Removable hand winding device and working method

Abstract

The invention provides a removable hand winding device and a working method. The device comprises a flange, and a protecting plate fixed at the lower part of the flange; a first pin shaft rotationallyconnected with a transmission shaft is arranged in the protecting plate; the flange is provided with a transmission shaft limiting groove for enabling the transmission shaft to move in the rotating direction of the first pin shaft; the transmission shaft is provided with a second pin shaft rotationally connected with a hook jaw; and the hook jaw is used for limiting and rotating a winding gear. The transmission shaft and the hook jaw form a lever structure under rotation of the first pin shaft and the second pin shaft, so that the turbine air blower rotor winding is safely and stably realizedin a power saving mode, the labor intensity of operators is greatly reduced, and the winding efficiency is improved; through design of the hook jaw and the winding gear, the winding device is more precise when an oil pump cannot work in regional power failure; the flange is matched and connected with a machine shell flange to achieve disassembly and installation; meanwhile, the damage problem ofpersons or equipment by winding is prevented; and the winding device is high in safety and practicability.

Description

technical field [0001] The invention relates to the technical field of steam turbine blower maintenance, in particular to a detachable manual cranking device and a working method. Background technique [0002] In general, the turbo blower is turned by hydraulic impact turning device before starting and after shutting down, so as to ensure the operation needs of the equipment. [0003] However, when the equipment is overhauled without dismantling the casing, it is often necessary to make the main shaft of the steam turbine rotate at a specific angle smoothly, which cannot be accurately realized by using the hydraulic impact barring device. The current manual cranking method is to use a crowbar to pry the main shaft or use methods such as driving to wind the rope. This kind of method is not safe and stable, and it is easy to cause damage to people or equipment. And a kind of steam turbine manual turning special tool of patent No. CN201510375807.8 adopts wrench to assist twist...

AI Technical Summary

Problems solved by technology

[0003] However, when the equipment is overhauled without dismantling the casing, it is often necessary to make the main shaft of the steam turbine rotate at a specific angle smoothly, which cannot be accurately achieved by using the hydraulic impact turning device.

The current manual cranking method is to use a crowbar to pry the main shaft or use a driving rope to wind the car. This method is not safe and stable, and it is easy to cause damage to people or equipment.

However, a special tool for manual turning of steam turbines in patent No. CN201510375807.8 uses a wrench to assist the twisting, and does not use the labor-saving lever principle, so the special manual turning tool proposed by this patent is a waste of manpower

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