CN109060344A - Semiaxis rotoflector fatigue test board and test method - Google Patents

Abstract

The present invention relates to automobile bench test equipment fields, especially a kind of structure is more simplified, operate semiaxis rotoflector fatigue test board and test method more simple and that semiaxis rotary bending fatigue test efficiency can be improved, including counter, driving motor and bearing housing, Hub fixture and load hydraulic loading device, it is sequentially connected between the bearing housing, Hub fixture and hydraulic loading device by transmission shaft, the driving motor is connect with bearing housing connecting pin.Firstly, since simplifying for structure, not only reduces and manufacture cost, the occupancy that testing stand builds cost and operating space is also reduced, is more convenient to operate；Secondly as structure is simplified, the process of operation has also obtained apparent optimization, semiaxis rotary bending fatigue test can be quickly carried out by simple installation and adjustment, to improve test efficiency.Present invention is particularly suitable among automobile axle shaft rotary bending fatigue test.

Description

Semi-axis rotating bending fatigue test bench and test method

technical field

The invention relates to the field of automobile bench test equipment, in particular to a half-axis rotating bending fatigue test bench and a test method.

Background technique

When the existing automobile bench test equipment is used for half-axis rotating bending fatigue tests, the overall structure is often complicated due to structural design defects, and the operation is also relatively troublesome, and the final fatigue test data will also be affected accordingly. At present, there is no test bench specially designed for half-axis rotating bending fatigue test in the market.

Contents of the invention

The technical problem to be solved by the present invention is to provide a half-axis rotating bending fatigue test bench and a test method with a simpler structure, easier operation and improved efficiency of the half-axis rotating bending fatigue test.

The technical solution adopted by the present invention to solve the technical problems is: a semi-axis rotary bending fatigue test bench, including a counter, a drive motor, a bearing box, a hub clamp and a load hydraulic loading device, and the bearing box, the hub clamp and the hydraulic loading device The drive shafts are connected in turn through the transmission shaft, and the drive motor is connected with the connection end of the bearing box.

Further, the load hydraulic loading device is composed of a hydraulic jack and a pressure sensor.

Further, there is a detachable structure between the hub clamp and the transmission shaft.

Further, the motor is a variable frequency motor.

Further, a bearing box support is provided at the bottom of the bearing box.

Further, the load hydraulic loading device includes a load hydraulic loading device support.

Further, the load hydraulic loading device includes a transmission shaft chute structure, the end of the transmission shaft is provided with a transmission shaft slider structure, and the transmission shaft slider structure is slidably arranged in the transmission shaft chute structure.

Further, the test method carried out on the semi-axis rotating bending fatigue test bench includes the following steps: a, installing the test sample of the semi-shaft with hub on the test bench; b, using a hydraulic loading device to apply Preload; c. Turn on the motor and adjust the output speed of the motor to the specified value; d. Use the hydraulic loading device to slowly apply the load. After the load increases to the specified value, the counter is cleared and starts counting until the final fatigue test is obtained through the counter parameter.

The beneficial effects of the present invention are: firstly, due to the simplification of the 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 simplification of the structure, the operation process It has been significantly optimized, and the half-axis rotation bending fatigue test can be quickly performed after simple installation and adjustment, thereby improving the test efficiency. The invention is especially suitable for the automobile semi-axis rotation bending fatigue test.

Description of drawings

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

The marks in the figure are: bearing box 1, hub fixture 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 chute Structure 9, bearing box connecting end 10.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings.

The semi-axis rotary bending fatigue test bench as shown in Figure 1 includes a counter, a drive motor, a bearing box 1, a hub fixture 2 and a load hydraulic loading device, and the transmission between the bearing box 1, the hub fixture 2 and the hydraulic loading device The shafts 7 are connected in sequence, and the drive motor is connected with the connecting end 10 of the bearing box.

The using method of the present invention is as follows: comprise the following steps: a, the test sample piece of semi-shaft with wheel hub is installed on the test stand; b, use hydraulic loading device to apply preload to described sample piece earlier; c, open motor , adjust the output speed of the motor to the specified value; d. Use the hydraulic loading device to slowly apply the load. After the load increases to the specified value, the counter is cleared and starts counting until the final fatigue test parameters are obtained through the counter. The whole test process is very efficient, and the test data obtained are also accurate and reliable.

In order to further simplify the equipment, such a solution may be selected: the load hydraulic loading device is composed of a hydraulic jack 3 and a pressure sensor 4 . As shown in FIG. 1 , the hydraulic jack 3 provides the pressure of the applied load, while the pressure sensor 4 accurately measures the magnitude of the applied load to achieve precise control.

In order to allow the device to be used for various hubs with different diameters, such a solution can be selected: the hub clamp 2 and the transmission shaft 7 are detachable structures. In order to meet the detection needs of various hubs.

Combined with practical experience, the motor is preferably a variable frequency motor to meet various control needs of the motor.

In order to facilitate the setting of related equipment, it is preferable to set 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.

Since there is a certain deformation requirement when the load is applied, such a solution is preferred: the load hydraulic loading device includes a drive shaft chute structure 9, and the end of the drive shaft 7 is provided with a drive shaft slider structure 8, and the drive shaft The slider structure 8 is slidably disposed in the drive shaft chute structure 9 . As shown in FIG. 1 , the transmission shaft slider structure 8 is always limited in the transmission shaft chute structure 9 , and at the same time, it can also accommodate a certain deformation to ensure the smooth progress of the test.

Due to the simplification of the structure, the present invention not only reduces the production cost, but also reduces the construction cost of the test bench and the occupation of the operation space, and is more convenient to operate; secondly, due to the simplification of the structure, the operation process has also been significantly optimized. Simple installation and adjustment can quickly carry out the half-axis rotation bending fatigue test, thereby improving the test efficiency and having a very broad market promotion prospect.

Claims (8)

1. The semi-axis rotary bending fatigue test bench is characterized in that: it includes a counter, a drive motor, a bearing box (1), a hub fixture (2) and a load hydraulic loading device, and the bearing box (1), the hub fixture (2) It is sequentially connected with the hydraulic loading device through a transmission shaft (7), and the drive motor is connected with the connection end (10) of the bearing box. 2. The semi-axis rotating bending fatigue test bench according to claim 1, characterized in that: the load hydraulic loading device is composed of a hydraulic jack (3) and a pressure sensor (4). 3. The semi-axis rotating bending fatigue test bench according to claim 1, characterized in that: the hub fixture (2) and the transmission shaft (7) are detachable structures. 4. The half-axis rotating bending fatigue test bench according to claim 1, characterized in that: the motor is a variable frequency motor. 5. The semi-axis rotating bending fatigue test bench according to claim 1, characterized in that: a bearing box support (5) is provided at the bottom of the bearing box (1). 6. The semi-axis rotating bending fatigue test bench according to claim 1, characterized in that: the load hydraulic loading device comprises a load hydraulic loading device support (6). 7. The semi-axis rotating bending fatigue test bench according to claim 1, characterized in that: the load hydraulic loading device includes a transmission shaft chute structure (9), and the end of the transmission shaft (7) is provided with a transmission shaft slider structure (8), the transmission shaft slider structure (8) can be slidably arranged in the transmission shaft chute structure (9). 8. Utilize the test method carried out by the semi-axis rotating bending fatigue test bench according to claim 1, it is characterized in that, comprising the steps: a. Install the test sample of half shaft with hub on the test bench; b. Using a hydraulic loading device to apply a preload to the sample; c. Turn on the motor and adjust the output speed of the motor to the specified value; d. Then use the hydraulic loading device to slowly apply the load. After the load increases to the specified value, the counter is cleared and starts counting until the final fatigue test parameters are obtained through the counter.