Pneumatic lifting tool for nuclear power plant

Abstract

A pneumatic lifting tool for a nuclear power plant is disclosed, which comprises a lifting tool body, lifting columns, cylinder devices and an air tube, wherein a plurality of cylinder devices are disposed on the periphery of the lifting tool body; the lifting column is connected at the outer side of each cylinder device; the air tube is connected with the cylinder devices and used for providing intake air and exhaust air to the cylinder devices; and the cylinder devices provide a push force and a pull force to the corresponding lifting columns according to the intake air and the exhaust air provided by the air tube, so that the lifting columns stretch into different depths in the lifting tool body. The pneumatic lifting tool disclosed by the invention uses cylinders as a drive force for realizing high-reliability lifting for an object; and the lifting tool still keeps a grabbing state on the lifted object in an accidental working condition of sudden power-off, thereby efficiently avoiding the occurrence of accidental unhooking failure. Moreover, the pneumatic lifting tool has no need of power supply, as well as is suitable for being used in working environment without power supply, capable of being used for lifting and operating the spent fuel storage tanks of high temperature gas-cooled reactor nuclear power plant and other types of nuclear power plants, and capable of being applied to lifting for various containers in the common industry.

Description

technical field [0001] The invention relates to the technical field of slings, in particular to a pneumatic sling used in nuclear power plants. Background technique [0002] As we all know, a spreader is a tool for hoisting various types of equipment. The existing lifters include electromagnetic and pneumatic types, and the driving force provided by the outside is mainly used to allow the equipment to lift objects. Because the object is hoisted by external force, once the external force disappears due to an accident, a drop accident of the hoisted object will occur, endangering the safety of the operator and the hoisted object. [0003] In dangerous environments such as nuclear and high temperature, the reliability of the lifting gear is required to be higher. Under various working conditions, the safety of lifting objects must be guaranteed. After the Fukushima nuclear power accident in Japan in March 2011, the inherent safety of nuclear power plants has been widely valued...

AI Technical Summary

Problems solved by technology

[0004] The existing spreader cannot avoid accidental decoupling accidents, and cannot adapt to special environments such as nuclear and high temperature

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