On-line detection device for ABS (anti-lock brake system) of automobile rear axle brake assembly

Abstract

The utility model discloses an on-line detection device for an ABS system of an automobile rear axle brake assembly, which comprises a portal frame arranged above a conveying line, a longitudinal beam capable of moving along the direction of the conveying line is arranged on the portal frame, a transverse beam capable of moving transversely is arranged on the longitudinal beam, and the transverse beam is connected to a supporting plate through a stand column. The supporting plate is connected with the detection device body through the height adjusting device and the rotation adjusting device. The detection device main body comprises a connecting device, a transmission device and a driving device, wherein the connecting device is connected with a detected brake assembly through a positioning sleeve and an extension arm; the transmission device comprises a transmission shaft connected with the positioning sleeve; the driving device is composed of a servo motor and a torque sensor. The device can perform efficient and accurate on-line detection on the ABS system of the automobile rear axle brake assembly.

Description

Technical Field

[0001] This utility model relates to the field of ABS systems for automotive rear axle braking assemblies, specifically to an online testing device for ABS systems for automotive rear axle braking assemblies. Background Technology

[0002] ABS (Anti-lock Braking System) is an automotive safety technology designed to prevent wheel lock-up during emergency braking, thus avoiding loss of vehicle control. The ABS system automatically adjusts braking force to ensure the wheels maintain a certain rotational speed during braking, preventing them from coming to a complete stop and avoiding wheel slippage. When manufacturing a rear axle brake assembly integrating ABS, the ABS system of the rear axle brake assembly needs to be tested to ensure its effectiveness and guarantee driving safety.

[0003] Current methods for testing the braking performance of automotive ABS include road testing. However, road testing facilities are expensive and time-consuming, making them suitable only for random checks of a portion of vehicles and not for regular testing of a large number of vehicles or vehicles already in use. CN2612579Y discloses a testing device for automotive anti-lock braking systems, which can compensate for the shortcomings of road testing. However, it still requires the vehicle to be driven into the testing device after assembly. If the ABS system of the vehicle is found to be faulty, replacing the device is difficult. Therefore, there is a need for a testing device that can test the ABS system of the rear axle braking assembly of a car on the production line. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by providing an online detection device for the ABS system of a car's rear axle braking assembly. The drive unit of the online detection device for the ABS system of a car's rear axle braking assembly drives the connecting device to rotate circumferentially through a transmission device, thereby causing the brake of the car's rear axle braking assembly to rotate circumferentially. By collecting signals from the ABS sensor and torque sensor of the car's rear axle braking assembly, the operating status of the ABS system is analyzed and detected.

[0005] The objective of this utility model is achieved through the following solution:

[0006] An online testing device for an ABS system of a rear axle brake assembly of an automobile includes a gantry extending laterally above a conveyor line for transporting the rear axle of the automobile, a longitudinal beam parallel to the conveyor line mounted on a guide rail of the gantry via a first pulley set, a horizontal mounting plate mounted on the guide rail of the longitudinal beam via a second pulley set, the horizontal mounting plate being connected to a support plate via a downwardly extending column, and the support plate being connected to the main body of the testing device via a height adjustment device and a rotation adjustment device;

[0007] The main body of the detection device includes

[0008] A connecting device, the connecting device including a positioning sleeve, the circumference of which is provided with multiple forward axially extending extension arms, the extension arms being used to circumferentially move the fixing bolts of the rear axle brake assembly of the automobile, the positioning sleeve being connected to the transmission device through a cover plate provided on the rear end face;

[0009] A transmission device, comprising a transmission shaft, the front end of which is circumferentially fixedly connected to the cover plate of the connecting device, and the rear end of which is connected to the drive device;

[0010] The drive device includes a servo motor and a torque sensor. The rotor shaft of the servo motor is connected to the first elastic shaft of the torque sensor, and the second elastic shaft at the other end of the torque sensor is connected to the transmission shaft of the transmission device.

[0011] Preferably, the transmission device of the connecting device is circumferentially fixed on the transmission shaft of the driving device, allowing axial movement.

[0012] Preferably, the cover plate is fixedly connected to the outer peripheral flange of the sliding hollow tube, which is fitted onto the front end of the drive shaft. Multiple bolts pass through the through holes in the sliding hollow tube and slide into multiple axially extending strip holes on the drive shaft. A compression spring is fitted onto the drive shaft, with its front end abutting against the sliding hollow tube and its rear end abutting against the flange on the drive shaft.

[0013] Preferably, the drive shaft is connected to the second elastic shaft of the torque sensor via a first coupling; and / or the first elastic shaft of the torque sensor is connected to the rotor shaft of the servo motor via a second coupling.

[0014] Preferably, the extension arm is provided with a bolt actuating block, which is used to increase the contact area between the extension arm and the fixing bolt of the brake assembly of the vehicle rear axle.

[0015] Preferably, a cushioning pad is attached to the outer surface of the extension arm and / or bolt actuating block of the connecting device.

[0016] Preferably, the height adjustment device includes a telescopic cylinder, which is disposed at the upper end of the support plate. Its piston rod passes downward through the support plate and is connected to the connecting frame of the support plate of the rotary adjustment device. The support plate is also provided with an upwardly extending guide shaft, and the support plate is slidably fitted on the guide shaft.

[0017] Preferably, the rotation adjustment device includes a rotating shaft and a bearing mounting base axially fixed on the rotating shaft. Two sets of angular contact ball bearings fitted onto the rotating shaft are installed in the bearing mounting base. The bottom end of the rotating shaft is hinged to the main body of the detection device through a hinge seat. The bearing mounting base is supported on a support plate by its flange. A connecting frame for connecting the height adjustment device is installed on the upper surface of the support plate.

[0018] Preferably, the torque sensor is supported in the housing of the connecting device by a bearing seat, the housing of the connecting device is connected to the rotation adjustment device by a hinge seat, the driving device is installed in the housing of the driving device, and the housing of the driving device is provided with a control handle.

[0019] Preferably, the torque sensor and the ABS sensor located on the rear axle brake assembly of the vehicle are both electrically connected to the data acquisition card of the industrial control computer on the conveyor line, and the industrial control computer and the servo motor are both electrically connected to the PLC.

[0020] The beneficial effects of this utility model are as follows:

[0021] This device is installed on the automotive rear axle production line and can directly test the performance of the ABS system of the automotive rear axle braking assembly on the production line, thereby significantly improving testing efficiency and reducing production costs and time consumption.

[0022] The outer surface of the extension arm and bolt actuation block is covered with a buffer pad, which can effectively prevent parts from being scratched or damaged due to contact during the testing process, thereby extending the service life of the automotive rear axle brake assembly.

[0023] The transmission device of the connecting device is circumferentially fixed on the drive shaft of the drive device and can move axially, which plays a certain buffering role and prevents the detection device from causing damage to the rear axle of the car in a collision.

[0024] The drive unit rotates the connecting device, thereby rotating the brake of the rear axle braking assembly. By collecting signals from the torque sensor and the ABS sensor of the rear axle braking assembly, and combining the signal processing of the industrial computer and PLC, multi-point data acquisition and analysis can be achieved, and the operating performance of the ABS system can be monitored in real time, significantly improving the detection accuracy and reliability. At the same time, the PLC can control the servo motor and the industrial computer simultaneously, resulting in a high degree of automation and high efficiency.

[0025] The crossbeam, height adjustment device, and rotation adjustment device enable the testing device to adapt to various automotive rear axle brake assembly specifications, improving the equipment's versatility. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of this utility model;

[0027] Figure 2 This is a side view of the present invention;

[0028] Figure 3 This is a schematic diagram of the main body of the detection device in this utility model;

[0029] Figure 4 This is a schematic diagram of the rotary adjustment device in this utility model. Detailed Implementation

[0030] like Figures 1 to 4 As shown, an online testing device for an ABS system of a rear axle braking assembly of an automobile includes a gantry 11 extending laterally above a conveyor line for transporting the rear axle. The gantry 11 consists of two parallel I-beams. Longitudinal beams 12, parallel to the conveyor line, are mounted on the I-beam guide rails of the gantry 11 via a first pulley block 13. There are two sets of longitudinal beams 12, respectively located on both sides of the gantry 11. Each set consists of two longitudinal beams 14. Two horizontal mounting plates 14 are mounted on the guide rails of the longitudinal beams 12 on both sides of the gantry 11 via a second pulley block 15, enabling longitudinal and lateral sliding adjustment. The horizontal mounting plate 14 is connected to the first support plate 17 via downwardly extending columns 16. Each horizontal mounting plate 14 has four downwardly extending columns 14. The first support plate 17 is connected to the main body of the detection device via a height adjustment device and a rotation adjustment device. The horizontal mounting plate 14 is equipped with a first brake cylinder. The piston rod of the first brake cylinder extends upward and can abut against the longitudinal beam 12 to perform a braking function. A connecting plate is provided between the longitudinal beams 12. A second brake cylinder is installed on the connecting plate. The piston rod of the second brake cylinder extends upward and can abut against the gantry frame to perform a braking function.

[0031] The height adjustment device includes a telescopic cylinder 51, which is disposed on the upper end of the first support plate 17. Its piston rod passes downward through the first support plate 17 and connects to the connecting frame 53 of the second support plate 52 of the rotation adjustment device. The second support plate 52 also has an upwardly extending guide shaft 54, which is slidably fitted onto the guide shaft 54. In this embodiment, the guide shaft 54 ​​is slidably fitted into a linear bearing provided in the second support plate 52. The rotation adjustment device includes a rotating shaft 61 and a bearing fixing seat 62 axially fixed on the rotating shaft 61. The upper end of the bearing fixing seat 62 is mounted on the rotating shaft 61. The round nut is limited, and the lower end is limited by the limiting boss provided on the rotating shaft 61. Two sets of angular contact ball bearings 63 are installed in the bearing fixing seat 62 and are fitted on the rotating shaft 61. The bottom end of the rotating shaft 61 is hinged to the main body of the detection device through the hinge seat 82. The bearing fixing seat 62 is supported on the second support plate 52 by its flange. The upper end face of the second support plate 52 is equipped with a connecting frame 53 for connecting the height adjustment device, and the lower end face is provided with two sets of U-shaped limiting seats. The free end of the U-shaped limiting seat cooperates with the extension arm of the limiting plate that is interference-fitted on the rotating shaft 61 to limit the rotation angle of the rotation adjustment device.

[0032] The main body of the detection device includes:

[0033] A connecting device is provided, which engages with the fixing bolts of the rear axle brake assembly of a vehicle. Power is provided by a drive unit to rotate the rear axle brake assembly. The device includes a positioning sleeve 21 with multiple forward-extending axial extension arms 22 around its circumference. These extension arms 22 are used to circumferentially move the fixing bolts of the rear axle brake assembly. The number of extension arms 22 matches the number of fixing bolts of the rear axle brake assembly to be tested. Each extension arm 22 has a bolt-moving block 221, which increases the contact area between the extension arm 22 and the fixing bolts of the rear axle brake assembly. Buffer pads 222 are attached to the outer surfaces of the extension arms 22 and / or the bolt-moving blocks 221. The positioning sleeve 21 is connected to a transmission device via a cover plate 23 on its rear end face.

[0034] The transmission device includes a transmission shaft 31. The transmission device of the connecting device is circumferentially fixed on the transmission shaft 31 of the driving device, which can move axially. The front end of the transmission shaft 31 is circumferentially fixedly connected to the cover plate 23 of the connecting device, and the rear end is connected to the driving device. The cover plate 23 is fixedly connected to the outer peripheral flange 321 of the sliding hollow tube 32. The sliding hollow tube 32 is fitted on the front end of the shaft of the transmission shaft 31. Multiple bolts pass through the through holes opened in the sliding hollow tube 32 and slide in the multiple axially extending strip holes 311 opened in the transmission shaft 31. A compression spring 33 is fitted on the transmission shaft 31. The front end of the compression spring 33 abuts against the sliding hollow tube 32, and the rear end abuts against the flange provided on the transmission shaft 31, thereby realizing that the transmission device can move axially and is circumferentially fixed on the transmission shaft 31 of the driving device.

[0035] The drive device includes a servo motor 41 and a torque sensor 42. The rotor shaft of the servo motor 41 is connected to the first elastic shaft 421 of the torque sensor 42, and the second elastic shaft 422 at the other end of the torque sensor 42 is connected to the transmission shaft 31 of the transmission device. The transmission shaft 31 is connected to the second elastic shaft 422 of the torque sensor 42 via a first coupling 43; and / or the first elastic shaft 421 of the torque sensor 42 is connected to the rotor shaft of the servo motor 41 via a second coupling 44.

[0036] The torque sensor 42 is supported in the housing 71 of the connecting device by a bearing seat 423. The housing 71 of the connecting device is connected to the rotation adjustment device by a hinge seat 82. The drive device is installed in the housing 72 of the drive device. The housing 72 of the drive device is provided with a control handle 73.

[0037] The torque sensor 42 and the ABS sensor located on the rear axle brake assembly of the vehicle are both electrically connected to the data acquisition card of the industrial control computer on the conveyor line. The industrial control computer and the servo motor 41 are both electrically connected to the PLC.

[0038] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications made to the present utility model by those skilled in the art without departing from the spirit of the present utility model shall fall within the protection scope of the present utility model.

Claims

1. An on-line detection device for ABS system of automobile rear axle brake assembly, comprising a portal frame (11) extending transversely above a conveying line for conveying automobile rear axle, characterized in that: The longitudinal beam (12) parallel to the conveying line is installed on the guide rail of the gantry (11) through the first pulley block (13), the horizontal mounting plate (14) is installed on the guide rail of the longitudinal beam (12) through the second pulley block (15), the horizontal mounting plate (14) is connected with the first support plate (17) through the downward extending column (16), the first support plate (17) is connected with the detection device body through the height adjusting device and the rotation adjusting device; The detection device body comprises: The connecting device comprises a positioning sleeve (21), a plurality of extension arms (22) extending axially forward are arranged on the circumference of the positioning sleeve (21), the extension arms (22) are used for circumferentially moving the fixing bolt of the automobile rear axle brake assembly brake, and the positioning sleeve (21) is connected with the transmission device through the cover plate (23) arranged on the rear end face. The transmission device comprises a transmission shaft (31), the transmission shaft (31) is circumferentially fixedly connected with the cover plate (23) of the connecting device at the front end, and the rear end is connected with the driving device. The driving device comprises a servo motor (41) and a torque sensor (42), the rotor shaft of the servo motor (41) is connected with the first elastic shaft (421) of the torque sensor (42), and the second elastic shaft (422) at the other end of the torque sensor (42) is connected with the transmission shaft (31) of the transmission device.

2. The on-line detection device for ABS system of automobile rear axle brake assembly according to claim 1, characterized in that: The transmission device of the connecting device is circumferentially fixed on the transmission shaft (31) of the driving device and can move axially.

3. The on-line detection device for ABS system of automobile rear axle brake assembly according to claim 2, characterized in that: The cover plate (23) is fixedly connected with the outer circumferential flange (321) of the sliding hollow tube (32), the sliding hollow tube (32) is sleeved on the front end of the shaft rod of the transmission shaft (31), a plurality of bolts pass through the through holes formed in the sliding hollow tube (32) and are slidably fitted in the plurality of axially extending strip-shaped holes (311) formed in the transmission shaft (31), the compression spring (33) is sleeved on the transmission shaft (31), the front end of the compression spring (33) abuts against the sliding hollow tube (32), and the rear end abuts against the flange formed on the transmission shaft (31).

4. The on-line detection device for ABS system of automobile rear axle brake assembly according to claim 1, characterized in that: The transmission shaft (31) is connected with the second elastic shaft (422) of the torque sensor (42) through the first coupling (43); and / or the first elastic shaft (421) of the torque sensor (42) is connected with the rotor shaft of the servo motor (41) through the second coupling (44).

5. The on-line detection device for ABS system of automobile rear axle brake assembly according to claim 1, characterized in that: The bolt moving block (221) is arranged on the extension arm (22), and the bolt moving block (221) is used for increasing the contact area of the extension arm (22) and the fixing bolt of the automobile rear axle brake assembly brake.

6. The on-line detection device for ABS system of automobile rear axle brake assembly according to claim 5, characterized in that: The extension arm (22) and / or the bolt moving block (221) are pasted with the buffer pad (222) on the outer surface.

7. The on-line detection device for ABS system of automobile rear axle brake assembly according to claim 1, characterized in that: The height adjusting device comprises a telescopic cylinder (51), the telescopic cylinder (51) is arranged on the upper end of the first support plate (17), the piston rod thereof passes through the first support plate (17) downward and is connected with the connecting frame (53) of the second support plate (52) of the rotation adjusting device, the second support plate (52) is further provided with the upward extending guide shaft (54), and the second support plate (52) is slidably fitted on the guide shaft (54).

8. The on-line detection device for ABS system of automobile rear axle brake assembly according to claim 1, characterized in that: The rotation adjusting device comprises a rotating shaft (61) and a bearing fixing seat (62) axially fixed on the rotating shaft (61), two groups of angular contact ball bearings (63) are installed in the bearing fixing seat (62) and sleeved on the rotating shaft (61), the bottom end of the rotating shaft (61) is hingedly connected with the main body of the detection device through a hinged seat (82), the bearing fixing seat (62) is supported on the second supporting plate (52) through a flange arranged thereon, and a connecting frame (53) for connecting the height adjusting device is installed on the upper end surface of the second supporting plate (52).

9. The on-line detection device for ABS system of automobile rear axle brake assembly according to claim 1, characterized in that: The torque sensor (42) is supported in the connecting device shell (71) through a bearing seat (423), the connecting device shell (71) is connected with the rotation adjusting device through the hinged seat (82), the driving device is installed in the driving device shell (72), and the driving device shell (72) is provided with a handle (73).

10. The on-line detection device for ABS system of automobile rear axle brake assembly according to claim 1, characterized in that: The torque sensor (42) and the ABS sensor arranged on the automobile rear axle brake assembly are electrically connected with the collection card of the industrial computer on the conveying line, and the industrial computer and the servo motor (41) are electrically connected with the PLC.

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