A leveling device for wind measuring instruments on large cables of long-span suspension bridges

A technology for leveling devices and suspension bridges, applied to measuring devices, instruments, speed/acceleration/shock measurements, etc., can solve problems such as human error cannot be eliminated, high risk factor, and difficult leveling, so as to avoid potential safety hazards and The effect of leveling error, avoiding disturbance effect and reducing workload

Active Publication Date: 2021-08-03
SOUTHWEST JIAOTONG UNIV
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Problems solved by technology

Especially for the wind measuring instruments installed on the main cable of the suspension bridge, it is necessary to set up a ladder on the main cable to level the multiple instruments one by one. Not only is the risk factor high, the operation is cumbersome, but also the leveling is difficult, and human operation errors cannot be eliminated.
Therefore, the method of artificially leveling the wind measuring instrument on the bridge needs to be improved.

Method used

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  • A leveling device for wind measuring instruments on large cables of long-span suspension bridges
  • A leveling device for wind measuring instruments on large cables of long-span suspension bridges
  • A leveling device for wind measuring instruments on large cables of long-span suspension bridges

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Embodiment Construction

[0018] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0019] The invention provides an intelligent leveling device for a wind measuring instrument on a large cable of a long-span suspension bridge. When the wind measuring instrument at the bridge position is displaced due to unfavorable factors, the invention can detect the skew of the wind measuring instrument in real time, and automatically adjust the angle of the instrument in time according to the degree of inclination of the instrument to keep the instrument completely level. The inventive device can detect the angle of the wind measuring instrument in real time, and responds quickly; after the device is installed for the first time, it can realize the full automation of the leveling process during use; it can be adapted to the leveling work of the wind measuring instrument in various situations.

[0020] Such as figure 1 and fig...

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Abstract

The invention discloses a leveling device for a wind measuring instrument on a large cable of a large-span suspension bridge. The supporting steel plate is fixed on the crossbeam of the inspection road, and a platform panel for fixing the supporting rod of the wind measuring instrument is arranged above it. The supporting steel plate and the platform There is a controller and three leveling parts with the same structure between the panels; the controller receives the inclination data sent by the sensor, calculates the adjustment range of each servo motor according to the current inclination situation, and sends the adjustment command to the corresponding programmable Logic controller; the programmable logic controller turns on the servo motor, and the output end of the servo motor reducer is vertically provided with a ball screw; the matching screw nut is fixedly connected to the platform panel to drive the platform panel to lift and level. The invention can detect the inclination of the wind measuring instrument in real time, automatically adjust the angle of the instrument in time according to the inclination degree of the instrument, keep the instrument completely level, greatly reduce the workload of manual leveling, and improve the accuracy of wind measurement data.

Description

technical field [0001] The invention relates to the technical field of intelligent leveling, in particular to a leveling device for a wind measuring instrument on a large cable of a long-span suspension bridge. Background technique [0002] Long-span bridges are sensitive to wind loads. Facing the wind resistance requirements of long-span bridges, determining the wind parameters at the bridge location is one of the basic tasks. On-site measurement is the most effective means to accurately describe the wind characteristics at the bridge location. In order to meet the needs of measuring the spanwise wind characteristics of long-span suspension bridges, wind measuring instruments are arranged on the large cables in an orderly manner. Wind data are sensitive to wind instrument inclination, which necessitates strict leveling of wind instruments. Affected by strong winds and structural vibrations, etc., wind measuring instruments will inevitably slip or rotate, resulting in inc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01P1/00
CPCG01P1/00
Inventor 余传锦李永乐何佳勇陈潜张明金
Owner SOUTHWEST JIAOTONG UNIV
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