Fatigue resistance loading test table for aviation wheel and testing method utilizing same
A loading test and machine wheel technology, applied in the testing of mechanical components, testing of machine/structural components, measuring devices, etc., can solve the problems of long cycle, high cost, and large loss, so as to alleviate heat dissipation problems and reduce power loss , save the effect of the brake device
Inactive Publication Date: 2012-08-15
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 test parameters of the tested wheel are: the radial load loaded on the wheel is 250KN; the resistance load is 32.5KN. The diameter of the machine wheel is 1030mm. The rolling radius of the wheel after being subjected to radial load is 0.5M, then the calculated resistance moment required by the wheel is: 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 machine 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 rectification 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 tube 5 and...
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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 aircraft wheel tests, in particular to an aircraft wheel fatigue resistance loading test bench and a test method. Background technique [0002] In order to evaluate the life of the aircraft wheel, it is required to carry out the fatigue rolling test on the fatigue test bench during the in-plant test. The fatigue test bench is usually controlled by a control system to drive a large steel drum. Rotate, the tested wheel is installed on the bench, 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 applied to the wheel and the actual The rolling mileage evaluates the fatigue life of the wheel. The resistance loading test requires that the tested wheel rolls under the drag of the drum and at the same time apply a specified braking torque to the wheel to simulate the effect of the braking torque on the wheel during braking...
Claims
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Inventor 张谦殷立行杨薇
Owner XIAN AVIATION BRAKE TECH