CN212272909U - Series damper based on fluid and compression principle - Google Patents
Series damper based on fluid and compression principle Download PDFInfo
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- CN212272909U CN212272909U CN202020267242.8U CN202020267242U CN212272909U CN 212272909 U CN212272909 U CN 212272909U CN 202020267242 U CN202020267242 U CN 202020267242U CN 212272909 U CN212272909 U CN 212272909U
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Abstract
The utility model relates to a serial damper based on fluid and compression principle, which comprises a fluid damper body; the compression chamber is divided into a liquid chamber and an air chamber by the moving member, and a communication mechanism is arranged between the liquid chamber and the bottom chamber of the fluid damper body; when the piston rod in the fluid damper body is stressed to drive the piston to move downwards to extrude the bottom cavity, hydraulic oil in the bottom cavity enters the liquid cavity and drives the moving piece to extrude the air cavity, so that the piston rod bears the reverse thrust when the moving piece compresses the air cavity. The acceleration of the downward sliding of the piston rod is slowed down, the descending speed of the piston rod is slowed down, and the damping effect of the damper is improved.
Description
Technical Field
The utility model relates to a serial-type attenuator based on fluid, compression principle.
Background
The damper is a device for providing motion resistance and consuming motion energy, various dampers (or shock absorbers) are applied to the industries of aerospace, aviation, war industry, firearms, automobiles and the like for damping vibration and energy by utilizing damping to absorb energy and shock, and after the seventies of the twentieth century, people gradually transfer the technologies to structural engineering such as buildings, bridges, railways and the like, so that the development is very rapid.
However, the existing damper performs damping through a single fluid, and the damping effect is not good.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is: the defects of the prior art are overcome, the serial damper based on the fluid and compression principles is provided, and the problem that the damping effect is poor due to the fact that damping is carried out through a single fluid in the prior art is solved.
The utility model provides a technical scheme that its technical problem adopted is: a serial damper based on fluid and compression principle comprises
A fluid damper body;
a compression chamber, and
the moving piece is arranged in the compression cavity and divides the compression cavity into a liquid cavity and an air cavity, and a communication mechanism is arranged between the liquid cavity and the bottom cavity of the fluid damper body so as to ensure that the liquid cavity and the bottom cavity are communicated in a two-way manner;
when the piston rod in the fluid damper body is stressed to drive the piston to move downwards to extrude the bottom cavity, hydraulic oil in the bottom cavity enters the liquid cavity and drives the moving piece to extrude the air cavity, so that the piston rod bears the reverse thrust when the moving piece compresses the air cavity.
Further, the moving member is rotatably arranged in the compression cavity:
a central shaft is fixedly arranged in the middle of the compression cavity, a fixing plate is arranged between the central shaft and the inner wall of the compression cavity, the inner end of the moving piece is rotatably connected with the central shaft, the outer end of the moving piece is in sliding sealing fit with the inner wall of the compression cavity, and a liquid cavity and an air cavity are respectively formed between the moving piece and two side surfaces of the fixing piece; the moving piece is suitable for rotating along with the injection of hydraulic oil into the liquid cavity so as to compress the air cavity.
Further, the moving part does the setting that reciprocates in the compression chamber:
the edge of the moving piece is in sliding sealing fit with the inner wall of the compression cavity, the lower end of the moving piece forms an air cavity, and the upper end of the moving piece forms a liquid cavity; the moving piece is suitable for moving downwards along with the hydraulic oil injected into the liquid cavity to compress the air cavity.
Further, the damper comprises a cylinder body and a sealing partition, the sealing partition is fixedly arranged in the cylinder body, the compression cavity is formed between the sealing partition and the cylinder bottom, and the communication mechanism is arranged on the sealing partition;
the top end of the cylinder body is fixedly provided with a sealing head, a working cavity of the fluid damper body is formed between the sealing head and the sealing separation part, a piston is arranged in the working cavity, and a bottom cavity is formed between the piston and the sealing separation part.
Furthermore, the communication mechanism is an oil through hole formed in the sealing spacer.
Further, the communication mechanism comprises an oil inlet hole and an oil return hole;
the oil inlet hole is provided with an extension valve which is suitable for being opened when the oil pressure in the bottom cavity reaches a preset value, so that the hydraulic oil in the bottom cavity can enter the liquid cavity in a one-way mode;
and a circulation valve is arranged in the oil return hole and is suitable for enabling hydraulic oil in the liquid cavity to flow into the bottom cavity in a one-way mode.
In still another aspect, a method of operating a damper is provided,
step S1; the piston rod of the damper is stressed to extrude out hydraulic oil;
step S2; the output hydraulic oil enters the liquid cavity of the compression cavity, and the liquid cavity expands to push the moving member to move so as to compress the air cavity, so that the piston rod bears the reverse thrust when the moving member compresses the air cavity.
The utility model has the advantages that:
the utility model discloses a attenuator through gaseous increaseing damping force in compression process, slows down the acceleration that the piston rod slided, slows down piston rod falling speed, has improved the damped effect of attenuator.
Drawings
The present invention will be further explained with reference to the accompanying drawings.
FIG. 1 is a perspective view of the damper of the present invention;
FIG. 2 is a half sectional view of the damper;
FIG. 3 is a half-sectional view of the damper compression chamber;
the hydraulic cylinder comprises a cylinder body 1, a cylinder body 2, a bottom connecting piece 3, a sealing head 4, a piston rod 5, a top connecting piece 6, a piston 61, a compression valve 62, a compensation valve 7, a sealing separation piece 71, an extension valve 72, a circulation valve 8, an upper cavity 9, a bottom cavity 91, hydraulic oil 10, a liquid cavity 11, a central shaft 12, a fixing plate 13, a moving piece 14, an air cavity 141, compressed air 15 and a compression cavity.
Detailed Description
The invention will now be further described with reference to specific embodiments. The drawings are simplified schematic diagrams only illustrating the basic structure of the present invention in a schematic manner, and thus show only the components related to the present invention.
Example one
As shown in fig. 1, a serial damper based on the fluid and compression principle includes a fluid damper body.
The fluid damper body adopts a conventional fluid damper and comprises a piston rod 4, a piston and a working cavity, wherein the upper end of the piston rod 4 is provided with a top connecting piece 5; the piston 6 separates the working chamber into an upper chamber 8 and a bottom chamber 9, the piston rod 4 extends out of the working chamber, the piston 6 is provided with a compression valve 61 and a compensation valve 62, when the piston 6 extrudes the bottom chamber 9 along with the stress of the piston rod 4, hydraulic oil 91 in the bottom chamber 9 can enter the upper chamber 8 through the compression valve 61, when the piston 6 extrudes the upper chamber 8 along with the stress of the piston rod 4, the hydraulic oil 91 in the upper chamber 8 can enter the bottom chamber 9 through the compensation valve 62, and the working principle of the conventional fluid damper is described.
In this embodiment, a compression chamber 15 is additionally provided, a moving member 13 is arranged in the compression chamber 15, the moving member 13 divides the compression chamber 15 into a liquid chamber 10 and an air chamber 14, and a communication mechanism is arranged between the liquid chamber 10 and a bottom chamber 9 of the fluid damper body, so that the liquid chamber 10 and the bottom chamber 9 are kept in bidirectional communication.
During operation, when the piston rod 4 is stressed to drive the piston 6 to move downwards to extrude the bottom cavity 9 in the fluid damper body, the hydraulic oil 91 in the bottom cavity 9 enters the liquid cavity 10 and drives the moving member 13 to extrude the air cavity 14, so that the piston rod 4 bears the reverse thrust when the moving member 13 compresses the air cavity 14, the gliding acceleration of the piston rod 4 is slowed down, the descending speed of the piston rod 4 is slowed down, and the damping effect is improved.
Example two
This embodiment is based on the first embodiment, and optionally, the moving member 13 is rotatably disposed in the compression cavity 15: as shown in fig. 2 and fig. 3, specifically, a central shaft 11 is fixedly disposed in the middle of the compression cavity 15, a fixing plate 12 is disposed between the central shaft 11 and the inner wall of the compression cavity 15, and the inner end of the moving member 13 is rotatably engaged with the central shaft 11, so that the moving member 13 rotates around the central shaft 11. The outer end of the moving part 13 is in sliding sealing fit with the inner wall of the compression cavity 15, and a liquid cavity 10 and an air cavity 14 are respectively formed between the moving part 13 and two side surfaces of the fixed part; the moving member 13 is suitable for being injected with hydraulic oil 91 along the liquid cavity 10 to rotate so as to compress the air cavity 14, the moving member 13 rotates to compress the air cavity 14, the compressed air expands to apply thrust to the moving member 13, the moving member 13 is driven to rotate in the opposite direction, the space of the liquid cavity 10 is reduced, the hydraulic oil 91 in the liquid cavity 10 flows back to the bottom cavity 9, the thrust is provided for the piston rod 4 and the piston 6, and the damping force of the piston rod 4 is improved.
EXAMPLE III
This embodiment is based on the first embodiment, and optionally, the moving member 13 is arranged to move up and down in the compression cavity 15: the moving part 13 of the embodiment is similar to a piston ring, the edge of the moving part 13 is in sliding sealing fit with the inner wall of the compression cavity 15, the lower end of the moving part 13 forms an air cavity 14, and the upper end of the moving part 13 forms a liquid cavity 10; the moving part 13 is suitable for moving downwards along with the hydraulic oil 91 injected into the liquid cavity 10 to compress the air cavity 14; through moving down to come compressed air chamber 14, compressed air expands and upwards exerts thrust to moving member 13, drives moving member 13 and upwards removes, when reducing the liquid chamber 10 space, flows back hydraulic oil 91 in the liquid chamber 10 to bottom chamber 9 in, provides thrust to piston rod 4 and piston 6, promotes the damping force of piston rod 4.
Example four
The present embodiment is based on the first embodiment and the second embodiment; in the present embodiment, as shown in fig. 2, the damper includes a cylinder body 1 and a sealing partition 7, a bottom connecting member 2 is disposed at the bottom of the cylinder body 1, the sealing partition 7 is fixedly disposed in the cylinder body 1, the compression chamber 15 is formed between the sealing partition 7 and the cylinder bottom, and the communicating mechanism is disposed on the sealing partition 7.
A sealing head 3 is fixedly arranged at the top end of the cylinder body 1, a working cavity of the fluid damper body is formed between the sealing head 3 and a sealing separation part 7, a piston 6 is arranged in the working cavity, a bottom cavity 9 is formed between the piston 6 and the sealing separation part 7, and an upper cavity 8 is formed between the piston 6 and the sealing head 3;
optionally, the communicating means is an oil through hole formed in the seal spacer 7. The oil passage hole is used for bi-directionally circulating hydraulic oil 91 between the bottom chamber 9 and the liquid chamber 10.
Optionally, the communication mechanism includes an oil inlet and an oil return; the oil inlet hole is provided with an extension valve 71, the extension valve 71 can be preset with a pressure value and is suitable for being opened when the oil pressure in the bottom cavity 9 reaches a preset value, so that the hydraulic oil 91 in the bottom cavity 9 enters the liquid cavity 10 in a one-way mode; set up flow valve 72 in the oil gallery, be suitable for with hydraulic oil 91 one-way inflow bottom chamber 9 in the liquid chamber 10, at this moment, piston rod 4 is moving down the in-process of extrusion bottom chamber 9, hydraulic oil 91 can not directly get into liquid chamber 10 from bottom chamber 9, just open the valve 71 that stretches after reaching the removal oil pressure to make hydraulic oil 91 get into liquid chamber 10, thereby come compression air chamber 14 through moving member 13, come to provide damping force for piston rod 4 with the help of air chamber 14 at last, promote the damping effect of whole attenuator.
The working principle of the damper of the present embodiment is as follows: the piston rod 4 is forced to move downwards, so that the piston head slides downwards to extrude the hydraulic oil 91 of the bottom cavity 9, the compression valve 61 on the piston 6 is opened, the hydraulic oil 91 in the bottom cavity 9 flows into the upper cavity 8 to perform buffer damping on the piston 6, the piston 6 continues to move downwards, the expansion valve 71 is opened when the pressure reaches a certain degree, the hydraulic oil 91 in the bottom cavity 9 is extruded into the liquid cavity 10 of the compression cavity 15, the volume of the liquid cavity 10 is expanded, the moving piece 13 is forced to rotate along the central shaft 11 to extrude the air cavity 14, the damping force of the air is increased in the compression process, the acceleration of the piston rod 4 sliding is reduced, the descending speed of the piston rod 4 is reduced, and the damping effect is improved.
Rely on the utility model discloses a damper makes piston rod 4 in addition to hydraulic oil 91 damping force, still obtains compressed air 141's damping force, has promoted the damping effect.
EXAMPLE five
Providing a working method of a damper, which is based on the damper of the embodiment, the damper is characterized in that a compression cavity 15 is added, a moving piece 13 is arranged in the compression cavity 15, and the compression cavity 15 is divided into an air cavity 14 and a liquid cavity 10;
step S1; the damper piston rod 4 is forced to extrude and discharge the hydraulic oil 91;
step S2; the output hydraulic oil 91 enters the liquid cavity 10 of the compression cavity 15, and the liquid cavity 10 expands to push the moving member 13 to move so as to compress the air cavity 14, so that the piston rod 4 bears the reverse thrust when the moving member 13 compresses the air cavity 14.
By means of the operation method, in the process that the damper piston rod 4 moves downwards under force, damping thrust can be obtained through the compressed air cavity 14, so that the piston rod 4 obtains the damping force of the compressed air 141 besides the damping force of the hydraulic oil 91, and the damping effect is improved.
In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (6)
1. A serial damper based on fluid and compression principles is characterized by comprising
A fluid damper body;
a compression chamber, and
the moving piece is arranged in the compression cavity and divides the compression cavity into a liquid cavity and an air cavity, and a communication mechanism is arranged between the liquid cavity and the bottom cavity of the fluid damper body so as to ensure that the liquid cavity and the bottom cavity are communicated in a two-way manner;
when the piston rod in the fluid damper body is stressed to drive the piston to move downwards to extrude the bottom cavity, hydraulic oil in the bottom cavity enters the liquid cavity and drives the moving piece to extrude the air cavity, so that the piston rod bears the reverse thrust when the moving piece compresses the air cavity.
2. The in-line fluid compression based damper according to claim 1,
the moving piece is rotatably arranged in the compression cavity;
a central shaft is fixedly arranged in the middle of the compression cavity, a fixing plate is arranged between the central shaft and the inner wall of the compression cavity, the inner end of the moving piece is rotatably connected with the central shaft, the outer end of the moving piece is in sliding sealing fit with the inner wall of the compression cavity, and a liquid cavity and an air cavity are respectively formed between the moving piece and two side surfaces of the fixing piece; the moving piece is suitable for rotating along with the injection of hydraulic oil into the liquid cavity so as to compress the air cavity.
3. The in-line fluid compression based damper according to claim 1,
the moving piece moves up and down in the compression cavity;
the edge of the moving piece is in sliding sealing fit with the inner wall of the compression cavity, the lower end of the moving piece forms an air cavity, and the upper end of the moving piece forms a liquid cavity; the moving piece is suitable for moving downwards along with the hydraulic oil injected into the liquid cavity to compress the air cavity.
4. The fluid, compression principle based in-line damper according to claim 2 or 3 wherein said damper comprises a cylinder body and a seal spacer fixedly disposed within the cylinder body, said seal spacer forming said compression chamber with the cylinder bottom, said communication means being disposed in the seal spacer;
the top end of the cylinder body is fixedly provided with a sealing head, a working cavity of the fluid damper body is formed between the sealing head and the sealing separation part, a piston is arranged in the working cavity, and a bottom cavity is formed between the piston and the sealing separation part.
5. A fluid, compression principle based in-line damper according to claim 4 wherein said communication means is an oil through hole provided in the seal spacer.
6. The serial type damper based on fluid and compression principle as claimed in claim 4, wherein said communication mechanism comprises an oil inlet hole and an oil return hole;
the oil inlet hole is provided with an extension valve which is suitable for being opened when the oil pressure in the bottom cavity reaches a preset value, so that the hydraulic oil in the bottom cavity can enter the liquid cavity in a one-way mode;
and a circulation valve is arranged in the oil return hole and is suitable for enabling hydraulic oil in the liquid cavity to flow into the bottom cavity in a one-way mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020267242.8U CN212272909U (en) | 2020-03-06 | 2020-03-06 | Series damper based on fluid and compression principle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020267242.8U CN212272909U (en) | 2020-03-06 | 2020-03-06 | Series damper based on fluid and compression principle |
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| Publication Number | Publication Date |
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| CN212272909U true CN212272909U (en) | 2021-01-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020267242.8U Active CN212272909U (en) | 2020-03-06 | 2020-03-06 | Series damper based on fluid and compression principle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113651238A (en) * | 2021-07-15 | 2021-11-16 | 巨力索具研究院(天津)有限公司 | Guiding, positioning and buffering device for integral hoisting of offshore wind turbine generator system |
-
2020
- 2020-03-06 CN CN202020267242.8U patent/CN212272909U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113651238A (en) * | 2021-07-15 | 2021-11-16 | 巨力索具研究院(天津)有限公司 | Guiding, positioning and buffering device for integral hoisting of offshore wind turbine generator system |
| CN113651238B (en) * | 2021-07-15 | 2024-06-07 | 巨力索具研究院(天津)有限公司 | Guiding positioning and buffering device for integral hoisting of offshore wind turbine generator |
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