CN201661542U - Hydraulic oil cylinder - Google Patents
Hydraulic oil cylinder Download PDFInfo
- Publication number
- CN201661542U CN201661542U CN2009202788856U CN200920278885U CN201661542U CN 201661542 U CN201661542 U CN 201661542U CN 2009202788856 U CN2009202788856 U CN 2009202788856U CN 200920278885 U CN200920278885 U CN 200920278885U CN 201661542 U CN201661542 U CN 201661542U
- Authority
- CN
- China
- Prior art keywords
- piston
- cylinder body
- copper layer
- hydraulic oil
- oil cylinder
- 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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Abstract
The utility model relates to a hydraulic oil cylinder, which comprises a cylinder body, a piston arranged in the cylinder body and a piston rod connected with the piston. A copper layer covers the circumferential surface of the piston. Since the copper layer which covers the circumferential surface of the piston is used for substituting for a guide sleeve in the original hydraulic oil cylinder, the utility model has the advantages that the number of original connecting pieces is reduced and the uncontrollable factors are avoided; and the effect of friction between the copper layer and the cast iron cylinder body is better than the effect of friction between the cast iron piston and the cast iron cylinder body.
Description
Technical field
The utility model relates to a kind of hydraulic jack, comprises cylinder body, is located at the piston in the cylinder body, the piston rod that is connected with piston.
Background technique
Hydraulic jack is the energy conversion device that hydraulic pressure can be converted to the mechanical energy of linear reciprocating motion, and it is the vitals of hydraulic press.Traditional hydraulic jack mainly comprises cylinder body, is located at the piston in the cylinder body, the piston rod that is connected with piston, and be located at guide pin bushing between piston and the cylinder body.Guide pin bushing need use locking cap and also tight cap locking, and link is many, and uncontrollable factor is many, is prone to problem.
The model utility content
The technical problems to be solved in the utility model provides a kind of good seal performance, the hydraulic jack of reliable operation.
For solving the problems of the technologies described above, the technical solution of the utility model is: a kind of hydraulic jack, comprise cylinder body, and be located at the piston in the cylinder body, the piston rod that is connected with piston, its innovative point is: the circumferential surface of described piston is coated with the copper layer.
Advantage of the present utility model is: replace guide pin bushing in the normal hydraulic oil cylinder by the copper layer that covers at the piston circumferential surface, reduced original link, avoided uncontrollable factor.Simultaneously, friction is good than the friction effect between cast-iron piston and the cast iron housing between the cylinder body of copper layer and cast iron quality.
Description of drawings
Accompanying drawing is the structural representation of the utility model hydraulic jack.
Embodiment
As shown in drawings, the utility model relates to a kind of hydraulic jack, and it comprises cylinder body 1, piston 2, piston rod 3, copper layer 4.
Be provided with piston 2 in the above-mentioned cylinder body 1, this piston 2 is connected with the piston rod 3 that stretches out cylinder body 1, is coated with layer of copper layer 4 by built-up welding on the circumferential surface of described piston 2.
Claims (1)
1. a hydraulic jack comprises cylinder body, is located at the piston in the cylinder body, and the piston rod that is connected with piston is characterized in that: the circumferential surface of described piston is coated with the copper layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202788856U CN201661542U (en) | 2009-11-12 | 2009-11-12 | Hydraulic oil cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202788856U CN201661542U (en) | 2009-11-12 | 2009-11-12 | Hydraulic oil cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201661542U true CN201661542U (en) | 2010-12-01 |
Family
ID=43231958
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202788856U Expired - Fee Related CN201661542U (en) | 2009-11-12 | 2009-11-12 | Hydraulic oil cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201661542U (en) |
-
2009
- 2009-11-12 CN CN2009202788856U patent/CN201661542U/en not_active Expired - Fee Related
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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: 20101201 Termination date: 20131112 |