Dynamic and static torsional stiffness simultaneous measurement method of elastic coupling in working state
A technology of elastic coupling and torsional stiffness, which is applied in the direction of elastic testing, testing material strength and measuring devices by applying stable torsion, and can solve problems such as changes in vibration characteristics and damage of power devices
Inactive Publication Date: 2011-05-11
HARBIN ENG UNIV
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Problems solved by technology
Due to the different characteristics of the load, the torsional stiffness of the elastic coupling is different. During the operation of the power plant, the torsional stiffness of the elastic coupling may change nonlinearly, which will change the vibration characteristics of the power plant and even lead to damage. occur
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[0012] The present invention is described in more detail below in conjunction with accompanying drawing example:
[0013] combine figure 1 , the method of the present invention is realized by a structure composed of two angle markers, a power receiver, a prime mover, a data acquisition instrument and data processing. Install the two angle markers at both ends of the power device respectively, start the power device, and the two angle markers send out pulse signals at the same time; use the data acquisition instrument to record the pulse signals, and record the pulse signals and corresponding pulses of the two angle markers The excitation time is stored in the two-dimensional array 1 and the two-dimensional array 2 respectively. The first column of the two-dimensional array is the pulse number, which is the number of the pulse, and the second column is the moment when the corresponding pulse is excited. According to the characteristics of the angle marker: between every two pu...
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The invention provides a dynamic and static torsional stiffness simultaneous measurement method of a resilient coupling in working state. A corner mark instrument is respectively arranged at both ends of a dynamic device comprising a power receiver, a prime motor and the elastic coupling connected between the power receiver and the prime motor, a data acquisition instrument acquires pulse signalssent by the two corner mark instruments when the dynamic device starts, the pulse signals of the two angle standard instruments are converted to torsional angles, then the angles of the correspondingtime of the two corner mark instruments subtract each other to obtain turn angle difference responding to the torque born by the resilient coupling, and the torsional rigidity of the resilient coupling is further obtained. The measurement method of the invention can be carried out on an actual device, and a special experimental bench is not needed to be designed. By the measurement method of the invention, the torsional rigidity of the resilient coupling in actual working condition is obtained, and on-line measurement can be carried out when the dynamic device runs.
Description
technical field [0001] The invention relates to a method for measuring the torsional stiffness of an elastic coupling, in particular to a method for synchronously measuring the static and dynamic stiffness of an elastic coupling in a working state. Background technique [0002] The dynamic and static torsional stiffness of the elastic coupling is the main performance parameter of the coupling, and also the key parameter affecting the vibration of the power plant shafting. Due to the different load characteristics, the torsional stiffness of the elastic coupling is different. During the operation of the power plant, the torsional stiffness of the elastic coupling may change nonlinearly, which will change the vibration characteristics of the power plant and even lead to damage. occur. [0003] Wu Fangji, Liao Yuhe, Qu Liangsheng and others invented a shafting dynamic balance test bench (December 17, 2008, authorized publication number: CN201166597Y), which can replace differe...
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IPC IPC(8): G01M5/00G01M13/00G01N3/22
Inventor 李玩幽卢熙群张天元杜敬涛吕秉琳郭宜斌
Owner HARBIN ENG UNIV