CN103453053A - Magnetorheological brake - Google Patents
Magnetorheological brake Download PDFInfo
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- CN103453053A CN103453053A CN2013103939036A CN201310393903A CN103453053A CN 103453053 A CN103453053 A CN 103453053A CN 2013103939036 A CN2013103939036 A CN 2013103939036A CN 201310393903 A CN201310393903 A CN 201310393903A CN 103453053 A CN103453053 A CN 103453053A
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Abstract
The invention discloses a magnetorheological brake and belongs to the technical field of mechanical brake. A magnetism-conducting ring (14) is arranged in an annular slot of an outer magnetism-isolating shell (10), and a magnetism-isolating cup (15) is arranged in an annular through slot of a right magnetism-conducting shell; a sliding magnetism-conducting shaft (21) and a permanent magnet (22) are inserted in circular holes of a right magnetism-conducting shell II (19) and an inner magnetism-isolating shell (6), and the magnetism-isolating cup and the sliding magnetism-conducting shaft are connected; an extension spring group (16) is arranged in a sealed cavity (17) formed by the magnetism-isolating cup and the right magnetism-conducting shell II, and a pressure oil inlet (18) is formed in the magnetism-isolating cup. The magnetorheological brake disclosed by the invention realizes magnetism supply brake to provide controllable power by utilizing a magnet exciting coil under normal operation conditions; when the magnet exciting coil breaks down or powers off, a magnetism supply brake mode of the magnet exciting coil is quickly converted to a magnetism supply brake mode of the permanent magnet under the action of the extension spring group and the pressure oil in the sealed cavity, so that the continuity of the braking force of the magnetorheological brake is ensured, and the safety and the reliability of the magnetorheological brake are improved.
Description
Technical field
The present invention relates to a kind of magnetic rheological brake, belong to the mechanical braking technical field.
Background technique
Magnetic flow liquid is a kind of particle suspension liquid, mainly soft magnetic particles, base load liquid and the additive that is wrapped in particle surface, consists of.Owing to there being soft magnetic particles in magnetic flow liquid, it is to magnetic-field-sensitive, it is a kind of Intelligent magnetic functional material, under magnetic fields, obvious rheological effect will occur in magnetic flow liquid, soft magnetic particles wherein will be chain structure along magnetic direction arranges, and form numerous particle chains, and particle chain will hinder the free-flow of base load liquid, make magnetic flow liquid show as semisolid aspect macroscopical, and present certain shear yield stress.Magnetorheological characteristic due to its uniqueness, since magnetic flow liquid comes out, obtained application more and more widely in various fields such as automobile, machinery, Aero-Space, building, medical treatment, developed multiple magnetorheological product, having comprised: clutch, break, damper, burnishing device, hydrovalve, seal arrangement, composite component etc.
Magnetic rheological brake is as the application branch of magnetic flow liquid, have that braking response is fast, the brake member wearing and tearing than little, braking moment large, it is simple to control, it is little to vibrate, control the characteristics such as energy consumption is low, be a kind of comparatively desirable braking device, can avoid the control of traditional braking device complicated, bulky, expensive, the problems such as braking moment is not enough, weak heat-dissipating.There have been at present more magnetic rheological brake application example and patent documentation, the Chinese invention patent that is CN101225859A as publication number discloses " a kind of magnetic rheological brake " on 07 23rd, 2008, this break adopts permanent magnet as magnetic source, sustainable generation magnetic field, but its braking force is non-adjustable; The Chinese invention patent that publication number is CN102146968A discloses " a kind of multiple-disc type magnetorheological brake " on 08 10th, 2011, and this break field coil is easily dismantled, but can't realize the power-off brake function.Therefore there is a deficiency in visible existing magnetic rheological brake, all adopt field coil or permanent magnet independent for the magnetic mode, wherein permanent magnet is for the abampere good perfection, but braking force is unadjustable; And field coil easily produces the braking force disruption because outage or coil break down for magnetic-capacity, safety reliability is poor.
Summary of the invention
The problem existed for above-mentioned prior art, the invention provides a kind of magnetic rheological brake, realizes that magnetic rheological brake adopts field coil for magnetic brake under nominal situation, provides controlled braking force; And, when field coil breaks down or cut off the power supply, switching to fast the purpose that permanent magnet is braked for the magnetic mode, assurance braking force is not interrupted, and improves the safety reliability of magnetic rheological brake.
To achieve these goals, this magnetic rheological brake comprises brake axle, left magnetic conductive shell, right magnetic conductive shell and middle magnetic conductive shell, brake axle is arranged on the break axle center by bearing, middle magnetic conductive shell is bolted between left magnetic conductive shell and right magnetic conductive shell, left magnetic conductive shell and right magnetic conductive shell respectively by bolt with the outer of internal spline, every magnetic shell, be fixedly connected with, middle magnetic conductive shell, left magnetic conductive shell, outside in the space that magnetic shell and right magnetic conductive shell form, field coil is installed; With the interior of external splines, every magnetic shell, by bolt, with brake axle, be connected, be nested with the movable friction plate group in the interior outside every magnetic shell by spline, be nested with static friction sheet group every the inside of magnetic shell by spline outside, separate by septulum magnet ring interval between movable friction plate group and static friction sheet group;
Have circular groove every the right side of magnetic shell outward, right magnetic conductive shell is comprised of right magnetic conductive shell I and right magnetic conductive shell II two-part, form annular through groove between the external cylindrical surface of the inner cylindrical surface of right magnetic conductive shell I and right magnetic conductive shell II, this annular through groove is with circular groove position and the size every the magnetic shell right side is corresponding outward; The movable magnetic guiding loop of installing in the circular groove of magnetic shell end face outside, the movable installation every the magnetic cup in the annular through groove of right magnetic conductive shell, magnetic guiding loop with every the magnetic cup, be fixedly connected with; Movable slip magnetic conductive axis and the permanent magnet be fixed together that insert in right magnetic conductive shell II center and the interior circular hole of offering every the center of magnetic shell, be bolted and be integrated every magnetic cup and slip magnetic conductive axis, be equipped with in the closed cavity formed with right magnetic conductive shell II every the magnetic cup and the axial identical extension spring group of brake axle, offering the pressure oil import be communicated with closed cavity on the magnetic cup.
Permanent magnet is cylindrical and inserts the axial centre place in break.
At magnetic guiding loop with every all being adhesively fixed by mighty bond between the magnetic cup and between slip magnetic conductive axis and permanent magnet.
Compared with prior art, this magnetic rheological brake is provided with generation source, two kinds of magnetic field: field coil and permanent magnet, all can produce magnetic field between friction plate, realize that magnetic rheological brake adopts field coil for the magnetic brake pattern under nominal situation, provides controlled braking force; And when field coil breaks down or cut off the power supply, effect by extension spring group and Seal cage pressure oil switches to permanent magnet for the magnetic brake pattern by field coil fast for the magnetic brake pattern, guarantee the continuity of magnetic rheological brake braking force, improved Safety performance and the reliability of magnetic rheological brake.
The accompanying drawing explanation
Fig. 1 is agent structure schematic diagram of the present invention.
In figure: 1, brake axle, 2, end cap, 3, bearing, 4, end ring, 5, left magnetic conductive shell, 6, interior every magnetic shell, 7, the movable friction plate group, 8, static friction sheet group, 9, little magnetism resistent ring, 10, outward every magnetic shell, 11, middle magnetic conductive shell, 12, field coil, 13, right magnetic conductive shell I, 14, magnetic guiding loop, 15, every the magnetic cup, 16, the extension spring group, 17, closed cavity, 18, the pressure oil import, 19, right magnetic conductive shell II, 20, seal ring, 21, the slip magnetic conductive axis, 22, permanent magnet.
Embodiment
Below in conjunction with accompanying drawing, the present invention will be further described.
As shown in Figure 1, this magnetic rheological brake comprises brake axle 1, left magnetic conductive shell 5, right magnetic conductive shell and middle magnetic conductive shell 11, brake axle 1 is arranged on the break axle center by bearing 3, two bearings 3 by end ring 4 separately, and by end cap 2, install fixing, middle magnetic conductive shell 11 is bolted between left magnetic conductive shell 5 and right magnetic conductive shell, left magnetic conductive shell 5 and right magnetic conductive shell respectively by bolt with the outer of internal spline, every magnetic shell 10, be fixedly connected with, at middle magnetic conductive shell 11, left magnetic conductive shell 5, in the space of magnetic shell 10 and right magnetic conductive shell formation, field coil 12 is installed outward, with the interior of external splines, every magnetic shell 6, by bolt, with brake axle 1, be connected, be nested with movable friction plate group 7 in the interior outside every magnetic shell 6 by spline, be nested with static friction sheet group 8 every the inside of magnetic shell 10 by spline outside, between movable friction plate group 7 and static friction sheet group 8, by septulum magnet ring 9 intervals, separate, be full of magnetic flow liquid between friction plate, pass into certain electric current in field coil 12, can between the friction plate group, produce controlling magnetic field,
Have circular groove every the right side of magnetic shell 10 outward, right magnetic conductive shell is comprised of right magnetic conductive shell I 13 and right magnetic conductive shell II19 two-part, form annular through groove between the external cylindrical surface of the inner cylindrical surface of right magnetic conductive shell I13 and right magnetic conductive shell II19, this annular through groove is with circular groove position and the size every magnetic shell 10 right sides is corresponding outward, the movable magnetic guiding loop 14 of installing in the circular groove of magnetic shell 10 end faces outside, the movable installation every magnetic cup 15 in the annular through groove of right magnetic conductive shell, magnetic guiding loop 14 with every magnetic cup 15, be fixedly connected with, movable slip magnetic conductive axis 21 and the permanent magnet 22 be fixed together that insert in the center of right magnetic conductive shell II19 and the interior circular hole of offering every the center of magnetic shell 6, be bolted and be integrated every magnetic cup 15 and slip magnetic conductive axis 21, in the closed cavity 17 formed with right magnetic conductive shell II19 every magnetic cup 15, be equipped with and the axial identical extension spring group 16 of brake axle 1, offering the pressure oil import 18 be communicated with closed cavity 17 on magnetic cup 15, closed cavity 17 can be sealed pressure oil by seal ring 20, to prevent the seepage of pressure oil, guarantee that break of the present invention can run well, reduced maintenance cost, extended working life.
As of the present invention preferred, permanent magnet 22 is cylindrical and inserts the axial centre place in break, can guarantee the magnetic intensity maximum that permanent magnet 22 produces and be uniformly distributed.
As of the present invention preferred, at magnetic guiding loop 14 with every all being adhesively fixed by mighty bond between magnetic cup 15 and between slip magnetic conductive axis 21 and permanent magnet 22, when having saved processing cost, having reduced difficulty of processing, guaranteed the intensity be fixedly connected with.
As fully visible, there are two kinds of magnetic circuits in this magnetic rheological brake: field coil magnetic circuit and permanent magnet magnetic circuit.The magnetic circuit of field coil is: dynamic and static friction plate group 7,8 → right magnetic conductive shell II19 → magnetic guiding loop 14 → right magnetic conductive shell I13 → middle magnetic conductive shell 11 → left magnetic conductive shell 5 → dynamic and static friction plate group 7,8; The magnetic circuit of permanent magnet is: dynamic and static friction plate group 7,8 → right magnetic conductive shell II19 → slip magnetic conductive axis 21 → permanent magnet 22 → brake axle 1 → end ring 4 → left magnetic conductive shell 5 → dynamic and static friction plate group 7,8.
Above-mentioned two kinds of magnetic circuits can not worked simultaneously, and its concrete working procedure is as follows:
Middle magnetic conductive shell 11 in this magnetic rheological brake is fixedly connected with the break base, therefore magnetic conductive shell 11, left magnetic conductive shell 5, right magnetic conductive shell I13 in, all be fixed together transfixion every magnetic shell 10 and right magnetic conductive shell II19 outward, static friction sheet group 8 by spline be connected and also keep transfixion every magnetic shell 10 outward; In magnetic rheological brake normal operation process, one end of brake axle 1 and the extraneous equipment connection that needs braking, the other end and interiorly be bolted to connection every magnetic shell 6, due to the interior effect connected every magnetic shell 6 upper splines, movable friction plate group 7 will with brake axle 1 synchronous rotary.
In the equipment deboost phase, when field coil 12 fault-free, by pressure oil import 18 to injection pressure oil in closed cavity 17, because middle magnetic conductive shell 11, left magnetic conductive shell 5, right magnetic conductive shell I13, all be fixed together transfixion every magnetic shell 10 and right magnetic conductive shell II19 outward, so pressure oil will overcome the pulling force of extension spring group 16, make to be fixedly connected on the magnetic guiding loop 14 of one, every magnetic cup 15, slip magnetic conductive axis 21 and permanent magnet 22 slide to the right, magnetic guiding loop 14 is connected the magnetic circuit of field coil 12, and the air gap in permanent magnet 22 left sides becomes large, the magnetic resistance of permanent magnet magnetic circuit increases, permanent magnet 22 can't produce work magnetic field in the working clearance of friction plate group, so permanent magnet magnetic circuit now is in interrupt status.Pass into certain electric current in field coil 12, to produce magnetic field between movable friction plate group 7 and static friction sheet group 8, under the effect in this magnetic field, theomorphism will occur in the magnetic flow liquid in the working clearance of friction plate group, be that magnetic flow liquid will become semisolid, produce braking torque, stop the rotation of friction plate group, realized the controlled braking of external device by said process.
When field coil 12 breaks down or cuts off the power supply, the oil pressure of pressure oil import 18 will reduce, it is the oil pressure reduction in closed cavity 17, now be fixedly connected on the magnetic guiding loop 14 of one, every magnetic cup 15, slip magnetic conductive axis 21 and permanent magnet 22 under the pulling force effect of extension spring group 16 by slippage left, the air gap in permanent magnet 22 left sides reduces, the permanent magnet magnetic circuit is connected, in order to pass through the field coil magnetic circuit in the magnetic field that prevents permanent magnet 22, to cut off the magnetic circuit of field coil 12 during in slippage left every magnetic cup 15, realized the purpose of the excitation of field coil 12 to the quick conversion of excitation of permanent magnet 22, can prevent that with this phenomenon that braking is interrupted from appearring in field coil 12 when cutting off the power supply or breaking down, guaranteed the continuity of magnetic rheological brake braking force, Safety performance and the reliability of magnetic rheological brake have been improved.
Claims (3)
1. a magnetic rheological brake, comprise brake axle (1), left magnetic conductive shell (5), right magnetic conductive shell and middle magnetic conductive shell (11), brake axle (1) is arranged on the break axle center by bearing (3), middle magnetic conductive shell (11) is bolted between left magnetic conductive shell (5) and right magnetic conductive shell, left magnetic conductive shell (5) and right magnetic conductive shell respectively by bolt with the outer of internal spline, every magnetic shell (10), be fixedly connected with, in middle magnetic conductive shell (11), left magnetic conductive shell (5), in the space of magnetic shell (10) and right magnetic conductive shell formation, field coil (12) is installed outward, with the interior of external splines, every magnetic shell (6), by bolt, with brake axle (1), be connected, be nested with movable friction plate group (7) in the interior outside every magnetic shell (6) by spline, be nested with static friction sheet group (8) every the inside of magnetic shell (10) by spline outside, separate by little magnetism resistent ring (9) interval between movable friction plate group (7) and static friction sheet group (8),
It is characterized in that, have circular groove every the right side of magnetic shell (10) outside described, described right magnetic conductive shell is by right magnetic conductive shell I (13) and right magnetic conductive shell II(19) two-part form, right magnetic conductive shell I(13) inner cylindrical surface and right magnetic conductive shell II(19) external cylindrical surface between form annular through groove, this annular through groove is with corresponding every the circular groove position of magnetic shell (10) right side and size outward; The movable magnetic guiding loop (14) of installing in the circular groove of magnetic shell (10) end face outside, the movable installation every magnetic cup (15) in the annular through groove of right magnetic conductive shell, magnetic guiding loop (14) with every magnetic cup (15), be fixedly connected with; Right magnetic conductive shell II(19) in center and the interior circular hole of offering every the center of magnetic shell (6), activity inserts slip magnetic conductive axis (21) and the permanent magnet (22) be fixed together, be bolted and be integrated every magnetic cup (15) and slip magnetic conductive axis (21), every magnetic cup (15) and right magnetic conductive shell II(19) be equipped with in the closed cavity (17) that forms and the axial identical extension spring group (16) of brake axle (1), offering the pressure oil import (18) be communicated with closed cavity (17) on magnetic cup (15).
2. a kind of magnetic rheological brake according to claim 1, is characterized in that, permanent magnet (22) is cylindrical and inserts the axial centre place in break.
3. a kind of magnetic rheological brake according to claim 1, is characterized in that, at magnetic guiding loop (14) with every all being adhesively fixed by mighty bond between magnetic cup (15) and between slip magnetic conductive axis (21) and permanent magnet (22).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310393903.6A CN103453053B (en) | 2013-09-02 | 2013-09-02 | A kind of magnetic rheological brake |
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| CN201310393903.6A CN103453053B (en) | 2013-09-02 | 2013-09-02 | A kind of magnetic rheological brake |
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| CN103453053A true CN103453053A (en) | 2013-12-18 |
| CN103453053B CN103453053B (en) | 2016-04-20 |
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| CN201310393903.6A Expired - Fee Related CN103453053B (en) | 2013-09-02 | 2013-09-02 | A kind of magnetic rheological brake |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104747688A (en) * | 2015-03-03 | 2015-07-01 | 中国矿业大学 | Friction plate for magnetorheological transmission device |
| CN105952833A (en) * | 2016-04-28 | 2016-09-21 | 北京化工大学 | Seal damping vibration attenuation device with self-adaptive eccentricity adjustment function |
| CN106395672A (en) * | 2016-12-15 | 2017-02-15 | 福州大学 | Magneto-rheological effect-based elevator braking device with automatic protection function and elevator braking method |
| CN108582150A (en) * | 2018-06-12 | 2018-09-28 | 浙江工业大学 | A kind of submissive joint of composite excitation formula robot based on magnetorheological fluid |
| CN109227595A (en) * | 2018-06-12 | 2019-01-18 | 浙江工业大学 | A kind of submissive joint composite excitation coupling device of robot based on magnetorheological fluid |
| CN112138867A (en) * | 2020-09-14 | 2020-12-29 | 祁海红 | High-precision magnetic separator with automatic speed regulation function |
| CN114382804A (en) * | 2022-01-25 | 2022-04-22 | 江苏省特种设备安全监督检验研究院 | Double-shaft independently controllable single-disc brake based on double-coil excitation |
| CN117605776A (en) * | 2024-01-23 | 2024-02-27 | 华东交通大学 | Stator built-in magneto-rheological brake |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1070871A2 (en) * | 1999-07-19 | 2001-01-24 | Meritor Heavy Vehicle Systems, LLC | Reduced drag wet disk brake |
| CN101225859A (en) * | 2007-12-30 | 2008-07-23 | 江苏技术师范学院 | Magneto-rheologic liquid brake |
| CN202674106U (en) * | 2012-03-06 | 2013-01-16 | 浙江师范大学 | Extrusion magnetorheological brake |
| CN102927166A (en) * | 2012-11-16 | 2013-02-13 | 陈吉朋 | Clutch type magnetorheological fluid brake |
-
2013
- 2013-09-02 CN CN201310393903.6A patent/CN103453053B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1070871A2 (en) * | 1999-07-19 | 2001-01-24 | Meritor Heavy Vehicle Systems, LLC | Reduced drag wet disk brake |
| CN101225859A (en) * | 2007-12-30 | 2008-07-23 | 江苏技术师范学院 | Magneto-rheologic liquid brake |
| CN202674106U (en) * | 2012-03-06 | 2013-01-16 | 浙江师范大学 | Extrusion magnetorheological brake |
| CN102927166A (en) * | 2012-11-16 | 2013-02-13 | 陈吉朋 | Clutch type magnetorheological fluid brake |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104747688A (en) * | 2015-03-03 | 2015-07-01 | 中国矿业大学 | Friction plate for magnetorheological transmission device |
| CN105952833A (en) * | 2016-04-28 | 2016-09-21 | 北京化工大学 | Seal damping vibration attenuation device with self-adaptive eccentricity adjustment function |
| CN106395672A (en) * | 2016-12-15 | 2017-02-15 | 福州大学 | Magneto-rheological effect-based elevator braking device with automatic protection function and elevator braking method |
| CN108582150A (en) * | 2018-06-12 | 2018-09-28 | 浙江工业大学 | A kind of submissive joint of composite excitation formula robot based on magnetorheological fluid |
| CN109227595A (en) * | 2018-06-12 | 2019-01-18 | 浙江工业大学 | A kind of submissive joint composite excitation coupling device of robot based on magnetorheological fluid |
| CN112138867A (en) * | 2020-09-14 | 2020-12-29 | 祁海红 | High-precision magnetic separator with automatic speed regulation function |
| CN114382804A (en) * | 2022-01-25 | 2022-04-22 | 江苏省特种设备安全监督检验研究院 | Double-shaft independently controllable single-disc brake based on double-coil excitation |
| CN114382804B (en) * | 2022-01-25 | 2023-05-23 | 江苏省特种设备安全监督检验研究院 | Double-shaft independent controllable single-disc brake based on double-coil excitation |
| CN117605776A (en) * | 2024-01-23 | 2024-02-27 | 华东交通大学 | Stator built-in magneto-rheological brake |
| CN117605776B (en) * | 2024-01-23 | 2024-04-05 | 华东交通大学 | Stator built-in magneto-rheological brake |
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| CN103453053B (en) | 2016-04-20 |
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