Fatigue resistance loading test table for aviation wheel and testing method utilizing same
A loading test, wheel technology, applied in the testing of mechanical components, testing of machine/structural components, measuring devices, etc., can solve the problems of large loss, high cost, long cycle, etc., to reduce power loss and alleviate heat dissipation problems , Save the effect of braking device
Inactive Publication Date: 2014-07-09
XIAN AVIATION BRAKE TECH
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Problems solved by technology
[0003] In order to overcome the deficiencies of high cost, long period and large loss in the prior art, the present invention proposes a test bench and test method for fatigue resistance loading of aircraft wheels
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[0029] This embodiment is an aircraft wheel fatigue resistance loading test bench.
[0030] In this embodiment, the tested wheel test parameters are: the radial load loaded by the wheel is 250KN; the resistance load is 32.5KN. The diameter of the wheel is 1030mm. The rolling radius of the wheel after being subjected to radial load is 0.5M, then the resistance torque required by the wheel can be calculated as: 32.5×0.5=16.25KNm.
[0031] This embodiment includes a first inverter 1, an AC variable frequency motor 2, a drum wheel 3, a test wheel 4, a torque cylinder 5, a torque sensor 6, a transmission gear 7, a loading bracket 8, a speed increaser 9, and a hydraulic pump 10. Hose 11, radiator 12, hydraulic motor 13, variable frequency generator 14, power generation inverter unit 15 and rectifier unit 16.
[0032] A cantilever shaft 17 is fixed on one side surface of the loading bracket 8 , and a transmission gear 7 , a torque sensor 6 , a torsion cylinder 5 and a wheel are seq...
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The invention provides a fatigue resistance loading test table for an aviation wheel and a testing method utilizing the same. A cantilever shaft is fixed on the surface at one side of a loading bracket. A transmission gear, a torque sensor, a tension cylinder and a wheel to be tested are sequentially sleeved from the root to the end part of the cantilever shaft. The circumference surface of a drum wheel is adhered to that of a wheel tire. A power supply wire of a motor is connected with the output terminal of a first inverter. A sealed hydraulic system is formed by a speed increaser, a hydraulic pump, a hydraulic motor and a heat radiator. The end faces at the both ends of the torque sensor are respectively connected with the transmission gear and the tension cylinder. The tension cylinder is located in the wheel cavity of a wheel to be tested and is matched with a guide rail of the wheel. According to the fatigue resistance loading test table provided by the invention, a requested resistance torque is supplied to the guide rail of the wheel by using a transmission mechanism, so as to replace a braking torque on the guide rail of the wheel due to the friction effect of braking plates in a braking device. The fatigue resistance loading test table can simulate the braking resistance of the braking device in a rotation process of the wheel, so as to reflect working conditions of the wheel more comprehensively and estimate the service life more accurately.
Description
technical field [0001] The invention relates to the field of aviation wheel testing, in particular to an aviation wheel fatigue resistance loading test bed and a test method. Background technique [0002] In order to evaluate the life of the aircraft wheel, the fatigue rolling test of the wheel is required to be carried out on the fatigue test bench during the in-plant test. The fatigue test bench is usually controlled by a control system to control the motor to drive a large steel drum. Rotation, the wheel to be tested is installed on the bench, and by applying a certain load to the bench, the wheel is leaned against the drum, and the drum drives the wheel to rotate. According to the load spectrum and actual load applied to the wheel Rolling mileage evaluates the fatigue life of the wheel. The resistance loading test requires that the wheel to be tested rolls under the drag of the drum, and at the same time, a specified braking torque is applied to the wheel, simulating th...
Claims
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IPC IPC(8): G01M13/00
Inventor 张谦殷立行杨薇
Owner XIAN AVIATION BRAKE TECH