CN117341481A - Novel electric brake - Google Patents
Novel electric brake Download PDFInfo
- Publication number
- CN117341481A CN117341481A CN202311174269.7A CN202311174269A CN117341481A CN 117341481 A CN117341481 A CN 117341481A CN 202311174269 A CN202311174269 A CN 202311174269A CN 117341481 A CN117341481 A CN 117341481A
- Authority
- CN
- China
- Prior art keywords
- speed reducing
- gear
- brake
- power conversion
- parallel shaft
- 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.)
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- 230000007246 mechanism Effects 0.000 claims abstract description 74
- 238000006243 chemical reaction Methods 0.000 claims abstract description 33
- 230000009467 reduction Effects 0.000 claims description 53
- 230000009471 action Effects 0.000 claims description 8
- 238000009434 installation Methods 0.000 claims description 7
- 238000000926 separation method Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000010438 heat treatment Methods 0.000 abstract description 4
- 230000007547 defect Effects 0.000 description 6
- 238000012423 maintenance Methods 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 4
- 230000004044 response Effects 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 206010063385 Intellectualisation Diseases 0.000 description 1
- 206010039203 Road traffic accident Diseases 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L7/00—Electrodynamic brake systems for vehicles in general
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
- H02K7/116—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears
Abstract
The invention relates to a novel electric brake, which comprises a brake shell, wherein a driving motor, a parallel shaft speed reducing mechanism, a power conversion mechanism, an electromagnetic braking device and a rotating speed sensor are arranged in the brake shell; one end of a motor shaft arranged on the driving motor is connected with a parallel shaft speed reducing mechanism, an electromagnetic braking device and a rotating speed sensor are sequentially arranged at the other end of the motor shaft, one end of the parallel shaft speed reducing mechanism is connected with the motor shaft, and the other end of the parallel shaft speed reducing mechanism is connected with the power conversion mechanism. The multistage parallel shaft speed reducing mechanism is used as a speed reducing unit, and the ball screw is used as a motion converting unit, so that the problems of complex speed reducing structure, large braking heating value and high manufacturing cost of conventional electric braking are effectively solved, and the accuracy and the motion distance of the motion converting mechanism are effectively improved; the electromagnetic braking device solves the problems of low braking locking reliability and difficult locking release of the conventional mechanical locking mechanism.
Description
Technical Field
The invention relates to the technical field of vehicle braking, in particular to a novel electric brake.
Background
With the continuous development of automobile technology, the development of automobiles with advanced functions such as new energy, intellectualization, auxiliary driving and the like is rapid, and meanwhile, with the continuous increase of the quantity of the automobile, the running road conditions of the automobiles gradually become complex, and higher requirements are put forward on the braking performance and reliability of an automobile braking system, so that the braking system becomes a key problem affecting road traffic safety
Conventional automotive brake types mainly include: a pneumatic brake and a hydraulic brake; the main problems are: the pneumatic brake drives the braking mechanism to realize vehicle braking through the high-pressure air chamber, and the type of pneumatic brake can basically meet the running requirement of an automobile in terms of braking moment, but has the problems of long braking response time and large braking heating value, and is extremely easy to cause automobile accidents caused by overlarge braking distance or braking fatigue; while the hydraulic brake can effectively avoid the defect of the pneumatic brake, the brake master cylinder is pushed to the braking mechanism by the pressure of hydraulic oil to realize the braking of the vehicle mainly under the action of the vacuum booster, but the type of brake not only needs to rely on a complex external hydraulic system, but also needs to rely on an external complex pipeline to realize the effective action of the brake, thereby causing the defects of higher selling price, complex structure, inconvenient maintenance and the like.
The electronic brake system (EMB) not only can solve the problems of slow brake response and brake fatigue of the pneumatic brake, but also can effectively overcome the defects of higher selling price, complex structure, inconvenient maintenance and the like of the hydraulic brake; therefore, the brake is widely applied to the design and development of new energy intelligent automobiles.
At present, an electronic mechanical braking system comprises a driving mechanism and a motion conversion unit, wherein the driving mechanism mostly adopts a driving motor and planetary gear reduction structure, and a planetary reducer realizes larger torque output through reducing and increasing torque of high-speed torque generated by the driving motor, so that the requirement of braking force can be met, but the planetary reduction mechanism has the defects of complex structure, large reduction heating value and high processing and manufacturing precision requirement, and is not beneficial to high-efficiency low-cost braking of a brake; secondly, the motion conversion mechanism converts the circular motion generated by the driving mechanism into linear motion by adopting a gear rack or worm and gear structure, but the structure has the defects of limited driving distance and poor driving precision, and is extremely easy to cause the problem of insufficient braking force or overlarge braking force, thereby causing braking failure; finally, in the aspect of braking force maintenance, a mechanical clutch is mostly adopted to realize locking of an actuating unit, but the mechanical clutch is easy to have the problem of difficult locking of braking force when braking is carried out, the problem of insufficient braking force is easy to occur when the braking force is insufficient, and the problem of insufficient braking force is caused, and meanwhile, when the braking force is in contact locking, the problem of mechanical friction force causes difficult release of braking, and the faults such as braking dragging and the like are easy to be caused.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides a novel electric brake which adopts a multistage parallel shaft speed reducing mechanism as a speed reducing unit and a ball screw as a motion converting unit, so that the problems of complex speed reducing structure, large braking heating value and high manufacturing cost in conventional electric braking are effectively solved, and meanwhile, the accuracy and the action distance of the motion converting mechanism are effectively improved; finally, the electromagnetic braking device solves the problems of low braking locking reliability and difficult locking release of the conventional mechanical locking mechanism.
In order to solve the problems in the background art, the invention is realized by the following technical scheme:
the novel electric brake comprises a brake shell, wherein a driving motor, a parallel shaft speed reducing mechanism, a power conversion mechanism, an electromagnetic braking device and a rotating speed sensor are arranged in the brake shell;
one end of a motor shaft arranged on the driving motor is connected with the parallel shaft speed reducing mechanism, the other end of the motor shaft is sequentially provided with the electromagnetic braking device and the rotating speed sensor, one end of the parallel shaft speed reducing mechanism is connected with the motor shaft, and the other end of the parallel shaft speed reducing mechanism is connected with the power conversion mechanism.
Preferably, the brake housing comprises a left housing, a middle housing and a right housing, wherein the left housing, the middle housing and the right housing are positioned by positioning pins and are connected by bolts; a driving motor installation cavity and a power conversion mechanism placement cavity are arranged between the left shell and the middle shell, the driving motor is arranged in the driving motor installation cavity, and the power conversion mechanism is arranged in the power conversion mechanism placement cavity; a parallel shaft speed reducing mechanism placing cavity is arranged between the middle shell and the right shell, and the parallel shaft speed reducing mechanism is arranged in the parallel shaft speed reducing mechanism placing cavity.
Preferably, the parallel shaft reduction mechanism comprises a primary reduction gear and a secondary reduction gear, the motor shaft is connected with the primary reduction gear, the primary reduction gear is meshed with the secondary reduction gear, and the secondary reduction gear is meshed with the power conversion mechanism.
Preferably, the secondary reduction gear comprises a primary reduction driven gear, a secondary reduction driving gear and a gear shaft, wherein the primary reduction driven gear, the secondary reduction driving gear and the gear shaft are of an integrated structure, the primary reduction driven gear is meshed with the primary reduction gear, and the secondary reduction driving gear is meshed with the power conversion mechanism.
Preferably, the power conversion mechanism comprises a three-stage reduction gear and a screw, wherein the three-stage reduction gear is fixedly connected with the screw, the screw is provided with balls and a sliding block, and the sliding block is fixedly connected with the brake actuating cylinder.
Preferably, the electromagnetic braking device comprises an electromagnetic braking stator and an electromagnetic braking rotor, wherein the electromagnetic braking stator is fixedly arranged on the inner cavity wall of the left shell through bolts, the electromagnetic braking rotor is fixedly connected with the motor shaft, and a gap between the electromagnetic braking stator and the electromagnetic braking rotor is less than or equal to 0.2mm.
Preferably, a thrust bearing is arranged between the screw rod and the right shell.
Preferably, the rotation speed sensor is arranged at the end part of the motor shaft, the rotation speed sensor controls the action of the driving motor through the collected motor rotation speed signal, and the electromagnetic braking device controls the combination and separation of the electromagnetic braking stator and the electromagnetic braking rotor through the rotation speed sensor.
Compared with the prior art, the invention has the following beneficial technical effects:
1. simple structure, low cost: by adopting the multistage parallel shaft speed reduction structure, the energy consumption of the electric brake can be effectively reduced, the structure of a transmission system is simplified, the reliability of the transmission system is improved, the machining and manufacturing precision requirements of parts are reduced, and the product cost is greatly reduced;
2. accurate braking and high reliability: the ball screw power conversion unit is adopted, and meanwhile, the rotating speed sensor is arranged at the end part of the motor shaft, and the brake actuation is accurately controlled from two aspects of a brake actuating cylinder and a power end, so that the high-efficiency and reliable braking of the brake is realized;
3. accurate locking and quick release: by arranging the electromagnetic braking device at the shaft end of the motor, the braking locking response time of the brake is shortened, the braking locking reliability is effectively improved, meanwhile, the braking locking is released without considering the action of mechanical friction, and the releasing success rate is greatly improved;
4. the brake shells are mutually independent, and the safety is high and the maintenance is convenient and fast: the left shell and the middle shell form an independent driving motor mounting cavity and a power conversion mechanism placing cavity; the middle shell and the right shell form an independent speed reducing mechanism placing cavity; the related shells are mutually independent and do not affect each other, so that the working reliability and the maintenance convenience of different mechanisms of the brake are effectively ensured.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
fig. 2 is a schematic structural view of a reduction gear for headphones according to the present invention.
The drawings are marked with the following description:
1. a driving motor; 2. a primary reduction gear; 3. a motor shaft; 4. a secondary reduction gear; 5. a gear shaft; 6. a three-stage reduction gear; 7. a thrust bearing; 8. a ball; 9. a slide block; 10. a screw rod; 11. a brake cylinder; 12. a guide rail; 13. a rotation speed sensor; 14. a left housing; 15. a threaded fastener 1; 16. an electromagnetic braking stator; 17. an intermediate housing; 18. an electromagnetic brake rotor; 19. a right housing; 41. a first-stage deceleration driven gear; 42. a secondary reduction drive gear.
Detailed Description
The novel electric brake comprises a brake shell, wherein a driving motor 1, a parallel shaft speed reducing mechanism, a power conversion mechanism, an electromagnetic braking device and a rotating speed sensor 13 are arranged in the brake shell;
one end of a motor shaft 3 arranged on the driving motor 1 is connected with a parallel shaft speed reducing mechanism, the other end of the motor shaft 3 is sequentially provided with an electromagnetic braking device and a rotating speed sensor 13, one end of the parallel shaft speed reducing mechanism is connected with the motor shaft 3, and the other end of the parallel shaft speed reducing mechanism is connected with a power conversion mechanism.
The brake housing comprises a left housing 14, a middle housing 17 and a right housing 19, wherein the left housing 14, the middle housing 17 and the right housing 19 are positioned by positioning pins and are connected by bolts; a driving motor installation cavity and a power conversion mechanism placement cavity are arranged between the left shell 14 and the middle shell 17, a driving motor 1 is arranged in the driving motor installation cavity, and a power conversion mechanism is arranged in the power conversion mechanism placement cavity; a parallel shaft speed reducing mechanism placing cavity is arranged between the middle shell 17 and the right shell 19, and a parallel shaft speed reducing mechanism is arranged in the parallel shaft speed reducing mechanism placing cavity.
The left shell 14 and the middle shell 17 form an independent driving motor installation cavity and a power conversion mechanism placement cavity; the middle shell 17 and the right shell 19 form an independent speed reducing mechanism placing cavity; the left shell 14, the middle shell 17 and the right shell 19 are mutually independent and do not affect each other, so that the working reliability and the maintenance convenience of different mechanisms of the brake are effectively ensured.
The parallel shaft speed reducing mechanism comprises a primary speed reducing gear 2 and a secondary speed reducing gear 4, a motor shaft 3 is connected with the primary speed reducing gear 2, the primary speed reducing gear 2 is meshed with the secondary speed reducing gear 4, and the secondary speed reducing gear 4 is meshed with the power conversion mechanism.
The secondary reduction gear 4 comprises a primary reduction driven gear 41, a secondary reduction driving gear 42 and a gear shaft 5, wherein the primary reduction driven gear 41, the secondary reduction driving gear 42 and the gear shaft 5 are of an integrated structure, the primary reduction driven gear 41 is meshed with the primary reduction gear 2, and the secondary reduction driving gear 42 is meshed with the power conversion mechanism.
The multistage parallel shaft speed reducing structure adopts the first-stage speed reducing gear 2 and the second-stage speed reducing gear 4 to form a multistage speed reducing mechanism, so that the energy consumption of the electric brake can be effectively reduced, meanwhile, the structure of a transmission system is simplified, the reliability of the transmission system is improved, the machining and manufacturing precision requirements of parts are reduced, and the product cost is greatly reduced.
The power conversion mechanism comprises a three-stage reduction gear 6 and a screw rod 10, wherein the three-stage reduction gear 6 is fixedly connected with the screw rod 10, the screw rod 10 is provided with a ball 8 and a sliding block 9, and the sliding block 9 is fixedly connected with a brake actuating cylinder 11.
The ball screw 10 power conversion unit is adopted, and meanwhile, the end part of the motor shaft 3 is provided with a rotating speed sensor 13, and the brake actuation is accurately controlled from the two aspects of the brake actuating cylinder 11 and the power end, so that the high-efficiency and reliable braking of the brake is realized;
the electromagnetic braking device comprises an electromagnetic braking stator 16 and an electromagnetic braking rotor 18, wherein the electromagnetic braking stator 16 is fixedly arranged on the inner cavity wall of the left shell 14 through bolts, the electromagnetic braking rotor 18 is fixedly connected with the motor shaft 3, and a gap between the electromagnetic braking stator 16 and the electromagnetic braking rotor 18 is less than or equal to 0.2mm.
By arranging the electromagnetic braking device at the shaft end of the motor, the braking locking response time of the brake is shortened, the braking locking reliability is effectively improved, meanwhile, the braking locking is released without considering the action of mechanical friction, and the releasing success rate is greatly improved.
A thrust bearing 7 is arranged between the screw 10 and the right housing 19. The thrust bearing 7 is provided for counteracting the axially derived forces generated by the power conversion means.
The rotation speed sensor 13 is arranged at the end part of the motor shaft 3, the rotation speed sensor 13 controls the action of the driving motor 1 through the collected motor rotation speed signal, and meanwhile, the electromagnetic braking device controls the combination and separation of the electromagnetic braking stator 16 and the electromagnetic braking rotor 18 through the rotation speed sensor 13.
Claims (8)
1. The novel electric brake is characterized by comprising a brake shell, wherein a driving motor (1), a parallel shaft speed reducing mechanism, a power conversion mechanism, an electromagnetic braking device and a rotating speed sensor (13) are arranged in the brake shell;
one end of a motor shaft (3) arranged on the driving motor (1) is connected with the parallel shaft speed reducing mechanism, the other end of the motor shaft (3) is sequentially provided with the electromagnetic braking device and the rotating speed sensor (13), one end of the parallel shaft speed reducing mechanism is connected with the motor shaft (3), and the other end of the parallel shaft speed reducing mechanism is connected with the power conversion mechanism.
2. The novel electric brake according to claim 1, characterized in that the brake housing comprises a left housing (14), a middle housing (17) and a right housing (19), wherein the left housing (14), the middle housing (17) and the right housing (19) are all positioned by positioning pins and are connected by bolts; a driving motor installation cavity and a power conversion mechanism placement cavity are formed between the left shell (14) and the middle shell (17), the driving motor (1) is arranged in the driving motor installation cavity, and the power conversion mechanism is arranged in the power conversion mechanism placement cavity; a parallel shaft speed reducing mechanism placing cavity is arranged between the middle shell (17) and the right shell (19), and the parallel shaft speed reducing mechanism is arranged in the parallel shaft speed reducing mechanism placing cavity.
3. The novel electric brake according to claim 2, characterized in that the parallel shaft reduction mechanism comprises a primary reduction gear (2) and a secondary reduction gear (4), the motor shaft (3) is connected with the primary reduction gear (2), the primary reduction gear (2) is meshed with the secondary reduction gear (4), and the secondary reduction gear (4) is meshed with the power conversion mechanism.
4. A novel electric brake according to claim 3, characterized in that the secondary reduction gear (4) comprises a primary reduction driven gear (41), a secondary reduction driving gear (42) and a gear shaft (5), the primary reduction driven gear (41), the secondary reduction driving gear (42) and the gear shaft (5) are of an integrated structure, the primary reduction driven gear (41) is meshed with the primary reduction gear (2), and the secondary reduction driving gear (42) is meshed with the power conversion mechanism.
5. The novel electric brake according to claim 3, wherein the power conversion mechanism comprises a three-stage reduction gear (6) and a screw (10), the three-stage reduction gear (6) is fixedly connected with the screw (10), the screw (10) is provided with a ball (8) and a sliding block (9), and the sliding block (9) is fixedly connected with a brake actuating cylinder (11).
6. The novel electric brake according to claim 2, wherein the electromagnetic brake device comprises an electromagnetic brake stator (16) and an electromagnetic brake rotor (18), the electromagnetic brake stator (16) is fixedly arranged on the inner cavity wall of the left shell (14) through bolts, the electromagnetic brake rotor (18) is fixedly connected with the motor shaft (3), and a gap between the electromagnetic brake stator (16) and the electromagnetic brake rotor (18) is less than or equal to 0.2mm.
7. The novel electric brake according to claim 5, characterized in that a thrust bearing (7) is provided between the lead screw (10) and the right housing (19).
8. The novel electric brake according to claim 6, wherein the rotation speed sensor (13) is disposed at an end portion of the motor shaft (3), the rotation speed sensor (13) controls the action of the driving motor (1) through the collected motor rotation speed signal, and the electromagnetic brake device controls the combination and the separation of the electromagnetic brake stator (16) and the electromagnetic brake rotor (18) through the rotation speed sensor (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311174269.7A CN117341481A (en) | 2023-09-12 | 2023-09-12 | Novel electric brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311174269.7A CN117341481A (en) | 2023-09-12 | 2023-09-12 | Novel electric brake |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117341481A true CN117341481A (en) | 2024-01-05 |
Family
ID=89354815
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311174269.7A Pending CN117341481A (en) | 2023-09-12 | 2023-09-12 | Novel electric brake |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117341481A (en) |
-
2023
- 2023-09-12 CN CN202311174269.7A patent/CN117341481A/en active Pending
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