CN202659619U - Hydraulic cylinder for preventing piston rod from rotating - Google Patents
Hydraulic cylinder for preventing piston rod from rotating Download PDFInfo
- Publication number
- CN202659619U CN202659619U CN 201220149529 CN201220149529U CN202659619U CN 202659619 U CN202659619 U CN 202659619U CN 201220149529 CN201220149529 CN 201220149529 CN 201220149529 U CN201220149529 U CN 201220149529U CN 202659619 U CN202659619 U CN 202659619U
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- China
- Prior art keywords
- piston rod
- hydraulic cylinder
- rotating
- link
- cylinder body
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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 discloses a hydraulic cylinder for preventing a piston rod from rotating. The hydraulic cylinder comprises a cylinder body and a cylinder head gland which is arranged at one end of the cylinder body, wherein the piston rod is arranged in the cylinder body, one end of the piston rod is movably connected with the inner cavity of the cylinder body, the other end of the piston rod penetrates through the cylinder head gland, a threaded hole is arranged inside the cylinder body, an unthreaded hole is arranged in the piston rod, corresponding to the threaded hole, and a connecting piece is arranged between the threaded hole and the unthreaded hole. The hydraulic cylinder for preventing the piston rod from rotating can prevent the piston rod from rotating when being stretched and contracted due to the arrangement of the connecting piece between the piston rod and the hydraulic cylinder, the anti-rotation effect is obvious, no influence on production exists, the hydraulic cylinder for preventing the piston rod from rotating is simple in structure, convenient to assemble and longer in service life, and the cost is greatly lowered.
Description
Technical field
The utility model relates to the oil hydraulic cylinder field, particularly relates to a kind of capable of preventing piston rod from rotating oil hydraulic cylinder.
Background technique
The hydraulic jack utmost point is widely used in all trades and professions, and people propose the non-rotatable requirement of piston rod to hydraulic jack in some cases, and its typical case is to be applied in the vulcanizer equipment.Yet in the prior art, the anti-reverse most complex structure of mechanism in the hydraulic jack, working life is short, inconvenience is installed, and anti-reverse effect is undesirable, and cost is higher.
The model utility content
The technical problem that the utility model mainly solves provides a kind of capable of preventing piston rod from rotating oil hydraulic cylinder of satisfactory for result, long service life simple in structure, easy to assembly, anti-reverse.
For solving the problems of the technologies described above, the technological scheme that the utility model adopts is: a kind of capable of preventing piston rod from rotating oil hydraulic cylinder is provided, comprise cylinder body and be arranged on the cylinder head gland of cylinder body one end, be provided with piston rod in the described cylinder body, described piston rod one end and inner chamber of cylinder block are flexibly connected, and the other end runs through the cylinder head gland, and described cylinder interior offers tapped hole, corresponding tapped hole place offers unthreaded hole on the described piston rod, is provided with link between described tapped hole and the unthreaded hole.
In preferred embodiment of the utility model, described tapped hole is arranged on cylinder body middle part one side.
In preferred embodiment of the utility model, described link is straight pin, and described straight pin one end is threaded with tapped hole, the other end and unthreaded hole Spielpassung.
In preferred embodiment of the utility model, the diameter of described unthreaded hole is than the large 2-4mm of diameter of the link in the unthreaded hole.
In preferred embodiment of the utility model, be provided with the gap between described unthreaded hole bottom and the link end, described gap length is greater than the stroke of piston rod.
In preferred embodiment of the utility model, be coated with sealer on the link in the described tapped hole.
The beneficial effects of the utility model are: the utility model capable of preventing piston rod from rotating oil hydraulic cylinder is owing to be provided with link between piston rod and oil hydraulic cylinder, can prevent from rotating when piston rod is flexible, the anti-rotation effect is remarkable, can not exert an influence to processing, this capable of preventing piston rod from rotating hydraulic cylinder structure is simple, easy to assembly, working life is longer, greatly reduces cost.
Description of drawings
Fig. 1 is the perspective view of the utility model capable of preventing piston rod from rotating oil hydraulic cylinder one preferred embodiment;
The mark of each parts is as follows in the accompanying drawing: 1, link, 2, cylinder body, 3, piston rod, 4, the cylinder head gland, 5, inner chamber of cylinder block, 6, unthreaded hole.
Embodiment
Below in conjunction with accompanying drawing preferred embodiment of the present utility model is described in detail, thereby so that advantage of the present utility model and feature can be easier to be it will be appreciated by those skilled in the art that protection domain of the present utility model is made more explicit defining.
See also Fig. 1, the utility model is embodiment comprise:
A kind of capable of preventing piston rod from rotating oil hydraulic cylinder, comprise cylinder body 2 and be arranged on the cylinder head gland 4 of cylinder body 2 one ends, be provided with piston rod 3 in the described cylinder body 2, described piston rod 3 one ends and inner chamber of cylinder block 5 are flexibly connected, the other end runs through cylinder head gland 4, described cylinder body 2 inside offer tapped hole, and corresponding tapped hole place offers unthreaded hole 6 on the described piston rod 3, are provided with link 1 between described tapped hole and the unthreaded hole 6.
Wherein, described tapped hole is arranged on cylinder body 2 middle parts one side, and the corresponding setting with tapped hole of described unthreaded hole 6 is connected by link 1 between unthreaded hole 6 and the tapped hole.Described link 1 is straight pin, and described straight pin one end is threaded with tapped hole, the other end and unthreaded hole 6 Spielpassung, thus can prevent from rotating when piston rod 3 from stretching.
The diameter of described unthreaded hole 6 is than the large 2-4mm of diameter of the link 1 in the unthreaded hole 6, and the utility model is preferably 2mm, thereby so that piston rod 3 can not rub with link 1 when flexible, has improved the working life of link 1.
Be provided with the gap between described unthreaded hole 6 bottoms and link 1 end, described gap length is greater than the stroke of piston rod 3, thereby so that piston rod 3 can not clash into link 1 when flexible, prevents link 1 fracture.
Be coated with sealer on the link 1 in the described tapped hole, can prevent that link 1 is loosening.
During use, link 1 correspondence is packed in tapped hole and the unthreaded hole 6, when piston rod 3 stretches out or during indentation, link 1 is in the unthreaded hole 6 of piston rod 3 all the time, thereby prevents that piston rod 3 from rotating.
Compared with prior art, the utility model capable of preventing piston rod from rotating oil hydraulic cylinder is owing to be provided with link 1 between piston rod 3 and oil hydraulic cylinder, can prevent from rotating when piston rod 3 from stretching, the anti-rotation effect is remarkable, can not exert an influence to processing, this capable of preventing piston rod from rotating hydraulic cylinder structure is simple, easy to assembly, working life is longer, greatly reduces cost.
The above only is embodiment of the present utility model; be not so limit claim of the present utility model; every equivalent structure or equivalent flow process conversion that utilizes the utility model specification and accompanying drawing content to do; or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present utility model.
Claims (6)
1. capable of preventing piston rod from rotating oil hydraulic cylinder, comprise cylinder body (2) and be arranged on the cylinder head gland (4) of cylinder body (2) one ends, be provided with piston rod (3) in the described cylinder body (2), described piston rod (3) one ends and inner chamber of cylinder block (5) are flexibly connected, the other end runs through cylinder head gland (4), it is characterized in that: described cylinder body (2) inside offers tapped hole, the upper corresponding tapped hole place of described piston rod (3) offers unthreaded hole (6), is provided with link (1) between described tapped hole and the unthreaded hole (6).
2. capable of preventing piston rod from rotating oil hydraulic cylinder according to claim 1 is characterized in that: described tapped hole is arranged on cylinder body (2) middle part one side.
3. capable of preventing piston rod from rotating oil hydraulic cylinder according to claim 1, it is characterized in that: described link (1) is straight pin, and described straight pin one end is threaded with tapped hole, the other end and unthreaded hole (6) Spielpassung.
4. capable of preventing piston rod from rotating oil hydraulic cylinder according to claim 1 is characterized in that: the large 2-4mm of diameter of the link (1) that the diameter of described unthreaded hole (6) is interior than unthreaded hole (6).
5. capable of preventing piston rod from rotating oil hydraulic cylinder according to claim 1 is characterized in that: be provided with the gap between described unthreaded hole (6) bottom and link (1) end, described gap length is greater than the stroke of piston rod (3).
6. capable of preventing piston rod from rotating oil hydraulic cylinder according to claim 1 is characterized in that: be coated with sealer on the link (1) in the described tapped hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220149529 CN202659619U (en) | 2012-04-11 | 2012-04-11 | Hydraulic cylinder for preventing piston rod from rotating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220149529 CN202659619U (en) | 2012-04-11 | 2012-04-11 | Hydraulic cylinder for preventing piston rod from rotating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202659619U true CN202659619U (en) | 2013-01-09 |
Family
ID=47454528
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220149529 Expired - Fee Related CN202659619U (en) | 2012-04-11 | 2012-04-11 | Hydraulic cylinder for preventing piston rod from rotating |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202659619U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103557200A (en) * | 2013-11-22 | 2014-02-05 | 徐州徐工液压件有限公司 | Hydraulic cylinder with rotation resistant mechanism |
-
2012
- 2012-04-11 CN CN 201220149529 patent/CN202659619U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103557200A (en) * | 2013-11-22 | 2014-02-05 | 徐州徐工液压件有限公司 | Hydraulic cylinder with rotation resistant mechanism |
| CN103557200B (en) * | 2013-11-22 | 2016-01-06 | 徐州徐工液压件有限公司 | A kind of oil hydraulic cylinder with anti-rotation mechanism |
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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: 20130109 Termination date: 20130411 |