CN202149201U - Piston-cylinder unit - Google Patents
Piston-cylinder unit Download PDFInfo
- Publication number
- CN202149201U CN202149201U CN201120238135U CN201120238135U CN202149201U CN 202149201 U CN202149201 U CN 202149201U CN 201120238135 U CN201120238135 U CN 201120238135U CN 201120238135 U CN201120238135 U CN 201120238135U CN 202149201 U CN202149201 U CN 202149201U
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- China
- Prior art keywords
- piston
- cylinder
- piston rod
- cylinder unit
- groove
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- 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
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Abstract
The utility model relates to a piston-cylinder unit, comprising a cylinder body and a piston, a piston sealing ring is sheathed on the outer circle of the piston, a first concave groove is arranged on the surface of the outer circle of the piston and the surface of the inner circle of the cylinder body along the peripheral direction, a piston supporting ring is welded in the first concave groove in an overlaying manner, the piston supporting ring and the piston are coaxially arranged, and the piston supporting ring is made of silicon bronze; the piston-cylinder unit is easy to process and assemble, the welding slag and the dust are not easy to get into the cylinder body during the assembling, and the piston and cylinder unit has a good sealing effect after being assembled and has a long sealing period of validity, good abrasive resistance and a stable running state, the cylinder score and the clamping stagnation phenomena are not easy to occur, the deformation caused by abrasion is remarkably reduced, the technical problem that the affect to the service life of a fluid-power pressure actuating mechanism by the environment is serious can be effectively solved, and the piston-cylinder unit is particularly suitable for being used on a liquid pressure actuating mechanism.
Description
Technical field
The utility model relates to a kind of fluid pressure actuator, particularly a kind ofly is suitable for the piston-cylinder unit that liquid pressure actuating mechanism is used.
Background technique
At present, the piston cylinder piston seal of fluid pressure actuator (especially hydraulic press) generally adopts phenolic aldehyde folder cloth supporting ring+Glais ring, and the guide sleeve sealing adopts phenolic aldehyde folder cloth supporting ring+this special envelope+axle with YX shape seal ring+dust ring form.In use because environment is more abominable, and the connecting pipeline of most of type all is to assemble at the scene, is prone to get into cylinder body so produce impurity such as welding slag, dust in the assembly process, and quality of product is lower, and the cylinder body quality is seriously influenced.
On the other hand; Existing technology realizes about the guide ring that the support of piston or piston rod generally adopts phenolic resin to make, because there is inside and outside circle out-of-alignment problem in the guide ring work in-process, causes guide ring and cylinder barrel gap inhomogeneous; Wearing and tearing obviously when gap less (less than 0.06 mm time); Pull-cylinder phenomena is serious, and the cylinder barrel internal surface is prone to produce to be pulled, and impurity gets into cylinder body through gap between piston and cylinder body and the gap between guide sleeve and piston rod easily when matching gap exceeds H9/f9; Cause piston and cylinder body, guide sleeve and piston rod to pull or clamping stagnation bad seals.Owing to alignment error, the equipment frequency of utilization is high simultaneously, and piston cylinder in use unbalance loading is serious, and it is bigger to wear and tear.
The piston-cylinder unit structure of existing technology can not satisfy working life and security needs gradually.
The model utility content
The utility model purpose provides a kind of piston-cylinder unit, is easy to processing and assembling, and welding slag, dust are difficult for getting in cylinder body and piston and piston rod and the guide sleeve fitting surface in the using process; Assembling back good airproof performance, the sealing effective date is long, and wear resistance is good simultaneously; Stable, be difficult for producing scuffing of cylinder bore and catching phenomenon, the distortion that wearing and tearing are caused significantly reduces; Also not fragile in the bad working environments lower component, significantly improve working life.
The utility model is realized through following scheme:
A kind of piston-cylinder unit; Comprise cylinder body, be built in the cylinder body and can be along the piston of self axially reciprocating; The outside piston cover is useful on the piston packing in gap between packed-piston outer wall and the inboard wall of cylinder block, and the cylinder body internal circular surfaces is along being circumferentially with first groove that is used to install the piston supports ring, built-up welding piston supports ring in first groove; Piston supports ring and the coaxial setting of piston; At this moment, the outside piston surface is the supported surface corresponding with piston supports ring working surface, and piston supports ring working surface cooperates with supported surface gap; The piston supports ring is formed by copper or Cuprum alloy built-up welding.
The piston supports ring is that silicon bronze matter structure and built-up welding are in first groove; This support ring and body form an integral body; The gap uniformity of the coaxality of support ring and piston, cylinder barrel all can guarantee through welding back fine finishing; Gap value significantly diminishes (can reach the H9/f9 precision), reduces impurity such as welding slag, dust simultaneously through getting into match with the cylinder body possibility at place, slit of oil cylinder piston, the table prolongation of sealing; On the other hand, copper or Cuprum alloy material are wear-resisting, are difficult for causing the destruction to cylinder barrel, and cylinder body is significantly reduced because of the distortion that wearing and tearing cause, thoroughly solve the influence of external environment to the hydraulic system parts.The described piston of this programme can be the piston of two-sided fed sheet of a media, also can be the plunger of single face fed sheet of a media, and best is the piston of two-sided fed sheet of a media.
Preferably, said first groove is twice at least, and is better to piston supports and guidance quality.
Preferably; Also comprise and coaxial setting of piston and the piston rod that is fixedly connected; Piston rod is with guide sleeve outward; Guide sleeve cylindrical cover is useful on the guide sleeve seal ring in gap between sealing guide sleeve outer wall and the cylinder body casing wall, and piston rod cylindrical cover is useful on the rod seal circle in gap between sealing guide sleeve inwall and the piston rod outer wall;
The guide sleeve internal circular surfaces is along being circumferentially with second groove that is used to install the piston rod support ring; Built-up welding piston rod support ring in second groove; Piston rod support ring and the coaxial setting of piston rod, at this moment, the piston rod outer round surface is the supported surface corresponding with piston rod support ring working surface; Piston rod support ring working surface cooperates with supported surface gap; The piston rod support ring is formed by copper or Cuprum alloy built-up welding.This structure can further avoid impurity such as welding slag, dust through getting into gap location between oil cylinder piston and cylinder body, guide sleeve and the piston rod, and piston rod is supported and leads, and better improves device working life.
Preferably, said second groove is twice at least, and is better to the support and the guidance quality of piston rod.
Preferably, said second groove is divided into the two end part of guide sleeve, further improves support and guide effect to piston rod.
The utility model effect is:
1, impurity such as welding slag, dust reduces through oil cylinder piston and cylinder body, the guide sleeve possibility that gap location gets into cylinder interior that matches with piston rod greatly.
2, cylinder body and piston significantly reduce because of the distortion that wearing and tearing cause, improve 3-5 the normal working life of piston-cylinder unit doubly.
3, sealing table increase 1.5-2 doubly.
The piston-cylinder unit of the utility model mechanism is easy to processing and assembling, can effectively solve the big technical problem of environment fluid pressure actuator influence in working life, is particularly suitable for going up application in liquid pressure actuating mechanism (hydraulic press).
Description of drawings
Fig. 1 is the structural representation of the utility model;
Fig. 2 is the enlarged view of A portion among Fig. 1;
Fig. 3 is the enlarged view of B portion among Fig. 1.
Embodiment
Below in conjunction with accompanying drawing the utility model is described further.
The piston-cylinder unit of present embodiment comprises cylinder body, is built in the cylinder body and can be along the piston 2 of self axially reciprocating, and cylinder body 1 comprises cylinder barrel 11, cylinder bottom 12 and cylinder cap 13; Piston 2 cylindrical covers are useful on the piston packing 3 in gap between packed-piston outer wall and the inner wall of cylinder; The outside piston surface is along being circumferentially with first groove that is used to install the piston supports ring, and in the present embodiment, first groove is twice; Built-up welding piston supports ring 4 in first groove; At this moment, the cylinder body internal circular surfaces is the supported surface corresponding with piston supports ring 4, and the supported surface gap that piston supports ring working surface is corresponding with it cooperates; Piston supports ring and the coaxial setting of piston, the piston supports ring is processed by silicon bronze.
The piston-cylinder unit of present embodiment also comprises and coaxial setting of piston and the piston rod 5 that is fixedly connected; Piston rod 5 cylindricals are with guide sleeve 6; Guide sleeve 6 cylindrical covers are useful on the guide sleeve seal ring 61 in gap between sealing guide sleeve outer wall and the inner wall of cylinder, and piston rod 5 cylindrical covers are useful on the rod seal circle 51 in gap between sealing guide sleeve inwall and the piston rod outer wall; The guide sleeve internal circular surfaces is along being circumferentially with second groove that is used to install the piston rod support ring; In the present embodiment; Second groove is twice and the two end part that are divided into guide sleeve, built-up welding piston rod support ring 7 in second groove, at this moment; The piston rod outer round surface is the supported surface corresponding with piston rod support ring 4, and piston rod support ring working surface cooperates with supported surface gap; Piston rod support ring 7 and the coaxial setting of piston rod, the piston rod support ring is processed by silicon bronze, further improves support and guide effect to piston rod.
Need explanation at last; Above embodiment only is used to explain the technological scheme of the utility model and is unrestricted; Although specify, it will be appreciated by those skilled in the art that and to make amendment or be equal to replacement the technological scheme of the utility model with reference to the technological scheme of preferred embodiment to the utility model; And not breaking away from the aim and the scope of the utility model, it all should be encompassed in the middle of the protection domain of the utility model.
Claims (5)
1. piston-cylinder unit; Comprise cylinder body, be built in the cylinder body and can be along the piston of self axially reciprocating; The outside piston cover is useful on the piston packing in gap between closed piston outer wall and the inboard wall of cylinder block, it is characterized in that: the outside piston surface is along being circumferentially with first groove, built-up welding piston supports ring in first groove; Piston supports ring and the coaxial setting of piston, the supported surface gap that piston supports ring working surface is corresponding with it cooperates; The piston supports ring is processed by copper or Cuprum alloy.
2. piston-cylinder unit according to claim 1 is characterized in that: said first groove is twice at least.
3. piston-cylinder unit according to claim 1 and 2; It is characterized in that: also comprise and coaxial setting of piston and the piston rod that is fixedly connected; The piston rod cylindrical is with guide sleeve; Guide sleeve cylindrical cover is useful on the guide sleeve seal ring in confined bed gap between cover outer wall and inboard wall of cylinder block, and piston rod cylindrical cover is useful on the rod seal circle in confined bed gap between cover inwall and piston rod outer wall;
The guide sleeve internal circular surfaces is along being circumferentially with second groove, built-up welding piston rod support ring in second groove, piston rod support ring and the coaxial setting of piston rod, the supported surface gap cooperation that piston rod support ring working surface is corresponding with it; The piston rod support ring is processed by copper or Cuprum alloy.
4. piston-cylinder unit according to claim 3 is characterized in that: said second groove is twice at least.
5. piston-cylinder unit according to claim 4 is characterized in that: said second groove is divided into the two end part of guide sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120238135U CN202149201U (en) | 2011-07-07 | 2011-07-07 | Piston-cylinder unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120238135U CN202149201U (en) | 2011-07-07 | 2011-07-07 | Piston-cylinder unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202149201U true CN202149201U (en) | 2012-02-22 |
Family
ID=45590260
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120238135U Expired - Fee Related CN202149201U (en) | 2011-07-07 | 2011-07-07 | Piston-cylinder unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202149201U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103206533A (en) * | 2013-01-25 | 2013-07-17 | 祥天控股（集团）有限公司 | Cylinder and piston of swing type variable multi-cylinder aerodynamic engine |
| CN103206532A (en) * | 2013-01-25 | 2013-07-17 | 祥天控股（集团）有限公司 | Air cylinders and pistons of variable multi-cylinder aerodynamic engine |
-
2011
- 2011-07-07 CN CN201120238135U patent/CN202149201U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103206533A (en) * | 2013-01-25 | 2013-07-17 | 祥天控股（集团）有限公司 | Cylinder and piston of swing type variable multi-cylinder aerodynamic engine |
| CN103206532A (en) * | 2013-01-25 | 2013-07-17 | 祥天控股（集团）有限公司 | Air cylinders and pistons of variable multi-cylinder aerodynamic engine |
| CN103206532B (en) * | 2013-01-25 | 2016-02-17 | 祥天控股（集团）有限公司 | The cylinder of variable multi-cylinder aerodynamic engine and piston |
| CN103206533B (en) * | 2013-01-25 | 2016-03-30 | 祥天控股（集团）有限公司 | The cylinder of swing type variable multi-cylinder aerodynamic engine and piston |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120222 Termination date: 20180707 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |