CN215487384U - Wear-resisting hydraulic buffer - Google Patents
Wear-resisting hydraulic buffer Download PDFInfo
- Publication number
- CN215487384U CN215487384U CN202122181646.2U CN202122181646U CN215487384U CN 215487384 U CN215487384 U CN 215487384U CN 202122181646 U CN202122181646 U CN 202122181646U CN 215487384 U CN215487384 U CN 215487384U
- Authority
- CN
- China
- Prior art keywords
- wear
- pressure cylinder
- resistant
- cylinder
- adjusting rod
- Prior art date
- 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.)
- Active
Links
Images
Landscapes
- Fluid-Damping Devices (AREA)
Abstract
The utility model discloses a wear-resistant hydraulic buffer, which comprises a plunger cylinder, a pressure cylinder, an adjusting rod and a return spring, wherein two annular grooves are circumferentially distributed on the cylinder wall of the upper end of the pressure cylinder along a central axis, wear-resistant sliding strips are arranged in the annular grooves, and the plunger cylinder is separated from the pressure cylinder by the wear-resistant sliding strips; the upper end of the pressure cylinder is also provided with an annular groove for mounting a dustproof gasket and an O-shaped sealing ring; the lower end of the adjusting rod is provided with internal threads, and the adjusting rod is connected with the pressure cylinder bottom plate through bolts. The wear-resistant hydraulic buffer adopting the structure reduces the production of parts, reduces the production cost and improves the performance of the buffer.
Description
Technical Field
The utility model relates to the technical field of hydraulic buffers, in particular to a wear-resistant hydraulic buffer.
Background
The hydraulic buffer mainly comprises a pressure cylinder part, a plunger cylinder part, an adjusting rod, a return spring and other parts, wherein the plunger cylinder part is sleeved in the pressure cylinder part, and the return spring is sleeved on the plunger cylinder part. The plunger barrel component is connected to the inner hole of the bottom plate of the pressure cylinder component through threads at one end of the adjusting rod. The top of the pressure cylinder part is provided with a guide sleeve which is used for separating the friction between the plunger cylinder part and the pressure cylinder part and preventing the plunger cylinder part from being scratched when the buffer acts. The guide sleeve is mostly formed by casting gray iron, so that casting defects such as air holes, shrinkage porosity and the like are easy to occur, and the processing cost is higher.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a wear-resistant hydraulic buffer, which solves the problems that a guide part of the buffer is easy to have casting defects and high in manufacturing cost.
In order to achieve the purpose, the utility model provides the following technical scheme:
a wear-resistant hydraulic buffer comprises a plunger cylinder, a pressure cylinder, an adjusting rod and a return spring, wherein two annular grooves are circumferentially distributed on the cylinder wall of the upper end of the pressure cylinder along a central axis, wear-resistant sliding strips are arranged in the annular grooves, and the plunger cylinder is separated from the pressure cylinder through the wear-resistant sliding strips; the upper end of the pressure cylinder is also provided with an annular groove for mounting a dustproof gasket and an O-shaped sealing ring; the lower end of the adjusting rod is provided with internal threads, and the adjusting rod is connected with the pressure cylinder bottom plate through bolts.
Preferably, still set up the resistance to compression bed course on the top cap of a plunger section of thick bamboo, the resistance to compression bed course adopts the preparation of rubber material, and the resistance to compression bed course adopts barb buckle mode and top cap block.
Preferably, the wear-resistant slide bar is made of polytetrafluoroethylene with high wear resistance.
The wear-resistant hydraulic buffer adopting the structure reduces the production of parts, reduces the production cost, improves the performance of the buffer and successfully passes 100 continuous heavy-load tests to make a historical breakthrough on the series products of the buffer after a guide sleeve is eliminated.
Drawings
FIG. 1 is a cross-sectional view of a prior art hydraulic shock absorber;
FIG. 2 is a cross-sectional view of an embodiment of the present invention;
fig. 3 is an enlarged view of a portion a in fig. 2.
Reference numerals
1. A top cover; 2. a return spring; 3. a plunger barrel; 4. a guide sleeve; 5. a pressure cylinder; 6. Adjusting a rod; 7. a dust-proof gasket; 8. a bottom cover; 9. a thin nut; 10. a bolt; 11. a wear resistant slider; 12. and an O-shaped sealing ring.
Detailed Description
The technical scheme of the utility model is further explained by combining the drawings and the embodiment.
The wear-resistant hydraulic buffer comprises a plunger cylinder 3 and a pressure cylinder 5 which are mutually sleeved, wherein the bottom sides of the inside of the plunger cylinder and the inside of the pressure cylinder are connected through an adjusting rod 6, a reset spring 2 is sleeved on the periphery of the outside of the plunger cylinder, and the plunger cylinder 3 reciprocates up and down along the adjusting rod 6.
After the guide sleeve 4 is removed between the plunger barrel 3 and the pressure cylinder 5, the plunger barrel and the pressure cylinder are in direct contact, and because the two parts are made of the same material, the gap between the plunger barrel and the pressure cylinder is small (about 0.15mm), and the plunger barrel and the pressure cylinder rub against each other in the action process of the buffer, so that the buffer can not be normally reset. In the scheme, two annular grooves are circumferentially distributed on the wall of the upper end cylinder of the pressure cylinder 5 along the central axis, wear-resistant sliding strips 11 are installed in the annular grooves, and the plunger cylinder 3 and the pressure cylinder 5 are separated by the wear-resistant sliding strips 11. The wear-resistant slide bar 11 is made of polytetrafluoroethylene, and has high self-lubricating property and good wear-resistant and rust-proof properties.
In order to ensure the dust-proof and sealing performance, the upper end of the pressure cylinder 5 is also provided with an annular groove for installing a dust-proof gasket 7 and an O-shaped sealing ring 12 which are distributed on the upper side and the lower side of the first wear-resistant slide bar 11.
In the hydraulic buffer of the prior art, a plunger barrel 3 component is connected to an inner hole of a bottom plate of a pressure cylinder 5 component through threads at one end of an adjusting rod 6. The defects and shortcomings of the current installation mode are as follows: adjust pole 6 from taking the external screw thread, the hole ratio of bottom plate is less shallow, so the length of screw thread can not be too long during the design, can bulge the bottom plate bottom surface after too long and install steadily, and the nut that uses is thin nut 9, and joint strength is weak partially, if strike the screw thread that still can damage on adjusting pole 6 with pneumatic wrench, lead to 3 parts of plunger section of thick bamboo and 5 parts of pressure cylinder to break away from, hydraulic oil reveals, causes the product to become invalid.
In order to solve the problem that the threaded connection strength of the adjusting rod 6 is not enough, under the condition that the thickness of the bottom plate is not changed, the original external threads on the adjusting rod 6 are changed into internal threads, the depth of the threads is increased, the adjusting rod 6 and the bottom plate of the pressure cylinder 5 are connected through the high-strength bolt 10, impact is carried out through the pneumatic wrench, the threads cannot be affected, and the adjusting rod 6 and the bottom plate after installation are guaranteed to be perpendicular and an O-shaped sealing ring is flattened. Meanwhile, the thin nut 9 is replaced by a high-strength nut at the joint of the adjusting rod 6 and the bottom cover 8 of the plunger cylinder.
Still set up the resistance to compression bed course on plunger section of thick bamboo 3's top cap 1, the resistance to compression bed course adopts the preparation of rubber material, and the resistance to compression bed course adopts barb buckle mode and top cap block, cancels traditional bolted connection installation, and the installation is convenient with the dismantlement. When the buffer is impacted to the elevator bottom, the compression-resistant cushion layer can play the cushioning effect, and can also prevent the sealed position of the plunger cylinder 3 from entering dust and exploding.
In conclusion, the wear-resistant hydraulic buffer adopting the structure reduces the production of parts, reduces the production cost, improves the performance of the buffer, and has high connection strength between the adjusting rod and the pressure cylinder. The product successfully passes 100 times of continuous heavy load tests, and historical breakthrough is obtained on the series products of the buffer.
The above is a specific embodiment of the present invention, but the scope of the present invention should not be limited thereto. Any changes or substitutions that can be easily made by those skilled in the art within the technical scope of the present invention are included in the protection scope of the present invention, and therefore, the protection scope of the present invention is subject to the protection scope defined by the appended claims.
Claims (3)
1. The utility model provides a wear-resisting hydraulic buffer, includes a plunger section of thick bamboo, pressure cylinder, adjusts pole, reset spring, its characterized in that: two annular grooves are circumferentially distributed on the cylinder wall at the upper end of the pressure cylinder along the central axis, wear-resistant sliding strips are mounted in the annular grooves, and the plunger cylinder is separated from the pressure cylinder through the wear-resistant sliding strips; the upper end of the pressure cylinder is also provided with an annular groove for mounting a dustproof gasket and an O-shaped sealing ring; the lower end of the adjusting rod is provided with internal threads, and the adjusting rod is connected with the pressure cylinder bottom plate through bolts.
2. A wear-resistant hydraulic shock absorber according to claim 1, wherein: still set up the resistance to compression bed course on the top cap of a plunger section of thick bamboo, the resistance to compression bed course adopts the preparation of rubber material, and the resistance to compression bed course adopts barb buckle mode and top cap block.
3. A wear-resistant hydraulic shock absorber according to claim 1, wherein: the wear-resistant slide bar is made of polytetrafluoroethylene with high wear resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122181646.2U CN215487384U (en) | 2021-09-09 | 2021-09-09 | Wear-resisting hydraulic buffer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122181646.2U CN215487384U (en) | 2021-09-09 | 2021-09-09 | Wear-resisting hydraulic buffer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215487384U true CN215487384U (en) | 2022-01-11 |
Family
ID=79768727
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122181646.2U Active CN215487384U (en) | 2021-09-09 | 2021-09-09 | Wear-resisting hydraulic buffer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215487384U (en) |
-
2021
- 2021-09-09 CN CN202122181646.2U patent/CN215487384U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112342903B (en) | Energy-consuming variable-rigidity anti-seismic bridge stop block based on magnetorheological body | |
| CN215487384U (en) | Wear-resisting hydraulic buffer | |
| CN210770010U (en) | Buffer sealing bush of automobile air suspension device | |
| CN205533530U (en) | Throttle buffering hydro -cylinder with at bottom of integral type cushioned cylinder | |
| CN204664054U (en) | The powerful mechanical self-locking hydraulic cylinder of band buffering | |
| CN104632752A (en) | Novel hydraulic cylinder with buffer function | |
| CN203214880U (en) | Embedded combined sealing device | |
| CN206092780U (en) | Shock absorber hydraulic cushion system - structure | |
| CN202108917U (en) | Anti-impact airbag buffer | |
| CN203836184U (en) | Combination piston covered with rubber | |
| CN204610427U (en) | The piston rod cushion seal circle of Novel hydraulic cylinder | |
| CN209275924U (en) | A kind of novel elevator hydraulic bjuffer | |
| CN208184963U (en) | A kind of novel high-performance piston | |
| CN103009671A (en) | Ball head gap adjusting mechanism of high-speed press | |
| CN208845473U (en) | A kind of tandem type double piston-rod cylinder | |
| CN201810757U (en) | Piston and cylinder body component of hydraulic cylinder | |
| CN107415314B (en) | Horizontal aluminium extruding machine main plunger weight automatic-balancing system | |
| CN216278759U (en) | Piston rod structure of hydraulic oil cylinder | |
| CN112253665A (en) | Two-stage vibration isolation buffer | |
| CN107052209B (en) | Open type crank press balancing device | |
| CN205244018U (en) | Two effects are from pneumatic cylinder of locking -type | |
| CN217458647U (en) | Spring seat with adjusting structure for lifting machine | |
| CN221097290U (en) | Air spring cover plate with lining | |
| CN220118422U (en) | Wear-resistant piston rod assembly for built-in sensor oil cylinder | |
| CN212407422U (en) | Automobile shock absorber lifting ring |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |