CN102155508A - Permanent magnet braking and frictional braking combined brake and braking method - Google Patents
Permanent magnet braking and frictional braking combined brake and braking method Download PDFInfo
- Publication number
- CN102155508A CN102155508A CN 201110113498 CN201110113498A CN102155508A CN 102155508 A CN102155508 A CN 102155508A CN 201110113498 CN201110113498 CN 201110113498 CN 201110113498 A CN201110113498 A CN 201110113498A CN 102155508 A CN102155508 A CN 102155508A
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- braking
- permanent magnet
- concentrating flux
- brake
- brake disc
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Abstract
The invention discloses a permanent magnet braking and frictional braking combined brake for automobile braking or deceleration and a braking method. The brake comprises a permanent magnet braking device and a frictional braking device, wherein the permanent magnet braking device comprises a magnetic conductive plate, a magnetic conductive ring, a magnetic conductive sleeve and a permanent magnet and is symmetrically distributed at both sides of a brake disk; the magnetic conductive sleeve is internally provided with the permanent magnet which reciprocates along the axial direction of the magnetic conductive sleeve; one end of the permanent magnet close to the braking disk is sheathed with the magnetic conductive ring in a clearance way, and the magnetic conductive ring is fixedly connected with the magnetic conductive sleeve; the outer side of the magnetic conductive ring is provided with the magnetic conductive plate which is fixedly connected with the permanent magnet; during emergency braking, the permanent magnet braking device and the frictional braking device jointly take effect; during non-emergency braking or long slope braking, if a vehicle speed is higher than 30km/h, only the permanent magnet braking device brakes; if the vehicle speed is lower than 30km/h, only the frictional braking device brakes; and the permanent magnet braking and frictional braking combined brake has good heat-fading resistance, reduces the frictional braking abrasion, prolongs the service life of the brake and reduces the noise of the whole brake.
Description
Technical field
The present invention relates to a kind of break that is used for automobile brake or deceleration, particularly permanent magnetism braking and combined integrated break and the braking method thereof of friction catch.
Background technique
The orthodox car break is divided into disk type braker and drum brake two big classes.Disk type braker and drum brake all are friction catches, be to reduce the speed of a motor vehicle by the friction between brake pad and brake disc or the brake drum also finally to stop, in Motor Vehicle Braking Procedure, brake pad is wearing and tearing constantly, temperature constantly raises, directly influence the performance of break, a large amount of wearing and tearing of brake pad simultaneously also can be distributed dust, befouling environment in atmosphere.In braking, friction also can produce a large amount of noises between brake pad and brake disc or the brake drum.Especially need to continue under the situation of braking or frequent braking in lower long slope or urban district etc., the wearing and tearing of brake pad are more violent, and it is very high that temperature will be raised in very short time, thereby influence the performance of break, and serious threat is to pedestrian and the safety of self.
Summary of the invention
In view of problems of the prior art, the invention provides a kind of improved break, this break has made up permanent magnetism braking and friction catch, can alleviate the wearing and tearing of brake pad, the permanent magnetism braking is contactless braking, can not produce noise, thereby reduce overall noise, and heat produces also less relatively.The present invention also provides the braking method of this break simultaneously, can realize optimum braking effect according to the actual travel state of automobile.
The technological scheme that the combined break of permanent magnetism braking of the present invention and friction catch adopts is: be made of the fixedly connected fixing frame that links to each other with brake disc of permanent magnetism braking device permanent magnetism braking device and friction stopping device; The permanent magnetism braking device is made of concentrating flux plate, magnetic guiding loop, concentrating flux sleeve and permanent magnet, and is symmetrically distributed in the brake disc both sides; Concentrating flux sleeve is through in the fixing frame respective aperture, be provided with the permanent magnet that axially moves back and forth along it in the concentrating flux sleeve, permanent magnet is being with magnetic guiding loop near gap on brake disc one end, and the fixedly connected concentrating flux sleeve of magnetic guiding loop is provided with the concentrating flux plate of fixedlying connected with permanent magnet in the magnetic guiding loop outside; Fixedly connected catch on the concentrating flux sleeve inwall, the step that catch and permanent magnet are provided with is corresponding; Magnetic conduction be placed in away from, be respectively equipped with first, second valve joint near the brake disc end.
The braking method of break of the present invention adopts following steps: 1) during emergency braking, electronic controller controls air pressure or oil pressure promote permanent magnet to moving near the brake disc direction by the pressure of first valve joint input, concentrating flux plate separates with magnetic guiding loop, when permanent magnet moves to the catch position and stops, permanent magnet is minimum apart from the distance of brake disc, the braking moment maximum; Step on brake petal simultaneously, friction stopping device works simultaneously, combines with the permanent magnetism braking device, makes vehicle deceleration or stops; When 2) non-emergent braking or lower long slope are braked, if the speed of a motor vehicle is higher than 30km/h, the pressure size that electronic controller controls is imported first, second valve joint is controlled the braking moment size of permanent magnetism braking device, the wheel in-cylinder pressure of controlling friction stopping device simultaneously is constant, has only the braking of permanent magnetism braking device; If the speed of a motor vehicle is lower than 30km/h, the pressure that electronic controller controls is imported first, second valve joint is constant, regulates friction stopping device wheel in-cylinder pressure simultaneously, has only the friction stopping device braking.
The present invention has increased by a cover permanent magnetism braking device on original traditional friction stopping device basis, its advantage is: 1, whole permanent magnetism braking device volume is less, is convenient to install.2, it is fewer that permanent magnetism braking produces heat, and as long as temperature is not very high, permanent magnet demagnetization phenomenon is not obvious, little to the Braking efficiency influence, and especially in frequent or lasting braking process, heat resistanceheat resistant decline property is good.3, the permanent magnetism braking device provides quite a few braking force, so the friction catch wearing and tearing reduce, the break life-span increases.4, the permanent magnetism braking is contactless braking, can reduce the noise of whole break greatly.
Description of drawings
Fig. 1 is that total assembling structure master of the present invention looks schematic representation;
Fig. 2 is the A-A cutaway view Amplified image of automobile Fig. 1 when non-braking;
Fig. 3 is the A-A cutaway view Amplified image of automobile Fig. 1 when braking;
Fig. 4 is the partial enlarged view of concentrating flux sleeve 3 among Fig. 3, permanent magnet 8, magnetic guiding loop 13 and associated component thereof;
Among the figure: 1. brake disc; 2. knuckle; 3. concentrating flux sleeve; 4. first valve joint; 5. fixing frame; 6. bolt; 7. second valve joint; 8. permanent magnet; 9. concentrating flux plate; 10. catch; 11. seal ring; 12. gasket seal; 13. magnetic guiding loop; 14. screw; 15. brake-caliper support; 16. bolt; 17. braking clamp body; 18. brake calipers guide finger.
Embodiment
Referring to Fig. 1, break of the present invention is made up of permanent magnetism braking device and friction stopping device, and the permanent magnetism braking device is fixedly mounted on the fixing frame 5, and fixing frame 5 is connected in knuckle 2 by bolt 6, and knuckle 2 is connected on the brake disc 1.Friction stopping device is made up of brake-caliper support 15, brake calipers guide finger 18 and braking clamp body 17, and brake-caliper support 15 links to each other with knuckle 2 by bolt 16, and braking clamp body 17 usefulness brake calipers guide fingers 18 are connected with brake-caliper support 15.
Referring to Fig. 2-4, the permanent magnetism braking device is symmetrically distributed in brake disc 1 both sides, and in like manner, the fixing frame 5 that is connected with the permanent magnetism braking device also is symmetrically distributed in brake disc 1 both sides, and the permanent magnetism braking device is made of concentrating flux plate 9, magnetic guiding loop 13, concentrating flux sleeve 3 and permanent magnet 8.Concentrating flux sleeve 3 is through in the respective aperture of fixing frame 5, is connected with fixing frame 5 interference.Permanent magnet 8 and catch 10 are housed in the concentrating flux sleeve 3.Concentrating flux sleeve 3, permanent magnet 8 are even number, are symmetrically distributed in brake disc 1 both sides.Permanent magnet 8 can axially moving back and forth along concentrating flux sleeve 3 within concentrating flux sleeve 3.The gap is with magnetic guiding loop 13 near the permanent magnet 8 of an end of brake disc 1, and installation seal ring 11 is fixed by bolts to magnetic guiding loop 13 on the concentrating flux sleeve 3 between permanent magnet 8 and the magnetic guiding loop 13, between concentrating flux sleeve 3 and magnetic guiding loop 13 gasket seal 12 is installed.In magnetic guiding loop 13 outsides concentrating flux plate 9 is installed, concentrating flux plate 9 is fixed together by screw 14 with permanent magnet 8.Catch 10 is fixedly connected on the inwall of concentrating flux sleeve 3, between permanent magnet 8 outer walls and concentrating flux sleeve 3 inwalls, on permanent magnet 8, step is set, this step is corresponding with catch 10, determine the limit position of permanent magnet 8 when brake disc 1 moves by the step on catch 10 and the permanent magnet 8, when permanent magnet 8 moved to position near brake disc 1, catch 10 contacted with step, defined between concentrating flux plate 9 and the brake disc 1 gap between 0.5mm to 1.5mm.
Shown in Fig. 2,3, be respectively equipped with first valve joint 4 and second valve joint 7 at the two ends of concentrating flux sleeve 3, first valve joint 4 is away from brake disc 1 one ends, second valve joint 7 is near brake disc 1 one ends, driving permanent magnet 8 axially movable power can be that air pressure also can be hydraulic pressure, control the axial position of permanent magnet 8 by controlling the pressure size that feeds first, second valve joint 4,7, control the size of permanent magnetism braking device braking moment by control permanent magnet 8 to the size of brake disc 1 distance.
Concentrating flux sleeve 3 is both as the part of magnetic conductive loop, when non-braking and magnetic guiding loop 13 and concentrating flux plate 9 form magnetic conductive loops, again permanent magnet 8 is played leading role.When permanent magnet 8 is oversize, can be provided with track in concentrating flux sleeve 3 inside, permanent magnet 8 along axis of an orbit to moving back and forth.
When the needs emergency braking, the permanent magnetism braking device of break of the present invention and friction stopping device acting in conjunction; When non-emergent braking, if the speed of a motor vehicle is higher than 30km/h, only need to use the permanent magnetism braking device, if the speed of a motor vehicle is lower than 30km/h, only need use friction stopping device.
As shown in Figure 2, when automobile normal running need not to brake, brake petal was in free position, and friction stopping device is in non-braking state.At this moment, permanent magnet 8 is positioned at the farthest limit position away from brake disc 1.Concentrating flux plate 9 fits tightly with magnetic guiding loop 13, concentrating flux plate 9, magnetic guiding loop 13 form magnetic conductive loop with concentrating flux sleeve 3, and the magnetic field that permanent magnet 8 produces is closed within the magnetic conductive loop, and the permanent magnetism braking device does not externally show magnetic, so do not have braking effect, can effectively prevent the leakage field phenomenon.
As shown in Figure 3, when automobile needs emergency braking, the driver steps on brake petal fast, the sensor at brake petal place is passed to electronic controller with the quick acting signal of brake petal, and electronic controller controls air pressure or oil pressure are from first valve joint, 4 inputs away from brake disc 1, and the pressure of input promotes permanent magnet 8 to moving near brake disc 1 direction, concentrating flux plate 9 separates with magnetic guiding loop 13, magnetic conductive loop is opened, so permanent magnet 8 externally manifests magnetic, forms magnetic field.When permanent magnet 8 moves to catch 10 positions and stops, permanent magnet 8 is minimum apart from the distance of brake disc 1, the distance that guarantees concentrating flux plate 9 and brake disc 1 is between 0.5mm-1.5mm, and permanent magnet 8 externally produces high magnetic fields, and this moment, the braking moment of permanent magnetism braking device reached maximum.Brake disc 1 produces foucault current in the magnetic field high speed rotation of permanent magnet 8 formation of symmetry, thereby brake disc 1 is produced a resistance distance opposite with sense of rotation.Simultaneously, when stepping on brake petal, friction catch works simultaneously, combines with permanent magnetism braking, makes vehicle deceleration or stops.Oil pressure promotes piston braking clamp body 17 is pressed to brake disc 1, produces friction catch moment, and friction catch moment and the stack of permanent magnetism braking moment reach the effect to car deceleration or braking.In the braking process, the calculated signals that electronic controller transmits according to wheel speed sensors goes out the slip rate of each wheel, and control the pressure size that feeds first, second valve joint 4,7 according to slip rate, pressure size according to two valve joints of control input is controlled permanent magnet 8 amount of moving back and forth vertically, realizes the size of permanent magnetism braking moment is controlled.Electronic controller is regulated the oil pressure pressure size of each wheel cylinder according to the slip rate of each wheel simultaneously, thereby can regulate the size of friction brake force.By coordinating the size of permanent magnetism braking force and friction brake force, the slip rate of wheel is controlled within the best effort scope, make each wheel be in the best braking state of not locking.When the needs brake off, discharge brake petal, the friction catch return, electronic controller controls feeds the pressure of first, second valve joint 4,7, the pressure of release in brake disc 1 first valve joint 4 far away increases simultaneously and feeds near the air pressure in second valve joint 7 of brake disc 1 or the pressure of oil pressure, and pressure promotes permanent magnet 8 to moving away from brake disc 1 direction, during original state before permanent magnet 8 is got back to braking, braking effect disappears.
When non-emergent braking of automobile or lower long slope braking, the driver slowly steps on brake petal, the sensor at brake petal place is passed to electronic controller to the signal that brake petal slowly moves, and this moment, electronic controller went out the speed of a motor vehicle according to the calculated signals that wheel speed sensors transmits.If the speed of a motor vehicle is higher than 30km/h, electronic controller controls feeds the pressure size of first, second valve joint 4,7 and controls the braking moment size that permanent magnetism is braked, the wheel in-cylinder pressure of electronic controller controls friction catch is constant simultaneously, have only the permanent magnetism braking device to play braking action this moment, brakes braking vehicle by permanent magnetism.When the needs brake off, discharge brake petal, brake petal place sensor is passed to electronic controller return signal, and electronic controller controls feeds the pressure of first, second valve joint 4,7, makes the permanent magnetism braking device get back to braking state before, and braking is removed.If the speed of a motor vehicle is lower than 30km/h, the pressure that electronic controller controls feeds first, second valve joint 4,7 is constant, regulate friction catch wheel in-cylinder pressure according to each wheel slip simultaneously, have only friction stopping device to play braking action this moment, comes braking vehicle by friction catch.When the needs brake off, discharge brake petal, the friction catch return, braking is removed.
Claims (5)
1. a permanent magnetism is braked and the combined break of friction catch, form by permanent magnetism braking device and friction stopping device, the fixedly connected fixing frame (5) that links to each other with brake disc (1) of permanent magnetism braking device, it is characterized in that: the permanent magnetism braking device is made of concentrating flux plate (9), magnetic guiding loop (13), concentrating flux sleeve (3) and permanent magnet (8), and is symmetrically distributed in brake disc (1) both sides; Concentrating flux sleeve (3) is through in fixing frame (5) respective aperture, be provided with in the concentrating flux sleeve (3) along its permanent magnet that axially moves back and forth (8), permanent magnet (8) is being with magnetic guiding loop (13) near gap on brake disc (1) one end, the fixedly connected concentrating flux sleeve of magnetic guiding loop (13) (3) is provided with the concentrating flux plate (9) of fixedlying connected with permanent magnet (8) in magnetic guiding loop (13) outside; Fixedly connected catch (10) on concentrating flux sleeve (3) inwall, catch (10) is corresponding with the step that permanent magnet (8) is provided with; Concentrating flux sleeve (3) in away from, be respectively equipped with first, second valve joint (4,7) near brake disc (1) end.
2. permanent magnetism braking according to claim 1 and the combined break of friction catch is characterized in that: be provided with seal ring (11) between permanent magnet (8) and the magnetic guiding loop (13), be provided with gasket seal (12) between concentrating flux sleeve (3) and the magnetic guiding loop (13).
3. the braking method of the described break of claim 1 is characterized in that adopting following steps:
1) during emergency braking, electronic controller controls air pressure or oil pressure promote permanent magnet (8) to moving near brake disc (1) direction by the pressure of first valve joint (4) input, concentrating flux plate (9) separates with magnetic guiding loop (13), when permanent magnet (8) moves to catch (10) when the position stops, permanent magnet (8) is minimum apart from the distance of brake disc (1), the braking moment maximum; Step on brake petal simultaneously, friction stopping device works simultaneously, combines braking with the permanent magnetism braking device, makes vehicle deceleration or stops;
When 2) non-emergent braking or lower long slope are braked, if the speed of a motor vehicle is higher than 30km/h, the pressure size that electronic controller controls is imported first, second valve joint (4,7) is controlled the braking moment size of permanent magnetism braking device, the wheel in-cylinder pressure of controlling friction stopping device simultaneously is constant, has only the braking of permanent magnetism braking device; If the speed of a motor vehicle is lower than 30km/h, the pressure that electronic controller controls is imported first, second valve joint (4,7) is constant, regulates friction stopping device wheel in-cylinder pressure simultaneously, has only the friction stopping device braking.
4. braking method according to claim 3 is characterized in that: when permanent magnet (8) moved near brake disc (1) position, the gap was 0.5mm-1.5mm between concentrating flux plate (9) and the brake disc (1).
5. braking method according to claim 3 is characterized in that: in the braking process, control the axially amount of moving back and forth of permanent magnet (8) by the pressure size of control first, second valve joint of input (4,7), thus the size of control permanent magnetism braking force.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110113498 CN102155508B (en) | 2011-05-04 | 2011-05-04 | Permanent magnet braking and frictional braking combined brake and braking method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110113498 CN102155508B (en) | 2011-05-04 | 2011-05-04 | Permanent magnet braking and frictional braking combined brake and braking method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102155508A true CN102155508A (en) | 2011-08-17 |
| CN102155508B CN102155508B (en) | 2013-03-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110113498 Expired - Fee Related CN102155508B (en) | 2011-05-04 | 2011-05-04 | Permanent magnet braking and frictional braking combined brake and braking method |
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Cited By (13)
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| CN103303150A (en) * | 2013-06-17 | 2013-09-18 | 江苏大学 | Wheel edge retarder for trailer and control method of retarder |
| CN103640487A (en) * | 2013-12-09 | 2014-03-19 | 江苏大学 | Electromagnetism and hydraulic pressure compound brake with self power generation function and working method |
| CN104482080A (en) * | 2014-11-14 | 2015-04-01 | 江苏大学 | Electromagnetic and friction integrated brake system and control method thereof |
| US9371876B2 (en) | 2014-02-17 | 2016-06-21 | Universal City Studios Llc | Systems and methods for brake systems with engagement sensing |
| CN106080566A (en) * | 2016-06-04 | 2016-11-09 | 浙江大学 | Automobile composite braking method and apparatus |
| CN106515465A (en) * | 2016-12-23 | 2017-03-22 | 盐城振宇科技发展有限公司 | Directly operated type permanent magnet vortex flow wheel edge retarder and control method thereof |
| CN107917157A (en) * | 2017-11-13 | 2018-04-17 | 孟川 | The brake apparatus and method of a kind of automobile |
| CN109027057A (en) * | 2018-10-18 | 2018-12-18 | 徐州工程学院 | A kind of vehicle magnetic rheological brake |
| CN109058328A (en) * | 2018-08-13 | 2018-12-21 | 江苏大学 | A kind of vehicle wheel side composite braking device of integral permanent-magnet braking and friction catch |
| CN111365387A (en) * | 2020-03-25 | 2020-07-03 | 江苏理工学院 | Vehicle wheel side friction brake and disc type permanent magnet brake integrated device |
| CN113232630A (en) * | 2021-06-07 | 2021-08-10 | 广西柳工机械股份有限公司 | Reluctance brake, braking system and vehicle |
| CN114344746A (en) * | 2022-01-19 | 2022-04-15 | 珠海索奇电子科技有限公司 | Brake control device for high-rise fire life-saving system |
| CN115217867A (en) * | 2022-07-15 | 2022-10-21 | 奇瑞汽车股份有限公司 | Brake caliper for vehicle, return method, and storage medium |
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| CN103303150B (en) * | 2013-06-17 | 2015-11-18 | 江苏大学 | A kind of control method of hanging vehicle wheel limit retarder |
| CN103303150A (en) * | 2013-06-17 | 2013-09-18 | 江苏大学 | Wheel edge retarder for trailer and control method of retarder |
| CN103640487A (en) * | 2013-12-09 | 2014-03-19 | 江苏大学 | Electromagnetism and hydraulic pressure compound brake with self power generation function and working method |
| CN103640487B (en) * | 2013-12-09 | 2015-08-26 | 江苏大学 | A kind of electromagnetism-hydraulic pressure composite brakig device and method of work with spontaneous electrical function |
| US9371876B2 (en) | 2014-02-17 | 2016-06-21 | Universal City Studios Llc | Systems and methods for brake systems with engagement sensing |
| CN104482080A (en) * | 2014-11-14 | 2015-04-01 | 江苏大学 | Electromagnetic and friction integrated brake system and control method thereof |
| CN104482080B (en) * | 2014-11-14 | 2017-01-11 | 江苏大学 | Electromagnetic and friction integrated brake system and control method thereof |
| CN106080566A (en) * | 2016-06-04 | 2016-11-09 | 浙江大学 | Automobile composite braking method and apparatus |
| CN106515465A (en) * | 2016-12-23 | 2017-03-22 | 盐城振宇科技发展有限公司 | Directly operated type permanent magnet vortex flow wheel edge retarder and control method thereof |
| CN107917157A (en) * | 2017-11-13 | 2018-04-17 | 孟川 | The brake apparatus and method of a kind of automobile |
| CN109058328A (en) * | 2018-08-13 | 2018-12-21 | 江苏大学 | A kind of vehicle wheel side composite braking device of integral permanent-magnet braking and friction catch |
| CN109027057A (en) * | 2018-10-18 | 2018-12-18 | 徐州工程学院 | A kind of vehicle magnetic rheological brake |
| CN109027057B (en) * | 2018-10-18 | 2024-05-07 | 徐州工程学院 | Magnetorheological brake for vehicle |
| CN111365387A (en) * | 2020-03-25 | 2020-07-03 | 江苏理工学院 | Vehicle wheel side friction brake and disc type permanent magnet brake integrated device |
| CN111365387B (en) * | 2020-03-25 | 2022-03-25 | 江苏理工学院 | Vehicle wheel side friction brake and disc type permanent magnet brake integrated device |
| CN113232630A (en) * | 2021-06-07 | 2021-08-10 | 广西柳工机械股份有限公司 | Reluctance brake, braking system and vehicle |
| CN113232630B (en) * | 2021-06-07 | 2022-03-29 | 广西柳工机械股份有限公司 | Reluctance brake, braking system and vehicle |
| CN114344746A (en) * | 2022-01-19 | 2022-04-15 | 珠海索奇电子科技有限公司 | Brake control device for high-rise fire life-saving system |
| WO2023138201A1 (en) * | 2022-01-19 | 2023-07-27 | 珠海索奇电子科技有限公司 | Brake control device for high-rise building fire rescue system |
| CN115217867A (en) * | 2022-07-15 | 2022-10-21 | 奇瑞汽车股份有限公司 | Brake caliper for vehicle, return method, and storage medium |
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| CN102155508B (en) | 2013-03-13 |
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