Anti-collision control method for gantry crane lifting trolley

Abstract

The invention relates to an anti-collision control method for a gantry crane when lifting a compact car. The method comprises reading the message of laser line scanning safe door curtain and the walking direction of the compact car which is generated by a sensor at scanning position of the laser lines, the message of the swaying of workpiece and the length of a lifting rope, dynamic real-time measuring in an anti-collision protection zone and calculation and treatment for displaying the distance of hoisting workpiece and support legs of the gantry crane, and treatment operation of preventing the collision of the hoisting workpiece and the support legs of the gantry crane in the moving process of a compact car. The anti-collision control method is adopted for dynamic and real time measuring in the anti-collision protection zone and displaying the distance of the hoisted workpiece and the support legs of the crane and realizes automatic or manual closed loop control. Combined with the hoisting control technique, anti-shaking technique, anti-collision technique, the method effectively prevents the collision of the hoisted workpiece and the support legs of the crane in the moving process of the compact car, is economical and practical, safe and reliable, has simple structure, low cost, wide applicable range and solves the safe problem of the running corrosion of the compact car inthe hoisting process.

Description

technical field [0001] The invention relates to the technical field of gantry crane loading and unloading, in particular to the field of an operation control system during the gantry crane hoisting process, and specifically refers to an anti-collision control method for a gantry crane hoisting trolley. Background technique [0002] In modern society, gantry cranes are important equipment in industrial production. They play an extremely important role in the production and installation of large equipment. Especially in shipyards, gantry cranes often develop to a height of nearly 100 meters and a span of more than 100 meters or even 200 meters. In addition, in order to meet the work efficiency, the running speed of the gantry crane also has certain requirements, so the requirements for the driver's driving and operation are getting higher and higher. The gantry crane is prone to collision during the trolley walking process, the main reasons are: [0003] 1. The objects hoiste...

AI Technical Summary

Problems solved by technology

[0003] 1. The shape, length and size of the objects hoisted by the gantry crane are different, so the driver cannot accurately know the distance between the workpiece and the supporting legs of the crane during operation

[0004] 2. During the hoisting movement of the gantry crane, the driver often cannot see or clearly see the overall shape of the hoisted object, and cannot accurately judge the distance between the hoisted object and the supporting legs of the crane

[0005] 3. During the hoisting movement of the gantry crane, due to movement, wind or other external forces, the object will sway, which will also affect the judgment of the object's trajectory and position distance

[0006] 4. During the hoisting movement of the gantry crane, since the hoisted workpiece is often heavy and the hoisting rope is long, it is easy to cause the hoisted workpiece to hit the supporting legs of the gantry crane due to inertial swing, resulting in serious accidents

[0007] 5. When driving a gantry crane, the driver operates at a height of about 100 meters, which requires high driving precision, high strength, easy fatigue, and distraction. (Effective display and / or alarm prompts are required)

[0008] 6. The driver's cab is often fixed on the side of the rigid leg, and the observation of the suspended object is often not on a vertical line, so it is difficult to observe and control the precise position of the horizontal movement of the object, especially when it is far away from the rigid leg or close to the flexible leg. When side hoisting

For the sake of safety, the crane runs at a slow speed during the hoisting process, or takes a "gate-shaped" motion track, which can reduce the swing of the object, but this greatly affects the production efficiency and increases equipment energy consumption and mechanical wear

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