CN203926221U - Cushion cylinder - Google Patents
Cushion cylinder Download PDFInfo
- Publication number
- CN203926221U CN203926221U CN201420358801.0U CN201420358801U CN203926221U CN 203926221 U CN203926221 U CN 203926221U CN 201420358801 U CN201420358801 U CN 201420358801U CN 203926221 U CN203926221 U CN 203926221U
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- Prior art keywords
- cushion collar
- piston
- cylinder
- cushion
- cylinder body
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Abstract
The utility model relates to a kind of cushion cylinder, comprise cylinder body, the two ends of cylinder body are sealed by guide sleeve and cylinder bottom head, piston is divided into rod chamber and rodless cavity by the inner chamber of cylinder body, it is characterized in that cylinder bottom head is provided with the first buffer cavity, limited ring is fixedly installed in the first buffer cavity, the first cushion collar and limited ring axial sliding fit, the first cushion collar is provided with central through bore, spring is against between cylinder bottom head and the first cushion collar, the inner of the first cushion collar is stretched in rodless cavity, and the inner central through bore of the first cushion collar is taper hole, the rodless cavity end frustum of piston; The rod chamber end of piston is provided with the second cushion collar, and the inner of guide sleeve is provided with the second buffer cavity, and the inwall of the outer wall of the second cushion collar and the second buffer cavity is Spielpassung.The utility model arranges respectively buffer structure at the two ends of cylinder block, and simple and compact for structure, cost of production is low, reduces piston in the impact of two limit positions of oil cylinder, extends the working life of hydraulic jack, improves the reliability of hydraulic jack.
Description
Technical field
The utility model relates to a kind of hydraulic jack, especially relates to a kind of cushion cylinder.
Background technique
Hydraulic jack is widely used in engineering mechanical device; in the course of the work; the elemental motion of hydraulic jack is that piston and piston rod are with respect to the to-and-fro motion of cylinder body; when piston rod stretches out or retracts, piston can produce very large impact to the end cap at cylinder body two ends, long-term constantly reciprocating impact; can cause the damage of hydraulic jack; shorten the working life of hydraulic jack, increase the user cost of engineering machinery, increase the time of shutdown maintenance.At present, for the buffering form of hydraulic jack, have various ways, conventionally adopt the mode of throttling, but general structure is more complicated, cost of production is higher.
Model utility content
The applicant, for above-mentioned problem, is studied improvement, and a kind of cushion cylinder is provided, and simple and compact for structure, cost of production is low, reduces to impact, and extends the working life of hydraulic jack, improves reliability.
In order to solve the problems of the technologies described above, the utility model adopts following technological scheme:
A kind of cushion cylinder, comprise cylinder body, the two ends of described cylinder body are sealed by guide sleeve and cylinder bottom head, piston is slidably arranged in described cylinder body, the inner of piston rod is fixedly connected with described piston, the outer end of piston rod is protruding through the guide hole of described guide sleeve, described piston is divided into rod chamber and rodless cavity by the inner chamber of described cylinder body, the inner of described cylinder bottom head is provided with the first buffer cavity, limited ring is fixedly installed in described the first buffer cavity, the first cushion collar and described limited ring axial sliding fit, the outer wall of described the first cushion collar is provided with axial throttling groove, described the first cushion collar is provided with central through bore, spring is against between described cylinder bottom head and described the first cushion collar, under free state, under described spring action, the inner of described the first cushion collar is stretched in described rodless cavity, the inner central through bore of described the first cushion collar is taper hole, the rodless cavity end of described piston is provided with the frustum mating with described taper hole, the rod chamber end of described piston is provided with the second cushion collar, and the inner of described guide sleeve is provided with the second buffer cavity, and the inwall of the outer wall of described the second cushion collar and described the second buffer cavity is Spielpassung.
Further:
The outer wall of described the second cushion collar is provided with axial throttling groove.
Technique effect of the present utility model is:
The disclosed a kind of cushion cylinder of the utility model, arranges respectively buffer structure at the two ends of cylinder block, simple and compact for structure, cost of production is low, reduce piston in the impact of two limit positions of oil cylinder, extend the working life of hydraulic jack, improve the reliability of hydraulic jack.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in further detail.
As shown in Figure 1, the utility model comprises cylinder body 2, the two ends of cylinder body 2 are by guide sleeve 5 and cylinder bottom head 1 sealing, piston 3 is slidably arranged in cylinder body 2, the inner of piston rod 4 is fixedly connected with piston 3, the outer end of piston rod 4 is protruding through the guide hole of guide sleeve 5, piston 3 is divided into rod chamber 16 and rodless cavity 15 by the inner chamber of cylinder body 2, the inner of cylinder bottom head 1 is provided with the first buffer cavity 18, limited ring 13 is fixedly installed in the first buffer cavity 18 by back-up ring 12, the first cushion collar 11 and limited ring 13 axial sliding fits, the cup-shaped structure of the first cushion collar 11, the outer wall of the first cushion collar 11 is provided with axial throttling groove 19, between throttling groove 19 on the outer wall of the first cushion collar 11 and the inwall of limited ring 13, form throttling oil duct, the first cushion collar 11 is provided with central through bore 17, spring 14 is against between cylinder bottom head 1 and the first cushion collar 11, under free state, under spring 14 effects, the inner of the first cushion collar 11 is stretched in rodless cavity 15, when the first cushion collar 11 is under pressure, the first cushion collar 11 is to the interior slip of the first buffer cavity 18, the inner central through bore of the first cushion collar 11 is taper hole 10, the rodless cavity end of piston 3 is provided with the frustum 9 mating with taper hole 10.The rod chamber end of piston 3 is provided with the second cushion collar 8, the inner of guide sleeve 5 is provided with the second buffer cavity 6, the inwall of the outer wall of the second cushion collar 8 and the second buffer cavity 6 is Spielpassung, in the present embodiment, is also provided with axial throttling groove 7 on the outer wall of the second cushion collar 8.
In the working procedure of hydraulic jack, when piston rod 4 retraction, piston 3 moves to cylinder bottom head 1 direction, and the first buffer cavity 18 oil inlet and outlet from cylinder bottom head 1 that central through bore 17 and the throttling groove 19 of the hydraulic oil in rodless cavity 15 by the first cushion collar 11 enters cylinder bottom head 1 reflux; When piston 3 is when approaching limit position, the frustum 9 of the rodless cavity end of piston 3 progresses into the taper hole 10 of first cushion collar 11 the inners, and the runner mouth of central through bore 17 is progressively diminished, and it is large that the backflow resistance of hydraulic oil becomes, and starts to bring into play buffer function; When the frustum 9 of the rodless cavity end of piston 3 enters the taper hole 10 of first cushion collar 11 the inners completely, the runner of central through bore 17 is blocked completely, now, hydraulic oil in rodless cavity 15 refluxes by the throttling groove 19 being positioned on the first cushion collar 11 outer walls, thereby generation throttling action, the oil return flow of hydraulic oil is reduced, increased the backflow resistance of hydraulic oil, hydraulic fluid pressure in rodless cavity 15 is increased, make piston-retraction Speed Reduction, produce buffer function, spring 14 also can play certain buffer function simultaneously.When piston rod stretches out, piston 3 moves to guide sleeve 5 directions, and the hydraulic oil in rod chamber 16 flows through the second buffer cavity 6 and refluxes (oil inlet and outlet on guide sleeve 5 and cylinder body 2 is communicated with) by the oil inlet and outlet on guide sleeve 5 and cylinder body 2; When piston 3 is when approaching limit position, the second cushion collar 8 of the rod chamber end of piston 3 gradually near and enter the second buffer cavity 6, hydraulic oil can only be by the gap between the outer wall of the second cushion collar 8 and the inwall of the second buffer cavity 6 or by the throttling groove 7 on the outer wall of the second cushion collar 8, produce throttling action, the oil return flow of hydraulic oil is reduced, increased the backflow resistance of hydraulic oil, the hydraulic fluid pressure of rod chamber 16 is increased, make piston-retraction Speed Reduction, produce buffer function.When piston rod stretches out or retracts to limit position thus, piston reduces in the impact of two limit positions of oil cylinder, thereby extends the working life of hydraulic jack.
Claims (2)
1. a cushion cylinder, comprise cylinder body, the two ends of described cylinder body are sealed by guide sleeve and cylinder bottom head, piston is slidably arranged in described cylinder body, the inner of piston rod is fixedly connected with described piston, the outer end of piston rod is protruding through the guide hole of described guide sleeve, described piston is divided into rod chamber and rodless cavity by the inner chamber of described cylinder body, it is characterized in that: the inner of described cylinder bottom head is provided with the first buffer cavity, limited ring is fixedly installed in described the first buffer cavity, the first cushion collar and described limited ring axial sliding fit, the outer wall of described the first cushion collar is provided with axial throttling groove, described the first cushion collar is provided with central through bore, spring is against between described cylinder bottom head and described the first cushion collar, under free state, under described spring action, the inner of described the first cushion collar is stretched in described rodless cavity, the inner central through bore of described the first cushion collar is taper hole, the rodless cavity end of described piston is provided with the frustum mating with described taper hole, the rod chamber end of described piston is provided with the second cushion collar, and the inner of described guide sleeve is provided with the second buffer cavity, and the inwall of the outer wall of described the second cushion collar and described the second buffer cavity is Spielpassung.
2. according to cushion cylinder claimed in claim 1, it is characterized in that: the outer wall of described the second cushion collar is provided with axial throttling groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420358801.0U CN203926221U (en) | 2014-07-01 | 2014-07-01 | Cushion cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420358801.0U CN203926221U (en) | 2014-07-01 | 2014-07-01 | Cushion cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203926221U true CN203926221U (en) | 2014-11-05 |
Family
ID=51822037
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420358801.0U Expired - Fee Related CN203926221U (en) | 2014-07-01 | 2014-07-01 | Cushion cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203926221U (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104533875A (en) * | 2014-12-26 | 2015-04-22 | 随州市双翼隆基机械科技有限公司 | Electric hydraulic oil cylinder |
| CN104747536A (en) * | 2015-03-05 | 2015-07-01 | 乌本纳数控设备(上海)有限公司 | Non-positioning type hydraulic throttling buffering mechanism |
| CN105114389A (en) * | 2015-07-27 | 2015-12-02 | 柳州柳工液压件有限公司 | Hydraulic oil cylinder |
| CN105804968A (en) * | 2014-12-29 | 2016-07-27 | 深圳富泰宏精密工业有限公司 | Traction type vacuum pump |
| CN107084169A (en) * | 2017-06-22 | 2017-08-22 | 南通爱慕希机械股份有限公司 | A kind of ram cylinder |
| CN107720479A (en) * | 2017-09-26 | 2018-02-23 | 河北东方富达机械有限公司 | A kind of buffer of elevator |
| CN107906074A (en) * | 2017-12-15 | 2018-04-13 | 浙江比洛德传动技术有限公司 | A kind of novel steam auto engine oil cylinder |
| CN110388352A (en) * | 2019-08-06 | 2019-10-29 | 扬州大山液压气动制造有限公司 | Multistage hydraulic cylinder |
| CN110486526A (en) * | 2019-09-23 | 2019-11-22 | 湖南力威液压设备股份有限公司 | A kind of energy-saving free side-turning type flap valve buffer |
| US10738802B2 (en) | 2016-06-16 | 2020-08-11 | Qingdao Acme Innovation Technology Co., Ltd. | Hydraulic buffer and cylinder combined with the same |
| US10962221B2 (en) | 2018-11-13 | 2021-03-30 | Pro-Iroda Industries, Inc. | Flame gun with flow control ring |
| CN114370441A (en) * | 2021-12-30 | 2022-04-19 | 中船重工中南装备有限责任公司 | Two-stage telescopic oil cylinder with buffering function |
-
2014
- 2014-07-01 CN CN201420358801.0U patent/CN203926221U/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104533875A (en) * | 2014-12-26 | 2015-04-22 | 随州市双翼隆基机械科技有限公司 | Electric hydraulic oil cylinder |
| CN105804968A (en) * | 2014-12-29 | 2016-07-27 | 深圳富泰宏精密工业有限公司 | Traction type vacuum pump |
| CN104747536A (en) * | 2015-03-05 | 2015-07-01 | 乌本纳数控设备(上海)有限公司 | Non-positioning type hydraulic throttling buffering mechanism |
| CN105114389A (en) * | 2015-07-27 | 2015-12-02 | 柳州柳工液压件有限公司 | Hydraulic oil cylinder |
| US10738802B2 (en) | 2016-06-16 | 2020-08-11 | Qingdao Acme Innovation Technology Co., Ltd. | Hydraulic buffer and cylinder combined with the same |
| CN107084169A (en) * | 2017-06-22 | 2017-08-22 | 南通爱慕希机械股份有限公司 | A kind of ram cylinder |
| CN107720479A (en) * | 2017-09-26 | 2018-02-23 | 河北东方富达机械有限公司 | A kind of buffer of elevator |
| CN107906074A (en) * | 2017-12-15 | 2018-04-13 | 浙江比洛德传动技术有限公司 | A kind of novel steam auto engine oil cylinder |
| US10962221B2 (en) | 2018-11-13 | 2021-03-30 | Pro-Iroda Industries, Inc. | Flame gun with flow control ring |
| CN110388352A (en) * | 2019-08-06 | 2019-10-29 | 扬州大山液压气动制造有限公司 | Multistage hydraulic cylinder |
| CN110486526A (en) * | 2019-09-23 | 2019-11-22 | 湖南力威液压设备股份有限公司 | A kind of energy-saving free side-turning type flap valve buffer |
| CN110486526B (en) * | 2019-09-23 | 2024-03-08 | 湖南力威液压设备股份有限公司 | Energy-saving free side-turning flap valve buffer |
| CN114370441A (en) * | 2021-12-30 | 2022-04-19 | 中船重工中南装备有限责任公司 | Two-stage telescopic oil cylinder with buffering function |
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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: 20141105 Termination date: 20200701 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |