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A Vertical Rotor Tester With Adjustable Asymmetric Support Stiffness

A technology with support stiffness and asymmetry, used in the testing of mechanical components, the testing of machine/structural components, instruments, etc., can solve the problems of unable to achieve symmetrical to asymmetrical support stiffness, asymmetric support stiffness, etc., and achieve rich modalities. Characteristics, small bearing stiffness, effect of simple structure

Active Publication Date: 2022-07-01
BEIHANG UNIV
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Problems solved by technology

[0003] The technical solution of the present invention is to overcome the deficiencies of the prior art and provide a vertical rotor tester with adjustable support stiffness asymmetry, which overcomes the difficulty of avoiding the double frequency excitation and the double frequency excitation of the rotor by gravity in the conventional horizontal rotor tester. The support rigidity is too large, and it is impossible to realize the defects of the support stiffness from symmetry to asymmetry and the transformation of different asymmetry degrees, and to avoid the shortcomings of the existing vertical rotor tester support frame with additional support stiffness asymmetry

Method used

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  • A Vertical Rotor Tester With Adjustable Asymmetric Support Stiffness
  • A Vertical Rotor Tester With Adjustable Asymmetric Support Stiffness
  • A Vertical Rotor Tester With Adjustable Asymmetric Support Stiffness

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Embodiment Construction

[0017] The present disclosure will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the related content, but not to limit the present disclosure. In addition, it should be noted that, for the convenience of description, only the parts related to the present disclosure are shown in the drawings.

[0018] It should be noted that the embodiments of the present disclosure and the features of the embodiments may be combined with each other unless there is conflict. The present disclosure will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

[0019] see attached Figure 1-Figure 3 , a vertical rotor tester with adjustable support stiffness asymmetric degree of the present invention includes a short angle steel 1, a motor 2, a connecting block 3, a rotor support plate 4, a...

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Abstract

The invention discloses a vertical rotor tester with adjustable degree of support stiffness asymmetry. , The magnitude of the support stiffness is small and the degree of asymmetry is adjustable; the support frame structure composed of angle steel, connecting block, motor support plate and rotor support plate is used to install the elastic support structure and install the tester as a whole on the assembly platform; The vertical rotor structure is installed in the elastic support structure through bearings.

Description

technical field [0001] The invention belongs to the field of rotor system testing, in particular to a vertical rotor tester with adjustable degree of asymmetric support stiffness. Background technique [0002] Asymmetric rotors with support stiffness exist in a large number in industrial practice, such as aero-engines, ground gas turbines and rotors with support failures. The asymmetry of the support stiffness will increase the critical speed of the rotor system, increase the dangerous speed range, and even appear in the state of reverse precession and whirl, which threatens the safe operation of the rotor. In order to avoid the damage to the rotor system caused by the asymmetry of support stiffness and provide theoretical guidance for the design of rotor dynamics, it is necessary to carry out research on the vibration characteristics of the rotor system with asymmetric support stiffness. Existing test systems for asymmetric rotors with support stiffness, such as the rotor ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M13/00
CPCG01M13/00
Inventor 张大义曾振坤李继世杨诚
Owner BEIHANG UNIV
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