CN208024650U - A kind of cylinder with long service life - Google Patents
A kind of cylinder with long service life Download PDFInfo
- Publication number
- CN208024650U CN208024650U CN201721738874.2U CN201721738874U CN208024650U CN 208024650 U CN208024650 U CN 208024650U CN 201721738874 U CN201721738874 U CN 201721738874U CN 208024650 U CN208024650 U CN 208024650U
- Authority
- CN
- China
- Prior art keywords
- layer
- piston rod
- cylinder
- cylinder barrel
- axle sleeve
- 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.)
- Expired - Fee Related
Links
Abstract
The utility model provides a kind of cylinder with long service life, including cylinder barrel（1）, piston rod（2）And axle sleeve（3）, the piston rod（2）Stretch into the cylinder barrel（1）It is interior, the axle sleeve（3）It is set in piston rod（2）On, the piston rod（2）With cylinder barrel（1）Multiple sealing rings are provided between inner wall（4）, which is characterized in that the axle sleeve（3）It plays support and ensures piston rod（2）And cylinder barrel（1）The effect of concentricity, the axle sleeve（3）Including double-layer structure, double-layer structure be with close to cylinder barrel（1）The layer one of inner wall（31）And close to piston rod（2）Layer two（32）, layer one（31）With layer two（32）Between it is detachable to inlay connection.The utility model improves the wear-resisting property of axle sleeve, while being conveniently individually replaced to fray, greatly reduces maintenance cost.
Description
Technical field
The utility model is related to hydraulic cylinder fields, and in particular to arrive a kind of cylinder with long service life.
Background technology
Hydraulic cylinder is that hydraulic energy is changed into mechanical energy, does straight reciprocating motion（Or pendulum motion）Hydraulic pressure execute member
Part.Its simple in structure, reliable operation when realizing reciprocating motion, can remove deceleration device from it, and not have drive gap,
Stable movement, therefore be used widely in the hydraulic system of various machineries, hydraulic cylinder is usually by rear end cap, cylinder barrel, piston
The major parts such as bar, piston component, drive end bearing bracket form；To prevent fluid from being let out to hydraulic cylinder external leakage or from high pressure chest to low pressure chamber
Leakage, sealing device is both provided between cylinder barrel and end cap, piston and piston rod, piston and cylinder barrel, piston rod and drive end bearing bracket,
On the outside of drive end bearing bracket, it is also equipped with dust guard；To hit cylinder cap when preventing piston from quickly returning to stroke terminal, cylinder ends are also
Buffer unit is set；Sometimes setting exhaust apparatus is also needed.In hydraulic cylinder, between piston rod and cylinder barrel, need on the piston rod
It is arranged guide sleeve, support and the effect for ensureing piston rod and cylinder barrel concentricity, existing guide sleeve generally use polytetrafluoroethylene (PTFE)
Material is made, and after usage time is long, guide sleeve and plunger rod contacts surface wears lead to coaxial unstable phenomenon occur, need
It is entirely replaced, waste is larger.
Utility model content
（One）Technical problems to be solved
Problem to be solved in the utility model be existing hydraulic cylinder guide sleeve it is easy to wear and meanwhile abrasion after need entirely into
The problem of row is replaced.
（Two）Technical solution
To solve the technical problem, the utility model provides a kind of cylinder with long service life, including cylinder barrel, piston rod and
Axle sleeve, the piston rod stretch into the cylinder barrel, and the axle sleeve is arranged on the piston rod, between the piston rod and inner wall of cylinder
Multiple sealing rings are provided with, the axle sleeve plays a part of to support and ensure piston rod and cylinder barrel concentricity, the axle sleeve to include two
Layer structure, double-layer structure are and the layer one close to inner wall of cylinder and the layer two close to piston rod.
Further, the layer one is made of one or more in polytetrafluoroethylene (PTFE), polyphenylene sulfide, nylon, graphite.
Further, the layer two is by one or more systems in polyformaldehyde, SMC composite materials, polyimides, polyamide
At.
Further, the layer two is embedded in one inner surface of layer, and the layer one is separable with layer two.
Further, at least one groove is provided on one inner wall of the layer, the groove is arranged along the axial direction of layer two.
It is corresponding, strip corresponding with groove is provided on two outer wall of the layer.
Further, the layer one includes the component and tenon column of two semicircle shapes, and two endfaces of the component are respectively provided with
There are mortise, the tenon column to be arranged between the opposite mortise of two components.
Corresponding, for the layer two in annular shape, the layer one is wrapped in two outside of layer.
（Three）Advantageous effect
Cylinder with long service life provided by the utility model improves previous guide sleeve, by the guide sleeve of single layer
It is designed to double-layer structure, connection is inlayed between double-layer structure, can detach between the two, and use and gather with one layer choosing of plunger rod contacts
The high engineering plastics of the abrasion hardness such as acid imide, another layer can then select the other materials that the lower hardness of price is taken second place, and protect
Card friction surface hardness, while when layer two is worn, layer two is replaced, maintenance cost is greatly saved.
Description of the drawings
Fig. 1 is the schematic diagram of the utility model；
Fig. 2 is the schematic diagram of the utility model bottom bracket axle；
Fig. 3 is the schematic diagram in 1 middle level two of the utility model embodiment；
Fig. 4 is the schematic diagram in 1 middle level one of the utility model embodiment；
Fig. 5 is the schematic diagram of component in the utility model embodiment 2；
Fig. 6 is 2 exploded perspective view of the utility model embodiment.
Specific implementation mode
With reference to the accompanying drawings and examples, specific embodiment of the present utility model is described in further detail.Below
Embodiment is not intended to limit the scope of the present invention for illustrating the utility model.
As shown in Figs. 1-2, the utility model provides a kind of cylinder with long service life, including cylinder barrel 1, piston rod 2 and axle sleeve
3, the piston rod 2 stretches into the cylinder barrel 1, and the axle sleeve 3 is set on piston rod 2, the piston rod 2 and 1 inner wall of cylinder barrel
Between be provided with multiple sealing rings 4, which is characterized in that the axle sleeve 3 plays support and ensures piston rod 2 and 1 concentricity of cylinder barrel
Effect, the axle sleeve 3 include double-layer structure, double-layer structure be with close to 1 inner wall of cylinder barrel layer 1 and close to piston rod 2
Layer 2 32.
Wherein, the layer 1 is made of one or more in polytetrafluoroethylene (PTFE), polyphenylene sulfide, nylon, graphite, described
Layer 2 32 is made of one or more in polyformaldehyde, SMC composite materials, polyimides, polyamide.
Meanwhile the layer 2 32 is embedded in one 31 inner surface of layer, the layer 1 is separable with layer 2 32.
For the connection type of inlaying between layer one and layer two, the utility model gives multiple embodiments：
Embodiment 1：
As shown in Fig. 3 ~ 4, at least one groove 311 is provided on one 31 inner wall of the layer, the groove 311 is along layer two
32 axial direction is arranged, and strip 321 corresponding with groove 311 is provided on 2 32 outer wall of the layer, utilizes strip and groove real
Now close connection between the two, when needing to replace layer two, tapping strip side can be detached from layer two from layer one,
Then new layer two is changed.
Embodiment 2：
As shown in Fig. 5 ~ 6, the layer 1 includes the component 312 and tenon column 313 of two semicircle shapes, the component 312
Two endfaces are both provided with mortise 314, and the tenon column 313 is arranged between the opposite mortise 314 of two components 312, described
For layer 2 32 in annular shape, the layer 1 is wrapped in 2 32 outside of layer, and using anchor ear mode, layer one and layer two are attached,
When needing to replace layer two, by layer one to both sides drawing so that detached between two components.
In conclusion the above embodiment is not the restricted embodiment for being the utility model, the technology of all this fields
The modification or equivalent deformation that personnel are carried out on the basis of the substantive content of the utility model, in the skill of the utility model
Art scope.
Claims (6)
1. a kind of cylinder with long service life, including cylinder barrel（1）, piston rod（2）And axle sleeve（3）, the piston rod（2）It stretches into described
Cylinder barrel（1）It is interior, the axle sleeve（3）It is set in piston rod（2）On, the piston rod（2）With cylinder barrel（1）It is provided between inner wall more
A sealing ring（4）, which is characterized in that the axle sleeve（3）It plays support and ensures piston rod（2）And cylinder barrel（1）The effect of concentricity,
The axle sleeve（3）Including double-layer structure, double-layer structure be with close to cylinder barrel（1）The layer one of inner wall（31）And close to piston rod
（2）Layer two（32）.
2. a kind of cylinder with long service life according to claim 1, it is characterised in that：The layer two（32）It is embedded in layer one
（31）Inner surface, the layer one（31）With layer two（32）It is separable.
3. a kind of cylinder with long service life according to claim 2, it is characterised in that：The layer one（31）It is provided on inner wall
At least one groove（311）, the groove（311）Along layer two（32）Axial setting.
4. a kind of cylinder with long service life according to claim 3, which is characterized in that the layer two（32）Be provided on outer wall with
Groove（311）Corresponding strip（321）.
5. a kind of cylinder with long service life according to claim 2, which is characterized in that the layer one（31）Including two semicircles
The component of shape（312）And tenon column（313）, the component（312）Two endfaces are both provided with mortise（314）, the tenon column
（313）It is arranged in two components（312）Opposite mortise（314）Between.
6. a kind of cylinder with long service life according to claim 5, which is characterized in that the layer two（32）In annular shape, institute
State layer one（31）It is wrapped in layer two（32）Outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721738874.2U CN208024650U (en) | 2017-12-14 | 2017-12-14 | A kind of cylinder with long service life |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721738874.2U CN208024650U (en) | 2017-12-14 | 2017-12-14 | A kind of cylinder with long service life |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208024650U true CN208024650U (en) | 2018-10-30 |
Family
ID=63898288
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721738874.2U Expired - Fee Related CN208024650U (en) | 2017-12-14 | 2017-12-14 | A kind of cylinder with long service life |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208024650U (en) |
-
2017
- 2017-12-14 CN CN201721738874.2U patent/CN208024650U/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: 20181030 Termination date: 20211214 |