Testing device for implementing main torque and vibrating torque to high speed rotary main shaft

Abstract

The invention discloses an intensity test device which enables the main torque and the vibration torque of a high-speed rotary spindle to be loaded; the test device mainly structurally comprises a device rack, a main torsion beam and a reverse torsion beam which are fixedly connected with the rotary spindle arranged on the rack, at least a pair of main torsional actuating cylinder mechanisms withthe bearing end fixed on the device rack and the action force of the mobile end twisted with the torsion beams forming the main torsional couple, at least a pair of vibration actuating cylinder mechanisms with the action force forming the vibration torsional couple, at least a pair of elastic reverse torsional actuating mechanisms with the reverse action force forming the reverse torsional couple, as well as a hydraulic servo system which controls the movement of the actuating cylinder mechanisms. The invention breaks through the torque load mode of the high-speed rotary spindle test device in the prior art and can completely and really simulate the main torque and vibration torque load borne by the high-speed rotary spindle during the running process so as to solve the problem of difficult composite load of the main torque and the vibration torque. The invention also has the advantages of high load accuracy, low manufacturing cost, small maintenance workload and long service life.

Description

technical field [0001] The invention relates to a strength test device for a high-speed rotary spindle, in particular to a strength test device capable of simultaneously implementing main torque and vibration torque loads on a high-speed rotary spindle to determine the life of the rotary shaft. Background technique [0002] The rotary spindle of high-speed rotary machinery such as turbine engine and steam turbine is the most important part of this type of machinery, and it bears various loads during operation. image 3 As shown, it must bear loads such as bending moment Mu, main torque Mk, vibration torque △Mk, axial force P, etc., and because there are many stress-concentrated parts such as steps and holes that are prone to cracks, once cracks occur during operation Fatal shaft breaking consequences may occur, causing personal injury and fatal accidents and heavy property losses. Since the gyro moment and maneuvering moment during the operation of the turbine shaft cannot b...

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a test device that can simultaneously implement main torque and vibration torque loads on a high-speed rotary spindle in view of the shortcomings of the existing high-speed rotary spindle strength test device, and aims to solve the problem that the prior art test device cannot be well and effectively The problem of compound loading of the main torque and vibration torque on the high-speed rotary spindle cannot be well and effectively simulated at the same time the main torque load and the vibration torque load on the high-speed rotary spindle during operation. Problems such as high cost and high failure rate

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