Multi-mode amplitude control system of crank arm type overhead working truck

Abstract

The invention discloses a multi-mode amplitude control system of a crank arm type overhead working truck. A platform weighing sensor is arranged on a work platform and detects the load capacity of the work platform, a first arm length and angle sensor and a second arm length and angle sensor detect the amplitude variation angles and telescopic length of a first telescopic arm and a second telescopic arm, and a double-shaft tilt angle sensor is arranged on a rotary table and detects the tile angle of a truck body. Supporting leg stress detecting devices are used for detecting whether supporting legs are stressed or not. A controller calculates the actual amplitude of the first arm and the second arm according to signals detected by the first arm length and angle sensor, the second arm length and angle sensor, the platform weighing sensor, the double-shaft tilt angle sensor and the supporting leg stress detecting devices, the actual amplitude is compared with an amplitude limiting mode, an amplitude control curve is output, the corresponding amplitude variation and telescopic motion of the first arm and the second arm is controlled, multi-mode amplitude control is achieved, and the control system is flexible and variable, and meets different work conditions.

Description

technical field [0001] The invention relates to a multi-mode amplitude control system and an aerial work platform, belonging to the technical field of machinery. Background technique [0002] Aerial work vehicle is a kind of professional equipment that lifts people or equipment tools to a designated position at a certain height to carry out operations. There are many forms of aerial work vehicles, mainly including scissor type, folding arm type, straight arm type and so on. The articulated boom aerial work platform has two folding arms at the same time and can be telescopic, which can better meet different working conditions. like figure 1 The model shown, with a telescopic arm, may cause instability due to the change in the position of the center of gravity when the arm is extended, and if the range limit of the car itself is exceeded, it may cause the car body to tip over. Therefore, how to control the amplitude is very important. The multi-mode range control system ca...

AI Technical Summary

Problems solved by technology

[0004] The application fields of aerial work platforms are becoming wider and wider, and the working conditions used are becoming more and more complex. A single-mode aerial work platform cannot meet the application under complex working conditions, and work efficiency will be greatly reduced.

Most of the articulating arm type self-propelled aerial work vehicles are a kind of amplitude control system. In complex and changeable workplaces, a single amplitude control system can only complete the work in a specific mode, and the adaptability is relatively poor; the control is relatively simple and cannot adapt The requirements of various working conditions affect the overall work efficiency and cannot give full play to the advantages of the vehicle

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