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A device and method for dynamically measuring angular displacement

A technology of angular displacement and measurement, applied in the direction of measuring devices, electrical devices, instruments, etc., can solve the problems of high installation requirements, high cost, unfavorable one-time mass adoption, etc., and achieve the effect of simple data analysis and reliable measurement values

Inactive Publication Date: 2017-05-17
DALIAN UNIV OF TECH
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Problems solved by technology

[0003] The invention is a device for dynamically measuring angular displacement, which overcomes that the existing device cannot be conveniently applied to the measurement of fast and dynamically changing angular displacement between engineering structural components, small-scale model tests and engineering real-time monitoring; solves the problem of existing angular displacement measuring devices The installation requirements are high and the cost is expensive, which is not conducive to the current situation of a large number of one-time use in the dynamic load test of civil structure models

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  • A device and method for dynamically measuring angular displacement
  • A device and method for dynamically measuring angular displacement
  • A device and method for dynamically measuring angular displacement

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Embodiment Construction

[0013] The specific embodiments of the present invention will be described in detail below in conjunction with the technical solutions and accompanying drawings.

[0014] As shown in the figure, the threaded sleeve 3 is arranged in the interval on one side of the metal plate a, and the threaded sleeve 3 is also intermittently arranged on one side of the metal plate b, so as to ensure that the central axis of the threaded sleeve 3 is in line with the two metal plates. The axes of rotation of the lower surfaces coincide. A sleeve 4 with the same diameter as the threaded sleeve 3 is externally connected to one end of the threaded sleeve 3 to ensure that the central axes of the sleeve 4 and the threaded sleeve 3 are on the same straight line, and a limit hole is set in the sleeve 4 5.

[0015] As shown in the figure, the threaded sleeves 3 are engaged with each other, so that the two metal plates can rotate around the central axis of the threaded sleeves 3 . The precision thread...

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Abstract

The invention discloses a dynamic angular displacement measuring device and a method. According to the device, a metal plate a is fixed on a structural surface a, a metal plate b is fixed on a structural surface b, the metal plate a and the metal plate b are connected with a threaded sleeve, a sleeve is connected with the external of the threaded sleeve, and the sleeve is provided with a limiting hole. A precise thread lead screw is arranged inside the threaded sleeve. A square rod is connected with the external of one end of the precise thread lead screw. The square rod penetrates through the limiting hole. A metal strain slide glass is arranged between the square rod and the sleeve. A strain gage is stuck on the metal strain slide glass. The strain gage is connected with a strain data collecting instrument through an electrical conductor. According to the dynamic angular displacement measuring device and the method, an angular displacement which rotates around an axis is converted into a linear displacement of an assigned direction. Based on a strain gage technological dynamic measuring value, the device and the method are beneficial for the measurement on rapid and dynamic changing angular displacements among engineering structure components under fast loading conditions such as earthquakes and the electromechanical vibration, and are suitable to be employed in small-sized model testing or engineering monitoring.

Description

technical field [0001] The invention belongs to the technical field of real-time monitoring of earthquake engineering structure deformation, and is especially suitable for rapid dynamic deformation measurement of angular displacement between engineering structure components under rapid loading conditions such as earthquakes and electromechanical vibrations, and is suitable for small-scale model tests or engineering monitoring. In particular, a device for dynamically measuring angular displacement is adopted, which converts dynamic angular displacement measurement into linear displacement measurement. Background technique [0002] Under dynamic loads such as earthquakes and electromechanical vibrations, there will be continuous dynamic and rapid changes in relative angular displacement between structural components, such as measuring the dynamic angular displacement of the consolidation end of a steel structure cantilever beam in civil engineering. The magnitude of the angle ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B7/30
Inventor 李建波梅润雨周磊刘俊林皋
Owner DALIAN UNIV OF TECH
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