CN216143003U - Hydraulic cylinder buffer device - Google Patents
Hydraulic cylinder buffer device Download PDFInfo
- Publication number
- CN216143003U CN216143003U CN202121417424.XU CN202121417424U CN216143003U CN 216143003 U CN216143003 U CN 216143003U CN 202121417424 U CN202121417424 U CN 202121417424U CN 216143003 U CN216143003 U CN 216143003U
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- China
- Prior art keywords
- cylinder
- spring
- piston
- hydraulic cylinder
- cylindrical cavity
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- 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.)
- Expired - Fee Related
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- 239000000872 buffer Substances 0.000 title claims abstract description 10
- 230000003139 buffering effect Effects 0.000 description 15
- 230000005540 biological transmission Effects 0.000 description 4
- 239000003921 oil Substances 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
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Abstract
The utility model discloses a hydraulic cylinder buffer device, which comprises a hydraulic cylinder and a piston arranged in the inner cavity of the hydraulic cylinder in a sliding way, the top surface of the piston is fixedly provided with a piston rod, the top surface of the piston is fixedly provided with a cylindrical cavity, the top surface of the piston is fixedly provided with a first spring which is arranged outside the cylindrical cavity, a cylinder is slidably arranged in the cylindrical cavity, a second spring is fixedly arranged at the bottom of the cylindrical cavity, a butterfly spring is fixedly arranged at the top of the inner cavity of the hydraulic cylinder, a hollow cylinder is fixedly arranged at one end of the butterfly spring, which is far away from the hydraulic cylinder, one end of the hollow cylinder close to the belleville spring is fixedly provided with a third spring, and the inside of the hollow cylinder is provided with a connecting cylinder in a sliding way, four springs with different elastic coefficients are structurally combined to buffer the impact of the piston on the bottom of the hydraulic cylinder.
Description
Technical Field
The utility model relates to the technical field of hydraulic cylinders, in particular to a hydraulic cylinder buffer device.
Background
The hydraulic transmission is a transmission mode for energy transmission and control by taking liquid as a working medium, the hydraulic cylinder is the most commonly used element in the hydraulic transmission, however, when the hydraulic cylinder moves to the stroke end, the terminal speed of the piston rod is high, the piston and the cylinder body collide under the action of inertia force and hydraulic force, the noise is high, and the service life of the hydraulic cylinder is greatly reduced.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a hydraulic cylinder buffer device to solve the problems that when a hydraulic cylinder provided by the background technology moves to the stroke end, a piston rod impacts a cylinder body to generate noise under the action of inertia force and hydraulic pressure, and the service life of the hydraulic cylinder is shortened.
In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a pneumatic cylinder buffer, includes pneumatic cylinder and the piston of slidable mounting at the pneumatic cylinder inner chamber, the top surface fixed mounting of piston has the piston rod, piston top surface fixed mounting has cylindrical cavity, piston top surface fixed mounting has first spring, first spring is in the outside of cylindrical cavity, the inside slidable mounting of cylindrical cavity has the cylinder, cylindrical cavity bottom fixed mounting has the second spring.
Preferably, a belleville spring is fixedly mounted at the top of the inner cavity of the hydraulic cylinder, a hollow cylinder is fixedly mounted at one end, far away from the hydraulic cylinder, of the belleville spring, a third spring is fixedly mounted at one end, close to the belleville spring, of the hollow cylinder, and a connecting cylinder is slidably mounted inside the hollow cylinder.
Preferably, one end of the connecting cylinder, which is far away from the third spring, is fixedly provided with a cylinder groove.
Preferably, the side surface of the bottom of the hydraulic cylinder is provided with an oil inlet hole.
Compared with the prior art, the utility model has the beneficial effects that:
1. the utility model gradually buffers and absorbs energy through the characteristic that the spring has buffering and energy absorbing functions, when the piston moves upwards to the top, the first spring arranged on the piston touches the cylindrical groove to perform first buffering and energy absorbing, when the first spring is compressed, the cylinder touches the cylindrical groove, because the bottom of the cylinder is provided with the second spring, the second spring starts to be compressed to complete second buffering and energy absorbing, the cylindrical cavity and the cylinder already enter the cylindrical groove, the hydraulic pressure force borne by the cylindrical groove is transmitted to the third spring through the connecting cylinder, the third spring starts to be compressed to complete third buffering and energy absorbing, the cylindrical groove touches the hollow cylinder, the hydraulic pressure force is transmitted to the belleville spring which is in contact with the hollow cylinder to perform fourth buffering and energy absorbing, the energy absorbing is gradually buffered and absorbed from weak to strong through four stages, the buffering and energy absorbing of the hydraulic cylinder are completed, and the problem that when the hydraulic cylinder proposed in the background technology moves to the stroke end is solved, the terminal speed of the piston rod is high, the piston and the cylinder body collide under the action of inertia force and hydraulic force, the noise is high, and the service life of the hydraulic cylinder is greatly reduced.
Drawings
FIG. 1 is a schematic view of the structure of the present invention.
In the figure: 1. a hydraulic cylinder; 2. a piston; 3. a piston rod; 4. a cylindrical cavity; 5. a first spring; 6. A cylinder; 7. a second spring; 8. a belleville spring; 9. a hollow cylinder; 10. a third spring; 11. a connecting cylinder; 12. a cylindrical groove; 13. an oil inlet hole.
Detailed Description
In order to solve the problems that when the hydraulic cylinder provided by the background technology moves to the stroke end, the terminal speed of a piston rod is high, the piston and a cylinder body collide under the action of inertia force and hydraulic pressure, the noise is high, and the service life of the hydraulic cylinder is greatly shortened, the embodiment of the utility model provides a hydraulic cylinder buffer device. The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Examples
Referring to fig. 1, the embodiment provides a hydraulic cylinder buffering device, which includes a hydraulic cylinder 1 and a piston 2 slidably mounted in an inner cavity of the hydraulic cylinder 1, wherein a piston rod 3 is fixedly mounted on a top surface of the piston 2, a cylindrical cavity 4 is fixedly mounted on a top surface of the piston 2, a first spring 5 is fixedly mounted on a top surface of the piston 2, the first spring 5 is located outside the cylindrical cavity 4, a cylinder 6 is slidably mounted inside the cylindrical cavity 4, and a second spring 7 is fixedly mounted at the bottom of the cylindrical cavity 4.
When the piston 2 moves upwards, because the elastic coefficient of the first spring 5 is smaller than that of the second spring 7, when the first spring 5 is compressed, the second spring 7 still does not move until the second spring 7 starts to be compressed after the first spring 5 is completely compressed, at this time, the first stage buffering is finished, and the second stage buffering is started.
Wherein, 1 inner chamber top fixed mounting of pneumatic cylinder has disc spring 8, and disc spring 8 is because the elastic coefficient is the biggest, consequently as the buffering of fourth stage, and disc spring 8 keeps away from the fixed hollow cylinder 9 that is equipped with of one end of pneumatic cylinder 1, and hollow cylinder 9 is close to the one end fixed mounting of disc spring 8 has third spring 10, and hollow cylinder 9 inside slidable mounting has connecting cylinder 11, and the one end fixed mounting that connecting cylinder 11 kept away from third spring 10 has cylindrical groove 12.
When the cylinder 6 touches the cylinder groove 12, the second spring 7 at the bottom of the cylinder 6 starts to be compressed, until after being completely compressed, the hydraulic force which has been relieved by a large amount is transmitted to the third spring 10 at one end of the connecting cylinder 11 and inside the hollow cylinder 9 through the cylindrical groove 12 and the connecting cylinder 11 fixedly installed in the cylindrical groove 12, at this time, the second stage buffering is finished, the third stage buffering is started, after the third spring 10 is compressed, the cylindrical groove 12 moves upward, and after the third spring 10 is completely compressed, the cylindrical groove 12 touches the hollow cylinder 9, and at this time, and (3) finishing the buffering in the third stage, starting the buffering in the fourth stage, enabling the disc spring 8 in the last stage to have the largest elastic coefficient, enabling the piston 2 to tend to be stable in the last stage, and enabling the elastic coefficients of the four groups of springs to be continuously increased to enable the hydraulic pressure to be weaker and weaker, so that the buffering of the hydraulic cylinder 1 is completed.
Wherein, the side of the bottom of the hydraulic cylinder 1 is provided with an oil inlet hole 13, and hydraulic oil is input from the oil inlet hole 13 to provide hydraulic pressure for the hydraulic cylinder 1.
Claims (4)
1. The utility model provides a pneumatic cylinder buffer, includes pneumatic cylinder (1) and slidable mounting piston (2) at pneumatic cylinder (1) inner chamber, the top surface fixed mounting of piston (2) has piston rod (3), its characterized in that: piston (2) top surface fixed mounting has cylindrical cavity (4), piston (2) top surface fixed mounting has first spring (5), first spring (5) are in the outside of cylindrical cavity (4), the inside slidable mounting of cylindrical cavity (4) has cylinder (6), cylindrical cavity (4) bottom fixed mounting has second spring (7).
2. A cylinder damper assembly as claimed in claim 1, wherein: pneumatic cylinder (1) inner chamber top fixed mounting has disc spring (8), disc spring (8) keep away from the one end fixed mounting that pneumatic cylinder (1) is equipped with hollow cylinder (9), the one end fixed mounting that hollow cylinder (9) are close to disc spring (8) has third spring (10), hollow cylinder (9) inside slidable mounting has connection cylinder (11).
3. A cylinder damper assembly as claimed in claim 2, wherein: and a cylindrical groove (12) is fixedly arranged at one end of the connecting cylinder (11) far away from the third spring (10).
4. A cylinder damper assembly as claimed in claim 1, wherein: and an oil inlet hole (13) is formed in the side surface of the bottom of the hydraulic cylinder (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121417424.XU CN216143003U (en) | 2021-06-24 | 2021-06-24 | Hydraulic cylinder buffer device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121417424.XU CN216143003U (en) | 2021-06-24 | 2021-06-24 | Hydraulic cylinder buffer device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216143003U true CN216143003U (en) | 2022-03-29 |
Family
ID=80802328
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121417424.XU Expired - Fee Related CN216143003U (en) | 2021-06-24 | 2021-06-24 | Hydraulic cylinder buffer device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216143003U (en) |
-
2021
- 2021-06-24 CN CN202121417424.XU patent/CN216143003U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220329 |