CN102322458A - The variable-speed oil hydraulic cylinder - Google Patents
The variable-speed oil hydraulic cylinder Download PDFInfo
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- CN102322458A CN102322458A CN201110306067A CN201110306067A CN102322458A CN 102322458 A CN102322458 A CN 102322458A CN 201110306067 A CN201110306067 A CN 201110306067A CN 201110306067 A CN201110306067 A CN 201110306067A CN 102322458 A CN102322458 A CN 102322458A
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Abstract
The invention discloses a kind of variable-speed oil hydraulic cylinder, comprise work cylinder barrel and speed regulation cylinder cylinder barrel, work cylinder barrel and speed regulation cylinder cylinder barrel link into an integrated entity through middle cylinder cap; Be provided with back cylinder cover in speed regulation cylinder cylinder barrel end, be provided with front end housing in work cylinder barrel end; In the work cylinder barrel, be provided with slave cylinder piston, in the speed regulation cylinder cylinder barrel, be provided with the speed regulation cylinder piston; The piston rod that is arranged in work cylinder barrel and speed regulation cylinder cylinder barrel passes cylinder cap, and an end of piston rod is connected with the speed regulation cylinder piston, and the other end stretches out outside the front end housing, and slave cylinder piston is arranged on the piston rod; On the work cylinder barrel, be provided with filler opening and return opening; In the speed regulation cylinder cylinder barrel, be full of magnetic rheological liquid, the parallelly connected damp tube of processing by permeability magnetic material that is provided with the speed regulation cylinder cylinder barrel, the two ends of damp tube link to each other with chamber, speed regulation cylinder piston both sides respectively; The inside of damp tube has damping hole, is provided with electromagnetic coil in the damping hole outside.The present invention is easy to adjust, velocity control accuracy is high.
Description
Technical field
The present invention relates to a kind of oil hydraulic cylinder, specifically a kind of oil hydraulic cylinder of adjustment movement speed automatically.
Background technique
Oil hydraulic cylinder is the executive component in the hydraulic system, is used for driving operation mechanism and realizes straight reciprocating motion or reciprocally swinging.In hydraulic system, be widely used.With can to regulate the oil hydraulic motor of output speed different through changing discharge capacity, oil hydraulic cylinder itself does not possess speed-regulating function.The output movement speed of regulator solution cylinder pressure if desired; Must there be corresponding flow control circuit, speed changing-over loop supporting with it; Need use throttle valve, series flow control valve and other supporting hydraulic pressure components and parts, the oil hydraulic circuit of formation is often very huge, and the hydraulic pressure components and parts that relate to are also a lot.According to the variable-speed oil hydraulic cylinder of magnetic converting technique design, can be through the rheological properties of magnetic flow liquid, the movement velocity of regulator solution cylinder pressure, thus simplify oil hydraulic circuit, reduce the hydraulic pressure components and parts, practice thrift cost, reduce and leak link.
Summary of the invention
The purpose of this invention is to provide a kind of oil hydraulic cylinder of governing speed automatically.This variable-speed oil hydraulic cylinder utilizes the rheological properties of magnetic flow liquid, controls the viscosity of magnetic flow liquid through changing magnetic intensity, and then the movement velocity of regulator solution cylinder pressure output.
The objective of the invention is to realize through following technological scheme:
A kind of variable-speed oil hydraulic cylinder is characterized in that: this variable-speed oil hydraulic cylinder comprises work cylinder barrel and speed regulation cylinder cylinder barrel, and work cylinder barrel and speed regulation cylinder cylinder barrel link into an integrated entity through middle cylinder cap; Be provided with back cylinder cover in speed regulation cylinder cylinder barrel end, be provided with front end housing in work cylinder barrel end; In the work cylinder barrel, be provided with slave cylinder piston, in the speed regulation cylinder cylinder barrel, be provided with the speed regulation cylinder piston; The piston rod that is arranged in work cylinder barrel and speed regulation cylinder cylinder barrel passes cylinder cap, and an end of piston rod is connected with the speed regulation cylinder piston, and the other end stretches out outside the front end housing, and slave cylinder piston is arranged on the piston rod; On the work cylinder barrel, be provided with filler opening and return opening; In the speed regulation cylinder cylinder barrel, be full of magnetic rheological liquid, the parallelly connected damp tube of processing by permeability magnetic material that is provided with the speed regulation cylinder cylinder barrel, the two ends of damp tube link to each other with chamber, speed regulation cylinder piston both sides respectively; The inside of damp tube has damping hole, is provided with electromagnetic coil in the damping hole outside.
Among the present invention, filler opening and return opening are arranged on front end housing and the middle cylinder cap.
Among the present invention, can parallelly connectedly be provided with a damp tube with the speed regulation cylinder cylinder barrel, parallel connection simultaneously is provided with many damp tubes.Magnetic rheological liquid is that a kind of the new liquid material of significant change can take place medium viscosity in magnetic field, and it can change semisolid into from free-pouring liquid at moment (Millisecond) under strong magnetic field action, present controlled yield strength.The viscosity of magnetic rheological liquid is continuous, stepless with the process of change of magnetic field strength, and this variation is reversible.
Electromagnetic coil is a skeleton with the speed governing damp tube, and energising will produce magnetic field later, and the size of magnetic flux depends on the size through solenoid current, can change the intensity in magnetic field through the control electric current, thereby changes the viscosity of the damping hole magnetic rheological liquid of flowing through.
The present invention is cascaded two identical oil hydraulic cylinders of specification, and one of them is as clutch release slave cylinder, and another is as speed regulation cylinder, and two-cylinder piston links to each other through a piston rod.Be parallel with one or more speed governing damp tube with speed regulation cylinder, constitute a loop, be full of magnetic rheological liquid in the speed regulation cylinder with speed regulation cylinder.In damp tube, have damping hole, the damping hole outside installs field coil additional.
When the variable-speed hydraulic cylinder works; Through the filler opening and the return opening of clutch release slave cylinder, the cylinder piston that pushes the work forward moves to a certain direction, because slave cylinder piston and speed regulation cylinder piston are for being rigidly connected; The speed regulation cylinder piston is synchronized with the movement thereupon during the slave cylinder piston motion, and the result produces pressure difference in the piston both sides.In the effect of pressure reduction, the magnetic rheological liquid in the speed regulation cylinder will produce through damping hole and flow, and the movement velocity of piston rod will depend on the magnetic rheological liquid flow of the damping hole of flowing through at this moment.After feeding electric current in the electromagnetic coil, rheology takes place in magnetic rheological liquid under magnetic field, make the viscosity of rheological fluid change, thereby makes the magnetic rheological liquid changes in flow rate of the damping hole of flowing through, and finally influences the movement velocity of piston rod.Because under the effect of externally-applied magnetic field, the viscosity of magnetic rheological liquid is continuous, stepless with the process that changes through solenoid current, thereby can realize the stepless speed regulation of piston motion, and adjustment process can realize automatic control.
The present invention utilizes the rheological properties of magnetic flow liquid, and is through changing the viscosity of magnetic intensity control magnetic flow liquid, and then the movement velocity of regulator solution cylinder pressure output, easy to adjust, velocity control accuracy is high.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Embodiment
Specify the present invention below in conjunction with accompanying drawing and embodiment.
As shown in Figure 1; A kind of magnetic flow liquid gas-liquid damping cylinder; Comprise clutch release slave cylinder cylinder barrel 8, speed regulation cylinder cylinder barrel 10, middle cylinder cap 9 links into an integrated entity clutch release slave cylinder cylinder barrel 8 and speed regulation cylinder cylinder barrel 10, and piston rod 6 links into an integrated entity slave cylinder piston 5 and speed regulation cylinder piston 11; The piston rod external part of clutch release slave cylinder cylinder barrel 8 is equipped with front end housing 7, and the tail end of speed regulation cylinder cylinder barrel 10 is equipped with back cylinder cover 13.Parallelly connected with speed regulation cylinder a speed governing damp tube 3 is housed, speed governing damp tube 3 also can be many, sets as required.This variable-speed oil hydraulic cylinder utilizes the rheological properties of magnetic flow liquid, controls the viscosity of magnetic flow liquid through changing magnetic intensity, and then the movement velocity of regulator solution cylinder pressure output.
Have damping hole 2 in speed governing damp tube 3 inside, speed regulation cylinder piston 11 is divided into two cavitys with speed regulation cylinder cylinder barrel 10, and speed governing damp tube 3 two ends link to each other with two cavitys of speed regulation cylinder cylinder barrel 10 respectively.Electromagnetic coil 1 is equipped with in the outside of damping hole 2 in the speed governing damp tube 3, and speed governing damp tube 3 is processed by permeability magnetic material, is full of magnetic rheological liquid 12 in the speed regulation cylinder cylinder barrel 10.
Electromagnetic coil 1 is a skeleton with speed governing damp tube 3; Energising will produce magnetic field later; The size of magnetic flux depends on through the size of current on the electromagnetic coil 1, can change the intensity in magnetic field through the control electric current, thereby changes the viscosity of the damping hole magnetic rheological liquid 12 of flowing through.
When the variable-speed hydraulic cylinder works, through the filler opening and the return opening 4 of configuration in front end housing 7 and the middle cylinder cap 9, the cylinder piston 5 that pushes the work forward moves to a certain direction; Because slave cylinder piston 5 and speed regulation cylinder piston 11 are for being rigidly connected, speed regulation cylinder piston 11 moves thereupon synchronously in the same way during slave cylinder piston 5 motions, and at this moment the magnetic rheological liquid 12 in the speed regulation cylinder cylinder barrel 10 will produce through the damping hole in the speed governing damp tube 32 and flow; Thereby the motion of speed regulation cylinder piston 11 receives the damping function of magnetic rheological liquid 12; At this moment slave cylinder piston 5 depends on the flow of magnetic rheological liquid 12 through damping hole 2 in the speed governing damp tube 3 with the movement velocity of speed regulation cylinder piston 11, and flow is bigger, and speed is higher; And the viscosity of flow and magnetic rheological liquid 12 is inversely proportional to; Viscosity is bigger, and flow is littler, and then slave cylinder piston 5 is lower with the movement velocity of speed regulation cylinder piston 11.When change put on the electric current on the electromagnetic coil 1, the viscosity of magnetic rheological liquid 12 changed thereupon, thereby the slave cylinder piston 5 and the movement velocity of speed regulation cylinder piston 11 are changed.Because under the effect of externally-applied magnetic field, the process that the viscosity of magnetic rheological liquid 12 changes with electromagnetic coil 1 electric current is continuous, stepless, thereby can realize the stepless speed regulation of slave cylinder piston 5 motions, and adjustment process can realize automatic control.
Claims (3)
1. variable-speed oil hydraulic cylinder, it is characterized in that: this variable-speed oil hydraulic cylinder comprises work cylinder barrel (8) and speed regulation cylinder cylinder barrel (10), work cylinder barrel (8) links into an integrated entity through middle cylinder cap (9) with speed regulation cylinder cylinder barrel (10); Be provided with back cylinder cover (13) in speed regulation cylinder cylinder barrel (10) end, be provided with front end housing (7) in work cylinder barrel (8) end; In work cylinder barrel (8), be provided with slave cylinder piston (5), in speed regulation cylinder cylinder barrel (10), be provided with speed regulation cylinder piston (11); The piston rod (6) that is arranged in work cylinder barrel (8) and speed regulation cylinder cylinder barrel (10) passes cylinder cap (9); One end of piston rod (6) is connected with speed regulation cylinder piston (11); The other end stretches out outside the front end housing (7), and slave cylinder piston (5) is arranged on the piston rod (6); On work cylinder barrel (8), be provided with filler opening and return opening (4); In speed regulation cylinder cylinder barrel (10), be full of magnetic rheological liquid (12), the parallelly connected damp tube of processing by permeability magnetic material (3) that is provided with speed regulation cylinder cylinder barrel (10), the two ends of damp tube (3) link to each other with speed regulation cylinder piston (11) chamber, both sides respectively; The inside of damp tube (3) has damping hole (2), is provided with electromagnetic coil (1) in damping hole (2) outside.
2. variable-speed oil hydraulic cylinder according to claim 1 is characterized in that: the parallelly connected one group of damp tube (3) that is provided with speed regulation cylinder cylinder barrel (10).
3. variable-speed oil hydraulic cylinder according to claim 1 is characterized in that: filler opening and return opening (4) are arranged on front end housing (7) and the middle cylinder cap (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110306067A CN102322458A (en) | 2011-10-11 | 2011-10-11 | The variable-speed oil hydraulic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110306067A CN102322458A (en) | 2011-10-11 | 2011-10-11 | The variable-speed oil hydraulic cylinder |
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| CN102322458A true CN102322458A (en) | 2012-01-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110306067A Pending CN102322458A (en) | 2011-10-11 | 2011-10-11 | The variable-speed oil hydraulic cylinder |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104285066A (en) * | 2012-04-30 | 2015-01-14 | 伊顿公司 | Combined hydraulic/pneumatic actuation system with internal pneumatic piston |
| CN105298964A (en) * | 2015-11-10 | 2016-02-03 | 中国工程物理研究院总体工程研究所 | Stabilizing device for hydraulic vibrating table |
| CN106122169A (en) * | 2016-08-31 | 2016-11-16 | 浙江金洲管道工业有限公司 | A kind of pneumatic integrating device of band hydraulic damping |
| CN106907362A (en) * | 2017-04-14 | 2017-06-30 | 中国船舶重工集团公司第七0四研究所 | Subtracting based on magnetic flow liquid shakes gyroscopic procession control system |
| CN109899338A (en) * | 2019-03-29 | 2019-06-18 | 南京工业职业技术学院 | One kind firing-Electromagnetic heating driving bouncing mechanism |
| CN113803322A (en) * | 2021-08-24 | 2021-12-17 | 昆明理工大学 | Nano magnetic fluid gap sealing high-speed hydraulic cylinder |
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| GB2203195A (en) * | 1987-03-19 | 1988-10-12 | Festo Kg | Circuit for operating a fluid-pressure driven piston |
| DE10125308A1 (en) * | 2001-05-21 | 2002-11-28 | Guido Grimm | MR-compatible fluid controlled drive and travel limit system presets travel by adjusting position between two pistons |
| CN2900921Y (en) * | 2006-04-13 | 2007-05-16 | 桂林电子科技大学 | Magnetic flux damper and magnetic rheological pneumatic servo system |
| CN101435448A (en) * | 2007-11-14 | 2009-05-20 | 玛涅蒂玛瑞利动力系公开有限公司 | Combined actuator with rheological control brake |
| CN101514734A (en) * | 2009-03-30 | 2009-08-26 | 东南大学 | Air pressure transmitting type magneto-rheological damper |
| CN202251219U (en) * | 2011-10-11 | 2012-05-30 | 南京工业职业技术学院 | Speed adjustable hydraulic cylinder |
-
2011
- 2011-10-11 CN CN201110306067A patent/CN102322458A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2203195A (en) * | 1987-03-19 | 1988-10-12 | Festo Kg | Circuit for operating a fluid-pressure driven piston |
| DE10125308A1 (en) * | 2001-05-21 | 2002-11-28 | Guido Grimm | MR-compatible fluid controlled drive and travel limit system presets travel by adjusting position between two pistons |
| CN2900921Y (en) * | 2006-04-13 | 2007-05-16 | 桂林电子科技大学 | Magnetic flux damper and magnetic rheological pneumatic servo system |
| CN101435448A (en) * | 2007-11-14 | 2009-05-20 | 玛涅蒂玛瑞利动力系公开有限公司 | Combined actuator with rheological control brake |
| CN101514734A (en) * | 2009-03-30 | 2009-08-26 | 东南大学 | Air pressure transmitting type magneto-rheological damper |
| CN202251219U (en) * | 2011-10-11 | 2012-05-30 | 南京工业职业技术学院 | Speed adjustable hydraulic cylinder |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104285066A (en) * | 2012-04-30 | 2015-01-14 | 伊顿公司 | Combined hydraulic/pneumatic actuation system with internal pneumatic piston |
| CN104285066B (en) * | 2012-04-30 | 2016-10-05 | 伊顿公司 | There is the hydraulic/pneumatic convolution actuating system of internal air rammer |
| CN105298964A (en) * | 2015-11-10 | 2016-02-03 | 中国工程物理研究院总体工程研究所 | Stabilizing device for hydraulic vibrating table |
| CN106122169A (en) * | 2016-08-31 | 2016-11-16 | 浙江金洲管道工业有限公司 | A kind of pneumatic integrating device of band hydraulic damping |
| CN106122169B (en) * | 2016-08-31 | 2018-07-27 | 浙江金洲管道工业有限公司 | A kind of pneumatic integrating device with hydraulic damping |
| CN106907362A (en) * | 2017-04-14 | 2017-06-30 | 中国船舶重工集团公司第七0四研究所 | Subtracting based on magnetic flow liquid shakes gyroscopic procession control system |
| CN106907362B (en) * | 2017-04-14 | 2018-08-21 | 中国船舶重工集团公司第七0四研究所 | Subtracting based on magnetorheological fluid shakes gyroscopic procession control system |
| CN109899338A (en) * | 2019-03-29 | 2019-06-18 | 南京工业职业技术学院 | One kind firing-Electromagnetic heating driving bouncing mechanism |
| CN113803322A (en) * | 2021-08-24 | 2021-12-17 | 昆明理工大学 | Nano magnetic fluid gap sealing high-speed hydraulic cylinder |
| CN113803322B (en) * | 2021-08-24 | 2022-11-01 | 昆明理工大学 | Nano magnetic fluid gap sealing high-speed hydraulic cylinder |
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Application publication date: 20120118 |