Device and method of measuring maximum rolling static friction torque of rotor cabin
A static friction and cabin technology, applied in measuring devices, force/torque/power measuring instruments, instruments, etc., can solve the problems of measurement result errors, large interference friction, etc., and achieve stable values, convenient operation, and good correspondence Effect
Active Publication Date: 2017-07-21
CHINA AEROSPACE TIMES ELECTRONICS CORP
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Problems solved by technology
The traditional loading method mainly uses bearings to withstand or press the rotor cabin for loading. During the test process, it is easy to introduce a large interference friction force from the measurement device, which makes the measurement results have large errors.
Method used
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Embodiment
[0055] Such as image 3 As shown, it is necessary to measure the maximum rotational and rolling static frictional moment M corresponding to the rotor cabin 31 under the condition that the normal load is f.
[0056] Such as Figure 4 As shown, the known conditions are:
[0057] (1) The rotor cabin body 31 needs to be subjected to a normal load f;
[0058] (2) The distance between the loading points of the rotor cabin body 31 is a and is distributed symmetrically with respect to the rotor cabin body 31;
[0059] (3) The outer diameter of the arc section of the rack 11 is r.
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The invention discloses a device and a method of measuring the maximum rolling static friction torque of a rotor cabin, which comprises a base, a first supporting seat, a first fixing seat, a first adjusting nut, a second adjusting nut, a first rocker rod, a first top seat, a rotation shaft, a retainer ring, a gear, a rack, a second top seat, a second rocker rod, a third adjusting nut, a fourth adjusting nut, a second fixing seat, a second supporting seat, a first fixing nut, a first pulling rope, a first spring, a first static transducer, a second static transducer, a second spring, a second pulling rope, and a second fixing nut. The external load applied to the rotor cabin is adjusted through the first adjusting nut, the second adjusting nut, the third adjusting nut and the fourth adjusting nut, the first rocker rod or the second rocker rod is rotated slowly, and the corresponding maximum rolling static friction torque of the rotor cabin under a predetermined external load condition can be obtained through measurement values of the first static transducer and the second static transducer.
Description
technical field [0001] The invention relates to a device and method for measuring the maximum rolling static friction moment of a rotor cabin, and is especially suitable for measuring the corresponding maximum rolling static friction moment of the rotor cabin under the condition of relatively large normal load. Background technique [0002] The rotor cabin is mainly used to reduce the aerodynamic disturbance moment during the flight of the aircraft, and the maximum rolling static friction moment suffered by the rotor cabin is the minimum moment for the rotor cabin to start. During the flight of the aircraft, the rotor cabin will be subjected to large aerodynamic loads. It is of great significance to measure the maximum rolling static friction moment of the rotor cabin under load conditions through ground tests for the structural design and flight control of the rotor cabin. [0003] At present, the methods for obtaining the maximum rolling static friction moment of the rotor...
Claims
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IPC IPC(8): G01L5/00
Inventor 罗志辉王卫平杨士超韩凌攀许昌张俊刘海静何泓霏徐杭杨梦琳王永坤刘国昌梁浩李振凯万军牛盅凯
Owner CHINA AEROSPACE TIMES ELECTRONICS CORP