Gantry Crane Automatic Control System and Control Method

Abstract

The invention discloses an automatic control system of a portal crane. The automatic control system comprises the portable crane, positioning emission devices and data processing equipment, wherein a first positioning emission device is arranged at the center position of a trolley; a first distance detector is arranged at the bottom of a lifter; second positioning emission devices are arranged at four corners of the top surface of a container; a second distance detector is arranged on the bottom surface of the container; the data processing equipment receives information transmitted by the first positioning emission device, the second positioning emission devices, the first distance detector, a weighing device and the second distance detector; the data processing equipment can also control operation of a driving mechanism and a lifter winding and unwinding mechanism. The invention also provides a control method of the control system. Due to simple combination of the positioning emission devices and sensors, the running of the trolley and the unwinding of the lifter can be automatically controlled, and the running speed of the trolley and the unwinding speed of the lifter can be controlled according to an actual condition, so that unstable factors caused by manmade operation are eliminated.

Description

technical field [0001] The invention belongs to the technical field of crane automatic control, and in particular relates to an automatic control system of a gantry crane. Background technique [0002] In order to meet the rapid development of economic and trade globalization, cranes as an important logistics tool are developing towards high parameters and large-scale development, and the operating speed and lifting height of the crane mechanism have also been greatly increased. In ports and storage yards, it is often necessary to load and unload cargo such as containers between docks, storage yards, ships and cars. During the loading and unloading process of container cranes, manual operation is generally used. It takes a lot of time to adjust the spreader to the appropriate position to grab the container. New drivers often have to adjust the crane cart and trolley several times to make the crane Even a skilled driver needs to adjust the spreader several times to grab the ...

AI Technical Summary

Problems solved by technology

During the loading and unloading process of container cranes, manual operation is generally used. It takes a lot of time to adjust the spreader to the appropriate position to grab the container. New drivers often have to adjust the crane cart and trolley several times to make the crane The spreader grabs the container, the efficiency is low, even a skilled driver needs to adjust the spreader several times to grab the container

In addition, controlling the landing and lifting process of the spreader also requires precise control. If the landing is too fast, the spreader will easily hit the top of the container, causing damage to the spreader or the container. If the lifting is too fast, it will easily cause local tension in the cable Too large, if things go on like this, it is easy to shorten the service life of the crane

[0003] In addition, it is always difficult to avoid misoperation in the process of human manipulation. Due to the large mass of the container, a little carelessness will cause immeasurable consequences. Therefore, it is inevitable to develop a crane system that automatically controls the operation.