Broadband torsional vibration test system
A test system and broadband technology, applied in the field of broadband torsional vibration test systems, can solve the problems of inability to perform random torsional vibration loads, inability to adjust and load loads, etc., and achieve the effects of improving authenticity, increasing the upper limit of load, and high performance.
Pending Publication Date: 2020-05-05
GENERAL ENG RES INST CHINA ACAD OF ENG PHYSICS
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Problems solved by technology
The two torsional vibration test equipment can only realize the loading of sinusoidal torsional vibration, but cannot carry out the loading of random torsional vibration load
In addition, the current torsional vibration test equipment is open-loop control, and the load cannot be adjusted when the vibration response of the system changes.
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[0026] Specific embodiments of the present disclosure will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present disclosure, and are not intended to limit the present disclosure.
[0027] In this disclosure, unless stated otherwise, the used orientation words such as "up, down" are generally defined based on the orientation or positional relationship shown in the drawings, specifically refer to figure 1 The directions shown in the drawings are combined with the positional relationship of corresponding components in other drawings. In addition, the terms "first", "second", and the like used in the present disclosure are for distinguishing one element from another, and do not have sequence or importance. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or simila...
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The invention discloses a broadband torsional vibration test system. The broadband torsional vibration test system comprises a vibration table, a sliding table, a machine base, a fixed base and a rotating device, the fixed base is fixed to the machine base, a mounting plate is arranged on the upper portion of the fixed base and rotatably connected with the side wall of the fixed base, a hydrostatic bearing body is arranged in the fixed base and fixed to the lower side face of the mounting plate, and a mounting through hole is formed in the mounting plate; a bearing shaft is vertically fixed tothe lower side face of the adjustable rotating base of the rotating device, the lower end of the bearing shaft and the hydrostatic bearing body are installed in a matched mode through the mounting through hole, the adjustable rotating base is connected with a sliding plate through a flexible vibration excitation plate, and a test piece is fixed to the adjustable rotating base. According to the invention, the linear excitation force of the vibration table is converted into the torsional vibration load through the arrangement of the mechanism, and a technical means is provided for the broadbandsine and random torsional vibration environment test of large-mass products.
Description
technical field [0001] The invention relates to the technical field of torsional vibration tests, in particular to a broadband torsional vibration test system. Background technique [0002] Torsional vibration is an important environmental load in the working process of multi-layer rotary structure, automobile shock absorber, internal combustion engine crankshaft, steam turbine rotor, textile and other equipment. The consequences of accidents caused by torsional vibration are often catastrophic and the damage is extremely heavy. Most torsional vibration environments are sinusoidal vibrations, such as internal combustion engine crankshafts, steam turbine rotors, spinning equipment, etc. The random torsional vibration of the vibrator, etc. [0003] The current torsional vibration test equipment is mainly of mechanical cam type and motor type. The upper limit of the torsional vibration load frequency that can be realized by the mechanical cam type is tens of Hz, and the cont...
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IPC IPC(8): G01M7/02
CPCG01M7/022
Inventor 王东升欧阳智江肖世富毛勇建管鸿钧蒋宁胡勇王宇飞黄海莹张志旭刘青林程家军范庆辉何建军师伟鹏农绍宁赵怀耘田光明
Owner GENERAL ENG RES INST CHINA ACAD OF ENG PHYSICS