Internal-swelling type stator hoisting special purpose tools

Abstract

The invention relates to a generator assembly process, comprising an elevated working platform, an internal-swelling lifting tool and a pulley vehicle, which is characterized in that: the elevated working platform includes a guide pillar; an upper end of an intermediate screw rod is provided with a sleeve gasket and a cone roller bearing and a lower end of the intermediate screw rod is provided with a bearing; a pair of meshed bevel gears are connected with the screw rod, wherein, a gear shaft on which the cone roller bearing is arranged is driven by a cranking bar; a big nut completing an elevated motion is arranged on a moving beam via a screw; the internal-swelling lifting tool includes a long screw rod on which two sections of thread and the matched nut are respectively arranged; eachnut is connected with a support ring via a connecting rod; one end of the long screw rod is connected with the moving beam via a coupling and the other end of the long screw rod is connected with a hanging cap; the coupling and the moving beam form a hinge via a shaft. Four universal wheels are arranged on a V-shaped block to form the pulley vehicle which conducts reciprocating linear motion on afixed guide rail. The generator assembly process has the advantages of simple and compact structure, good self-locking function, simple operation as well as high efficiency and working stability and safety improvement.

Description

technical field [0001] The invention relates to a generator assembly process, in particular to a special lifting tool for stator casing assembly. Background technique [0002] The stator is one of the key parts of the generator, and its assembly quality directly affects the overall performance and service life of the generator. According to the generator model, the stator of the generator must be pressed into the specified position in the frame from the driving end or non-driving end of the frame. The position where the end and the sliding bearing bush form a correct gap is also the position of the magnetic centerline of the stator and rotor. If the assembly is not good, the heat dissipation performance of the motor will be reduced, the capacity of the motor will be reduced, the wear of the sliding bearing will be increased or even burned, and the voltage output quality of the motor will be affected at the same time. The most difficult link in the press-fitting process is ...

AI Technical Summary

Problems solved by technology

This kind of lifting method is cumbersome, and sometimes it cannot be safely hoisted into the hole of the machine base due to the size and structure of the machine base. The operation is cumbersome and the controllability is poor. The efficiency is low, the press-fit quality is difficult to control, and the stators with different outer diameters require different inner diameter hoops, which increases the cost and labor intensity

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