AMT gear shifting performance endurance test bench

Abstract

The utility model relates to AMT system test technical field, and specifically is a kind of AMT selects gear shifting performance endurance test bench, torque speed sensor is installed on sensor support, torque speed sensor side connects bearing seat and drive shaft assembly, bearing seat and drive shaft assembly other side are equipped with AMT clutch assembly, motor first base and motor second base are equipped in the both ends of rack base, drive motor can be flexibly installed in one base according to test condition, when motor is installed in motor first base, the output end of drive motor and torque speed sensor are connected, test tooling and inertia flywheel group are also installed on rack base, when motor is installed in second motor base according to test condition, inertia flywheel group other end is connected with drive motor output end, and the AMT gearbox TCU of matching AMT gearbox is installed on AMT gearbox assembly, and AMT gearbox TCU carries out interactive communication with motor control host computer through wire harness.

Description

Technical Field

[0001] This utility model relates to the field of AMT system testing technology, specifically an AMT shift performance durability test bench. Background Technology

[0002] An AMT (Automated Manual Transmission) system comprises an AMT transmission system and an AMT clutch system. Before being put into use, it requires testing for clutch engagement, shifting performance, and durability. The AMT clutch system, a crucial subsystem of the AMT transmission, is controlled by the clutch module within the AMT transmission's TCU (Tracking Control Unit). Its performance significantly impacts the AMT transmission's shifting and durability. Traditional testing separates the clutch system's engagement / disengagement performance and durability testing from the AMT transmission system's performance and durability testing. When testing the clutch system, the motor drives it on the input shaft side of the AMT transmission assembly, simulating engine power output; when testing the transmission system, it drives it on the output shaft side, simulating vehicle speed control conditions.

[0003] For example, Chinese utility model patent application CN216899626U discloses an AMT system test bench, including a cast iron platform, a servo motor, an air compressor, and an AMT gearbox. The cast iron platform is equipped with a first fixture, a second fixture, a third fixture, a fourth fixture, and a fifth fixture. The servo motor is mounted on the upper end of the first fixture, an input torque sensor is mounted on the upper end of the second fixture, a clutch assembly is mounted on the upper end of the third fixture, the AMT gearbox is mounted on the upper end of the fourth fixture, and the output end of the clutch assembly is connected to the AMT gearbox. An inertia wheel set is mounted on the upper end of the fifth fixture, and a fixture displacement adjustment device is mounted on one side of the fifth fixture. This utility model AMT system test bench is based on existing gearbox test benches and control systems, and adds an air compressor specifically for AMT gearboxes to achieve tests such as clutch engagement / disengagement testing, countershaft brake performance testing, and the status of related valves.

[0004] In existing technologies, the test bench cannot communicate with the TCU control board of the AMT transmission, and cannot adopt the actual vehicle control strategy to conduct clutch engagement and gear shifting performance durability tests in conjunction with the transmission system. It requires dual motors to drive the transmission input or output shaft during testing, which increases the equipment manufacturing cost. In existing technologies, the output of the test bench motor is often adjusted to different gears through a gearbox to achieve the torque output requirements at different speeds, which increases the maintenance and repair costs of the gearbox. Utility Model Content

[0005] In view of the above-mentioned problems in the prior art, the purpose of this utility model is to provide an AMT gear shifting performance durability test bench.

[0006] This utility model provides the following technical solution:

[0007] An AMT (Automated Manual Transmission) gear shifting performance durability test bench includes a bench base. A first motor base, a sensor bracket, and a bearing housing are sequentially mounted on the bench base. A torque-speed sensor is mounted on the sensor bracket. One side of the torque-speed sensor is connected to the bearing housing and a drive shaft assembly, and the other side of the bearing housing and drive shaft assembly is equipped with an AMT clutch assembly. An inertial flywheel assembly is also mounted on the bench base. The bench base also includes a motor control host computer. The first motor base and a second motor base are located at both ends of the bench base. The drive motor can be flexibly installed on one of the bases according to the test conditions. When the motor is installed on the first motor base, the drive motor... The output end of the machine is connected to a torque and speed sensor. A gearbox test fixture and an inertial flywheel assembly are also installed on the test bench base. An AMT gearbox assembly is installed on the gearbox test fixture. The AMT gearbox assembly is located between the AMT clutch assembly and the inertial flywheel assembly. The AMT gearbox assembly and the inertial flywheel assembly are connected. When the motor is installed on the second motor base according to the test conditions, the other end of the inertial flywheel assembly is connected to the output end of the drive motor. A matching AMT gearbox TCU is installed on the AMT gearbox assembly. The AMT gearbox TCU communicates with the motor control host computer through a wiring harness.

[0008] As a further technical solution, a No. 1 coupling and a No. 2 coupling are respectively installed at both ends of the torque and speed sensor. The other end of the No. 2 coupling is connected to the bearing housing and drive shaft assembly, and the output end of the drive motor is connected to the other end of the No. 1 coupling.

[0009] As a further technical solution, the first base of the motor is mounted on the push-pull mechanism of the first motor, and the test bench base is provided with T-slots distributed laterally and longitudinally. The push-pull mechanism of the first motor and the gearbox test fixture are fixed by the T-slots.

[0010] As a further technical solution, a slide base is also installed on the platform base, and a slide is slidably installed on the slide base. The inertia flywheel assembly is installed on the slide, and a second motor base is also installed on the slide. The second motor base is located on one side of the inertia flywheel assembly, and the drive motor is movably installed on the second motor base.

[0011] As a further technical solution, a No. 3 coupling and a No. 4 coupling are respectively installed on both sides of the inertial flywheel assembly. The other end of the No. 3 coupling is connected to the AMT gearbox assembly, and the other end of the No. 4 coupling is connected to the drive motor.

[0012] As a further technical solution, a lead screw assembly is installed inside the slide base, and a second motor push-pull mechanism is also installed on the platform base. The second motor push-pull mechanism is connected to the slide, the lead screw assembly is connected to the bottom end of the slide, and a second linear guide rail assembly is installed at the top of the slide base. The second linear guide rail assembly is connected to the bottom end of the slide.

[0013] As a further technical solution, one end of the lead screw assembly is connected to the lead screw handwheel, and the lead screw handwheel is installed at the front end of the slide base.

[0014] As a further technical solution, the motor control host computer is installed in a control cabinet, and a frequency converter is also installed in the control cabinet. The frequency converter is connected to the drive motor through a wiring harness.

[0015] As a further technical solution, the inertia flywheel assembly is provided with two inertia disks, and a first linear guide rail is installed on both sides of the inertia flywheel assembly. The first inertia disk suspension bracket and the second inertia disk suspension bracket are slidably connected to the first linear guide rail, and the inertia disk is placed inside the first inertia disk suspension bracket and the second inertia disk suspension bracket.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] The host computer for the control frame motor inverter is a TCU control board of an AMT transmission. It can communicate with the TCU control board of the AMT transmission under test. During transmission input shaft drive type tests, the transmission TCU control board sends torque or speed requests to the host computer of the motor inverter. The host computer of the motor inverter controls the motor to simulate engine power output, realizing AMT gear selection and shifting related tests with the clutch system and transmission system linkage. During transmission output shaft drive type tests, which simulate vehicle speed control conditions, an appropriate inertial load is added to the transmission output shaft to act as an energy storage flywheel to stabilize the motor output speed. According to the test conditions and the overall vehicle control strategy, the TCU of the AMT transmission under test sends a speed request to the motor control host computer, which then drives the motor to simulate... The TCU controls the clutch engagement and disengagement, as well as gear selection and shifting, based on the vehicle's shifting strategy, to complete relevant tests on the AMT transmission assembly's output shaft drive, meeting various test conditions. Both drive shafts on the test bench use star couplings with the same interface size. Depending on different test requirements, the motor position is reversed, and the coupling at the motor output end engages with the couplings at both drive shafts on the test bench to achieve reliable transmission, enabling drive of either the transmission input or output shaft. The test bench uses a high-power permanent magnet synchronous motor for direct drive instead of a low-power motor with a gearbox. Utilizing the constant torque output characteristic of the permanent magnet synchronous motor below its rated speed, it meets the requirement of low-speed, high-torque operation, reducing gearbox maintenance costs and failure rates while maintaining similar manufacturing costs. Attached Figure Description

[0018] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0019] Figure 1 This is a schematic diagram of the drive frame structure at the input shaft end of the gearbox of this utility model;

[0020] Figure 2 This is a schematic diagram of the drive frame structure at the output shaft end of the gearbox of this utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the slide table part of this utility model.

[0022] In the diagram: 1. Bench base; 2. First motor base; 3. Push-pull mechanism for motor 1; 4. Drive motor; 5. First coupling; 6. Torque and speed sensor; 7. Second coupling; 8. Bearing housing and drive shaft assembly; 9. AMT clutch assembly; 10. AMT gearbox assembly; 11. AMT gearbox TCU; 12. Third coupling; 13. Inertia flywheel assembly; 14. Fourth coupling; 15. Second motor base; 16. Push-pull mechanism for motor 2; 17. Motor control host computer; 18. Control cabinet; 19. Frequency converter; 20. Slide table base; 21. Slide table; 22. Lead screw handwheel; 23. Gearbox test fixture; 24. Sensor bracket; 25. Linear guide rail assembly 1; 26. Linear guide rail assembly 2; 27. Lead screw assembly; 28. Inertia disc suspension bracket 1; 29. ​​Inertia disc suspension bracket 2. Detailed Implementation

[0023] like Figure 1 and Figure 3 As shown, an AMT gear shifting performance durability test bench includes a bench base 1. A motor first base 2, a sensor bracket 24, and a bearing seat 8 are sequentially installed on the bench base 1. The bench base 1 has T-slots distributed laterally and longitudinally. The motor first base 2, the sensor bracket 24, and the bearing seat 8 are installed in the T-slots. A torque-speed sensor 6 is installed on the sensor bracket 24. One side of the torque-speed sensor 6 is connected to the bearing seat and the drive shaft assembly 8. Specifically, a first coupling 5 and a second coupling 7 are respectively installed at both ends of the torque-speed sensor 6. The other end of the second coupling 7 is connected to the bearing seat and the drive shaft assembly 8. The output end of the drive motor 4 is connected to the other end of the first coupling 5.

[0024] On the other side of the bearing housing and drive shaft assembly 8, an AMT clutch assembly 9 is installed. The first motor base 2 is installed on the first motor push-pull mechanism 3. The test bench base 1 has T-slots distributed laterally and longitudinally. The first motor push-pull mechanism 3 and the gearbox test fixture 23 are installed and fixed through the T-slots. The test bench base 1 is also equipped with the gearbox test fixture 23 and the inertia flywheel assembly 13. The gearbox test fixture 23 is equipped with the AMT gearbox assembly 10.

[0025] A drive motor 4 is movably mounted on the first base 2 of the motor. The output end of the drive motor 4 is connected to the torque and speed sensor 6. The AMT gearbox assembly 10 is connected to the inertial flywheel assembly 13. The other end of the inertial flywheel assembly 13 is connected to the drive motor 4. A matching AMT gearbox TCU 11 is mounted on the AMT gearbox assembly 10. The AMT gearbox TCU 11 communicates with the motor control host computer 17 through a wiring harness.

[0026] A slide base 20 is also installed on the platform base 1. A slide 21 is slidably installed on the slide base 20. An inertia flywheel assembly 13 is installed on the slide 21. A second motor base 15 is also installed on the slide 21. The second motor base 15 is located on one side of the inertia flywheel assembly 13. The drive motor 4 is movably installed on the second motor base 15.

[0027] The test bench base 1 has a first motor base 2 and a second motor base 15 at both ends. The drive motor 4 can be flexibly installed on one of the bases according to the test conditions. When the drive motor 4 is installed on the first motor base 2, the output end of the drive motor 4 is connected to the torque and speed sensor 6. When the drive motor 4 is installed on the second motor base 15 according to the test conditions, the other end of the inertial flywheel assembly 13 is connected to the output end of the drive motor 4.

[0028] A lead screw assembly 27 is installed inside the slide base 20. A second motor push-pull mechanism 16 is also installed on the frame base 1. The second motor push-pull mechanism 16 is connected to the slide 21. The lead screw assembly 27 is connected to the bottom end of the slide 21. Furthermore, one end of the lead screw assembly 27 is connected to the lead screw handwheel 22. The lead screw handwheel 22 is installed at the front end of the slide base 20 to achieve dual drive. A second linear guide rail assembly 26 is installed at the top of the slide base 20. The second linear guide rail assembly 26 is connected to the bottom end of the slide 21. The slide 21 is connected to the slide base 20 by the second linear guide rail assemblies 26 on both sides. A lead screw assembly 27 is installed at the bottom of the slide 21. By rotating the lead screw handwheel 22, it can move back and forth along the frame axis, which is convenient for the installation of AMT clutch assemblies 9 and AMT gearbox assemblies 10 of different models and specifications.

[0029] An inertia flywheel assembly 13 is also installed on the test bench base 1. The AMT gearbox assembly 10 is located between the AMT clutch assembly 9 and the inertia flywheel assembly 13. The inertia flywheel assembly 13 is equipped with two inertia discs. Linear guide rails 25 are installed on both sides of the inertia flywheel assembly 13. The first inertia disc suspension bracket 28 and the second inertia disc suspension bracket 29 are slidably connected to the first linear guide rail 25. The inertia discs are placed inside the first inertia disc suspension bracket 28 and the second inertia disc suspension bracket 29. During use, different inertia loads can be adjusted according to the test requirements. The first linear guide rail 25 is used for the axial movement of the first inertia disc suspension bracket 28 and the second inertia disc suspension bracket 29. When the two inertia discs of the inertia flywheel assembly 13 are not in use, the inertia discs can be suspended on the first inertia disc suspension bracket 28 and the second inertia disc suspension bracket 29 respectively.

[0030] The inertial flywheel assembly 13 is equipped with a No. 3 coupling 12 and a No. 4 coupling 14 on both sides. The other end of the No. 3 coupling 12 is connected to the AMT gearbox assembly 10, and the other end of the No. 4 coupling 14 is connected to the drive motor 4.

[0031] Preferably, the No. 1 coupling 5 and the No. 4 coupling 14 have the same interface size and can be used together.

[0032] The test bench also includes a motor control host computer 17, which is installed in a control cabinet 18. A frequency converter 19 is also installed in the control cabinet 18. The frequency converter 19 is connected to the drive motor 4 through a wiring harness. It can also be connected through a communication wiring harness for interactive communication. The frequency converter 19 is connected to the drive motor 4 through a wiring harness to control the motor 4 to output power according to the test requirements.

[0033] When performing durability tests related to gear selection on the input shaft drive of an AMT transmission, such as Figure 1 As shown:

[0034] Adjust the inertia load of the inertia flywheel assembly 13. Using the push-pull mechanism 3 of motor 1, move the first motor base 2 along the frame axis to disengage one side of the first coupling 5 at the output end of the drive motor 4 from the other side of the torque and speed sensor 6, leaving a safe installation distance to prevent collisions during hoisting of the drive motor 4. Hoist the drive motor 4 onto the first motor base 2, insert the positioning pin, and secure them with bolts. Guide blocks are installed on both sides of the first motor base 2 on the frame base 1 to control the error of the first motor base 2's movement along the frame axis. Using the push-pull mechanism 3 of motor 1, move the first motor base 2 along the frame axis to the normal engagement position of the first coupling 5. Insert the positioning pin and use the T-slot on the frame base 1, and use a pressure plate to fix the first motor base 2 onto the frame base 1.

[0035] During the test, based on the test conditions and the vehicle control strategy, the AMT transmission TCU11 sends a torque or speed request to the motor control host computer 17. The motor control host computer 17 sends corresponding instructions to the frequency converter 19, and the frequency converter 19 controls the drive motor 4 to output power. At the same time, the AMT transmission TCU11 controls the AMT clutch assembly 9 and the AMT transmission assembly 10 to perform clutch shifting actions through its own control system to complete the test.

[0036] When performing durability tests related to gear selection on the output shaft drive of an AMT transmission, such as Figure 1 As shown:

[0037] Adjust the inertia load of the inertia flywheel assembly 13, and hoist the drive motor 4 to the side of the second motor base 15. Ensure that the side of the fourth coupling 14 and the side of the first coupling 5 on the output shaft of the motor 4 are kept at a safe distance to prevent collision. Guide blocks are installed on both sides of the second motor base 15 on the support plate 21 to control the coaxiality of the motor output end and the flywheel assembly 13. Use the second motor push-pull mechanism 16 to adjust the axial position of the drive motor 4 so that the side of the first coupling 5 at the output end of the drive motor 4 is properly engaged with the side of the fourth coupling 14. Insert the positioning pin between the drive motor 4 and the second base 15 and tighten the fixing bolts of the drive motor 4.

[0038] During the test, based on the test conditions and the vehicle control strategy, the AMT transmission TCU11 sends a speed request to the motor control host computer 17, which in turn sends a corresponding command to the frequency converter 19. The frequency converter 19 controls the drive motor 4 to output power. At the same time, the AMT transmission TCU11, through its built-in control system, controls the AMT clutch assembly 9 and the AMT transmission assembly 10 to perform clutch shifting actions to complete the test.

[0039] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An AMT gear shifting performance durability test bench, comprising a bench base (1), wherein a first motor base (2), a sensor bracket (24), and a bearing housing (8) are sequentially mounted on the bench base (1), a torque-speed sensor (6) is mounted on the sensor bracket (24), one side of the torque-speed sensor (6) is connected to the bearing housing and a drive shaft assembly (8), and the other side of the bearing housing and drive shaft assembly (8) is mounted on an AMT clutch assembly (9), and an inertial flywheel assembly (13) is also mounted on the bench base (1), characterized in that, It also includes a motor control host computer (17), on which a drive motor (4) is movably mounted. The drive motor (4) is mounted on the first motor base (2), and the output end of the drive motor (4) is connected to the torque and speed sensor (6). A gearbox test fixture (23) and an inertial flywheel assembly (13) are also mounted on the test bench base (1). An AMT gearbox assembly (10) is mounted on the gearbox test fixture (23). The AMT gearbox assembly (10) is located on the AMT... Between the clutch assembly (9) and the inertial flywheel assembly (13), the AMT gearbox assembly (10) and the inertial flywheel assembly (13) are connected. The drive motor (4) is installed on the second motor base (15) according to the test conditions. The other end of the inertial flywheel assembly (13) is connected to the output end of the drive motor (4). The AMT gearbox assembly (10) is equipped with a matching AMT gearbox TCU (11). The AMT gearbox TCU (11) communicates with the motor control host computer (17) through the wiring harness.

2. The AMT shift performance durability test bench according to claim 1, characterized in that, The torque and speed sensor (6) is equipped with a first coupling (5) and a second coupling (7) at its two ends respectively. The other end of the second coupling (7) is connected to the bearing housing and drive shaft assembly (8), and the output end of the drive motor (4) is connected to the other end of the first coupling (5).

3. The AMT shift performance durability test bench according to claim 2, characterized in that, The first base (2) of the motor is installed on the first motor push-pull mechanism (3). The test bench base (1) has T-shaped slots distributed horizontally and vertically. The first motor push-pull mechanism (3) and the gearbox test fixture (23) are installed and fixed through the T-shaped slots.

4. The AMT shift performance durability test bench according to claim 3, characterized in that, A slide base (20) is also installed on the platform base (1), and a slide (21) is slidably installed on the slide base (20). The inertial flywheel assembly (13) is installed on the slide (21), and a second motor base (15) is also installed on the slide (21). The second motor base (15) is located on one side of the inertial flywheel assembly (13), and the drive motor (4) is movably installed on the second motor base (15).

5. The AMT shift performance durability test bench according to claim 4, characterized in that, The inertial flywheel assembly (13) is equipped with a No. 3 coupling (12) and a No. 4 coupling (14) on both sides respectively. The other end of the No. 3 coupling (12) is connected to the AMT gearbox assembly (10), and the other end of the No. 4 coupling (14) is connected to the drive motor (4).

6. The AMT shift performance durability test bench according to claim 4, characterized in that, A lead screw assembly (27) is installed inside the slide base (20). A second motor push-pull mechanism (16) is also installed on the platform base (1). The second motor push-pull mechanism (16) is connected to the slide (21). The lead screw assembly (27) is connected to the bottom end of the slide (21). A second linear guide assembly (26) is installed at the top of the slide base (20). The second linear guide assembly (26) is connected to the bottom end of the slide (21).

7. The AMT shift performance durability test bench according to claim 6, characterized in that, One end of the lead screw assembly (27) is connected to the lead screw handwheel (22), which is installed at the front end of the slide base (20).

8. The AMT shift performance durability test bench according to claim 1, characterized in that, The motor control host computer (17) is installed in the control cabinet (18), and the control cabinet (18) is also equipped with a frequency converter (19). The frequency converter (19) is connected to the drive motor (4) through a wiring harness.

9. The AMT shift performance durability test bench according to claim 1, characterized in that, The inertia flywheel assembly (13) is provided with two inertia disks. Linear guide rails (25) are installed on both sides of the inertia flywheel assembly (13). Inertia disk suspension bracket one (28) and inertia disk suspension bracket two (29) are slidably connected to the linear guide rail (25). The inertia disks are placed inside the inertia disk suspension bracket one (28) and inertia disk suspension bracket two (29).

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