangement is by seal ring, annular pressure pad and at least three Compress Spring compositions, annular pressure pad is enclosed within seal ring, Compress Spring is in distributing equably, and each Compress Spring pretension is between annular pressure pad and the wall surface of the hole of pilot hole.
2. hydraulic damper according to claim 1, it is characterized in that: the wall surface of the hole of described mounting hole is provided with radial blind hole, the outer wall of described annular pressure pad is provided with radial protrusion, one end of Compress Spring is arranged in radial blind hole, and the other end of Compress Spring is enclosed within the radial protrusion of annular pressure pad.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310605847.8A CN104653939A (en) | 2013-11-25 | 2013-11-25 | Hydraulic damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310605847.8A CN104653939A (en) | 2013-11-25 | 2013-11-25 | Hydraulic damper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104653939A true CN104653939A (en) | 2015-05-27 |
Family
ID=53245395
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310605847.8A Pending CN104653939A (en) | 2013-11-25 | 2013-11-25 | Hydraulic damper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104653939A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106638623A (en) * | 2017-02-20 | 2017-05-10 | 长江勘测规划设计研究有限责任公司 | Load compensation support device and load compensation support method |
| CN107345549A (en) * | 2016-05-04 | 2017-11-14 | 上海汽车集团股份有限公司 | Suspension system and its damper |
| CN115324982A (en) * | 2022-08-26 | 2022-11-11 | 中国人民解放军海军工程大学 | Self-adaptive hydraulic muffler device |
-
2013
- 2013-11-25 CN CN201310605847.8A patent/CN104653939A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107345549A (en) * | 2016-05-04 | 2017-11-14 | 上海汽车集团股份有限公司 | Suspension system and its damper |
| CN107345549B (en) * | 2016-05-04 | 2019-05-24 | 上海汽车集团股份有限公司 | Suspension system and its damper |
| CN106638623A (en) * | 2017-02-20 | 2017-05-10 | 长江勘测规划设计研究有限责任公司 | Load compensation support device and load compensation support method |
| CN115324982A (en) * | 2022-08-26 | 2022-11-11 | 中国人民解放军海军工程大学 | Self-adaptive hydraulic muffler device |
| CN115324982B (en) * | 2022-08-26 | 2024-03-26 | 中国人民解放军海军工程大学 | Self-adaptive hydraulic silencing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150527 |