CN205383131U - Built -in magneto -rheological fluid brake's pendulum actuating cylinder - Google Patents
Built -in magneto -rheological fluid brake's pendulum actuating cylinder Download PDFInfo
- Publication number
- CN205383131U CN205383131U CN201521089794.XU CN201521089794U CN205383131U CN 205383131 U CN205383131 U CN 205383131U CN 201521089794 U CN201521089794 U CN 201521089794U CN 205383131 U CN205383131 U CN 205383131U
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- China
- Prior art keywords
- permanent magnet
- magnet retainer
- chamber
- retainer
- cylinder
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- Expired - Fee Related
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Abstract
The utility model relates to a pendulum actuating cylinder, especially a built -in magneto -rheological fluid brake's pendulum actuating cylinder. This pendulum actuating cylinder includes the transmission shaft, the left end lid, the dog, the cylinder body, a stator, the braking chamber, the rotor dish, the blade, right -hand member lid and permanent magnet no. 1, transmission shaft and blade rigid connection, the blade is arranged in the drive chamber of cylinder body, the drive intracavity at the cylinder body is fixed to the dog, this dog parts the air inlet of cylinder with the gas outlet, cylinder body and right -hand member lid, the rotor dish constitutes a magnetorheological suspensions's braking chamber, be full of magnetorheological suspensions in the braking chamber, and drive the chamber and brake the chamber coaxially, the right side of rotor dish is equipped with the retaining ring simultaneously, the stator includes the fixed magnets holder and the moving magnet holder of living, the fixed magnets holder links to each other with permanent magnet evenly distributed, the utility model discloses a can utilize the motor to realize the circumferential direction of moving magnet holder alive, closing direction from the control permanent magnet magnetic circuit that comes, can realize the braking, also can realize stepping control, not only economize on electricity, and dependable performance, and convenient for operation.
Description
Technical field
This utility model relates to a kind of oscillating cylinder, the oscillating cylinder of especially a kind of built-in magnetorheological fluid brake.
Background technology
Oscillating cylinder is common pneumatic apparatus.It is mainly used in the operations such as the clamping of workpiece, upset.If arranging block in certain angle, it may be achieved cylinder swings within the scope of restriction.
In existing technology, oscillating cylinder lacks effective brake unit, and when rotating, precision cannot ensure, is subject to the impact of load and air pressure.Magnetic flow liquid is a kind of novel intelligent material that recent domestic begins one's study.Owing to magnetic flow liquid has characteristic and the liquid fluidity of magnetic material, under the effect of externally-applied magnetic field, the rheological behavior of magnetic flow liquid changes rapidly, and changes along with the Strength Changes of external magnetic field.Owing to the viscosity B coefficent of magnetic flow liquid is reversible, rapid and easily controllable so that magnetic flow liquid is used widely in fields such as automobile, machinery, buildings.Chinese utility model patent CN101865175A, discloses the oscillating cylinder of a kind of built-in magnetorheological fluid brake, including main shaft, left shell, right shell body, limited block, middle shell, cylinder blade, key, rotating disk, back-up ring, solenoid；Main shaft is connected with cylinder blade, together with middle shell is fastened and connected mutually with left shell, match with the inner surface of the inner surface of left shell, middle shell respectively and form the swing chamber of cylinder blade in the axial two sides of cylinder blade, limited block is fixed between left shell and middle shell, together with middle shell is fastened and connected mutually with right shell body, form the brake chamber of placing rotary disk and magnetic flow liquid, drive chamber to share main shaft with brake chamber.Solenoid is placed between middle shell and right shell body, adopts tight fit between coil set internal diameter and two housings, and magnetic flow liquid riddles in the middle of middle shell right shell body and rotating disk.Solenoid is in formation magnetic field, space under the function of current, and by middle shell and left shell, rotating disk, magnetic flow liquid forms effective magnetic circuit.When solenoid energising, magnetic retention in magnetic flow liquid is magnetized, and be chainlike distribution along magnetic line of force direction, the chain structure in magnetic flow liquid to be sheared by braking dish, thus strengthening the resistance of rotation, serving the effect of braking, braking moment can continuously adjustabe within the specific limits according to supply electric current.The solenoid that above-mentioned utility model patent uses the power on, as magnetic source, needs when braking directly to provide larger current to solenoid, and consuming electric power is high.
Summary of the invention
In order to overcome the deficiency that existing oscillating cylinder energy consumption is high, this utility model provides the oscillating cylinder of a kind of built-in magnetorheological fluid brake.
nullThis utility model solves its technical problem and be the technical scheme is that the oscillating cylinder of a kind of built-in magnetorheological fluid brake，Including power transmission shaft、Left end cap、Block、Cylinder body、Stator、Brake chamber、Rotor disk、Blade、Right end cap and permanent magnet，Power transmission shaft is connected with left end cap and right end cap by bearing，Power transmission shaft and blade are rigidly connected，Blade is arranged in the driving chamber of cylinder body，Block is fixed on the driving intracavity of cylinder body，The air inlet of cylinder is separated by this block with gas outlet，Cylinder body and right end cap、Rotor disk constitutes the brake chamber of a magnetic flow liquid，Brake chamber is full of magnetic flow liquid，And drive chamber coaxial with brake chamber，Rotor disk is connected with power transmission shaft by key，The right side of rotor disk is provided with back-up ring to limit moving axially of rotor disk simultaneously，Stator includes fixed magnet retainer and movable magnet retainer，Fixed magnet retainer is uniformly distributed with permanent magnet and is connected，Movable magnet retainer is uniformly distributed with permanent magnet and is connected，And to be axially positioned at housing side by side.
According to another embodiment of the present utility model, farther including fixed magnet retainer and movable magnet retainer all adopts permeability magnetic material to make, movable magnet retainer is provided with control arm.
According to another embodiment of the present utility model, farther include the polarity of permanent magnet to be radially arranged, fixed magnet retainer is connected with one group of permanent magnet respectively with in movable magnet retainer, one group has 2 to 3 block permanent magnets, identical with the permanent magnet polarity in group, the polarity of one group of permanent magnet adjacent in same fixed magnet retainer or movable magnet retainer is different.
The beneficial effects of the utility model are, this utility model can utilize motor to realize circumferentially rotating of movable magnet retainer, thus controlling the closing direction of permanent magnet magnetic circuit, braking can be realized, it is possible to realize multiple-rank control, not only economize on electricity, and dependable performance, easy to operate, and when magnetic circuit is not passed through magnetic flow liquid, work normally without influence on oscillating cylinder.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, this utility model is further illustrated.
Fig. 1 is structural representation of the present utility model；
Fig. 2 is this utility model view of permanent magnet when not braking；
The view of permanent magnet when Fig. 3 is this utility model one grade braking；
The view of permanent magnet when Fig. 4 is this utility model two gear braking；
1. power transmission shaft in figure, 2. left end cap, 3. block, 4. cylinder body, 5. stator, 6. brake chamber, 7. rotor disk, 8. servomotor, 9. blade, 10. right end cap, 11. control arms, 12. back-up ring, 13. bearings, 51. fixed magnet retainers, 52. movable magnet retainers, 53. permanent magnets.
Detailed description of the invention
If Fig. 1 is structural representation of the present utility model, Fig. 2 is this utility model view of permanent magnet when not braking, the view of permanent magnet when Fig. 3 is this utility model one grade braking, the view of permanent magnet when Fig. 4 is this utility model two gear braking
nullA kind of oscillating cylinder of built-in magnetorheological fluid brake，Including power transmission shaft 1、Left end cap 2、Block 3、Cylinder body 4、Stator 5、Brake chamber 6、Rotor disk 7、Blade 9、Right end cap 10、Fixed magnet retainer 51、Movable magnet retainer 52 and permanent magnet 53，Power transmission shaft 1 is connected with left end cap 2 and right end cap 10 by bearing 13，Power transmission shaft 1 and blade 9 are rigidly connected，Blade 9 is arranged in the driving chamber of cylinder body 4，Block 3 is fixed on the driving intracavity of cylinder body 4，The air inlet of cylinder is separated by this block 3 with gas outlet，Cylinder body 4 and right end cap 10、Rotor disk 7 constitutes the brake chamber 6 of a magnetic flow liquid，Brake chamber 6 is full of magnetic flow liquid，And drive chamber coaxial with brake chamber 6，Rotor disk 7 is connected with power transmission shaft 1 by key，The right side of rotor disk 7 is provided with back-up ring 12 to limit moving axially of rotor disk 7 simultaneously，Stator 5 includes fixed magnet retainer 51 and movable magnet retainer 52，Fixed magnet retainer 51 is uniformly distributed with permanent magnet 53 and is connected，Movable magnet retainer 52 is uniformly distributed with permanent magnet 53 and is connected，And to be axially positioned at housing side by side，Fixed magnet retainer 51 and movable magnet retainer 52 all adopt permeability magnetic material to make，Movable magnet retainer 52 is provided with control arm 11，Control arm 11 is connected with servomotor 8，The polarity of permanent magnet 53 is to be radially arranged，Fixed magnet retainer 51 is connected with one group of permanent magnet 53 respectively with in movable magnet retainer 52，One group has 2 to 3 block permanent magnets 53，Identical with permanent magnet 53 polarity in group，The polarity of one group of permanent magnet 53 adjacent in same fixed magnet retainer 51 or movable magnet retainer 52 is different.
In this utility model, the arrangement of permanent magnet 53 takes polarity to be radially arranged, and namely end face is a pole, ground is a pole, and in same fixed magnet retainer 51, adjacent permanent magnets 53 is intermediate polarity different.When permanent magnet 53 polarity on the permanent magnet 53 on movable magnet retainer 52 with axially adjacent fixed magnet retainer 51 is different, the permanent magnet 53 of movable magnet retainer 52, fixed magnet retainer 51 permanent magnet 53 form a closed magnetic circuit (Fig. 2) by housing.But owing to magnetic circuit is not passed through magnetic flow liquid, so the magnetic current characteristic of magnetic flow liquid does not change, it is now in non-brake state.Movable magnet retainer 52 is made to rotate a certain angle (Fig. 3) by motor, making the permanent magnet 53 on movable magnet retainer 52 identical with permanent magnet 53 polarity on axially adjacent fixed magnet retainer 51, now the permanent magnet 53 of movable magnet retainer 52, the permanent magnet 53 of fixed magnet retainer 51, permanent magnet that magnetic flow liquid, same retainer are adjacent form closed magnetic circuit.Owing to part closed magnetic circuit both passes through magnetic flow liquid, therefore the magnetic current characteristic of magnetic flow liquid changes because of change of magnetic field strength, fixed magnet retainer 51 and permanent magnet thereon 53, movable magnet retainer 52 and permanent magnet thereon 53 and rotor disk 7 constitute brake, one less braking moment of the now in running order generation of braking dish.Additionally, again movable magnet retainer 52 is turned an angle, make the 53 groups of polarity of permanent magnet 53 groups and the permanent magnet being relatively fixed on Magnet retainer 51 on movable magnet retainer 52 identical, closed magnetic circuit (Fig. 4) is formed between the permanent magnet 53 that in same retainer, adjacent polarity is different, now all the magnetic line of force is through magnetic flow liquid, and magneto-rheologic liquid brake produces bigger braking moment.This braking oscillating cylinder has capacity of resisting disturbance strong, and location is reliable, advantage easy to use.When magnetic field force is sufficiently large, and namely rheological effect is sufficiently large, it may be achieved the location of system is locked, solve the problem that oscillating cylinder rigidity is low.With reference to above-described embodiment, according to use occasion, it is possible to arrange three pieces or more block permanent magnet 53 is one group, it may be achieved the braking of many grades of moments.Its effect is apparent from, and no longer carefully states in this article.This utility model can utilize motor to realize circumferentially rotating of movable magnet retainer, thus controlling the closing direction of permanent magnet magnetic circuit, braking can be realized, also multiple-rank control can be realized, not only economize on electricity, and dependable performance, easy to operate, and when magnetic circuit is not passed through magnetic flow liquid, work normally without influence on oscillating cylinder.
Claims (3)
- null1. the oscillating cylinder of a built-in magnetorheological fluid brake，It is characterized in that，Including power transmission shaft (1)、Left end cap (2)、Block (3)、Cylinder body (4)、Stator (5)、Brake chamber (6)、Rotor disk (7)、Blade (9)、Right end cap (10)、Bearing (13)、Fixed magnet retainer (51)、Movable magnet retainer (52) and permanent magnet (53)，Power transmission shaft (1) is connected with left end cap (2) and right end cap (10) by bearing (13)，Power transmission shaft (1) and blade (9) are rigidly connected，Blade (9) is arranged in the driving chamber of cylinder body (4)，Block (3) is fixed on the driving intracavity of cylinder body (4)，The air inlet of cylinder is separated by this block (3) with gas outlet，Cylinder body (4) and right end cap (10)、Rotor disk (7) constitutes the brake chamber (6) of a magnetic flow liquid，Brake chamber (6) is full of magnetic flow liquid，And drive chamber coaxial with brake chamber (6)，Rotor disk (7) is connected with power transmission shaft (1) by key，The right side of rotor disk (7) is provided with back-up ring (12) to limit moving axially of rotor disk (7) simultaneously，Stator (5) includes fixed magnet retainer (51) and movable magnet retainer (52)，Fixed magnet retainer (51) is uniformly distributed with permanent magnet (53) and is connected，Movable magnet retainer (52) is uniformly distributed with permanent magnet (53) and is connected，And to be axially positioned at housing side by side.
- 2. the oscillating cylinder of a kind of built-in magnetorheological fluid brake according to claim 1, it is characterized in that, fixed magnet retainer (51) and movable magnet retainer (52) all adopt permeability magnetic material to make, movable magnet retainer (52) is provided with control arm (11), and control arm (11) is connected with servomotor (8).
- 3. the oscillating cylinder of a kind of built-in magnetorheological fluid brake according to claim 1, it is characterized in that, the polarity of permanent magnet (53) is to be radially arranged, fixed magnet retainer (51) is connected with one group of permanent magnet (53) respectively with in movable magnet retainer (52), one group has 2 to 3 block permanent magnets (53), identical with permanent magnet (53) polarity in group, the polarity of one group of permanent magnet (53) adjacent in same fixed magnet retainer (51) or movable magnet retainer (52) is different.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521089794.XU CN205383131U (en) | 2015-12-24 | 2015-12-24 | Built -in magneto -rheological fluid brake's pendulum actuating cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521089794.XU CN205383131U (en) | 2015-12-24 | 2015-12-24 | Built -in magneto -rheological fluid brake's pendulum actuating cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205383131U true CN205383131U (en) | 2016-07-13 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521089794.XU Expired - Fee Related CN205383131U (en) | 2015-12-24 | 2015-12-24 | Built -in magneto -rheological fluid brake's pendulum actuating cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205383131U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109268406A (en) * | 2018-10-18 | 2019-01-25 | 中国矿业大学 | A kind of magnetic fluid disk brake |
| CN114198425A (en) * | 2022-01-25 | 2022-03-18 | 江苏省特种设备安全监督检验研究院 | Double-shear magnetorheological clutch under permanent magnet excitation |
-
2015
- 2015-12-24 CN CN201521089794.XU patent/CN205383131U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109268406A (en) * | 2018-10-18 | 2019-01-25 | 中国矿业大学 | A kind of magnetic fluid disk brake |
| CN114198425A (en) * | 2022-01-25 | 2022-03-18 | 江苏省特种设备安全监督检验研究院 | Double-shear magnetorheological clutch under permanent magnet excitation |
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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: 20160713 Termination date: 20161224 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |