A brake transmission structure and vehicle of EMB system

Abstract

The utility model discloses a brake transmission structure of an EMB system, including a power device and an intermediate transmission structure, wherein the power device includes a driving motor and a worm connected to the power output shaft end of the driving motor; the intermediate transmission structure includes a worm wheel and a ball screw structure, wherein the ball screw structure includes a lead screw and a nut threadedly sleeved on the lead screw; the worm wheel meshes with the worm, the worm wheel is fixedly connected to the nut, the lead screw is rotationally connected to a brake member through a connecting rod, and the nut drives the brake member to move through the lead screw; an anti-self-rotation structure is provided on the lead screw. The brake transmission structure of the EMB system of the utility model occupies a small space, has reliable transmission, and is simple in structure. The utility model also discloses a vehicle.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle braking, in particular to a braking transmission structure of an EMB system and a vehicle. Background Art

[0002] At present, the unmanned container trucks in ports have complied with the trend of a new round of scientific and technological revolution and industrial transformation, and play an important role in the transportation of containers in major ports. Unmanned container trucks are referred to as unmanned container trucks. The braking system is an important part of unmanned container trucks, and the transmission mechanism is the transmission element of the braking system to implement the braking force. Its performance directly affects the safety performance of unmanned container trucks.

[0003] At present, the braking systems used in unmanned container trucks include hydraulic braking systems and pneumatic braking systems. After a long period of development, the hydraulic braking system has become a very mature technology and has been widely used. However, there are some problems with the hydraulic braking system, such as relatively slow braking, complex mechanical structure, difficult layout matching, and environmental pollution of brake fluid. Traditional pneumatic braking systems have the problem of occupying a large space due to the presence of compressors, brake oil tanks and air pipelines. The electronic mechanical braking (EMB) system can control the braking force of the wheels and can significantly improve the braking performance of the vehicle.

[0004] In summary, how to provide a braking transmission structure of an EMB system that occupies a small space, has reliable transmission and a simple structure has become a technical problem that needs to be solved urgently by those skilled in the art. Utility Model Content

[0005] In view of this, the utility model provides a brake transmission structure of an EMB system, which occupies a small space, has reliable transmission and a simple structure.

[0006] The utility model also provides a vehicle.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] A brake transmission structure of an EMB system, comprising:

[0009] A power device, comprising a drive motor and a worm connected to the power output shaft end of the drive motor;

[0010] An intermediate transmission structure, comprising a worm gear and a ball screw structure, wherein the ball screw structure comprises a screw and a nut threadedly sleeved on the screw;

[0011] The worm wheel is meshed with the worm, the worm wheel is fixedly connected to the nut, the lead screw is rotatably connected to the brake member via a connecting rod, and the nut drives the brake member to move via the lead screw; an anti-rotation structure is provided on the lead screw.

[0012] Optionally, the intermediate transmission structure also includes a worm gear support seat, which is arranged at one end of the nut, and a bearing support seat is arranged at the other end of the nut, and the worm gear support seat, the nut and the bearing support seat are connected together by bolts.

[0013] Optionally, the worm gear support seat comprises an integrally arranged worm gear support section and a bearing support section, the worm gear support section is sleeved on the outer side of the nut, and the bearing support section is sleeved on the outer side of the lead screw;

[0014] The worm wheel is mounted on the worm wheel support section, the bearing support section is connected to a first bearing, and the bearing support seat is connected to a second bearing.

[0015] Optionally, a first connecting flange is provided on the nut, a first connecting through hole is provided on the first connecting flange, a first connecting threaded hole is provided on the end of the worm gear support seat close to the first connecting flange, a second connecting flange is provided on the end of the bearing support seat close to the first connecting flange, and a second connecting through hole is provided on the second connecting flange;

[0016] The first connecting through hole, the first connecting threaded hole and the second connecting through hole are arranged correspondingly, and the bolt passes through the second connecting through hole and the first connecting through hole in sequence and then is connected to the first connecting threaded hole.

[0017] Optionally, a first oil-free bushing is provided at one end of the lead screw, and a second oil-free bushing is provided at the other end.

[0018] Optionally, the anti-rotation structure is an anti-rotation limit block, one end of the lead screw is connected to the connecting rod, and the other end is provided with the anti-rotation limit block, and the anti-rotation limit block is slidably connected to the slide groove of the brake outer shell of the brake transmission structure along the axial direction of the lead screw;

[0019] The anti-rotation limit block is provided with at least one limit plane.

[0020] Optionally, a ball head rod end joint bearing is provided between the lead screw and the connecting rod, one end of the ball head rod end joint bearing is connected to the lead screw, and the other end is connected to the connecting rod.

[0021] Optionally, the connecting rod comprises an integrally arranged connecting head and a connecting arm, the connecting head comprises a connecting threaded rod, and the barrel end of the ball head rod end joint bearing is threadedly connected to the connecting threaded rod;

[0022] The connecting arm is rotatably connected to the braking member.

[0023] Optionally, the worm is connected to the power output shaft of the drive motor via a coupling.

[0024] It can be seen from the above technical scheme that the brake transmission structure of the EMB system provided by the utility model includes a power device and an intermediate transmission structure, the driving motor of the power device drives the worm to rotate, the worm drives the worm wheel of the intermediate transmission structure to rotate, and the worm wheel drives the screw of the ball screw structure to move linearly, thereby pulling the brake member to move. The brake transmission structure of the EMB system of the utility model is applied to the transmission of braking force of the electronic mechanical brake system, realizes the vehicle braking of the EMB system, and can significantly improve the braking performance of the automobile. The brake transmission structure of the EMB system of the utility model adopts a worm gear structure to transmit the power of the drive motor to the ball screw structure for braking, and the transmission is reliable. Compared with the traditional pneumatic brake, the structure is compact and occupies less space, so that the layout of the brake transmission structure is more convenient and reasonable, and can be integrated with other electronic control systems of the automobile. The driving brake transmission mechanism uses electrical signals as the information transmission medium, eliminates the use of all brake pipes and hydraulic oil, improves the system response speed, simplifies the structure, and is easy to arrange and assemble. The drive motor replaces the hydraulic pump to complete the relevant driving operations of the brake, with high precision control, short reaction time, and high braking efficiency. At the same time, since hydraulic braking is eliminated, there is no risk of brake fluid leakage, which greatly reduces pollution to the environment.

[0025] The utility model also provides a vehicle, on which a brake transmission structure is arranged, and the brake transmission structure is the brake transmission structure of the EMB system mentioned above. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 A schematic structural diagram of a brake transmission structure of an EMB system provided by an embodiment of the utility model from an angle;

[0028] Figure 2 A schematic structural diagram of the brake transmission structure of the EMB system provided by an embodiment of the utility model from another angle;

[0029] Figure 3A structural schematic diagram of a braking transmission structure of an EMB system provided by an embodiment of the utility model from another angle;

[0030] Figure 4 A schematic cross-sectional view of an intermediate transmission structure provided by an embodiment of the utility model;

[0031] Figure 5 A schematic diagram of the structure of a ball screw structure provided in an embodiment of the utility model;

[0032] Figure 6 A schematic structural diagram of a ball head rod end joint bearing provided in an embodiment of the utility model;

[0033] Figure 7 A schematic structural diagram of a connecting rod provided by an embodiment of the utility model at an angle;

[0034] Figure 8 A schematic structural diagram of a connecting rod provided by an embodiment of the utility model from another angle;

[0035] Fig. 9 A schematic structural diagram of the connection between the brake transmission structure and the brake arm of the EMB system provided in an embodiment of the utility model.

[0036] in:

[0037] 1- driving motor;

[0038] 2-Coupling;

[0039] 3- Worm;

[0040] 4- Anti-rotation limit block;

[0041] 5-First oil-free bushing;

[0042] 6-Ball bearing;

[0043] 7- first bearing;

[0044] 8-worm gear;

[0045] 9-worm gear support seat;

[0046] 10-Ball screw structure;

[0047] 1001-screw nut; 1002-screw; 1003-first connecting flange; 1004-first connecting through hole;

[0048] 11-bearing support seat;

[0049] 1101 - second connecting through hole; 1102 - second connecting flange;

[0050] 12- second bearing;

[0051] 13- second oil-free bushing;

[0052] 14-ball head rod end joint bearing;

[0053] 15-connecting rod;

[0054] 1501-connecting arm; 1502-third connecting through hole; 1503-connecting threaded rod;

[0055] 16-shaft retaining ring;

[0056] 17-Brake arm. DETAILED DESCRIPTION

[0057] The utility model discloses a brake transmission structure of an EMB system, which occupies a small space, has reliable transmission and simple structure.

[0058] The utility model also discloses a vehicle.

[0059] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0060] See also Figures 1 to 9 The brake transmission structure of the EMB system of the utility model includes a power device and an intermediate transmission structure. The power device includes a driving motor 1 and a worm 3 connected to the power output shaft end of the driving motor 1. The intermediate transmission structure includes a worm wheel 8 and a ball screw structure 10, and the ball screw structure 10 includes a screw 1002 and a nut 1001 threadedly sleeved on the screw 1002. The worm wheel 8 is meshed with the worm 3, and the worm wheel 8 is fixedly connected with the nut 1001, so that when the worm 3 drives the worm wheel 8 to rotate, the worm wheel 8 drives the nut 1001 to rotate, the screw 1002 is rotationally connected to the brake member through the connecting rod 15, and the nut 1001 drives the brake member to move through the screw 1002.

[0061] Among them, an anti-rotation structure is provided on the lead screw 1002 to prevent the lead screw 1002 from rotating with the rotation of the nut 1001. The rotation of the nut 1001 drives the lead screw 1002 to reciprocate linearly, thereby driving the brake member to switch between the braking state and the non-braking state. The brake transmission structure of the EMB system of the utility model adopts the meshing transmission of the worm wheel 8 and the worm 3 to realize the power transmission of the power device and the intermediate transmission structure. The worm gear has a large transmission ratio, and has the advantages of compact structure and small size under the same transmission ratio. The mutual meshing is linear contact, and the load-bearing capacity is large.

[0062] The driving motor 1 is fixedly connected to the axle housing, the intermediate transmission structure is arranged in the brake outer housing of the brake transmission structure of the utility model, and the brake outer housing is connected to the axle housing. The working state of the driving motor 1 is controlled by the controller.

[0063] The brake transmission structure of the EMB system of the utility model includes a power device and an intermediate transmission structure. The drive motor 1 of the power device drives the worm 3 to rotate, the worm 3 drives the worm wheel 8 of the intermediate transmission structure to rotate, and the worm wheel 8 drives the screw 1002 of the ball screw structure 10 to move linearly, thereby pulling the brake member to move. The brake transmission structure of the EMB system of the utility model is applied to the transmission of braking force of the electronic mechanical brake (EMB) system, realizes the vehicle braking of the EMB system, and can significantly improve the braking performance of the automobile. The brake transmission structure of the EMB system of the utility model adopts a worm gear structure to transmit the power of the drive motor 1 to the ball screw structure 10 for braking, and the transmission is reliable. Compared with the traditional pneumatic brake, the structure is compact and the space occupied is small, so that the layout of the brake transmission structure is more convenient and reasonable, and it can be integrated with other electronic control systems of the automobile. The service brake transmission mechanism uses electrical signals as the information transmission medium, eliminates the use of all brake pipes and hydraulic oil, improves the system response speed, simplifies the structure, and is easy to arrange and assemble. The driving motor 1 replaces the hydraulic pump to complete the related driving operation of the brake, with high precision control, short reaction time and high braking efficiency. At the same time, since the hydraulic brake is cancelled, there is no risk of brake fluid leakage, which greatly reduces the pollution to the environment.

[0064] In order to facilitate the support of the worm wheel 8, the intermediate transmission structure also includes a worm wheel support seat 9, which is arranged at one end of the nut 1001, and a bearing support seat 11 is arranged at the other end of the nut 1001. The worm wheel support seat 9, the nut 1001 and the bearing support seat 11 are connected together by bolts. The worm wheel 8 is installed on the worm wheel support seat 9, and one end of the worm wheel 8 is limited by the boss on the worm wheel support seat 9, and the other end is limited by the shaft retaining ring 16. A first bearing 7 is installed on the worm wheel support seat 9, and a second bearing 12 is installed on the bearing support seat 11. The first bearing 7 and the second bearing 12 form a supporting structure of the worm wheel support seat 9, the nut 1001 and the bearing support seat 11 that are supported and connected together, so as to facilitate the rotation of the nut 1001. It can be understood that the worm gear support seat 9 and the bearing support seat 11 are sleeved on the lead screw 1002, that is, the worm gear support seat 9 and the bearing support seat 11 are both provided with through holes arranged along the axial direction, and the two are sleeved on the lead screw 1002 through the through holes. Among them, the inner diameter of the through holes on the worm gear support seat 9 and the bearing support seat 11 is larger than the outer diameter of the lead screw 1002 to avoid interfering with the linear motion of the lead screw 1002, and the specific size of the through holes is set by those skilled in the art according to needs.

[0065] In one embodiment, the first bearing 7 and the second bearing 12 are tapered roller bearings, and the outer rings of the first bearing 7 and the second bearing 12 are interference fit with the brake housing to achieve fixed installation of the bearings. The first bearing 7 and the second bearing 12 are used in pairs and are symmetrically installed. They mainly bear the combined radial and axial loads dominated by axial force, and support and support the rotation and fixation of the matching connectors such as the worm wheel 8. The first bearing 7 is interference fit with the worm wheel support seat 9, and the second bearing 12 is interference fit with the bearing support seat 11.

[0066] Specifically, the worm gear support seat 9 includes an integrally arranged worm gear support section and a bearing support section, wherein the worm gear support section is sleeved on the outer side of the nut 1001. Figure 4 As shown, the bearing support section is sleeved on the outer side of the lead screw 1002, that is, the through hole on the worm gear support seat 9 is a stepped hole. The worm wheel 8 is mounted on the worm gear support section, and the bearing support section is connected to the first bearing 7. In order to prevent the worm wheel 8 and the worm gear support seat 9 from rotating relative to each other in the circumferential direction, the two are connected by a spline.

[0067] In order to facilitate the connection between the worm gear support seat 9 and the bearing support seat 11, a first connecting flange 1003 is provided on the nut 1001. Figure 4 and Figure 5 As shown, the first connecting flange 1003 is provided with a first connecting through hole 1004, referring to Figure 5 The end of the worm gear support seat 9 close to the first connection flange 1003 is provided with a first connection threaded hole, the end of the bearing support seat 11 close to the first connection flange 1003 is provided with a second connection flange 1102, and the second connection flange 1102 is provided with a second connection through hole 1101, refer to Figure 1 and Figure 4 The first connecting through hole 1004, the first connecting threaded hole and the second connecting through hole 1101 are correspondingly arranged, and the corresponding arrangement here is a coaxial arrangement. The bolt passes through the second connecting through hole 1101 and the first connecting through hole 1004 in sequence and is threadedly connected in the first connecting threaded hole, so that the worm gear support seat 9, the nut 1001 and the bearing support seat 11 become an integrated structure.

[0068] In order to provide support and constraint during the reciprocating linear motion of the lead screw 1002 and to make the entire transmission more stable, a first oil-free bushing 5 is provided at one end of the lead screw 1002 and a second oil-free bushing 13 is provided at the other end.

[0069] In one embodiment, the anti-rotation structure connected to the end of the screw 1002 is an anti-rotation limit block 4. One end of the screw 1002 is connected to the connecting rod 15, and the other end is provided with an anti-rotation limit block 4. The anti-rotation limit block 4 is connected to the slide groove of the brake outer shell along the axial sliding of the screw 1002. The anti-rotation limit block 4 performs reciprocating linear motion in the slide groove of the brake outer shell, and the cross-section of the slide groove is set corresponding to the cross-section of the anti-rotation limit block 4. Among them, at least one limiting plane is set on the side of the anti-rotation limit block 4, thereby limiting the rotation of the screw 1002. Figure 1 As shown, in one embodiment, the anti-rotation limit block 4 is a rectangular rod, and in this embodiment, the limit planes are the four sides of the rectangular rod. In another embodiment, the anti-rotation limit block 4 is also a triangular prism rod, and in this embodiment, the limit planes are the three sides of the triangular prism rod. In another embodiment, the anti-rotation limit block 4 can also be a cylindrical rod, and in this embodiment, one or two planes are processed on the side of the cylindrical rod, and this plane is the limit plane.

[0070] In order to ensure the flexibility of the power transmission process, a ball head rod end joint bearing 14 is arranged between the lead screw 1002 and the connecting rod 15. Figure 6 As shown, the ball head rod end joint bearing 14 is a purchased part, and its structure is not described in detail here. One end of the ball head rod end joint bearing 14 is connected to the lead screw 1002, and the other end is connected to the connecting rod 15. Specifically, a second connecting threaded hole is provided at one end of the lead screw 1002 close to the ball head rod end joint bearing 14, and the second connecting threaded hole is threadedly connected to the rod end of the ball head rod end joint bearing 14. Among them, the hole depth of the second connecting threaded hole is greater than the rod length of the rod end of the ball head rod end joint bearing 14, so as to avoid affecting the threaded connection of the rod end of the ball head rod end joint bearing 14. The barrel end of the ball head rod end joint bearing 14 is threadedly connected to the connecting rod 15.

[0071] Further, the connecting rod 15 includes an integrally arranged connecting head and a connecting arm 1501, wherein the connecting head includes a connecting threaded rod 1503, and the barrel end of the ball head rod end joint bearing 14 is threadedly connected to the connecting threaded rod 1503. The connecting arm 1501 is rotatably connected to the brake member. In one embodiment, two connecting arms 1501 are provided, and the two connecting arms 1501 are arranged at intervals, and the ends of the two connecting arms 1501 are fixedly connected to the connecting head to form a Y-shaped connecting member. A third connecting through hole 1502 is provided on the connecting arm 1501, and the connecting arm 1501 is rotatably connected to the brake member through a connecting bolt connected in the third connecting through hole 1502.

[0072] Wherein, the brake member includes a brake arm 17 and a brake shoe, referring to Fig. 9The structures and connection relationship between the brake arm 17 and the brake shoe are prior art, and the present invention has not made any improvements, so they will not be described in detail. The connecting arm 1501 is rotatably connected to one end of the brake arm 17, and the other end of the brake arm 17 is rotatably connected to the brake shoe.

[0073] Specifically, the worm 3 is connected to the power output shaft of the drive motor 1 through the coupling 2. The coupling 2 transmits motion and torque, so that the power output shaft of the drive motor 1 rotates circumferentially together with the worm 3. It can also compensate for the offset between the two axes due to inaccurate manufacturing and installation, deformation during operation or thermal expansion, etc., mitigate impact and absorb vibration, and play a role in overload protection to achieve stable motion transmission. After the worm 3 is fixedly installed on the output shaft of the drive motor 1 through the coupling 2, the ball bearing 6 is interference-fitted to the end of the worm 3 away from the drive motor to improve the stability of the rotation of the worm 3.

[0074] The power transmission process of the brake transmission structure of the EMB system of the utility model is as follows: the drive motor 1 rotates in the clockwise direction, and the worm 3 fixed on the output shaft of the drive motor 1 is driven to rotate clockwise under the action of the output torque, and the worm 3 is meshed with the worm wheel 8, and the worm 3 drives the worm wheel 8 to rotate counterclockwise to achieve deceleration and torque increase, and at the same time, the worm wheel 8 drives the nut 1001 connected thereto to rotate counterclockwise. Since the anti-rotation limit block 4 limits the rotation of the lead screw 1002, the lead screw 1002 will move forward according to the rotation angle of the worm wheel 8 and follow the linear motion converted by the lead of the corresponding specification, and push the connecting rod 15 through the ball head rod end joint bearing 14, the connecting rod 15 pushes the brake arm 17, the brake arm 17 pushes the brake shoe, the brake shoe is opened by the thrust, and the friction plate on the brake shoe rubs against the rotating brake drum to achieve driving braking. When the drive motor 1 rotates counterclockwise, the lead screw 1002 will be pulled backward according to the rotation angle of the worm gear 8 and the linear motion converted by the lead of the corresponding specification, and the connecting rod 15 will be pulled through the ball head rod end joint bearing 14, the connecting rod 15 will pull the brake arm 17, the brake arm 17 will pull the brake shoe, the brake shoe is closed by the tension, and the friction plate on the brake shoe moves away from the rotating brake drum, thereby ending the service braking.

[0075] The brake transmission structure of the EMB system of the utility model abandons the compressor, brake oil tank and air pipeline components of the traditional pneumatic brake, thereby reducing the cost. The main components of the service brake transmission mechanism include a motor, a meshing worm gear structure and a ball screw structure. Compared with the traditional pneumatic brake, the structure is more compact, making the vehicle structure layout more convenient and reasonable, occupying less space and having a small curb weight. The brake transmission structure of the EMB system of the utility model is easy to integrate with other electronic control systems of the vehicle, and the service brake transmission structure uses electrical signals as the information transmission medium, eliminates the use of all brake pipelines and hydraulic oil, speeds up the system response speed, and replaces the hydraulic pump with a motor to complete the related drive of the brake, with high operating accuracy, short reaction time and high braking efficiency. At the same time, since a hydraulic pump is not used during braking, there is no risk of brake fluid leakage, which greatly reduces pollution to the environment.

[0076] The brake transmission structure of the EMB system of the utility model can be applied to unmanned container trucks as well as other types of vehicles, which is not limited here.

[0077] The utility model further discloses a vehicle, on which the brake transmission structure of the EMB system is arranged, and thus the vehicle has the advantages of the brake transmission structure of the EMB system, which will not be described in detail herein.

[0078] In the description of this solution, it should be understood that the terms "upper", "lower", "vertical", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this solution.

[0079] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of this solution, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0080] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0081] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A brake transmission structure of an EMB system, characterized in that: include: A power device, comprising a drive motor and a worm connected to the power output shaft end of the drive motor; An intermediate transmission structure, comprising a worm gear and a ball screw structure, wherein the ball screw structure comprises a screw and a nut threadedly sleeved on the screw; The worm wheel is meshed with the worm, the worm wheel is fixedly connected to the nut, the lead screw is rotatably connected to the brake member via a connecting rod, and the nut drives the brake member to move via the lead screw; an anti-rotation structure is provided on the lead screw.

2. The brake transmission structure of the EMB system according to claim 1, characterized in that: The intermediate transmission structure also includes a worm gear support seat, which is arranged at one end of the nut, and a bearing support seat is arranged at the other end of the nut. The worm gear support seat, the nut and the bearing support seat are connected together by bolts.

3. The brake transmission structure of the EMB system according to claim 2, characterized in that: The worm gear support seat comprises an integrally arranged worm gear support section and a bearing support section, wherein the worm gear support section is sleeved on the outer side of the nut, and the bearing support section is sleeved on the outer side of the lead screw; The worm wheel is mounted on the worm wheel support section, the bearing support section is connected to a first bearing, and the bearing support seat is connected to a second bearing.

4. The brake transmission structure of the EMB system according to claim 2, characterized in that: The nut is provided with a first connecting flange, the first connecting flange is provided with a first connecting through hole, the end of the worm gear support seat close to the first connecting flange is provided with a first connecting threaded hole, the end of the bearing support seat close to the first connecting flange is provided with a second connecting flange, the second connecting flange is provided with a second connecting through hole; The first connecting through hole, the first connecting threaded hole and the second connecting through hole are arranged correspondingly, and the bolt passes through the second connecting through hole and the first connecting through hole in sequence and then is connected to the first connecting threaded hole.

5. The brake transmission structure of the EMB system according to claim 1, characterized in that: A first oil-free bushing is arranged at one end of the lead screw, and a second oil-free bushing is arranged at the other end of the lead screw.

6. The brake transmission structure of the EMB system according to claim 1, characterized in that: The anti-rotation structure is an anti-rotation limit block, one end of the lead screw is connected to the connecting rod, and the other end is provided with the anti-rotation limit block, and the anti-rotation limit block is slidably connected to the slide groove of the brake outer shell of the brake transmission structure along the axial direction of the lead screw; The anti-rotation limit block is provided with at least one limit plane.

7. The brake transmission structure of the EMB system according to claim 2, characterized in that: A ball head rod end joint bearing is arranged between the lead screw and the connecting rod, one end of the ball head rod end joint bearing is connected to the lead screw, and the other end is connected to the connecting rod.

8. The brake transmission structure of the EMB system according to claim 7, characterized in that: The connecting rod comprises an integrally arranged connecting head and a connecting arm, the connecting head comprises a connecting threaded rod, and the barrel end of the ball head rod end joint bearing is threadedly connected to the connecting threaded rod; The connecting arm is rotatably connected to the braking member.

9. The brake transmission structure of the EMB system according to claim 1, characterized in that: The worm is connected to the power output shaft of the driving motor through a coupling.

10. A vehicle, wherein a brake transmission structure is provided on the vehicle, characterized in that: The braking transmission structure is the braking transmission structure of the EMB system according to any one of claims 1-9.

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