Wind load testing device and method of vehicle-mounted mast lifting system

Abstract

The invention discloses a wind-power-controllable wind load testing device and method of a vehicle-mounted mast lifting system. A set equivalent wind power value is converted into a corresponding voltage signal to be sent to each proportional pressure-regulating valve, the size of an opening is regulated by using the proportional pressure-regulating valves, and furthermore, the pressure of an air cylinder is regulated, so that the thrust of the air cylinder can be continuously regulated; a movable pulley is pushed by a piston rod of the air cylinder, so that a tension is generated on a steel wire rope; the tension generated on the steel wire rope is acted on a multisection telescopic vehicle-mounted mast and a counter weight through a tension sensor, voltage values are transmitted to a computer through the tension sensor, all the voltage values are converted into corresponding tension values through the computer, and voltages are output through control and regulation, so that the actual tension value acquired by the tension sensor is gradually close to and up to the actually output wind power value; and a strain value of a strain foil is acquired in real time during test, so that the deformation and stress conditions of a mast during wind load test can be detected. By using the wind-power-controllable wind load testing device and method of the vehicle-mounted mast lifting system, the test space can be saved, the stroke of the piston rod can be reduced; and the testing precision can be improved, and different wind power detecting requirements can be met.

Description

technical field [0001] The invention relates to the field of wind load testing of a mast system, in particular to a wind force controllable wind load testing device and method for a vehicle-mounted mast lifting system. Background technique [0002] In order to improve the scope of vehicle-mounted reconnaissance and enhance the self-concealment ability of reconnaissance vehicles, Chen Lixue and others in China have studied a vehicle-mounted elevating mast system. The system is located on the reconnaissance vehicle and consists of several thin-walled hollow masts. The mast adopts a composite structure combining hydraulic drive and mechanical transmission. Various detection equipment are installed on the top of the mast. When the mast is fully extended, it can reach a maximum of more than ten meters, which greatly increases the detection range of the reconnaissance vehicle. [0003] There are relatively few studies on the vehicle-mounted mast lifting system in China. Chen Lixu...

AI Technical Summary

Problems solved by technology

Because the vehicle-mounted mast lifting system is composed of many sections, in order to increase the detection distance, the height of the mast is generally more than 10 meters and the cross-sectional area is small. When affected by the wind, the top offset is relatively large. Considering the structural characteristics and test accuracy of the vehicle-mounted mast system , cost and other issues, so the above methods are not suitable for the wind load test of the vehicle-mounted mast lifting system

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