CN103423234A - Engineering cylinder floating buffer structure with rodless cavity - Google Patents
Engineering cylinder floating buffer structure with rodless cavity Download PDFInfo
- Publication number
- CN103423234A CN103423234A CN2012101513161A CN201210151316A CN103423234A CN 103423234 A CN103423234 A CN 103423234A CN 2012101513161 A CN2012101513161 A CN 2012101513161A CN 201210151316 A CN201210151316 A CN 201210151316A CN 103423234 A CN103423234 A CN 103423234A
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- buffer
- rodless cavity
- buffing pad
- end cap
- cushion collar
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Abstract
The invention discloses an engineering cylinder floating buffer structure with a rodless cavity, and belongs to the field of hydraulic cylinders. The engineering cylinder floating buffer structure comprises a cylinder component, an end cover, a piston rod and a piston. A buffer hole is formed in the center of the end cover. The end of the piston rod on the piston side is fixedly connected with a T-shaped buffer seat arranged in the rodless cavity of the cylinder component, a buffer sleeve is sleeved on the buffer seat, and a radial floating clearance is formed between the buffer sleeve and the buffer seat. The buffer sleeve matches with a small clearance of a buffer hole of the end cover. One end of the buffer sleeve facing to the piston rod is provided with at least two radial one-way oil grooves. A buffer oil channel is arranged in the end cover, one end of the buffer oil channel is communicated with the rodless cavity of the cylinder component, and the other end of the buffer oil channel is communicated with an oil channel in the middle of the end cover; a throttle valve is arranged on the buffer oil channel, and is fixed on the end cover. By the aid of the structure, a cylinder has good buffer effect, the buffering can be adjusted, and the purpose of rapid starting can be achieved.
Description
Technical field
The invention belongs to the hydraulic jack field, particularly for the buffer structure of the engineering oil cylinder rodless cavity of welding mechanism.
Background technique
Existing cylinder barrel and rear end cover adopt the engineering oil cylinder of welding manner, and its rodless cavity buffering adopts gap buffer usually, has guaranteed the reliability of weld seam; It can't realize that buffering regulates, and simultaneously due to reasons such as machining accuracy and supported clearances, it easily causes the buffering styletable mutually to interfere with rear end cover cushion hole disalignment, for overcoming this phenomenon, often by adding buffer gap reduction cushioning effect, solves.
Summary of the invention
The invention provides a kind of engineering oil cylinder rodless cavity floating buffer structure, purpose is to overcome existing welded oil cylinder, the rodless cavity gap buffer pattern that it adopts, the problem that cushioning effect is undesirable.
The present invention includes cylinder assembly, end cap, piston rod, piston, described end cap center is provided with cushion hole, be fixedly connected with a "T"-shaped buffing pad in the end of described piston rod piston side, described buffing pad is arranged in the rodless cavity of described cylinder assembly, be nested with a cushion collar on described buffing pad, described cushion collar can be gone forward at described buffing pad, rear slip, be provided with the radial floating gap between described cushion collar and described buffing pad, described cushion collar and the little Spielpassung of end cap cushion hole, described cushion collar is provided with at least two unidirectional oil grooves radially towards an end of piston rod, the described buffing pad be combined together, cushion collar is mutually corresponding with the cushion hole at described end cap center, the buffering oil duct is set in described end cap, a port of described buffering oil duct is communicated with the rodless cavity of described cylinder assembly, the other end of described buffering oil duct is communicated with the oil duct at described end cap middle part, be provided with throttle valve on described buffering oil duct, described throttle valve is fixed on described end cap.
The present invention is fixedly connected with buffing pad, cushion collar in the piston rod piston side end of rodless cavity, what play a major role is unsteady cushion collar, cushion collar is assemblied on buffing pad and leaves suitable gap, it is used for realizing the slippage of cushion collar, the end towards piston rod of cushion collar is provided with unidirectional oil groove, radial clearance between cushion collar and buffing pad, realize that cushion collar floats and coordinates with the end cap cushion hole; When the piston retraction, the cushion collar floating self-centering enters cushion hole, now rodless cavity is due to cushion collar and cushion hole generation throttling, pressure raises, produce pressure reduction between rodless cavity and end cap hydraulic fluid port, promote cushion collar and slide on buffing pad, make the cushion collar end face contact and form sealing with buffing pad, back cavity hydraulic oil can only be from the gap between cushion collar and cushion hole with through the throttle valve oil return; When the oil-feed of rear end cover hydraulic fluid port, form pressure reduction between hydraulic fluid port and rodless cavity, promoting the cushion collar slippage makes the cushion collar end face contact with the piston rod end face, because the cushion collar end face is provided with unidirectional groove, hydraulic oil can enter rodless cavity from the gap between cushion collar and buffing pad through unidirectional groove, realizes the quick startup of piston; Can realize adjustable buffering by throttle valve.
The present invention arranges installation screw on the top of described piston rod, and described buffing pad is threaded in described installation screw; Thread connecting mode is convenient to dismounting, the replacing of buffing pad, cushion collar.
The accompanying drawing explanation
Fig. 1 is a kind of structural representation of the present invention;
A kind of structural representation that Fig. 2 is cushion collar;
The A-A that Fig. 3 is Fig. 2 is to view.
In figure, 1, cylinder assembly, 2, end cap, 3, piston rod, 4, piston, 5, cushion hole, 6, buffing pad, 7, cushion collar, 9, unidirectional oil groove, 10, the buffering oil duct, 11, throttle valve, 12, installation screw, 13, gap.
Embodiment
As Fig. 1, 2, shown in 3, this engineering oil cylinder rodless cavity floating buffer structure, comprise cylinder assembly 1, end cap 2, piston rod 3, piston 4, described end cap 2 centers are provided with cushion hole 5, be fixedly connected with a "T"-shaped buffing pad 6 in the end of piston rod 3 piston side, buffing pad 6 is arranged in the rodless cavity of cylinder assembly 1, be nested with a cushion collar 7 on buffing pad 6, cushion collar 7 can be gone forward at buffing pad 6, rear slip, be provided with the radial floating gap between cushion collar 7 and buffing pad 6, cushion collar 7 and the little Spielpassung of end cap cushion hole 2, cushion collar 7 is provided with at least two unidirectional oil grooves 9 radially towards an end of piston rod, the buffing pad 6 be combined together, cushion collar 7 is mutually corresponding with the cushion hole 5 at end cap 2 centers, at the interior buffering oil duct 10 that arranges of end cap 2, a port of buffering oil duct 10 is communicated with the rodless cavity of cylinder assembly 1, the other end of buffering oil duct 10 is communicated with the oil duct at end cap middle part, be provided with throttle valve 11 on buffering oil duct 10, throttle valve 11 is fixed on end cap 2.On the top of piston rod 3, installation screw 12 is set, buffing pad 6 is threaded in installation screw 12.
Claims (2)
1. an engineering oil cylinder rodless cavity floating buffer structure, comprise cylinder assembly, end cap, piston rod, piston, described end cap center is provided with cushion hole, it is characterized in that being fixedly connected with in the end of described piston rod piston side a "T"-shaped buffing pad, described buffing pad is arranged in the rodless cavity of described cylinder assembly, be nested with a cushion collar on described buffing pad, described cushion collar can be gone forward at described buffing pad, rear slip, be provided with the radial floating gap between described cushion collar and described buffing pad, described cushion collar and the little Spielpassung of end cap cushion hole, described cushion collar is provided with at least two unidirectional oil grooves radially towards an end of piston rod, the described buffing pad be combined together, cushion collar is mutually corresponding with the cushion hole at described end cap center, the buffering oil duct is set in described end cap, a port of described buffering oil duct is communicated with the rodless cavity of described cylinder assembly, the other end of described buffering oil duct is communicated with the oil duct at described end cap middle part, be provided with throttle valve on described buffering oil duct, described throttle valve is fixed on described end cap.
2. a kind of engineering oil cylinder rodless cavity floating buffer structure according to claim 1, is characterized in that, on the top of described piston rod, installation screw is set, and described buffing pad is threaded in described installation screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101513161A CN103423234A (en) | 2012-05-16 | 2012-05-16 | Engineering cylinder floating buffer structure with rodless cavity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101513161A CN103423234A (en) | 2012-05-16 | 2012-05-16 | Engineering cylinder floating buffer structure with rodless cavity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103423234A true CN103423234A (en) | 2013-12-04 |
Family
ID=49648457
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101513161A Pending CN103423234A (en) | 2012-05-16 | 2012-05-16 | Engineering cylinder floating buffer structure with rodless cavity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103423234A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103629189A (en) * | 2013-12-13 | 2014-03-12 | 蚌埠液力机械有限公司 | Double-acting oil cylinder with an adjustable buffering effect |
| CN103629188A (en) * | 2013-12-11 | 2014-03-12 | 四川凌峰航空液压机械有限公司 | Buffer device for actuator drum |
| CN110159615A (en) * | 2019-04-26 | 2019-08-23 | 平高集团有限公司 | The working cylinder of cushion collar and the hydraulic device using the cushion collar |
| CN114278641A (en) * | 2022-01-06 | 2022-04-05 | 宝武杰富意特殊钢有限公司 | Progressive buffering hydraulic oil cylinder |
-
2012
- 2012-05-16 CN CN2012101513161A patent/CN103423234A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103629188A (en) * | 2013-12-11 | 2014-03-12 | 四川凌峰航空液压机械有限公司 | Buffer device for actuator drum |
| CN103629188B (en) * | 2013-12-11 | 2016-07-13 | 四川凌峰航空液压机械有限公司 | Buffer device for actuator drum |
| CN103629189A (en) * | 2013-12-13 | 2014-03-12 | 蚌埠液力机械有限公司 | Double-acting oil cylinder with an adjustable buffering effect |
| CN110159615A (en) * | 2019-04-26 | 2019-08-23 | 平高集团有限公司 | The working cylinder of cushion collar and the hydraulic device using the cushion collar |
| CN114278641A (en) * | 2022-01-06 | 2022-04-05 | 宝武杰富意特殊钢有限公司 | Progressive buffering hydraulic oil cylinder |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20131204 |