A dual-clutch shaft structure test bench and its application

Abstract

The present invention discloses a dual-clutch shaft system structure test bench and its application, belonging to the field of test benches. The dual-clutch shaft system structure test bench of the present invention is a test bench compatible with AMT and MT tests, and is composed of an input shaft system, an MT bearing seat, an MT clutch, a release bearing, an AMT bearing seat and an AMT clutch. The power of the input motor is first transmitted to the input shaft system, and the input shaft system is used to calibrate the input torque, and then the input shaft system is transmitted to the MT bearing seat, the MT clutch, the AMT bearing seat, and the AMT clutch in sequence. Finally, the AMT clutch transmits the power to the input shaft of the MT or AMT, and the release bearing is used to switch the opening and closing state of the MT clutch. The dual-clutch shaft system structure of the present invention is compatible with AMT and MT tests, which solves the incompatibility of the test bench with AMT and MT tests, combines the two types of benches into one, and greatly reduces the equipment cost and space occupation of the transmission test.

Description

Technical Field

[0001] The invention belongs to the field of test benches, in particular to a dual-clutch shaft system structure test bench and application thereof. Background Art

[0002] The heavy-duty truck transmission converts the power input from the engine into different torque outputs through a combination of gears with different speed ratios to adapt to different road conditions and driving conditions. After the transmission is assembled, it needs to be tested on a test bench to ensure that the transmission shifts smoothly, without knocking or abnormal noise, that the actual speed ratio of each gear meets the required range, and that the NVH (noise, vibration, and harshness) performance meets the requirements. If the above problems are found during the test, it means that the transmission is defective and needs to be repaired. Transmission testing avoids the outflow of unqualified products and is an indispensable part of transmission quality control.

[0003] MT (manual transmission) and AMT (automatic mechanical transmission) are widely used in the field of heavy-duty truck transmissions. MT and AMT both account for a large proportion of the transmissions currently produced. However, the shifting process of MT and AMT is different. MT is manual shifting. Before shifting, the clutch needs to be stepped on to cut off the power transmission between the engine and the transmission, and then the shift rocker arm is manually moved to drive the fork shaft to move. The fork shaft is connected to the synchronizer. Different gear sets are selected through the movement of the synchronizer to achieve shifting. AMT is automatic shifting. The SCU (shift control unit) issues a shift command to drive the CPCA (central pneumatic clutch actuator) to move instead of the action of stepping on the clutch, cutting off the power transmission between the engine and the transmission, and then pneumatically driving the fork shaft to move, so that the synchronizer and different gear sets cooperate to achieve shifting. Due to the different shifting operations of MT and AMT, the shaft system structure of the test benches of the two is also different. The clutch opening and closing of the MT bench is manually switched, while the clutch opening and closing of the AMT bench is automatically switched. At present, the MT test bench can only test MT, and the AMT test bench can only test AMT.

[0004] Therefore, it is of great significance to develop a test bench that is compatible with AMT and MT tests, which can greatly reduce the equipment cost and space occupancy of transmission testing. Summary of the invention

[0005] The purpose of the present invention is to overcome the above-mentioned shortcomings of the prior art and provide a dual-clutch shaft system structure test bench and its application.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A dual-clutch shaft system structure test bench, comprising an input slide rail, a transmission slide rail, an output slide rail and a mounting frame panel;

[0008] An input motor, an input shaft system, an MT bearing seat, an MT clutch, a release bearing, an AMT bearing seat and an AMT clutch are sequentially slidably arranged on the input slide rail from one end to the other end, and the input motor, the input shaft system, the MT bearing seat, the MT clutch, the release bearing, the AMT bearing seat and the AMT clutch are sequentially connected;

[0009] The release bearing is provided with a cylinder and a connecting rod, and the release shaft is used to switch the MT clutch on and off;

[0010] An output bearing seat, an output shaft system and an output motor are provided on the output slide rail, sliding from one end to the other end in sequence;

[0011] The input slide rail and the output slide rail are arranged side by side, a mounting frame panel and a transmission slide rail are arranged between the input slide rail and the output slide rail, and a transmission is arranged to slide on the transmission slide rail;

[0012] The input shaft of the transmission is arranged opposite to the AMT clutch, the flange of the transmission is arranged opposite to the output bearing seat, and an oil pressure locking piece is arranged at one end of the input shaft of the transmission facing the mounting frame panel.

[0013] Further, the input motor is used to simulate the power output of the engine;

[0014] Furthermore, the output motor is used to simulate the resistance of going uphill or carrying load.

[0015] Furthermore, when testing, the input shaft of the transmission is connected to the AMT clutch, and the flange of the transmission is connected to the output bearing seat.

[0016] Furthermore, the oil pressure locking member on the mounting frame panel presses the transmission, thereby fixing the transmission.

[0017] The application of dual-clutch shaft structure test bench is used for AMT test or MT test.

[0018] Furthermore, when used for AMT testing, the specific operations are:

[0019] The cylinder does not work, the release bearing is always in place, the MT clutch is always closed, and the AMT bearing seat always maintains power input;

[0020] During the shift test, the SCU of the transmission issues a shift command, the CPCA of the transmission pushes the AMT clutch, the AMT clutch is released, and the power is cut off at the AMT clutch;

[0021] The transmission automatically completes the gear shifting operation under pneumatic drive;

[0022] After the gear shift is completed, the CPCA of the transmission returns to its original position, the AMT clutch recloses, the power is restored, and the test of the corresponding gear begins.

[0023] Furthermore, when used for MT testing, the specific operations are:

[0024] The AMT clutch is always closed, and the AMT clutch and transmission are always in a power connection state;

[0025] During the gear shift test, the cylinder moves, causing the release bearing to push the MT clutch through the connecting rod, causing the MT clutch to loosen and the power to be cut off at the MT clutch;

[0026] Manually shift the transmission shift rocker arm to complete the gear shift;

[0027] After the gear shift is completed, the cylinder moves and drives the release bearing back to its original position through the connecting rod. The MT clutch closes again, the power is restored, and the test of the corresponding gear begins.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] The dual-clutch shaft system structure test bench of the present invention is a test bench compatible with AMT and MT tests, and is composed of an input shaft system, an MT bearing seat, an MT clutch, a release bearing, an AMT bearing seat and an AMT clutch. The power of the input motor is first transmitted to the input shaft system, and the input shaft system is used to calibrate the input torque, and then the input shaft system is sequentially transmitted to the MT bearing seat, the MT clutch, the AMT bearing seat, and the AMT clutch. Finally, the AMT clutch transmits the power to the input shaft of the MT or AMT, and the release bearing is used to switch the opening and closing state of the MT clutch. The dual-clutch shaft system structure of the present invention is compatible with AMT and MT tests, solves the incompatibility of the test bench with AMT and MT tests, combines the two types of benches into one, and greatly reduces the equipment cost and space occupation of the transmission test.

[0030] The dual-clutch shaft system structure test bench of the present invention is used to test AMT and MT, and the switching operation is simple and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a structural diagram of the present invention.

[0032] Among them: 1-input motor; 2-input shaft system; 3-MT bearing seat; 4-MT clutch; 5-release bearing; 6-AMT bearing seat; 7-AMT clutch; 8-mounting frame panel; 9-transmission; 10-output bearing seat; 11-output shaft system; 12-output motor; 13-connecting rod; 14-cylinder; 15-hydraulic locking piece; 16-input slide rail; 17-transmission slide rail; 18-output slide rail. DETAILED DESCRIPTION

[0033] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme 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, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0034] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0035] MT is a manual gear shift, and when shifting gears, you need to step on the clutch first and then shift gears manually; AMT is an automatic gear shift, and the SCU issues a gear shift command, drives the CPCA to push the clutch, replaces the action of stepping on the clutch by a person, and then pneumatically and automatically performs the gear shift operation. Therefore, the MT test bench needs to have a release bearing between the clutch and the transmission input shaft, and the clutch opening and closing state is switched by the movement of the release bearing, and then the gear shift operation is completed manually. However, the AMT test bench does not need a release bearing. The CPCA mechanism of the AMT plays the role of a release bearing. After the SCU issues a gear shift command, the CPCA is pneumatically driven to move to switch the clutch opening and closing state, and then the transmission automatically completes the gear shift process. It can be seen that the presence or absence of a release bearing is one of the main differences between the AMT and MT test benches. According to the gear shifting process of MT and AMT and the structural characteristics of their respective test benches, the present invention designs a dual-clutch shaft system structure test bench.

[0036] The present invention is further described in detail below in conjunction with the accompanying drawings:

[0037] See also Figure 1 , Figure 1It is a structural schematic diagram of a dual-clutch shaft system structure test bench of the present invention, including an input slide rail 16, a transmission slide rail 17, an output slide rail 18 and a mounting frame panel 8. An input motor 1, an input shaft system 2, an MT bearing seat 3, an MT clutch 4, a release bearing 5, an AMT bearing seat 6 and an AMT clutch 7 are sequentially slidably arranged on the input slide rail 16 from one end to the other end. The input motor 1, the input shaft system 2, the MT bearing seat 3, the MT clutch 4, the release bearing 5, the AMT bearing seat 6 and the AMT clutch 7 are sequentially connected. The release bearing 5 pushes the MT clutch 4 driven by the cylinder 14 and the connecting rod 13 to switch the opening and closing of the MT clutch 4.

[0038] An output bearing seat 10, an output shaft system 11 and an output motor 12 are provided on the output slide rail 18 to slide sequentially from one end to the other end;

[0039] The input slide rail 16 and the output slide rail 18 are arranged side by side, and a mounting frame panel 8 and a transmission slide rail 17 are arranged between the input slide rail 16 and the output slide rail 18, and a transmission 9 is arranged to slide on the transmission slide rail 17;

[0040] The input shaft of the transmission 9 is arranged opposite to the AMT clutch 7 , the flange of the transmission 9 is arranged opposite to the output bearing seat 10 , and an oil pressure locking member 15 is provided at one end of the input shaft of the transmission 9 facing the mounting frame panel 8 .

[0041] The test bench of the dual-clutch shaft system structure of the present invention is provided with input power by the input motor 1 to simulate the power transmitted to the transmission by the engine; the output motor 12 provides resistance to simulate the resistance of uphill or load; the input shaft system 2 and the output shaft system 11 play the role of transmitting power; the mounting frame panel 8 is fixed, and the oil pressure locking member 15 thereon presses the transmission 9 during the test to fix the transmission 9; the dual-clutch shaft system structure is mainly composed of the input shaft system 2, the MT bearing seat 3, the MT clutch 4, the release bearing 5, the AMT bearing seat 6, and the AMT clutch 7, and the shaft system structure can move on the input slide rail 16; the release bearing 5 pushes the MT clutch 4 driven by the cylinder 14 and the connecting rod 13 to switch the opening and closing state of the MT clutch 4; the transmission 9 can move on the transmission slide rail 17, and during the test, the input shaft on the left is connected to the AMT clutch 7, and the flange on the right is connected to the output bearing seat 10; the output part is composed of the output bearing seat 10, the output shaft system 11 and the output motor 12, and can move on the output slide rail 18.

[0042] The installation method of the test bench of the dual-clutch shaft system structure of the present invention:

[0043] When testing, the transmission 9 is first moved to the left to the mounting frame panel 8, and the oil pressure locking member 15 presses the transmission 9;

[0044] The dual-clutch shaft system structure moves rightward on the input slide rail 16 to the mounting frame panel 8, and the input shaft of the transmission 9 is connected to the AMT clutch 7 to complete the power input of the transmission 9;

[0045] The output part moves to the left, and is connected to the flange of the transmission 9 and the output bearing seat 10, thus completing the loading resistance connection of the transmission 9;

[0046] The input motor 1 and the output motor 12 start to operate, and the transmission test begins.

[0047] The testing method of the test bench of the dual-clutch shaft system structure of the present invention comprises the following operations:

[0048] When the dual clutch shaft test bench is used for AMT testing, the process is as follows:

[0049] The cylinder 14 does not work, the release bearing 5 is always in the original position, the MT clutch 4 is always closed, and the AMT bearing seat 7 always maintains power input;

[0050] During the gear shift test, the transmission 9SCU issues a gear shift command, CPCA quickly pushes the AMT clutch 7, the AMT clutch 7 is loosened, and the bench power is cut off at the AMT clutch 7;

[0051] The transmission 9 automatically completes the gear shifting operation under pneumatic drive;

[0052] After the gear shift is completed, CPCA returns to its original position, the AMT clutch 7 is closed again, the bench power is restored, and the test of this gear position begins.

[0053] When the dual clutch shafting test bench is used for MT testing, the process is as follows:

[0054] The AMT clutch 7 is always closed, and the AMT clutch 7 and the transmission 9 are always in a power connection state;

[0055] During the gear shift test, the cylinder 14 moves, and the release bearing 5 pushes the MT clutch 4 through the connecting rod 13, and the MT clutch 4 is loosened, and the bench power is cut off at the MT clutch 4;

[0056] Manually shift the gearbox 9 shift rocker arm to complete the gear shift;

[0057] After the gear shift is completed, the cylinder 14 moves, driving the release bearing 5 back to its original position through the connecting rod 13, the MT clutch 4 is closed again, the bench power is restored, and the test of this gear position begins.

[0058] The above contents are only for explaining the technical idea of ​​the present invention and cannot be used to limit the protection scope of the present invention. Any changes made on the basis of the technical solution in accordance with the technical idea proposed by the present invention shall fall within the protection scope of the claims of the present invention.

Claims

1. A dual-clutch shaft structure test bench, characterized in that: It comprises an input slide rail (16), a transmission slide rail (17), an output slide rail (18) and a mounting frame panel (8); An input motor (1), an input shaft system (2), an MT bearing seat (3), an MT clutch (4), a release bearing (5), an AMT bearing seat (6) and an AMT clutch (7) are sequentially slidably arranged on the input slide rail (16) from one end to the other end, and the input motor (1), the input shaft system (2), the MT bearing seat (3), the MT clutch (4), the release bearing (5), the AMT bearing seat (6) and the AMT clutch (7) are sequentially connected; The release bearing (5) is provided with a cylinder (14) and a connecting rod (13), and the release bearing (5) is used to switch the opening and closing of the MT clutch (4); An output bearing seat (10), an output shaft system (11) and an output motor (12) are provided on the output slide rail (18) so as to slide in sequence from one end to the other end; An input slide rail (16) and an output slide rail (18) are arranged side by side, a mounting frame panel (8) and a transmission slide rail (17) are arranged between the input slide rail (16) and the output slide rail (18), and a transmission (9) is arranged to slide on the transmission slide rail (17); The input shaft of the transmission (9) is arranged opposite to the AMT clutch (7), the flange of the transmission (9) is arranged opposite to the output bearing seat (10), and an oil pressure locking member (15) is arranged at one end of the input shaft of the transmission (9) facing the mounting frame panel (8).

2. The dual-clutch shaft system structure test bench according to claim 1, characterized in that: The input motor (1) is used to simulate the power output of the engine.

3. The dual-clutch shaft structure test bench according to claim 1, characterized in that: The output motor (12) is used to simulate the resistance of going uphill or carrying a load.

4. The dual-clutch shaft system structure test bench according to claim 1, characterized in that: When testing, the input shaft of the transmission (9) is connected to the AMT clutch (7), and the flange of the transmission (9) is connected to the output bearing seat (10).

5. The dual-clutch shaft system structure test bench according to claim 4, characterized in that: The oil pressure locking member (15) on the mounting frame panel (8) presses the transmission (9) to fix the transmission (9).

6. An application of the dual-clutch shaft structure test bench according to any one of claims 1 to 5, characterized in that: For use in performing AMT testing or for use in performing MT testing.

7. The application of the dual-clutch shaft structure test bench according to claim 6 is characterized in that: When used for AMT testing, the specific operations are: The cylinder (14) is not working, the release bearing (5) is always in the original position, the MT clutch (4) is always closed, and the AMT bearing seat (6) always maintains power input; During the gear shift test, the SCU of the transmission (9) issues a gear shift command, the CPCA of the transmission (9) pushes the AMT clutch (7), the AMT clutch (7) is released, and the power is cut off at the AMT clutch (7); The transmission (9) automatically completes the gear shifting operation under pneumatic drive; After the gear shift is completed, the CPCA of the transmission (9) returns to its original position, the AMT clutch (7) is closed again, the power is restored, and the test of the corresponding gear position begins.

8. The application of the dual-clutch shaft system structure test bench according to claim 6 is characterized in that: When used for MT testing, the specific operations are: The AMT clutch (7) is always closed, and the AMT clutch (7) and the transmission (9) are always in a power connection state; During the gear shift test, the cylinder (14) moves, causing the release bearing (5) to push the MT clutch (4) through the connecting rod (13), and the MT clutch (4) is loosened, and the power is cut off at the MT clutch (4); Manually shifting the gearshift rocker arm of the transmission (9) to complete the gear shift; After the gear shift is completed, the cylinder (14) moves, driving the release bearing (5) back to its original position through the connecting rod (13), the MT clutch (4) is closed again, the power is restored, and the test of the corresponding gear position begins.

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