CN201080933Y - Double-acting hydraulic cylinder with limit function - Google Patents
Double-acting hydraulic cylinder with limit function Download PDFInfo
- Publication number
- CN201080933Y CN201080933Y CNU2007200278351U CN200720027835U CN201080933Y CN 201080933 Y CN201080933 Y CN 201080933Y CN U2007200278351 U CNU2007200278351 U CN U2007200278351U CN 200720027835 U CN200720027835 U CN 200720027835U CN 201080933 Y CN201080933 Y CN 201080933Y
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- hydraulic
- cylinder body
- oil
- piston
- double
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Abstract
The utility model provides a limiting two-purpose hydraulic oil cylinder, belonging to the technical field of an improvement of an actuating element in a hydraulic system. The structure of the utility model comprises a cylinder body and a piston arranged in the cylinder body. The piston is connected with a piston rod which is inserted out of one end of the cylinder body. Two ends of the cylinder body are respectively provided with an oil pipe communicated with a cavity of the cylinder body. The inner sides of the two oil pipes are respectively provided with an overflow pipe provided with a one-way valve. When the travel of the hydraulic oil cylinder is about to the end, the oil cylinder releases pressure automatically and stop moving, thereby avoiding ultra-high pressure of a hydraulic system and prolonging the service life of the hydraulic element.
Description
(1) technical field
The utility model relates to a kind of improvement technology of hydraulic actuator, in specifically a kind of hydraulic system the hydraulic pressure of liquid can be converted to the double-act-ing hydraulic J-Horner of the band limit function of mechanical energy.
(2) background technique
The double-act-ing hydraulic J-Horner that uses is divided into rod chamber and rodless cavity at present, hydraulic oil promotion oil cylinder piston moves inwards during the rod chamber fuel feeding, hydraulic oil promotion oil cylinder piston outwards moves during the rodless cavity fuel feeding, the to-and-fro motion of oil cylinder piston drives piston rod movement, does some specific actions thereby drive some mechanisms.But, present double-act-ing hydraulic J-Horner, when outwards moving or moving inwards, when the oil cylinder piston stroke stops, because the volume in oil cylinder chamber no longer increases, the pressure of hydraulic system is increased, impel the relief valve in the system to open pressure release, sometimes because other factors such as operator's negligence of operation or environment, hydraulic jack when stopping, stroke can not in time be commutated, cause hydraulic system to be in the superpressure state for a long time, so that shorten or an ancient egg-shaped, holed wind instrument is bad in the hydraulic element life-span, even part when the hydraulic element explosion takes place.
(3) summary of the invention
Technical assignment of the present utility model is at the deficiencies in the prior art, and a kind of double-act-ing hydraulic J-Horner with limit function is provided.
The technological scheme that its technical problem that solves the utility model adopts is:
The double-act-ing hydraulic J-Horner of band limit function, comprise cylinder body and be arranged on the interior piston of cylinder body, piston is connected with the piston rod that penetrates from cylinder body one end, the two ends of cylinder body are arranged with the oil pipe that communicates with inner chamber of cylinder block, its innovative point is to be equipped with spill pipe respectively in the inboard of above-mentioned two oil pipes, is equipped with one-way valve on the spill pipe.
The double-act-ing hydraulic J-Horner of band limit function of the present utility model compared with prior art, the beneficial effect that is produced is: reasonable in design, simple in structure, long service life, hydraulic jack are not fragile.
(4) description of drawings
Accompanying drawing 1 is the schematic diagram of the hydraulic jack of prior art;
Accompanying drawing 2 is the structural representation of prior art hydraulic jack;
Accompanying drawing 3 is a hydraulic jack schematic diagram of the present utility model;
Accompanying drawing 4 is the structural representation of the utility model hydraulic jack.
Among the figure, 1, the 1B oil inlet and outlet, 2, connect iron pipe, 3, one-way valve, 4, cylinder body, 5, piston rod, 6, piston, 7, flow-off.
(5) embodiment
Below in conjunction with explaining below the double-act-ing hydraulic J-Horner work of accompanying drawing 1-4 to band limit function of the present utility model.
Shown in accompanying drawing 1-4, the double-act-ing hydraulic J-Horner of band limit function of the present utility model, its structure comprises cylinder body 4 and is arranged on the interior piston 6 of cylinder body, piston 6 is connected with the piston rod 5 that a end from cylinder body 4 penetrates, the two ends of cylinder body 4 are arranged with oil inlet and outlet 1, the 1B that communicates with inner chamber of cylinder block, its innovative point is to be equipped with flow-off 7 respectively in the inboard of above-mentioned two oil pipes, its diameter is according to deciding with the flow of the supporting hydraulic-pressure pump of hydraulic jack, the inboard of aperture will be handled totally, slyness can not be jagged.The distance of flow-off 7 and filler opening 1, flow-off 7 and oil outlet 1B is the length that the thickness of oil cylinder piston 5 adds 1CM, be equipped with one-way valve 3 on the spill pipe 7, the attention one-way valve is not adorned instead, and another mouth of one-way valve 3 is connected with 1B with oil inlet pipe 1 by connecting iron pipe 2 again.
Hydraulic oil is from filler opening 1 fuel feeding, and hydraulic jack is done and stretched out movement travel when being about to stop, and the pressure-bearing surface of oil cylinder piston 6 just in time reaches overflow hole 7, and hydraulic oil is pushed one-way valve 3 pressure releases open by overflow hole 7, and the pressure of hydraulic system reduces, and hydraulic jack no longer moves.Hydraulic jack is to swivel motion the time, hydraulic oil is by filler opening 1B fuel feeding, because one-way valve 3 is arranged, hydraulic oil can not be communicated with oil-feed 1 by overflow hole 7, thereby so avoid hydraulic oil to be communicated with oil return by overflow hole, hydraulic oil promotes cylinder piston motion, and when the pressure-bearing surface of oil cylinder piston reached flow-off 7, hydraulic oil was pushed one-way valve 3 pressure releases open by overflow hole 7.Thereby reach spacing purpose.
Its processing and fabricating of the double-act-ing hydraulic J-Horner of band limit function of the present utility model is simple and convenient, and processing and fabricating gets final product shown in the by specification accompanying drawing.
Except that the described technical characteristics of specification, be the known technology of those skilled in the art.
Claims (1)
1. be with the double-act-ing hydraulic J-Horner of limit function, comprise cylinder body and be arranged on the interior piston of cylinder body, piston is connected with the piston rod that penetrates from cylinder body one end, the two ends of cylinder body are arranged with the oil pipe that communicates with inner chamber of cylinder block, it is characterized in that, inboard at above-mentioned two oil pipes is equipped with spill pipe respectively, is equipped with one-way valve on the spill pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200278351U CN201080933Y (en) | 2007-09-17 | 2007-09-17 | Double-acting hydraulic cylinder with limit function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200278351U CN201080933Y (en) | 2007-09-17 | 2007-09-17 | Double-acting hydraulic cylinder with limit function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201080933Y true CN201080933Y (en) | 2008-07-02 |
Family
ID=39614607
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200278351U Expired - Fee Related CN201080933Y (en) | 2007-09-17 | 2007-09-17 | Double-acting hydraulic cylinder with limit function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201080933Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101956737A (en) * | 2010-10-25 | 2011-01-26 | 苏州高新区禾云设备设计事务所 | Pneumatic-boosting hydraulic cylinder |
| CN104005926A (en) * | 2013-02-27 | 2014-08-27 | 卡特彼勒公司 | Hydraulic relief and switching logic for cryogenic pump system |
| CN104314919A (en) * | 2014-09-01 | 2015-01-28 | 富阳通力机械制造有限公司 | Limit valve capable of controlling jack stroke |
-
2007
- 2007-09-17 CN CNU2007200278351U patent/CN201080933Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101956737A (en) * | 2010-10-25 | 2011-01-26 | 苏州高新区禾云设备设计事务所 | Pneumatic-boosting hydraulic cylinder |
| CN104005926A (en) * | 2013-02-27 | 2014-08-27 | 卡特彼勒公司 | Hydraulic relief and switching logic for cryogenic pump system |
| CN104314919A (en) * | 2014-09-01 | 2015-01-28 | 富阳通力机械制造有限公司 | Limit valve capable of controlling jack stroke |
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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: 20080702 Termination date: 20091019 |