Motor test spacer-bush-type coupling and dismounting method thereof

Abstract

The invention discloses a motor test spacer-bush-type coupling and a dismounting method thereof, wherein the coupling comprises an inner spacer bush (1) sleeved on a motor rotary shaft (7), a pressing ring (6), an outer shaft sleeve (2) sleeved on the inner spacer bush (1) and at least six M20 bolts (3); the excircle at the larger end of the inner spacer bush (1) is connected with a female end of the pressing ring (6); and each bolt is connected with the outer shaft sleeve (2) and the motor rotary shaft (7) through a spring washer (4), a flat washer (5) and bolt holes on the pressing ring (6). The dismounting method of the coupling comprises the mounting of the motor test spacer-bush-type coupling and the dismounting of the dismounting of the motor test spacer-bush-type coupling. The coupling provided by the invention has the advantages of simple structure, low cost, short time of dismounting, high production efficiency, and is safe and reliable in use; and after the coupling is used, the motor shaft extension and the inner spacer bush of the coupling can not cause the problems of dimension deformation and surface damage and the like, the motor shaft extension is not damaged, the service life of the inner spacer bush is prolonged, and the motor dynamic balance is not influenced and the like.

Description

technical field [0001] The invention relates to a motor test spacer type shaft coupling and a disassembly method thereof. Background technique [0002] The "coupling" test device is designed according to the shaft extension structure of the wind turbine generator, but the shaft extension of the wind turbine generator is different from other products. The type of shaft coupling can directly use the taper or keyway on the shaft extension of the generator, so that the test coupling can be reliably connected with the shaft extension of the steam generator, that is, the keyway is used to transmit the torque, so as to achieve the "coupling" test. However, the shaft extension of the wind turbine has no taper and no keyway. If the previous type of test coupling is used, it is impossible to ensure its connection with the shaft extension of the wind turbine, let alone the realization of torque transmission. Coupling" test purpose. In the conventional design scheme, the coupling used...

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Problems solved by technology

[0002] The "coupling" test device is designed according to the shaft extension structure of the wind turbine generator, but the shaft extension of the wind turbine generator is different from other products. The type of shaft coupling can directly use the taper or keyway on the shaft extension of the generator, so that the test coupling can be reliably connected with the shaft extension of the steam generator, that is, the keyway is used to transmit the torque, so as to achieve the "coupling" test. However, the shaft extension of the wind turbine has no taper and no keyway. If the previous type of test coupling is used, it is impossible to ensure its connection with the shaft extension of the wind turbine, let alone the realization of torque transmission. The purpose of the "coupling" test

In the conventional design scheme, the coupling used in the test adopts the method of heat sleeve, and the inner diameter of the coupling used in the test and the shaft extension of the wind turbine adopt an interference fit to transmit torque. A reasonable amount of interference is calculated, and the After the coupling is heated to a certain temperature, it is placed on the shaft extension of the wind turbine. After the test is completed, the coupling is heated and taken out. However, since the wind turbine is a product with a large demand, the test efficiency is too low. It cannot meet the production needs, and because the shaft extension of the wind turbine is thin and long, repeated heating and cooling will affect the mechanical properties of the shaft extension and have a negative impact on the product

The traditional coupling disassembly method has a low safety factor during disassembly, time-consuming and labor-intensive disassembly, great damage to the motor shaft extension after disassembly, and large damage to most of the fastening parts after disassembly, which cannot be reused, etc. shortcoming

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