A motor-driven internal gear rotary intelligent connected vehicle ABS test bench

Abstract

This invention discloses a direct-drive internal gear rotary intelligent connected vehicle ABS test bench, comprising a rotating platform, an annular guide rail, a reduction motor assembly, a rotary internal gear, four roller assembly assemblies corresponding to the front and rear wheels of the vehicle, a front roller assembly main frame, a rear roller assembly main frame, a guide rail for the front roller assembly main frame, a front roller assembly frame, a rear roller assembly frame, a telescopic device, and a synchronous adjustment device. The annular guide rail is fixedly connected to the foundation. The rotating platform is rotatably connected to the annular guide rail, and the rotary internal gear is located at the center of the annular guide rail and rigidly connected to the rotating platform. This invention can not only detect the ABS operation status of intelligent connected vehicles when driving straight, but also detect the ABS performance of intelligent connected vehicles when making emergency avoidance maneuvers. This ABS test bench increases the detection indicators of braking performance of intelligent connected vehicles and expands the scope of ABS testing for intelligent connected vehicles.

Description

Technical Field

[0001] This invention relates to the field of automotive ABS testing bench technology, and more specifically to a motor-driven internal gear rotary intelligent connected vehicle ABS testing bench. Background Technology

[0002] With the widespread application of ABS in the automotive field and the rapid development of intelligent connected vehicles, how to comprehensively test the braking performance of ABS in intelligent connected vehicles has become an urgent problem to be solved. Currently, the main methods for testing the braking performance of vehicles are bench testing and road testing. However, road testing requires dedicated road surfaces, occupies a large area, is costly, requires the installation of testing equipment on the vehicle under test, and is time-consuming in both preparation and testing. Furthermore, the test involves emergency braking at high speeds, which is highly dangerous and easily affected by environmental factors, resulting in poor repeatability. Therefore, road testing is only suitable for ABS matching tests of a specific vehicle model or random checks of ABS in some vehicles, and is not suitable for mass production testing of vehicles or periodic inspections of vehicles already in use.

[0003] Compared with road testing, the test bench testing method has advantages such as small footprint, low cost, fast testing speed, high safety, good repeatability, and the testing process is not affected by the environment. It can be used as an ideal method for testing the braking performance of intelligent connected vehicles. However, the existing ABS performance test bench cannot test the braking performance of the vehicle during the emergency avoidance turning process.

[0004] Therefore, how to provide a motor-driven internal gear rotary intelligent connected vehicle ABS test bench with a compact structure, high transmission efficiency, and effective ability to test the ABS performance of intelligent connected vehicles is one of the technical problems that urgently need to be solved in this field. Summary of the Invention

[0005] In view of this, to address the shortcomings of existing testing benches, this invention provides a motor-driven internal gear rotary intelligent connected vehicle ABS test bench. This bench can not only test the ABS operation of intelligent connected vehicles during straight-line driving, but also test the ABS performance during emergency avoidance maneuvers. This ABS test bench increases the testing indicators for the braking performance of intelligent connected vehicles, expanding the scope of ABS testing and thus solving the problems mentioned in the background.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] A direct-drive internal gear rotary intelligent connected vehicle ABS test bench includes a rotating platform, an annular guide rail, a reduction motor assembly, a rotary internal gear, four roller assembly assemblies corresponding to the front and rear wheels of the vehicle, a front roller assembly main frame, a rear roller assembly main frame, a guide rail for the front roller assembly main frame, a front roller assembly frame, a rear roller assembly frame, a telescopic device, and a synchronous adjustment device.

[0008] The annular guide rail is fixedly connected to the foundation; the rotating platform is rotatably connected to the annular guide rail, and the rotating platform can rotate clockwise and counterclockwise along the annular guide rail by means of V-shaped track wheels installed below it; the rotary internal gear is located at the center of the annular guide rail and is rigidly connected to the rotating platform; the geared motor assembly is placed on the annular guide rail or the foundation and is connected to the rotary internal gear; an angle encoder is connected below the rotary internal gear through a meshing gear;

[0009] The front roller assembly main frame guide rail is located on the upper part of one end of the rotating platform; the front roller assembly main frame is movably connected to the front roller assembly main frame guide rail for mounting the front roller assembly frame; the rear roller assembly main frame is fixedly connected to the other end of the rotating platform for mounting the rear roller assembly frame; one end of the telescopic device is fixedly connected to the end of the front roller assembly main frame near the rear roller assembly main frame, and the other end is fixedly connected to the corresponding end of the rear roller assembly main frame; the synchronous adjustment device is also fixedly connected between the four front / rear roller assembly assemblies, and the synchronous adjustment device extends or shortens with the telescopic device;

[0010] A movable overpass is fixedly connected to the other end of the main frame of the front roller assembly; a fixed overpass is fixedly connected to the other end of the main frame of the rear roller assembly.

[0011] Preferably, the V-shaped track wheelset is installed on the periphery of the rotating platform and is placed on the annular guide rail during assembly, providing support and guidance for the rotating platform.

[0012] Preferably, the geared motor assembly includes a motor and a transmission gearbox connected to the output end of the motor; the transmission gearbox has the functions of speed reduction and torque increase and power reversal, and its output gear meshes with the rotary internal gear; the torque output by the motor directly drives the rotary internal gear to rotate through the transmission gearbox, thereby driving the rotating platform to rotate.

[0013] Preferably, the geared motor assembly is used to drive the rotating platform to rotate. By means of instructions from the control system and in combination with the actual direction and angle of the vehicle being tested, the rotating platform is driven to rotate clockwise or counterclockwise by a certain angle.

[0014] Preferably, the steering angle information of the intelligent connected vehicle can be obtained by connecting to the on-board steering unit or by obtaining the steering wheel angle information through an external sensor.

[0015] Preferably, a sensing gear is meshed within the rotating internal gear; and the sensing gear is connected to the angle encoder for detecting the rotation angle of the sensing gear; and the obtained angle signal is transmitted to the control system, through which the platform rotation angle and vehicle heading angle information can be obtained by calculation.

[0016] Preferably, each of the roller assembly includes a main roller and an auxiliary roller arranged in parallel and connected in drive, and the main rollers of the two roller assemblies corresponding to the front / rear wheels of the vehicle are coaxially arranged, including a sensing roller, a main roller bearing housing, an auxiliary roller bearing housing, and a flywheel assembly mounted on the front roller assembly frame / the rear roller assembly frame;

[0017] Both the main roller bearing housing and the auxiliary roller bearing housing are fixedly installed on the front roller assembly frame / rear roller assembly frame; the main roller is fixedly installed on the front roller assembly frame / rear roller assembly frame via the main roller bearing housings located at both ends of the main roller; an auxiliary roller guide rail is installed on the front roller assembly frame / rear roller assembly frame, and an auxiliary roller base is fixedly installed on the auxiliary roller guide rail; the auxiliary roller is installed on the auxiliary roller base via the auxiliary roller bearing housings located at both ends of the auxiliary roller;

[0018] The sensing roller is installed in parallel between the main roller and the auxiliary roller.

[0019] Preferably, the synchronous adjustment device includes a retractable universal drive shaft and T-shaped steering boxes located at both ends of the retractable universal drive shaft; the two side drive interfaces of the T-shaped steering box are respectively connected to the two corresponding main rollers, and the retractable universal drive shaft is connected to the middle drive interface of the T-shaped steering box.

[0020] Preferably, a roller clutch is provided between the transmission interfaces on both sides of the T-shaped steering box and the main roller.

[0021] Preferably, the roller assembly further includes a roller center distance adjustment mechanism; one end of the roller center distance adjustment mechanism is fixed on the front roller assembly frame / rear roller assembly frame, and the other end is fixed on the auxiliary roller base; the roller center distance adjustment mechanism drives the auxiliary roller base to move along the auxiliary roller guide rail, for adjusting the center distance between the main roller and the auxiliary roller.

[0022] Preferably, the roller assembly includes a lifter for adjusting the raising or lowering of the wheels; the lifter is fixed to the front roller assembly frame / the rear roller assembly frame, and a wheel lifting height sensor is installed at one end of it.

[0023] Preferably, the flywheel assembly includes a flywheel, a flywheel bearing housing for mounting the flywheel, and a flywheel clutch fixed to one side of the flywheel; the flywheel bearing housing is mounted on the front roller assembly frame / the rear roller assembly frame; the flywheel clutch is located between the flywheel and the flywheel bearing housing, and on the side away from the main roller.

[0024] Preferably, load cells can also be installed between the front roller assembly frame and the front roller assembly main frame, and between the rear roller assembly frame and the rear roller assembly main frame, for measuring the loads on the front and rear axles, respectively.

[0025] Preferably, the front roller assembly frame and the rear roller assembly frame are equipped with manual guide wheels to limit the lateral movement of the vehicle during inspection.

[0026] The present invention achieves the following technical effects compared to the prior art:

[0027] 1. In this invention, the main frame of the front and rear roller groups is mounted on a rotating platform. The geared motor assembly drives the rotating platform to rotate horizontally by a certain angle through direct drive of the internal gear. This can change the yaw angle of the intelligent connected vehicle being tested, simulate the driving state during emergency avoidance and steering, and test its ABS performance, thus expanding the detection range of ABS for intelligent connected vehicles.

[0028] 2. In this invention, the rotating internal gear at the center of the rotating platform directly meshes with the output gear of the transmission gearbox in the gear reduction motor assembly, resulting in a compact structure and high transmission efficiency.

[0029] 3. The V-shaped track wheel set installed below the rotating platform and connected to the annular guide rail in this invention uses steel V-shaped track wheel sets and adds rubber material spraying to the surface to enhance its support and positioning performance while reducing the noise generated when the platform rotates.

[0030] 4. In this invention, by setting up a main frame for the roller assembly and a corresponding sliding mechanism, it is ensured that one set of roller assemblies can move relative to each other, thereby ensuring the effectiveness of wheelbase adjustment and adapting to intelligent connected vehicle models with different wheelbases.

[0031] 5. In this invention, the control system dynamically adjusts the platform rotation angle according to the real-time direction rotation angle of the intelligent connected vehicle, making the simulation more accurate and the test data closer to the real value. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the structure of a motor-driven internal gear rotary intelligent connected vehicle ABS test bench according to the present invention;

[0033] Figure 2This is a front view schematic diagram of a motor-driven internal gear rotary intelligent connected vehicle ABS test bench according to the present invention.

[0034] Figure 3 This is a top view schematic diagram of a motor-driven internal gear rotary intelligent connected vehicle ABS test bench according to the present invention.

[0035] Figure 4 This is a flowchart of a method for controlling the rotation angle of a motor-driven internal gear rotary intelligent connected vehicle ABS test bench according to the present invention.

[0036] Figure 1-4 The components are as follows: 1. Fixed axle; 2. Manual stop wheel; 3. Front roller assembly frame; 4. Rear roller assembly frame; 5. Front roller assembly main frame; 6. Rear roller assembly main frame; 7. Moving axle; 8. Rotary platform; 9. Rotary internal gear; 10. Gear motor assembly; 11. Load cell; 12. Circular guide rail; 13. Foundation; 14. Telescopic device; 15. Front roller assembly main frame guide rail; 16. Lifter; 17. Synchronization adjustment device; 18. Angle encoder; 19. V-shaped track wheelset; 20. Main roller; 21. Auxiliary roller; 22. Sensor roller; 23. Main roller bearing housing; 24. Auxiliary roller bearing housing; 25. Flywheel; 26. Flywheel clutch; 27. Flywheel bearing housing; 28. T-shaped steering box; 29. ​​Roller clutch. Detailed Implementation

[0037] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0038] like Figure 1 and Figure 2 As shown, the present invention provides a motor-driven internal gear rotary intelligent connected vehicle ABS test bench, which includes a fixed overpass 1, a movable overpass 7, four roller assembly assemblies corresponding to the front and rear wheels of the vehicle, a front roller assembly frame 3, a rear roller assembly frame 4, a front roller assembly main frame 5, a rear roller assembly main frame 6, a reduction motor assembly 10 for driving the rotation of the rotating platform 8, a rotary internal gear 9, a weighing sensor 11, a ring guide rail 12, a telescopic device 14, a front roller assembly main frame guide rail 15, and a synchronous adjustment device 17; the front roller assembly frame 3 and the rear roller assembly frame 4 are equipped with manual stop wheels 2 to limit the lateral movement of the vehicle during testing.

[0039] The annular guide rail 12 is fixedly installed on the foundation 13. The geared motor assembly 10 is located below the rotating platform 8 and the rotary internal gear 9, and is used to drive the rotating platform 8 and the entire test bench to rotate along the annular guide rail 12. The geared motor assembly 10 includes a motor and a transmission gearbox connected to the output end of the motor. The output gear of the transmission gearbox meshes with the rotary internal gear 9 to drive the motor. The motor drives the rotary internal gear 9 to rotate through the transmission gearbox. The output gear of the transmission gearbox and the rotary internal gear 9 are driven by internal meshing. The rotary internal gear 9 and the rotating platform 8 are rigidly connected.

[0040] In this embodiment, the rotary internal gear 9 senses the rotation angle of the rotating platform 8 by meshing with a roller gear with an angle encoder 18 and sends the angle information to the control system. This helps the control system to make rotational adjustments and precise control to change the rotation angle of the entire test bench, thereby changing the heading angle of the vehicle under test to simulate the driving state of the vehicle during emergency avoidance and steering.

[0041] In a preferred embodiment of the present invention, both the front roller assembly main frame 5 and the rear roller assembly main frame 6 are fixedly mounted on the rotating platform 8. The front roller assembly main frame 5 is movably mounted on the front roller assembly main frame guide rail 15 on the rotating platform 8, and the rear roller assembly main frame 6 is fixedly mounted on the rotating platform 8. The front roller assembly frame 3 is fixedly mounted on the front roller assembly main frame 5, and the rear roller assembly frame 4 is fixedly mounted on the rear roller assembly main frame 6. A telescopic device 14 is connected to the side of the front roller assembly frame 3 closest to the rear roller assembly frame 4. The telescopic device 14 drives the front roller assembly main frame 5 to move along the front roller assembly main frame guide rail 15 to adjust the distance between the two roller assembly assemblies, thereby adapting to different vehicle wheelbases. The telescopic device 14 can be driven by an electric motor. The system is driven by a worm gear, an electric motor-driven reducer, hydraulic pressure, or pneumatic pressure. A retractable synchronous adjustment device 17 is installed between the front and rear roller assemblies. The synchronous adjustment device 17 extends or shortens with the retractable device 14 to ensure synchronous rotation of the two roller assemblies. The control unit receives the vehicle wheelbase command input from the testing personnel, calculates it, and causes the retractable device 14 to move the front roller assembly main frame 5 on the front roller assembly main frame guide rail 15. At the same time, a roller assembly wheelbase sensor is installed on the roller assembly to monitor the wheelbase of the two roller assemblies. The wheelbase of the two roller assemblies is adjusted to the correct position by the signal obtained by the roller assembly wheelbase sensor, thus realizing the adjustable wheelbase and synchronous transmission of the two roller assemblies.

[0042] like Figure 3As shown, in a preferred embodiment of the present invention, each roller assembly includes two parallel and drive-connected main rollers 20 and auxiliary rollers 21. The main rollers 20 are mounted on the front roller assembly main frame 5 / rear roller assembly main frame 6 via main roller bearing seats 23 located at both ends of the main rollers 20. Auxiliary roller guide rails are mounted on the front roller assembly main frame 5 / rear roller assembly main frame 6. Each roller assembly includes an auxiliary roller base movably mounted on the auxiliary roller guide rails. The auxiliary rollers 21 are mounted on the auxiliary roller bases via auxiliary roller bearing seats 24 located at both ends. During performance testing, to increase the rotational inertia of the rotating parts of the roller assembly, a flywheel assembly is added. The flywheel assembly includes a flywheel 25 and a flywheel clutch 26, with the flywheel clutch 26 rigidly connected to one side of the flywheel 25. It can be an electromagnetic clutch or a magnetic powder clutch. The flywheel clutch 26 is used to engage or disengage the flywheel 25 and the main drum 20, or to engage or disengage the flywheel 25 and the drive shaft of the main drum 20. It can also engage or disengage the flywheel 25 and the auxiliary drum 21. To ensure synchronous transmission between the main drum 20 and the auxiliary drum 21, a main drum sprocket and an auxiliary drum sprocket are respectively installed on the main drum 20 and the auxiliary drum 21. The main drum sprocket in the same drum group is installed between the flywheel bearing seat 27 and the main drum bearing seat 23. The auxiliary drum sprocket is installed on the side of the auxiliary drum bearing seat 24 away from the auxiliary drum 21. The auxiliary drum sprocket and the main drum sprocket are on the same plane. The main drum sprocket drives the auxiliary drum sprocket through a chain.

[0043] In this embodiment, the roller assembly also includes a sensing roller 22 installed in parallel between the main roller 20 and the auxiliary roller 21. One end of the sensing roller 22 is equipped with a sensing roller speed sensor for measuring wheel speed. The main roller 20 and / or the auxiliary roller 21 are equipped with roller speed sensors for measuring vehicle speed. The wheel speed signal measured by the sensing roller speed sensor is processed and transmitted to the control unit to obtain the wheel speed. The roller speed signal measured by the roller speed sensor is processed and transmitted to the control unit to obtain the vehicle speed.

[0044] In this embodiment, a weighing sensor 11 can also be installed between the front roller assembly frame 3 and the front roller assembly main frame 5, and between the rear roller assembly frame 4 and the rear roller assembly main frame 6, to measure the loads on the front axle and the rear axle respectively, and transmit the obtained load information to the control system.

[0045] In a preferred embodiment of the present invention, the synchronization adjustment device 17 includes a synchronization adjustment mechanism such as a retractable universal drive shaft, chain drive, or toothed belt drive, and T-shaped steering boxes 28 located at both ends of the retractable universal drive shaft, or other commutators used for reversing the direction between the retractable universal drive shaft and the main roller 20, such as... Figure 2As shown, the main rollers 20 on the two roller assemblies are coaxially arranged. Therefore, in this embodiment, a T-shaped steering box 28 is used, with its two side transmission interfaces conveniently connecting to the corresponding two main rollers 20 on the same roller assembly. A telescopic universal drive shaft is connected to the central transmission interface of each T-shaped steering box 28, thereby achieving synchronous transmission between the two roller assemblies. Roller clutches 29 are provided between the two side transmission interfaces of the T-shaped steering box 28 and the main rollers 20. The roller clutches 29 can be electromagnetic clutches or magnetic powder clutches. By controlling the roller clutches 29 at different positions to form different engagement states, it is convenient to measure the braking force and ABS performance of each wheel, ensuring the detection diversity of the entire testing device.

[0046] like Figure 4 As shown, in a preferred embodiment of the present invention, the control system is equipped with a platform rotation angle adjustment subroutine, which can adjust the platform rotation angle according to the real-time steering angle information of the intelligent connected vehicle. The angle encoder 18 detects the rotation angle of the roller gear meshing with the rotary internal gear 9 and transmits the signal to the control system. The platform rotation angle adjustment subroutine in the control system calculates the rotation angle of the rotating platform 8 based on the gear ratio between the rotary internal gear 9 and this roller gear. Since the platform can be equipped with an AC power dynamometer for electrical inertia simulation, the platform is eccentrically placed on the rotating platform 8. The platform rotation angle adjustment subroutine can obtain the actual yaw angle of the intelligent connected vehicle by converting the eccentric angle. During detection, the control system drives the rotating platform 8 to rotate to the position corresponding to the obtained intelligent connected vehicle steering angle through the reduction motor assembly 10 and compares it with the position. If they match, the position is maintained; if they do not match, the motor is driven to rotate and the angle comparison is performed again. Therefore, the platform rotation angle at a certain moment can be regarded as dynamically adjusted according to the real-time steering signal of the intelligent connected vehicle.

[0047] The process of testing the ABS working status of an intelligent connected vehicle during cornering in this invention is as follows:

[0048] Before the intelligent connected vehicle enters the ABS testing bench, the testing personnel input the vehicle's basic parameters. The control system adjusts the distance between the front and rear roller assemblies according to the wheelbase of the intelligent connected vehicle under test, causing the telescopic device 14 to move the main frame 5 of the front roller assembly on the guide rail 15 of the main frame. The roller assembly wheelbase sensor detects the signal that the wheelbase of the two roller assemblies has reached the correct position, and the lifters 16 of the two roller assemblies are raised. Afterward, when the front and rear wheels of the vehicle drive onto the two lifters respectively, the vehicle stops, and the two lifters lower simultaneously, so that the front and rear wheels of the vehicle land on the main roller 20 and auxiliary roller 21 of the two roller assemblies respectively. The sensing roller 22 located between the main and auxiliary rollers... After the vehicle is adjusted according to the set parameters and closely aligned with the wheels and tires, its ABS performance is tested. When the intelligent connected vehicle simulates an emergency avoidance steering state, the control unit receives directional commands from the intelligent connected vehicle through the steering-by-wire unit or information commands obtained through external sensors. Combined with the rotation angle information detected by the angle encoder, the control unit controls the reduction motor assembly 10 to drive the transmission gearbox to rotate. The output gear meshes with the internal rotation gear 9, driving the internal rotation gear 9 to rotate, which in turn drives the rotating platform 8 to rotate, thereby changing the heading angle of the intelligent connected vehicle. This achieves the purpose of simulating the emergency avoidance steering state of the intelligent connected vehicle on the test bench and testing its ABS performance.

[0049] In this invention, the main frame of the front and rear roller groups is mounted on a rotating platform. A geared motor assembly directly drives a rotary internal gear, causing the rotating platform to rotate horizontally by a certain angle. This changes the yaw angle of the intelligent connected vehicle being tested, simulating the driving state during emergency avoidance maneuvers and detecting its ABS performance, thus expanding the detection range of ABS for intelligent connected vehicles. The rotary internal gear at the center of the rotating platform directly meshes with the output gear of the transmission gearbox in the geared motor assembly, resulting in a compact structure and high transmission efficiency. The V-shaped track wheelset installed below the rotating platform and engaging with the annular guide rail uses steel V-shaped track wheelsets with a rubber coating on the surface, enhancing its support and positioning performance while reducing noise generated during platform rotation. By setting up the main frame of the roller group and a corresponding sliding mechanism, this invention ensures that one set of rollers can move relative to the other, thereby ensuring the effectiveness of wheelbase adjustment and adapting to intelligent connected vehicle models with different wheelbases. The control system dynamically adjusts the platform rotation angle based on the real-time directional rotation angle of the intelligent connected vehicle, making the simulation more accurate and the test data closer to the real values.

[0050] The above description is merely a preferred embodiment of the present invention and does not constitute any limitation on the technical scope of the present invention. Therefore, any minor modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention shall still fall within the scope of the technical solution of the present invention.

Claims

1. A motor-driven internal gear rotary intelligent connected vehicle ABS test bench, characterized in that, It includes a rotating platform (8), a ring guide rail (12), a geared motor assembly (10), a rotary internal gear (9), four roller assembly assemblies corresponding to the front and rear wheels of the vehicle, a front roller assembly main frame (5), a rear roller assembly main frame (6), a front roller assembly main frame guide rail (15), a front roller assembly frame (3), a rear roller assembly frame (4), a telescopic device (14), and a synchronous adjustment device (17). The annular guide rail (12) is fixedly connected to the foundation (13); the rotating platform (8) is rotatably connected to the annular guide rail (12), and the rotating platform (8) can rotate clockwise and counterclockwise along the annular guide rail (12) by a certain angle relying on the V-shaped track wheelset (19) installed below it; the rotary internal gear (9) is set at the center of the annular guide rail (12) and rigidly connected to the rotating platform (8); the geared motor assembly (10) is placed on the annular guide rail (12) or the foundation (13) and connected to the rotary internal gear (9); an angle encoder (18) is connected below the rotary internal gear (9) through a meshing gear. The front roller assembly main frame guide rail (15) is located on the upper part of one end of the rotating platform (8); the front roller assembly main frame (5) is movably connected to the front roller assembly main frame guide rail (15) for mounting the front roller assembly frame (3); the rear roller assembly main frame (6) is fixedly connected to the other end of the rotating platform (8) for mounting the rear roller assembly frame (4); one end of the telescopic device (14) is fixedly connected to the end of the front roller assembly main frame (5) near the rear roller assembly main frame (6), and the other end is fixedly connected to the corresponding end of the rear roller assembly main frame (6); the synchronous adjustment device (17) is also fixedly connected between the front / rear four roller assembly assemblies, and the synchronous adjustment device (17) extends or shortens with the telescopic device (14); The other end of the main frame (5) of the front roller assembly is fixedly connected to a movable overpass (7); the other end of the main frame (6) of the rear roller assembly is fixedly connected to a fixed overpass (1).

2. The electric motor direct-drive internal gear rotary intelligent connected vehicle ABS test bench according to claim 1, characterized in that, The V-shaped track wheelset (19) is installed on the periphery of the rotating platform (8) and is placed on the annular guide rail (12) during assembly.

3. The electric motor direct-drive internal gear rotary intelligent connected vehicle ABS test bench according to claim 1, characterized in that, The geared motor assembly (10) includes a motor and a transmission gearbox connected to the output end of the motor. The transmission gearbox has the functions of speed reduction and torque increase and power reversal, and meshes with the rotary internal gear (9) through its output gear. The torque output by the motor directly drives the rotary internal gear (9) to rotate through the transmission gearbox, thereby driving the rotating platform to rotate.

4. The electric motor direct-drive internal gear rotary intelligent connected vehicle ABS test bench according to claim 3, characterized in that, The rotating internal gear (9) is meshed with a sensing gear; and the sensing gear is connected to the angle encoder (18) for detecting the rotation angle of the sensing gear.

5. The electric motor direct-drive internal gear rotary intelligent connected vehicle ABS test bench according to claim 1, characterized in that, Each of the roller assembly includes a main roller (20) and a secondary roller (21) arranged in parallel and connected in drive, a sensing roller (22), a main roller bearing housing (23), a secondary roller bearing housing (24), and a flywheel assembly mounted on the front roller assembly frame (3) / the rear roller assembly frame (4); the main rollers (20) of the two roller assemblies corresponding to the front / rear wheels of the vehicle are coaxially arranged; The main roller bearing housing (23) and the auxiliary roller bearing housing (24) are both fixedly installed on the front roller assembly frame (3) / the rear roller assembly frame (4); the main roller (20) is fixedly installed on the front roller assembly frame (3) / the rear roller assembly frame (4) through the main roller bearing housing (23) set at both ends of the main roller (20); an auxiliary roller guide rail is installed on the front roller assembly frame (3) / the rear roller assembly frame (4), and an auxiliary roller base is fixedly installed on the auxiliary roller guide rail; the auxiliary roller (21) is installed on the auxiliary roller base through the auxiliary roller bearing housing (24) set at both ends of the auxiliary roller (21); The sensing roller (22) is installed in parallel between the main roller (20) and the auxiliary roller (21).

6. The electric motor direct-drive internal gear rotary intelligent connected vehicle ABS test bench according to claim 5, characterized in that, The synchronous adjustment device (17) includes a retractable universal drive shaft and T-shaped steering boxes (28) located at both ends of the retractable universal drive shaft; the two sides of the T-shaped steering box (28) are respectively connected to the two corresponding main rollers (20), and the retractable universal drive shaft is connected to the middle drive interface of the T-shaped steering box (28).

7. The electric motor direct-drive internal gear rotary intelligent connected vehicle ABS test bench according to claim 6, characterized in that, A drum clutch (29) is provided between the transmission interfaces on both sides of the T-shaped steering box (28) and the main drum (20).

8. The electric motor direct-drive internal gear rotary intelligent connected vehicle ABS test bench according to claim 5, characterized in that, The roller assembly also includes a roller center distance adjustment mechanism; one end of the roller center distance adjustment mechanism is fixed on the front roller assembly frame (3) / the rear roller assembly frame (4), and the other end is fixed on the auxiliary roller base; the roller center distance adjustment mechanism drives the auxiliary roller base to move along the auxiliary roller guide rail, for adjusting the center distance between the main roller (20) and the auxiliary roller (21).

9. The electric motor direct-drive internal gear rotary intelligent connected vehicle ABS test bench according to claim 5, characterized in that, The roller assembly includes a lifter (16) for adjusting the raising or lowering of the wheels; the lifter (16) is fixed on the front roller assembly frame (3) / the rear roller assembly frame (4), and a wheel lifting height sensor is installed at one end of it.

10. A direct-drive internal gear rotary intelligent connected vehicle ABS test bench according to claim 5, characterized in that, The flywheel assembly includes a flywheel (25), a flywheel bearing housing (27) for mounting the flywheel (25), and a flywheel clutch (26) fixed to one side of the flywheel (25); the flywheel bearing housing (27) is mounted on the front roller assembly frame (3) / the rear roller assembly frame (4); the flywheel clutch (26) is located between the flywheel (25) and the flywheel bearing housing (27), and on the side away from the main roller (20).

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