CN115356130A - A test bench with double clutch shaft system structure and its application - Google Patents

Abstract

The invention discloses a test run rack with a double-clutch shafting structure and application thereof, and belongs to the field of test run racks. The invention discloses a test-run bench with a double-clutch shaft system structure, which is compatible with AMT and MT tests and comprises an input shaft system, an MT bearing seat, an MT clutch, a release bearing, an AMT bearing seat and an AMT clutch. The double-clutch shafting structure compatible with AMT and MT tests solves the incompatibility of the test-run rack to the AMT and MT tests, combines the two types of racks into one, and greatly reduces the equipment cost and the space occupation of the transmission test.

Description

A test bench with double clutch shaft system structure and its application

technical field

The invention belongs to the field of test benches, in particular to a test bench with a double-clutch shaft system structure and an application thereof.

Background technique

The heavy-duty transmission converts the input power of the engine into different torque outputs through gear combinations of different speed ratios to adapt to different road conditions and driving conditions. After the transmission is assembled, it needs to be tested on the test bench to ensure smooth shifting of the transmission, no knocking, no abnormal noise, the actual speed ratio of each gear meets the required range, and NVH (noise, vibration, harshness) performance Meet the requirements etc. 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.

In the field of heavy truck transmissions, MT (manual transmission) and AMT (automatic mechanical transmission) are widely used, and both MT and AMT occupy a large proportion of the transmissions produced at this stage. The shift process of MT and AMT is different. MT is a manual gear shift. Before shifting gears, you need to step on the clutch to cut off the power transmission between the engine and the transmission, and then manually toggle the shift rocker arm to drive the movement of the shift fork shaft. The shift fork shaft is connected to the synchronizer. Through the synchronizer The movement selects different gear sets to achieve gear shifting. AMT is automatic gear shifting. The SCU (Shift Control Unit) issues gear shifting commands to drive the CPCA (Central Pneumatic Clutch Actuator) to replace the action of people stepping on the clutch, cut off the power transmission between the engine and the transmission, and then drive it pneumatically. The movement of the shift fork shaft makes the synchronizer cooperate with different gear sets to realize gear shifting. Due to the different shifting operations of MT and AMT, the shafting structures of the test benches of the two are 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.

Therefore, it is of great significance to develop a test bench compatible with AMT and MT testing, which can greatly reduce the equipment cost and space occupation of transmission testing.

Contents of the invention

The purpose of the present invention is to overcome the above-mentioned shortcoming of prior art, provide a kind of double-clutch shafting structure test bench and its application.

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

A test bench with a double clutch shaft system structure, including an input slide rail, a transmission slide rail, an output slide rail and a mounting frame panel;

Sliding from one end to the other end on the input slide rail, there are input motor, input shafting, MT bearing seat, MT clutch, release bearing, AMT bearing seat and AMT clutch. The input motor, input shafting, MT bearing seat , MT clutch, release bearing, AMT bearing seat and AMT clutch are connected in sequence;

The release bearing is provided with a cylinder and a connecting rod, and the release shaft is used to switch the opening and closing of the MT clutch;

On the output slide rail, there are output bearing housing, output shafting and output motor that slide from one end to the other in turn;

The input slide rail and the output slide rail are arranged side by side, the installation frame panel and the transmission slide rail are arranged between the input slide rail and the output slide rail, and the transmission slide is provided on the transmission slide rail;

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 the input shaft end of the transmission facing the mounting frame panel is provided with an oil pressure lock piece.

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

Further, the output motor is used for simulating the resistance of going uphill or load.

Further, when testing, the input shaft of the transmission is connected with the AMT clutch, and the flange of the transmission is connected with the output bearing seat.

Further, the oil pressure locking part on the panel of the installation frame presses the transmission, thereby fixing the transmission.

The application of the double-clutch shafting structure test bench is used for AMT test or MT test.

Further, when used for AMT testing, the specific operation is:

The cylinder does not work, the release bearing is always in the original position, the MT clutch is always closed, and the AMT bearing seat always maintains power input;

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;

Under the pneumatic drive, the transmission can automatically complete the gear shifting operation;

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

Further, when used for MT testing, the specific operation is:

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

During the shift test, the cylinder moves, the release bearing pushes the MT clutch through the connecting rod, the MT clutch is loosened, and the power is cut off at the MT clutch;

Manually move the transmission shift rocker to complete the shift;

After the gear shift is completed, the cylinder moves, and the release bearing is driven back to the original position through the connecting rod, the MT clutch is closed again, the power is restored, and the test of the corresponding gear is started.

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

The double-clutch shafting structure test bench of the present invention is a test bench compatible with AMT and MT testing, and is composed of an input shafting system, an MT bearing seat, an MT clutch, a release bearing, an AMT bearing seat and an AMT clutch, and the power of the input motor Firstly, it is transmitted to the input shaft system, which is used to calibrate the input torque, and then the input shaft system transmits the power to the MT bearing seat, MT clutch, AMT bearing seat, and AMT clutch in turn, and finally the AMT clutch transmits the power to the MT Or the input shaft of the AMT, the release bearing is used to switch the open and close state of the MT clutch. The invention is compatible with the double-clutch shafting structure of AMT and MT tests, solves the incompatibility of the test bench for AMT and MT tests, and combines the two types of benches into one, greatly reducing the equipment cost and space occupation of the transmission test .

The application of the double-clutch axle system structure test bench of the present invention is used for testing AMT and MT, and the switching operation is simple and convenient.

Description of drawings

Fig. 1 is a structural diagram of the present invention.

Among them: 1-input motor; 2-input shafting; 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 shafting; 12-Output motor; 13-Connecting rod; 14-Cylinder; rail.

Detailed ways

In order to enable those skilled in the art to better understand the solutions of the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only It is an embodiment of a part of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

It should be noted that the terms "first" and "second" in the description and claims of the present invention and the above drawings are used to distinguish similar objects, but not necessarily used to describe a specific sequence or sequence. It is to be understood that the data so used are interchangeable under appropriate circumstances such that the embodiments of the invention described herein can be practiced in sequences other than those illustrated or described herein. Furthermore, the terms "comprising" and "having", as well as any variations thereof, are intended to cover a non-exclusive inclusion, for example, a process, method, system, product or device comprising a sequence of steps or elements is not necessarily limited to the expressly listed instead, may include other steps or elements not explicitly listed or inherent to the process, method, product or apparatus.

MT is manual gear shifting. When shifting gears, you need to step on the clutch first and then manually shift gears; AMT is automatic gear shifting. The SCU issues gear shifting commands to drive CPCA to push the clutch, instead of the action of people stepping on the clutch, and then automatically executes it pneumatically. Shift operation. Therefore, the MT test bench needs a release bearing between the clutch and the transmission input shaft. The clutch opening and closing state is switched through the movement of the release bearing, and then the shifting operation is completed manually. 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 shift command, the pneumatic drive CPCA moves to switch the clutch opening and closing state, and then the transmission automatically completes the shift process. It can be seen that the presence or absence of release bearings is one of the main differences between AMT and MT stands. According to the shifting process of MT and AMT and the structural features of their respective test benches, the present invention designs a test bench with dual-clutch shaft system structure.

The present invention is described in further detail below in conjunction with accompanying drawing:

Referring to Fig. 1, Fig. 1 is the structural representation of the double-clutch shafting structure test bench of the present invention, including input slide rail 16, transmission slide rail 17, output slide rail 18 and mounting frame panel 8, on the input slide rail 16 by one end Sliding to the other end in sequence, there are input motor 1, input shafting 2, MT bearing housing 3, MT clutch 4, release bearing 5, AMT bearing housing 6 and AMT clutch 7, the input motor 1 is input shafting 2, MT The bearing housing 3, the MT clutch 4, the release bearing 5, the AMT bearing housing 6 and the AMT clutch 7 are connected in sequence, and the release bearing 5 is driven by the cylinder 14 and the connecting rod 13 to push the MT clutch 4 for switching the opening and closing of the MT clutch 4. combine;

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

The input slide rail 16 and the output slide rail 18 are arranged side by side, the mounting frame panel 8 and the transmission slide rail 17 are arranged between the input slide rail 16 and the output slide rail 18, and the transmission slide rail 17 is slided with a transmission 9;

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 the input shaft end of the transmission 9 facing the mounting frame panel 8 is provided with an oil pressure lock 15.

The test bench of the dual-clutch shafting structure of the present invention provides input power by the input motor 1, simulating the power transmitted from the engine to the speed changer; the resistance is provided by the output motor 12, simulating the resistance of uphill or load; the input shafting 2 and the output shaft The system 11 plays the role of power transmission; the mounting frame panel 8 is fixed, and the oil pressure lock 15 on it presses the transmission 9 during the test, and plays the role of fixing the transmission 9; the double-clutch shaft system structure is mainly composed of the input shaft system 2. MT bearing seat 3, MT clutch 4, release bearing 5, AMT bearing seat 6, and AMT clutch 7. The shafting structure can move on the input slide rail 16; the release bearing 5 is driven by the cylinder 14 and the connecting rod 13 Push the MT clutch 4 to switch the opening and closing state of the MT clutch 4; the transmission 9 can move on the transmission slide rail 17. 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 The seat 10 is connected; the output part is composed of the output bearing seat 10, the output shafting 11 and the output motor 12, which can move on the output slide rail 18.

The installation method of the test bench of the dual-clutch shafting structure of the present invention:

When testing, the transmission 9 first moves to the left to the mounting frame panel 8, and the oil pressure lock 15 presses the transmission 9;

The dual-clutch shafting structure moves to the right 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;

The output part moves to the left until the flange of the transmission 9 is connected to the output bearing seat 10 to complete the load resistance connection of the transmission 9;

The input motor 1 and the output motor 12 start to work, and the transmission test starts.

The test method of the test bench of the dual-clutch shafting structure of the present invention comprises the following operations:

When the dual-clutch shafting bench is used for AMT testing, the procedure is as follows:

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

During the shift test, the transmission 9SCU issued a shift command, the CPCA quickly pushed the AMT clutch 7, the AMT clutch 7 was loosened, and the bench power was cut off at the AMT clutch 7;

The transmission 9 automatically completes the shift operation under the pneumatic drive;

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

When a dual-clutch shafting bench is used for MT testing, the procedure is as follows:

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

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

Manually toggle the shift rocker arm of the transmission 9 to complete the shift;

After the gear shifting is completed, the cylinder 14 moves, and the release bearing is driven 5 back to the original position by the connecting rod 13, the MT clutch 4 is closed again, the power of the bench is restored, and the test of the gear is started.

The above content is only to illustrate the technical ideas of the present invention, and cannot limit the protection scope of the present invention. Any changes made on the basis of the technical solutions according to the technical ideas proposed in the present invention shall fall within the scope of the claims of the present invention. within the scope of protection.

Claims (8)

1. A double-clutch shafting structure test bench is characterized in that it comprises an input slide rail (16), a speed changer slide rail (17), an output slide rail (18) and a mounting frame panel (8); The input slide rail (16) is provided with input motor (1), input shafting (2), MT bearing housing (3), MT clutch (4), release bearing (5), AMT sliding from one end to the other in sequence. Bearing seat (6) and AMT clutch (7), the input motor (1), input shafting (2), MT bearing seat (3), MT clutch (4), release bearing (5), AMT bearing seat ( 6) be connected successively with AMT clutch (7); 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 shafting system (11) and an output motor (12) are arranged on the output slide rail (18) to slide sequentially from one end to the other; Input slide rail (16) and output slide rail (18) are arranged side by side, be provided with mounting frame panel (8) and transmission slide rail (17) between input slide rail (16) and output slide rail (18), transmission slide rail (17) upper sliding is provided with speed changer (9); 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 the mounting frame panel (8) faces one end of the input shaft of the transmission (9) An oil pressure lock (15) is provided. 2. The test bench with dual-clutch shafting structure according to claim 1, characterized in that the input motor (1) is used to simulate the power output of the engine. 3. The test bench with dual-clutch shafting structure according to claim 1, characterized in that, the output motor (12) is used to simulate the resistance of going uphill or load. 4. the double-clutch shafting structure test bench according to claim 1, is characterized in that, when testing, the input shaft of the speed changer (9) links to each other with the AMT clutch (7), and the flange of the speed changer (9) Connect with the output bearing housing (10). 5. The test bench with dual-clutch shafting structure according to claim 4, characterized in that the hydraulic lock (15) on the panel (8) of the installation frame presses the transmission (9), thereby fixing the transmission (9) ). 6. An application of the double-clutch shafting structure test bench according to any one of claims 1-5, characterized in that it is used for AMT test or MT test. 7. The application of the dual-clutch shafting structure test bench according to claim 6 is characterized in that, when used for AMT testing, the specific operations are: The cylinder (14) does not work, the release bearing (5) is always in the original position, the MT clutch (4) is normally closed, and the AMT bearing seat (7) maintains power input all the time; During the shift test, the SCU of the transmission (9) issues a shift command, the CPCA of the transmission (9) promotes the AMT clutch (7), the AMT clutch (7) is loosened, and the power is cut off at the AMT clutch (7); The transmission (9) automatically completes the shift operation under the pneumatic drive; After the gear shifting was completed, the CPCA of the transmission (9) returned to its original position, the AMT clutch (7) was closed again, the power recovered, and the test of the corresponding gear was started. 8. The application of the dual-clutch shafting 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 normally closed, and the AMT clutch (7) and the speed changer (9) are always in a power connection state; During the shift test, the cylinder (14) moves, the release bearing (5) pushes the MT clutch (4) through the connecting rod (13), the MT clutch (4) is loosened, and the power is cut off at the MT clutch (4); Manually toggle the gear shifting rocker arm of the transmission (9) to complete the gear shifting; After the gear shift is completed, the cylinder (14) moves, and the release bearing (5) is driven 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.

Images