Rotor variable-mass frequency-modulation dynamic vibration absorber of rotating machinery

A technology of dynamic vibration absorber and rotating machinery, which is applied in the direction of rotation vibration suppression, mechanical equipment, vibration suppression adjustment, etc. It can solve the problem that the vibration absorber cannot be adjusted and changed in a wide range of frequencies, and achieves good vibration reduction effect and high reliability. , the effect of strong stability

Active Publication Date: 2014-01-15
BEIJING UNIV OF CHEM TECH
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Problems solved by technology

However, it is limited by the size of the mass cavity and the range of frequency modulation. As mentioned above, the basic rotor changes from the first-order critical speed frequency of 81.7Hz to the stable operating speed frequency of 180Hz, and the mass needs to be changed by 4.85 times.
If the diameter of

Method used

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  • Rotor variable-mass frequency-modulation dynamic vibration absorber of rotating machinery
  • Rotor variable-mass frequency-modulation dynamic vibration absorber of rotating machinery
  • Rotor variable-mass frequency-modulation dynamic vibration absorber of rotating machinery

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Embodiment Construction

[0031] The present invention will be further described below in conjunction with the accompanying drawings.

[0032] Such as figure 2 Shown is a schematic structural diagram of the present invention in the rotor system, image 3 It is a structural schematic diagram of the variable mass frequency modulation dynamic vibration absorber of the present invention, Figure 4It is a schematic diagram of the control system of the variable mass frequency modulation dynamic vibration absorber of the present invention, the vibration absorber includes a rotating shaft 1, a shaft sleeve 2, a rolling bearing 3, a spring set 4, annular mass disks 5a, 5b, 5c, 5d, an adsorption device 6, and a release device 7 , relay switch 8, laser velocimeter 9, eddy current displacement sensor 10, vibration signal 11, terminal block 12, signal conditioning module 13, data acquisition card 14, computer 15, control signal 16, rotor system support 17, coupling 18 , motor 19, soft connection 20; the vibratio...

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Abstract

The invention relates to a rotor variable-mass frequency-modulation dynamic vibration absorber of rotating machinery. The vibration absorber is formed by a connection transmission mechanism, a mass regulating mechanism and a control system. A rotating machinery rotor produces vibration in the work. The rotor variable-mass frequency-modulation dynamic vibration absorber is installed at the proper position of the rotor. The connection transmission mechanism installed on the rotor transmits vibration energy produced by the rotor to the mass regulating mechanism; the mass regulating mechanism keeps consistent in frequency with a rotor main system under the adjustment of the control system to cause resonance; an annular mass plate produces a dynamic response and counteracts the dynamic response on the rotor main system, so that the effects of offsetting and suppressing rotor vibration are achieved. The rotor variable-mass frequency-modulation dynamic vibration absorber is unique in structure, high in reliability, stable in performance, low in maintenance frequency, flexible in installing position and good in adaptability; besides, the control system is excellent, and active control is easy to achieve.

Description

technical field [0001] The invention belongs to a rotor dynamic vibration absorber used in a rotary machine, relates to the field of mechanical rotor vibration control, in particular to a variable mass frequency modulation dynamic vibration absorber for a rotary machine rotor. Background technique [0002] The vibration of the rotor system is a key issue that restricts the safe and reliable operation of rotating machinery. In the study of rotating machinery, it is of great significance for how to improve the life of the rotor and ensure the safe and stable operation of mechanical equipment by reducing the vibration of the rotor system. A tuned mass damper (TMD) is a dynamic vibration absorber with simple structure and stable performance. In view of its advantages in engineering applications such as easy realization, it is widely used in building structures, roads and bridges, vehicles (ships, aircraft, automobiles), industrial It is widely used in many fields such as machine...

Claims

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Application Information

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IPC IPC(8): F16F15/14F16F15/121
Inventor 何立东张震坤张炳康黄秀金王晨阳王锎高金吉
Owner BEIJING UNIV OF CHEM TECH
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