Automobile gearbox NVH test tool

Abstract

The utility model discloses an NVH (Noise Vibration and Harshness) testing tool for an automobile gearbox, which relates to the technical field of NVH testing and comprises a vibration monitor. A plurality of extension rods are welded to the bottom of the vibration monitor, each extension rod is slidably connected into the corresponding guide pipe, and the guide pipes and the outer sides of the corresponding extension rods are sleeved with buffer springs. The guide pipe is welded to the lifting frame, and a noise monitor is embedded in the lifting frame. The lifting frame is connected with the guide rod in a sliding manner, and the lifting frame is further connected with the lifting screw rod through threads; the lifting lead screw rotates, and the lifting frame is slidably connected with the guide rod, so that the lifting frame moves and is conveniently attached to the gearbox, the rubber column at the bottom plays a role in attaching protection, noise generated by the gearbox is monitored by the noise monitor, vibration generated by the gearbox is transmitted into the vibration monitor through the lifting frame, and the gearbox is protected. The extension rod is slidably connected with the guide pipe and cooperates with the buffer spring to achieve a buffer effect.

Description

Technical Field

[0001] The utility model specifically relates to the technical field of NVH testing, and more specifically, to an NVH testing tooling for automotive transmissions. Background Art

[0002] The English abbreviation of Noise, Vibration, and Harshness. This is a comprehensive issue for measuring the manufacturing quality of automobiles, and it gives the most direct and superficial feelings to automobile users. The NVH problems of vehicles are one of the concerns of major vehicle manufacturing enterprises and parts enterprises in the international automotive industry. Statistical data shows that approximately one-third of the vehicle faults are related to the NVH problems of the vehicle, and nearly 20% of the R & D expenses of major companies are consumed in solving the NVH problems of the vehicle.

[0003] Traditional automotive NVH testing is usually carried out on a test vehicle by installing detection devices for noise and vibration. However, there are other devices on the test vehicle that will generate certain vibrations and noises, resulting in inaccurate NVH detection of the transmission. Therefore, we provide an NVH testing tooling for automotive transmissions. By fixing the transmission on the bearing plate and directly detecting the NVH of the transmission above the bearing plate, it is more convenient to use and detect, effectively making up for the above problems. Summary of the Utility Model

[0004] The purpose of the utility model is to provide an NVH testing tooling for automotive transmissions to solve the problems raised in the background art.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] An NVH testing tooling for automotive transmissions includes a vibration monitor; a plurality of extension rods are welded to the bottom of the vibration monitor, and each extension rod is slidably connected in a corresponding guide tube. A buffer spring is sleeved outside the guide tube and the corresponding extension rod; the guide tube is welded to the lifting frame, and a noise monitor is embedded in the lifting frame; the lifting frame is slidably connected to a guide rod, and the lifting frame is also threadedly connected to a lifting screw rod. Among them, the guide rod is welded to the bearing plate, and the lifting screw rod is in fit connection with a pedestal bearing installed on the bearing plate.

[0007] As a further technical solution of the utility model, a chute for slidably connecting a clamping plate is provided on the bearing plate. There are two clamping plates, and the two clamping plates are arranged in a mirror image.

[0008] As a further technical solution of the present utility model, the two clamping plates are respectively connected to the bidirectional lead screw by threads. The bidirectional lead screw is in mating connection with the pedestal bearing installed on the bearing plate, and one end of the bidirectional lead screw is in mating connection with the drive shaft of the clamping motor.

[0009] As a further technical solution of the present utility model, the clamping motor is fixed on the bearing plate by bolts.

[0010] As a further technical solution of the present utility model, a plurality of support springs are welded to the bottom of the bearing plate, and the other ends of the support springs are welded to the base.

[0011] As a further technical solution of the present utility model, one end of the bottom of the lifting lead screw is in mating connection with the drive shaft of the lifting motor, and the lifting motor is fixed on the bearing plate by bolts.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] 1. In the present utility model, the lifting lead screw rotates, and the lifting frame is slidably connected to the guide rod, so that the lifting frame moves, which is convenient for fitting the gearbox. The rubber column at the bottom plays a role in fitting and protecting. The noise generated by the gearbox will be monitored by the noise monitor, and the vibration generated by the gearbox will be conducted to the vibration monitor through the lifting frame. The extension rod is slidably connected to the guide tube and plays a buffering role in cooperation with the buffer spring;

[0014] 2. In the present utility model, the drive shaft of the clamping motor drives the connected bidirectional lead screw to rotate, so as to drive the two corresponding clamping plates to move towards each other, which is convenient for clamping and fixing the gearbox;

[0015] 3. In the present utility model, the support springs at the bottom of the bearing plate can facilitate the vibration of the gearbox, and the drive shaft of the lifting motor provides power for the rotation of the lifting lead screw. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a three-dimensional structural schematic diagram of the present utility model.

[0017] Figure 2 is another perspective schematic diagram of the present utility model Figure 1

[0018] Figure 3 is the front view of the present utility model Figure 1

[0019] Figure 4 is the left view of the present utility model Figure 1

[0020] Figure 5 is the partial enlarged view at A of the present utility model Figure 4 ​​​​

[0021] In the figure: 1 - base, 2 - support spring, 3 - bearing plate, 4 - clamping plate, 5 - bidirectional lead screw, 6 - clamping motor, 7 - guide rod, 8 - lifting motor, 9 - lifting lead screw, 10 - lifting frame, 11 - rubber column, 12 - guide tube, 13 - buffer spring, 14 - extension rod, 15 - noise monitor, 16 - vibration monitor. Specific embodiments

[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0023] Please refer to Figures 1-5 , in the embodiment of the present invention, an NVH test tool for an automotive transmission includes a vibration monitor 16; a plurality of extension rods 14 are welded to the bottom of the vibration monitor 16, and each extension rod 14 is slidably connected in a corresponding guide tube 12, and a buffer spring 13 is sleeved outside the guide tube 12 and the corresponding extension rod 14; the guide tube 12 is welded to the lifting frame 10, and a noise monitor 15 is embedded in the lifting frame 10; the lifting frame 10 is slidably connected to the guide rod 7, and the lifting frame 10 is also threadedly connected to the lifting lead screw 9. Among them, the guide rod 7 is welded to the bearing plate 3, and the lifting lead screw 9 is in fit connection with a pedestal bearing installed on the bearing plate 3.

[0024] By adopting the above technical solution, the lifting lead screw 9 rotates, and the lifting frame 10 is slidably connected to the guide rod 7, so that the lifting frame 10 moves, which is convenient for fitting the transmission. The rubber column 11 at the bottom plays a role of fitting and protecting. The noise generated by the transmission will be monitored by the noise monitor 15, and the vibration generated by the transmission will be conducted to the vibration monitor 16 through the lifting frame 10. The extension rod 14 is slidably connected to the guide tube 12 and cooperates with the buffer spring 13 to play a buffering role.

[0025] In this embodiment, a chute for the clamping plate 4 to slidably connect is provided on the bearing plate 3. There are two clamping plates 4, and the two clamping plates 4 are arranged in a mirror image.

[0026] Furthermore, the two clamping plates 4 are respectively threadedly connected to the bidirectional lead screw 5. The bidirectional lead screw 5 is in fit connection with a pedestal bearing installed on the bearing plate 3, and one end of the bidirectional lead screw 5 is in fit connection with the drive shaft of the clamping motor 6.

[0027] Further, the clamping motor 6 is fixed on the bearing plate 3 by bolts.

[0028] By adopting the above technical solution, the drive shaft of the clamping motor 6 drives the connected bidirectional lead screw 5 to rotate, thereby driving the two corresponding clamping plates 4 to move towards each other, facilitating the clamping and fixing of the gearbox.

[0029] In this embodiment, a plurality of support springs 2 are welded to the bottom of the bearing plate 3, and the other ends of the support springs 2 are welded to the base 1.

[0030] Further, one end of the bottom of the lifting lead screw 9 is in mating connection with the drive shaft of the lifting motor 8, and the lifting motor 8 is fixed on the bearing plate 3 by bolts.

[0031] By adopting the above technical solution, the support springs 2 at the bottom of the bearing plate 3 can facilitate the vibration of the gearbox, and the drive shaft of the lifting motor 8 provides power for the rotation of the lifting lead screw 9.

[0032] The working principle of the present utility model is as follows: When in use, the lifting lead screw 9 rotates, and the lifting frame 10 is slidably connected to the guide rod 7, so that the lifting frame 10 moves, facilitating the fitting to the gearbox. The rubber columns 11 at the bottom play a role in fitting and protecting. The noise generated by the gearbox will be monitored by the noise monitor 15, and the vibration generated by the gearbox will be conducted to the vibration monitor 16 through the lifting frame 10. The extension rod 14 is slidably connected to the guide tube 12 and cooperates with the buffer spring 13 to play a buffering role; the drive shaft of the clamping motor 6 drives the connected bidirectional lead screw 5 to rotate, thereby driving the two corresponding clamping plates 4 to move towards each other, facilitating the clamping and fixing of the gearbox; the support springs 2 at the bottom of the bearing plate 3 can facilitate the vibration of the gearbox, and the drive shaft of the lifting motor 8 provides power for the rotation of the lifting lead screw 9.

[0033] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present utility model, the present utility model can be implemented in other specific forms. Therefore, in any aspect, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, it is intended to encompass all changes within the meaning and scope of the equivalent elements of the claims in the present utility model. Any reference signs in the claims should not be regarded as limiting the claimed rights.

[0034] In addition, it should be understood that although this specification is described in terms of embodiments, not every embodiment contains only one independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An automobile gearbox NVH test tool, characterized by: The invention comprises a vibration monitor (16); a plurality of extension rods (14) are welded at the bottom of the vibration monitor (16), and each extension rod (14) is slidably connected in a corresponding guide tube (12), and a buffer spring (13) is sleeved on the outer side of the guide tube (12) and the corresponding extension rod (14); the guide tube (12) is welded on the lifting frame (10), and a noise monitor (15) is embedded on the lifting frame (10); the lifting frame (10) is slidably connected to the guide rod (7), and the lifting frame (10) is also connected to a lifting screw rod (9) by threading, wherein the guide rod (7) is welded on the bearing plate (3), and the lifting screw rod (9) is matched and connected with a bearing seat installed on the bearing plate (3).

2. The automobile gearbox NVH test fixture according to claim 1, characterized in that: The bearing plate (3) is provided with a sliding groove for facilitating the sliding connection of the clamping plate (4), and two clamping plates (4) are provided, and the two clamping plates (4) are arranged in a mirror image.

3. The automobile gearbox NVH test fixture according to claim 2, characterized in that: The two clamping plates (4) are respectively connected to a bidirectional screw rod (5) through threads. The bidirectional screw rod (5) is connected to a seat bearing installed on the bearing plate (3), and one end of the bidirectional screw rod (5) is connected to the driving shaft of the clamping motor (6).

4. The automobile gearbox NVH test fixture according to claim 3, characterized in that: The clamping motor (6) is fixed on the bearing plate (3) by means of bolts.

5. The automobile gearbox NVH test fixture according to claim 1, characterized in that: A plurality of support springs (2) are welded to the bottom of the bearing plate (3), and the other end of the support spring (2) is welded to the base (1).

6. The automobile gearbox NVH test tool according to claim 1, characterized in that: One end of the bottom of the lifting screw rod (9) is connected to the driving shaft of the lifting motor (8), and the lifting motor (8) is fixed on the bearing plate (3) by bolts.

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