CN202451501U - Novel hydraulic cylinder - Google Patents
Novel hydraulic cylinder Download PDFInfo
- Publication number
- CN202451501U CN202451501U CN2012200784180U CN201220078418U CN202451501U CN 202451501 U CN202451501 U CN 202451501U CN 2012200784180 U CN2012200784180 U CN 2012200784180U CN 201220078418 U CN201220078418 U CN 201220078418U CN 202451501 U CN202451501 U CN 202451501U
- Authority
- CN
- China
- Prior art keywords
- piston rod
- piston
- oil cylinder
- novel hydraulic
- sealing cover
- 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 a novel hydraulic cylinder, comprising a cylinder body, a seal cover, a piston and a piston rod, wherein a first seal ring is mounted between the inner surface of the seal cover contacting the piston rod; a first wearing ring is mounted at the part of the piston rod contacting the seal cover; the piston is connected to the piston rod through a first bearing and a second bearing mounted in the inner cavity of the piston; a second seal ring is mounted on the piston rod between the first bearing and the second bearing; and the piston rod is rotational in relation to the piston rod. The hydraulic cylinder with such a structure is capable of effectively preventing abrasion of the seal element of the piston and the cylinder body, and thereby prolonging the service life of the cylinder, reducing faults and decreasing equipment cost.
Description
Technical field
The utility model relates to a kind of hydraulic jack, specially refers to the hydraulic jack of jumboes such as being used for sinter forging, industrial and mineral.
Background technique
In heavy duty equipments such as sinter forging, industrial and mineral; Hydraulic jack is widely used; Be to be fixedly connected between the piston of hydraulic jack of the prior art and the piston rod, do the time spent when piston rod receives external force, piston not only can move forward and backward along the oil cylinder body; And possibly rotate, thereby the Sealing of piston and the wearing and tearing of oil cylinder inner body wall have been increased the weight of along the periphery of oil cylinder body.
Summary of the invention
The goal of the invention of the utility model is to provide a kind of improved novel hydraulic oil cylinder; The piston of oil cylinder and piston rod can relatively rotate, and can prevent the wearing and tearing of the Sealing and the oil cylinder body of piston effectively, have prolonged the working life of oil cylinder; Reduce the generation of fault, reduced equipment cost.
In order to realize the goal of the invention of the utility model; Taked following technological scheme: a kind of novel hydraulic oil cylinder, comprise oil cylinder body, sealing cover, piston and piston rod, said sealing cover and the contacted internal surface of said piston rod are equipped with first seal ring; First wear ring is equipped with at said piston rod and the contacted position of said sealing cover; The clutch shaft bearing and second bearing that said piston is installed through its inner chamber link to each other with said piston rod, between the said clutch shaft bearing and second bearing; Second seal ring is installed on said piston rod, and said piston rod can rotate with respect to piston and oil cylinder body.
As improvement, said piston rod has screw thread near an end of piston, and links to each other with a nut.
As improvement, in the radial direction of said piston rod, said nut and piston rod reinforce the connection through screw.
As improvement, said sealing cover and the contacted part of said piston rod, and a side relative with said cylinder cavity are provided with guide pin bushing, and said piston rod can move forward and backward along said guide pin bushing.
As improvement, said guide pin bushing extends along said sealing cover radial direction, and is fixedly connected with said sealing cover.
As improvement, said piston circumference and the contacted part of said oil cylinder body are equipped with the 3rd seal ring.
As preferably, said the 3rd seal ring is two, places the front-end and back-end of said piston respectively.
As improvement, at the intermediate portion of said two the 3rd seal rings, the circumferential part of piston is equipped with second wear ring.
As preferably, said second wear ring is two, is uniformly distributed between two the 3rd seal rings.
The beneficial effect of the utility model is; Be connected through bearing between piston and the piston rod; Piston rod can rotate with respect to piston and oil cylinder body, thereby can prevent the wearing and tearing of the Sealing and the oil cylinder body of piston effectively, has prolonged the working life of oil cylinder; Reduce the generation of fault, reduced equipment cost; Adopt the oil cylinder of this structure, the oil cylinder body need not fixed, and has saved fixing device.In addition, the position that contacts with piston rod at sealing cover is equipped with guide pin bushing, has reduced the wearing and tearing of sealing cover and piston rod effectively, has prolonged the working life of sealing cover.
Description of drawings
Fig. 1 is the sectional view of the utility model hydraulic jack.
Embodiment
Below in conjunction with accompanying drawing the utility model is described further.
Oil cylinder body 1, nut 2, piston 3, piston rod 4, sealing cover 5, guide pin bushing 6, rod chamber 7, screw 8, clutch shaft bearing 9, the 3rd seal ring 10, second wear ring 11, second seal ring 12, second bearing 13, first seal ring 14, the 4th seal ring 15, first wear ring 16, hexagon socket head cap screw 17.
A kind of novel hydraulic oil cylinder; Comprise oil cylinder body 1, sealing cover 5, piston 3 and piston rod 4, piston 3 is divided into rod chamber 7 and rodless cavity with the inner chamber of oil cylinder body 1, and said sealing cover 5 is equipped with first seal ring 14 with said piston rod 4 contacted internal surfaces; Said piston rod 4 is equipped with first wear ring 16 with said sealing cover 5 contacted positions; The clutch shaft bearing 9 and second bearing 13 that said piston 3 is installed through its inner chamber link to each other with said piston rod 4, between the said clutch shaft bearing 9 and second bearing 13; Second seal ring 12 is installed on said piston rod 4; For the enhanced leaktightness performance, two second seal rings can be installed, said piston rod 4 can rotate with respect to piston 3 and oil cylinder body 1.After piston rod 4 receives the external force effect, just can not relatively rotate between piston and the oil cylinder body, thereby reduce wearing and tearing each other.Adopt the hydraulic jack of this structure, oil cylinder body 1 need not fixed, and oil cylinder body 1 rotates with respect to piston rod, thereby has avoided the rotation of piston with respect to oil cylinder itself.
At the end of said piston rod 4, just, be provided with screw thread, and link to each other with a nut 2 near the rodless cavity of oil cylinder body 1 near piston 3.In order to reinforce being connected of piston rod 4 and nut 2, in the radial direction of piston rod 4, said nut 2 reinforces the connection through screw 8 with piston rod 4.Screw can use stopping screw.
Said sealing cover 5 and said piston rod 4 contacted parts; An and side relative with the inner chamber of said oil cylinder; Be provided with guide pin bushing 6, guide pin bushing extends along said sealing cover 5 radial direction, is fixedly connected with sealing cover 5 through hexagon socket head cap screw 17; Said piston rod 4 can move forward and backward along said guide pin bushing 6, and this structure can reduce the wearing and tearing of piston rod 4 and sealing cover 5 effectively.At sealing cover 5 and the contacted peripheral portion of oil cylinder body, near the position of rod chamber 7 two the 4th seal rings 15 are housed, sealing cover 5 is connected through screw with the oil cylinder body.
Two the 3rd seal rings 10 are equipped with at the circumference of piston 3 and oil cylinder body 1 contacted position; Place the front-end and back-end of said piston 3 respectively; Intermediate portion at said two the 3rd seal rings 10; The circumferential part of piston is equipped with two second wear rings 11, is uniformly distributed between two the 3rd seal rings 10.
Explanation is at last; Above embodiment is only unrestricted in order to the technological scheme of explanation the utility model; Other modifications that those of ordinary skills make the technological scheme of the utility model perhaps are equal to replacement; Only otherwise break away from the spirit and the scope of the utility model technological scheme, all should be encompassed in the middle of the claim scope of the utility model.
Claims (9)
1. novel hydraulic oil cylinder; Comprise oil cylinder body, sealing cover, piston and piston rod, said sealing cover and the contacted internal surface of said piston rod are equipped with first seal ring, and first wear ring is equipped with at said piston rod and the contacted position of said sealing cover; It is characterized in that; The clutch shaft bearing and second bearing that said piston is installed through its inner chamber link to each other with said piston rod, between the said clutch shaft bearing and second bearing; Second seal ring is installed on said piston rod, and said piston rod can rotate with respect to piston and oil cylinder body.
2. novel hydraulic oil cylinder according to claim 1 is characterized in that, said piston rod has screw thread near an end of piston, and links to each other with a nut.
3. novel hydraulic oil cylinder according to claim 2 is characterized in that, in the radial direction of said piston rod, said nut and piston rod reinforce the connection through screw.
4. novel hydraulic oil cylinder according to claim 3 is characterized in that, said sealing cover and the contacted part of said piston rod, and a side relative with said cylinder cavity are provided with guide pin bushing, and said piston rod can move forward and backward along said guide pin bushing.
5. novel hydraulic oil cylinder according to claim 4 is characterized in that, said guide pin bushing extends along said sealing cover radial direction, and is fixedly connected with said sealing cover.
6. novel hydraulic oil cylinder according to claim 5 is characterized in that, said piston circumference and the contacted part of said oil cylinder body are equipped with the 3rd seal ring.
7. novel hydraulic oil cylinder according to claim 6 is characterized in that, said the 3rd seal ring is two, places the front-end and back-end of said piston respectively.
8. novel hydraulic oil cylinder according to claim 7 is characterized in that, at the intermediate portion of said two the 3rd seal rings, the circumferential part of piston is equipped with second wear ring.
9. novel hydraulic oil cylinder according to claim 8 is characterized in that, said second wear ring is two, is uniformly distributed between two the 3rd seal rings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200784180U CN202451501U (en) | 2012-03-05 | 2012-03-05 | Novel hydraulic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200784180U CN202451501U (en) | 2012-03-05 | 2012-03-05 | Novel hydraulic cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202451501U true CN202451501U (en) | 2012-09-26 |
Family
ID=46867367
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200784180U Expired - Fee Related CN202451501U (en) | 2012-03-05 | 2012-03-05 | Novel hydraulic cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202451501U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107218265A (en) * | 2017-07-10 | 2017-09-29 | 湖北工业大学 | A kind of rotatable double acting hydraulic cylinder |
| CN109848379A (en) * | 2019-02-26 | 2019-06-07 | 中煤科工集团上海有限公司 | A kind of mold oscillation oil cylinder |
| CN115507087A (en) * | 2022-11-03 | 2022-12-23 | 苏州鑫旭合智能科技有限公司 | Hydraulic oil cylinder capable of preventing oil from being adhered |
-
2012
- 2012-03-05 CN CN2012200784180U patent/CN202451501U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107218265A (en) * | 2017-07-10 | 2017-09-29 | 湖北工业大学 | A kind of rotatable double acting hydraulic cylinder |
| CN109848379A (en) * | 2019-02-26 | 2019-06-07 | 中煤科工集团上海有限公司 | A kind of mold oscillation oil cylinder |
| CN109848379B (en) * | 2019-02-26 | 2024-04-30 | 中煤科工集团上海有限公司 | Crystallizer vibrating cylinder |
| CN115507087A (en) * | 2022-11-03 | 2022-12-23 | 苏州鑫旭合智能科技有限公司 | Hydraulic oil cylinder capable of preventing oil from being adhered |
| CN115507087B (en) * | 2022-11-03 | 2023-08-29 | 苏州鑫旭合智能科技有限公司 | Hydraulic cylinder capable of preventing oil from adhering |
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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: 20120926 Termination date: 20140305 |