Rub-impact damping protection device for high-speed rotating machinery

Abstract

The invention discloses a rub-impact damping protection device for a high-speed rotating machinery, comprising an upper cover plate, a lower cover plate, a housing, a slide block, a rub-impact ball head and a metal rubber ring, wherein both the housing and the slide block are ring-shaped; an upper through hole is arranged at the middle part of the upper cover plate; a lower through hole is arranged at the middle part of the lower cover plate; the upper end of the housing is fixedly connected with the upper cover plate; the lower end of the housing is fixedly connected with the lower cover plate; the slide block is arranged in the housing and is embed between the upper cover plate and the lower cover plate; a gap is reserved between the slide block and the housing; the metal rubber ring is placed in the gap; the rub-impact ball head is arranged on the inner wall of the slide block; the head part of the rub-impact ball head is toward the axis of the slide block; and the distance from the head part of the rub-impact ball head to the axis is respectively less than the radius of the upper through hole and the radius of the lower through hole. When playing a limit role on the rotation of a rotor, the rub-impact damping protection device with the structure also has a performance of strong damping effect and is beneficial to enhancing the safety of the operation of a rotor system.

Description

technical field [0001] The invention belongs to the technical field of mechanical parts, and in particular relates to a rubbing and damping protection device for high-speed rotating machinery. Background technique [0002] In recent years, with the rapid development of the nuclear industry, aviation industry, electric power industry, shipbuilding industry, petrochemical and other fields, various rotating machinery, such as centrifuges, turbines, and energy storage flywheels, are developing in the direction of high speed and high power-to-weight ratio. . During the operation of the rotor system, when the rotor is affected by external excitation, the vibration of the rotor exceeds the standard or the phenomenon of motion instability occurs from time to time. If it is not controlled, it will easily cause catastrophic accidents. At present, in order to avoid excessive vibration of the rotor or unstable movement, one method adopted is to introduce a friction protection device in...

AI Technical Summary

Problems solved by technology

Due to the lack of damping elements in the limit sleeve, the rotor is not easy to return to the equilibrium position quickly

In addition, the life of the friction ring on the limit sleeve is short; the other type is a rolling friction protection device: this device is a commonly used rolling bearing

Rolling bearings can play a limiting role and can solve the wear problem, but due to the weak damping effect, the effect on frictional vibration reduction is very limited

Images