Crash dampers for high-speed rotating machinery

Abstract

The invention belongs to the technical field of mechanical vibration control, and in particular relates to a collision damper for high-speed rotating machinery, comprising a bearing seat, a support shaft, a combination of several large collision balls and several small collision bodies, and the inner ring of the bearing on the bearing seat It is fixedly connected with the rotating shaft, one end of the support shaft is fixedly connected with the bearing seat, and the other end is fixed on the housing, and a long groove is opened on the bearing seat, and the long groove is distributed along the radial direction of the rotating shaft, and the large The collision balls are sequentially arranged in the long groove, and the top of the long groove is slidably provided with a slide rail cover plate. The small collision body combination includes a connecting section and a first small collision ball fixedly arranged at the bottom end of the connecting section. The segment is slidably connected with the cover plate of the slide rail, the first small collision ball is located in the long groove, several large collision balls and the first small collision ball are arranged at intervals, and the centers of the balls are located on the same horizontal plane.

Description

technical field [0001] The invention belongs to the technical field of mechanical vibration control, in particular to a collision damper for high-speed rotating machinery. Background technique [0002] In order to ensure the stable and efficient operation of the shaft system, in various high-speed rotating machines such as centrifuges, turbines, and energy storage flywheels, in order to ensure the stable operation of the rotor-bearing system, it is also necessary to introduce damping devices into the shaft system. [0003] The most common damper is squeeze oil film damper, although the price is cheap, due to the use of lubricating oil, the working environment is poor and not environmentally friendly; the electromagnetic damper requires an external power supply and control system; the new magnetic damper requires The use of permanent magnets requires professional manufacturers to customize, and the cost is high. Contents of the invention [0004] In order to solve the oil ...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the oil film damper used to ensure the stable and efficient operation of the shaft system in the prior art, the working environment is poor and not environmentally friendly due to the use of lubricating oil; the electromagnetic damper requires an external power supply and control system, and the connection is complicated; The new type of magnetic damper requires the use of permanent magnets, which need to be customized by professional manufacturers, and the problem of high cost. The present invention provides a collision damper for high-speed rotating machinery, which uses a large collision ball and the first small collision ball The damper has the outstanding advantages of no active control, environmental friendliness, low cost, and easy maintenance and installation.

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