Automatic unhooking and coupling device

Abstract

The invention discloses an automatic unhooking and coupling device. The automatic unhooking and coupling device comprises a pin shaft assembly used for carrying out unhooking and coupling operation, and a rotating assembly used for driving the pin shaft assembly to rotate in the horizontal direction. The pin shaft assembly comprises a hoisting device, a movable pin shaft, a first power device anda first transmission device. The first transmission device drives the movable pin shaft to move in hoisting side walls so as to switch the coupling state and the unhooking state. In the coupling state, the two opposite ends of the movable pin shaft are connected with the two opposite hoisting side walls respectively. In the unhooking state, at least one end of the movable pin shaft is disengaged from the hoisting side walls so as to form an open space allowing a lifting lug to get in and out. The rotating assembly is fixedly connected with the pin shaft assembly and drives the movable pin shaft to rotate in the horizontal direction. According to the automatic unhooking and coupling device, through the cooperative use of the rotating assembly and the pin shaft assembly, the automatic unhooking and coupling functions are achieved, the situation that workers climb to a high position to manually carry out coupling and unhooking work is avoided, the falling risk of the workers is eliminated, the irradiation dose borne by the workers is reduced, and meanwhile the work efficiency is improved.

Description

technical field [0001] The invention relates to the field of mechanical automation, in particular to an automatic decoupling device. Background technique [0002] In the maintenance work of reactor pressure vessels in nuclear power plants, according to different maintenance stages, it is necessary to perform the work of disassembling and assembling three guide columns. There is a risk of collision. Since the guide column is 5 meters high and there is no special maintenance work platform at the top working point, when disassembling the guide column, the staff need to borrow a vertical ladder to climb 5 meters high to carry out the work of connecting and unhooking the hook. Two people assist with the escalator, and the person climbs the vertical ladder, with a drop of about 5 meters, and the potential risk of people falling is relatively high. Simultaneously, because the personnel need to be close to the reactor core when performing this work, the staff have to receive a lar...

AI Technical Summary

Problems solved by technology

Since the guide column is 5 meters high and there is no special maintenance work platform at the top working point, when disassembling the guide column, the staff need to borrow a vertical ladder to climb 5 meters high to carry out the work of connecting and unhooking the hook. Two people assist with the escalator, and the person climbs the vertical ladder, with a drop of about 5 meters, and the potential risk of people falling is relatively large

At the same time, because the personnel need to be close to the reactor core when performing this work, the staff have to receive a large radiation dose, and the manual disassembly work is inefficient

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