CN202228470U - Magneto-rheological fluid gas-liquid damping cylinder - Google Patents
Magneto-rheological fluid gas-liquid damping cylinder Download PDFInfo
- Publication number
- CN202228470U CN202228470U CN2011203841087U CN201120384108U CN202228470U CN 202228470 U CN202228470 U CN 202228470U CN 2011203841087 U CN2011203841087 U CN 2011203841087U CN 201120384108 U CN201120384108 U CN 201120384108U CN 202228470 U CN202228470 U CN 202228470U
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- cylinder
- hydraulic cylinder
- piston
- damping
- liquid
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Abstract
The utility model discloses a magneto-rheological fluid gas-liquid damping cylinder, which comprises an air cylinder drum and a hydraulic cylinder drum which are connected into a whole through a middle cylinder cover. A rear cylinder cover is arranged at the end portion of the hydraulic cylinder drum, and a front cylinder cover is arranged at the end portion of the air cylinder drum. An air cylinder piston is arranged in the air cylinder drum, and a hydraulic cylinder piston is arranged in the hydraulic cylinder drum. Piston rods located in the air cylinder drum and the hydraulic cylinder drum penetrate through the middle cylinder cover, one ends of the piston rods are connected with the hydraulic cylinder piston, the other ends of the piston rods extend out of the front cylinder cover, and the air cylinder pistons are arranged on the piston rods. An air inlet and an air outlet are arranged on the air cylinder drum. Magneto-rheological fluid is filled in the hydraulic cylinder drum, a damping tube made of magnetic conducting materials is in parallel connection with the hydraulic cylinder drum, and two ends of the damping tube are respectively connected with cavities on two sides of the hydraulic cylinder piston. A damping hole is arranged in the damping tube, and an electromagnetic coil is arranged on the outer side of the damping hole. The magneto-rheological fluid gas-liquid damping cylinder is convenient to adjust and high in speed control accuracy.
Description
Technical field
The utility model relates to a kind of cylinder, specifically a kind ofly is used for air-driven magnetic flow liquid gas-liquid damping cylinder.
Background technique
During common cylinder operation,, can produce " creeping " or " walking certainly " phenomenon, make the job insecurity of cylinder if external load changes greatly.This is because cylinder adopts the bigger air of compressibility to make the cause of medium.For accurately control cylinder operating rate and position, make cylinder moving steady, generally adopt gas-liquid damping cylinder.
Gas-liquid damping cylinder is combined by cylinder and oil hydraulic cylinder; It is to be power source with pressurized air, utilizes the incompressibility of fluid and the movement velocity that control fluid flow obtains the easy motion and the regulating piston of piston, so; Compare with cylinder; The gas-liquid damping cylinder motion is steady, and off-position is accurate, and noise is little; Compare the good economy performance of gas-liquid damping cylinder with oil hydraulic cylinder.Gas-liquid damping cylinder has Pneumatic Transmission and hydraulicdriven advantage simultaneously.
But the gas-liquid damping cylinder that uses at present for adjustment movement speed, also is required to be oil hydraulic cylinder configuration one-way valve and throttle valve; Be used to regulate the movement velocity of hydraulic cylinder piston; Also be required to be oil hydraulic cylinder configuration recharging oil device simultaneously, the leakage that is used for replenishing oil hydraulic circuit, this just makes the oil hydraulic circuit structure comparatively complicated; And regulate inconvenience, the cylinder operation velocity control accuracy is lower.
Summary of the invention
The purpose of the utility model provides a kind of magnetic flow liquid gas-liquid damping cylinder; This magnetic flow liquid gas-liquid damping cylinder need not the required one-way valve of common gas-liquid damping cylinder, throttle valve and recharging oil device; Utilize the character of magnetic rheological liquid viscosity generation significant change under the action of a magnetic field; The movement velocity of control hydraulic cylinder piston, thereby the movement velocity of control cylinder piston.This magnetic flow liquid gas-liquid damping cylinder is simple in structure, easy to adjust, and velocity control accuracy is high.
The utility model is realized through following technological scheme:
A kind of magnetic flow liquid gas-liquid damping cylinder is characterized in that: this magnetic flow liquid gas-liquid damping cylinder comprises cylinder barrel and oil hydraulic cylinder cylinder barrel, and cylinder barrel and oil hydraulic cylinder cylinder barrel link into an integrated entity through middle cylinder cap; Be provided with back cylinder cover in oil hydraulic cylinder cylinder barrel end, be provided with front end housing in the cylinder barrel end; In cylinder barrel, be provided with cylinder piston, in the oil hydraulic cylinder cylinder barrel, be provided with hydraulic cylinder piston; The piston rod that is arranged in cylinder barrel and oil hydraulic cylinder cylinder barrel passes cylinder cap, and an end of piston rod is connected with hydraulic cylinder piston, and the other end stretches out outside the front end housing, and cylinder piston is arranged on the piston rod; On cylinder barrel, be provided with suction port and relief opening; In the oil hydraulic 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 oil hydraulic cylinder cylinder barrel, the two ends of damp tube link to each other with chamber, hydraulic cylinder piston both sides respectively; The inside of damp tube has damping hole, is provided with electromagnetic coil in the damping hole outside.
In the utility model, suction port and relief opening are arranged on front end housing and the middle cylinder cap.
In the utility model, electromagnetic coil is skeleton with the 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.
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.Through changing magnetic intensity, just can change the viscosity of the magnetic rheological liquid of the damping hole of flowing through.
When the magnetic flow liquid gas-liquid damping cylinder is worked; Through the inlet and outlet mouth of cylinder, promote cylinder piston and move, because cylinder piston and hydraulic cylinder piston are for being rigidly connected to a certain direction; Hydraulic cylinder piston is synchronized with the movement thereupon during the cylinder piston motion; In the effect of pressure reduction, the magnetic rheological liquid in the oil hydraulic cylinder will produce through the damping hole in the damp tube and flow, and the movement velocity of piston rod depends on the magnetic rheological liquid flow of the damping hole of flowing through.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 damp tube 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 utility model need not the required one-way valve of common gas-liquid damping cylinder, throttle valve and recharging oil device; Utilize the character of magnetic rheological liquid viscosity generation significant change under the action of a magnetic field; The movement velocity of control hydraulic cylinder piston, thus the movement velocity of control cylinder piston is simple in structure; Easy to adjust, velocity control accuracy is high.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Embodiment
Specify the utility model below in conjunction with accompanying drawing and embodiment.
As shown in Figure 1; A kind of magnetic flow liquid gas-liquid damping cylinder; Comprise cylinder barrel 8, oil hydraulic cylinder cylinder barrel 10, middle cylinder cap 9 links into an integrated entity cylinder barrel 8 and oil hydraulic cylinder cylinder barrel 10, and piston rod 6 links into an integrated entity cylinder piston 5 and hydraulic cylinder piston 11; The piston rod external part of cylinder barrel 8 is equipped with front end housing 7, and the tail end of oil hydraulic cylinder cylinder barrel 10 is equipped with back cylinder cover 13.Parallelly connected with oil hydraulic cylinder the damp tube 3 that an inside has damping hole 2 is housed; Two ends link to each other with the chamber, hydraulic cylinder piston 11 both sides of oil hydraulic cylinder cylinder barrel 10 respectively; Damp tube 3 is equipped with electromagnetic coil 1 in the outside that is positioned at damping hole 2; Damp tube 3 is processed by permeability magnetic material, is full of magnetic rheological liquid 12 in the oil hydraulic cylinder.
Electromagnetic coil 1 is a skeleton with damp tube 3; Energising will produce magnetic field later in damping hole 2; The size of magnetic flux depends on through the size of current on the electromagnetic coil 1, can change the magnetic intensity in the damping hole 2 through the control electric current, thereby changes the viscosity of magnetic rheological liquid 12.
When the magnetic flow liquid gas-liquid damping cylinder was worked, through the inlet and outlet mouth 4 of configuration in front end housing 7 and the middle cylinder cap 9, pressurized air promoted cylinder piston 5 and moves to a certain direction; Because cylinder piston 5 and hydraulic cylinder piston 11 are for being rigidly connected, hydraulic cylinder piston 11 moves thereupon synchronously in the same way during cylinder piston 5 motions, and at this moment the magnetic rheological liquid 12 in the oil hydraulic cylinder cylinder barrel 10 will produce through the damping hole in the damp tube 32 and flow; Thereby the motion of hydraulic cylinder piston 11 receives the damping function of magnetic rheological liquid 12; At this moment cylinder piston 5 depends on the flow of magnetic rheological liquid 12 through damping hole 2 in the damp tube 3 with the movement velocity of hydraulic 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 cylinder piston 5 is lower with the movement velocity of hydraulic 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 cylinder piston 5 and the movement velocity of hydraulic 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 cylinder piston 5 motions, and adjustment process can realize automatic control.
Claims (2)
1. magnetic flow liquid gas-liquid damping cylinder, it is characterized in that: this magnetic flow liquid gas-liquid damping cylinder comprises cylinder barrel (8) and oil hydraulic cylinder cylinder barrel (10), cylinder barrel (8) links into an integrated entity through middle cylinder cap (9) with oil hydraulic cylinder cylinder barrel (10); Be provided with back cylinder cover (13) in oil hydraulic cylinder cylinder barrel (10) end, be provided with front end housing (7) in cylinder barrel (8) end; In cylinder barrel (8), be provided with cylinder piston (5), in oil hydraulic cylinder cylinder barrel (10), be provided with hydraulic cylinder piston (11); The piston rod (6) that is arranged in cylinder barrel (8) and oil hydraulic cylinder cylinder barrel (10) passes cylinder cap (9); One end of piston rod (6) is connected with hydraulic cylinder piston (11); The other end stretches out outside the front end housing (7), and cylinder piston (5) is arranged on the piston rod (6); On cylinder barrel (8), be provided with suction port and relief opening (4); In oil hydraulic 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 oil hydraulic cylinder cylinder barrel (10), the two ends of damp tube (3) link to each other with hydraulic 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. magnetic flow liquid gas-liquid damping cylinder according to claim 1 is characterized in that: suction port and relief 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 |
|---|---|---|---|
| CN2011203841087U CN202228470U (en) | 2011-10-11 | 2011-10-11 | Magneto-rheological fluid gas-liquid damping cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203841087U CN202228470U (en) | 2011-10-11 | 2011-10-11 | Magneto-rheological fluid gas-liquid damping cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202228470U true CN202228470U (en) | 2012-05-23 |
Family
ID=46079057
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203841087U Expired - Fee Related CN202228470U (en) | 2011-10-11 | 2011-10-11 | Magneto-rheological fluid gas-liquid damping cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202228470U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107989851A (en) * | 2017-12-05 | 2018-05-04 | 重庆大学 | A kind of air cylinder structure based on magnetic converting technique and controllable throwing robot |
| CN112324744A (en) * | 2020-11-17 | 2021-02-05 | 崔蝶 | Buffer hydraulic oil cylinder |
| CN116006531A (en) * | 2023-03-28 | 2023-04-25 | 扬州通海汽车配件有限公司 | Landing leg of semitrailer |
-
2011
- 2011-10-11 CN CN2011203841087U patent/CN202228470U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107989851A (en) * | 2017-12-05 | 2018-05-04 | 重庆大学 | A kind of air cylinder structure based on magnetic converting technique and controllable throwing robot |
| CN112324744A (en) * | 2020-11-17 | 2021-02-05 | 崔蝶 | Buffer hydraulic oil cylinder |
| CN116006531A (en) * | 2023-03-28 | 2023-04-25 | 扬州通海汽车配件有限公司 | Landing leg of semitrailer |
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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: 20120523 Termination date: 20141011 |
|
| EXPY | Termination of patent right or utility model |