CN216742596U - Linear oil pressure buffer - Google Patents
Linear oil pressure buffer Download PDFInfo
- Publication number
- CN216742596U CN216742596U CN202220481578.3U CN202220481578U CN216742596U CN 216742596 U CN216742596 U CN 216742596U CN 202220481578 U CN202220481578 U CN 202220481578U CN 216742596 U CN216742596 U CN 216742596U
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- Prior art keywords
- piston
- cylinder body
- oil
- cavity
- groove
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- Expired - Fee Related
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- 239000000872 buffer Substances 0.000 title claims abstract description 18
- 238000007789 sealing Methods 0.000 claims description 8
- 238000009825 accumulation Methods 0.000 claims description 6
- 239000000428 dust Substances 0.000 claims description 5
- 229920000742 Cotton Polymers 0.000 claims description 4
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 10
- 230000003139 buffering effect Effects 0.000 abstract description 6
- 238000003825 pressing Methods 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 45
- 238000003860 storage Methods 0.000 description 5
- 239000006096 absorbing agent Substances 0.000 description 4
- 230000035939 shock Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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Abstract
The utility model relates to a linear oil pressure buffer, which comprises a cylinder body, a piston rod, a piston and a spring, wherein one end of the piston rod movably extends into the cylinder body to be connected with the piston, the other end of the piston rod extends out of the cylinder body, when the buffer has no external force, the inner cavity of the cylinder body is divided into an air pressure cavity and an oil pressure cavity through the piston, the oil pressure cavity comprises a conical cavity with the inner diameter gradually reduced from top to bottom and a piston cavity with the inner diameter identical to the outer diameter of the piston, a gap between the piston and the conical cavity is used as an oil passing gap, and an oil passing groove is arranged on the outer wall of the piston. According to the utility model, the inner cavity of the cylinder body is provided with the conical cavity with the inner diameter gradually reduced from top to bottom and the piston cavity with the inner diameter same as the outer diameter of the piston, the gap between the piston and the conical cavity is used as an oil passing gap, and in the process of pressing down the piston, the gap between the piston and the oil pressure cavity is gradually reduced, namely the oil passing amount is slowly reduced until the piston runs to the piston cavity with the outer diameter same as the outer diameter of the piston, so that the whole running process is stable, and the fluctuation in the buffering process can not occur.
Description
Technical Field
The utility model relates to the technical field of buffers, in particular to a linear oil pressure buffer.
Background
The working principle of the oil pressure buffer is that when an external moving object impacts the piston rod, the piston rod pushes the piston to move towards the tail part and gradually passes through the oil discharge hole on the inner pipe, the piston assembly can press hydraulic oil in the inner pipe to be discharged through the oil discharge hole, when the oil discharge hole is completely opened, oil is discharged most quickly, the oil discharge speed is gradually reduced along with the gradual closing of the oil discharge hole, and therefore the external moving object is gradually reduced from a certain speed to stop.
The hydraulic shock absorber having the above structure has two problems: 1. a plurality of oil discharge holes are required to be arranged, so that the hole position is difficult to machine, and the machining cost is high; 1. be provided with the interval between the oil drain hole, every time close an oil drain hole all can make the oil mass suddenly reduce to the buffering is undulant, causes the cushion effect unstable, and the buffering effect is not good.
SUMMERY OF THE UTILITY MODEL
In view of the deficiencies in the background art, the present invention provides a linear hydraulic shock absorber.
The technical scheme adopted by the utility model is as follows: the utility model provides a linear hydraulic buffer, includes cylinder body, piston rod, piston and spring, piston rod one end activity stretches into in the cylinder body with the piston connection, outside the other end stretches out the cylinder body, the inner chamber of cylinder body divide into air pressure chamber and oil pressure chamber through the piston, the oil pressure chamber is by the internal diameter from last to the toper chamber that reduces gradually down and the piston chamber that the internal diameter is the same with the external diameter of piston, clearance between piston and the toper chamber is as crossing the oil clearance, be equipped with the oil groove on the piston outer wall.
Furthermore, the oil passing groove is of an inverted V-shaped structure, and the bottom of the piston cavity is provided with an V-shaped convex edge matched with the oil passing groove.
Furthermore, a limiting step is arranged above the air compression cavity.
Furthermore, the bottom of the cylinder body is in threaded connection with a bottom cover, a spring base is arranged on the bottom cover, one end of the spring is connected with the piston, and the other end of the spring is connected with the spring base.
Furthermore, the outer wall of the cylinder body is provided with full threads, and the cylinder body is connected with a nut in a threaded manner.
Furthermore, a dustproof cover is covered on the upper end of the cylinder body, and an oil seal is arranged between the dustproof cover and the piston rod.
Further, still include the uide bushing of suit between piston rod and cylinder body, be equipped with seal groove and pressure accumulation groove on the uide bushing, be equipped with the sealing washer in the seal groove, be equipped with the pressure accumulation cotton in the pressure accumulation groove.
Furthermore, the taper of the conical cavity is 1-3 degrees.
The utility model has the beneficial effects that: according to the utility model, the inner cavity of the cylinder body is provided with the conical cavity with the inner diameter gradually reduced from top to bottom and the piston cavity with the inner diameter same as the outer diameter of the piston, the gap between the piston and the conical cavity is used as an oil passing gap, in the process of pressing down the piston, the gap between the piston and the oil pressure cavity is gradually reduced, namely the oil passing amount is slowly reduced until the piston runs to the piston cavity with the same outer diameter as the piston, the whole running process is stable, the fluctuation in the buffering process can not occur, the buffering effect is better and more stable, only one oil passing groove needs to be arranged on the outer wall of the piston, a plurality of oil passing holes do not need to be processed, and the production cost is reduced.
In addition to the above-described objects, features and advantages, the present invention has other objects, features and advantages.
The present invention will be described in further detail below with reference to the accompanying drawings.
Drawings
FIG. 1 is a schematic cross-sectional view of the present invention.
FIG. 2 is another schematic cross-sectional view of the present invention.
In FIGS. 1-2: 1. a cylinder body; 2. a piston rod; 3. a piston; 4. a spring; 5. an air pressure chamber; 6. an oil pressure chamber; 7. a tapered cavity; 8. a piston cavity; 9. an oil passing groove; 10. a rib shaped like a Chinese character 'ba'; 11. a limiting step; 12. a bottom cover; 13. a spring mount; 14. full thread; 15. a nut; 16. a dust cover; 17. oil sealing; 18. a guide sleeve; 19. a sealing groove; 20. a pressure storage tank; 21. a seal ring; 22. and (4) pressure storage cotton.
Detailed Description
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.
It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.
The utility model provides a linear oil buffer.
In this embodiment, referring to fig. 1-2, the linear hydraulic shock absorber includes a cylinder 1, a piston rod 2, a piston 3, and a spring 4, where one end of the piston rod movably extends into the cylinder to connect with the piston, and the other end extends out of the cylinder, an inner cavity of the cylinder is divided into an empty pressure cavity 5 and an oil pressure cavity 6 by the piston (as shown in fig. 1 and 2, the oil pressure cavity is generally located below a position of the shock absorber without external force), the oil pressure cavity includes a conical cavity 7 whose inner diameter gradually decreases from top to bottom and a piston cavity 8 whose inner diameter is the same as the outer diameter of the piston, a gap between the piston and the conical cavity serves as an oil passing gap, and an oil passing groove 9 is disposed on an outer wall of the piston.
Among the above-mentioned technical scheme, set up to the internal diameter from last to the toper chamber that reduces gradually and the piston chamber that the external diameter of internal diameter and piston is the same down through the inner chamber with the cylinder body, regard as the oil clearance with the clearance between piston and the toper chamber, push down the in-process at the piston, clearance between piston and the oil pressure chamber can reduce gradually, it can slowly reduce to cross the oil volume promptly, move the piston chamber the same with the piston external diameter until the piston, above whole operation process is steady, the surge process can not appear undulantly, the buffering effect is better more stable, and only need set up an oil groove on the piston outer wall can, need not to process a plurality of oilholes of crossing, and low in production cost.
The inner diameter of the piston cavity is the same as the outer diameter of the piston, namely, after the piston runs to the piston cavity, the piston and the outer wall of the piston cavity are attached to realize sealing, at the moment, the oil passing groove is arranged on the outer wall of the piston to continue to slow and pass oil until the oil passing groove is sealed with the 'splayed' rib.
Specifically, the oil passing groove is of an inverted V-shaped structure, and the bottom of the piston cavity is provided with an V-shaped rib 10 matched with the oil passing groove.
Among the above-mentioned technical scheme, the oil groove adopts "eight" style of calligraphy structure, makes the piston more see the transition gently between toper chamber and piston chamber.
Specifically, a limiting step 11 is arranged above the air compression cavity.
In the technical scheme, the maximum upward stroke of the piston is limited by arranging the limiting step.
Specifically, the bottom of the cylinder body is in threaded connection with a bottom cover 12, a spring base 13 is arranged on the bottom cover, one end of the spring is connected with the piston, and the other end of the spring is connected with the spring base; the outer wall of the cylinder body is provided with full threads 14, and the cylinder body is in threaded connection with a nut 15; the upper end of the cylinder body is covered with a dust cover 16, an oil seal 17 is arranged between the dust cover and the piston rod, and the taper of the conical cavity is 1-3 degrees.
Further, the piston rod type hydraulic cylinder further comprises a guide sleeve 18 sleeved between the piston rod and the cylinder body, a sealing groove 19 and a pressure storage groove 20 are arranged on the guide sleeve, a sealing ring 21 is arranged in the sealing groove, and pressure storage cotton 22 is arranged in the pressure storage groove.
The skilled person should understand that: although the present invention has been described in terms of the above embodiments, the inventive concept is not limited to the above embodiments, and any modifications using the inventive concept are intended to be included within the scope of the appended claims.
Claims (8)
1. The utility model provides a linear hydraulic buffer, includes cylinder body, piston rod, piston and spring, piston rod one end activity is stretched into in the cylinder body and is connected with the piston, and outside the other end stretched out the cylinder body, its characterized in that: the buffer is when no exogenic action, this moment the inner chamber of cylinder body divide into air pressure chamber and oil pressure chamber through the piston, the oil pressure chamber is from last to the toper chamber that reduces gradually down and the piston chamber that the internal diameter is the same with the external diameter of piston by the internal diameter, the clearance between piston and the toper chamber is regarded as crossing oily clearance, be equipped with the oil groove on the piston outer wall.
2. The linear oil buffer according to claim 1, characterized in that: the oil passing groove is of an inverted V-shaped structure, and the bottom of the piston cavity is provided with an V-shaped convex edge matched with the oil passing groove.
3. The linear oil buffer according to claim 1, characterized in that: and a limiting step is arranged above the air compression cavity.
4. The linear oil buffer according to claim 1, characterized in that: the bottom of the cylinder body is in threaded connection with a bottom cover, a spring base is arranged on the bottom cover, one end of the spring is connected with the piston, and the other end of the spring is connected with the spring base.
5. The linear oil buffer according to claim 1, characterized in that: the outer wall of the cylinder body is provided with full threads, and the cylinder body is in threaded connection with a nut.
6. The linear oil buffer according to claim 1, characterized in that: the upper end of the cylinder body is covered with a dust cover, and an oil seal is arranged between the dust cover and the piston rod.
7. The linear oil buffer according to claim 1, characterized in that: still including the uide bushing of suit between piston rod and cylinder body, be equipped with seal groove and pressure accumulation groove on the uide bushing, be equipped with the sealing washer in the seal groove, be equipped with the pressure accumulation cotton in the pressure accumulation groove.
8. The linear oil buffer according to claim 1, characterized in that: the taper of the conical cavity is 1-3 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220481578.3U CN216742596U (en) | 2022-03-07 | 2022-03-07 | Linear oil pressure buffer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220481578.3U CN216742596U (en) | 2022-03-07 | 2022-03-07 | Linear oil pressure buffer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216742596U true CN216742596U (en) | 2022-06-14 |
Family
ID=81922011
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220481578.3U Expired - Fee Related CN216742596U (en) | 2022-03-07 | 2022-03-07 | Linear oil pressure buffer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216742596U (en) |
-
2022
- 2022-03-07 CN CN202220481578.3U patent/CN216742596U/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 |
Granted publication date: 20220614 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |