CN201991870U - Tensioning oil cylinder - Google Patents
Tensioning oil cylinder Download PDFInfo
- Publication number
- CN201991870U CN201991870U CN2011200927207U CN201120092720U CN201991870U CN 201991870 U CN201991870 U CN 201991870U CN 2011200927207 U CN2011200927207 U CN 2011200927207U CN 201120092720 U CN201120092720 U CN 201120092720U CN 201991870 U CN201991870 U CN 201991870U
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- China
- Prior art keywords
- cylinder
- piston rod
- oil
- tensioning hydro
- cylinder body
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- Expired - Fee Related
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Abstract
The utility model discloses a tensioning oil cylinder, which comprises a cylinder bottom (1), a cylinder body (6), a sealing ring, an oil cylinder guide sleeve and a piston rod (5), wherein an oil inlet hole (12) is formed on the cylinder bottom (1); and the piston rod (5) is provided with an oil through hole (13) through which an oil cylinder piston cavity is communicated with a piston rod cavity. High-pressure oil enters a piston cavity of the cylinder body from a cylinder bottom oil port to push the piston rod to work. Meanwhile, the high-pressure oil enters the piston rod cavity from a liquid through hole of the piston rod for carrying out rust resistance and lubrication on the cylinder body inner wall of the piston rod cavity. The tensioning oil cylinder with a crawler type mechanism has the advantages of long service life, simple and compact structure, and convenience and quickness in mounting and maintaining.
Description
Technical field
The utility model relates to a kind of oil cylinder, particularly relates to a kind of tensioning hydro-cylinder.
Background technique
At present, the tensioning hydro-cylinder of each manufacturer's use mainly contains two kinds of forms: a kind of is that rod end chamber communicates with atmosphere by oil cylinder piston chamber feed liquor.The tensioning hydro-cylinder of this form uses more, and its maximum shortcoming is that the inboard wall of cylinder block of rod end chamber will get rusty, corrode, and causes tensioning hydro-cylinder shorter working life because oil cylinder piston bar chamber communicates with atmosphere.The tensioning hydro-cylinder of another kind of form is all feed liquors of piston cavity and rod end chamber, the liquid entering hole of rod end chamber is at the logical liquid joint of cylinder body (near the position of cylinder body oral area) outer wall welding, the oil cylinder occupation space is bigger like this, causes difficulty and inconvenience for the tensioning hydro-cylinder installation and maintenance.
The model utility content
Technical problem to be solved in the utility model provides a kind of long service life, and simple in structure, compact, installation and maintenance is tensioning hydro-cylinder easily and efficiently.
In order to solve the problems of the technologies described above, the tensioning hydro-cylinder that the utility model provides, comprise cylinder bottom, cylinder body, seal ring, oil cylinder guide sleeve and piston rod, cylinder bottom is provided with oil inlet hole, and described piston rod is provided with the oil through that the oil cylinder piston chamber is communicated with rod end chamber.
Described seal ring with described piston rod chromium plating face position contacting on described cylinder body is a flower bud shape seal ring.
Oil cylinder guide sleeve and described cylinder body combine together.
Adopt the tensioning hydro-cylinder of technique scheme, according to the hydraulic jack differential principle, oil through is set, like this on piston rod, the pressure oil that the oil inlet hole that is provided with from cylinder bottom flows to enters oil cylinder piston bar chamber through oil inlet hole and oil through, rod end chamber is carried out antirust and lubricated.Owing to have only cylinder bottom to be provided with an oil inlet hole, the cylinder body profile is actual take up room little, compact structure.Both prolonged the working life of tensioning hydro-cylinder significantly, fully satisfied again such as the specific (special) requirements of crawler type walking mechanism to the tensioning hydro-cylinder installing space.
The beneficial effects of the utility model are: tensioning hydro-cylinder also is lubricated with antirust self inboard wall of cylinder block when tension force is provided.Function by oil cylinder guide sleeve in guide ring, seal ring and the dust ring realization prior art combines traditional oil cylinder guide sleeve and cylinder body together, and is simple in structure, compact, saved installing space; Have long service life, simple in structure, compact, installation and maintenance is characteristics easily and efficiently.
Description of drawings
Fig. 1 is the sectional drawing of the plan view of tensioning hydro-cylinder.
Fig. 2 is the plan view of tensioning hydro-cylinder.
Among the figure:
1. cylinder bottom, 2. back-up ring, 3.O shape seal ring, 4. piston guide ring, 5. piston rod, 6. cylinder body, 7. guide ring, 8. flower bud shape seal ring, 9. dust ring, 10. screw, 11. spring washers, 12. oil inlet holes, 13. oil throughs.
Embodiment
Below in conjunction with drawings and Examples, the utility model is further specified, but and never in any form the content that the present invention protected is limited.
Referring to Fig. 1, cylinder bottom 1, piston rod 5, cylinder body 6 are formed the basic boom of tensioning hydro-cylinder, rely on back-up ring 2 and O-ring seals 3 sealings between cylinder bottom 1 and the cylinder body 6, on cylinder body 6, be provided with guide ring 7, flower bud shape seal ring 8 and dust ring 9 with piston rod 5 chromium plating face position contacting, piston rod 5 is provided with piston guide ring 4, cylinder bottom 1 is provided with, and piston rod 5 is provided with the oil through 13 that the oil cylinder piston chamber is communicated with rod end chamber.
In Fig. 1, cylinder bottom 1, piston rod 5, cylinder body 6 are formed the basic boom of tensioning hydro-cylinder, rely on back-up ring 2 and O-ring seals 3 sealings between cylinder bottom 1 and the cylinder body 6, rely on 8 sealings of flower bud shape seal ring between piston rod 5 and the cylinder body 6.Dust ring 9 is to prevent that dust, foreign material from entering in the cylinder body.Piston guide ring 4 is to prevent that piston rod 5 from directly contacting mutually with cylinder body 6 with guide ring 7, protection cylinder body 6 inwalls and piston rod 5 chromium plating faces.
In Fig. 2,, connect into each part of tensioning hydro-cylinder as a whole by screw 10 and spring washer 11.
High pressure oil enters the tensioning hydro-cylinder piston cavity through the oil inlet hole 12 of cylinder body 1, the oil through 13 on the piston rod 5, it is protruding to promote piston rod 5, and the rod end chamber inboard wall of cylinder block is lubricated maintenance, and prevent corrosion, improved the working life of crawler type walking mechanism tensioning hydro-cylinder greatly.And machined part has only cylinder bottom, piston rod and cylinder body, and is simple in structure, compact.
Certainly, provided by the invention for those skilled in the art, under the prerequisite that does not break away from the utility model principle, can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (7)
1. a tensioning hydro-cylinder comprises cylinder bottom (1), cylinder body (6), piston rod (5), and cylinder bottom (1) is provided with oil inlet hole (12), it is characterized in that: described piston rod (5) is provided with the oil through (13) that the oil cylinder piston chamber is communicated with rod end chamber.
2. tensioning hydro-cylinder according to claim 1 is characterized in that: go up with described piston rod (5) chromium plating face position contacting at described cylinder body (6) and be provided with guide ring (7) and first seal ring (8).
3. tensioning hydro-cylinder according to claim 2 is characterized in that: described seal ring (8) is a flower bud shape seal ring.
4. tensioning hydro-cylinder according to claim 2 is characterized in that: go up with described piston rod (5) chromium plating face position contacting at described cylinder body (6) and also be provided with dust ring (9).
5. tensioning hydro-cylinder according to claim 1 is characterized in that: be provided with second seal ring (3) between described cylinder bottom (1) and described cylinder body (6).
6. tensioning hydro-cylinder according to claim 5 is characterized in that: described second seal ring (3) is an O-ring seals.
7. tensioning hydro-cylinder according to claim 1 is characterized in that: described piston rod (5) is provided with piston guide ring (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200927207U CN201991870U (en) | 2011-03-31 | 2011-03-31 | Tensioning oil cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200927207U CN201991870U (en) | 2011-03-31 | 2011-03-31 | Tensioning oil cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201991870U true CN201991870U (en) | 2011-09-28 |
Family
ID=44668359
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200927207U Expired - Fee Related CN201991870U (en) | 2011-03-31 | 2011-03-31 | Tensioning oil cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201991870U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104564895A (en) * | 2013-10-24 | 2015-04-29 | 比亚迪股份有限公司 | Single-acting plunger cylinder and forklift |
| CN105422547A (en) * | 2015-12-24 | 2016-03-23 | 宁海佰成机械有限公司 | Piston-free oil cylinder |
| CN106837921A (en) * | 2017-03-29 | 2017-06-13 | 江苏恒立液压股份有限公司 | Pressurizing cylinder |
| CN109891104A (en) * | 2016-09-01 | 2019-06-14 | 均胜安全系统收购有限责任公司 | Emission type linear actuators |
-
2011
- 2011-03-31 CN CN2011200927207U patent/CN201991870U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104564895A (en) * | 2013-10-24 | 2015-04-29 | 比亚迪股份有限公司 | Single-acting plunger cylinder and forklift |
| CN104564895B (en) * | 2013-10-24 | 2017-02-15 | 比亚迪股份有限公司 | Single-acting plunger cylinder and forklift |
| CN105422547A (en) * | 2015-12-24 | 2016-03-23 | 宁海佰成机械有限公司 | Piston-free oil cylinder |
| CN109891104A (en) * | 2016-09-01 | 2019-06-14 | 均胜安全系统收购有限责任公司 | Emission type linear actuators |
| CN109891104B (en) * | 2016-09-01 | 2020-10-16 | 均胜安全系统收购有限责任公司 | Vented linear actuator |
| CN106837921A (en) * | 2017-03-29 | 2017-06-13 | 江苏恒立液压股份有限公司 | Pressurizing cylinder |
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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: 20110928 Termination date: 20160331 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |