Alignment and safety control system and method for trucks under bridge crane in container wharf

Abstract

The invention discloses a system and method for alignment and safety control of trucks under bridge cranes of container wharves. Through a rotating platform, a laser scanner, a system operation control unit and an LED display screen, the accurate identification of the deviation distance between the position of a truck and the benchmark lifting point of an offshore bridge is realized, and the direction of the truck deviating from the lifting point of the offshore bridge and the distance information are displayed on the LED display screen to prompt the driver of the truck to adjust the truck parking position; meanwhile, the operation control unit is connected with a PLC to obtain the type information of the container which runs at present so as to realize the guidance of the truck parking position; a control system of the PLC judges whether the truck is in place through the interface, and controls a lifting device to keep a safety height and forbids the lowering action of the bridge lifting driver when the truck is not aligned so as to prevent the truck from being damaged by the lifting device.

Description

technical field [0001] The invention relates to the technical field of loading and unloading machinery on the shore of a container wharf, in particular to a system and method for alignment and safety control of trucks under bridge cranes in a container wharf. Background technique [0002] Bridge cranes operating on the shore are the core operating machinery of specialized container terminals, and their operating efficiency and safe production directly affect the loading and unloading speed of ships. In the actual production process of the bridge crane, when the spreader lifts the container from the collection truck or places the container on the collection truck, the traditional method needs to rely on the collection truck driver to move the collection truck back and forth repeatedly through personal visual inspection to complete the collection truck. Alignment with spreader. This alignment process reduces the loading and unloading speed of the container and increases the d...

AI Technical Summary

Problems solved by technology

This alignment process reduces the loading and unloading speed of the container and increases the driver's operational fatigue. At the same time, it is difficult to completely avoid the collision between the spreader, the container and the truck, causing damage to the equipment and bringing many safety hazards

[0003] At present, in the prior art, a pan / tilt, a laser scanning rangefinder, and a controller are installed under the bridge crane, the controller is used to set the designated lane, and the pan / tilt is used to control the laser scanner to scan the designated lane, reminding the set The deviation of the alignment of the truck driver; however, in actual use, it is found that because the actual size of the container to be placed by the bridge crane cannot be obtained when the truck is empty, it is impossible to judge the parking position of the truck, resulting in the lack of system functions. In addition, The selection of the truck lane can only be set once and cannot be adjusted flexibly, which causes inconvenience in practical application. In addition, the current system only performs alignment detection on the truck, and there is also a lack of function in terms of safety protection. It is difficult to achieve practical results in the current application of the alignment of trucks under the bridge crane

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