CN204099331U - A kind of oil cylinder - Google Patents
A kind of oil cylinder Download PDFInfo
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- CN204099331U CN204099331U CN201420438106.5U CN201420438106U CN204099331U CN 204099331 U CN204099331 U CN 204099331U CN 201420438106 U CN201420438106 U CN 201420438106U CN 204099331 U CN204099331 U CN 204099331U
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- piston
- oil cylinder
- cylinder
- annular groove
- ball
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Abstract
The utility model discloses a kind of oil cylinder, comprise cylinder barrel and the piston that is arranged in cylinder barrel and piston rod, one end of piston rod is connected with piston; This oil cylinder also comprises the supporting structure for support piston, supporting structure comprises annular groove and multiple ball, annular groove is offered along the circumference of piston, and multiple ball is arranged in annular groove rotationally, and ball exceeds the peripheral surface of piston and contacts with the internal surface of cylinder barrel.Sliding friction between supporting structure with inner wall of cylinder is become mixing of rolling friction and sliding friction, significantly reduce the frictional force in piston running, avoid the shake abnormal sound that oil cylinder causes because frictional force is large, thus greatly can improve the oil cylinder life-span; In addition, between adjacent ball, there is certain gap, automatically can adjust the point of contact with inner wall of cylinder, avoid the high point of cylinder barrel radial direction, reduce the probability coordinating tension to occur, reduce the requirement on machining accuracy of cylinder tube.
Description
Technical field
The utility model relates to hydraulic element field, particularly a kind of oil cylinder.
Background technique
At present, oil cylinder is as the important component of engineering machinery, and its performance directly affects the competitive ability of main frame.And piston is as the important spare part of oil cylinder, not only need the hydraulic oil of its both sides isolated, also need to-and-fro motion in cylinder barrel; In order to prevent piston run-off the straight during to-and-fro motion in cylinder barrel, piston is typically equipped with supporting structure.The supporting structure of current piston is mainly guide ring, namely uses the Q-RING of phenolic aldehyde folder cloth material or Cuprum alloy material, is placed in the groove of outer surface of piston, support piston to-and-fro motion.This supporting way friction factor is higher, and when high speed is reciprocating, guide ring easily weares and teares, heating, until damage; Simultaneously, being slidably matched of this whole circle lock ring, very strict to the requirement on machining accuracy of inner hole of cylinder, piston channel, guide ring itself, once there is deviation in precision, then coordinate the phenomenon easily occurring tension, cause the exceptions such as oil cylinder is creeped, shake, reduce reliability and the life-span of oil cylinder use.
Model utility content
In view of this, the utility model proposes a kind of oil cylinder, to solve piston when to-and-fro motion, higher, the easy wearing and tearing of its supporting structure friction factor, the problem that requirement on machining accuracy is too high.
The utility model provides a kind of oil cylinder, and comprise cylinder barrel and the piston that is arranged in described cylinder barrel and piston rod, one end of described piston rod is connected with piston; Described oil cylinder also comprises the supporting structure for supporting described piston, described supporting structure comprises annular groove and multiple ball, described annular groove is offered along the circumference of piston, multiple described ball is arranged in annular groove rotationally, described ball exceeds the peripheral surface of piston and contacts with the internal surface of described cylinder barrel, is formed support described piston.
In further technological scheme, the cross section of described annular groove is " U " shape, or square, or inverted trapezoidal.
In further technological scheme, the quantity of described annular groove is two and axially spaced-apart along piston rod is arranged.
In further technological scheme, described oil cylinder also comprises seal ring, described seal ring be arranged on piston periphery and between two described annular grooves.
In further technological scheme, described ball is steel ball or ceramic bead.
In further technological scheme, described oil cylinder also comprises sheathed guide sleeve on the piston rod, and described guide sleeve is provided with described supporting structure.
The oil cylinder that the utility model provides, compared with prior art, its supporting structure to be matched with annular groove by ball and forms, form ball to the support of inner wall of cylinder, instead of the support of the guide ring of original phenolic aldehyde folder cloth material or Cuprum alloy material, ball and inner wall of cylinder are point cantact, and change the fit form between supporting structure with inner wall of cylinder into sliding pair and rolling pair mixing by sliding pair, significantly can reduce the frictional force in piston running like this, reduce heating value, avoid the shake abnormal sound that oil cylinder causes because frictional force is large, thus can greatly improve the oil cylinder life-span, in addition, each ball is wanted freely to rotate, and must there is certain gap, automatically can adjust the point of contact with inner wall of cylinder, avoid the high point of cylinder barrel radial direction between adjacent ball, reduces the probability coordinating tension to occur, reduces the requirement on machining accuracy of cylinder tube, moreover it is low that guide ring price compared by ball, therefore also can reduce costs.
Accompanying drawing explanation
The accompanying drawing forming a part of the present utility model is used to provide further understanding of the present utility model, and schematic description and description of the present utility model, for explaining the utility model, is not formed improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the mounting structure schematic diagram of oil cylinder in the utility model specific embodiment.
Description of reference numerals
1 cylinder barrel
2 steel balls
3 seal rings
4 pistons
5 piston rods
6 guide sleeves
7 annular grooves
Embodiment
It should be noted that, when not conflicting, the embodiment in the utility model and the feature in embodiment can combine mutually.Below with reference to the accompanying drawings and describe the utility model in detail in conjunction with the embodiments.
The utility model specific embodiment one provides a kind of oil cylinder, as shown in Figure 1, this oil cylinder comprises cylinder barrel 1, piston 4, piston rod 5 and supporting structure, and one end of piston rod 5 connects piston 4 and is placed in cylinder barrel 1, and supporting structure comprises annular groove 7 and multiple steel ball 2, annular groove 7 is opened on the periphery of piston 4, steel ball 2 is arranged in annular groove 7 rotationally, and steel ball 2 is higher than the outer surface of piston 4, after assembling, steel ball 2 contacts with cylinder barrel 1 inwall, thus forms the support to piston 4; Be noted that steel ball 2 will realize free rotation, between adjacent steel ball 2, certain gap must be there is, and also will reduce between the inwall of steel ball 2 and annular groove 7 to rub.
Certainly, in order to increase the sealability of piston 4, above-mentioned oil cylinder also comprises seal ring 3, and the periphery of piston 4 has mounting groove, and seal ring 3 and mounting groove engagement sleeves are located at the periphery of piston 4, and supporting structure is arranged on the side of seal ring 3; Preferably, the quantity of supporting structure is two, and lays respectively at the both sides of seal ring 3, and support more reliable like this, piston 4 runs also more steady.In addition, the shape of the cross section of annular pit can be " U " shape, square or inverted trapezoidal, and be rotatably assorted reliably as long as steel ball 2 can be formed with annular groove 7, therefore the cross section of annular groove 7 can also be other shape, no longer enumerates at this; Replace further, useful ceramics pearl gone back by steel ball 2.
The oil cylinder that the utility model proposes, its supporting structure to be matched with annular groove 7 by ball and forms, form ball to the support of cylinder barrel 1 inwall, instead of the support of the guide ring of original phenolic aldehyde folder cloth material or Cuprum alloy material, ball and cylinder barrel 1 inwall are point cantact, and change the fit form between supporting structure with cylinder barrel 1 inwall into sliding pair and rolling pair mixing by sliding pair, significantly can reduce the frictional force in piston 4 running like this, reduce heating value, avoid the shake abnormal sound that oil cylinder causes because frictional force is large, thus can greatly improve the oil cylinder life-span, in addition, each ball is wanted freely to rotate, and must there is certain gap, automatically can adjust the point of contact with cylinder barrel 1 inwall, avoid the high point of cylinder barrel 1 radial direction between adjacent ball, reduces the probability coordinating tension to occur, reduces the requirement on machining accuracy of cylinder tube 1, moreover it is low that guide ring price compared by ball, therefore also can reduce costs.
In addition, the utility model specific embodiment two provides a kind of oil cylinder, this oil cylinder also comprises the guide sleeve 6 be set on piston rod 5, guide sleeve 6 is also provided with above-mentioned supporting structure, therefore also become mixing of rolling friction and sliding friction between guide sleeve 6 with cylinder barrel 1 inwall, reduce the frictional force in piston rod 5 running further, reduce heating value, avoid the shake abnormal sound that oil cylinder causes because frictional force is large, improve the oil cylinder life-span further.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (6)
1. an oil cylinder, the piston (4) comprising cylinder barrel (1) and be arranged in described cylinder barrel (1) and piston rod (5), one end of described piston rod (5) is connected with piston (4), it is characterized in that, also comprise the supporting structure for supporting described piston (4), described supporting structure comprises annular groove (7) and multiple ball, described annular groove (7) is offered along the circumference of piston (4), multiple described ball is arranged in annular groove (7) rotationally, described ball exceeds the peripheral surface of piston (4) and contacts with the internal surface of described cylinder barrel (1), described piston (4) is formed and supports.
2. oil cylinder according to claim 1, is characterized in that, the cross section of described annular groove (7) is " U " shape, or square, or inverted trapezoidal.
3. oil cylinder according to claim 1, is characterized in that, the quantity of described annular groove (7) is two and axially spaced-apart along piston rod (5) is arranged.
4. oil cylinder according to claim 3, is characterized in that, also comprises seal ring (3), and described seal ring (3) is arranged on the periphery of piston (4) and is positioned between two described annular grooves (7).
5. oil cylinder according to claim 1, is characterized in that, described ball is steel ball (2) or ceramic bead.
6. the oil cylinder according to any one of claim 1-5, is characterized in that, also comprise the guide sleeve (6) be set on piston rod (5), described guide sleeve (6) is provided with described supporting structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420438106.5U CN204099331U (en) | 2014-08-05 | 2014-08-05 | A kind of oil cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420438106.5U CN204099331U (en) | 2014-08-05 | 2014-08-05 | A kind of oil cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204099331U true CN204099331U (en) | 2015-01-14 |
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ID=52267763
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420438106.5U Active CN204099331U (en) | 2014-08-05 | 2014-08-05 | A kind of oil cylinder |
Country Status (1)
| Country | Link |
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| CN (1) | CN204099331U (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105136386A (en) * | 2015-09-24 | 2015-12-09 | 昆山市交通工程试验检测中心 | Force value test device |
| CN106050797A (en) * | 2016-08-17 | 2016-10-26 | 四川英发太阳能科技有限公司 | Support structure of solar cells suitable for low-temperature region |
| CN106050821A (en) * | 2016-08-17 | 2016-10-26 | 四川英发太阳能科技有限公司 | Auxiliary device for manufacturing polycrystalline silicon solar cells |
| CN106089847A (en) * | 2016-08-17 | 2016-11-09 | 四川英发太阳能科技有限公司 | For producing the hydraulic system of silica-based solar cell sheet |
| CN106286463A (en) * | 2016-08-17 | 2017-01-04 | 四川英发太阳能科技有限公司 | A kind of defect detection equipment of monocrystaline silicon solar cell sheet |
| CN106400395A (en) * | 2016-11-28 | 2017-02-15 | 珠海格力电器股份有限公司 | Washing machine and damping assembly thereof |
| CN106762966A (en) * | 2017-03-30 | 2017-05-31 | 苏州标杆知识产权运营有限公司 | A kind of oil cylinder piston guiding mechanism |
| CN110195731A (en) * | 2019-06-20 | 2019-09-03 | 淄博鸿润新材料有限公司 | High pressure resistant wear-resistant ceramic plunger |
| CN110848203A (en) * | 2019-11-26 | 2020-02-28 | 衡阳市林肯液压设备有限公司 | Guide sleeve for hydraulic cylinder |
| CN114993491A (en) * | 2022-06-17 | 2022-09-02 | 武汉润达中控自动化工程有限公司 | Temperature transmitter with good safety |
-
2014
- 2014-08-05 CN CN201420438106.5U patent/CN204099331U/en active Active
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105136386A (en) * | 2015-09-24 | 2015-12-09 | 昆山市交通工程试验检测中心 | Force value test device |
| CN106050797A (en) * | 2016-08-17 | 2016-10-26 | 四川英发太阳能科技有限公司 | Support structure of solar cells suitable for low-temperature region |
| CN106050821A (en) * | 2016-08-17 | 2016-10-26 | 四川英发太阳能科技有限公司 | Auxiliary device for manufacturing polycrystalline silicon solar cells |
| CN106089847A (en) * | 2016-08-17 | 2016-11-09 | 四川英发太阳能科技有限公司 | For producing the hydraulic system of silica-based solar cell sheet |
| CN106286463A (en) * | 2016-08-17 | 2017-01-04 | 四川英发太阳能科技有限公司 | A kind of defect detection equipment of monocrystaline silicon solar cell sheet |
| CN106286463B (en) * | 2016-08-17 | 2018-07-27 | 南京英发睿能科技有限公司 | A kind of defect detection equipment of monocrystaline silicon solar cell piece |
| CN106400395A (en) * | 2016-11-28 | 2017-02-15 | 珠海格力电器股份有限公司 | Washing machine and damping assembly thereof |
| CN106762966A (en) * | 2017-03-30 | 2017-05-31 | 苏州标杆知识产权运营有限公司 | A kind of oil cylinder piston guiding mechanism |
| CN110195731A (en) * | 2019-06-20 | 2019-09-03 | 淄博鸿润新材料有限公司 | High pressure resistant wear-resistant ceramic plunger |
| CN110848203A (en) * | 2019-11-26 | 2020-02-28 | 衡阳市林肯液压设备有限公司 | Guide sleeve for hydraulic cylinder |
| CN114993491A (en) * | 2022-06-17 | 2022-09-02 | 武汉润达中控自动化工程有限公司 | Temperature transmitter with good safety |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |