New energy electric vehicle reduction gearbox NVH test tool

Abstract

The utility model discloses an NVH test tool for a reduction gearbox of a new energy electric vehicle. The NVH test tool comprises an NVH clamp and a transition tool, the NVH clamp comprises a clamp pedestal, a parallel guide rail and a tool gripper, the parallel guide rail is arranged on the clamp pedestal, and the tool gripper is arranged on one side of the guide rail. According to the utility model, tight combination of the reduction gearbox, the transition tool and the NVH test fixture can be realized, the reduction gearbox is ensured not to deviate and violently shake in the NVH test process so as not to influence the result of the NVH test, and the stability of equipment measurement is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of new energy electric vehicle reduction gearboxes, in particular to an NVH testing tool for new energy electric vehicle reduction gearboxes. Background Art

[0002] There is no tooling for NVH testing of this type of new energy electric vehicle reducer in production. The current reducer NVH test bench is fixed, while the appearance structure and type of the reducer being tested are constantly changing. The existing reducer NVH test bench still has the following problems:

[0003] 1. The reduction gearbox cannot be stably fixed on the NVH fixture

[0004] 2. It is not possible to ensure that the transition tooling is firmly clamped to the gearbox during the NVH test

[0005] 3. There may be interference between transition tooling, reduction gearbox and fixture

[0006] 4. The existing clamping tooling design is conservative and inconvenient to clamp

[0007] The information disclosed in the above background technology section is only intended to increase the understanding of the overall background of the present invention, and should not be regarded as admitting or suggesting in any form that the information constitutes the prior art already known to those skilled in the art. Utility Model Content

[0008] In view of the above existing defects, the purpose of this utility model is to design a transition tooling for NVH testing of a two-stage new energy electric vehicle reducer with left and right covers. The transition tooling can achieve a close combination of the reducer, transition tooling, and NVH test fixture, ensuring that the reducer will not deviate or shake violently during the NVH test, thereby affecting the results of the NVH test and ensuring the stability of the equipment measurement.

[0009] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0010] A new energy electric vehicle reduction box NVH test tool, comprising an NVH fixture and a transition tool; the NVH fixture comprises a fixture base, parallel guide rails and a tool gripper, the parallel guide rails are arranged on the fixture base, and the tool gripper is arranged on one side of the guide rail;

[0011] The transition tooling includes a top plate, and a first side plate and a second side plate arranged in parallel below the two ends of the top plate. The first side plate is provided with a boss or countersunk hole for positioning and fixing the tooling gripper, and is also provided with a first insertion hole for the output shaft. A hydraulic locking valve and a support block are provided on a side surface of the second side plate opposite to the first side plate. A second insertion hole for the output shaft is also provided on the second side plate at a position opposite to the first insertion hole of the output shaft. The second side plate is also provided with an input shaft insertion hole. Pulleys are provided at the bottom of the first side plate and the second side plate, and the pulleys are adapted to the parallel guide rails.

[0012] Furthermore, it also includes a hanging ring, which is arranged on the top surface of the top plate.

[0013] Furthermore, the number of the tooling grippers is more than 2.

[0014] Furthermore, the number of the hydraulic locking valves is more than 2.

[0015] Furthermore, it also includes a locking valve angle limiting block, which is arranged on one side of the hydraulic locking valve.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] The utility model ensures that the workpiece does not deviate or shake during the NVH test by installing the reduction gear box on the transition tooling and then fixing it on the NVH fixture, thereby improving the clamping efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is the general structure diagram of the utility model;

[0019] Figure 2 This is a schematic diagram of the side structure of the utility model;

[0020] Figure 3 This is a schematic diagram of the clamping top view structure of the utility model;

[0021] Figure 4 It is a schematic diagram of the utility model in the position of clamping and fixing the drive axle;

[0022] Figure 5 It is a schematic diagram of the utility model in the position of clamping and fixing the drive axle.

[0023] In the figure, 1, lifting ring; 2, top plate; 3, first hydraulic locking valve; 4, support block; 5, second hydraulic locking valve; 6, reduction box; 7, first pulley; 8, lifting ring; 9, second pulley; 10, first insertion hole of output shaft; 11, hydraulic locking valve angle limiting block; 12, input shaft insertion hole; 13, second insertion hole of output shaft; 100, fixture base; 200, input shaft; 300, first tooling jaw; 500, parallel guide rail; 600 second tooling jaw; 201, first side plate; 202, second side plate; 301, countersunk hole; 302, boss. DETAILED DESCRIPTION

[0024] In order to explain the technical content, purpose and effect of the utility model in detail, the following is an explanation in combination with the implementation mode and the accompanying drawings. In the description of the implementation mode, it should be understood that the terms indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, which are only for the convenience of describing the implementation mode and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.

[0025] like Figure 1 As shown, a new energy electric vehicle reduction box NVH test tooling includes an NVH fixture and a transition tooling; the NVH fixture includes a fixture base 100, a parallel guide rail 500 and a tooling gripper 300, the parallel guide rail 500 is arranged on the fixture base 100, and the tooling gripper 300 is arranged on one side of the parallel guide rail 500;

[0026] The transition tooling includes a top plate 2, and a first side plate 201 and a second side plate 202 which are arranged in parallel below the two ends of the top plate 2. The first side plate 201 is provided with a boss 301 or a countersunk hole 302 for positioning and fixing the tooling gripper 300, and is also provided with a first insertion hole 10 for the output shaft. A hydraulic locking valve and a support block 4 are provided on a side surface of the second side plate 202 opposite to the first side plate 201. A second insertion hole 13 for the output shaft is also provided at a position of the second side plate 202 opposite to the first insertion hole 10 of the output shaft. The second side plate 202 is also provided with an input shaft insertion hole 12. Pulleys are provided at the bottom of the first side plate 201 and the second side plate 202, and the pulleys are adapted to the parallel guide rails 500.

[0027] Combination Figure 2 , Figure 3 , Figure 4 , Figure 5It can be seen that when the utility model is used, the reduction box 6 can be fixed on the NVH fixture by using the transition tooling. The corresponding first tooling clamping jaw 3 or the second tooling clamping jaw 6 is equipped on the fixture to clamp the fixture on the fixture to prevent the tooling from deflecting and shaking due to energy fluctuations during NVH testing. In addition, the transition tooling is also equipped with a first hydraulic locking valve 3 and a second hydraulic locking valve 5 to lock the reduction box 6, and a support block 4 to limit its space to prevent it from loosening during testing.

[0028] In order to prevent the transition tooling from affecting the NVH test, a first output shaft insertion hole 10, a second output shaft insertion hole 13, and an input shaft insertion hole 12 are opened on the transition tooling body 2 to facilitate the connection between the motor and the input shaft and the reduction box 6.

[0029] In order to improve the clamping efficiency, the transition tooling is provided with a first lifting ring 1 and a second lifting ring 8 on the top, a first pulley 7 and a second pulley 9 on the bottom, and a corresponding parallel guide rail 500 on the bottom of the fixture. After the reduction gearbox is fixed and locked with an electric gun, the first lifting ring 1 and the second lifting ring 8 on the top are directly hooked by a crane, and the transition tooling together with the reduction gearbox is lifted onto the fixture, and then the parallel guide rail 500 is used to push it into the fixture. The position of the parallel guide rail 500 is in contact with the first pulley 7 and the second pulley 9 at the bottom of the transition tooling, and it must be put in the correct position before the next operation can be carried out. It has an error-proofing effect. This method also improves the clamping efficiency.

[0030] Although the present invention has been described in detail above with specific implementation methods, it is obvious to those skilled in the art that some modifications or improvements can be made to the present invention. Therefore, these modifications or improvements made without departing from the spirit of the present invention are within the scope of protection claimed by the present invention.

Claims

1. A new energy electric vehicle reduction box NVH test tool, characterized by: It includes an NVH fixture and a transition tool; the NVH fixture includes a fixture base, a parallel guide rail and a tool gripper, the parallel guide rail is arranged on the fixture base, and the tool gripper is arranged on one side of the guide rail; The transition tooling includes a top plate, and a first side plate and a second side plate arranged in parallel below the two ends of the top plate. The first side plate is provided with a boss or countersunk hole for positioning and fixing the tooling gripper, and is also provided with a first insertion hole for the output shaft. A hydraulic locking valve and a support block are provided on a side surface of the second side plate opposite to the first side plate. A second insertion hole for the output shaft is also provided on the second side plate at a position opposite to the first insertion hole of the output shaft. The second side plate is also provided with an input shaft insertion hole. Pulleys are provided at the bottom of the first side plate and the second side plate, and the pulleys are adapted to the parallel guide rails.

2. According to claim 1, a new energy electric vehicle reduction box NVH test tool is characterized by: It also includes a hanging ring, which is arranged on the top surface of the top plate.

3. The NVH test tool for a new energy electric vehicle reduction gearbox according to claim 1 is characterized in that: The number of the tooling grippers is more than 2.

4. The NVH test tool for a new energy electric vehicle reduction gearbox according to claim 1 is characterized by: The number of the hydraulic locking valves is more than 2.

5. The NVH test tool for a new energy electric vehicle reduction gearbox according to claim 1 is characterized by: It also includes a locking valve angle limiting block, which is arranged on one side of the hydraulic locking valve.

Images