Safe and reliable platform for core-pulling assembly and maintenance of medium and large-sized motors

Abstract

The invention discloses a safe and reliable platform for core-pulling assembly and maintenance of medium and large-sized motors, which comprises a platform base, and is characterized by further comprising a workpiece turntable pulley, a supporting shaft pulley, a supporting shaft bracket and a lengthened dummy shaft connected with a motor rotor, sliding rails are arranged on the platform base, andsliding plates matched with the sliding rails are arranged at the bottoms of the workpiece rotating disc tackle and the supporting shaft tackle. The middle part of the supporting shaft tackle is provided with a lifting platform, the upper part of the supporting shaft tackle is provided with a roller for supporting a shaft; the supporting shaft bracket comprises a fixed supporting shaft bracket and a movable supporting shaft bracket, the bottom of the fixed supporting shaft bracket is fixedly connected with the sliding guide rail, and a rotatable supporting roller is arranged at the upper partof the fixed supporting shaft bracket; sliding plates matched with the sliding guide rails are arranged at the bottoms of the movable carrier roller supports, and carrier rollers are arranged above the movable carrier roller supports. According to the invention, semi-automation, safety and controllability are realized as much as possible in the core pulling and mounting process of medium and large motors, the risk of secondary damage of the motors in the core pulling and mounting process is avoided, and the purposes of improving the assembly and maintenance quality, reducing the cost and increasing the efficiency are achieved.

Description

technical field [0001] The invention relates to a safe and reliable core-pulling assembly and maintenance platform for medium and large motors, belonging to the technical field of large motor assembly and maintenance. Background technique [0002] When the medium and large motors are assembled in the factory and overhauled by the user, the rotor needs to be installed or pulled out of the stator. For motors of different specifications, the weight of the rotor and stator is usually between several tons or hundreds of tons, so the work of pumping and installing the core is intensive and requires careful attention. When the components of the medium and large motors are assembled after they are manufactured, and when they are overhauled at the user's base, it is necessary to put the rotor weighing several tons or tens of tons into the stator cavity or pull it out from the stator cavity. For motor rotor core pulling and core loading, there are basically two traditional methods, s...

AI Technical Summary

Problems solved by technology

The second method is more demanding for operations involving the synchronicity of hoisting machinery

[0008] ① The stator of medium and large motors is usually in the form of a non-detachable whole. The pumping and core loading of the motor must be completed by using the "dummy shaft" for extension to pass through the stator. Therefore, it is difficult to design and implement tooling with a slightly higher degree of automation.

[0009] ② The use points of medium and large motors are scattered, the quantity is limited, and the frequency of core-pulling major repairs is not high, so retail investors are reluctant to invest in higher-cost tooling

[0010] ③Medium and large motors have heavy overall mass, long longitudinal distance, and small air gap (usually about 2mm). For example, designing tooling with a certain transmission accuracy and motorized configuration requires a large investment. Generally, retail investors who use medium and large motors are not very interested

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