CN210178818U - Full-sealed hydraulic damper - Google Patents
Full-sealed hydraulic damper Download PDFInfo
- Publication number
- CN210178818U CN210178818U CN201920761748.1U CN201920761748U CN210178818U CN 210178818 U CN210178818 U CN 210178818U CN 201920761748 U CN201920761748 U CN 201920761748U CN 210178818 U CN210178818 U CN 210178818U
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- Prior art keywords
- cavity
- piston rod
- corrugated pipe
- damper
- hydraulic damper
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- 229910000851 Alloy steel Inorganic materials 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
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- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
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- 230000035939 shock Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Abstract
The utility model discloses a totally enclosed formula hydraulic damper, include: the cylinder body is internally provided with a first cavity; the piston rod is provided with a piston, the piston is positioned in the first cavity and can slide up and down in the first cavity, and one end in the piston rod is provided with a second cavity along the axial direction; the first corrugated pipe is arranged in the second cavity, and the outer wall of the first corrugated pipe is attached to the inner wall of the piston rod. Relates to the technical field of hydraulic damping. The utility model adopts the design of the inner corrugated pipe, reduces the size of the corrugated pipe, is more favorable for the guiding and stress conditions of the corrugated pipe, greatly prolongs the service life of the corrugated pipe, and is convenient to install, use and maintain; the closed space is formed inside the whole hydraulic damper, the damper can be guaranteed to be free of leakage after vacuumizing, pressure change is small when severe movement is borne, air chambers and air bubbles cannot be generated, the size of the damper is well optimized, the rigidity of the damper is good, the damper is not prone to damage due to collision in the working process, and the service life of the damper is long.
Description
Technical Field
The utility model relates to a hydraulic damping technical field specifically relates to a seal formula hydraulic damper entirely.
Background
The damper is a device for providing motion resistance and reducing motion energy. In the industries of aerospace, aviation, war industry, firearms, automobiles and the like, various dampers or shock absorbers are used for reducing vibration and dissipating energy. Since the seventies of the twentieth century, people gradually transferred the technologies to structural engineering such as buildings, bridges, railways and the like, and the development of the technologies is very rapid. The hydraulic damper is a device sensitive to speed or acceleration, and has the characteristics that the hydraulic damper can lock the displacement of a controlled part when being impacted by larger acceleration such as vibration, earthquake, explosion and the like, and can move freely at low speed; therefore, the device is widely applied to thermal power stations, nuclear power stations and chemical industries, can provide enough rigidity under the action of sudden loads, prevents the integrity of equipment and systems from being damaged, and simultaneously ensures that the equipment and systems are not influenced by displacement caused by thermal expansion under normal conditions.
However, the existing hydraulic damper still has the problems of unreliable rubber sealing element and medium deterioration under the condition of great environmental influence, and the problems of blocking, inaccurate load transmission and the like easily occur, so that the use requirement cannot be well met.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the not enough of above-mentioned background art, provide a sealed reliable, long service life's full formula hydraulic damper that seals.
The utility model provides a totally enclosed formula hydraulic damper, include:
the cylinder body is internally provided with a first cavity;
the piston rod is provided with a piston, the piston is positioned in the first cavity and can slide up and down in the first cavity, and one end in the piston rod is provided with a second cavity along the axial direction;
the first corrugated pipe is arranged in the second cavity, and the outer wall of the first corrugated pipe is attached to the inner wall of the piston rod.
On the basis of the technical scheme, a valve core assembly is further arranged in the piston rod and comprises a liquid inlet and a liquid outlet, the liquid inlet is communicated with the second cavity, and the liquid outlet is communicated with the first cavity.
On the basis of the technical scheme, two valve core assemblies are arranged in the piston rod, and the two valve core assemblies are symmetrically arranged along the axis of the piston rod.
On the basis of the technical scheme, a third cavity is formed in the other end in the piston rod along the axial direction of the other end, the third cavity is communicated with the second cavity, a second corrugated pipe is arranged in the third cavity, and the outer wall of the second corrugated pipe is attached to the inner wall of the piston rod.
On the basis of the technical scheme, the lower end of the cylinder body is provided with an end cover, and the second corrugated pipe is fixedly connected with the end cover.
On the basis of the technical scheme, bottom plates are arranged at the ends, close to the valve core assembly, in the second cavity and the third cavity, and the first corrugated pipe and the second corrugated pipe are fixedly connected with the corresponding bottom plates respectively.
On the basis of the technical scheme, the upper end of the cylinder body is provided with the guide ring, and the guide ring is sleeved on the piston rod.
On the basis of the technical scheme, the cylinder body is also fixedly provided with a protective cover for protecting the piston rod.
On the basis of the technical scheme, a third corrugated pipe is further arranged between the protective cover and the piston rod, and the inner wall of the third corrugated pipe is attached to the outer wall of the piston rod.
On the basis of the technical scheme, a sewage draining groove is formed in the side wall of the cylinder body and communicated with the first cavity.
Compared with the prior art, the utility model has the advantages as follows:
the utility model adopts the design of the inner corrugated pipe, and the space of the second cavity arranged in the piston rod is utilized to install the first corrugated pipe, so that the size of the corrugated pipe is reduced, the guiding and stress conditions of the corrugated pipe are more favorable, the service life of the corrugated pipe is greatly prolonged, and the installation, the use and the maintenance are convenient; the closed space is formed inside the whole hydraulic damper, the damper can be guaranteed to be free of leakage after vacuumizing, pressure change is small when severe movement is borne, air chambers and air bubbles cannot be generated, the size of the damper is well optimized, the rigidity of the damper is good, the damper is not prone to damage due to collision in the working process, and the service life of the damper is long.
Drawings
FIG. 1 is a sectional view of a fully-enclosed hydraulic damper according to an embodiment of the present invention;
fig. 2 is an enlarged schematic structural diagram of the valve core assembly according to the embodiment of the present invention.
Reference numerals: 1-cylinder body, 11-first cavity, 12-end cover, 2-piston rod, 21-second cavity, 22-third cavity, 3-piston, 41-first bellows, 42-second bellows, 43-third bellows, 5-valve core assembly, 51-liquid inlet, 52-liquid outlet, 6-bottom plate, 7-guide ring, 8-protective cover, 9-blowdown groove.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Referring to fig. 1, an embodiment of the present invention provides a full-sealed hydraulic damper, including: cylinder 1, piston rod 2, piston 3, first bellows 4.
A first cavity 11 is formed in the cylinder body 1; the piston 3 is positioned in the first cavity 11 and can slide up and down in the first cavity 11, and a second cavity 21 is formed in one end of the piston rod 2 along the axial direction of the piston rod; the first bellows 41 is disposed in the second cavity 21, and an outer wall of the first bellows 41 is attached to an inner wall of the piston rod 2.
The utility model adopts the design of the inner corrugated pipe, and the space of the second cavity 21 arranged in the piston rod 2 is utilized to install the first corrugated pipe 41, so that the size of the corrugated pipe is reduced, the guiding and stress conditions of the corrugated pipe are more favorable, the service life of the corrugated pipe is greatly prolonged, and the installation, the use and the maintenance are convenient; the closed space is formed inside the whole hydraulic damper, the damper can be guaranteed to be free of leakage after vacuumizing, pressure change is small when severe movement is borne, air chambers and air bubbles cannot be generated, the size of the damper is well optimized, the rigidity of the damper is good, the damper is not prone to damage due to collision in the working process, and the service life of the damper is long.
Referring to fig. 2, in this embodiment, preferably, a valve core assembly 5 is further disposed in the piston rod 2, where the valve core assembly 5 includes a liquid inlet 51 and a liquid outlet 52, the liquid inlet 51 is communicated with the second cavity 21, and the liquid outlet 52 is communicated with the first cavity 11; the liquid inlet 51 of the valve core assembly 5 is connected with the second cavity 21 in the piston rod 2, the liquid outlet 52 is connected with the first cavity 11 in the cylinder body 1, namely the interior of the piston rod 2 and the cylinder body 1 are sealed through the valve core assembly 5, the medium paths of the two parts are controlled by the valve core assembly 5, and when the damper is impacted by a large load at a high speed, the damper is ensured to have enough rigidity; furthermore, two valve core assemblies 5 are arranged in the piston rod 2, and the two valve core assemblies 5 are symmetrically arranged along the axis of the piston rod 2; the whole damper is internally provided with a symmetrical structure, and under the working condition of providing large damping supporting load externally, the stress of the damper is symmetrically distributed according to the axis, so that the damper is prevented from bearing deflection load, the abrasion among the cylinder body 1, the piston rod 2 and the piston 3 is effectively reduced, and the service life of the damper is prolonged.
Referring to fig. 1, in this embodiment, preferably, a third cavity 22 is formed at the other end of the piston rod 2 along the axial direction thereof, the third cavity 22 is communicated with the second cavity 21, a second corrugated tube 42 is arranged in the third cavity 22, and an outer wall of the second corrugated tube 42 is attached to an inner wall of the piston rod 2; when the piston rod 2 and the piston 3 slide up and down in the cylinder body 1, hydraulic oil in the second cavity 21 flows into the third cavity 22 to push the second corrugated pipe 42 to move, so that the vibration reduction and energy consumption functions of the damper are enhanced; further, an end cover 12 is arranged at the lower end of the cylinder body, and the second corrugated pipe 42 is fixedly connected with the end cover 12; the damper is kept completely sealed, and leakage of hydraulic oil is prevented when the piston rod 2 and the piston 3 slide up and down in the cylinder body 1.
In this embodiment, preferably, bottom plates 6 are disposed at ends of the second cavity 21 and the third cavity 22 close to the valve core assembly 5, and the first bellows 41 and the second bellows 42 are respectively and fixedly connected to the corresponding bottom plates 6; the hydraulic oil flowing out of the valve core assembly 5 pushes the bottom plate 6 to drive the corrugated pipe to move.
In this embodiment, preferably, a guide ring 7 is disposed at the upper end of the cylinder 1, and the guide ring 7 is sleeved on the piston rod 2; the guide ring 7 seals the first cavity 11 and limits the up-and-down sliding space of the piston 3, and fixes the position of the piston rod 2 on the other hand, so that the piston rod is positioned on the axis of the damper, and the damper is good in stress and long in service life.
In this embodiment, preferably, a protective cover 8 for protecting the piston rod 2 is further fixedly disposed on the cylinder 1; further, a third bellows 43 is further disposed between the protective cover 8 and the piston rod 2, and an inner wall of the third bellows 43 is attached to an outer wall of the piston rod 2; a third bellows 43 is provided to ensure a seal between the piston rod 2 and the protective cover 8.
In this embodiment, preferably, a sewage draining groove 9 is provided on a side wall of the cylinder body 1, and the sewage draining groove 9 is communicated with the first cavity 11; the blowdown groove 9 can set up a plurality ofly along the lateral wall of cylinder body 1 interval, and it communicates with first cavity 11 for blowdown, exhaust and the oiling operation before the use and during maintenance make the installation maintenance more convenient, have further increased the life of attenuator.
The cylinder body 1, the piston rod 2 and the piston 3 are all made of high alloy steel structures; the utility model discloses an all-metal structure of attenuator adoption high alloy steel, whole attenuator do not have the spare part that reacts with any medium, and sealing performance is good, so do not have the ageing problem of sealing member, guarantee its operating stability, reliability. In addition, the damper material does not contain cobalt element, no irradiation residue is generated after irradiation, the irradiation resistance is good, the application range is wider, the damper material can be applied to the field of nuclear industry, and the maintenance is safer. The whole damper is subjected to nitriding treatment, so that the body hardness is increased, the wear resistance is good, and the use stability is higher.
In the using process, the damper of the utility model controls the damper by utilizing the back-and-forth flow of the hydraulic oil, requires the damper to be immobile or allow extremely small displacement under a large load, and protects the displacement of a main body to be less than 4 +/-0.5 mm when a single set of damper can bear the impact load of 500 +/-5 KN of the rated load within 0.05 s; when the non-impact low-speed movement is carried out and the speed is not more than 1.3mm/s, the low-speed damping is not more than 8000+ 200N. The two ends of the spherical hinge flange assembly are respectively connected with other parts by using a high-precision spherical hinge flange assembly, the hardness of the spherical hinge flange assembly is HRC (Rockwell hardness) 45-50 after being modulated by high alloy steel, the spherical surface is ground by using a high-precision numerical control grinding machine, and the deflection angle in any direction can reach 8 degrees after being assembled with the flange.
Various modifications and variations of the embodiments of the present invention may be made by those skilled in the art, and they are within the scope of the present invention provided they are within the scope of the claims and their equivalents.
What is not described in detail in the specification is prior art that is well known to those skilled in the art.
Claims (10)
1. A full seal hydraulic damper, comprising:
the cylinder body (1), wherein a first cavity (11) is formed in the cylinder body (1);
the piston rod (2), a piston (3) is arranged on the piston rod (2), the piston (3) is positioned in the first cavity (11) and can slide up and down in the first cavity (11), and a second cavity (21) is formed in one end of the piston rod (2) along the axial direction of the piston rod;
the first corrugated pipe (41), the first corrugated pipe (41) is arranged in the second cavity (21), and the outer wall of the first corrugated pipe (41) is attached to the inner wall of the piston rod (2).
2. A full seal hydraulic damper as defined in claim 1, wherein: the piston rod (2) is further internally provided with a valve core assembly (5), the valve core assembly (5) comprises a liquid inlet (51) and a liquid outlet (52), the liquid inlet (51) is communicated with the second cavity (21), and the liquid outlet (52) is communicated with the first cavity (11).
3. A full seal hydraulic damper as defined in claim 2, wherein: two valve core assemblies (5) in the piston rod (2) are arranged, and the two valve core assemblies (5) are symmetrically arranged along the axis of the piston rod (2).
4. A full seal hydraulic damper as defined in claim 2, wherein: a third cavity (22) is formed in the other end of the piston rod (2) in the axial direction, the third cavity (22) is communicated with the second cavity (21), a second corrugated pipe (42) is arranged in the third cavity (22), and the outer wall of the second corrugated pipe (42) is attached to the inner wall of the piston rod (2).
5. A full seal hydraulic damper as defined in claim 4 wherein: an end cover (12) is arranged at the lower end of the cylinder body, and the second corrugated pipe (42) is fixedly connected with the end cover (12).
6. A full seal hydraulic damper as defined in claim 4 wherein: bottom plates (6) are arranged at one ends, close to the valve core assembly (5), in the second cavity (21) and the third cavity (22), and the first corrugated pipe (41) and the second corrugated pipe (42) are fixedly connected with the corresponding bottom plates (6) respectively.
7. A full seal hydraulic damper as defined in claim 1, wherein: the upper end of the cylinder body (1) is provided with a guide ring (7), and the guide ring (7) is sleeved on the piston rod (2).
8. A full seal hydraulic damper as defined in claim 1, wherein: the cylinder body (1) is further fixedly provided with a protective cover (8) used for protecting the piston rod (2).
9. A full seal hydraulic damper as defined in claim 8, wherein: the safety cover (8) with still be provided with third bellows (43) between piston rod (2), the inner wall of third bellows (43) and the outer wall laminating of piston rod (2).
10. A full seal hydraulic damper as defined in claim 1, wherein: be provided with blowdown groove (9) on the lateral wall of cylinder body (1), blowdown groove (9) with first cavity (11) intercommunication.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920761748.1U CN210178818U (en) | 2019-05-24 | 2019-05-24 | Full-sealed hydraulic damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920761748.1U CN210178818U (en) | 2019-05-24 | 2019-05-24 | Full-sealed hydraulic damper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210178818U true CN210178818U (en) | 2020-03-24 |
Family
ID=69834704
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920761748.1U Expired - Fee Related CN210178818U (en) | 2019-05-24 | 2019-05-24 | Full-sealed hydraulic damper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210178818U (en) |
-
2019
- 2019-05-24 CN CN201920761748.1U patent/CN210178818U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200324 |
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| CF01 | Termination of patent right due to non-payment of annual fee |