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CN-121973745-A - Electromechanical braking device and vehicle

CN121973745ACN 121973745 ACN121973745 ACN 121973745ACN-121973745-A

Abstract

The application discloses an electromechanical brake device and a vehicle, wherein the electromechanical brake device comprises a brake disc, a bracket, a clamp body, a linear motion module, a driving module and a driving module, wherein the bracket is used for being fixedly installed with a frame, the clamp body is arranged on the brake disc in a crossing mode and is in floating connection with the bracket along the axial direction of the brake disc through a guide mechanism module, the linear motion module is fixedly installed on the clamp body through a first fastening assembly, the linear motion module comprises a flange cylinder sleeve for bearing axial reaction force generated during braking, a screw rod and a thrust bearing are installed inside the flange cylinder sleeve, the driving module is fixedly connected with the flange cylinder sleeve and the clamp body through a second fastening assembly, and the driving module is in driving connection with the screw rod through an internal gear transmission mechanism and is used for outputting rotary motion. According to the application, the independent flange cylinder sleeve bears the axial force, and the linear motion module and the driving module are connected with the clamp body through the fastening assembly, so that the axial clamping force is borne by the fastening assembly, the requirement on the strength of the clamp body material is reduced, and the lightweight design is realized by adopting a lightweight material.

Inventors

  • QIAN FEIFEI
  • HOU YU
  • ZHANG YUCHEN
  • PAN LICHENG
  • Jin Shacheng
  • SUN YINXIAN
  • GU RAN
  • Sheng Linwei

Assignees

  • 中车戚墅堰机车车辆工艺研究所股份有限公司

Dates

Publication Date
20260505
Application Date
20260327

Claims (14)

  1. 1. An electromechanical braking device (100), characterized by comprising: A brake disc (1); The bracket (2) is used for being fixedly installed with the frame; The caliper body (3) is arranged on the brake disc (1) in a straddling manner and is in floating connection with the bracket (2) along the axial direction of the brake disc (1) through the guide mechanism module (4); A linear motion module (5) fixedly mounted on the caliper body (3) through a first fastening assembly, wherein the linear motion module (5) comprises a flange cylinder sleeve (56) for bearing axial reaction force generated during braking, a screw rod (53) and a thrust bearing (54) mounted inside the flange cylinder sleeve (56), and The driving module (6) is fixedly connected with the flange cylinder sleeve (56) and the clamp body (3) through a second fastening assembly, and the driving module (6) is in driving connection with the screw rod through an internal gear transmission mechanism (63) and is used for outputting rotary motion.
  2. 2. The electromechanical brake apparatus (100) according to claim 1, wherein the flanged cylinder sleeve (56) comprises a mounting plate and a sleeve portion disposed on a first side of the mounting plate, the mounting plate being provided with a first central hole through which the lead screw (53) passes; The mounting plate is provided with a first bolt through hole (561) for the first fastening component to pass through and a second bolt through hole (562) for the second fastening component to pass through, and a first positioning hole (563) for positioning circumferentially with the clamp body (3) and a second positioning hole (564) for positioning circumferentially with the driving module (6).
  3. 3. The electromechanical brake device (100) according to claim 2, wherein the second side of the mounting plate is provided with a boss having a second central aperture coaxially arranged with the first central aperture, the second central aperture having a smaller diameter than the first central aperture; a groove is formed in the end face, far away from the mounting plate, of the protruding portion, and a spring (58) and a gasket (59) are arranged in the groove; The second positioning hole (564) is disposed on an end surface of the protruding portion and is located at an outer periphery of the groove.
  4. 4. An electromechanical brake apparatus (100) according to claim 3, characterised in that the side wall of the sleeve portion is provided with a keyway (566) extending in its axial direction; the screw rod (53) is provided with an anti-rotation key (52), and the anti-rotation key (52) is in sliding fit with the key groove (566) and is used for limiting circumferential rotation of the screw rod (53) so as to enable rotary motion of the screw rod (53) to be converted into axial linear motion.
  5. 5. Electromechanical brake device (100) according to any of the claims 1 to 4, characterised in that the material strength of the caliper body (3) is lower than the material strength of the flanged cylinder sleeve (56); the flange cylinder sleeve (56) is made of alloy steel, and the clamp body (3) is made of aluminum alloy or carbon fiber composite material.
  6. 6. Electromechanical brake device (100) according to claim 5, characterised in that said caliper body (3) has an assembly hole for housing said brake disc (1), on the inner side wall of which a pressure-bearing boss (37) is provided; Sleeve holes (32) are formed in the side walls of the clamp bodies (3), and the sleeve holes (32) are communicated with the assembly holes and are used for accommodating sleeve parts of the linear motion modules (5).
  7. 7. The electromechanical brake apparatus (100) according to claim 6, characterized in that a mounting boss (33) protruding in a direction away from the fitting hole is provided around the opening of the sleeve hole (32); The mounting boss (33) is provided with an axial mounting surface which is attached to the end surface of the mounting plate, a first mounting through hole (331) which is used for the first fastening component to pass through is formed in the mounting surface, a second mounting through hole (332) which is used for the second fastening component to pass through is formed in the mounting surface, and a third positioning hole (333) which is arranged corresponding to the first positioning hole (563).
  8. 8. Electromechanical brake device (100) according to claim 1, characterised in that said caliper body (3) is provided with at least one lightening hole.
  9. 9. Electromechanical brake device (100) according to any of the claims 1-4, characterised in that at least one pin hole (31) is provided in the caliper body (3), which pin hole (31) is provided for mounting the guiding mechanism module (4) therein for a floating connection of the caliper body (3) with the support (2) via the guiding mechanism module (4).
  10. 10. Electromechanical braking device (100) according to claim 9, characterized in that said guiding mechanism module (4) comprises: The first guide assembly comprises a long pin shaft (431), a long bolt (441) and a long end cover (451), wherein the long pin shaft (431) is arranged in a long pin shaft hole (311) of the clamp body (3) in a penetrating mode, and two ends of the long pin shaft are fixedly connected with the bracket (2) through the long bolt (441) and are covered by the long end cover (451); The second guide assembly comprises a short pin shaft (432), a short bolt (442) and a short end cover (452), wherein the short pin shaft (432) is arranged in a short pin shaft hole (312) of the clamp body (3) in a penetrating mode, two ends of the short pin shaft (432) are fixedly connected with the bracket (2) through the short bolt (442), and the short pin shaft is covered by the short end cover (452); At least two first bushings (42) respectively arranged between the long pin (431) and the short pin (432) and the corresponding pin holes (31), and And the two first sealing rings (41) are respectively arranged between the ends of the pin shaft holes (31) of the long pin shaft (431) and the short pin shaft (432) and the corresponding long end cover (451) and short end cover (452).
  11. 11. The electromechanical brake device (100) according to claim 6, further comprising a brake lining module (7), the brake lining module (7) comprising: The force transmission plate (71) is arranged in the assembly hole of the clamp body (3), is positioned on the opposite side of the pressure-bearing boss (37) and is abutted with the end part of the screw rod (53) so as to uniformly transmit the axial thrust generated by the screw rod (53); A first brake lining (72) which is arranged on one axial side of the brake disc (1) and is connected to the force transmission plate (71) and is pressed against the brake disc (1) under the pushing of the force transmission plate (71), and And a second brake lining (73) which is arranged on the other axial side of the brake disc (1) and is supported on a pressure-bearing boss (37) of the caliper body (3).
  12. 12. The electromechanical brake device (100) according to claim 10, wherein the brake lining module (7) further comprises a securing assembly comprising: A fixed spring group (74) comprising a first fixed spring connected to the force transfer plate (71), a second fixed spring connected to the first brake pad (72), and a third fixed spring connected to the second brake pad (73), and And the fixed bracket (76) is fixedly arranged on the clamp body (3) or the bracket (2) and is connected with the fixed spring group (74).
  13. 13. Electromechanical braking device (100) according to claim 1, characterized in that said driving module (6) comprises: A housing assembly comprising a receiving cavity enclosed by a first housing (61) and a second housing (65); A drive motor (62) housed within the housing assembly; a gear transmission mechanism (63) which is accommodated in the shell component, is in driving connection with the output end of the driving motor (62), and is used for reducing the speed and increasing the torque of the rotation movement of the driving motor (62) and then transmitting the rotation movement to a screw rod (53) of the linear movement module (5), and A motor control board (66) housed within the housing assembly and electrically connected to the drive motor (62) for controlling movement of the drive motor (62).
  14. 14. A vehicle, characterized in that it comprises an electromechanical braking device (100) according to any one of claims 1 to 13.

Description

Electromechanical braking device and vehicle Technical Field The present application relates generally to the field of vehicle braking systems. More specifically, the application relates to an electromechanical brake device, and further, to a vehicle. Background With the development of the automobile industry to electric and intelligent, the weight reduction, cost reduction and multi-scene suitability of the vehicle core components are important in technical development. The electromechanical braking system has the advantages of quick response, low maintenance cost, high reliability and the like because hydraulic or pneumatic pipelines are not needed, and becomes an important development direction of the next-generation braking system. In the existing electromechanical brake device, the brake caliper body is generally designed in an integrated structure. The structure directly acts the reverse acting force generated by pushing the brake lining by the screw rod on the annular contact surface of the inner cavity of the caliper body, and the internal material bears huge tensile stress and alternating load, so that the caliper body material is required to be made of high-strength steel materials to meet the requirements of strength and rigidity. However, the integrated structure has the following technical problems that the reverse acting force generated by pushing the brake lining by the screw rod directly acts on the annular contact surface of the inner cavity of the caliper body, so that the caliper body is required to be made of high-strength steel materials to meet the requirements of strength and rigidity, the density of the steel materials is high, the whole weight of the brake device is large, and the light-weight requirement of a chassis is difficult to meet. In view of the foregoing, there is a need for an electromechanical brake apparatus and a vehicle solution that can achieve multiple objectives of light weight, low cost, easy maintenance, and high suitability while ensuring excellent braking performance. Disclosure of Invention In order to solve at least one or more of the technical problems mentioned above, the present application proposes, in various aspects, a lightweight, low-cost, easy-to-maintain and highly adaptable electromechanical brake device and vehicle solution. In a first aspect, the application provides an electromechanical brake device, which comprises a brake disc, a bracket, a clamp body, a linear motion module, a screw rod and a thrust bearing, wherein the bracket is used for being fixedly installed with a frame, the clamp body is arranged on the brake disc in a crossing mode and is in floating connection with the bracket along the axial direction of the brake disc through a guide mechanism module, the linear motion module is fixedly installed on the clamp body through a first fastening assembly, the linear motion module comprises a flange cylinder sleeve for bearing axial reaction force generated during braking, the screw rod and the thrust bearing are installed inside the flange cylinder sleeve, the drive module is fixedly connected with the flange cylinder sleeve and the clamp body through a second fastening assembly, and the drive module is in driving connection with the screw rod through an internal gear transmission mechanism and is used for outputting rotary motion. In some embodiments, the flange cylinder sleeve comprises a mounting plate and a sleeve part arranged on a first side of the mounting plate, a first central hole for the screw rod to pass through is formed in the mounting plate, a first through hole for the first fastening component to pass through and a second bolt through hole for the second fastening component to pass through are formed in the mounting plate, and a first positioning hole for circumferentially positioning the clamp body and a second positioning hole for circumferentially positioning the drive module are formed in the mounting plate. In some embodiments, the second side of the mounting plate is provided with a protruding part, the protruding part is provided with a second central hole which is coaxial with the first central hole, the diameter of the second central hole is smaller than that of the first central hole, the end face of the protruding part far away from the mounting plate is provided with a groove, a spring and a gasket are arranged in the groove, and the second positioning hole is arranged on the end face of the protruding part and is located on the periphery of the groove. In some embodiments, the side wall of the sleeve part is provided with a key groove extending along the axial direction of the sleeve part, and the screw rod is provided with an anti-rotation key which is in sliding fit with the key groove and used for limiting the circumferential rotation of the screw rod so as to convert the rotary motion of the screw rod into axial linear motion. In some embodiments, the clamp body is made of alloy steel, and the clamp body