Quick connection construction method for large coupling

Abstract

The invention discloses a quick connection construction method for a large coupling. The quick connection construction method comprises the following steps: (1) bolt hole centering; (2) bolt elongation measurement; and (3) bolt fastening construction, specifically, bolt centering adopts cooperative construction of a split pin bush, an expansion pin, a pull rod, a sleeve and a hollow hydraulic jack; and bolt elongation measurement adopts cooperative construction of a measuring rod and a dial indicator. According to the method, the construction precision is very high, the concentricity of two screw holes can be smaller than or equal to 0.01 mm, and the method is convenient to implement, rapid and efficient and is very suitable for recovery after steam turbine rotors and generator rotor couplings are overhauled.

Description

Technical field: [0001] The invention relates to a quick connection method of a shaft coupling of a large-scale mechanical equipment, in particular to a construction method for a quick connection of a large-scale shaft coupling, and belongs to the technical field of quick connection of a shaft system of a large-scale mechanical equipment. Background technique: [0002] The shafting system consists of multiple couplings, which are also called opposite wheels. In the maintenance of steam turbine generators in thermal power plants, the connection quality of the turbine generator coupling is the most critical factor affecting the vibration of the unit, and it is also a construction link that takes a long time and has the highest quality requirements. The connection quality of the shaft directly affects the vibration index of the turbogenerator. The country has always advocated the protection of national energy stability, so it is necessary to ensure the smooth completion of the...

AI Technical Summary

Problems solved by technology

When the coupling is connected, the centering of the bolts has always been a difficult problem in the construction. When the bolt holes of the traditional coupling are centered, the matching gap between the bolt holes and the bolts of the opposite wheel is only 0.025mm ~ 0.055mm, so the two opposite wheels If the deviation of the bolt hole is greater than 0.02mm, the bolt cannot be inserted smoothly. The construction of this traditional craft relies heavily on the construction experience of skilled workers

[0004] The traditional method of fastening bolts for coupling bolts is the factory-supplied wrench + sleeve + multiple people to fasten the bolts together. This method takes a long time to construct, has high labor intensity, consumes too much physical strength, and the bolt tightening torque is not uniform, which is extremely difficult. It is easy to cause the shaking of the coupling to exceed the standard

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