Half-axle rotation bending fatigue test bench and test method

Abstract

The present invention relates to the field of automobile bench test equipment, and in particular to a semi-axle rotation bending fatigue test bench and test method with a more streamlined structure, easier operation and improved efficiency of semi-axle rotation bending fatigue test, including a counter, a drive motor, a bearing box, a hub clamp and a load hydraulic loading device, wherein the bearing box, the hub clamp and the hydraulic loading device are sequentially connected through a transmission shaft, and the drive motor is connected to the bearing box connection end. Firstly, due to the streamlined structure, not only the production cost is reduced, but also the test bench construction cost and the occupation of operating space are reduced, and it is more convenient to operate; secondly, due to the streamlined structure, the operating process is also significantly optimized, and the semi-axle rotation bending fatigue test can be quickly carried out after simple installation and adjustment, thereby improving the test efficiency. The present invention is particularly suitable for automobile semi-axle rotation bending fatigue test.

Description

Technical Field

[0001] The invention relates to the field of automobile bench test equipment, in particular to a semi-axle rotation bending fatigue test bench and a test method. Background Art

[0002] When the existing automobile bench test equipment conducts half-axle rotation bending fatigue test, the overall structure is often complicated and the operation is troublesome due to the defects of structural design, and the fatigue test data finally obtained will also be affected accordingly. At present, there is no test bench specially designed for half-axle rotation bending fatigue test in the market. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a semi-axle rotation bending fatigue test bench and a test method which have a simpler structure, are easier to operate and can improve the efficiency of the semi-axle rotation bending fatigue test.

[0004] The technical solution adopted by the present invention to solve its technical problem is: a half-axle rotation bending fatigue test bench, including a counter, a drive motor, a bearing box, a hub clamp and a load hydraulic loading device, the bearing box, the hub clamp and the hydraulic loading device are connected in sequence through a transmission shaft, and the drive motor is connected to the connecting end of the bearing box.

[0005] Furthermore, the load hydraulic loading device is composed of a hydraulic jack and a pressure sensor.

[0006] Furthermore, the wheel hub clamp and the transmission shaft are detachable structures.

[0007] Furthermore, the motor is a variable frequency motor.

[0008] Furthermore, a bearing box support is arranged at the bottom of the bearing box.

[0009] Furthermore, the load hydraulic loading device includes a load hydraulic loading device support.

[0010] Furthermore, the load hydraulic loading device includes a transmission shaft slide groove structure, and the transmission shaft end is provided with a transmission shaft slider structure, and the transmission shaft slider structure can be slidably arranged in the transmission shaft slide groove structure.

[0011] Furthermore, the test method conducted by the half-shaft rotation bending fatigue test bench includes the following steps: a. Installing the test sample of the half-shaft with a hub on the test bench; b. Using a hydraulic loading device to first apply a preload to the sample; c. Turning on the motor and adjusting the motor output speed to a specified value; d. Then using the hydraulic loading device to slowly apply the load, after the load increases to the specified value, the counter is reset to zero and starts counting until the final fatigue test parameters are obtained through the counter.

[0012] The beneficial effects of the present invention are as follows: firstly, due to the simplified structure, not only the production cost is reduced, but also the test bench construction cost and the occupation of the operation space are reduced, and the operation is more convenient; secondly, due to the simplified structure, the operation process is also significantly optimized, and the half-axle rotation bending fatigue test can be quickly carried out through simple installation and adjustment, thereby improving the test efficiency. The present invention is particularly suitable for the automobile half-axle rotation bending fatigue test. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the present invention.

[0014] Marked in the figure are: bearing box 1, wheel hub clamp 2, hydraulic jack 3, pressure sensor 4, bearing box support 5, load hydraulic loading device support 6, transmission shaft 7, transmission shaft slider structure 8, transmission shaft slide groove structure 9, bearing box connection end 10. DETAILED DESCRIPTION

[0015] The present invention is further described below in conjunction with the accompanying drawings.

[0016] like Figure 1 The semi-axle rotary bending fatigue test bench shown includes a counter, a driving motor, a bearing box 1, a hub clamp 2 and a load hydraulic loading device. The bearing box 1, the hub clamp 2 and the hydraulic loading device are connected in sequence through a transmission shaft 7, and the driving motor is connected to the bearing box connection end 10.

[0017] The method of using the present invention is as follows: it includes the following steps: a. installing the test sample of the half shaft with the wheel hub on the test bench; b. using the hydraulic loading device to first apply a preload to the sample; c. turning on the motor and adjusting the motor output speed to a specified value; d. then using the hydraulic loading device to slowly apply the load, after the load increases to the specified value, the counter is reset to zero and starts counting until the final fatigue test parameters are obtained through the counter. The entire test process is very efficient, and the test data obtained is also accurate and reliable.

[0018] In order to further simplify the equipment, the following solution can be selected: the load hydraulic loading device is composed of a hydraulic jack 3 and a pressure sensor 4. Figure 1 As shown, the hydraulic jack 3 provides the pressure of the applied load, and the pressure sensor 4 accurately measures the size of the applied load to achieve precise control.

[0019] In order to allow the device to be used for wheels of various diameters, such a solution can be selected: the wheel hub fixture 2 and the transmission shaft 7 are detachable structures, thereby meeting the detection needs of various wheel hubs.

[0020] Based on practical experience, the motor is preferably a variable frequency motor to meet various control requirements for the motor.

[0021] In order to facilitate the arrangement of related equipment, it is preferred to arrange a bearing box support 5 at the bottom of the bearing box 1, and to add a load hydraulic loading device support 6 in the load hydraulic loading device.

[0022] Since there is a certain deformation requirement when applying a load, the following solution is preferred: the load hydraulic loading device includes a transmission shaft slide groove structure 9, and the end of the transmission shaft 7 is provided with a transmission shaft slider structure 8, and the transmission shaft slider structure 8 can be slidably arranged in the transmission shaft slide groove structure 9. Figure 1 As shown, the transmission shaft slider structure 8 is always confined in the transmission shaft slot structure 9, and at the same time, it can also accommodate a certain deformation to ensure the smooth progress of the test.

[0023] The simplified structure of the present invention not only reduces the production cost, but also reduces the test bench construction cost and the occupation of operating space, making it easier to operate; secondly, since the structure has been simplified, the operating procedures have also been significantly optimized, and the half-axis rotation bending fatigue test can be quickly carried out through simple installation and adjustment, thereby improving the test efficiency and having a very broad market promotion prospect.

Claims

1. A test method for a semi-axle rotary bending fatigue test bench, comprising a semi-axle rotary bending fatigue test bench, the semi-axle rotary bending fatigue test bench comprising a counter, a drive motor, a bearing box (1), a wheel hub fixture (2) and a load hydraulic loading device, the bearing box (1), the wheel hub fixture (2) and the hydraulic loading device being connected in sequence via a transmission shaft (7), the drive motor being connected to a bearing box connection end (10), the load hydraulic loading device being composed of a hydraulic jack (3) and a pressure sensor (4), a detachable structure being provided between the wheel hub fixture (2) and the transmission shaft (7), the motor being a variable frequency motor, a bearing box support (5) being provided at the bottom of the bearing box (1), the load hydraulic loading device comprising a load hydraulic loading device support (6), and characterized in that: The load hydraulic loading device comprises a transmission shaft slide groove structure (9), the end of the transmission shaft (7) is provided with a transmission shaft slider structure (8), and the transmission shaft slider structure (8) can be slidably arranged in the transmission shaft slide groove structure (9); and comprises the following steps: a. Install the test sample of the half shaft with wheel hub on the test bench; b. Use a hydraulic loading device to apply a preload to the sample; c. Turn on the motor and adjust the motor output speed to the specified value; d. Then use the hydraulic loading device to slowly apply the load. When the load increases to the specified value, the counter is reset and starts counting until the final fatigue test parameters are obtained through the counter.

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