Automatic lifting device for wind speed monitor for wind tunnel

Abstract

The invention discloses an automatic lifting device for a wind speed monitor for a wind tunnel. The automatic lifting device comprises a bottom plate; a portal bracket is fixedly connected to the bottom plate; a rotating threaded stand column is arranged between a cross beam at the top of the portal bracket and the bottom plate; inclined supporting rods are respectively and fixedly connected between the tops of the two stand columns of the portal brackets and the bottom plate; a horizontal lifting bracket is movably connected to the two stand columns of the portal bracket and the rotating threaded stand column through a transverse bracket of the horizontal lifting bracket; a three-dimensional pulsation anemometer is fixedly connected to an extending bracket of the horizontal lifting bracket; a gear transmission device is connected to the bottom of the rotating threaded stand column, and is sequentially connected with a stepping motor and a pulse signal receiver which are mounted on the bottom plate; and the pulse signal receiver is connected with a programmable stepping motor controller positioned outside the bottom plate through a connecting wire. The automatic lifting device is simple in structure, low in cost, clear in operating principle, and good in real effect, and occupies a small space.

Description

technical field [0001] The invention belongs to the technical field of civil engineering, and specifically relates to a test device mainly used for carrying out wind resistance research for all structures such as buildings, structures or long-span bridges in the stage before the wind tunnel test of the atmospheric boundary layer wind tunnel when the wind field is debugged. Programmable stepping motor controller controls the position of the horizontal lifting bracket, which can realize the automatic lifting device of the wind tunnel wind speed monitor by selecting the required measurement height according to the test needs for data collection during the wind field debugging process, and obtaining the average wind speed and turbulence at different heights . Background technique [0002] In order to accurately grasp the effect of wind on the structure, it is generally necessary to conduct wind tunnel tests under different landforms and scale ratios. In the early stage of the te...

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Problems solved by technology

In the process of wind field commissioning, it is necessary to obtain the average wind speed and turbulence data at different heights, requiring multiple measurements at one height to take the average value, and one wind profile to measure at multiple different heights, while manual height adjustment requires multiple entry into the wind In the cave laboratory, the workload is huge and the process is cumbersome

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