A semi-automatic control method of portal crane

Abstract

The invention discloses a semi-automatic control method of a gantry crane; based on a PLC and a rectifier module, an inverting device and a control unit exchange data in real time; firstly, the PLC gives a starting command to the control unit; the control unit starts the rectifier module; the crane is initialized for setting; and a crane grab is recovered to an initial position; then, the crane grab is automatically opened; the PLC gives a rotating amplitude change command to control the grab to operate to a set taking coordinate position; after the grab operates in place, the PLC gives a descending command to control the grab to descend to a taking position; and the grab automatically digs deeply and is closed; then, the PLC gives a rising command to control the grab to rise to a preset unloading height, and gives the rotating amplitude change command to control the grab to operate to a set unloading coordinate position; and finally, after the grab operates to the set unloading coordinate position, the grab is opened for unloading to finish once taking and unloading process. The method has the advantages of improving the production efficiency and reducing the labor intensity of workers.

Description

technical field [0001] The invention belongs to the field of automatic control of port machinery, in particular to a semi-automatic control method of a portal crane. Background technique [0002] With the development of automation technology, smart ports and automated terminals are under construction and development. Container cranes and some bridge unloaders have gradually realized semi-automatic operation or a certain degree of full automation. At present, automation, informatization, and digitization are the development trend of port equipment, and energy conservation and environmental protection are the general trend of enterprise survival. [0003] Portal crane is the most typical electric loading and unloading machinery with the largest number and use of port terminals, complex structure and mechanism. Due to its good working performance, unique superior structure and good versatility, it is widely used in port general cargo terminals. The working mechanism of the ga...

AI Technical Summary

Problems solved by technology

According to the traditional control method, all of these need to be judged and operated manually; and the complexity and flexibility make the working conditions of the door machine uncertain, so that the current door machine operations at home and abroad are limited to the manual operation of the driver. Anti-collision and anti-sway are all dependent on the driver's operation, which is labor-intensive and highly dependent on the driver

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