Deviation rectifying method of tyre type container gantry crane

Abstract

The invention discloses a deviation correction method for a tire type container gantry crane, the deviation correction method is implemented by means of detection signals fed back by ultrasonic sensors arranged on the gantry crane, and comprises following steps of: a. the ultrasonic sensors comparing the distance between the tire type gantry crane and the position reference object with a given value then outputting detection signals; b. a controller receiving the detection signals outputted by the ultrasonic sensors, and performing logic operation according to the running direction of the tire type gantry crane to determine and output control signals; c. a motor control part receiving the control signals outputted by the controller, and controlling the operation of the motor according to the control signals. The invention can ensure satisfied deviation correction effect and preferable cost control.

Description

technical field [0001] The invention relates to the field of tire-type container gantry cranes, in particular to a deviation correction method for tire-type container gantry cranes. Background technique [0002] Rubber-tyred container gantry cranes play an extremely important role in the loading and unloading of containers in ports and terminals. Because the space under it is used to accommodate stacked containers, the rubber-tyred container gantry crane can only move along a straight line when it is working, otherwise it is easy to hit the container, causing economic losses, and even endangering the operation of the rubber-tyred container gantry crane. safety of personnel. Especially in some large port terminals, in order to improve the utilization rate of the storage yard, the distance between adjacent container areas is relatively small. If the direction is deviated, it is easy for equipment to collide or hit the facilities or containers on both sides of the rubber-tyre...

AI Technical Summary

Problems solved by technology

However, the disadvantage of this method is that it is seriously affected by weather conditions. For example, in rainy, foggy, and snowy weather, it is difficult for the operator to clearly observe the marking line, so that accurate direction correction cannot be performed.

[0004] In order to solve this problem, in recent years, an intelligent correction method using GPS global satellite positioning technology has emerged, that is, the differential GPS system is used to correct the deviation on the rubber-tyred container gantry crane, but the system must be set up in the port wharf. A large number of hardware devices such as base stations, mobile stations, and receivers, so that expensive equipment needs to be purchased, and there must be no obstructions such as tall buildings and mountains around the yard to ensure the GPS reception effect. In order to avoid signal interference, local Apply for radio frequency points, therefore, the cost of this approach is very high

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