Complete dynamic balancing tool for cantilever rotor

Abstract

The invention relates to a complete dynamic balancing tool for a cantilever rotor. The complete dynamic balancing tool for the cantilever rotor comprises a rotor bracket 1, a stator bracket 2 and a wind-powered ring 3, wherein the rotor bracket 1 is fixedly connected to a dynamic balancing machine; a cantilever rotor 4 to be dynamically balanced is mounted on the rotor bracket and can rotate around the axis of a cantilever rotor 1 body; the stator bracket 2 is fixed on a guide rail 5 of the dynamic balancing machine; a stator mounting structure is arranged on the stator bracket 2, and a stator part of a cantilever core machine is fixedly mounted on the stator bracket 2; the wind-powered ring 3 is also arranged on the stator bracket 2; an air channel 8 is arranged in the wind-powered ring 3. The tool is designed by simulating the actual mounting structure of the engine rotor; the novel wind-powered driving dynamic balancing technology is adopted; therefore, the influence of the irregular variation of the dynamic balancing quantity value caused by undetermined factors such as belt transmission and repeated dismounting and mounting can be removed; the whole rotor can be directly assembled without dismounting after the overall dynamic balance meets the design requirement, so that the use stability and reliability of the product can be improved.

Description

technical field [0001] The invention relates to a dynamic balancing tool, in particular to an overall dynamic balancing tool for a cantilever rotor, which is suitable for the overall dynamic balancing of an engine cantilever core machine rotor. Background technique [0002] A cantilever rotor is a component that is suspended at one end and rotates during work to generate or transmit power. Some cantilever rotors are in operation, because the cantilever part is long, the weight is heavy, and the rotational speed of the rotor is high, so the requirements for dynamic balance are also high. For example, in an aero-engine, the working state of its core rotor is a cantilever state, and the weight and length ratio of the cantilever is large. The lengths of the cantilever part and the support installation part of the largest core rotor are 203mm and 96mm, and the weight is 13.5Kg and 1.5mm. Kg, that is, the length ratio is about 2.1, and the weight ratio is about 9. The dynamic bal...

AI Technical Summary

Problems solved by technology

Dynamic balancing is carried out on the existing belt-driven dynamic balancing machine. Due to the elastic and unstable tension of the belt itself, the rotor operation is extremely unstable, resulting in poor dynamic balance stability and poor repeatability; and due to the limitation of the rotor structure of the core machine, there is no place for belt drive. , so the overall dynamic balance cannot be carried out. The rotating parts must be dynamically balanced first, and then disassembled and then assembled as a whole of the rotor after passing the test. During the installation process, there may be doubled and irregular dynamic balance values, which will cause multiple complete machines to vibrate and be unusable

[0003] In view of the fact that the rotor of the cantilever core machine cannot be overall dynamically balanced on the existing balancing machine, a method of replacing the existing belt drive by introducing a high-pressure air source to drive the rotor of the cantilever core machine is proposed. The problem of dynamic balancing of the rotor as a whole can also avoid the shortcomings of poor dynamic balance stability and poor repeatability caused by the elastic instability of the belt itself

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