Electric vehicle brake disc service life testing device and use method thereof

Abstract

The invention relates to the technical field of vehicle detection, in particular to an electric vehicle disc brake service life testing device and a use method thereof.In the testing process, a to-be-tested disc brake system is subjected to installation preparation before testing, specifically, a hand brake handle is installed on a brake simulation mechanism, and a brake disc and brake calipers are installed on a disc brake fixing mechanism; then starting a test process, firstly starting a power output mechanism to drive a brake disc to rotate, triggering a brake simulation mechanism and applying pressure to a hand brake handle after a set rotating speed is reached, simulating a brake effect, and setting a time length of a timer to meet the time required by one test process; and entering the next test process after the test process is determined to reach the time through the timer, and disassembling the brake disc to check whether the abrasion loss of the brake disc reaches the standard or not until the test times recorded by the counter reach the test requirements. The device not only can detect a common disc brake system, but also can detect a high-end disc brake system with an ABS function, is efficient and accurate, can improve the safety coefficient of travel, and has great popularization value.

Description

Technical Field

[0001] The present invention relates to the field of vehicle detection technology, and in particular to a device for testing the service life of an electric vehicle disc brake and a method for using the device. Background Art

[0002] With the growing popularity of two-wheeled electric vehicles and the iterative upgrades of vehicle technology, models equipped with disc brakes have become a mainstream feature in the market. However, in practice, disc brake systems have exposed problems such as unstable performance and brake failure, especially in models equipped with ABS. Driven by the industry trend of continuously improving braking performance, the application of high-end disc brake components with integrated ABS anti-lock braking systems is expanding. However, existing disc brake systems lack reliability testing and life prediction methods, facing technical bottlenecks such as limited manual testing efficiency and insufficient ABS functional verification.

[0003] Traditional road testing relies on manual braking fatigue testing, which results in long testing cycles and high labor costs. Furthermore, due to differences in tester operating habits, it's difficult to ensure consistency in key parameters like braking intensity and frequency, resulting in low testing efficiency and less objective results. Furthermore, when the test equipment simulates ABS operating conditions, calibration flaws in the system's anti-lock braking logic can't be effectively exposed in a laboratory setting, leading to numerous reports of ABS failures on the market. For customer safety, it's crucial to improve vehicle quality and manage the quality of disc brake systems. Summary of the Invention

[0004] The present invention provides an electric vehicle disc brake service life testing device and a method for using the same, which can effectively solve the problems in the background technology.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is: An electric vehicle disc brake service life testing device comprises a test bench and a disc brake fixing mechanism, a power output mechanism, a brake simulation mechanism and a control center arranged thereon, wherein the control center is connected to the power output mechanism and the brake simulation mechanism respectively; The disc brake fixing mechanism is used to fix the disc brake system to be tested and provide kinetic energy through the power output mechanism; The brake simulation mechanism is used to fix the handbrake handle and drive the handbrake handle to control the disc brake system to be tested fixed on the disc brake fixing mechanism to simulate braking; The control center includes a motor controller, a counter and a timer. The counter records the number of tests, and the timer records the test duration.

[0006] Furthermore, the brake simulation mechanism includes a support column and a fixed seat, a lifting assembly and a counterweight assembly arranged thereon, wherein the fixed seat is arranged on the top of the support column, the lifting assembly is arranged below the fixed seat corresponding to the fixed seat, and the counterweight assembly is arranged on the lifting assembly and connected to the handbrake handle installed on the fixed seat; A micro switch is provided on the support column corresponding to the lifting assembly, and both the micro switch and the lifting assembly are connected to the control center.

[0007] Furthermore, the fixing seat includes a mounting vertical plate and a brake handle fixing shaft arranged thereon, and two brake handle fixing shafts are arranged horizontally; The lifting assembly includes a mounting horizontal plate and a lifting cylinder arranged thereon, wherein the lifting cylinder is arranged vertically and a bearing plate is arranged on its output shaft; The counterweight assembly includes a counterweight and a connecting seat, and the counterweight is connected to the hook on the connecting seat through a hook on the counterweight; The counterweight is placed on the bearing plate, and the connecting seat is mounted on the handbrake handle of the brake handle fixing shaft.

[0008] Furthermore, the disc brake fixing mechanism includes a mounting seat and a mounting frame, a transmission shaft is provided on the mounting seat and is rotatably connected thereto, and a mounting disc and a first belt pulley are provided on the transmission shaft and rotate coaxially therewith; The mounting frame is arranged close to the mounting plate, and the mounting plate is used to fix the brake disc. A caliper fixing plate and an ABS sensor are arranged on the mounting frame corresponding to the brake disc on the mounting plate.

[0009] Furthermore, the mounting base is fixedly connected to the test bench via bolts provided on its chassis, and a first adjustment hole is provided on the chassis corresponding to the bolt, and the first adjustment hole is provided along an axial direction perpendicular to the transmission shaft; An adjustment seat is provided on the test bench corresponding to the mounting seat, and an adjustment bolt is provided on the adjustment seat. The adjustment bolt is provided along the length direction of the first adjustment hole and is connected to the chassis.

[0010] Furthermore, the mounting frame includes a base plate and an adjustment vertical plate arranged thereon, an adjustment horizontal plate is arranged on the adjustment vertical plate, a second adjustment hole is opened on the base plate along the axial direction of the transmission shaft, and the base plate is fixedly connected to the test bench via a bolt arranged in the second adjustment hole; A plurality of first connecting holes are provided on the adjusting vertical plate in the vertical direction, the adjusting horizontal plate is fixedly connected to the first connecting holes by bolts, a third adjusting hole and a second connecting hole are provided on the adjusting horizontal plate, the third adjusting hole is opened in the horizontal direction perpendicular to the axis of the transmission shaft, the second connecting hole is provided on the top of the adjusting horizontal plate, and a plurality of second connecting holes are provided in its length direction, the caliper fixing plate is fixedly connected to the adjusting horizontal plate by bolts in the third adjusting hole, and the ABS sensor is fixedly connected to the adjusting horizontal plate through the second connecting hole.

[0011] Furthermore, the power output mechanism includes a drive shaft and an inertia turntable and a second belt pulley rotating coaxially therewith, the drive shaft is connected to the motor output shaft through a coupling, the second belt pulley is connected to the first belt pulley through a transmission belt, and a speed sensor is provided on the test bench corresponding to the inertia turntable.

[0012] Furthermore, two sets of the disc brake fixing mechanisms are arranged opposite to each other on the test bench, and the diameters of the two first belt pulleys in the two disc brake fixing mechanisms are different; The two first belt pulleys in the two disc brake fixing mechanisms are respectively connected to the second belt pulley through the two transmission belts, and rotate synchronously with the second belt pulley.

[0013] A method for using a device for testing the service life of an electric vehicle disc brake disc, using the above-mentioned device for testing the service life of an electric vehicle disc brake disc, comprises the following steps: Fix the brake disc and brake caliper of the disc brake system to be tested on the mounting base and mounting bracket of the disc brake fixing mechanism respectively. Adjust the monitoring position of the ABS sensor on the mounting bracket and the fixing angle of the handbrake handle in the brake simulation mechanism. After the motor is started by the motor controller and the inertia turntable is driven to the preset speed in conjunction with the speed sensor, the lifting assembly is started to drive the counterweight assembly down and the handbrake handle is closed, and at the same time the micro switch is triggered to stop the motor; After the lifting assembly descends to the preset position, gravity is applied to the handbrake handle through the counterweight assembly, causing the brake disc installed in the disc brake fixing mechanism to be rubbed by the brake caliper, and simultaneously driving the inertia turntable to slow down its speed; The test time is recorded by the timer and when the preset time is reached, the test number of the counter is adjusted to add 1, and the lifting mechanism is driven to rise, so that the handbrake handle is reset, and the motor is started after the micro switch is triggered to enter the next test process; After the test process is cycled through the set number of tests, the test device is shut down, the brake disc on the mounting seat is removed, and the wear is checked to see if it meets the standard.

[0014] Furthermore, the ABS sensors in the two disc brake fixing mechanisms detect the speed difference of the brake discs on the two mounting seats to meet the ABS function triggering conditions, and the stability and reliability of the ABS are judged by observing whether the handbrake handle jumps slightly.

[0015] The beneficial effects of the present invention are: The device of the present invention can detect both ordinary disc brake systems and high-end disc brake systems with ABS function. During the ABS function test, the two disc brake discs are respectively fixed on the two mounting seats of the two disc brake fixing mechanisms, and the detection positions of the two ABS sensors are respectively adjusted to ensure that the sensors effectively monitor the disc brake disc speed and transmit data. This not only improves the accuracy of the detection, but also improves the detection efficiency and further improves the safety factor of travel, which is of great promotion value. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 Schematic diagram of the electric vehicle disc brake service life testing device of the present invention; Figure 2 Schematic diagram of the structure of the brake simulation mechanism of the present invention; Figure 3 It is a schematic structural diagram of the power output mechanism and the disc brake fixing mechanism in the present invention; Figure 4 It is a structural schematic diagram of the mounting seat in the disc brake fixing mechanism of the present invention; Figure 5 Schematic diagram of the structure of the mounting frame in the disc brake fixing mechanism of the present invention; Figure 6 This is a schematic diagram of the installation of the brake caliper and brake disc on the disc brake fixing mechanism in the present invention.

[0018] Figures: 1, test bench; 2, disc brake fixing mechanism; 21, mounting seat; 211, transmission shaft; 212, mounting plate; 213, chassis; 214, first adjustment hole; 215, first belt pulley; 22, mounting frame; 221, bottom plate; 221a, second adjustment hole; 222, adjustment vertical plate; 222a, first connecting hole; 223, adjustment horizontal plate; 223a, third adjustment hole; 223b, second connecting hole; 23, caliper fixing plate; 24, ABS sensor; 25, adjustment seat; 251, adjustment bolt; 3, power output mechanism; 31, drive shaft; 3 2. Inertia turntable; 33. Second pulley; 34. Coupling; 35. Motor; 36. Drive belt; 37. Speed sensor; 4. Brake simulation mechanism; 41. Support column; 42. Fixed seat; 421. Mounting vertical plate; 422. Brake handle fixing shaft; 43. Lifting assembly; 431. Mounting horizontal plate; 432. Lifting cylinder; 433. Loading plate; 44. Counterweight assembly; 441. Counterweight; 442. Connecting seat; 443. Hook; 444. Hook; 45. Micro switch; 5. Control center; 51. Motor controller; 52. Counter; 53. Timer. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0020] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly attached to the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used in this specification of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0022] like Figures 1 to 6The electric vehicle disc brake disc service life testing device shown includes a test bench 1 and a disc brake fixing mechanism 2, a power output mechanism 3, a brake simulation mechanism 4 and a control center 5 arranged thereon, and the control center 5 is connected to the power output mechanism 3 and the brake simulation mechanism 4 respectively; the disc brake fixing mechanism 2 is used to fix the disc brake system to be tested and provide kinetic energy through the power output mechanism 3; the brake simulation mechanism 4 is used to fix the handbrake handle and drive the handbrake handle to control the simulated braking of the disc brake system to be tested fixed on the disc brake fixing mechanism 2; the control center 5 includes a motor 35 controller, a counter 52 and a timer 53, the number of tests is recorded by the counter 52, and the test duration is recorded by the timer 53.

[0023] During the test, the disc brake system to be tested is first installed and prepared before the test. Specifically, the handbrake handle is installed on the brake simulation mechanism 4, and the brake disc and brake caliper are installed on the disc brake fixing mechanism 2; then the test process is started, and the power output mechanism 3 is first started to drive the brake disc to rotate. When the set speed is reached, the brake simulation mechanism 4 is triggered and pressure is applied to the handbrake handle to simulate the braking effect. The timer 53 is set to a duration that meets the time required for one test process; after the timer 53 determines that the test process has expired, the next test process is entered until the number of tests recorded by the counter 52 reaches the test requirements, and then the brake disc is removed to check whether its wear meets the standard.

[0024] In this embodiment, if Figure 2 The brake simulation mechanism 4 shown includes a support column 41 and a fixed seat 42, a lifting assembly 43 and a counterweight assembly 44 arranged thereon. The fixed seat 42 is arranged on the top of the support column 41, and the lifting assembly 43 is arranged below it corresponding to the fixed seat 42. The counterweight assembly 44 is arranged on the lifting assembly 43 and is connected to the handbrake handle installed on the fixed seat 42; a micro switch 45 is arranged on the support column 41 corresponding to the lifting assembly 43, and the micro switch 45 and the lifting assembly 43 are both connected to the control center 5.

[0025] During the specific implementation process, the handbrake handle is installed on the fixing seat 42, the counterweight assembly 44 is placed on the lifting assembly 43 and connected to the handbrake handle. When the lifting assembly 43 is driven to descend, the counterweight assembly 44 applies pressure to the handbrake handle under the action of gravity, so that friction is generated between the brake caliper installed in the disc brake fixing mechanism 2 and the brake disc during rotation, simulating the braking state.

[0026] See Figure 2 As shown, the fixing seat 42 includes a mounting vertical plate 421 and a brake handle fixing shaft 422 arranged thereon, and two brake handle fixing shafts 422 are arranged horizontally; the two brake handle fixing shafts 422 are respectively used to install two handbrake handles in the disc brake system to be tested of the electric vehicle.

[0027] Lifting assembly 43 includes a mounting cross plate 431 and a lifting cylinder 432 mounted thereon. Lifting cylinder 432 is vertically mounted and has a support plate 433 attached to its output shaft. Counterweight assembly 44 includes a counterweight 441 and a connecting base 442. Counterweight 441 is connected to a hook 444 on connecting base 442 via a hook 443. Counterweight 441 is placed on support plate 433, and connecting base 442 is mounted on the handbrake handle of the brake handle fixed shaft 422. When lifting assembly 43 is lowered, counterweight 441 pulls hook 444 via hook 443, which in turn applies pressure to the handbrake handle via connecting base 442.

[0028] In this embodiment, if Figure 3 The disc brake fixing mechanism 2 shown includes a mounting seat 21 and a mounting frame 22. A transmission shaft 211 is provided on the mounting seat 21 and is rotatably connected thereto. A mounting disk 212 and a first belt pulley 215 that rotate coaxially therewith are provided on the transmission shaft 211. The mounting frame 22 is arranged close to the mounting disk 212, and the mounting disk 212 is used to fix the brake disc. A caliper fixing plate 23 and an ABS sensor 24 are provided on the mounting frame 22 corresponding to the brake disc on the mounting disk 212.

[0029] During the test, the brake disc is mounted on the mounting disc 212, and the transmission shaft 211 is driven to rotate by the first pulley 215 to rotate the brake disc; the brake caliper is mounted on the mounting frame 22, and the braking effect is simulated under the control of the handbrake handle.

[0030] See Figure 4 As shown, the mounting seat 21 is fixedly connected to the test bench 1 by bolts arranged on its chassis 213, and a first adjustment hole 214 is opened on the chassis 213 corresponding to the bolt, and the first adjustment hole 214 is opened along an axial direction perpendicular to the transmission shaft 211; an adjustment seat 25 is provided on the test bench 1 corresponding to the mounting seat 21, and an adjusting bolt 251 is provided on the adjusting seat 25, and the adjusting bolt 251 is arranged along the length direction of the first adjustment hole 214 and is connected to the chassis 213.

[0031] The mounting base 21 can adjust its position on the test bench 1, and the specific adjustment direction is the length direction of the first adjustment hole 214; by adjusting the position of the mounting base 21 and driving the transmission shaft 211 and the first belt pulley 215 on it to move horizontally, the transmission belt 36 mounted on the first belt pulley 215 is tightened.

[0032] See further Figure 5As shown, the mounting frame 22 includes a base plate 221 and an adjustment vertical plate 222 arranged thereon, an adjustment horizontal plate 223 is arranged on the adjustment vertical plate 222, and a second adjustment hole 221a is opened on the base plate 221 along the axial direction of the transmission shaft 211. The base plate 221 is fixedly connected to the test bench 1 by a bolt arranged in the second adjustment hole 221a; the distance between the mounting frame 22 and the mounting base 21 is conveniently adjusted through the second adjustment hole 221a.

[0033] A plurality of first connecting holes 222a are provided on the adjusting vertical plate 222 in the vertical direction, and the adjusting horizontal plate 223 is fixedly connected to the first connecting hole 222a by bolts. A third adjusting hole 223a and a second connecting hole 223b are provided on the adjusting horizontal plate 223. The third adjusting hole 223a is opened in a horizontal direction perpendicular to the axis of the transmission shaft 211, and the second connecting hole 223b is provided at the top of the adjusting horizontal plate 223, and a plurality of second connecting holes 223b are provided in its length direction. The caliper fixing plate 23 is fixedly connected to the adjusting horizontal plate 223 by bolts in the third adjusting hole 223a, and the ABS sensor 24 is fixedly connected to the adjusting horizontal plate 223 through the second connecting hole 223b.

[0034] The multiple first connecting holes 222a facilitate the adjustment of the installation position of the adjusting cross plate 223 in the vertical height. Similarly, the multiple second connecting holes 223b facilitate the adjustment of the installation position of the ABS sensor 24. The third adjusting hole 223a facilitates the adjustment of the fixing position of the caliper fixing plate 23; not only the installation accuracy of the brake disc and the brake caliper is ensured, but also the detection accuracy of the ABS sensor 24 is ensured.

[0035] In this embodiment, if Figure 3 The power output mechanism 3 shown includes a drive shaft 31 and an inertia turntable 32 and a second belt pulley 33 that rotate coaxially therewith. The drive shaft 31 is connected to the output shaft of the motor 35 through a coupling 34. The second belt pulley 33 is connected to the first belt pulley 215 through a transmission belt 36. A speed sensor 37 is provided on the test bench 1 corresponding to the inertia turntable 32.

[0036] In practice, motor 35 drives the rotation of inertia disk 32, which in turn also drives the brake disc. When braking simulation begins, motor 35 stops, but inertia disk 32 continues to rotate due to inertia, driving the brake disc. The brake caliper then rubs the rotating disc. A speed sensor 37 detects whether the inertia disk 32, driven by motor 35, has reached a preset speed. When this speed is reached, the brake simulation mechanism 4 is activated, and motor 35 is shut down.

[0037] As a preferred embodiment of the present application, two groups of disc brake fixing mechanisms 2 are relatively arranged on the test bench 1, and the diameters of the two first belt pulleys 215 in the two disc brake fixing mechanisms 2 are different; the two first belt pulleys 215 in the two disc brake fixing mechanisms 2 are respectively connected to the second belt pulley 33 through two transmission belts 36, and rotate synchronously with the second belt pulley 33.

[0038] The disc brake system includes a disc brake disc and a handbrake, which can be used alone or in pairs for the front and rear wheels. High-end brake systems add ABS function, which requires the use of front and rear disc brakes in combination. The device of the present invention can meet the ABS function test. When the two disc brake discs are fixed on the two mounting seats 21 of the two disc brake fixing mechanisms 2, the detection positions of the two ABS sensors 24 are adjusted according to actual conditions to ensure that the sensors effectively monitor the disc brake disc speed and transmit data.

[0039] The present invention further discloses a method for using a device for testing the service life of an electric vehicle disc brake disc, which comprises the following steps: Fix the brake disc and brake caliper of the disc brake system to be tested on the mounting base and mounting bracket of the disc brake fixing mechanism respectively. Adjust the monitoring position of the ABS sensor on the mounting bracket and the fixing angle of the handbrake handle in the brake simulation mechanism. After the motor is started by the motor controller and the inertia turntable is driven to the preset speed in conjunction with the speed sensor, the lifting assembly is started to drive the counterweight assembly down and the handbrake handle is closed, and at the same time the micro switch is triggered to stop the motor; After the lifting assembly descends to the preset position, gravity is applied to the handbrake handle through the counterweight assembly, causing the brake disc installed in the disc brake fixing mechanism to be rubbed by the brake caliper, and simultaneously driving the inertia turntable to slow down its speed; The test time is recorded by the timer and when the preset time is reached, the test number of the counter is adjusted to add 1, and the lifting mechanism is driven to rise, so that the handbrake handle is reset, and the motor is started after the micro switch is triggered to enter the next test process; After the test process is cycled through the set number of tests, the test device is shut down, the brake disc on the mounting seat is removed, and the wear is checked to see if it meets the standard.

[0040] Furthermore, the ABS sensors in the two disc brake fixing mechanisms detect the speed difference of the brake discs on the two mounting seats to meet the ABS function triggering conditions, and the stability and reliability of the ABS are judged by observing whether the handbrake handle jumps slightly.

[0041] During the test, the disc brake system to be tested is prepared. The disc brake rotor is fixed to the disc brake mounting mechanism. For systems with ABS, the ABS sensor must be properly secured. The handbrake handle is fixed to the brake simulation mechanism, paying attention to the angle of the handbrake handle. The counterweight on the handbrake handle is then adjusted to ensure the braking simulation meets the test requirements. When the test process begins, the test device is powered on, the counter and timer parameters are set, and the test begins.

[0042] The motor starts and drives the inertia turntable to rotate. After the speed sensor monitors that the inertia turntable has reached a predetermined speed, the lifting assembly in the brake simulation mechanism begins to descend, which in turn de-energizes the motor via the microswitch. The inertia turntable continues to rotate due to inertia. After the cylinder descends to a certain position, the counterweight on the handbrake handle begins to exert gravity on the handle, causing the handbrake to close. The disc brake disc is subjected to friction, slowing the rotation of the inertia turntable, achieving the braking effect, and the counter records a test. When the timer expires, the lifting assembly on the brake simulation mechanism begins to rise, the microswitch is energized, and the handbrake is reset. The disc brake disc is now in its natural state, the motor starts, and drives the inertia turntable to rotate. When the speed is reached, the brake simulation mechanism begins to operate, and this cycle repeats. After the set number of tests is reached, the test device stops, and the disc brake disc is removed to check whether the disc brake wear meets the standard.

[0043] A braking system with ABS requires a speed difference between the two disc brakes to trigger the ABS function. The test device uses two disc brake mounting mechanisms to achieve differential rotation of the two disc brakes. Because the diameters of the two first pulleys in the two disc brake mounting mechanisms differ, the drive shaft, driven by a drive belt, achieves a speed difference between the two first pulleys. The braking system's ABS sensor detects this speed difference, thus triggering the ABS function. During braking, observe whether the handbrake handle vibrates slightly to determine ABS stability and reliability.

[0044] Those skilled in the art will appreciate that the present invention is not limited to the foregoing embodiments. The foregoing embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for testing the service life of an electric vehicle disc brake, characterized in that: It includes a test bench and a disc brake fixing mechanism, a power output mechanism, a brake simulation mechanism and a control center arranged thereon, wherein the control center is connected to the power output mechanism and the brake simulation mechanism respectively; The disc brake fixing mechanism is used to fix the disc brake system to be tested and provide kinetic energy through the power output mechanism; The brake simulation mechanism is used to fix the handbrake handle and drive the handbrake handle to control the disc brake system to be tested fixed on the disc brake fixing mechanism to simulate braking; The control center includes a motor controller, a counter and a timer. The counter records the number of tests, and the timer records the test duration.

2. The electric vehicle disc brake service life testing device according to claim 1, characterized in that: The brake simulation mechanism includes a support column and a fixed seat, a lifting assembly and a counterweight assembly arranged thereon, wherein the fixed seat is arranged on the top of the support column, the lifting assembly is arranged below the fixed seat corresponding to the fixed seat, and the counterweight assembly is arranged on the lifting assembly and connected to the handbrake handle installed on the fixed seat; A micro switch is provided on the support column corresponding to the lifting assembly, and both the micro switch and the lifting assembly are connected to the control center.

3. The electric vehicle disc brake service life testing device according to claim 2, characterized in that: The fixing seat includes a mounting vertical plate and a brake handle fixing shaft arranged thereon, and two brake handle fixing shafts are arranged horizontally; The lifting assembly includes a mounting horizontal plate and a lifting cylinder arranged thereon, wherein the lifting cylinder is arranged vertically and a bearing plate is arranged on its output shaft; The counterweight assembly includes a counterweight and a connecting seat, and the counterweight is connected to the hook on the connecting seat through a hook on the counterweight; The counterweight is placed on the bearing plate, and the connecting seat is mounted on the handbrake handle of the brake handle fixing shaft.

4. The electric vehicle disc brake service life testing device according to claim 2, characterized in that: The disc brake fixing mechanism includes a mounting seat and a mounting frame, a transmission shaft is provided on the mounting seat and is rotatably connected thereto, and a mounting disc and a first belt pulley are provided on the transmission shaft and rotate coaxially therewith; The mounting frame is arranged close to the mounting plate, and the mounting plate is used to fix the brake disc. A caliper fixing plate and an ABS sensor are arranged on the mounting frame corresponding to the brake disc on the mounting plate.

5. The electric vehicle disc brake service life testing device according to claim 4, characterized in that: The mounting seat is fixedly connected to the test bench via bolts provided on its chassis, and a first adjustment hole is provided on the chassis corresponding to the bolt, and the first adjustment hole is provided along an axial direction perpendicular to the transmission shaft; An adjustment seat is provided on the test bench corresponding to the mounting seat, and an adjustment bolt is provided on the adjustment seat. The adjustment bolt is provided along the length direction of the first adjustment hole and is connected to the chassis.

6. The electric vehicle disc brake service life testing device according to claim 4, characterized in that: The mounting frame includes a bottom plate and an adjustment vertical plate arranged thereon, an adjustment horizontal plate is arranged on the adjustment vertical plate, a second adjustment hole is opened on the bottom plate along the axial direction of the transmission shaft, and the bottom plate is fixedly connected to the test bench via a bolt arranged in the second adjustment hole; A plurality of first connecting holes are provided on the adjusting vertical plate in the vertical direction, the adjusting horizontal plate is fixedly connected to the first connecting holes by bolts, a third adjusting hole and a second connecting hole are provided on the adjusting horizontal plate, the third adjusting hole is opened in the horizontal direction perpendicular to the axis of the transmission shaft, the second connecting hole is provided on the top of the adjusting horizontal plate, and a plurality of second connecting holes are provided in its length direction, the caliper fixing plate is fixedly connected to the adjusting horizontal plate by bolts in the third adjusting hole, and the ABS sensor is fixedly connected to the adjusting horizontal plate through the second connecting hole.

7. The electric vehicle disc brake service life testing device according to claim 4, characterized in that: The power output mechanism includes a drive shaft and an inertia turntable and a second belt pulley rotating coaxially therewith. The drive shaft is connected to the motor output shaft through a coupling, and the second belt pulley is connected to the first belt pulley through a transmission belt. A speed sensor is provided on the test bench corresponding to the inertia turntable.

8. The electric vehicle disc brake service life testing device according to claim 7, characterized in that: Two sets of the disc brake fixing mechanisms are arranged opposite to each other on the test bench, and the diameters of the two first belt pulleys in the two disc brake fixing mechanisms are different; The two first belt pulleys in the two disc brake fixing mechanisms are respectively connected to the second belt pulley through the two transmission belts, and rotate synchronously with the second belt pulley.

9. A method for using a device for testing the service life of an electric vehicle disc brake, characterized in that: The electric vehicle disc brake service life testing device according to claim 8 comprises the following steps: Fix the brake disc and brake caliper of the disc brake system to be tested on the mounting base and mounting bracket of the disc brake fixing mechanism respectively. Adjust the monitoring position of the ABS sensor on the mounting bracket and the fixing angle of the handbrake handle in the brake simulation mechanism. After the motor is started by the motor controller and the inertia turntable is driven to the preset speed in conjunction with the speed sensor, the lifting assembly is started to drive the counterweight assembly down and the handbrake handle is closed, and at the same time the micro switch is triggered to stop the motor; After the lifting assembly descends to the preset position, gravity is applied to the handbrake handle through the counterweight assembly, causing the brake disc installed in the disc brake fixing mechanism to be rubbed by the brake caliper, and simultaneously driving the inertia turntable to slow down its speed; The test time is recorded by the timer and when the preset time is reached, the test number of the counter is adjusted to add 1, and the lifting mechanism is driven to rise, so that the handbrake handle is reset, and the motor is started after the micro switch is triggered to enter the next test process; After the test process is cycled through the set number of tests, the test device is shut down, the brake disc on the mounting seat is removed, and the wear is checked to see if it meets the standard.

10. The method for using the electric vehicle disc brake service life testing device according to claim 9, characterized in that: The ABS sensors in the two disc brake fixing mechanisms detect the speed difference of the brake discs on the two mounting seats, thus meeting the ABS function triggering conditions. The stability and reliability of the ABS can be judged by observing whether the handbrake handle vibrates slightly.

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