CN209875823U - Gas spring with built-in spring - Google Patents
Gas spring with built-in spring Download PDFInfo
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- CN209875823U CN209875823U CN201920055080.9U CN201920055080U CN209875823U CN 209875823 U CN209875823 U CN 209875823U CN 201920055080 U CN201920055080 U CN 201920055080U CN 209875823 U CN209875823 U CN 209875823U
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Abstract
The utility model provides an air spring with built-in spring, includes the air spring body, is equipped with first cylindrical spring and second cylindrical spring inside first cylinder body and the second cylinder body in the air spring body, and first cylindrical spring sets up in first cylinder body bottom, and under the normal condition, first cylindrical spring does not contact with first piston, and second cylindrical spring sets up in second cylinder body bottom, and under the normal condition, second cylindrical spring does not contact with the second piston. In use, when the piston rod bears pressure, inert gas in the first cylinder body and the inert gas in the second cylinder body compress simultaneously, buffer simultaneously to the piston rod two-stage, when compressed gas reaches the limit soon, buffer is assisted to built-in cylindrical spring, and when reaching the limit, it is spacing to carry out machinery through the height after the spring itself completely compresses, prevent further retraction, reach the purpose of protection air spring, increase the buffering effect of air spring simultaneously, avoid the emergence of unexpected potential safety hazard.
Description
Technical Field
The utility model belongs to the technical field of the spring, especially, relate to an air spring with innerspring.
Background
The gas spring is an industrial accessory which can play a role in supporting, buffering, braking, height adjustment, angle adjustment and the like, and is generally applied to the fields of automobiles, aerospace, medical fitness equipment and the like. It is generally composed of the following parts: the device comprises a pressure cylinder body, a piston rod, a piston, a sealing guide sleeve, a filler, a joint and the like. The filling in the pressure cylinder of the gas spring has a certain pressure, typically several or several tens of times higher than atmospheric pressure. The existing multi-stage gas spring is in buffering, wherein the existing gas spring is easy to leak gas or lose efficacy when the pressure is too large, so that the gas spring is easy to damage when buffering is carried out, and meanwhile, the potential safety hazard is caused.
SUMMERY OF THE UTILITY MODEL
To the problem in the background, the utility model aims to provide an air spring with innerspring.
In order to achieve the purpose, the utility model provides an air spring with a built-in spring, which comprises a first cylinder body, a piston rod, a first piston and a first sealing guide sleeve; the piston rod is arranged in the first cylinder body, the first piston is arranged at the lower end of the piston rod, the first sealing guide sleeve is arranged on the inner wall of the first cylinder body, the second cylinder body is arranged on the outer side of the first cylinder body, the second piston is arranged at the lower end of the first cylinder body, part of the first cylinder body is arranged in the second cylinder body, the second sealing guide sleeve is arranged on the inner side of the second cylinder body, and inert gas is arranged in the first cylinder body and the second cylinder body; the cylinder piston is characterized in that a first cylindrical spring and a second cylindrical spring are arranged inside the first cylinder body and the second cylinder body, the first cylindrical spring is arranged at the bottom of the first cylinder body, the first cylindrical spring is not in contact with the first piston under a normal state, the second cylindrical spring is arranged at the bottom of the second cylinder body, and the second cylindrical spring is not in contact with the second piston under the normal state.
Preferably, the height of the fully compressed first cylindrical spring is not lower than the height between the first piston and the bottom of the first cylinder when the first cylinder has the maximum air pressure.
Preferably, the height of the second cylindrical spring after being completely compressed is not lower than the height between the second piston and the bottom of the second cylinder when the second cylinder is at the maximum air pressure.
Preferably, a first oil seal sleeve and a second oil seal sleeve are arranged in the first cylinder body and the second cylinder body, and lubricating oil is arranged in the oil seal sleeves.
Preferably, the second cylinder body side is provided with an air inlet, and the air inlet is provided with an airtight core.
Preferably, the first cylindrical spring and the second cylindrical spring are made of silicon-manganese spring steel wires, and the diameter of the spring steel wire of the second cylinder is larger than that of the first cylindrical spring steel wire.
The beneficial effects of the utility model are that: in use, when the piston rod bears pressure, inert gas in the first cylinder body and the inert gas in the second cylinder body compress simultaneously, buffer simultaneously to the piston rod two-stage, when compressed gas reaches the limit soon, buffer is assisted to built-in cylindrical spring, and when reaching the limit, it is spacing to carry out machinery through the height after the spring itself completely compresses, prevent further retraction, reach the purpose of protection air spring, increase the buffering effect of air spring simultaneously, avoid the emergence of unexpected potential safety hazard.
Drawings
Fig. 1 is a schematic structural view of a gas spring with an internal spring according to the present invention.
Description of the drawings: 1-a piston rod; 2-a first piston; 3-a second cylinder body; 4-a second piston; 5-a first sealing guide sleeve; 6-a second sealing guide sleeve; 7-a first oil jacket; 8-a second oil jacket; 9-a first cylinder; 10-a second oil jacket; 11-well; 12-a first cylindrical spring; 13-an air inlet; 14-second cylinder spring.
Detailed Description
In order to make the technical solution of the present invention more apparent, the present invention will be further described in detail with reference to the following examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
A gas spring with a built-in spring comprises a first cylinder 9, a piston rod 1, a first piston 2 and a first sealing guide sleeve 5; the piston rod 1 is arranged in the first cylinder 9, the first piston 2 is arranged at the lower end of the piston rod 1, the first sealing guide sleeve 5 is arranged on the inner wall of the first cylinder 9, the second cylinder 3 is arranged on the outer side of the first cylinder 9, the second piston 4 is arranged at the lower end of the first cylinder 9, part of the first cylinder 9 is arranged in the second cylinder 3, the second sealing guide sleeve 6 is arranged on the inner side of the second cylinder 3, and inert gas is arranged in the first cylinder 9 and the second cylinder 3; first cylinder spring 12 and second cylinder spring 14 are arranged in first cylinder 9 and second cylinder 3, first cylinder spring 12 is arranged at the bottom of first cylinder 9, first cylinder spring 12 does not contact with first piston 2 under normal state, second cylinder spring 14 is arranged at the bottom of second cylinder 3, and second cylinder spring 14 does not contact with second piston 4 under normal state. When the buffering and shock absorption are needed, the first piston 2 compresses the inert gas in the first cylinder 9, the first cylinder 9 and the second piston 4 together compress the inert gas in the second cylinder 3, and the two actions occur simultaneously to play a role in buffering and shock absorption on the piston rod 1 and the connecting object. When the inert gas in the compression cylinder body reaches the maximum pressure, the built-in cylindrical spring is contacted with the piston, so that the built-in cylindrical spring performs auxiliary buffering, and when the limit value is reached, the piston is mechanically limited by the height of the completely compressed cylindrical spring to prevent further retraction, thereby achieving the purpose of protecting the gas spring,
in addition, the height of the first cylinder spring 12 after being completely compressed is not lower than the height of the first piston 2 and the bottom of the first cylinder 9 when the maximum air pressure is in the first cylinder 9. The height of the second cylindrical spring 14 after being completely compressed is not lower than the height between the second piston 4 and the bottom of the second cylinder 3 when the maximum air pressure is in the second cylinder 3. Therefore, when the internal air pressure reaches the maximum, the piston can be limited to move, and the safety of the air spring is protected.
In order to ensure the smoothness of the sliding of the piston rod 1 and the first cylinder 9 at the corresponding positions, the friction with the surroundings is reduced. A first oil seal sleeve 7 and a second oil seal sleeve 8 are arranged in the first cylinder 9 and the second cylinder 3, and lubricating oil is arranged in the oil seal sleeves. Therefore, the inert gas in the sealing device is sealed, and the phenomenon that the damping and buffering effect is reduced due to gas leakage is prevented.
In addition, the gas compressed inside the second cylinder 3 is subject to the weight of the first cylinder 9 and related components, and is prone to gas leakage. Therefore, an air inlet 13 is provided on the side surface of the second cylinder 3, and an airtight core is provided on the air inlet 13. Therefore, the buffer effect of the second cylinder 3 can be adjusted by maintaining at regular time, increasing the amount of the internal gas or adjusting the amount of the gas in the second cylinder 3 according to actual needs.
In order to ensure the buffering effect of the cylindrical spring, the first cylindrical spring 12 and the second cylindrical spring 14 are made of silicon-manganese spring steel wires. The second cylindrical spring 14 has a larger wire diameter than the first cylindrical spring 12 because the pressure not experienced in the second cylinder 3 is greater than the pressure experienced in the interior of the first cylinder 9.
The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all the equivalent structures or equivalent processes that are used in the specification and the attached drawings or directly or indirectly applied to other related technical fields are included in the patent protection scope of the present invention.
Claims (6)
1. A gas spring with a built-in spring comprises a first cylinder body, a piston rod, a first piston and a first sealing guide sleeve; the piston rod is arranged in the first cylinder body, the first piston is arranged at the lower end of the piston rod, the first sealing guide sleeve is arranged on the inner wall of the first cylinder body, the second cylinder body is arranged on the outer side of the first cylinder body, the second piston is arranged at the lower end of the first cylinder body, part of the first cylinder body is arranged in the second cylinder body, the second sealing guide sleeve is arranged on the inner side of the second cylinder body, and inert gas is arranged in the first cylinder body and the second cylinder body; the piston cylinder is characterized in that a first cylindrical spring and a second cylindrical spring are arranged inside the first cylinder body and the second cylinder body, the first cylindrical spring is arranged at the bottom of the first cylinder body, the first cylindrical spring is not in contact with the first piston under a normal state, the second cylindrical spring is arranged at the bottom of the second cylinder body, and the second cylindrical spring is not in contact with the second piston under the normal state.
2. A gas spring with an innerspring in accordance with claim 1, wherein: the first cylindrical spring and the second cylindrical spring are made of silicon-manganese spring steel wires, and the diameter of the second cylindrical spring steel wire is larger than that of the first cylindrical spring steel wire.
3. A gas spring with an innerspring in accordance with claim 2, wherein: the height of the first cylindrical spring after being completely compressed is not lower than the height of the first piston and the bottom of the first cylinder body when the first cylinder body is in the maximum air pressure state.
4. A gas spring with an innerspring as set forth in any of claims 1-3, wherein: the height of the second cylindrical spring after being completely compressed is not lower than the height of the second piston and the bottom of the second cylinder body when the second cylinder body is at the maximum air pressure.
5. A gas spring with an innerspring in accordance with claim 1, wherein; and a first oil seal sleeve and a second oil seal sleeve are arranged in the first cylinder body and the second cylinder body, and lubricating oil is arranged in the oil seal sleeves.
6. A gas spring with an innerspring in accordance with claim 1, wherein; and an air inlet is formed in the side surface of the second cylinder body, and an airtight core is arranged on the air inlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920055080.9U CN209875823U (en) | 2019-01-14 | 2019-01-14 | Gas spring with built-in spring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920055080.9U CN209875823U (en) | 2019-01-14 | 2019-01-14 | Gas spring with built-in spring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209875823U true CN209875823U (en) | 2019-12-31 |
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ID=68950611
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920055080.9U Active CN209875823U (en) | 2019-01-14 | 2019-01-14 | Gas spring with built-in spring |
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| Country | Link |
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| CN (1) | CN209875823U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113007263A (en) * | 2021-03-09 | 2021-06-22 | 机械工业第九设计研究院有限公司 | Buffer device |
-
2019
- 2019-01-14 CN CN201920055080.9U patent/CN209875823U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113007263A (en) * | 2021-03-09 | 2021-06-22 | 机械工业第九设计研究院有限公司 | Buffer device |
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