Forced vibration damping compound pendulum experimental instrument

A technology of forced vibration and experimental instruments, applied in the field of experimental instruments, can solve the problems of insufficiently advanced experimental measurement methods and inaccurate quantification

Inactive Publication Date: 2016-01-27
南京千韵电子科技有限公司 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, for the invention applied for at that time, the experimental measurement method was still not advanced enough, and although the intuitiveness of the display of th

Method used

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  • Forced vibration damping compound pendulum experimental instrument
  • Forced vibration damping compound pendulum experimental instrument
  • Forced vibration damping compound pendulum experimental instrument

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Experimental program
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Embodiment Construction

[0036] according to figure 1 and figure 2 As shown in the structural diagram, the swing rod (1) of the compound pendulum is connected with the pendulum (2), the pendulum plate (3) and the moving shaft (7), and installed in the moving shaft box (8) through the bearing (23). ), the moving shaft box (8) is installed on the slide block and the linear guide rail (9). Under the condition of not being driven by external force, the pendulum (1), the pendulum (2) and the arc pendulum (3) ) composed of compound pendulum can freely swing around the moving shaft (7). The period of its free swing conforms to the vibration law of a compound pendulum. A magnetic sensor box (10) is installed at the rear portion of the mobile shaft box (8). There is a set of connecting rod device (15) on the right side of the moving shaft box, which is pushed and pulled by the eccentric shaft on the drive wheel gear (14) on the rotating shaft of the speed regulating motor (13), so that the moving shaft box...

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Abstract

Provided is a forced vibration damping compound pendulum experimental instrument. A compound pendulum formed by a rigid thin rod, a pendulum bob and an arc pendulum sheet is adopted to serve as a research object of forced vibration. The compound pendulum and a mobile rotating shaft are connected to form a whole body, which is disposed in a mobile rotating shaft box through a bearing. The compound pendulum can freely swing. The mobile rotating shaft box is disposed on a slide block and a linear guide rail. A speed regulation motor pushes and pulls the mobile rotating shaft box by means of an eccentric shaft on a driving wheel and also a connecting rod device, the circular motion of the eccentric shaft on the driving wheel of the motor is transformed to the reciprocating rectilinear motion of the mobile rotating shaft box, and then energy is transmitted for forced vibration of the compound pendulum. Furthermore, a non-contact type magnetic angle sensor is utilized to measure rotation conditions of the driving wheel of the speed regulation motor and the compound pendulum, and measured parameters and a corresponding changing curve are displayed on a colorful liquid crystal screen of an instrument host in a quantified manner.

Description

technical field [0001] The invention relates to a mechanical experimental instrument in physics, in particular to a forced vibration damping compound pendulum experimental instrument for studying the physical laws of forced vibration. Background technique [0002] Some existing physical experiment instruments for studying forced vibration have a common feature of using a disc rotating on a fixed axis, so that it can twist and vibrate back and forth around the rotating shaft of the disc under the torque of the torsion spring. At the same time, a periodic external torsional moment is used to indirectly exert a forced moment on the disc, so as to achieve the purpose of forcing the disc to vibrate. The above-mentioned physical experimental instruments for studying forced vibration are not adjustable because of the inherent vibration frequency when the disk vibrates, and the observation of the angle of rotation is not intuitive enough. The experimental functions of the instrument...

Claims

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Application Information

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IPC IPC(8): G09B23/10
Inventor 钱仰德吴庆春雷撼张凯
Owner 南京千韵电子科技有限公司
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