A running-in device for an adjuster in a gap self-adjusting mechanism

Abstract

The utility model provides a kind of running-in device for adjuster in gap self-adjusting mechanism, belong to mechanical technical field.It solves the problem of unable to effectively guarantee the coaxiality between main shaft, inner bush and transmission gear.It includes frame and tooling, frame is connected with support and frame is equipped with the driving motor that can drive support to move up and down, support seat is fixed below frame at support, tooling includes mounting seat connected on support seat and can move up and down and the limiting sleeve with internal thread, mounting seat is equipped with the mounting hole of T type, support seat is equipped with support spring below mounting seat at the place where mounting hole is, support is fixedly connected with torque output assembly, the lower end of torque output assembly has combination part, the bottom of support is equipped with top pressure part, the lower end surface of top pressure part is lower than combination part, mounting hole is below combination part.It has the coaxiality between main shaft, inner bush and transmission gear, ensure that the advantages such as slipping torque cannot have larger fluctuation can be well guaranteed.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical technology and relates to a break-in device for an adjuster in a gap self-adjusting mechanism. Background Technology

[0002] The brake clearance self-adjustment mechanism is a standard feature in existing disc brakes. It automatically adjusts the brake clearance to ensure that the brake pads maintain the required clearance with the brake disc even after prolonged use. The adjuster is the key factor enabling this automatic brake clearance adjustment mechanism.

[0003] For example, patent application number 201110188782.2 describes an adjuster for a gap self-adjusting mechanism in an automotive disc brake. It includes a main shaft and an inner bushing and a transmission gear sequentially sleeved on the main shaft. The inner bushing and the transmission gear are linked, and when the torque between them is too high, they can slip against each other. An adjusting sleeve is fitted on the outer side of the inner bushing, and a one-way clutch is provided between the adjusting sleeve and the inner bushing. The transmission gear and the main shaft are circumferentially fixed by a flat key. The contact between the transmission gear and the inner bushing is a conical contact, provided by a preload spring to keep them abutting and generating a certain frictional force. The gap self-adjusting mechanism in the automotive disc brake includes two threaded tubes respectively screwed onto two push rods. The outer surface of the threaded tubes has ring teeth. The gap self-adjusting mechanism also includes a pin connected to the power unit of the disc brake. This adjuster is positioned between two solenoids. The transmission gear meshes with the ring teeth on the outer side of the solenoids. When the adjuster starts working, the power unit drives the pawl, which in turn drives the adjusting sleeve to rotate forward. The adjusting sleeve, through a one-way clutch, drives the inner bushing to rotate synchronously in the forward direction. The inner bushing, through the friction between the conical surfaces, drives the transmission gear to rotate, which in turn drives the ring teeth to rotate. The ring teeth then drive the solenoids to rotate, and the solenoids, through a threaded drive, push the brake block assembly against the brake disc. After braking, the adjuster needs to reset. The power unit drives the pawl to rotate in the reverse direction, which in turn drives the adjusting sleeve to rotate in the opposite direction. Due to the one-way rotation characteristic of the one-way clutch, when the adjusting sleeve rotates in the reverse direction, the adjusting sleeve and the inner bushing spin freely. The pawl drives the adjusting sleeve to rotate until it returns to its initial state. The inner bushing and the transmission gear in this device are designed with conical contact. When the torque between the inner bushing and the transmission gear is too high, they can slip against each other, thus preventing them from seizing together. This gives the adjuster a self-protection function and improves its stability.

[0004] The inner bushing and drive gear are manufactured separately. After production, the conical surfaces between the inner bushing and drive gear need to be run-in. This is to ensure the fit between the two conical surfaces and to meet the actual working conditions. Currently, traditionally, the inner bushing and drive gear are run-in manually with tooling. However, this method does not involve the spindle, even though the inner bushing and drive gear are fitted onto the spindle in the product. This leads to a lack of coaxiality between the spindle, inner bushing, and drive gear during actual assembly, causing slippage torque fluctuations that exceed the theoretical design. Utility Model Content

[0005] The purpose of this invention is to address the aforementioned problems in the existing technology by proposing a break-in device for the adjuster in a gap self-adjusting mechanism, which solves the problem of not being able to effectively guarantee the coaxiality between the main shaft, inner bushing, and transmission gear.

[0006] The objective of this utility model can be achieved through the following technical solutions:

[0007] A break-in device for an adjuster in a gap self-adjusting mechanism includes a frame and a fixture. The frame is connected to a support and has a drive motor that can drive the support to move up and down. The frame has a support base fixed below the support. The fixture includes a mounting base connected to the support base and movable up and down, and a limiting sleeve with internal threads. The mounting base has a T-shaped mounting hole. A support spring is provided below the mounting base at the location of the mounting hole on the support base. A torque output component is fixedly connected to the support. The lower end of the torque output component has a connecting part. The bottom of the support has a pressing part, the lower end face of which is lower than the connecting part. The mounting hole is located below the connecting part.

[0008] In use, the spindle, inner bushing, and transmission gear of the self-adjusting mechanism are installed on the tooling to simulate actual assembly. Specifically, a thrust bearing is first placed in the larger portion of the mounting hole. Then, the spindle is passed through the mounting hole, and the shoulder of the spindle near its upper end rests against the thrust bearing. Next, the inner bushing is inserted from the lower end of the spindle into the smaller portion of the mounting hole, and a one-way bearing is placed between the inner bushing and the smaller portion of the mounting hole, again simulating actual product assembly. Then, the transmission gear is inserted from the lower end of the spindle, abutting against the inner bushing, and the transmission gear is engaged with the spindle via a flat key. Finally, the limiting sleeve is threaded onto the lower end of the spindle, abutting against the transmission gear. After the limiting sleeve is connected, the spindle, inner bushing, transmission gear, and mounting base are connected as a whole, with the upper end of the spindle protruding beyond the mounting base. The mounting base is then assembled onto the support base. Because a support spring is located below the mounting base at the mounting hole on the support base, and the transmission gear protrudes outside the mounting base, the transmission gear will abut against the upper end of the support spring after the mounting base is assembled onto the support base. Next, the break-in process begins according to the actual working conditions.

[0009] During the break-in period, the drive motor moves the bracket downwards. The bottom of the bracket presses against the mounting base, compressing the support spring and applying spring force to the transmission gear. This creates friction between the transmission gear and the inner bushing, similar to actual operation. Simultaneously, the torque output assembly inserts into the upper end of the spindle (the shape of the insertion part is designed according to the upper end of the spindle; if the upper end of the spindle is hexagonal, the insertion part has an internal hexagonal hole; if the upper end of the spindle has an internal hexagonal hole, the insertion part is hexagonal). Afterwards, the torque output assembly drives the spindle to rotate. The spindle, via a key, drives the transmission gear, while the inner bushing's rotation is restricted by a one-way bearing. This causes slippage between the transmission gear and the inner bushing, just as in actual operation. With the above settings, this running-in device can run in the spindle, inner bushing and transmission gear together, instead of just running in the inner bushing and transmission gear. This can ensure the coaxiality of the spindle, inner bushing and transmission gear during actual assembly, thus ensuring that the slippage torque will not fluctuate greatly in actual operation.

[0010] In the aforementioned break-in device for the adjuster in a gap self-adjustment mechanism, the torque output component includes a torque output motor, a drive shaft located below the torque output motor, and a torque sensor connected between the torque output motor and the drive shaft. The joint is located at the lower end of the drive shaft, and a pressure sensor is fixed inside the support base. The lower end of the support spring acts on the force-bearing part of the pressure sensor.

[0011] The lower end of the support spring acts on the force-bearing part of the pressure sensor. When the mounting base is pressed down by the bracket and the support spring is compressed, the pressure applied by the bracket to the mounting base will be detected by the pressure sensor. The detected pressure is the spring force that the support spring reacts on the transmission gear after being compressed.

[0012] During the break-in process, the combination of the drive motor and pressure sensor, as well as the combination of the torque output motor and torque sensor, can simulate actual working conditions. The pressure value detected by the pressure sensor is the spring force of the support spring acting on the transmission gear, while the torque sensor can monitor the slippage torque. This allows for continuous monitoring of the slippage torque within a set number of revolutions under a set spring force. Based on the obtained slippage torque fluctuation value, it can be determined whether the degree of break-in meets the actual working conditions. If it does not meet the design requirements, the break-in process is repeated until it is qualified.

[0013] In the aforementioned break-in device for the adjuster in a gap self-adjustment mechanism, the pressure sensor's force-bearing part is abutted against a spring seat, and the lower end of the supporting spring abuts against the spring seat.

[0014] By designing the spring seat, the support spring is less prone to tilting, ensuring that the pressure of the bracket top mounting seat can be detected more stably by the pressure sensor, thereby ensuring a more precise break-in process.

[0015] In the aforementioned break-in device for the adjuster in a gap self-adjustment mechanism, the upper end of the support spring is abutted against a support block, the upper end of the support block is provided with a clearance cavity, and the center area of ​​the bottom wall of the clearance cavity is provided with a through hole.

[0016] In practice, after the mounting base is installed on the support base, the transmission gear abuts against the support block, with the bottom of the transmission gear inserting into the clearance cavity of the support block, and the lower end of the main shaft passing through the through hole. With the lower end of the support spring abutting against the spring seat, a support block is placed against the upper end of the support spring. This provides better constraint on the support spring, ensuring it is less prone to tilting when compressed. Furthermore, the support block ensures that the spring force after compression acts more stably on the transmission gear.

[0017] In the aforementioned break-in device for the adjuster in a gap self-adjustment mechanism, the housing of the torque sensor is non-circular, and an anti-rotation block is fixed to the bracket. The anti-rotation block abuts against the side wall of the torque sensor housing to restrict its rotation.

[0018] The above settings prevent the torque sensor housing from rotating (this will not affect the normal operation of the internal detection components of the torque sensor). Preventing the torque sensor housing from rotating ensures that the signal wires will not become tangled, thus ensuring the accuracy of torque detection during the break-in process.

[0019] In the aforementioned break-in device for the adjuster in a gap self-adjustment mechanism, the support base includes a base plate and two support columns fixed on the base plate and arranged opposite to each other. The upper ends of the two support columns are provided with guide heads, and the mounting base is provided with two guide holes, with the two guide heads passing through the two guide holes respectively.

[0020] By setting guide heads at the upper ends of the two support columns of the support base and setting two guide holes on the mounting base accordingly, the mounting base can move up and down on the support base and can be easily removed from the support base to cooperate with the limiting sleeve to realize the assembly of the spindle, inner bushing and transmission gear in simulated actual use.

[0021] In the aforementioned break-in device for the adjuster in a gap self-adjustment mechanism, the support includes a frame, a block-shaped top pressing part is fixedly connected to the bottom of the frame by at least one connecting column, the top pressing part is provided with a clearance hole in the vertical direction, and the axis of the transmission shaft passes through the clearance hole.

[0022] After the spindle is installed on the mounting base, its upper end protrudes out of the mounting base. By setting a clearance hole in the vertical direction on the pressing part, the upper end of the spindle can be made to make way for the pressing part while pressing on the mounting base, so as to ensure that the joint at the lower end of the drive shaft can be inserted into the upper end of the spindle.

[0023] In the aforementioned break-in device for the adjuster in a gap self-adjustment mechanism, the frame is fixedly connected to a cooling tank, and the support base is fixedly connected inside the cooling tank.

[0024] During the break-in process, coolant is introduced into the cooling tank to cool the spindle, preventing damage to the spindle, inner bushing, and transmission gears due to excessively high temperatures.

[0025] In the aforementioned break-in device for the adjuster in a gap self-adjustment mechanism, the cooling tank side is provided with an inlet and an outlet, with the outlet being higher than the inlet.

[0026] Connect the inlet and outlet to pipes respectively. The coolant flows into the cooling tank from the inlet and out from the outlet, thus forming a circulation of coolant and ensuring the cooling effect.

[0027] Compared with existing technologies, the break-in device for the adjuster in the gap self-adjustment mechanism has the following advantages:

[0028] 1. By setting up the mounting base and the limit sleeve with internal thread, and combining it with the use of the support spring, this running-in device can run in the spindle, inner bushing and transmission gear together, instead of just running in the inner bushing and transmission gear. This can well ensure the coaxiality of the spindle, inner bushing and transmission gear during actual assembly, thereby ensuring that the slippage torque will not fluctuate greatly in actual operation.

[0029] 2. By combining the drive motor with the pressure sensor and the torque output motor with the torque sensor, the actual working conditions can be simulated. During the break-in process, the slippage torque within a set number of revolutions under a set spring force can be continuously monitored. The fluctuation value of the obtained slippage torque can be used to determine whether the degree of break-in can meet the actual working conditions. If it does not meet the design requirements, the break-in process will be repeated until it is qualified.

[0030] 3. By setting up a cooling tank and placing the workpiece inside, coolant can be introduced into the cooling tank to cool it down, preventing damage to the spindle, inner bushing, and transmission gears caused by excessively high temperatures during the break-in period. Attached Figure Description

[0031] Figure 1 This is a three-dimensional schematic diagram of the break-in device for the adjuster in the gap self-adjustment mechanism.

[0032] Figure 2 This is a three-dimensional schematic diagram of the break-in device for the adjuster in the gap self-adjustment mechanism after removing the cooling tank and part of the frame.

[0033] Figure 3 This is a schematic diagram showing the connection between the bracket and the torque output component.

[0034] Figure 4 This is a schematic diagram showing the fit between the support base and the tooling after the main shaft, inner bushing, and transmission gear are installed.

[0035] Figure 5 It is a sectional view of the support base and the tooling after the main shaft, inner bushing and transmission gear are installed.

[0036] Figure 6 It is a three-dimensional schematic diagram of the tooling after the main shaft, inner bushing and transmission gear are installed.

[0037] In the diagram, 1. Frame; 1a. Guide post; 2. Tooling; 3. Support; 3a. Frame body; 3a1. Flat plate; 3a2. Connecting post; 3b. Top pressing part; 3b1. Clearance hole; 3c. Connecting post; 4. Drive motor; 5. Torque output assembly; 5a. Torque output motor; 5b. Drive shaft; 5b1. Joint; 5c. Torque sensor; 6. Mounting base; 6a. Mounting hole; 6b. Guide hole; 7. Limiting device 8. Support seat; 8a. Base plate; 8b. Support column; 8b1. Guide head; 9. Support spring; 10. Positioning seat; 11. Anti-rotation block; 12. Pressure sensor; 13. Spring seat; 14. Support block; 14a. Relief cavity; 14b. Through hole; 15. Cooling tank; 16. Ball screw mechanism; 17. Main shaft; 18. Inner bushing; 19. Transmission gear; 20. Thrust bearing; 21. One-way bearing. Detailed Implementation

[0038] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0039] like Figures 1-6 As shown, a break-in device for an adjuster in a gap self-adjusting mechanism includes a frame 1 and a fixture 2. The frame 1 is connected to a bracket 3, and a drive motor 4 capable of driving the bracket 3 to move up and down is mounted on the frame 1. A torque output component 5 is fixed to the bracket 3. A support seat 8 is fixed to the frame 1 and is located below the bracket 3. The fixture 2 includes a mounting seat 6 connected to the support seat 8 and capable of moving up and down, and a limiting sleeve 7 with internal threads. The mounting seat 6 has a T-shaped mounting hole 6a, and a support spring 9 is provided on the support seat 8 below the mounting seat 6 at the location of the mounting hole 6a. The support seat 8 includes a base plate 8a and two support columns 8b, both fixed to the base plate 8a and arranged opposite to each other. The upper ends of the two support columns 8b are provided with guide heads 8b1, and the mounting seat 6 is provided with two guide holes 6b respectively, through which the two guide heads 8b1 pass. The lower end of the torque output assembly 5 has a connecting part 5b1, and the bottom of the bracket 3 is provided with a pressing part 3b. The lower end surface of the pressing part 3b is lower than the connecting part 5b1, and the mounting hole 6a is located below the connecting part 5b1.

[0040] like Figure 1 , Figure 2 and Figure 3As shown, specifically, the torque output assembly 5 includes a torque output motor 5a, a drive shaft 5b located below the torque output motor 5a, and a torque sensor 5c connecting the torque output motor 5a and the drive shaft 5b. The coupling part 5b1 is located at the lower end of the drive shaft 5b. The bracket 3 includes a frame 3a, and a pressing part 3b is block-shaped and fixedly connected to the bottom of the frame 3a by at least one connecting post 3c. The pressing part 3b has a clearance hole 3b1 in the vertical direction, and the axis of the drive shaft 5b passes through the clearance hole 3b1. A positioning seat 10 is fixed on the frame 1. The drive motor 4 and the frame 3a of the bracket 3 are engaged by a ball screw mechanism 16. The lower end of the screw in the ball screw mechanism 16 passes through the positioning seat 10 and the two are fixed together axially. A bearing is provided between the screw and the positioning seat 10. When the shaft of the drive motor 4 rotates, it drives the screw in the ball screw mechanism 16 to rotate. As the screw rotates, the ball screw mechanism 16 starts to work and drives the bracket 3 to start to move vertically. In this embodiment, the frame 3a includes two flat plates 3a1 and a connecting column 3a2 fixedly connected between the two flat plates 3a1. The torque output motor 5a is fixedly connected to the upper flat plate 3a1. The frame 1 has several guide columns 1a, each of which passes through the two flat plates 3a1. The outer shell of the torque sensor 5c is non-circular. An anti-rotation block 11 is fixedly connected to the connecting column 3a2. The anti-rotation block 11 abuts against the side wall of the outer shell of the torque sensor 5c to restrict its rotation (the restriction of its rotation here refers to restricting the rotation of the outer shell of the torque sensor 5c, which will not affect the normal operation of the internal detection part of the torque sensor 5c). Specifically, the torque sensor 5c can be a torque sensor of model D2-2477-P-50N.m from Shanghai Baoyiwei Company.

[0041] like Figure 4 and Figure 5 As shown, a pressure sensor 12 is fixed inside the support base 8. The force-bearing part of the pressure sensor 12 is located on its upper side. The lower end of the support spring 9 acts on the force-bearing part of the pressure sensor 12. Specifically, a spring seat 13 is provided against the force-bearing part of the pressure sensor 12, and the lower end of the support spring 9 abuts against the spring seat 13. The pressure sensor 12 can be a pressure sensor of model BCK-102-5000N from Henan Butzkes Co., Ltd. The upper end of the support spring 9 abuts against a support block 14. The upper end of the support block 14 is provided with a clearance cavity 14a, and the bottom wall of the clearance cavity 14a has a through hole 14b in the central area.

[0042] In use, the main shaft 17, inner bushing 18, and transmission gear 19 of the self-adjusting mechanism are installed on tooling 2 to simulate the actual assembly situation. Specifically, first, a thrust bearing 20 is placed in the larger part of the mounting hole 6a. Then, the main shaft 17 is passed through the mounting hole 6a and the shoulder of the main shaft 17 near the upper end abuts against the thrust bearing 20. Next, the inner bushing 18 is inserted from the lower end of the main shaft 17 into the smaller part of the mounting hole 6a. Similarly, simulating the actual assembly situation of the product, a one-way bearing 21 is placed between the inner bushing 18 and the smaller part of the mounting hole 6a. Then, the transmission gear 19 is inserted from the lower end of the main shaft 17 to abut against the inner bushing 18 and the transmission gear 19 is engaged with the main shaft 17 by a flat key. Finally, the limiting sleeve 7 is threaded to the lower end of the main shaft 17 and abuts against the transmission gear 19. After the limiting sleeve 7 is connected, the main shaft 17, inner bushing 18, transmission gear 19 and mounting base 6 are connected to form a whole (this state is as follows). Figure 6 As shown in the figure, the upper end of the spindle 17 protrudes from the mounting base 6. Then the mounting base 6 is assembled onto the support base 8, and the transmission gear 19 abuts against the support block 14. The bottom of the transmission gear 19 is inserted into the relief cavity 14a of the support block 14, and the lower end of the spindle 17 passes through the through hole 14b and begins to run in according to the actual working conditions.

[0043] During the break-in period, the drive motor 4 drives the bracket 3 to move downwards. The bottom pressing part 3b of the bracket 3 abuts against the mounting seat 6 and presses it down. This compresses the support spring 9 and applies spring force to the transmission gear 19, allowing friction to form between the transmission gear 19 and the inner bushing 18, just as in actual operation. Simultaneously, the coupling part 5b1 of the torque output component 5 is inserted into the upper end of the main shaft 17 (the shape of the coupling part 5b1 is designed according to the upper end of the main shaft 17; if the upper end of the main shaft 17 is hexagonal, the coupling part 5b1 is set with an internal hexagonal hole; if the upper end of the main shaft 17 has an internal hexagonal hole, the coupling part 5b1 is set with an external hexagonal shape). Afterwards, the torque output component 5 drives the main shaft 17 to rotate. The main shaft 17 drives the transmission gear 19 to rotate via a flat key, while the inner bushing 18 is restricted from rotation by the one-way bearing 21. Thus, the transmission gear 19 and the inner bushing 18 slip, just as in actual operation. With the above settings, the running-in device can run in the main shaft 17, inner bushing 18 and transmission gear 19 together, instead of just running in the inner bushing 18 and transmission gear 19. This can ensure the coaxiality of the main shaft 17, inner bushing 18 and transmission gear 19 during actual assembly, thereby ensuring that the slippage torque will not fluctuate greatly in actual operation.

[0044] Furthermore, during the break-in process, the actual working conditions can be simulated by combining the drive motor 4 with the pressure sensor 12 and the torque output motor 5a with the torque sensor 5c. The pressure value detected by the pressure sensor 12 is the spring force of the support spring 9 acting on the transmission gear 19, while the torque sensor 5c can monitor the slippage torque. This allows for continuous monitoring of the slippage torque within a set number of revolutions under a set spring force. Based on the obtained slippage torque fluctuation value, it can be determined whether the degree of break-in meets the actual working conditions. If it does not meet the design requirements, the break-in process is repeated until it is qualified.

[0045] Furthermore, such as Figure 1 As shown, a cooling tank 15 is fixedly connected to the frame 1, and a support base 8 is fixedly connected to the cooling tank 15. The cooling tank 15 has an inlet and an outlet on its side, with the outlet higher than the inlet. During the break-in process, coolant is introduced into the cooling tank 15 through the inlet to cool the components and prevent damage to the spindle 17, inner bushing 18, and transmission gear 19 due to excessively high temperatures during break-in.

[0046] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A break-in device for an adjuster in a gap self-adjusting mechanism, comprising a frame (1) and a tooling (2), wherein the frame (1) is connected to a support (3) and a drive motor (4) capable of driving the support (3) to move up and down is provided on the frame (1), characterized in that, The frame (1) is fixed with a support base (8) below the bracket (3). The tooling (2) includes a mounting base (6) connected to the support base (8) and movable up and down, and a limiting sleeve (7) with internal threads. The mounting base (6) is provided with a T-shaped mounting hole (6a). The support base (8) is provided with a support spring (9) below the mounting base (6) where the mounting hole (6a) is located. The bracket (3) is fixedly connected with a torque output component (5). The lower end of the torque output component (5) has a connecting part (5b1). The bottom of the bracket (3) is provided with a pressing part (3b). The lower end face of the pressing part (3b) is lower than the connecting part (5b1). The mounting hole (6a) is located below the connecting part (5b1).

2. The break-in device for the adjuster in a gap self-adjusting mechanism according to claim 1, characterized in that, The torque output assembly (5) includes a torque output motor (5a), a drive shaft (5b) located below the torque output motor (5a), and a torque sensor (5c) connected between the torque output motor (5a) and the drive shaft (5b). The joint (5b1) is located at the lower end of the drive shaft (5b). A pressure sensor (12) is fixed inside the support base (8). The lower end of the support spring (9) acts on the force-bearing part of the pressure sensor (12).

3. The break-in device for the adjuster in a gap self-adjusting mechanism according to claim 2, characterized in that, The pressure sensor (12) is provided with a spring seat (13) at the force-bearing part, and the lower end of the support spring (9) abuts against the spring seat (13).

4. A break-in device for an adjuster in a gap self-adjusting mechanism according to claim 2 or 3, characterized in that, The upper end of the support spring (9) is abutted against a support block (14), the upper end of the support block (14) is provided with a relief cavity (14a), and the bottom wall center area of ​​the relief cavity (14a) is provided with a through hole (14b).

5. A break-in device for an adjuster in a gap self-adjusting mechanism according to claim 2, characterized in that, The outer shell of the torque sensor (5c) is non-circular, and the bracket (3) is fixed with an anti-rotation block (11). The anti-rotation block (11) abuts against the side wall of the outer shell of the torque sensor (5c) to restrict its rotation.

6. The break-in device for the adjuster in a gap self-adjusting mechanism according to claim 1, characterized in that, The support base (8) includes a base plate (8a) and two support columns (8b) fixed on the base plate (8a) and arranged opposite to each other. The upper ends of the two support columns (8b) are provided with guide heads (8b1). The mounting base (6) is provided with two guide holes (6b) respectively. The two guide heads (8b1) are inserted into the two guide holes (6b).

7. A break-in device for an adjuster in a gap self-adjusting mechanism according to claim 1, characterized in that, The bracket (3) includes a frame (3a), a top pressing part (3b) is block-shaped and fixedly connected to the bottom of the frame (3a) by at least one connecting column (3c), and the top pressing part (3b) is provided with a clearance hole (3b1) in the vertical direction, and the axis of the drive shaft (5b) passes through the clearance hole (3b1).

8. A break-in device for an adjuster in a gap self-adjusting mechanism according to claim 1, 2, or 3, characterized in that, The frame (1) is fixedly connected to a cooling tank (15), and the support base (8) is fixedly connected to the cooling tank (15).

9. A break-in device for an adjuster in a gap self-adjusting mechanism according to claim 8, characterized in that, The cooling tank (15) is provided with an inlet and an outlet on its side, with the outlet being higher than the inlet.

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