CN107542817B - Electric brake - Google Patents
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- CN107542817B CN107542817B CN201710763690.XA CN201710763690A CN107542817B CN 107542817 B CN107542817 B CN 107542817B CN 201710763690 A CN201710763690 A CN 201710763690A CN 107542817 B CN107542817 B CN 107542817B
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- 239000003638 chemical reducing agent Substances 0.000 claims description 16
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- 230000000149 penetrating effect Effects 0.000 claims description 3
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- 230000007246 mechanism Effects 0.000 description 9
- 238000009434 installation Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 7
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- 238000006243 chemical reaction Methods 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 1
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Abstract
The invention provides an electric brake, and belongs to the technical field of vehicle braking. It has solved the current poor problem of electric brake braking effect. The electric brake comprises a driving piece, a brake lining, a brake disc, a first pushing rod arranged between the driving piece and the brake lining, a second pushing rod arranged between the driving piece and the brake lining, wherein the first pushing rod and the second pushing rod are in transmission connection with the driving piece and can drive the brake lining to lean against the brake disc under the driving of the driving piece, the electric brake further comprises two pressure sensors and a controller, the two pressure sensors can respectively detect the braking force applied by the first pushing rod and the second pushing rod to the brake lining and send the braking force information to the controller, and the controller can receive the braking force information of the pressure sensors and control the driving force output by the driving piece. The electric brake has the advantage of good braking effect.
Description
Technical Field
The invention belongs to the technical field of vehicle braking, and relates to an electric brake.
Background
The brake system is an important component of the automobile, and most of the existing brake devices of the automobile are hydraulically braked. During braking, a driver controls the hydraulic brake master cylinder to be pressurized through the vacuum booster through the pedal, and the hydraulic brake master cylinder is transmitted to the brake slave cylinders of all wheels in a hydraulic pipeline mode to hydraulically brake the disc brake. However, in the use process of the hydraulic braking system, oil leakage is easy to occur and the response speed is low because the hydraulic pipeline mode is adopted for braking force transmission.
For this purpose, an electric brake is designed and filed in China (its application number is 200820226958.2; its publication number is CN 201326669Y), and the electric brake comprises a brake clamp, a brake cylinder and a motor capable of realizing forward rotation and reverse rotation are mounted on the brake clamp, a speed reducer is mounted at the output end of the motor, a ball screw-nut mechanism is mounted in the brake cylinder, a screw rod of the ball screw-nut mechanism is connected with the output end of the speed reducer, and a pressure plate is mounted on a nut of the ball screw-nut mechanism. When the brake device is used, the motor outputs power through the speed reducer to drive the screw rod to rotate, so that the brake nut and the pressure plate are driven to compress and retract towards the brake disc, braking is realized or released, oil leakage is avoided, and the response speed is high.
However, in the electric brake, only one brake nut is driven by a motor to press one friction plate on a brake disc so as to realize braking, and the friction plate is not directly connected and fixed with the brake nut, but the brake disc rotates circumferentially when driving, so that when the brake nut pushes the friction plate to be abutted against the brake disc, the friction plate is easy to deflect around an action point of the brake nut along with the rotation of the brake disc, so that the situation of eccentric wear of the friction plate is caused, and the braking effect is poor; and the electric brake is difficult to determine whether the braking force of the friction plate is enough or not in braking, and the situation that the braking effect is poor, the braking response speed is slow and even the braking is invalid is easily caused by insufficient braking force after the friction plate is worn after long-term use.
Disclosure of Invention
The invention aims to solve the problems in the prior art, and provides an electric brake, which aims to solve the technical problem of improving the braking effect of the electric brake.
The aim of the invention can be achieved by the following technical scheme:
The electric brake comprises a driving piece, a brake lining, a brake disc and a first push rod arranged between the driving piece and the brake lining, and is characterized in that a second push rod is further arranged between the driving piece and the brake lining, the first push rod and the second push rod are in transmission connection with the driving piece and can drive the brake lining to lean against the brake disc under the driving of the driving piece, the electric brake further comprises two pressure sensors and a controller, the two pressure sensors can respectively detect the braking force applied by the first push rod and the second push rod to the brake lining and send braking force information to the controller, and the controller can receive the braking force information of the pressure sensors and control the driving force output by the driving piece.
When the electric brake is used for braking, the first pushing rod and the second pushing rod are driven by the driving piece to drive the brake lining to abut against the brake disc, so that braking is realized. In the braking process, the braking force is applied to the same brake lining through the two pushing rod structures of the pushing rod I and the pushing rod II, so that the braking force is larger, and the braking effect is good. Meanwhile, the braking force applied by the first pushing rod and the second pushing rod is detected through the pressure sensor, the braking force can be compared with the preset braking force, and then the driving force output by the driving piece is controlled by the controller to adjust the braking force applied by the first pushing rod and the second pushing rod within a reasonable range, so that the enough braking force is ensured, and the stability of the braking effect is ensured. In a delivery test stage or a maintenance stage, aiming at the same electric brake, two pressure sensors respectively detect the magnitude of the braking force output by the first pushing rod and the second pushing rod and feed the magnitude back to the controller, a tester can know the braking force difference of the first pushing rod and the second pushing rod according to a built-in display or an external display of a vehicle, and the braking force born by the whole brake lining is uniform without eccentric wear by adjusting a transmission structure between the first pushing rod, the second pushing rod and a driving piece, so that the electric brake can meet the use requirements in electric driving braking and electric parking; according to the electric brakes of the whole vehicle, the input force of the driving piece on each brake can be adjusted according to the braking force information fed back by the pressure sensor, so that the braking force of each brake is matched with the braking force required by the whole vehicle, the braking effect is improved, the problem of braking deviation is solved, and the abrasion of the brake linings is uniform.
In the above-mentioned electric brake, the electric brake still includes suggestion module and can detect the wearing and tearing sensor of above-mentioned brake lining wearing and tearing volume, wearing and tearing sensor and suggestion module all are connected and wearing and tearing sensor can send wearing and tearing information to above-mentioned controller with above-mentioned controller, the controller can receive wearing and tearing information and send corresponding suggestion information to above-mentioned suggestion module. The wear sensor is used for detecting the wear condition of the brake lining and sending the wear condition to the controller, and when the wear amount reaches a limit value, the controller sends a prompt signal to the prompt module for prompting the attention of a user so as to facilitate the user to replace the brake lining in time and ensure the braking effect.
In the above-mentioned electric brake, the electric brake further includes a synchronous transmission structure and a synchronizing member, one end of the first push rod and one end of the second push rod are in transmission connection with the driving member through the synchronous transmission structure, the other end of the first push rod and the other end of the second push rod are both fixedly connected with the synchronous member, and the first push rod and the second push rod can synchronously push out and drive the brake lining to move under the action of the driving member and the synchronous transmission structure. The synchronous transmission structure and the synchronous piece are used for synchronizing the two ends of the first pushing rod and the second pushing rod, so that the synchronism of the first pushing rod and the second pushing rod during pushing out is ensured, the situation that the brake linings driven by the first pushing rod and the second pushing rod are deviated during braking to cause eccentric wear is avoided, and the braking effect is improved.
In the above-mentioned electric brake, the driving member includes a motor, the synchronous transmission structure includes a driving gear, a first nut and a second nut, the first and second push rods are screw rods, the first nut is in threaded connection with the first push rod, the second nut is in threaded connection with the second push rod, the driving gear is in transmission connection with an output shaft of the motor, a plurality of transmission teeth are respectively arranged on the outer side of the first nut and the outer side of the second nut, the first nut is in transmission connection with the driving gear through the transmission teeth on the outer side, and the second nut is in transmission connection with the driving gear through the transmission teeth on the outer side. When the synchronous transmission structure works, the driving gear transmits power output by the motor and drives the first nut and the second nut to rotate, one ends of the first pushing rod and the second pushing rod are fixedly connected with the synchronous piece, the first pushing rod and the second pushing rod cannot rotate, and in the rotating process of the first nut and the second nut, the first pushing rod and the second pushing rod push out or retract along the axis of the first pushing rod and the second pushing rod, so that circumferential rotation is converted into linear motion. By adopting the gear transmission structure of the driving gear and the transmission gear, the transmission process is more stable, and the output braking force is also more stable.
In the above electric brake, the two pressure sensors are respectively disposed on one side of the first nut and one side of the second nut, and when the first push rod and the second push rod drive the brake lining to abut against the brake disc, the first nut and the second nut can respectively apply forces to the two pressure sensors. When the first pushing rod and the second pushing rod push the brake lining to be abutted against the brake disc, the first pushing rod and the second pushing rod respectively receive reaction forces and transmit the reaction forces to the pressure sensor through the first nut and the second nut, so that the pressure sensor can detect the braking force exerted by the first pushing rod and the second pushing rod.
In the above electric brake, the transmission ratio between the driving gear and the first nut is equal to the transmission ratio between the driving gear and the second nut. The transmission ratio is equal to ensure the synchronism of the driving gear on the transmission of the first pushing rod and the second pushing rod.
In the above electric brake, the first pushing rod has a first connecting portion at one end connected to the synchronizing member, the second pushing rod has a second connecting portion at one end connected to the synchronizing member, the first and second through holes are formed in the synchronizing member in a penetrating manner, the first through hole has a cross-sectional shape matching with that of the first connecting portion, the first connecting portion penetrates into the first through hole and is circumferentially fixed to the synchronizing member, the second through hole has a cross-sectional shape matching with that of the second connecting portion, the second connecting portion penetrates into the second through hole and is circumferentially fixed to the synchronizing member, and the first pushing rod and the second pushing rod are axially fixed to the synchronizing member through the connecting member. The first pushing rod, the second pushing rod and the synchronizing piece are connected through the matching of the shapes, so that the circumferential fixing effect is better, and the connection is more convenient. The connecting piece can be a common connecting part such as a clamp spring, a screw and the like.
As another case, in the above-mentioned electric brake, the electric brake further includes a housing having a first installation cavity and a second installation cavity, both of which are columnar, the first push rod and the second push rod are disposed in the first installation cavity and the second installation cavity, respectively, the driving member includes a cylinder, the synchronous transmission structure includes a first link disposed between the first push rod and the outer end of the piston rod of the cylinder and a second link disposed between the second push rod and the outer end of the piston rod of the cylinder, both ends of the first link are hinged to the outer ends of the piston rod of the first push rod and the outer end of the piston rod of the cylinder, respectively, and both ends of the second link are hinged to the second push rod and the outer end of the piston rod of the cylinder, respectively. The first and second connecting rods with equal length are matched with one piston to synchronously drive one ends of the first and second pushing rods connected with the driving piece, so that the first and second pushing rods move back and forth in the first and second mounting cavities along the axial direction of the cavity body.
In the above electric brake, the driving member further comprises a speed reducer in transmission connection with the output shaft of the motor, and the driving gear is sleeved on the outer side of the output shaft of the speed reducer and fixedly connected with the output shaft of the speed reducer. The arrangement of the speed reducer and the cooperation of the driving gear and the transmission gear can achieve the effect of multistage speed reduction and torque increase, so that the axial output force of the push disc is increased, and the driving braking moment and the parking braking moment meeting the requirements of the whole vehicle are generated.
In the above electric brake, an overload protection mechanism is further connected between the output shaft of the motor and the speed reducer. The overload protection mechanism is used for generating slipping when the output torque exceeds the self slipping torque, so that the transmission is disconnected, and the motor is protected. The overload protection mechanism can be selected from the existing overload protection mechanisms, and the structure of the overload protection mechanism is not specifically described.
In the above-mentioned electric brake, the electric brake further includes a third push rod, the third push rod and the first push rod are disposed on the same side of the synchronizing member, one end of the third push rod is in transmission connection with the driving member through the synchronous transmission structure, the other end of the third push rod is in fixed connection with the synchronizing member, and the third push rod can be driven by the driving member to push out the synchronizing member. If necessary, a third push rod can be added on the basis of the first push rod and the second push rod, so that the triangular positioning of the brake lining is realized.
In the above electric brake, the push rod one and the push rod two are respectively sleeved and axially fixed with annular push plates, the two push plates are opposite to the brake lining, and the two push plates can abut against the brake lining and push the brake lining to abut against the brake disc. The structure of the push disc enlarges the stress area of the brake lining during braking, improves the stability of the brake lining during braking, and ensures the braking effect. Meanwhile, the pushing disc is only subjected to axial moving acting force in the process of pushing the brake lining to realize braking, and the pushing disc is stable in stress and not easy to damage.
In the electric brake, the output shaft of the motor is further provided with an adjusting head for manual driving, and the adjusting head extends out of the rear end of the motor shell of the motor. The adjusting head extending out of the motor shell is arranged at the rear end of the motor, and the adjusting head is manually operated to carry out manual temporary emergency rotation on the output shaft of the motor when the motor cannot automatically rotate forwards or backwards due to power failure or other faults, so that the functions of releasing service brake, parking brake, adjusting brake clearance or replacing friction blocks and the like are realized.
Compared with the prior art, the electric brake has the following advantages:
1. the pressure sensor detects the braking force and feeds back the braking force to the controller to realize the control of the braking force, the braking force is stable in output, and the conditions of eccentric wear of the brake lining and the like can be timely found and adjusted, so that the braking effect is improved.
2. The motor drives the first pushing rod and the second pushing rod through the speed reducer and the gear set, and the motor has large braking force and high response speed.
3. The first pushing rod and the second pushing rod synchronously move to push one brake lining, the braking force is large and uniform, so that the brake lining is not easy to wear off-set, the braking effect is ensured, the braking force of the electric brake can meet the requirements of service braking and parking braking, the application range is wide, and the functions are multiple.
Drawings
FIG. 1 is a schematic view of a partially cut-away structure of the present electric brake.
Fig. 2 is a schematic block diagram of the present electric brake.
Fig. 3 is a schematic cross-sectional view of the synchronous drive in the present electric brake.
Fig. 4 is a schematic cross-sectional view of another view of the synchronous drive.
Fig. 5 is a schematic cross-sectional view of another view of the synchronous drive.
Fig. 6 is an enlarged view of the junction of the pusher bar one and the synchronizing member.
In the figure, 1, a driving member; 2. a brake lining; 3. a brake disc; 4. pushing the first rod; 5. pushing the second rod; 6. a pressure sensor; 7. a controller; 9. a prompting module; 10. a wear sensor; 11. a synchronizing member; 12. a drive gear; 13. a first nut; 14. a second nut; 15. a connecting piece; 16. a speed reducer; 17. a transition gear; 18. a driven gear I; 19. a driven gear II; 20. pushing the disc; 21. and a bracket.
Detailed Description
The following are specific embodiments of the present invention and the technical solutions of the present invention will be further described with reference to the accompanying drawings, but the present invention is not limited to these embodiments.
As shown in fig. 1, 3, 4, 5 and 6, the electric brake comprises a driving member 1, a brake lining 2 and a brake disc 3, wherein a first push rod 4 and a second push rod 5 which are in rod shapes are arranged between the driving member 1 and the brake lining 2, one ends of the first push rod 4 and the second push rod 5 are in transmission connection with the driving member 1 through a synchronous transmission structure, and the other ends of the first push rod 4 and the second push rod 5 are fixedly connected with a long plate-shaped synchronous member 11. Meanwhile, the outer sides of one ends of the push rod I4 and the push rod II 5, which are used for being connected with the synchronizing piece 11, are respectively sleeved and axially fixed with annular push plates 20, the outer end surfaces of the two push plates 20 are opposite to the brake linings 2, and the brake linings 2 are connected to the bracket 21. The outer end surface of the push disc 20 protrudes out of the end surfaces of the outer ends of the synchronizing piece 11 and the push rods I4 and II 5, and is used for moving along with the push rods I4 and II 5 and pushing out the brake lining 2. In this embodiment, the driving element 1 includes a motor and a reducer 16 connected to the output end of the motor in a transmission manner, and an overload protection mechanism is further connected between the reducer 16 and the motor, where the motor specifically may be a motor with a braking function, i.e. a braking motor; the pushing rod I4 and the pushing rod II 5 can be synchronously pushed out or synchronously retracted under the action of the driving piece 1, the synchronous transmission structure and the synchronous piece 11.
Specifically, the synchronous transmission structure comprises a driving gear 12, a first nut 13 and a second nut 14, wherein the first pushing rod 4 and the second pushing rod 5 are all threaded rods, the first nut 13 is in threaded connection with the first pushing rod 4, and the second nut 14 is in threaded connection with the second pushing rod 5. The driving gear 12 is sleeved on the outer side of the output shaft of the speed reducer 16 and fixed with the output shaft, a plurality of transmission teeth are arranged on the outer side of the first nut 13 and the outer side of the second nut 14, the first nut 13 is in transmission connection with the driving gear 12 through the transmission teeth on the outer side, and the second nut 14 is in transmission connection with the driving gear 12 through the transmission teeth on the outer side. In this embodiment, a transition gear 17 is further meshed with the driving gear 12, a ring-shaped driven gear 18 is sleeved on the outer side of the first nut 13, the driven gear 18 is connected with the first nut 13 through a flat key, a ring-shaped driven gear 19 is sleeved on the outer side of the second nut 14, the driven gear 19 is connected with the second nut 14 through a flat key, and the driven gear 18 and the driven gear 19 are identical in specification and are meshed with the transition gear 17. If necessary, the transmission structure at the driving gear 12 can also adopt straight teeth, helical teeth or worm gear and worm gear transmission structures.
The first pushing rod 4 and the second pushing rod 5 are used for being connected with the synchronizing piece 11, one end of the first pushing rod is provided with a first connecting part and a second connecting part respectively, the sections of the first connecting part and the second connecting part are non-circular, the synchronizing piece 11 is provided with a first through hole and a second through hole in a penetrating mode, the section of the first through hole is matched with the section of the first pushing rod 4, the first pushing rod 4 penetrates into the first through hole, the section of the second through hole is matched with the section of the second pushing rod 5, the second pushing rod 5 penetrates into the second through hole, and the first pushing rod 4 and the second pushing rod 5 are axially fixed with the synchronizing piece 11 through the connecting piece 15 respectively. In the embodiment, the sections of the pushing rod I4 and the pushing rod II 5 are square, the through hole I and the through hole II are square holes, a retaining shoulder I is arranged on the outer side of the pushing rod I4, the connecting piece 15 is a clamping spring fixed on the outer side of the pushing rod I4, and the synchronizing piece 11 is fixed between the retaining shoulder I and the clamping spring; the connection structure of the pushing rod two 5 and the synchronizing piece 11 is the same as the connection structure of the pushing rod one 4 and the synchronizing piece 11, and will not be described again here.
As shown in fig. 2, the electric brake further comprises a pressure sensor 6, a wear sensor 10, a controller 7 and a prompt module 9, wherein the pressure sensor 6, the wear sensor 10 and the prompt module 9 are all connected with the controller 7. The number of the pressure sensors 6 is two, and the pressure sensors 6 are annular, are respectively sleeved on the push rod I4 and the push rod II 5 and respectively opposite to the positions of the nut I13 and the nut II 14, and are used for respectively detecting the braking force applied by the push rod I4 and the push rod II 5 to the brake lining 2 and sending braking force information to the controller 7; the wear sensor 10 is capable of detecting the amount of wear of the brake lining 2 and sending a wear signal to the controller 7; the controller 7 is an ECU, and can receive and process the above information, and send corresponding control signals to the motor to control the driving force output by the driving member 1 or send corresponding prompt signals to the prompt module 9 to prompt information.
During braking, the electric brake outputs power through the motor, the power is transmitted to the driving gear 12 through the speed reducer 16, and the first nut 13 and the second nut 14 are driven to synchronously rotate through the transition gear 17, the first driven gear 18 and the second driven gear 19. At this time, because one ends of the push rod one 4 and the push rod two 5 are fixedly connected with the synchronizing piece 11, the push rod one 4 and the push rod two 5 cannot rotate, in the process of rotating the nut one 13 and the nut two 14, the push rod one 4 and the push rod two 5 push out or retract along the axis of the push rod one and the push rod two 5, so that circumferential rotation is converted into linear motion, the push disc 20 is pushed to move, and the push disc 20 pushes the brake lining 2 to abut against the brake disc 3, so that braking is realized. Conversely, the motor reverses to drive the push rod I4 and the push rod II 5 to reversely retract, and the braking is released.
In the braking process, when the push rod I4 and the push rod II 5 drive the brake linings 2 to lean against the brake disc 3 through the push disc 20 respectively, the push rod I4 and the push rod II 5 are subjected to reaction force and act on the nut I13 and the nut II 14, the nut I13 and the nut II 14 apply force to the two pressure sensors 6 respectively, so that the pressure sensors 6 detect braking force applied by the push rod I4 and the push rod II 5 and send braking force signals to the controller 7, the controller 7 compares the braking force signals with preset braking force values, and accordingly sends corresponding control signals to the motor, and the driving force of the motor is adjusted so that the output braking force meets the requirement.
When the wear of the brake lining 2 reaches the limit value, the controller 7 sends a prompt signal to the prompt module 9 for prompting the user to pay attention so as to facilitate the user to replace the brake lining 2 in time and ensure the braking effect.
In addition, the output shaft of the motor is also provided with an adjusting head for manually driving the motor to rotate, and the adjusting head extends out from the rear end of the motor shell of the motor. Here, set up one and stretch out the adjustment head of motor casing at the motor rear end, the effect is when the motor can't be automatic when just reversing because of outage or other trouble, and this adjustment head of manual operation is carried out artifical interim emergent rotating electrical machines output shaft to realize relieving service braking, parking braking, adjustment braking clearance or change function such as friction disc. The cross section of the adjusting head can be round, square, triangle, tooth form, polygon or the side edge is provided with a rotation preventing structure such as a rotation preventing hole, or the adjusting head is provided with a concave part.
In addition to the above technical scheme, the electric brake may further include a third push rod, the third push rod and the first push rod 4 are disposed on the same side of the synchronizing member 11, one end of the third push rod is in transmission connection with the driving member 1 through the synchronous transmission structure, the other end of the third push rod is in fixed connection with the synchronizing member 11, and the third push rod can be driven by the driving member 1to push out the synchronizing member 11. And the synchronous transmission structure can also adopt another scheme: the electric brake can comprise a shell, wherein a first installation cavity and a second installation cavity which are columnar are arranged in the shell, a first push rod 4 and a second push rod 5 are respectively arranged in the first installation cavity and the second installation cavity, the driving piece 1 is an air cylinder, the synchronous transmission structure comprises a first connecting rod arranged between the first push rod 4 and the outer end of a piston rod of the air cylinder and a second connecting rod arranged between the second push rod 5 and the outer end of the piston rod of the air cylinder, two ends of the first connecting rod are respectively hinged with the first push rod 4 and the outer end of the piston rod of the air cylinder, and two ends of the second connecting rod are respectively hinged with the second push rod 5 and the outer end of the piston rod of the air cylinder.
The specific embodiments described herein are offered by way of example only to illustrate the spirit of the invention. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Claims (8)
1. An electric brake comprises a driving piece (1), a brake lining (2), a brake disc (3) and a first push rod (4) arranged between the driving piece (1) and the brake lining (2), and is characterized in that a second push rod (5) is further arranged between the driving piece (1) and the brake lining (2), the first push rod (4) and the second push rod (5) are in transmission connection with the driving piece (1), the first push rod (4) and the second push rod (5) can drive the brake lining (2) to abut against the brake disc (3) under the driving of the driving piece (1), the electric brake further comprises two pressure sensors (6) and a controller (7), the two pressure sensors (6) can respectively detect the braking force applied by the first push rod (4) and the second push rod (5) to the brake lining (2) and send braking force information to the controller (7), the controller (7) can receive the information of the pressure sensors (6) and control the first push rod (4) to drive the brake lining (2) to abut against the brake disc (3), the electric brake also comprises a synchronous driving force output structure and a synchronous driving piece (11) which is connected with one end of the driving piece (1) through the transmission structure, the other end of the push rod I (4) and the other end of the push rod II (5) are both fixedly connected with the synchronous piece (11), the push rod I (4) and the push rod II (5) can synchronously push out and drive the brake lining (2) to move under the action of the driving piece (1) and the synchronous transmission structure, the driving piece (1) comprises a motor, the synchronous transmission structure comprises a driving gear (12), a nut I (13) and a nut II (14), the push rod I (4) and the push rod II (5) are both threaded rods, the nut I (13) is in threaded connection with the push rod I (4), the nut II (14) is in threaded connection with the push rod II (5), the driving gear (12) is in transmission connection with an output shaft of the motor, a plurality of transmission teeth are respectively arranged on the outer side of the nut I (13) and the outer side of the nut II (14), the nut I (13) is in transmission connection with the driving gear (12), the nut II (14) is in transmission connection with the driving gear (12) through the transmission teeth on the outer side, and when the nut II (14) is in pressure contact with the brake lining (4) and the brake lining (4) is pressed, the first nut (13) and the second nut (14) can respectively apply acting force to the two pressure sensors (6).
2. An electric brake according to claim 1, characterized in that the electric brake further comprises a warning module (9) and a wear sensor (10) capable of detecting the amount of wear of said brake lining (2), said wear sensor (10) and said warning module (9) being both connected to said controller (7) and the wear sensor (10) being capable of sending wear information to said controller (7), said controller (7) being capable of receiving wear information and sending corresponding warning information to said warning module (9).
3. An electric brake according to claim 1, characterized in that the transmission ratio between the driving gear (12) and the first nut (13) and the transmission ratio between the driving gear (12) and the second nut (14) are equal.
4. An electric brake according to claim 1 or 3, wherein the first push rod (4) has a first connecting portion at one end for connecting with the synchronizing member (11), the second push rod (5) has a second connecting portion at one end for connecting with the synchronizing member (11), the synchronizing member (11) is provided with a first through hole and a second through hole in a penetrating manner, the first through hole has a cross-sectional shape matching the first connecting portion, the first connecting portion penetrates into the first through hole and is fixed to the synchronizing member (11) in a circumferential direction, the second through hole has a cross-sectional shape matching the second connecting portion, the second connecting portion penetrates into the second through hole and is fixed to the synchronizing member (11) in a circumferential direction, and the first push rod (4) and the second push rod (5) are fixed to the synchronizing member (11) in an axial direction through the connecting member (15) respectively.
5. An electric brake according to claim 1 or 3, characterized in that the driving member (1) further comprises a speed reducer (16) in driving connection with the output shaft of the motor, and the driving gear (12) is sleeved outside the output shaft of the speed reducer (16) and fixedly connected with the output shaft.
6. An electric brake according to claim 1 or 3, characterized in that the electric brake further comprises a third push rod, which is arranged on the same side of the synchronizing member (11) as the first push rod (4), one end of the third push rod is in transmission connection with the driving member (1) through the synchronizing transmission structure, the other end of the third push rod is fixedly connected with the synchronizing member (11), and the third push rod can be driven by the driving member (1) to push out the synchronizing member (11).
7. An electric brake according to claim 1, characterized in that the outside of the push rod one (4) and the push rod two (5) are respectively sleeved and axially fixed with annular push discs (20), two of the push discs (20) are opposite to the brake lining (2) and the two push discs (20) can abut against the brake lining (2) and push the brake lining (2) against the brake disc (3).
8. An electric brake according to claim 1, wherein the output shaft of the motor is further provided with an adjustment head for manual driving, and the adjustment head extends from the rear end of the motor housing of the motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710763690.XA CN107542817B (en) | 2017-08-30 | 2017-08-30 | Electric brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710763690.XA CN107542817B (en) | 2017-08-30 | 2017-08-30 | Electric brake |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107542817A CN107542817A (en) | 2018-01-05 |
| CN107542817B true CN107542817B (en) | 2024-05-14 |
Family
ID=60958357
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| CN111376880B (en) * | 2018-12-29 | 2023-06-13 | 比亚迪股份有限公司 | Electromechanical braking system for railway vehicle, control method of electromechanical braking system and railway vehicle |
| CN112483565A (en) * | 2020-12-14 | 2021-03-12 | 安徽创新电磁离合器有限公司 | Wind-powered electricity generation yaw motor brake |
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