CN104508313B - magnetic fluid buoyancy brake drum device - Google Patents

magnetic fluid buoyancy brake drum device Download PDF

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Publication number
CN104508313B
CN104508313B CN201380032674.3A CN201380032674A CN104508313B CN 104508313 B CN104508313 B CN 104508313B CN 201380032674 A CN201380032674 A CN 201380032674A CN 104508313 B CN104508313 B CN 104508313B
Authority
CN
China
Prior art keywords
brake
magnetic fluid
buoyancy
brake pad
magnetic
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201380032674.3A
Other languages
Chinese (zh)
Other versions
CN104508313A (en
Inventor
张建勋
候晓翠
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
QINGDAO R & D INSTITUTE, XI'AN JIAOTONG UNIVERSITY
Original Assignee
QINGDAO R & D INSTITUTE XI'AN JIAOTONG UNIVERSITY
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to CN201310028141X priority Critical
Priority to CN 201310028141 priority patent/CN103115090A/en
Application filed by QINGDAO R & D INSTITUTE XI'AN JIAOTONG UNIVERSITY filed Critical QINGDAO R & D INSTITUTE XI'AN JIAOTONG UNIVERSITY
Priority to PCT/CN2013/091260 priority patent/WO2014106452A1/en
Priority to CN201380032674.3A priority patent/CN104508313B/en
Publication of CN104508313A publication Critical patent/CN104508313A/en
Application granted granted Critical
Publication of CN104508313B publication Critical patent/CN104508313B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D49/00Brakes with a braking member co-operating with the periphery of a drum, wheel-rim, or the like
    • F16D49/16Brakes with two brake-blocks
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D57/00Liquid-resistance brakes; Brakes using the internal friction of fluids or fluid-like media, e.g. powders
    • F16D57/002Liquid-resistance brakes; Brakes using the internal friction of fluids or fluid-like media, e.g. powders comprising a medium with electrically or magnetically controlled internal friction, e.g. electrorheological fluid, magnetic powder
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00Parts or details
    • F16D65/78Features relating to cooling
    • F16D65/80Features relating to cooling for externally-engaging brakes
    • F16D65/813Features relating to cooling for externally-engaging brakes with closed cooling system
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00Parts or details
    • F16D65/78Features relating to cooling
    • F16D65/84Features relating to cooling for disc brakes
    • F16D65/853Features relating to cooling for disc brakes with closed cooling system

Abstract

Disclosed is a magnetic fluid buoyancy brake drum device, comprising a shell (1), a brake disc (2), a rotating shaft (3), brake ratchets (4), a magnetic fluid (5), an electromagnetic coil (6) and a controller (7). A magnetic field of the electromagnetic coil (6) is controlled by means of the controller (7), the specific gravity of the magnetic fluid (5) is controlled by means of the magnetic field, the buoyancy of the brake ratchet (4) experienced in the magnetic fluid (5) is controlled by means of the specific gravity of the magnetic fluid (5), a brake block (9) of the brake ratchet (4) and the brake disc (2) are driven to conduct friction braking by means of the buoyancy of the brake ratchet (4) experienced in the magnetic fluid (5), and the temperatures of the brake block (9) and the brake disc (2) are reduced by means of the magnetic fluid (5), so as to prolong the service life of the brake block (9) and the brake disc (2), and reduce brake locking failures.

Description

Magnetic fluid buoyancy brake drum device
Technical field
The present invention relates to a kind of brake gear, particularly a kind of magnetic fluid buoyancy brake drum device.
Background technology
Existing motor vehicles and the brake gear of some equipment, during brake, using oil gear driving brake piece and system , come to brake, the impulsive force of brake is larger for Moving plate frictional resistance, and the temperature that brake block is rubbed with brake disc is higher, and brake block is easy Abrasion, have impact on the service life of brake block and brake disc.
Content of the invention
The purpose of the present invention is to overcome the deficiencies in the prior art, provides a kind of motor vehicles and the magnetic fluid of equipment use to float Power brake drum device, the brake block of the buoyancy-driven brake pad being subject in magnetic fluid using brake pad and brake disc friction are stopped Car, reduces the temperature of brake block and brake disc using magnetic fluid.
The technical solution adopted in the present invention is: magnetic fluid buoyancy brake drum device includes shell, brake disc, rotation Axle, brake pad, magnetic fluid, solenoid and controller;Brake disc is fixedly connected with the rotating shaft, the axis of rotary shaft and braking The axis of disk is identical, and rotary shaft is moved with shell and is connected, and brake disc is sealed in the braking type intracavity of shell, and magnetic fluid is located at system Ejector half intracavity;Brake pad is located at the lower section of brake disc, and the brake block of brake pad is located at the opposite of brake disc braking surface, brake pad with Housing hinge;On shell, through magnetic fluid, controller is provided with control line and electromagnetism to the magnetic line of force of solenoid to solenoid Coil connects, and the proportion of brake pad is more than the proportion of magnetic fluid, makes brake pad swing sinking under gravity, makes brake pad Brake block and brake disc leave gap.Magnetic fluid is full of braking die cavity, reduces brake block and brake disc friction using magnetic fluid Temperature;Shell is provided with fin, and heat is distributed by shell again.
During use, shell is fixedly connected with the frame of motor vehicles or equipment, and rotary shaft is fixed with the rotating shaft needing braking Connect;During braking, the power supply of solenoid connected by controller, and solenoid produces magnetic field, and magnetic field is by the magnetic current of braking type intracavity Body magnetizes, and the proportion of magnetic fluid is more than the proportion of brake pad, and brake pad is swung up in the presence of magnetic fluid buoyancy, makes brake The brake block of pawl and brake disc friction, hinder disc rotation using brake block with brake disc frictional force, using controller control The buoyancy that brake pad is subject in magnetic fluid brakes;When brake releases, controller cuts off the power supply of solenoid, solenoid Magnetic field disappears, and magnetic fluid returns to unmagnetized state, the buoyancy that the gravity of brake pad is subject in magnetic fluid more than brake pad, Brake pad is swung away from brake disc, and brake releases.
The invention has the beneficial effects as follows: magnetic fluid buoyancy brake drum device includes shell, brake disc, rotary shaft, brake Pawl, magnetic fluid, solenoid and controller;Control the magnetic field of solenoid using controller, control magnetic fluid using magnetic field Proportion, the buoyancy being subject in magnetic fluid using the specific gravity control brake pad of magnetic fluid, be subject in magnetic fluid using brake pad Buoyancy carrys out brake block and the brake disc friction brake of driving brake pawl, reduces the temperature of brake block and brake disc using magnetic fluid Degree, improves the service life of brake block and brake disc, reduces the generation of brake locking fault.
Brief description
Fig. 1 is the structural representation of magnetic fluid buoyancy brake drum device;
Fig. 2 is the left view of Fig. 1.
Specific embodiment
Below in conjunction with the accompanying drawings the present invention is further detailed:
The left view of Fig. 1, magnetic current shown in the structural representation of the magnetic fluid buoyancy brake drum device shown in Fig. 1 and Fig. 2 Body buoyancy brake drum device includes shell 1, brake disc 2, rotary shaft 3, brake pad 4, magnetic fluid 5, solenoid 6 and controls Device 7;Brake disc 2 is fixedly connected with rotary shaft 3, and the axis of rotary shaft 3 is identical with the axis of brake disc 2, rotary shaft 3 and shell 1 Move and be connected, brake disc 2 is sealed in the braking die cavity 8 of shell 1, magnetic fluid 5 is in braking die cavity 8;Brake pad 4 is located at The lower section of brake disc 2, the brake block 9 of brake pad 4 is located at the opposite of brake disc 2 braking surface 10, and brake pad 4 is hinged with shell 1;Electricity On shell 1, through magnetic fluid 5, controller 7 is provided with control line and solenoid 6 to the magnetic line of force of solenoid 6 to magnetic coil 6 Connect, the proportion of brake pad 4 is more than the proportion of magnetic fluid 5.In order to reduce the interference to solenoid 6 magnetic field for the ferromagnetic material, outward Shell 1, brake disc 2 and brake pad 4 are that nonferromagnetic material is constituted, and shell 1 and brake disc 2 are made up of aluminium alloy, brake pad 4 by Aluminium alloy is constituted with ceramic abrasive.
The operation principle of magnetic fluid buoyancy brake drum device is: during use, shell 1 is solid with the frame of motor vehicles or equipment Fixed connection, rotary shaft 3 is fixedly connected with the rotating shaft needing braking;During braking, controller 7 connects the power supply of solenoid 6, electromagnetism Coil 6 produces magnetic field, and magnetic field magnetizes braking the magnetic fluid 5 in die cavity 8, controls the magnetic field of solenoid 6 strong using controller 7 Degree is continuously increased, and so that the proportion of magnetic fluid 5 is continuously increased, and the proportion of magnetic fluid 5 is more than the proportion of brake pad 4, and brake pad 4 is in magnetic It is swung up in the presence of fluid 5 buoyancy, so that the brake block 9 of brake pad 4 and brake disc 2 is rubbed, using brake block 9 and brake disc 2 frictional force hinder brake disc 2 to rotate, and control the buoyancy that brake pad 4 is subject in magnetic fluid 5 to brake using controller 7;Brake solution Except when, controller 7 cuts off the power supply of solenoid 6, and the magnetic field of solenoid 6 disappears, and magnetic fluid 5 returns to unmagnetized shape State, the buoyancy that the gravity of brake pad 4 is subject in magnetic fluid 5 more than brake pad 4, brake pad 5 is swung away from brake disc 2, brake Release;When controller (7) controls the brake force strengthening brake, controller (7), controller (7) controls the magnetic field of solenoid (6) Intensity is continuously increased, and so that the proportion of magnetic fluid (5) is continuously increased, and so that brake pad (4) is constantly increased in the buoyancy that magnetic fluid (5) is subject to Plus, so that brake block (9) and the frictional force of brake disc (2) is continuously increased;When controller (7) controls the brake force reducing brake, control Device (7) processed controls the magnetic field intensity of solenoid (6) constantly to reduce, and so that the proportion of magnetic fluid (5) is constantly reduced, makes brake pad (4) constantly reduce in the buoyancy that magnetic fluid (5) is subject to, so that brake block (9) and the frictional force of brake disc (2) is constantly reduced.
Voltage for the output using controller 7 is implemented to control to the frictional force of brake pad 4 and brake disc 2, electromagnetic wire The voltage that the magnetic field intensity of circle 6 inputs solenoid 6 to controller 7 is directly proportional, the proportion of magnetic fluid 5 and electricity in braking die cavity 8 The magnetic field intensity of magnetic coil 6 is directly proportional, and the buoyancy that brake pad 4 is subject in magnetic fluid 5 is directly proportional to the proportion of magnetic fluid 5, stops The buoyancy that the brake block 9 of car pawl 4 is subject to brake pad 4 to brake disc 2 frictional force in magnetic fluid 5 is directly proportional.Brake pad 4 is in magnetic The buoyancy being subject in fluid 5 inputs the rising of solenoid 6 voltage with controller 7 and increases, the brake block 9 of brake pad 4 and system Moving plate 2 frictional force is subject to the raising of buoyancy to increase with brake pad 4 in magnetic fluid 5;Brake pad 4 is subject in magnetic fluid 5 Buoyancy inputs the reduction of solenoid 6 voltage with controller 7 and reduces, the brake block 9 of brake pad 4 and brake disc 2 frictional force with Brake pad 4 is subject to the reduction of buoyancy to reduce in magnetic fluid 5.
Electric current for the output using controller 7 is implemented to control to the frictional force of brake pad 4 and brake disc 2, electromagnetic wire Circle 6 be provided with multiple, each solenoid 6 around to identical, the direction producing magnetic field is identical, and each solenoid 6 is parallel with one another Connect, each solenoid 6 is provided with switch, and each switch is connected with controller, the connection of each switch or disjunction are controlled Device 7 controls;The electric current that the magnetic field intensity of solenoid 6 inputs solenoid 6 to controller 7 is directly proportional, magnetic current in braking die cavity 8 The proportion of body 5 is directly proportional to the magnetic field intensity of solenoid 6, the buoyancy that brake pad 4 is subject in magnetic fluid 5 and magnetic fluid 5 Proportion is directly proportional, and the buoyancy that the brake block 9 of brake pad 4 is subject to brake pad 4 with brake disc 2 frictional force in magnetic fluid 5 just becomes Than.The buoyancy that brake pad 4 is subject in magnetic fluid 5 inputs the increase of solenoid 6 electric current with controller 7 and increases, brake pad 4 Brake block 9 and brake disc 2 frictional force be subject to the increase of buoyancy to increase in magnetic fluid 5 with brake pad 4;Brake pad 4 is in magnetic The buoyancy being subject in fluid 5 inputs the minimizing of solenoid 6 electric current with controller 7 and reduces, the brake block 9 of brake pad 4 and system Moving plate 2 frictional force is subject to the minimizing of buoyancy to reduce with brake pad 4 in magnetic fluid 5.
The braking state of brake pad 4 is: magnetic fluid 5 is magnetized, and the proportion of magnetic fluid 5 is more than the proportion of brake pad 4, brake Pawl 4 is subject to the buoyancy swing of magnetic fluid 5 to rise, and the brake block 9 of brake pad 4 is contacted with the braking surface 10 of brake disc 2.Brake pad 4 Non- braking state be: magnetic fluid 5 is not magnetized, and the proportion of magnetic fluid 5 is less than the proportion of brake pad 4, and brake pad 4 is subject to itself The effect of gravity and decline in regulating bolt 14, the brake block of brake pad 49 leaves gap with the braking surface 10 of brake disc 2.
In order to improve the radiating efficiency of brake, magnetic fluid 5 is full of braking die cavity 8, using magnetic fluid 5 reduce brake block 9 with Brake disc 2 friction temperature;Shell 1 is provided with fin 11, and the heat that brake block 9 is produced with brake disc 2 friction transmits through magnetic fluid 5 To shell 1, heat is distributed by shell 1 again.
In order to prevent the leakage of magnetic fluid 5, between the bearing block 12 of rotary shaft 3 and shell 1, it is provided with the first sealing ring 13, use Reveal in rotary shaft 3 in preventing magnetic fluid 5;Shell 1 is provided with the second sealing ring 16 and is tightly connected with regulating bolt 14, prevents magnetic current Body 5 is revealed in regulating bolt 14.
In order to adjust the brake block 9 of brake pad 4 with the distance of brake disc 2 it is characterised in that: described shell 1 is provided with tune Section bolt 14, regulating bolt 14 is connected with shell 1 by screw thread, and the upper end 15 of regulating bolt 14 is contacted with brake pad 4, meanwhile, The brake block 9 of brake pad 4 and the braking surface 10 of brake disc 2 is made to leave gap.
In order that increasing the contact surface of brake block 9 and brake disc 2, brake pad 4 brake block 9 be shaped as circular arc, circular arc The radius of shape is identical with the radius of brake disc 2 braking surface 10.
In order to implement to brake, rotary shaft is controlled to rotate, shell 1 is fixed with hinge 17, and the upper end 18 of brake pad 4 is provided with hinge sleeve 19, hinge sleeve 19 is hinged with hinge 17, and the lower end 20 of brake pad 4 is located at the lower section of hinge 17 and brake disc 2;During brake, brake Pawl 4 and brake disc 2 friction brake.
In order to implement the symmetrical brake of brake disc 2, brake pad 4 has two, a brake pad 4 located at the left side of brake disc 2, Located at the right of brake disc 2, the left side of shell 1 and the right are respectively fixed with hinge 17, left side brake pad to another brake pad 4 4 hinge sleeve 19 is hinged with the hinge 17 on the left side, and the hinge sleeve 19 of the brake pad 4 on the right is hinged with the hinge 17 on the right;During brake, left The brake pad 4 on side is swung counterclockwise and is rubbed with brake disc 2, and the brake pad 4 on the right swings and braking in the direction of the clock Disk rubs.

Claims (10)

1. magnetic fluid buoyancy brake drum device, includes shell (1), brake disc (2), rotary shaft (3), brake pad (4), magnetic fluid (5), solenoid (6) and controller (7);Brake disc (2) is fixedly connected with rotary shaft (3), the axis of rotary shaft (3) and system The axis of Moving plate (2) is identical, and rotary shaft (3) is moved with shell (1) and is connected, and brake disc (2) is sealed in the braking type of shell (1) In chamber (8), magnetic fluid (5) is in braking die cavity (8);Brake pad (4) is located at the lower section of brake disc (2), the stopping of brake pad (4) Car piece (9) is located at the opposite of brake disc (2) braking surface (10), and brake pad (4) is hinged with shell (1);Solenoid (6) is located at outer On shell (1), through magnetic fluid (5), controller (7) is provided with control line with solenoid (6) even to the magnetic line of force of solenoid (6) Connect;
The operation principle of magnetic fluid buoyancy brake drum device is: during use, the frame of shell (1) and motor vehicles or equipment is fixed Connect, rotary shaft (3) is fixedly connected with the rotating shaft needing braking;During braking, the power supply of solenoid (6) connected by controller (7), Solenoid (6) produces magnetic field, and magnetic fluid (5) magnetization in die cavity (8) will be braked in magnetic field, so that the proportion of magnetic fluid (5) is more than The proportion of brake pad (4), brake pad (4) is swung up in the presence of magnetic fluid (5) buoyancy, makes the brake block of brake pad (4) (9) rub with brake disc (2), hinder brake disc (2) to rotate using brake block (9) and brake disc (2) frictional force, using controller (7) buoyancy that brake pad (4) is subject in magnetic fluid (5) is controlled to brake;When brake releases, controller (7) cuts off solenoid (6) power supply, the magnetic field of solenoid (6) disappears, and magnetic fluid (5) returns to unmagnetized state, and the gravity of brake pad (4) is big The buoyancy being subject in magnetic fluid (5) in brake pad (4), brake pad (5) is swung away from brake disc (2), and brake releases.
2. magnetic fluid buoyancy brake drum device according to claim 1 it is characterised in that: described controller (7) controls When strengthening the brake force braked, controller (7) controls the magnetic field intensity of solenoid (6) to be continuously increased, and makes the ratio of magnetic fluid (5) It is continuously increased again, so that brake pad (4) is continuously increased in the buoyancy that magnetic fluid (5) is subject to, make brake block (9) and brake disc (2) Frictional force is continuously increased.
3. magnetic fluid buoyancy brake drum device according to claim 1 it is characterised in that: described controller (7) controls When reducing the brake force braked, controller (7) controls the magnetic field intensity of solenoid (6) constantly to reduce, and makes the ratio of magnetic fluid (5) Weight constantly reduces, and so that brake pad (4) is constantly reduced in the buoyancy that magnetic fluid (5) is subject to, and makes brake block (9) and brake disc (2) Frictional force constantly reduces.
4. magnetic fluid buoyancy brake drum device according to claim 1 it is characterised in that: described solenoid (6) The voltage that magnetic field intensity and controller (7) input solenoid (6) is directly proportional, the proportion of the interior magnetic fluid (5) of braking die cavity (8) with The magnetic field intensity of solenoid (6) is directly proportional, the proportion of the buoyancy that brake pad (4) is subject in magnetic fluid (5) and magnetic fluid (5) It is directly proportional, it is floating that the brake block (9) of brake pad (4) and brake disc (2) frictional force and brake pad (4) are subject in magnetic fluid (5) Power is directly proportional.
5. magnetic fluid buoyancy brake drum device according to claim 2 it is characterised in that: described brake pad (4) is in magnetic The buoyancy being subject in fluid (5) inputs the rising of solenoid (6) voltage with controller (7) and increases, the brake of brake pad (4) Piece (9) is subject to the raising of buoyancy to increase with brake disc (2) frictional force with brake pad (4) in magnetic fluid (5);Brake pad (4) The buoyancy being subject in magnetic fluid (5) inputs the reduction of solenoid (6) voltage with controller (7) and reduces, brake pad (4) Brake block (9) is subject to the reduction of buoyancy to reduce with brake disc (2) frictional force with brake pad (4) in magnetic fluid (5).
6. magnetic fluid buoyancy brake drum device according to claim 1 it is characterised in that: described solenoid (6) sets Have multiple, the electric current that the magnetic field intensity of solenoid (6) inputs solenoid (6) to controller (7) is directly proportional, brake die cavity (8) proportion of interior magnetic fluid (5) is directly proportional to the magnetic field intensity of solenoid (6), and brake pad (4) is subject in magnetic fluid (5) Buoyancy be directly proportional to the proportion of magnetic fluid (5), the brake block (9) of brake pad (4) and brake disc (2) frictional force and brake pad (4) buoyancy being subject in magnetic fluid (5) is directly proportional.
7. magnetic fluid buoyancy brake drum device according to claim 1 it is characterised in that: described brake pad (4) is in magnetic The buoyancy being subject in fluid (5) inputs the increase of solenoid (6) electric current with controller (7) and increases, the brake of brake pad (4) Piece (9) is subject to the increase of buoyancy to increase with brake disc (2) frictional force with brake pad (4) in magnetic fluid (5);Brake pad (4) The buoyancy being subject in magnetic fluid (5) inputs the minimizing of solenoid (6) electric current with controller (7) and reduces, brake pad (4) Brake block (9) is subject to the minimizing of buoyancy to reduce with brake disc (2) frictional force with brake pad (4) in magnetic fluid (5).
8. magnetic fluid buoyancy brake drum device according to claim 1 it is characterised in that: the stopping of described brake pad (4) Car state is: magnetic fluid (5) is magnetized, and the proportion of magnetic fluid (5) is more than the proportion of brake pad (4), and brake pad (4) is subject to magnetic current The buoyancy of body (5) swings and rises, and the brake block (9) of brake pad (4) is contacted with the braking surface (10) of brake disc (2).
9. magnetic fluid buoyancy brake drum device according to claim 1 it is characterised in that: described brake pad (4) non- Braking state is: magnetic fluid (5) is not magnetized, and the proportion of magnetic fluid (5) is less than the proportion of brake pad (4), and brake pad (4) is subject to The effect of self gravitation and decline in regulating bolt (14), the brake block (9) of brake pad (4) and the braking surface of brake disc (2) (10) notice gap.
10. magnetic fluid buoyancy brake drum device according to claim 1 it is characterised in that: described brake pad (4) is provided with Two, during brake, the brake pad (4) on the left side swings and brake disc (2) friction counterclockwise, and the brake pad (4) on the right is pressed Swing and brake disc friction clockwise.
CN201380032674.3A 2013-01-03 2013-12-31 magnetic fluid buoyancy brake drum device Expired - Fee Related CN104508313B (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CN201310028141X 2013-01-03
CN 201310028141 CN103115090A (en) 2013-01-03 2013-01-03 Magnetic fluid buoyancy brake drum device
PCT/CN2013/091260 WO2014106452A1 (en) 2013-01-03 2013-12-31 Magnetic fluid buoyancy brake drum device
CN201380032674.3A CN104508313B (en) 2013-01-03 2013-12-31 magnetic fluid buoyancy brake drum device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201380032674.3A CN104508313B (en) 2013-01-03 2013-12-31 magnetic fluid buoyancy brake drum device

Publications (2)

Publication Number Publication Date
CN104508313A CN104508313A (en) 2015-04-08
CN104508313B true CN104508313B (en) 2017-02-01

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CN 201310028141 Pending CN103115090A (en) 2013-01-03 2013-01-03 Magnetic fluid buoyancy brake drum device
CN201380032674.3A Expired - Fee Related CN104508313B (en) 2013-01-03 2013-12-31 magnetic fluid buoyancy brake drum device

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Application Number Title Priority Date Filing Date
CN 201310028141 Pending CN103115090A (en) 2013-01-03 2013-01-03 Magnetic fluid buoyancy brake drum device

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CN (2) CN103115090A (en)
WO (1) WO2014106452A1 (en)

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Publication number Priority date Publication date Assignee Title
CN103089856B (en) * 2013-01-03 2015-10-21 郑运婷 Brake drum
CN103115090A (en) * 2013-01-03 2013-05-22 郑运婷 Magnetic fluid buoyancy brake drum device
CN103511545B (en) * 2013-10-11 2015-07-01 郑运婷 Magnetofluid suspension moving platform

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CN203023340U (en) * 2013-01-03 2013-06-26 郑运婷 Magnetic fluid buoyancy brake drum
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WO1998000649A1 (en) * 1996-07-02 1998-01-08 Lord Corporation Magnetorheological fluid brake
CN1945047A (en) * 2006-10-24 2007-04-11 中国石油天然气集团公司 Auxiliary braking device for magnetic rheological body petroleum drilling rig
CN102401046A (en) * 2011-07-15 2012-04-04 东北林业大学 Impeller type magneto rheological fluid brake for vehicle
CN102817939A (en) * 2012-08-11 2012-12-12 林智勇 Magnetofluid disc brake

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WO2014106452A1 (en) 2014-07-10
CN104508313A (en) 2015-04-08
CN103115090A (en) 2013-05-22

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