CN203686468U - Hydraulic damper - Google Patents
Hydraulic damper Download PDFInfo
- Publication number
- CN203686468U CN203686468U CN201320754216.8U CN201320754216U CN203686468U CN 203686468 U CN203686468 U CN 203686468U CN 201320754216 U CN201320754216 U CN 201320754216U CN 203686468 U CN203686468 U CN 203686468U
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- hydraulic cylinder
- pressure pad
- hydraulic
- piston
- hydraulic damper
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Abstract
The utility model relates to a hydraulic damper. The hydraulic damper comprises a hydraulic cylinder barrel, wherein a front end cover and a rear end cover are respectively and fixedly arranged at the two end parts of the hydraulic cylinder barrel, a piston rod in the hydraulic cylinder barrel penetrates through the front end cover, a fluid storage chamber is arranged in a piston in the hydraulic cylinder barrel, a sealed airbag which is inflated with pressure gas is placed in the fluid storage chamber, hydraulic fluid is filled in the fluid storage chamber outside the sealed airbag and a damping valve is arranged in a chamber passage from the fluid storage chamber to the two end plates of the piston. The hydraulic damper is characterized in that the hydraulic damper additionally comprises a sealing device, an assembling hole is formed in the axial end surface of the front end cover, the sealing device is installed in the assembling hole, the sealing device consists of a sealing ring, a ring pressure pad and at least three compression springs, the ring pressure pad is sheathed on the sealing ring, the compression springs are uniformly distributed and each compression spring is pressed between the ring pressure pad and the wall surface of the assembling hole. The hydraulic damper has the advantage of good sealing performance.
Description
Technical field
The utility model relates to a kind of hydraulic damper.
Background technique
Hydraulic damper is to move by special valve control hydraulic cylinder piston, the damping device that affected by periodicity load or impact load to suppress pipeline and equipment.Its performance characteristics can be summarized with " tempering toughness with gentleness ".At pipeline under normal working, it can adapt to pipeline and pipeline be produced to damping hardly because of the slow movement that the cold and hot variation of medium causes, so-called soft, under special accident conditions, when pipeline is subject to temporary impact, hydraulic damper becomes approximate rigid mechanism and carrys out supporting pipeline, and the vibrational energy of impact load can be rapidly absorbed and transmit, thereby the impact amplitude that reduces pipeline, reaches the requirement of buffering, antivibration.
In prior art, disclose a kind of hydraulic damper, it comprises hydraulic cylinder, front cover, rear end cover that hydraulic cylinder two end part are fixedly connected with through turnbuckle, piston in hydraulic cylinder and the piston rod that is connected, also passes front cover with piston, hydraulic fluid in hydraulic cylinder, the fixing ear being connected with front cover, tailpiece of the piston rod respectively, reservoir compartment body is set in described piston, in placing in reservoir compartment body, fill the pressure bladder of pressed gas, 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 variation of piston two ends hydraulic pressure cavity volume when this hydraulic damper utilizes gas pressure change causes in air bag air bag Volume Changes to compensate single rod hydraulic damper piston to move, utilizes speed and the pressure of reservoir compartment in orifice valve regulator solution hydraulic fluid turnover piston.But the sealing between piston rod and the front cover of above-mentioned hydraulic damper exists integrity problem, in use for some time, because the wearing and tearing of sealing gasket make to occur gap between the two, cause leakage.
Summary of the invention
For the deficiencies in the prior art, the utility model provides a kind of hydraulic damper, the utlity model has the advantage of good seal performance.
The technological scheme solving the problems of the technologies described above is as follows:
Hydraulic damper, comprise hydraulic cylinder, hydraulic cylinder two end part are fixed with respectively front cover, rear end cover, be positioned at the piston rod of hydraulic cylinder through front cover, the piston that is positioned at hydraulic cylinder arranges reservoir compartment body, in placing in reservoir compartment body, fill the pressure bladder of pressed gas, 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 on seal ring, Compress Spring is distribution 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 blind hole radially, and the outer wall of described annular pressure pad is provided with radial protrusion, and one end of Compress Spring is arranged in blind hole radially, and the other end of Compress Spring is enclosed within on the radial protrusion of annular pressure pad.
Adopt 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 on seal ring, Compress Spring is distribution equably, and each Compress Spring pretension is between annular pressure pad and the wall surface of the hole of pilot hole.By seal arrangement to sealing between piston rod and front cover, in the time that seal ring is worn, under the return action power of spring, make annular pressure pad compressed, thereby make seal ring compressed, therefore, seal ring beginning bullet keeps in touch with piston rod eventually, thus the sealability of guaranteeing.
Brief description of the drawings
Fig. 1 is the structural representation of hydraulic damper of the present utility model;
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 utility model is described further.
With reference to Fig. 1, hydraulic damper of the present utility model, comprise hydraulic cylinder 1, hydraulic cylinder 1 two end part are fixed with respectively front cover 2, rear end cover 3, be positioned at the piston rod 4 of hydraulic cylinder 1 through front cover 2, the piston 5 that is 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 on seal ring 8, Compress Spring 10 is distribution equably, and each Compress Spring 10 pretensions are 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 blind hole radially, 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 blind hole radially, and the other end of Compress Spring 10 is enclosed within on 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 respectively front cover, rear end cover, be positioned at the piston rod of hydraulic cylinder through front cover, the piston that is positioned at hydraulic cylinder arranges reservoir compartment body, in placing in reservoir compartment body, fill the pressure bladder of pressed gas, 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 on seal ring, Compress Spring is distribution 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 blind hole radially, the outer wall of described annular pressure pad is provided with radial protrusion, one end of Compress Spring is arranged in blind hole radially, and the other end of Compress Spring is enclosed within on the radial protrusion of annular pressure pad.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320754216.8U CN203686468U (en) | 2013-11-25 | 2013-11-25 | Hydraulic damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320754216.8U CN203686468U (en) | 2013-11-25 | 2013-11-25 | Hydraulic damper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203686468U true CN203686468U (en) | 2014-07-02 |
Family
ID=51008366
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320754216.8U Expired - Fee Related CN203686468U (en) | 2013-11-25 | 2013-11-25 | Hydraulic damper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203686468U (en) |
-
2013
- 2013-11-25 CN CN201320754216.8U patent/CN203686468U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140702 Termination date: 20151125 |