阅读说明：本技术 一种电动汽车高效制动装置及其制动方法 (Efficient braking device and method for electric automobile ) 是由 郑竹安 梁仓 郑精干 石小龙 熊新 翟豪瑞 于 2021-08-17 设计创作，主要内容包括：本发明公开了一种电动汽车高效制动装置及其制动方法,包括制动装置本体,在制动装置本体上设有传动轴,传动轴的中央外部设有驱动制动器,驱动制动器的壳体支架为圆柱状,壳体支架上对称设有一级制动机构、二级制动机构、三级制动机构,制动机构上的液压油缸推轴上设有环抱刹车机构,环抱刹车机构的弧形支架内部表面设有圆弧形制动片,制动装置本体一端的中央设有液压控制器,制动装置本体上配合设有刹车片制动器,刹车片制动器、驱动轴制动器与液压控制器之间采用油管配合连接,该制动装置采用对车轮进行制动的同时还对汽车的传动轴进行制动,使汽车的整个驱动系统同时减速,大大缩短汽车制动的时间,有效延缓刹车制动器制动性能的衰减。(The invention discloses a high-efficiency brake device of an electric automobile and a brake method thereof, the high-efficiency brake device comprises a brake device body, a transmission shaft is arranged on the brake device body, a driving brake is arranged outside the center of the transmission shaft, a shell bracket of the driving brake is cylindrical, a primary brake mechanism, a secondary brake mechanism and a tertiary brake mechanism are symmetrically arranged on the shell bracket, an encircling brake mechanism is arranged on a push shaft of a hydraulic oil cylinder on the brake mechanism, an arc brake disc is arranged on the inner surface of the arc bracket encircling the brake mechanism, a hydraulic controller is arranged in the center of one end of the brake device body, a brake pad brake is arranged on the brake device body in a matching way, the brake pad brake, the driving shaft brake and the hydraulic controller are connected in a matching way by adopting oil pipes, the brake device brakes wheels and simultaneously brakes the transmission shaft of the automobile, so that the whole driving system of the automobile is decelerated, greatly shortens the braking time of the automobile and effectively delays the attenuation of the braking performance of the brake.)

1. The utility model provides a high-efficient arresting gear of electric automobile, includes arresting gear body (1), its characterized in that: the brake device is characterized in that a transmission shaft (19) is arranged on the brake device body (1), a drive shaft brake (4) is arranged outside the center of the transmission shaft (19), the drive shaft brake (4) and the transmission shaft (19) are installed in a matched mode, a shell support (27) is arranged outside the drive shaft brake (4), the shell support (27) is cylindrical, a first-stage brake mechanism (20), a second-stage brake mechanism (21) and a third-stage brake mechanism (22) are symmetrically arranged on the shell support (27), the first-stage brake mechanism (20), the second-stage brake mechanism (21), the third-stage brake mechanism (22) and the shell support (27) are fixedly installed between each other, the transmission shaft (19) is arranged in the center of the first-stage brake mechanism (20), the second-stage brake mechanism (21) and the third-stage brake mechanism (22) on the drive shaft brake (4), a hydraulic controller (2) is arranged at the end of the transmission shaft (19) on the brake device body (1), four brake pad brakes (3) are arranged on the brake device body (1) in a matching way, brake pad driving brackets (25) are symmetrically arranged on the brake pad brakes (3), an H-shaped connecting bracket (11) is arranged between the bottom ends of the two brake pad driving brackets (25), the H-shaped connecting bracket (11) is movably connected with the brake pad driving bracket (25), the top end of the brake pad driving bracket (25) is provided with a telescopic connecting shaft (7), the telescopic connecting shaft (7) is movably connected with the end head of the brake pad driving bracket (25), the outer parts of two ends of the top end of the brake pad driving bracket (25) are provided with movable connecting pieces (9), the movable connecting pieces (9) are matched and installed with movable joints (6) at the top end of the brake pad driving bracket (25), and the hydraulic controller (2) is connected with the driving shaft brake (4) and the brake pad brake (3) in a matching way by adopting hydraulic oil pipes.

2. The efficient braking device for the electric automobile according to claim 1, characterized in that: casing support (27) are cylindric, and the both sides lateral wall symmetry of casing support (27) is equipped with the arrestment mechanism mounting groove, the inside central authorities of casing support (27) are equipped with the transmission shaft mounting groove, and the transmission shaft mounting groove runs through casing support (27).

3. The efficient braking device for the electric automobile according to claim 1, characterized in that: the brake device is characterized in that hydraulic oil cylinders (15) are arranged on the primary brake mechanism (20), the secondary brake mechanism (21) and the tertiary brake mechanism (22), an encircling brake mechanism (23) is arranged at the end of a push shaft of the hydraulic oil cylinder (15), an arc-shaped support is arranged on the encircling brake mechanism (23), an arc-shaped brake disc is arranged on the inner side of the arc-shaped support and fixedly connected with the surface of the inner side of the arc-shaped support, a connector (24) is arranged in the center of the outer wall of the arc-shaped support, the connector (24) and the arc-shaped brake disc are of an integral structure, a prism-shaped mounting groove is formed in the connector (24), and the distance between the brake mechanisms symmetrically mounted on the primary brake mechanism (20), the secondary brake mechanism (21) and the tertiary brake mechanism (22) is 1:2:3 in size ratio.

4. The efficient braking device for the electric automobile according to claim 1, characterized in that: the hydraulic controller (2) is provided with a brake master cylinder, the hydraulic controller (2) is provided with a brake pedal, and the brake pedal, the brake master cylinder and the hydraulic controller are installed in a matched mode.

5. The efficient braking device for the electric automobile according to claim 1, characterized in that: the two ends of the H-shaped connecting support (11) are symmetrically provided with connecting lugs, connecting shaft mounting grooves are formed in the connecting lugs, and annular bearings are arranged in the connecting shaft mounting grooves.

6. The efficient braking device for the electric automobile according to claim 1, characterized in that: the brake block driving support (25) is semicircular, movable joint heads (6) are arranged at the top end and the bottom end of the brake block driving support (25), connecting shafts are symmetrically arranged on two sides of a connector at the bottom end of the brake block driving support (25), the movable joint heads (6) and the brake block driving support (25) are of an integral structure, a brake block mounting groove (26) is formed in the inner side of each movable joint head (6), the brake block mounting groove (26) and the brake block driving support (25) are of an integral structure, locking screws (12) are arranged on the side face, close to the bottom, of each brake block mounting groove (26) at equal intervals, each locking screw (12) penetrates through each brake block mounting groove (26) in the horizontal direction, a brake block (5) is arranged inside each brake block mounting groove (26), a fixing screw is arranged between each brake block (5) and each brake block mounting groove (26), each brake block (5) is arc-shaped, the middle of the brake pad (5) is thick, the two ends of the brake pad are thin, a telescopic connecting shaft installation groove is formed in the movable connecting head (6) at the top end of the brake pad driving support (25), and the telescopic connecting shaft (7) is installed in a matched mode with the telescopic connecting shaft installation groove.

7. The efficient braking device for the electric automobile according to claim 1, characterized in that: the telescopic joint shaft is characterized in that limiting grooves (17) are symmetrically formed in side walls of two sides of the telescopic joint shaft (7), anti-falling heads (18) are arranged at ends of two ends of the telescopic joint shaft (7), the anti-falling heads (18) and the telescopic joint shaft (7) are of an integrated structure, and an anti-lock spring (8) is arranged outside the telescopic joint shaft (7).

8. The efficient braking device for the electric automobile according to claim 1, characterized in that: the movable connecting piece (9) is provided with a groove-shaped support (13), the centers of two ends of the inside of the groove-shaped support (13) are symmetrically provided with hydraulic oil cylinders (15), one end of each hydraulic oil cylinder (15) is provided with an oil guide pipe (16), two walls of the inside of the groove-shaped support (13) of the movable connection (9) are symmetrically provided with limiting heads (14), each limiting head (14) is cylindrical, the limiting heads (14) and the movable connecting piece (9) are of an integral structure, and the limiting heads (14) are installed in a matched mode with limiting grooves (17) in the side walls of the telescopic connecting shafts (7).

9. The high-efficiency braking device for the electric automobile, which is used for realizing the braking method of the high-efficiency braking device for the electric automobile, comprises the following steps:

A. when the vehicle is braked, a brake master cylinder on a hydraulic controller drives hydraulic brake oil in an oil tank after a brake pedal is stepped;

B. hydraulic oil cylinders (15) at two ends inside the movable connecting piece (9) drive a movable joint head (6) above the brake pad brake (3) to enable two brake pad driving brackets (25) on the brake pad brake (3) to simultaneously approach to the middle, and brake pads (5) on the inner sides of the brake pad driving brackets (25) tightly hold brake discs on automobile tires to realize braking and speed reduction;

C. the hydraulic oil cylinder (15) on the first-stage brake mechanism (20), the second-stage brake mechanism (21) and the third-stage brake mechanism (22) in the driving shaft brake (4) pushes out the encircling brake mechanism (23) on the pushing shaft of the hydraulic oil cylinder at the same speed, and the encircling brake mechanism (23) on the pushing shaft of the first-stage brake mechanism (20), the second-stage brake mechanism (21) and the third-stage brake mechanism (22) sequentially embraces the driving shaft (19) to brake and decelerate the driving shaft (19).

Technical Field

The invention relates to the technical field of electric automobile braking devices, in particular to an electric automobile efficient braking device and a braking method thereof.

Background

A vehicle brake system refers to a series of special devices that apply a certain force to certain parts of the vehicle (mainly the wheels) so as to apply a certain degree of forced braking thereto. The braking system has the following functions: the running automobile is forced to decelerate or even stop according to the requirement of a driver; stably parking a stopped vehicle under various road conditions (including on a slope); the speed of the vehicle running on the downhill is kept stable.

At present, the automobile braking is generally the braking of automobile tires, and the braking performance of the automobile is degraded when the automobile brakes are heated when the automobile drives at high speed and brakes frequently.

Disclosure of Invention

The invention aims to provide an electric automobile high-efficiency brake device, wherein a transmission shaft is arranged on a brake device body, a driving brake is arranged outside the center of the transmission shaft, a shell bracket of the driving brake is cylindrical, a primary brake mechanism, a secondary brake mechanism and a tertiary brake mechanism are symmetrically arranged on the shell bracket, an encircling brake mechanism is arranged on a hydraulic oil cylinder push shaft on the brake mechanism, an arc-shaped brake disc is arranged on the inner surface of the arc-shaped bracket encircling the brake mechanism, a hydraulic controller is arranged in the center of one end of the brake device body, a brake pad brake is matched and arranged on the brake device body, the brake pad brake, the driving shaft brake and the hydraulic controller are matched and connected by adopting oil pipes, the brake device brakes a transmission shaft of an automobile while braking wheels, so that the whole driving system of the automobile is decelerated at the same time, and the braking time of the automobile is greatly shortened, to solve the problems set forth in the background art described above.

In order to achieve the purpose, the invention provides the following technical scheme: a high-efficiency braking device of an electric automobile comprises a braking device body, wherein a transmission shaft is arranged on the braking device body, a driving shaft brake is arranged outside the center of the transmission shaft, the driving shaft brake and the transmission shaft are installed in a matched mode, a shell support is arranged outside the driving shaft brake and is cylindrical, a primary braking mechanism, a secondary braking mechanism and a tertiary braking mechanism are symmetrically arranged on the shell support, the primary braking mechanism, the secondary braking mechanism and the tertiary braking mechanism are fixedly installed between the primary braking mechanism, the secondary braking mechanism and the tertiary braking mechanism and the shell support, the transmission shaft is arranged in the center of the primary braking mechanism, the secondary braking mechanism and the tertiary braking mechanism on the driving shaft brake, a hydraulic controller is arranged at one end of the transmission shaft on the braking device body, four brake pad brakes are arranged on the braking device body in a matched mode, and brake pad driving supports are symmetrically arranged on the brake pad brakes, an H-shaped connecting support is arranged between the bottom ends of the two brake pad driving supports, the H-shaped connecting support is movably connected with the brake pad driving supports, a telescopic connecting shaft is arranged at the top end of each brake pad driving support, the telescopic connecting shaft is movably connected with the end head of each brake pad driving support, movable connecting pieces are arranged outside the two end heads at the top end of each brake pad driving support, the movable connecting pieces are installed in a matched mode with the movable connecting heads at the top ends of the brake pad driving supports, and the hydraulic controller is connected with the driving shaft brake and the brake pad brake in a matched mode through hydraulic oil pipes.

Preferably, the shell support is cylindrical, the two side walls of the shell support are symmetrically provided with brake mechanism mounting grooves, the center inside the shell support is provided with a transmission shaft mounting groove, and the transmission shaft mounting groove penetrates through the shell support.

Preferably, the primary braking mechanism, the secondary braking mechanism and the tertiary braking mechanism are all provided with hydraulic cylinders, the ends of push shafts of the hydraulic cylinders are provided with encircling braking mechanisms, the encircling braking mechanisms are provided with arc-shaped supports, the inner sides of the arc-shaped supports are provided with arc-shaped braking pieces, the arc-shaped braking pieces are fixedly connected with the inner side surfaces of the arc-shaped supports, the centers of the outer walls of the arc-shaped supports are provided with connectors, the connectors and the arc-shaped braking pieces are of an integrated structure, prismatic mounting grooves are formed in the connectors, and the space proportion among the braking mechanisms symmetrically mounted on the primary braking mechanism, the secondary braking mechanism and the tertiary braking mechanism is 1:2: 3.

Preferably, a brake master cylinder is arranged on the hydraulic controller, a brake pedal is arranged on the hydraulic controller, and the brake pedal, the brake master cylinder and the hydraulic controller are installed in a matched mode.

Preferably, the two ends of the H-shaped connecting support are symmetrically provided with connecting lugs, a connecting shaft mounting groove is formed in the connecting lugs, and an annular bearing is arranged in the connecting shaft mounting groove.

Preferably, the brake pad driving bracket is in a semi-circular ring shape, the top end and the bottom end of the brake pad driving bracket are both provided with movable joints, connecting shafts are symmetrically arranged on two sides of a connector at the bottom end of the brake pad driving bracket, the movable connector and the brake pad driving bracket are in an integral structure, a brake pad mounting groove is arranged on the inner side of the movable connector, the brake pad mounting groove and the brake pad driving bracket are in an integral structure, the side surface of the brake piece mounting groove close to the bottom is provided with locking screws at equal intervals, the locking screws penetrate through the brake piece mounting groove in the horizontal direction, a brake piece is arranged in the brake piece mounting groove, a fixing screw is arranged between the brake piece and the brake piece mounting groove, the brake piece is arc-shaped, the middle of the brake piece is thick, the two ends of the brake piece are thin, a telescopic connecting shaft installation groove is formed in the movable connecting head at the top end of the brake piece driving support, and the telescopic connecting shaft installation groove are installed in a matched mode.

Preferably, the both sides lateral wall symmetry of flexible linking axle is equipped with the spacing groove, and the both ends end of flexible linking axle all is equipped with the anticreep head, anticreep head and flexible linking axle structure as an organic whole, the outside of flexible linking axle is equipped with anti-lock spring.

Preferably, a groove-shaped support is arranged on the movable connecting piece, hydraulic oil cylinders are symmetrically arranged in the centers of two ends inside the groove-shaped support, an oil guide pipe is arranged at one end of each hydraulic oil cylinder, limiting heads are symmetrically arranged on two walls inside the groove-shaped support of the movable connecting piece and are cylindrical, the limiting heads and the movable connecting piece are of an integrated structure, and the limiting heads are installed in a matched mode with limiting grooves in the side walls of the telescopic connecting shafts.

Preferably, the braking method of the high-efficiency braking device for the electric automobile comprises the following steps:

A. when the vehicle is braked, a brake master cylinder on a hydraulic controller drives hydraulic brake oil in an oil tank after a brake pedal is stepped;

B. hydraulic oil cylinders at two ends inside the movable connecting piece drive movable joints above the brake block brakes, so that two brake block driving brackets on the brake block brakes are simultaneously closed to the middle, and brake blocks on the inner sides of the brake block driving brackets tightly hold brake discs on automobile tires to realize braking and speed reduction;

C. the first-stage brake mechanism, the second-stage brake mechanism and the hydraulic oil cylinder on the third-stage brake mechanism in the drive shaft brake push out the encircling brake mechanism on the hydraulic oil cylinder push shaft at the same speed, and the encircling brake mechanism on the first-stage brake mechanism, the second-stage brake mechanism and the third-stage brake mechanism push shaft sequentially embraces the drive shaft to brake and decelerate the drive shaft.

Compared with the prior art, the invention has the beneficial effects that:

(1) the connector and the arc brake piece are of an integral structure, the surrounding brake mechanism realizes omnibearing wrapping type braking when braking is carried out, the contact friction surface is larger, and the braking effect is better;

(2) the space proportion among the brake mechanisms symmetrically arranged on the first-stage brake mechanism, the second-stage brake mechanism and the third-stage brake mechanism is 1:2:3, the space between the brake pad brakes on the different brake mechanisms at the third stage is gradually increased from small to small, the brake mechanism starts to brake when braking is carried out, and the brake mechanism gradually reaches the second-stage brake mechanism and the third-stage brake mechanism, so that the brake of the drive shaft brake to the drive shaft is more linear, and the brake effect of the drive shaft brake to the drive shaft can be ensured;

(3) an anti-lock spring is arranged outside the telescopic connecting shaft, the telescopic connecting shaft is movably connected with the end heads of the brake piece driving supports, the telescopic connecting shaft has a connecting effect on the two brake piece driving supports, and the two brake piece driving supports can be prevented from locking a tire brake disc after being braked;

(4) the hydraulic controller is matched and connected with the driving shaft brake and the brake pad brake through hydraulic oil pipes, and the hydraulic controller realizes simultaneous control of the driving shaft brake and the brake pad brake, so that the response speed and the braking effect of the vehicle brake are improved;

(5) the hydraulic controller realizes the simultaneous control of the driving shaft brake and the brake pad brake, the response speed and the braking effect of the vehicle brake are improved, and the driving shaft brake brakes the driving shaft, so that the attenuation of the braking performance of the brake is effectively delayed;

(6) the braking device brakes the wheels and brakes the transmission shaft of the automobile at the same time, so that the whole driving system of the automobile decelerates simultaneously, the braking time of the automobile is greatly shortened, and the attenuation of the braking performance of the brake is effectively delayed.

Drawings

FIG. 1 is a schematic structural diagram of a braking device according to the present invention;

FIG. 2 is a schematic view of the brake pad brake of the present invention;

FIG. 3 is a schematic view of the movable joint of the present invention engaged with a retractable joint shaft;

FIG. 4 is a schematic view of the construction of the flexible connector of the present invention;

FIG. 5 is a schematic view of a telescoping joint shaft according to the present invention;

FIG. 6 is a cross-sectional view of the drive shaft brake of the present invention;

FIG. 7 is a cross-sectional view of the wrap-around brake mechanism of the present invention.

In the figure: 1. a brake device body; 2. a hydraulic controller; 3. a brake pad brake; 4. a drive shaft brake; 5. a brake pad; 6. a movable adapter; 7. a telescopic connecting shaft; 8. an anti-lock spring; 9. a movable connecting piece; 10. a connecting shaft; 11. an H-shaped connecting bracket; 12. locking screws; 13. a trough-shaped bracket; 14. a limiting head; 15. a hydraulic cylinder; 16. an oil guide pipe; 17. a limiting groove; 18. the head is prevented from falling off; 19. a drive shaft; 20. a primary braking mechanism; 21. a secondary braking mechanism; 22. a third-stage braking mechanism; 23. encircling the brake mechanism; 24. a connector; 25. a brake pad drive bracket; 26. a brake pad mounting groove; 27. a housing bracket.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-7, the present invention provides a technical solution: the utility model provides a high-efficient arresting gear of electric automobile, including arresting gear body 1, be equipped with transmission shaft 19 on the arresting gear body 1, the central authorities outside of transmission shaft 19 is equipped with drive shaft brake 4, the cooperation installation between drive shaft brake 4 and the transmission shaft 19, the outside of drive shaft brake 4 is equipped with shell support 27, shell support 27 is cylindric, shell support 27's both sides lateral wall symmetry is equipped with the arrestment mechanism mounting groove, shell support 27's inside central authorities are equipped with the transmission shaft mounting groove, the transmission shaft mounting groove runs through shell support 27.

The shell support 27 is symmetrically provided with a first-stage brake mechanism 20, a second-stage brake mechanism 21 and a third-stage brake mechanism 22, the first-stage brake mechanism 20, the second-stage brake mechanism 21 and the third-stage brake mechanism 22 are all provided with hydraulic oil cylinders 15, the end of a push shaft of each hydraulic oil cylinder 15 is provided with an encircling brake mechanism 23, the encircling brake mechanism 23 is provided with an arc-shaped support, the inner side of the arc-shaped support is provided with an arc-shaped brake piece, the arc-shaped brake piece is fixedly connected with the inner side surface of the arc-shaped support, the center of the outer wall of the arc-shaped support is provided with a connector 24, the connector 24 and the arc-shaped brake piece are of an integral structure, the encircling brake mechanism 23 realizes omnibearing wrapping type braking during braking, the contact friction surface is larger, the braking effect is better, a prism-shaped mounting groove is formed in the connector 24, the distance between the symmetrically mounted brake mechanisms on the first-stage brake mechanism 20, the second-stage brake mechanism 21 and the third-stage brake mechanism 22 is in a proportion of 1:2:3, one-level brake mechanism 20, second grade brake mechanism 21, fixed mounting between tertiary brake mechanism 22 and the casing support 27, the interval between brake block brake 3 on the brake mechanism of tertiary difference is by little crescent, also begin to brake by one-level brake mechanism 20 when carrying out the braking, reach second grade brake mechanism 21 gradually, tertiary brake mechanism 22, make drive shaft brake 4 more linear to the braking of drive shaft like this, can guarantee the braking effect of drive shaft brake 4 to the drive shaft simultaneously again.

The transmission shaft 19 is arranged in the center of the first-stage brake mechanism 20, the second-stage brake mechanism 21 and the third-stage brake mechanism 22 on the drive shaft brake 4, the hydraulic controller 2 is arranged at the end of one end of the transmission shaft 19 on the brake device body 1, the brake master cylinder is arranged on the hydraulic controller 2, the brake pedal is arranged on the hydraulic controller 2, and the brake pedal, the brake master cylinder and the hydraulic controller are installed in a matched mode.

Four brake pad brakes 3 are matched and arranged on a brake device body 1, brake pad driving supports 25 are symmetrically arranged on the brake pad brakes 3, the brake pad driving supports 25 are semicircular, movable joint heads 6 are arranged at the top ends and the bottom ends of the brake pad driving supports 25, connecting shafts are symmetrically arranged on two sides of a connecting head at the bottom end of each brake pad driving support 25, the movable joint heads 6 and the brake pad driving supports 25 are of an integral structure, a brake pad mounting groove 26 is formed in the inner side of each movable joint head 6, the brake pad mounting groove 26 and the brake pad driving supports 25 are of an integral structure, locking screws 12 are arranged on the side faces, close to the bottom, of the brake pad mounting grooves 26 at equal intervals, the locking screws 12 penetrate through the brake pad mounting grooves 26 in the horizontal direction, brake pads 5 are arranged inside the brake pad mounting grooves 26, fixing screws are arranged between the brake pads 5 and the brake pad mounting grooves 26, and the brake pads 5 are arc-shaped, the middle of the brake piece 5 is thick, the two ends of the brake piece are thin, a telescopic connecting shaft installation groove is formed in the movable connecting head 6 at the top end of the brake piece driving support 25, and the telescopic connecting shaft 7 is installed in cooperation with the telescopic connecting shaft installation groove.

An H-shaped connecting support 11 is arranged between the bottom ends of the two brake disc driving supports 25, connecting lugs are symmetrically arranged at the end heads of the two ends of the H-shaped connecting support 11, a connecting shaft mounting groove is formed in the connecting lugs, an annular bearing is arranged in the connecting shaft mounting groove, and the H-shaped connecting support 11 is movably connected with the brake disc driving supports 25.

The top of braking piece drive support 25 is equipped with flexible linking axle 7, the both sides lateral wall symmetry of flexible linking axle 7 is equipped with spacing groove 17, the both ends end of flexible linking axle 7 all is equipped with anticreep head 18, anticreep head 18 and flexible linking axle 7 structure as an organic whole, the outside of flexible linking axle 7 is equipped with anti-lock spring 8, swing joint between the end of flexible linking axle 7 and braking piece drive support 25, flexible linking axle 7 has the linking effect to two braking piece drive supports 25, can avoid two braking piece drive supports 25 to brake the back to the tire brake disc lock simultaneously again.

The movable connecting pieces 9 are arranged outside two ends at the top end of the brake pad driving bracket 25, the movable connecting pieces 9 are provided with groove-shaped brackets 13, the centers of two ends inside the groove-shaped brackets 13 are symmetrically provided with hydraulic oil cylinders 15, one end of each hydraulic oil cylinder 15 is provided with an oil guide pipe 16, two walls inside the groove-shaped brackets 13 of the movable connecting pieces 9 are symmetrically provided with limiting heads 14, the limiting heads 14 are cylindrical, the limiting heads 14 and the movable connecting pieces 9 are of an integral structure, the limiting heads 14 are matched and installed with limiting grooves 17 on the side walls of a telescopic connecting shaft 7, the movable connecting pieces 9 are matched and installed with movable connecting heads 6 at the top end of the brake pad driving bracket 25, the hydraulic controller 2 is matched and connected with a driving shaft brake 4 and a brake pad brake 3 by adopting hydraulic oil pipes, the hydraulic controller 2 realizes the simultaneous control of the driving shaft brake 4 and the brake pad brake 3, and improves the response speed and the braking effect of the vehicle brake, the drive shaft brake 4 brakes the drive shaft 19, and the attenuation of the braking performance of the brake 3 is effectively delayed.

The braking method of the high-efficiency braking device of the electric automobile comprises the following steps: when a vehicle is braked, a brake master cylinder on a hydraulic controller drives hydraulic brake oil in an oil tank after a brake pedal is stepped down, hydraulic oil cylinders 15 at two ends in a movable connecting piece 9 drive movable joints 6 above a brake pad brake 3, two brake pad driving brackets 25 on the brake pad brake 3 are simultaneously closed towards the middle, brake pads 5 at the inner sides of the brake pad driving brackets 25 tightly hold brake discs on automobile tires to realize brake deceleration, hydraulic oil cylinders 15 on a first-stage brake mechanism 20, a second-stage brake mechanism 21 and a third-stage brake mechanism 22 in a driving shaft brake 4 push out an encircling brake mechanism 23 and a first-stage brake mechanism 20 on a hydraulic oil cylinder pushing shaft at the same speed, the two-stage brake mechanism 21 and the three-stage brake mechanism 22 push the surrounding brake mechanism 23 on the shaft to sequentially embrace the transmission shaft 19 to brake and decelerate the transmission shaft 19.

The braking device brakes the wheels and brakes the transmission shaft of the automobile at the same time, so that the whole driving system of the automobile decelerates at the same time, the braking time of the automobile is greatly shortened, and the attenuation of the braking performance of the brake 3 is effectively delayed.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.