No-load experiment mechanism for transfer case assembly

Abstract

The utility model relates to the technical field of transfer case testing, in particular to a transfer case assembly no-load experiment mechanism, which comprises a workbench, a rotating mechanism and a noise sensor, and is characterized in that the rotating mechanism is arranged on the workbench and comprises a driving piece fixedly arranged on the workbench and a rotating shaft connected with an output shaft of the driving piece; the driving part is used for driving the rotating shaft to rotate around the axis of the rotating shaft, the noise sensor is arranged on the workbench, when the transfer case assembly is fixedly arranged on the workbench, the rotating shaft can be connected with an input shaft of the transfer case assembly through the coupler, and noise fluctuation during operation of the transfer case assembly is detected through the noise sensor. The problems that in the prior art, the transfer case assembly is tested through hanging of a crown block, the testing rotating speed is low, and the testing effect is poor when an operator listens to sound to distinguish noise fluctuation in the operation process of the transfer case assembly are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of transfer case testing, in particular to a no-load test mechanism for a transfer case assembly. Background Art

[0002] The transfer case assembly is a device used to distribute engine power. It can distribute the engine power to different wheels to achieve different driving modes. The transfer case assembly is usually used in four-wheel drive vehicles. It can switch different driving modes according to road conditions and driving requirements to improve the vehicle's passability and stability. The structure and working principle of the transfer case vary from vehicle to vehicle, but generally include components such as input shaft, output shaft, gear set, clutch and operating mechanism.

[0003] For example, the patent document with patent application number 201510207899.9 discloses a multi-speed transfer case, a transmission system and a car. In the prior art, after the transfer case assembly is assembled, it needs to be inspected to inspect the assembly quality of the transfer case assembly. Generally, the operator suspends the transfer case assembly via an overhead crane and tests it by rotating the transfer case assembly. The test speed of the transfer case assembly is low and the full-speed operation of the transfer case assembly cannot be achieved. In addition, the operator judges the assembly quality of the transfer case assembly by listening to noise fluctuations. This detection method has high requirements on the operator. The operator needs to undergo professional training before taking up the post. In addition, it is greatly affected by human factors, is highly subjective, and has poor detection effect. Utility Model Content

[0004] The purpose of the utility model is to overcome the above-mentioned technical deficiencies and provide a no-load test mechanism for a transfer case assembly, so as to solve the problems in the prior art that the transfer case assembly is tested via an overhead crane suspension, the test speed is low, and the operator has to listen to the sound to identify the noise fluctuations during the operation of the transfer case assembly, resulting in poor test results.

[0005] In order to achieve the above technical purpose, the utility model adopts the following technical solutions:

[0006] The utility model provides a no-load test mechanism for a transfer case assembly, comprising a workbench, a rotating mechanism and a noise sensor, wherein the rotating mechanism is arranged on the workbench, the rotating mechanism comprises a driving member fixedly arranged on the workbench, and a rotating shaft connected to the output shaft of the driving member, the driving member is used to drive the rotating shaft to rotate around its own axis, the noise sensor is arranged on the workbench, when the transfer case assembly is fixedly arranged on the workbench, the rotating shaft can be connected to the input shaft of the transfer case assembly via a coupling, and the noise fluctuation during the operation of the transfer case assembly is detected by the noise sensor.

[0007] In some embodiments, an oil supply assembly is further included, wherein the oil supply assembly includes an oil storage tank disposed in the workbench, the oil storage tank is filled with lubricating oil, and the oil storage tank is connected to the transfer case assembly via an oil pipe.

[0008] In some embodiments, the oil supply assembly further includes an oil filter, and the oil filter is connected to an oil pipe connected between the oil storage tank and the transfer case assembly.

[0009] In some embodiments, a vertical plate is fixedly provided on the workbench, and one side of the transfer case assembly is fixedly connected to the vertical plate.

[0010] In some embodiments, a protective cover is slidably disposed on the workbench, and the transfer case assembly may be located inside the protective cover.

[0011] In some embodiments, a shift controller connected to the transfer case assembly is also included, and the shift controller is used to control the transfer case assembly to switch to different gears.

[0012] In some embodiments, the workbench includes a plurality of square tubes and steel plates welded together.

[0013] In some embodiments, the driving member is an AC synchronous motor, and the maximum rotation speed of the AC synchronous motor is 8000 rpm.

[0014] In some embodiments, a mounting frame is disposed on the workbench, the noise sensor is fixed on the mounting frame, and the noise sensor is located above the rotating shaft.

[0015] In some embodiments, an acceleration sensor is further disposed on the workbench, and the acceleration sensor may be in contact with the transfer case assembly.

[0016] Compared with the prior art, the utility model provides a no-load test mechanism for a transfer case assembly, in which a driving member is fixed on a workbench, a rotating shaft is connected to an output shaft of the driving member, the driving member is used to drive the rotating shaft to rotate around its own axis, a noise sensor is arranged on the workbench, the transfer case assembly to be tested is fixed on the workbench, the rotating shaft is connected to the input shaft of the transfer case assembly via a coupling, and the noise fluctuation during the operation of the transfer case assembly is detected by the noise sensor, which can effectively reduce the detection difficulty of the transfer case assembly, and the driving member drives the rotating shaft to rotate to realize the full-speed simulation operation of the transfer case assembly, the test speed is relatively high, and the noise sensor can collect the noise of the transfer case assembly during operation in real time during the test of the transfer case assembly, and judge whether the assembly quality of the transfer case assembly is qualified by analyzing the noise fluctuation state, and the test accuracy is relatively high. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1It is a structural schematic diagram of a no-load test mechanism of a transfer case assembly provided by the utility model;

[0018] Figure 2 It is a rear view of a no-load test mechanism of a transfer case assembly of the utility model;

[0019] Figure 3 It is a cross-sectional view of the limiting member of the utility model. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0021] See also Figures 1 to 3 The utility model provides a no-load test mechanism for a transfer case assembly. The mechanism can perform full-rate simulated operation detection on the transfer case assembly, collect the noise of the transfer case assembly in real time during operation, and analyze the noise fluctuation state to judge whether the assembly quality of the transfer case assembly is qualified.

[0022] In this specific embodiment, a no-load test mechanism for a transfer case assembly includes a workbench 1, a rotating mechanism 2 and a noise sensor 3. The rotating mechanism 2 is arranged on the workbench 1. The rotating mechanism 2 includes a driving member 21 fixedly mounted on the workbench 1, and a rotating shaft 22 connected to the output shaft of the driving member 21. The driving member 21 is used to drive the rotating shaft 22 to rotate around its own axis. The noise sensor 3 is arranged on the workbench 1. When the transfer case assembly A is fixedly mounted on the workbench 1, the rotating shaft 22 can be connected to the input shaft of the transfer case assembly A via a coupling, and the noise fluctuation during the operation of the transfer case assembly is detected by the noise sensor 3.

[0023] In actual use, the transfer case assembly A is fixed on the workbench 1, so that the rotating shaft 22 is connected to the input shaft of the transfer case assembly A via the coupling, and the rotating shaft 22 is driven to rotate around its own axis by the driving member 21, thereby driving the transfer case assembly A to operate, and the noise of the transfer case assembly during operation is collected by the noise sensor 3.

[0024] On the basis of the above scheme, since the transfer case assembly is a device that distributes the engine power to the front and rear axles, it needs lubrication and heat dissipation during operation. There are many gears and bearings inside the transfer case assembly, and these parts need lubrication to work properly. Without sufficient lubrication, the parts inside the transfer case assembly will wear, overheat, or even burn. Therefore, the transfer case assembly needs to provide lubricating oil through the oil supply component.

[0025] In this specific embodiment, the oil supply assembly 4 includes an oil storage tank 41 disposed in the workbench 1, the oil storage tank 41 contains lubricating oil, and the oil storage tank 41 is connected to the transfer case assembly via an oil pipe 42. In addition, the oil supply assembly 4 also includes an oil filter 43, and the oil filter 43 is connected to the oil pipe connecting the oil storage tank 41 and the transfer case assembly.

[0026] Specifically, the oil pump in the transfer case is usually driven by a gear set in the transfer case. The gear set in the transfer case transmits power by rotating, and part of the power will be transmitted to the oil pump, thereby driving the oil pump to operate. One end of the oil pipe is connected to the oil inlet of the oil pump in the transfer case. When the transfer case is running, it will drive the oil pump to suck the lubricating oil in the oil storage tank 41 out of the oil storage tank 41, and deliver the lubricating oil to various components in the transfer case to ensure the normal operation of the transfer case. In other embodiments, the oil supply assembly 4 also includes an oil radiator, which can reduce the oil temperature to ensure the normal operation of the transfer case.

[0027] In this specific embodiment, a vertical plate 11 is fixedly provided on the workbench 1, one side of the transfer case assembly is fixedly connected to the vertical plate 11 via a plurality of screws, and a plurality of threaded holes matching with the screws are provided on the vertical plate 11.

[0028] In one embodiment, in order to improve the safety performance of the experimental mechanism, a protective cover 12 is slidably provided on the workbench 1, and the protective cover 12 can slide between opposite ends of the workbench 1. By sliding the protective cover 12, the transfer case assembly and the driving member 21 can be located in the protective cover 12 respectively.

[0029] Specifically, two slide rails are provided on the workbench 1, the protective cover 12 is slidably connected to the two slide rails, and an openable door is provided on one side of the protective cover 12. When the transfer case assembly can be located in the protective cover 12, the door remains closed; when the door is in an open state, the protective cover 12 can be slid so that the driving member 21 is located in the protective cover 12.

[0030] On the basis of the above scheme, a shift controller 5 connected to the transfer case assembly is further included, and the shift controller 5 is used to control the transfer case assembly to switch different gears. It should be noted that the gear controller is an electronic device used to control the shift of the transfer case assembly. Specifically, the shift controller is usually composed of a sensor, a controller and an actuator, wherein the sensor is used to detect the rotation speed of the transfer case, the controller calculates the best gear according to the signal of the sensor, and sends a command to the actuator, and the actuator switches the gear according to the command.

[0031] In this specific embodiment, the workbench 1 is formed by welding a plurality of square tubes and steel plates. The square tubes are welded by 80*80*5 national standard square tubes, a plurality of square tubes are welded to form a frame, and a plurality of steel plates are welded to the side and top surfaces of the frame to form a workbench. Specifically, the thickness of the steel plates is 25 mm.

[0032] In this specific embodiment, the driving member 21 is an AC synchronous motor, and the maximum speed of the AC synchronous motor is 8000 rpm, which can realize the simulation of the transfer case assembly running in the full speed range of 0-150 KM / H in the vehicle.

[0033] In this specific embodiment, a mounting frame 13 is provided on the workbench 1, and the noise sensor 3 is fixed on the mounting frame 13, and the noise sensor 3 is located above the rotating shaft 22. In addition, an acceleration sensor is also provided on the workbench 1, and the acceleration sensor can be in contact with the transfer case assembly, wherein the acceleration sensor is used to detect the vibration acceleration of the transfer case assembly during operation.

[0034] In addition, the driving member, noise sensor 3, acceleration sensor and oil pump are all connected to the control panel, wherein the host in the control panel can display the data of noise fluctuation when the transfer case assembly is running, and judge the assembly quality of the transfer case assembly by detecting the data.

[0035] Compared with the prior art, the utility model provides a no-load test mechanism for a transfer case assembly, in which a driving member is fixed on a workbench, a rotating shaft is connected to an output shaft of the driving member, the driving member is used to drive the rotating shaft to rotate around its own axis, a noise sensor is arranged on the workbench, the transfer case assembly to be tested is fixed on the workbench, the rotating shaft is connected to the input shaft of the transfer case assembly via a coupling, and the noise fluctuation during the operation of the transfer case assembly is detected by the noise sensor, which can effectively reduce the detection difficulty of the transfer case assembly, and the driving member drives the rotating shaft to rotate to realize the full-speed simulation operation of the transfer case assembly, the test speed is relatively high, and the noise sensor can collect the noise of the transfer case assembly during operation in real time during the test of the transfer case assembly, and judge whether the assembly quality of the transfer case assembly is qualified by analyzing the noise fluctuation state, and the test accuracy is relatively high.

[0036] The specific implementation methods of the utility model described above do not constitute a limitation on the protection scope of the utility model. Any other corresponding changes and modifications made according to the technical concept of the utility model should be included in the protection scope of the claims of the utility model.

Claims

1. A no-load test mechanism for a transfer case assembly, characterized in that: It includes a workbench, a rotating mechanism and a noise sensor. The rotating mechanism is arranged on the workbench. The rotating mechanism includes a driving member fixed on the workbench and a rotating shaft connected to the output shaft of the driving member. The driving member is used to drive the rotating shaft to rotate around its own axis. The noise sensor is arranged on the workbench. When the transfer case assembly is fixed on the workbench, the rotating shaft can be connected to the input shaft of the transfer case assembly via a coupling. The noise sensor is used to detect noise fluctuations during the operation of the transfer case assembly.

2. A no-load test mechanism for a transfer case assembly according to claim 1, characterized in that: It also includes an oil supply component, which includes an oil storage tank arranged in the workbench, the oil storage tank is filled with lubricating oil, and the oil storage tank is connected to the transfer case assembly via an oil pipe.

3. A no-load test mechanism for a transfer case assembly according to claim 2, characterized in that: The oil supply assembly also includes an oil filter, which is connected to an oil pipe connected between the oil storage tank and the transfer case assembly.

4. The no-load test mechanism for a transfer case assembly according to claim 1, characterized in that: A vertical plate is fixedly arranged on the workbench, and one side of the transfer case assembly is fixedly connected to the vertical plate.

5. The no-load test mechanism for a transfer case assembly according to claim 1, characterized in that: A protective cover is slidably arranged on the workbench, and the transfer case assembly can be located inside the protective cover.

6. The no-load test mechanism for a transfer case assembly according to claim 1, characterized in that: It also includes a shift controller connected to the transfer case assembly, and the shift controller is used to control the transfer case assembly to switch to different gears.

7. The no-load test mechanism for a transfer case assembly according to claim 1, characterized in that: The workbench comprises a plurality of square tubes and steel plates welded together.

8. The no-load test mechanism for a transfer case assembly according to claim 1, characterized in that: The driving element is an AC synchronous motor, and the maximum rotation speed of the AC synchronous motor is 8000 rpm.

9. The no-load test mechanism for a transfer case assembly according to claim 1, characterized in that: A mounting frame is arranged on the workbench, the noise sensor is fixed on the mounting frame, and the noise sensor is located above the rotating shaft.

10. The no-load test mechanism for a transfer case assembly according to claim 1, characterized in that: An acceleration sensor is also arranged on the workbench, and the acceleration sensor can be in contact with the transfer case assembly.

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