Swing angle detection device for multi-hanger bridge crane

Abstract

The invention provides a swing angle detection device for a multi-hanger bridge crane. According to the single-slit diffraction and light-sensing principles, hanger swing angle rotation information isconverted into an electric signal and a digital signal, and a diffraction pattern is generated through the diffraction of a single-slit grating. The stripe width and the bright stripe center positionof the light diffraction pattern are detected and processed by using a light-sensitive diode PN junction array and a digital-to-analog conversion chip, swing angle information of hangers and a load is calculated, and the calculated swing angle information is transmitted to crane operators for reference or fed back to a bridge crane control system for anti-shake control, so that the operation efficiency of the operators is improved, and the work pressure is reduced. The device is simple in structure, low in cost, simple to maintain, easy to manufacture, high in anti-interference capability, high in detection precision and high in measuring speed, is not affected by severe weather and can achieve accurate positioning, the swing angle can be obtained through conversion, and the requirement of actual bridge crane swing angle measurement can be met.

Description

technical field [0001] The invention relates to a swing angle detection device of a multi-slinger bridge crane. Background technique [0002] In the existing large-scale container loading and unloading ports, the existing bridge cranes only have single spreader and double spreader cranes. Such bridge cranes can only carry one or two containers at a time during the process of moving goods. The efficiency of handling and loading and unloading is very low and time-consuming, which affects the quality of work. In order to improve the loading and unloading efficiency of bridge cranes, in the future development of bridge cranes, bridge cranes will develop in the direction of multi-spreader bridge cranes, with continuous improvement and innovation. Therefore, under the background of multi-slinger bridge cranes, various detection devices for multi-slinger bridge cranes are extremely important, that is, how to use one device to simultaneously detect the swing angle and swing rope le...

AI Technical Summary

Problems solved by technology

[0003] Existing bridge crane detection devices are designed for single or double spreader bridge cranes. They all use relatively complicated detection instruments for the detection of spreaders, which are expensive, inconvenient to maintain and low in accuracy.

Moreover, this type of detection device is not suitable for swing angle detection of multi-spreader bridge cranes.

At the same time, the existing container crane operators often use their eyes to observe the spreader and the load to obtain its swing situation. This method is not only inaccurate but also easily leads to work fatigue, which affects the handling efficiency and quality of the crane.

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