A transmission connection device between a cantilever impeller and a transmission shaft

Abstract

A transmission connection device between a cantilever impeller and a transmission shaft, mainly including 3-10 concave grooves uniformly distributed along its circumference on the end surface of the impeller hub, and 3-10 convex grooves uniformly distributed along its circumference on the end surface of the shaft head of the transmission shaft The concave groove on the end surface of the impeller hub and the convex platform on the end surface of the drive shaft head are plugged in and axially fixed by tension bolts and compression nuts. When the transmission shaft rotates, the torque of the transmission shaft is transmitted to the impeller through the force-giving surface of the upper convex platform, so that the impeller rotates and performs work. It has the characteristics of simple structure, small axial size, high reliability, low processing cost, low requirements on processing equipment, small axial pressing force required, easy disassembly, etc., and can be widely used in high-speed, high-power impellers and transmissions. Shaft face drive connection.

Description

technical field [0001] The invention relates to a transmission connection device for an impeller and a shaft in the technical field of general machinery, in particular to a transmission connection device for a cantilever impeller and a transmission shaft, which is suitable for centrifugal compressors, centrifugal blowers and centrifugal superchargers Transmission connection between impeller and shaft in high-speed and high-power rotating machinery such as , turbo expander, etc. Background technique [0002] In turbomachinery, the power consumption of the impeller is provided by the drive shaft, usually the impeller is set on the drive shaft, and the two are connected by a key, with key interference connection, keyless interference connection, cone surface friction plus axial Pin connection, polygonal shaft connection, spline connection, flange connection, radial face pin connection, end face spline tooth connection, etc. Among them, the key connection is only suitable for l...

AI Technical Summary

Problems solved by technology

Among them, the key connection is only suitable for low-speed use due to the gap between the impeller and the shaft; the keyed and keyless interference connection, the impeller cannot be disassembled, and sometimes the shaft is easily broken due to the large interference; the end spline tooth connection The connection with the polygonal shaft is relatively good, but it requires expensive special processing equipment, and the processing is difficult; the conical surface friction plus axial pin connection and the radial surface end pin connection, because the impeller and the shaft are riding seam pins, the pin holes are on both sides. Between the two parts, especially to ensure that the radial pin does not fly out when the impeller rotates at high speed, the fixing of the radial pin becomes the key to the success of the connection, and the structure and process are relatively complicated; spline connection and flange Connecting shafts suitable for different structures, the application range is limited

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