Safety control method for vertical shaft grab bucket hoisting system and control system of same

Abstract

The invention relates to a safety control method for a vertical shaft grab bucket hoisting system and a control system of the safety control method. The method comprises the following steps: transmitting construction site images of the grab bucket hoisting system through a video monitoring device; in the video monitoring device, recording the construction site images through a video camera which operates together with a crown block by which the grab bucket hoisting system is driven, and transmitting the construction site images recorded by the video camera to a synview and a monitor sequentially through a video cable. Compared with the prior art, the safety control method and the control system thereof effectively solve the problem of safety hazard in the operation of a conventional grab bucket hoisting system, are low in manufacturing cost, are recyclable, are easy to maintain, provide adequate security for safe operation of the grab bucket hoisting system, effectively prevent accident, and guarantee safe and reliable operation of hoisting equipment, thereby being suitable for popularization and application in the fields of crane machinery in urban subway construction and other relative fields.

Description

technical field [0001] The invention relates to the technical field of equipment for ensuring the safe operation of hoisting machinery, in particular to a control method and a control system for the safety of a vertical shaft grab lifting system in urban subway construction. Background technique [0002] At present, bridge cranes are generally used for excavating slag and hoisting equipment for underground excavation shafts in urban subway construction. The standard span is 10.4m, and the distance between columns is 7m, totaling 21m. As a special equipment with very high safety requirements, hoisting machinery is very prone to personal injury accidents if it is operated in violation of laws and regulations such as poor machine condition, improper maintenance, or low safety awareness of the operator. [0003] The frequent occurrence of safety accidents of hoisting machinery is mainly due to the following defects in the operation process: (1) The slag discharge and hoisting op...

AI Technical Summary

Problems solved by technology

As a special equipment with very high safety requirements, hoisting machinery is very prone to personal injury accidents if the construction operation is in violation of laws and regulations such as poor machine conditions, improper maintenance, or low safety awareness of the operator.

[0003] The frequent occurrence of safety accidents of hoisting machinery is mainly due to the following defects in the operation process: (1) The slag discharge and hoisting operations are blocked due to improper communication between the signal worker and the operator or the weak communication signal; (2) During the excavation stage of the shaft, mechanical excavation will cause dust to fly and the stage of wall spraying and anchoring will cause serious mud particles. In addition, the tail gas produced by electric welding operations and excavator excavation operations in the tunnel will cause high pressure in the tunnel fan. Under the action, a certain amount of dust will be generated at the wellhead of the shaft, which will seriously affect the sight of the operating driver, which will easily cause injury and safety accidents; (3) The lifting operation standards are not clear, and the construction personnel's binding skills are rough

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