CN220227637U - Damper idle stroke free device - Google Patents
Damper idle stroke free device Download PDFInfo
- Publication number
- CN220227637U CN220227637U CN202321919452.0U CN202321919452U CN220227637U CN 220227637 U CN220227637 U CN 220227637U CN 202321919452 U CN202321919452 U CN 202321919452U CN 220227637 U CN220227637 U CN 220227637U
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- piston
- cylinder body
- oil
- damper
- working piston
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- 238000007789 sealing Methods 0.000 claims description 9
- 238000013016 damping Methods 0.000 abstract description 28
- 230000000694 effects Effects 0.000 abstract description 4
- 230000003139 buffering effect Effects 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- Fluid-Damping Devices (AREA)
Abstract
The utility model relates to the technical field of dampers, in particular to a damper idle stroke free device. The technical proposal comprises: the hydraulic cylinder comprises a cylinder body, a connector and a working piston, wherein the working piston is slidably connected in the cylinder body, a piston rod is fixed on the working piston, the end part of the piston rod penetrates through the end part of the cylinder body and is fixed with the connector, a group of piston holes are formed in the working piston, electric control gate valves are all installed in the piston holes, and a controller electrically connected with the electric control gate valves is installed outside the cylinder body. According to the utility model, the electric control gate valves capable of being freely closed are arranged in the plurality of piston holes on the working piston, the damping force of the working piston in movement is controlled through the closing and opening of the electric control gate valves, and the working piece of the damper is protected by providing smaller damping force at the initial stage of the stroke, so that the idle stroke is not required, and the damping effect is improved.
Description
Technical Field
The utility model relates to the technical field of dampers, in particular to a damper idle stroke free device.
Background
The damper is a device capable of generating motion damping force inside, and generates reverse resistance in the reverse direction of the motion of an object, so that the purpose of buffering and damping is achieved.
The idle stroke of the damper means that no damping force is generated at the initial stage of the movement of the working piston of the damper, so that protection is realized, however, no resistance effect exists at the initial stage of the damper due to the occurrence of the idle stroke, so that the buffering effect is reduced, and therefore, an external accessory of the damper is required to be designed, and the occurrence of the idle stroke is avoided under the condition of ensuring the safety and stability of a mechanical system of the damper.
Disclosure of Invention
The utility model aims to solve the problems in the background art and provides a damper idle stroke free device.
The technical scheme of the utility model is as follows: the damper non-idle stroke device comprises a cylinder body, a connector and a working piston, wherein the working piston is slidably connected in the cylinder body, a piston rod is fixed on the working piston, the end part of the piston rod penetrates through the end part of the cylinder body and is fixed with the connector, a group of piston holes are formed in the working piston, electric control gate valves are arranged in the piston holes, and a controller electrically connected with the electric control gate valves is arranged outside the cylinder body.
Preferably, a return spring is arranged between the connector and the end part of the cylinder body, so that the connector can be reset after being pressed.
Preferably, the cylinder body is divided into an oil cavity and an inflation cavity through a floating piston, the working piston is connected in the oil cavity in a sliding mode, an oil filling assembly is arranged at the outer side of the cylinder body and at a position corresponding to the oil cavity, damping oil is filled into the oil cavity, the filling density of the damping oil in the oil cavity can be reduced, and the condition that damping force cannot be provided due to the fact that the filling density of the damping oil in the oil cavity is reduced can be reduced.
Preferably, the oil charging assembly comprises an oil storage sleeve and an air pressure sensor, the air pressure sensor is installed in the air charging cavity, the oil storage sleeve is fixed on the outer side of the cylinder body, one side of the end portion of the oil storage sleeve, which is close to the cylinder body, is of an opening structure, an inlet and outlet hole is formed in the side wall of the cylinder body and aligned with the opening of the oil storage sleeve, a sealing piston is connected in the oil storage sleeve in a sliding manner, and damping oil can enter and discharge from the oil storage sleeve through the inlet and outlet hole by utilizing the sliding of the sealing piston.
Preferably, an electric telescopic cylinder for driving the sealing piston to slide is arranged at the end part of the oil storage sleeve, and an actuator electrically connected with the electric telescopic cylinder and the air pressure sensor is arranged on the oil storage sleeve, and the air pressure change in the air filling cavity is monitored through the air pressure sensor to drive the corresponding electric telescopic cylinder.
Compared with the prior art, the utility model has the following beneficial technical effects: the electric control gate valves which can be freely closed are arranged in the plurality of piston holes on the working piston, the damping force of the working piston during movement is controlled by closing and opening the electric control gate valves, the working piece of the damper is protected by providing smaller damping force at the initial stage of the stroke, the idle stroke is not required, and the damping effect is improved.
Drawings
FIG. 1 is a schematic view showing an internal structure of a cylinder according to a first embodiment of the present utility model;
FIG. 2 is a schematic view showing a combination structure of a piston rod and a working piston according to an embodiment of the present utility model;
fig. 3 is a schematic diagram of an internal structure of a cylinder in a second embodiment of the present utility model.
Reference numerals: 1. a cylinder; 11. a floating piston; 12. an oil chamber; 13. an air-filling cavity; 14. an air pressure sensor; 17. an inlet and outlet hole; 2. a connector; 3. a piston rod; 4. a return spring; 5. a working piston; 51. a piston bore; 52. an electric control gate valve; 6. a controller; 7. an oil storage jacket; 71. a sealing piston; 72. an electric telescopic cylinder; 73. an actuator.
Detailed Description
The technical scheme of the utility model is further described below with reference to the attached drawings and specific embodiments.
Example 1
As shown in fig. 1-2, the damper non-idle stroke device provided by the utility model comprises a cylinder body 1, a connector 2 and a working piston 5, wherein the working piston 5 is slidably connected in the cylinder body 1, a piston rod 3 is fixed on the working piston 5, the end part of the piston rod 3 penetrates through the end part of the cylinder body 1 and is fixed with the connector 2, a group of piston holes 51 are formed in the working piston 5, electric control gate valves 52 are arranged in the piston holes 51, a controller 6 electrically connected with the electric control gate valves 52 is arranged on the outer side of the cylinder body 1, and a return spring 4 is arranged between the connector 2 and the end part of the cylinder body 1.
In this embodiment, the whole device is connected to an external power supply, when the connector 2 is impacted, the working piston 5 slides in the cylinder 1, at this time, damping oil in the cylinder 1 flows through the piston holes 51 to generate damping force, so as to achieve the purpose of buffering, in this process, the more the number of the piston holes 51 or the larger the aperture is, the smaller the damping force generated by the piston holes 51 is, and the larger the damping force generated by the piston holes is, so that in the early stage of compression, the electric control gate valve 52 in the piston holes 51 can be fully opened by the control of the controller 6, the damping force is reduced, the impact of the external impact on the workpiece in the damper main body is reduced, the normal operation of the damper is ensured, a certain damping force is generated, and after the initial movement is finished, the electric control gate valve 52 can be closed, only one or a small number of piston holes 51 are left open, the damping force can be increased, and the better buffering effect is achieved.
Example two
As shown in fig. 3, the difference from the first embodiment is that the interior of the cylinder 1 is divided into an oil chamber 12 and an air charging chamber 13 by a floating piston 11, a working piston 5 is slidably connected in the oil chamber 12, and an oil charging assembly is provided outside the cylinder 1 and at a position corresponding to the oil chamber 12.
The oil charging assembly comprises an oil storage sleeve 7 and an air pressure sensor 14, the air pressure sensor 14 is arranged in an air charging cavity 13, the oil storage sleeve 7 is fixed on the outer side of the cylinder body 1, the end part of the oil storage sleeve 7 is close to one side of the cylinder body 1 and is of an opening structure, an inlet and outlet hole 17 is formed in the side wall of the cylinder body 1 and aligned with the opening of the oil storage sleeve 7, a sealing piston 71 is connected in a sliding manner in the oil storage sleeve 7, an electric telescopic cylinder 72 for driving the sealing piston 71 to slide is arranged at the end part of the oil storage sleeve 7, and an actuator 73 electrically connected with the electric telescopic cylinder 72 and the air pressure sensor 14 is arranged on the oil storage sleeve 7.
In this embodiment, when the connector 2 is pressed to drive the working piston 5 to move, damping oil in the oil cavity 12 is extruded first, so that the floating piston 11 floats, therefore, the damping oil filling density in the oil cavity 12 is reduced at the initial stage of movement of the working piston 5 due to the increase of the space of the oil cavity 12, and finally no damping force is generated, so as to realize the protection of a damper workpiece, and meanwhile, the internal space of the air-filling cavity 13 is reduced, thereby causing the air pressure to rise, a signal is transmitted to the actuator 73 by using the air pressure sensor 14, and the sealing piston 71 is driven by the electric telescopic cylinder 72 to reciprocate, so that the damping oil in the oil storage sleeve 7 is quickly returned to the oil storage sleeve 7 after being injected into the oil cavity 12, and the damping oil filling density in the oil cavity 12 can be quickly restored when being injected into the oil cavity 12, so that a certain damping force can be provided at the initial stage of movement of the working piston 5, and the aim of improving the damping and buffering effects is achieved.
The above-described embodiments are merely a few preferred embodiments of the present utility model, and many alternative modifications and combinations of the above-described embodiments will be apparent to those skilled in the art based on the technical solutions of the present utility model and the related teachings of the above-described embodiments.
Claims (5)
1. The damper non-idle stroke device comprises a cylinder body (1), a connector (2) and a working piston (5), and is characterized in that: the working piston (5) is slidably connected in the cylinder body (1), a piston rod (3) is fixed on the working piston (5), the end part of the piston rod (3) penetrates through the end part of the cylinder body (1) and is fixed with the connector (2), a group of piston holes (51) are formed in the working piston (5), electric control gate valves (52) are arranged in the piston holes (51), and a controller (6) electrically connected with the electric control gate valves (52) is arranged on the outer side of the cylinder body (1).
2. The damper idle stroke free device according to claim 1, characterized in that a return spring (4) is mounted between the connecting head (2) and the end of the cylinder (1).
3. The damper idle stroke-free device according to claim 1, wherein the interior of the cylinder body (1) is divided into an oil cavity (12) and an air charging cavity (13) through a floating piston (11), the working piston (5) is slidably connected in the oil cavity (12), and an oil charging assembly is arranged outside the cylinder body (1) and at a position corresponding to the oil cavity (12).
4. A damper non-idle stroke device according to claim 3, wherein the oil filling assembly comprises an oil storage sleeve (7) and an air pressure sensor (14), the air pressure sensor (14) is arranged in the air filling cavity (13), the oil storage sleeve (7) is fixed on the outer side of the cylinder body (1), one side of the end part of the oil storage sleeve (7) close to the cylinder body (1) is of an opening structure, an inlet and outlet hole (17) is formed in the side wall of the cylinder body (1) and aligned with an opening of the oil storage sleeve (7), and a sealing piston (71) is connected in the oil storage sleeve (7) in a sliding manner.
5. The damper idle stroke free device according to claim 4, wherein an electric telescopic cylinder (72) for driving a sealing piston (71) to slide is mounted at the end of the oil storage sleeve (7), and an actuator (73) electrically connected with the electric telescopic cylinder (72) and the air pressure sensor (14) is mounted on the oil storage sleeve (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321919452.0U CN220227637U (en) | 2023-07-20 | 2023-07-20 | Damper idle stroke free device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321919452.0U CN220227637U (en) | 2023-07-20 | 2023-07-20 | Damper idle stroke free device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220227637U true CN220227637U (en) | 2023-12-22 |
Family
ID=89181786
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321919452.0U Active CN220227637U (en) | 2023-07-20 | 2023-07-20 | Damper idle stroke free device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220227637U (en) |
-
2023
- 2023-07-20 CN CN202321919452.0U patent/CN220227637U/en active Active
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