阅读说明：本技术 一种防护型磁流变液制动器 (Protective magnetorheological fluid brake ) 是由 余龙 于 2021-09-14 设计创作，主要内容包括：本发明公开了一种防护型磁流变液制动器,属于制动器领域,一种防护型磁流变液制动器,包括制动器外壳和通过轴承转动连接在制动器外壳内的车轴,车轴上固定有制动盘,制动盘的圆周侧设有V型槽,制动器外壳的内壁固定有阻尼增大装置,阻尼增大装置为圆环型结构,阻尼增大装置活动套接在车轴的圆周侧,阻尼增大装置上等角度均分设有若干扇形板,扇形板通过滑块滑动连接在阻尼增大装置上,滑块与阻尼增大装置间夹接有复位弹簧,本发明的磁流变液始终保持流动状态,在制动盘旋转的过程中,能均匀吸附热量并分散,有效提升了制动盘的使用寿命,流动状态的磁流变液分散状态更均匀,安全性高。(The invention discloses a protective magnetorheological fluid brake, belonging to the brake field, comprising a brake shell and an axle which is rotationally connected in the brake shell through a bearing, wherein a brake disc is fixed on the axle, a V-shaped groove is arranged on the circumferential side of the brake disc, a damping increasing device is fixed on the inner wall of the brake shell, the damping increasing device is of a ring structure and is movably sleeved on the circumferential side of the axle, a plurality of sector plates are equally arranged on the damping increasing device at equal angles, the sector plates are slidably connected on the damping increasing device through a slide block, a return spring is clamped between the slide block and the damping increasing device, the magnetorheological fluid of the invention always keeps a flowing state, can uniformly adsorb and disperse heat in the rotating process of the brake disc, effectively prolongs the service life of the brake disc, and the magnetorheological fluid in the flowing state is more uniformly dispersed, the safety is high.)

1. The utility model provides a protection type magnetorheological suspensions stopper, includes brake shell (1) and through axle (2) of bearing (4) rotation connection in brake shell (1), its characterized in that: the brake disc (21) is fixed on the axle (2), the circumferential side of the brake disc (21) is provided with a V-shaped groove (22), the inner wall of the brake shell (1) is fixed with a damping increasing device (6), the damping increasing device (6) is of a circular ring structure, the damping increasing device (6) is movably sleeved on the circumferential side of the axle (2), a plurality of sector plates (61) are uniformly distributed at equal angles on the damping increasing device (6), the sector plates (61) are connected on the damping increasing device (6) through sliding blocks (62), a reset spring (64) is clamped between the sliding blocks (62) and the damping increasing device (6), an expansion bag (63) is clamped between one side of the sector plates (61) opposite to the damping increasing device (6), high-thermal expansion gas is filled in the expansion bag (63), the sections of the damping increasing device (6) and the sector plates (61) are matched with the V-shaped groove (22), the both sides of brake disc (21) all are equipped with a plurality of vortex groove (23), and are a plurality of the angle such as vortex groove (23) is equallyd divide and is arranged, be equipped with second reservoir (24) between the connected node of brake disc (21) and axletree (2), set up through intercommunicating pore (25) intercommunication between second reservoir (24) and V type groove (22), the inner wall of stopper shell (1) is equipped with first reservoir (13), first reservoir (13) and the output intercommunication setting of vortex groove (23) input and V type groove (22), all fill in first reservoir (13), first reservoir (13) and the first reservoir (13) and be equipped with magnetorheological suspensions, the circumference outside of stopper shell (1) is fixed with solenoid (11).

2. A protective magnetorheological fluid brake according to claim 1, wherein: the high thermal expansion gas is carbon dioxide gas.

3. A protective magnetorheological fluid brake according to claim 1, wherein: the return spring (64) has an elastic force for driving the sector plate (61) to be close to the axle (2), the inner circumferential side of the sector plate (61) is attached to the damping increasing device (6) in the free state of the return spring (64), and the sector plate (61) is sealed in the damping increasing device (6) through a sealing film (65).

4. A protective magnetorheological fluid brake according to claim 1, wherein: parallel gaps for the magnetorheological fluid to circulate are arranged between the damping increasing device (6) and the profile side of the sector plate (61) and the groove wall of the V-shaped groove (22).

5. A protective magnetorheological fluid brake according to claim 1, wherein: the brake comprises a brake shell (1), a brake disc (21), a brake lining, a heat conducting silica gel layer (7) and a heat dissipation shell (3), wherein the inner wall of one side, opposite to the brake disc (21), of the brake shell (1) is fixed with the heat conducting silica gel layer (7), a gap for magnetorheological fluid to flow is formed between the heat conducting silica gel layer (7) and the brake disc (21), two embedding grooves (12) are symmetrically arranged on the outer wall of the brake shell (1), the heat dissipation shell (3) is fixedly connected in the embedding grooves (12) in an adhesive mode, a plurality of heat conduction columns (71) are arranged on one side of the heat conducting silica gel layer (7), heat conduction holes (8) matched with the heat conduction columns (71) one by one are formed in the brake shell (1) and the heat dissipation shell (3), a plurality of heat dissipation fins (34) are arranged on the outer wall of the heat dissipation shell (3), a plurality of heat bars (31) are fixed in the heat dissipation shell (3), and correspond to the heat conduction columns (71) one by one, one end of the hot rod (31) is fixedly connected with the radiating fin (34) in an adhesive mode, and the other end of the hot rod (31) is fixedly connected with the heat conducting column (71) in an adhesive mode.

6. A protective magnetorheological fluid brake according to claim 5, wherein: the glued colloid structure adopts heat-conducting glue.

7. A protective magnetorheological fluid brake according to claim 5, wherein: the hot rod (31) is of a seamless copper tube structure, and liquid nitrogen (33) is filled in the hot rod (31).

8. A protective magnetorheological fluid brake according to claim 5, wherein: the heat dissipation bin (32) is of a vacuum bin structure.

9. A protective magnetorheological fluid brake according to claim 1, wherein: an oil seal (5) is arranged between the connection node of the axle (2) and the brake shell (1), and the oil seal (5) is arranged on two sides of the bearing (4).

10. A protective magnetorheological fluid brake according to claim 1, wherein: the damping increasing device (6) is of a high-heat-conductivity aluminum alloy structure.

Technical Field

The invention relates to the field of brakes, in particular to a protective magnetorheological fluid brake.

Background

The magnetic rheological liquid is an intelligent material, mainly composed of soft magnetic particles, base carrier liquid and surface additive, the soft magnetic particles coated with the surface additive are in suspension state in the base carrier liquid, the suspension liquid is in free flow state (liquid state) when no external magnetic field is applied, and under the action of the external magnetic field, the phenomenon of 'solidification' occurs, which is expressed as viscoplastic fluid (semi-solid state) with certain shearing force, and a plurality of novel devices can be developed by utilizing the unique rheological property. The magneto-rheological fluid braking system is a novel braking technology developed by taking magneto-rheological fluid as a working medium, and adopts a method of adjusting the intensity of an external magnetic field of the magneto-rheological fluid to change the shear yield stress of the magneto-rheological fluid so as to realize stepless control of braking torque.

At present, a plurality of magnetorheological fluid braking systems appear at home and abroad, but in the existing magnetorheological fluid braking system, working media of the magnetorheological fluid are sealed inside the device, so that heat generated by the magnetorheological fluid in the working process is very difficult to dissipate outwards, and the braking power is low; in addition, the existing magnetorheological fluid braking system can only control the braking force by electric power, cannot improve the braking capability in time under the condition of ultrahigh-speed operation, and is poor in safety, so that a protective magnetorheological fluid brake is provided to solve the problems.

Disclosure of Invention

1. Technical problem to be solved

Aiming at the problems in the prior art, the invention aims to provide a protective magnetorheological fluid brake which can be matched with a damping increasing device with a sector plate, a slide block, an expansion bag and a return spring through a brake disc with a vortex groove, a second liquid storage tank and a communication hole, wherein the brake disc rotates along with the advancing of an axle when in use, in the rotating process, magnetorheological fluid in a first liquid storage tank is led into the second liquid storage tank through the vortex groove, enters a V-shaped groove through the communication hole and then enters a first liquid storage tank by centrifugal force to achieve the purpose of reciprocating circulation, in the electrifying process of an electromagnetic coil, the magnetorheological fluid is influenced by magnetic force, is changed from a uniform dispersion state to be arranged along the direction of a magnetic field, so that the rotating resistance of the brake disc is increased to achieve the purpose of braking, compared with the traditional magnetorheological fluid brake, the magnetorheological fluid brake of the invention always keeps a flowing state, at the rotatory in-process of brake disc, can evenly adsorb heat and dispersion, effectively promoted the life of brake disc, the magnetorheological suspensions of the state of flowing is difficult for taking place the deposit layering simultaneously, and at the in-process that the circulation flows, the dispersed state is more even, and then makes the magnetorheological suspensions with the brake disc contact all have effective braking force, has effectively promoted safe in utilization.

2. Technical scheme

In order to solve the above problems, the present invention adopts the following technical solutions.

The utility model provides a protection type magnetorheological suspensions stopper, includes the stopper shell and rotates the axletree of connection in the stopper shell through the bearing, be fixed with the brake disc on the axletree, the circumference side of brake disc is equipped with V type groove, the inner wall of stopper shell is fixed with the damping increase device, the damping increase device is ring type structure, the circumference side at the axletree is cup jointed in the activity of damping increase device, the equidistance on the damping increase device is equallyd divide and is equipped with a plurality of sector plates, the sector plate passes through slider sliding connection on the damping increase device, the clamp is connected with reset spring between slider and damping increase device, the clamp is connected with the expansion bag between one side that sector plate is relative with the damping increase device, the inflation bag intussuseption is filled with high thermal expansion gas, the section of damping increase device and sector plate all with V type groove phase-match, the both sides of brake disc all are equipped with a plurality of vortex groove, the brake device is characterized in that the vortex line grooves are distributed at equal angles, a second liquid storage tank is arranged between a connecting node of the brake disc and the axle, the second liquid storage tank is communicated with the V-shaped groove through a communicating hole, a first liquid storage tank is arranged on the inner wall of the brake shell, the first liquid storage tank is communicated with the input end of the vortex line grooves and the output end of the V-shaped groove, magnetorheological fluid is filled in the first liquid storage tank and the first liquid storage tank, and electromagnetic coils are fixed on the outer side of the circumference of the brake shell. The invention uses the cooperation between the brake disc with the vortex groove, the second liquid storage groove and the communication hole and the damping increasing device with the sector plate, the slide block, the expansion bag and the return spring, when in use, the brake disc rotates along with the advancing of the axle, in the rotating process, the magnetorheological fluid in the first liquid storage groove is guided into the second liquid storage groove by the vortex groove, enters the V-shaped groove by the communication hole, and then enters the first liquid storage groove by the centrifugal force, so as to achieve the purpose of reciprocating circulation, in the electrifying process of the electromagnetic coil, the magnetorheological fluid is influenced by the magnetic force, is changed from a uniform dispersion state to be distributed along the magnetic field direction, so as to increase the rotating resistance of the brake disc, thereby achieving the purpose of braking, compared with the traditional magnetorheological fluid brake, the magnetorheological fluid always keeps a flowing state, can uniformly adsorb and disperse heat in the rotating process of the brake disc, thereby effectively prolonging the service life of the brake disc, meanwhile, the magnetorheological fluid in a flowing state is not easy to deposit and delaminate, and the dispersion state is more uniform in the circulating flowing process, so that the magnetorheological fluid in contact with the brake disc has effective braking force, and the use safety is effectively improved.

Further, the high thermal expansion gas is carbon dioxide gas.

Furthermore, the return spring has an elastic force which drives the sector plate to be close to the axle, the inner side of the circumference of the sector plate is attached to the damping increasing device when the return spring is in a free state, and the sector plate is sealed in the damping increasing device through a sealing film.

Furthermore, parallel gaps for the circulation of the magnetorheological fluid are arranged between the damping increasing device and the profile side of the sector plate and the groove wall of the V-shaped groove. When the normal magnetorheological fluid fails to brake or the braking effect is weakened, when the vehicle is braked at an ultrahigh speed, the magnetorheological fluid is gradually changed from a uniform dispersion state to the process of being distributed along the direction of a magnetic field, a brake disc rotating at a high speed generates heat through friction with the magnetorheological fluid, the heat is transferred to a damping increasing device of a high-heat-conducting aluminum alloy structure, so that an expansion bag is heated, carbon dioxide gas in the expansion bag is heated and expanded, the expansion bag overcomes the elasticity of a return spring to lift a sector plate, the width of a parallel gap between the return spring and the wall of a V-shaped groove is reduced, the purpose of increasing the pressure between the magnetorheological fluid and the brake disc and the damping force is achieved, the vehicle can be rapidly braked, and the braking efficiency is effectively improved.

Further, the inner wall of one side that the stopper shell is relative with the brake disc is fixed with one side heat conduction silica gel layer, be equipped with the clearance that supplies the magnetorheological suspensions circulation between heat conduction silica gel layer and brake disc, the outer wall symmetry of stopper shell is equipped with two gomphosis grooves, the gomphosis inslot is spliced and is fixed with the heat dissipation casing, heat conduction silica gel layer one side is equipped with a plurality of heat conduction posts, all be equipped with on stopper shell and the heat dissipation casing with heat conduction post one-to-one assorted heat conduction hole, the outer wall of heat dissipation casing is equipped with a plurality of radiating fin, be equipped with the heat dissipation storehouse in the heat dissipation casing, the heat dissipation storehouse internal fixation has a plurality of heat sticks, heat stick and heat conduction post one-to-one, the one end and the fixed splicing of radiating fin of heat stick, the other end and the fixed splicing of heat conduction post of heat stick.

Furthermore, the glued colloid structure adopts heat-conducting glue.

Further, the hot rod is of a seamless copper tube structure, and liquid nitrogen is filled in the hot rod. Through mutually supporting between the heat conduction silica gel layer that has the heat conduction post and the hot stick that has the liquid nitrogen, when producing the heat between magnetorheological suspensions and brake disc, at magnetorheological suspensions flow in-process, adsorbed by heat conduction silica gel layer to transmit to the one end of hot stick through the heat conduction post, the liquid nitrogen in the hot stick is heated the gasification, can adsorb a large amount of heats, can produce thermal quick adsorption heat in the twinkling of an eye at the brake disc, has effectively guaranteed the safety in utilization.

Furthermore, the heat dissipation bin is of a vacuum bin structure. The vacuum heat dissipation bin can effectively prevent external heat from entering the brake shell, and meanwhile, the heat transfer efficiency of the two ends of the heat rod is effectively guaranteed.

Furthermore, an oil seal is arranged between a connection node of the axle and the brake shell, and the oil seal is arranged on two sides of the bearing. Through the setting of oil blanket, effectively kept the connection leakproofness between brake shell and axletree.

Further, the damping increasing device is of a high-heat-conductivity aluminum alloy structure.

3. Advantageous effects

Compared with the prior art, the invention has the advantages that:

(1) the scheme is that a brake disc with a vortex groove, a second liquid storage tank and a communication hole is matched with a damping increasing device with a sector plate, a sliding block, an expansion bag and a return spring, when the brake disc rotates along with the advancing of an axle, in the rotating process, magnetorheological fluid in a first liquid storage tank is guided into a second liquid storage tank by the vortex groove and enters a V-shaped groove through the communication hole, and then enters a first liquid storage tank by centrifugal force, so that the aim of reciprocating circulation is fulfilled, in the electrifying process of an electromagnetic coil, the magnetorheological fluid is influenced by magnetic force and is changed from a uniform dispersion state to arrangement along the direction of a magnetic field, so that the rotating resistance of the brake disc is increased, the aim of braking is fulfilled, compared with the traditional magnetorheological fluid brake, the magnetorheological fluid brake always keeps a flowing state, and can uniformly adsorb heat and disperse in the rotating process of the brake disc, effectively promoted the life of brake disc, the magnetorheological suspensions of the state of flowing is difficult for taking place the deposit layering simultaneously, and at the in-process that the circulation flows, the dispersed state is more even, and then makes the magnetorheological suspensions with brake disc contact all have effective brake force, has effectively promoted safe in utilizationly.

(2) When the normal magnetorheological fluid fails to brake or the braking effect is weakened, when the vehicle is braked at an ultrahigh speed, the magnetorheological fluid is gradually changed from a uniform dispersion state to the process of being distributed along the direction of a magnetic field, a brake disc rotating at a high speed generates heat through friction with the magnetorheological fluid, the heat is transferred to a damping increasing device of a high-heat-conducting aluminum alloy structure, so that an expansion bag is heated, carbon dioxide gas in the expansion bag is heated and expanded, the expansion bag overcomes the elasticity of a return spring to lift a sector plate, the width of a parallel gap between the return spring and the wall of a V-shaped groove is reduced, the purpose of increasing the pressure between the magnetorheological fluid and the brake disc and the damping force is achieved, the vehicle can be rapidly braked, and the braking efficiency is effectively improved.

(3) Through mutually supporting between the heat conduction silica gel layer that has the heat conduction post and the hot stick that has the liquid nitrogen, when producing the heat between magnetorheological suspensions and brake disc, at magnetorheological suspensions flow in-process, adsorbed by heat conduction silica gel layer to transmit to the one end of hot stick through the heat conduction post, the liquid nitrogen in the hot stick is heated the gasification, can adsorb a large amount of heats, can produce thermal quick adsorption heat in the twinkling of an eye at the brake disc, has effectively guaranteed the safety in utilization.

(4) The vacuum heat dissipation bin can effectively prevent external heat from entering the brake shell, and meanwhile, the heat transfer efficiency of the two ends of the heat rod is effectively guaranteed.

(5) Through the setting of oil blanket, effectively kept the connection leakproofness between brake shell and axletree.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic longitudinal sectional view of the present invention;

FIG. 3 is an enlarged view of portion A of FIG. 2;

FIG. 4 is a schematic illustration of an explosive structure according to the present invention;

FIG. 5 is a schematic structural view of an axle and a brake disc proposed in the present invention;

fig. 6 is an exploded view of the damping increasing device proposed in the present invention;

fig. 7 is a schematic flow direction diagram of a magnetorheological fluid proposed in the present invention;

FIG. 8 is a cross-sectional structural schematic of the present invention;

FIG. 9 is a schematic view of the structure of the present invention when the sector plates are displaced;

FIG. 10 is a structural comparison diagram of the damping increasing device of the present invention when the damping is increased.

The reference numbers in the figures illustrate:

the brake comprises a brake shell 1, an electromagnetic coil 11, an embedding groove 12, a first liquid storage tank 13, an axle 2, a brake disc 21, a V-shaped groove 22, a vortex line groove 23, a second liquid storage tank 24, a communication hole 25, a heat dissipation shell 3, a hot rod 31, a heat dissipation bin 32, liquid nitrogen 33, a heat dissipation fin 34, a bearing 4, an oil seal 5, a damping increasing device 6, a sector plate 61, a sliding block 62, an expansion bag 63, a return spring 64, a sealing film 65, a heat conduction silica gel layer 7, a heat conduction column 71 and a heat conduction hole 8.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1:

referring to fig. 1-10, a protective magnetorheological fluid brake comprises a brake housing 1 and an axle 2 rotatably connected in the brake housing 1 through a bearing 4, a brake disc 21 is fixed on the axle 2, a V-shaped groove 22 is arranged on the circumferential side of the brake disc 21, a damping increasing device 6 is fixed on the inner wall of the brake housing 1, the damping increasing device 6 is of a circular ring structure, the damping increasing device 6 is movably sleeved on the circumferential side of the axle 2, a plurality of sector plates 61 are equally arranged on the damping increasing device 6 at equal angles, the sector plates 61 are slidably connected on the damping increasing device 6 through sliders 62, a return spring 64 is clamped between the sliders 62 and the damping increasing device 6, an expansion bag 63 is clamped between the opposite sides of the sector plates 61 and the damping increasing device 6, high thermal expansion gas is filled in the expansion bag 63, the cross sections of the damping increasing device 6 and the sector plates 61 are matched with the V-shaped groove 22, both sides of brake disc 21 all are equipped with a plurality of vortex groove 23, a plurality of vortex groove 23 equal angle are equallyd divide and are arranged, be equipped with second reservoir 24 between the connected node of brake disc 21 and axletree 2, set up through intercommunicating pore 25 intercommunication between second reservoir 24 and V type groove 22, the inner wall of brake shell 1 is equipped with first reservoir 13, first reservoir 13 sets up with the output intercommunication of vortex groove 23 input and V type groove 22, first reservoir 13, all fill in the first reservoir 13 and be equipped with magnetorheological suspensions, the circumference outside of brake shell 1 is fixed with solenoid 11.

The invention uses the mutual cooperation between the brake disc 21 with the vortex groove 23, the second liquid storage groove 24 and the communicating hole 25 and the damping increasing device 6 with the sector plate 61, the slide block 62, the expansion bag 63 and the return spring 64, when in use, the brake disc 21 rotates along with the advance of the axle 2, in the rotating process, the magnetorheological fluid passing through the first liquid storage groove 13 is led into the second liquid storage groove 24 by the vortex groove 23, enters the V-shaped groove 22 by the communicating hole 25, and then enters the first liquid storage groove 13 by the centrifugal force, thereby achieving the purpose of reciprocating circulation, in the electrifying process of the electromagnetic coil 11, the magnetorheological fluid is influenced by the magnetic force, the uniformly dispersed state is changed into the arrangement along the magnetic field direction, further the rotating resistance of the brake disc 21 is increased, thereby achieving the purpose of braking, compared with the traditional magnetorheological fluid brake, the magnetorheological fluid of the invention always keeps the flowing state, in the rotating process of the brake disc 21, the magnetorheological fluid in the flowing state is not easy to deposit and delaminate, the dispersing state is more uniform in the circulating flowing process, and then the magnetorheological fluid in contact with the brake disc 21 has effective braking force, and the use safety is effectively improved.

Referring to fig. 1 to 10, the high thermal expansion gas is carbon dioxide, the return spring 64 has an elastic force that drives the sector plate 61 to approach the axle 2, the inner side of the circumference of the sector plate 61 is attached to the damping increasing device 6 in the free state of the return spring 64, the sector plate 61 is sealed in the damping increasing device 6 through a sealing film 65, a parallel gap for flowing the magnetorheological fluid is provided between the damping increasing device 6, the section edge of the sector plate 61 and the wall of the V-shaped groove 22, and the damping increasing device 6 is of a high thermal conductivity aluminum alloy structure.

When the normal magnetorheological fluid fails to brake or the braking effect is weakened, namely when the vehicle is braked at an ultrahigh speed, the magnetorheological fluid is gradually changed from a uniformly dispersed state to be distributed along the direction of a magnetic field, the brake disc 21 rotating at a high speed and the magnetorheological fluid generate heat through friction, the heat is transferred to the damping increasing device 6 of the high-heat-conduction aluminum alloy structure, the expansion bag 63 is heated, carbon dioxide gas in the expansion bag 63 is heated and expanded, the expansion bag 63 overcomes the elastic force of the return spring 64 to lift the sector plate 61, the width of a parallel gap between the return spring 64 and the wall of the V-shaped groove 22 is reduced, the purposes of increasing the pressure between the magnetorheological fluid and the brake disc 21 and increasing the damping force are achieved, the vehicle can be rapidly braked, and the braking efficiency is effectively improved.

Referring to fig. 2-4, a side heat-conducting silica gel layer 7 is fixed on an inner wall of a brake housing 1 opposite to a brake disc 21, a gap for magnetorheological fluid to flow is formed between the heat-conducting silica gel layer 7 and the brake disc 21, two embedding grooves 12 are symmetrically formed on an outer wall of the brake housing 1, a heat dissipation housing 3 is fixed in the embedding grooves 12 in an adhesive manner, a plurality of heat conduction columns 71 are arranged on one side of the heat-conducting silica gel layer 7, heat conduction holes 8 matched with the heat conduction columns 71 one by one are formed in the brake housing 1 and the heat dissipation housing 3, a plurality of heat dissipation fins 34 are arranged on an outer wall of the heat dissipation housing 3, a heat dissipation chamber 32 is arranged in the heat dissipation housing 3, a plurality of heat bars 31 are fixed in the heat dissipation chamber 32, the heat bars 31 correspond to the heat conduction columns 71 one by one, one end of each heat bar 31 is fixedly bonded to the heat dissipation fins 34, the other end of each heat bar 31 is fixedly bonded to the heat conduction column 71, and the bonded colloid structure adopts heat conduction adhesive, the hot rod 31 is a seamless copper tube structure, and liquid nitrogen 33 is filled in the hot rod 31. Through the heat conduction silica gel layer 7 that has heat conduction post 71 and the mutual cooperation between the hot stick 31 that has liquid nitrogen 33, when producing the heat between magnetorheological suspensions and brake disc 21, at the magnetorheological suspensions flow in-process, adsorb by heat conduction silica gel layer 7 to transmit to the one end of hot stick 31 through heat conduction post 71, liquid nitrogen 33 in the hot stick 31 is heated the gasification, can adsorb a large amount of heats, can produce the thermal quick adsorption heat in the twinkling of an eye at brake disc 21, effectively guaranteed the safety in utilization.

Referring to fig. 3, the heat dissipation chamber 32 is a vacuum chamber structure. The vacuum heat dissipation chamber 32 can effectively prevent external heat from entering the brake housing 1, and simultaneously, the heat transfer efficiency of the two ends of the heat bar 31 is effectively ensured.

Referring to fig. 3, an oil seal 5 is provided between the connection node of the axle 2 and the brake housing 1, and the oil seal 5 is provided on both sides of the bearing 4. The connection sealing performance between the brake housing 1 and the axle 2 is effectively maintained by the arrangement of the oil seal 5.

The foregoing is only a preferred embodiment of the present invention; the scope of the invention is not limited thereto. Any person skilled in the art should be able to cover the technical scope of the present invention by equivalent or modified solutions and modifications within the technical scope of the present invention.