Three-line pendulum rigid body rotational inertia measurement test device
A technology of rigid body rotation and test equipment, applied in the field of teaching equipment, can solve problems such as error-prone, low precision, time-consuming and labor-intensive, and achieve the effect of avoiding shaking and reducing shaking
Inactive Publication Date: 2017-08-11
ANHUI XINHUA UNIV
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Problems solved by technology
When using the ZME-1 multifunctional test bench for the three-wire pendulum experiment, the stopwatch is used for timing, that is, the traditional method of manual timing. This method is convenient for timing testing, but the accuracy is low, and the sensitivity of different operators' actions is different. unstable result
In order to reduce the error, it needs to measure more than 50 cycles each time, which is time-consuming, labor-intensive and error-prone
Method used
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[0015] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings, but the present invention can be implemented in many different ways defined and covered by the claims.
[0016] As shown in the accompanying drawings, a test device for measuring the moment of inertia of a three-wire pendulum rigid body includes a workbench 1, a support 2, a homogeneous disc 3 and three equal length lines 4, the support 2 is fixed on the workbench 1, and the three equal length lines 4 have one end They are respectively fixed on the concentric circles of the homogeneous disc 3, and the other end is fixed on the bracket 2. The three equal lengths 4 are mutually horizontal, and the tensile soft filaments are selected, and an infrared measuring device 5 and a balancer are also included. 3. The upper end surface is divided into 72 equally divided sectors by the scale line 30, and each scale line 30 is marked 31 in turn. The infrared detector...
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The invention discloses a three-line pendulum rigid body rotational inertia measurement test device comprising a workbench, a support, a homogeneous disc, and three equal-length lines. The support is fixed on the workbench. One ends of the three equal-length lines are respectively fixed to the concentric circles of the homogeneous disc, and the other ends are fixed to the support. The three-line pendulum rigid body rotational inertia measurement test device further comprises an infrared measurement device and a balancer. The upper end face of the homogeneous disc is equally divided into 72 sectors by scale lines numbered in turn. The infrared measurement device includes a light blocking film and a laser detector. As the homogeneous disc provided with scale lines, people can observe the angle of rotation easily. The infrared measurement device accurately records the time for one set of measurements. The homogeneous disc is rotated by a manipulator frame, and shaking is avoided. A clamping device can clamp the homogeneous disc. Both the manipulator frame and the clamping device can reduce the shaking of the homogeneous disc.
Description
technical field [0001] The invention belongs to the technical field of teaching appliances, in particular to a test device for measuring the moment of inertia of a three-wire pendulum rigid body. Background technique [0002] The moment of inertia of a rigid body is the measure of the inertia of the rigid body when it rotates. The moment of inertia is an important parameter in industrial fields such as scientific experiments and engineering practice. The value of the moment of inertia depends on the shape, mass distribution and position of the rotating shaft of the object. The demand for the test of the moment of inertia in the industrial sector is increasing day by day. The three-wire pendulum is widely used because of its simple test and easy to meet the experimental conditions. , to calculate the value of the moment of inertia. Although the application principle of the three-wire pendulum is relatively mature, how to effectively improve the test accuracy is still a probl...
Claims
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IPC IPC(8): G01M1/02G01M1/10G09B23/10
CPCG01M1/02G01M1/10G09B23/10
Inventor 杨坦汪洋李博韬李俊丁卿辰柴刚姚坤
Owner ANHUI XINHUA UNIV