CN201250819Y - Oil cylinder and piston and piston rod connection structure employed by same - Google Patents
Oil cylinder and piston and piston rod connection structure employed by same Download PDFInfo
- Publication number
- CN201250819Y CN201250819Y CNU2008200488161U CN200820048816U CN201250819Y CN 201250819 Y CN201250819 Y CN 201250819Y CN U2008200488161 U CNU2008200488161 U CN U2008200488161U CN 200820048816 U CN200820048816 U CN 200820048816U CN 201250819 Y CN201250819 Y CN 201250819Y
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- CN
- China
- Prior art keywords
- piston
- piston rod
- oil cylinder
- groove
- peripheral surface
- 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
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- Actuator (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The utility model discloses an oil cylinder, which comprises a cylinder body, a piston rod and a piston which is arranged in the cylinder body and connected with the piston rod; wherein, the front end of the piston rod is a stepped shaft; a threaded hole is arranged at the front end of the piston rod; a bolt is screwed in the threaded hole; and both sides of the piston are respectively fixed by the journal of the stepped shaft and the bolt. The utility model has the advantages of more reliable connection and long service life.
Description
Technical field
The utility model relates to a kind of oil cylinder and used piston and the piston rod linkage structure of this oil cylinder.
Background technique
In the prior art, the piston of oil cylinder generally is to adopt FERRULETYPE to be connected with the Placement of piston rod, because there is following defective in the stressed and shape of cutting ferrule own:
1, in the using process, cutting ferrule very easily causes fracture owing to overtired, influences the overall work life-span of oil cylinder;
2, adopt the FERRULETYPE linkage structure, it is unreliable to connect, and cutting ferrule can't satisfy the requirement of big pulling force.
3, adopt FERRULETYPE to connect, its sealability is relatively poor.
Summary of the invention
The purpose of this utility model is to provide that a kind of connection is more reliable, the oil cylinder of longer service life and used piston of this oil and piston rod linkage structure.
The utility model is achieved through the following technical solutions:
A kind of oil cylinder, comprise cylinder body, piston rod and be located in the cylinder body and the piston that is connected with piston rod that the front end of this piston rod is a multidiameter shaft, is provided with tapped hole in the front end end of piston rod, bolt and tapped hole are connected, and the both sides of piston are respectively by the axle journal of multidiameter shaft and bolt.
In the utility model, can be under limited space, make piston and piston rod realize that high strength is connected, connect more reliably, can be used for transmitting bigger pulling force, and be not prone to the phenomenon of straining such as fatigue, the long service life of oil cylinder in the working procedure.
Further improvement of the utility model is:
One of them is provided with seal groove at least for the inner peripheral surface of described piston, the outer peripheral surface of piston rod, is provided with seal ring in the sealing groove, and the sealing circle is sealed and matched with the inner peripheral surface of described piston, the outer peripheral surface of piston rod simultaneously.This structure can guarantee good sealing property between piston and the piston rod.
Be provided with the bar hole on described cylinder body, described piston rod passes this bar hole, and the inner peripheral surface in the bar hole is provided with seal groove, is provided with seal ring in the sealing groove, and the sealing circle cooperates with described cylinder body, rod seal simultaneously.This structure can guarantee the good sealing property between cylinder body and the piston rod.
The periphery of described piston is provided with groove, is provided with seal ring in this groove, and the inner peripheral surface of sealing circle and described cylinder body is sealed and matched.Described piston comprises two piston lateral plates, and these two piston lateral plate excircles are equipped with breach, and two breach on these two piston lateral plates form described groove relatively.During installation, seal ring can be packed into earlier between two piston lateral plates, piston is connected with piston rod again, install more conveniently, seal ring used herein can be " V " shape seal ring.
The front end of this piston rod is a multidiameter shaft, is provided with tapped hole in the front end end of piston rod, and bolt and tapped hole are connected, and the both sides of piston are respectively by the axle journal of multidiameter shaft and bolt.
In the utility model, also be provided with filler opening, oil outlet on the cylinder body of described piston, this is a prior art, does not do too much description.
Description of drawings
Fig. 1 is the structural drawing of oil cylinder described in the utility model;
Description of reference numerals:
1, cylinder body, 2, piston rod, 3, the piston lateral plate, 4, bolt, 5, seal ring, 6, groove, 7, tapped hole.
Embodiment
As shown in Figure 1, a kind of oil cylinder, comprise cylinder body 1, piston rod 2 and be located in the cylinder body 1 and the piston that is connected with piston rod 2, the front end of this piston rod 2 is a multidiameter shaft, front end end at piston rod 2 is provided with tapped hole 7, bolt 4 is connected with tapped hole 7, and the both sides of piston are fixing by the axle journal of multidiameter shaft and bolt 4 respectively.
Wherein, be equipped with seal groove on the outer peripheral surface of the inner peripheral surface of piston, piston rod 2, be provided with " 0 " shape seal ring 5 in the sealing groove, sealing circle 5 is sealed and matched with the inner peripheral surface of piston, the outer peripheral surface of piston rod 2 simultaneously; Be provided with the bar hole on cylinder body 1, piston rod 2 passes this bar hole, and the inner peripheral surface in the bar hole also is provided with seal groove, is provided with seal ring 5 in the sealing groove, and sealing circle 5 is sealed and matched with cylinder body 1, piston rod 2 simultaneously; Also be provided with groove on the periphery of piston, in this groove, be provided with " V " shape seal ring 5, the inner peripheral surface that is somebody's turn to do " V " shape seal ring 5 and cylinder body 1 is sealed and matched, piston comprises two piston lateral plates 3, these two piston lateral plate 3 excircles are equipped with breach, and two breach on these two piston lateral plates 3 form described groove 6 relatively.
In the present embodiment, can under limited space, make piston and piston rod realize that high strength is connected, connect more reliably, can be used for transmitting bigger pulling force, and be not prone to strain phenomenon such as fatigue in the working procedure, the long service life of oil cylinder, the good sealing effect of present embodiment simultaneously.
Claims (6)
1, a kind of oil cylinder, comprise cylinder body, piston rod and be located in the cylinder body and the piston that is connected with piston rod, it is characterized in that, the front end of this piston rod is a multidiameter shaft, front end end at piston rod is provided with tapped hole, bolt and tapped hole are connected, and the both sides of piston are respectively by the axle journal of multidiameter shaft and bolt.
2, oil cylinder according to claim 1, it is characterized in that, one of them is provided with seal groove at least for the inner peripheral surface of described piston, the outer peripheral surface of piston rod, is provided with seal ring in the sealing groove, and the sealing circle is sealed and matched with the inner peripheral surface of described piston, the outer peripheral surface of piston rod simultaneously.
3, oil cylinder according to claim 1 is characterized in that, is provided with the bar hole on described cylinder body, described piston rod passes this bar hole, inner peripheral surface in the bar hole is provided with seal groove, is provided with seal ring in the sealing groove, and the sealing circle cooperates with described cylinder body, rod seal simultaneously.
4, as oil cylinder as described in claim 1 or 2 or 3, it is characterized in that the periphery of described piston is provided with groove, be provided with seal ring in this groove, the inner peripheral surface of sealing circle and described cylinder body is sealed and matched.
5, as oil cylinder as described in the claim 2, it is characterized in that described piston comprises two piston lateral plates, these two piston lateral plate excircles are equipped with breach, and two breach on these two piston lateral plates form described groove relatively.
6, the linkage structure of a kind of piston of oil cylinder and piston rod, it is characterized in that the front end of this piston rod is a multidiameter shaft, be provided with tapped hole in the front end end of piston rod, bolt and tapped hole are connected, and the both sides of piston are respectively by the axle journal of multidiameter shaft and bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200488161U CN201250819Y (en) | 2008-06-05 | 2008-06-05 | Oil cylinder and piston and piston rod connection structure employed by same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200488161U CN201250819Y (en) | 2008-06-05 | 2008-06-05 | Oil cylinder and piston and piston rod connection structure employed by same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201250819Y true CN201250819Y (en) | 2009-06-03 |
Family
ID=40746492
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200488161U Expired - Fee Related CN201250819Y (en) | 2008-06-05 | 2008-06-05 | Oil cylinder and piston and piston rod connection structure employed by same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201250819Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103264852A (en) * | 2013-04-28 | 2013-08-28 | 浙江中科兴环能设备有限公司 | Hydraulic slide frame at bottom of sludge bin |
| CN103291911A (en) * | 2013-06-25 | 2013-09-11 | 郑州大学 | Compression type gas pressing nanometer coining self-adaptive pressing piston structure |
| CN103620234A (en) * | 2011-06-03 | 2014-03-05 | Smc株式会社 | Piston assembly, fluid pressure cylinder, method for manufacturing piston assembly |
| WO2016176715A1 (en) * | 2015-05-06 | 2016-11-10 | Ticbar Pty Ltd | A piston assembly |
-
2008
- 2008-06-05 CN CNU2008200488161U patent/CN201250819Y/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103620234A (en) * | 2011-06-03 | 2014-03-05 | Smc株式会社 | Piston assembly, fluid pressure cylinder, method for manufacturing piston assembly |
| CN103264852A (en) * | 2013-04-28 | 2013-08-28 | 浙江中科兴环能设备有限公司 | Hydraulic slide frame at bottom of sludge bin |
| CN103291911A (en) * | 2013-06-25 | 2013-09-11 | 郑州大学 | Compression type gas pressing nanometer coining self-adaptive pressing piston structure |
| CN103291911B (en) * | 2013-06-25 | 2015-07-01 | 郑州大学 | Compression type gas pressing nanometer coining self-adaptive pressing piston structure |
| WO2016176715A1 (en) * | 2015-05-06 | 2016-11-10 | Ticbar Pty Ltd | A piston assembly |
| CN107531274A (en) * | 2015-05-06 | 2018-01-02 | 蒂卡芭私人有限公司 | Piston component |
| GB2554609A (en) * | 2015-05-06 | 2018-04-04 | Ticbar Pty Ltd | A piston assembly |
| CN107531274B (en) * | 2015-05-06 | 2019-08-06 | 蒂卡芭私人有限公司 | Piston component |
| TWI674987B (en) * | 2015-05-06 | 2019-10-21 | 澳大利亞商堤壩股份有限公司 | A piston assembly |
| GB2554609B (en) * | 2015-05-06 | 2020-10-07 | Ticbar Pty Ltd | A piston assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090603 Termination date: 20130605 |