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Vibration analysis and noise estimation method for coaxial dual-output planetary reducer

A planetary reducer, vibration analysis technology, used in instruments, special data processing applications, electrical digital data processing, etc.

Inactive Publication Date: 2017-05-31
HEILONGJIANG HENGNENG SELF CONTROL TECH CO LTD
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  • Abstract
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  • Application Information

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Problems solved by technology

[0004] In order to solve the above problems, the present invention proposes a vibration analysis and noise estimation method of a coaxial double-output planetary reducer, which shows that there will be no phenomenon that the natural frequency of the gearbox is in sync with the rotational frequency of the transmission shaft or the gear meshing frequency, and the structure noise The maxima all appear around the gear mesh frequency

Method used

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Embodiment Construction

[0013] A vibration analysis and noise estimation method of a coaxial double output planetary reducer, comprising the following steps:

[0014] The first step: Apply the self-developed three-dimensional dynamic contact finite element analysis program of gears to calculate the time-varying stiffness excitation, error excitation and meshing impact excitation of gear meshing;

[0015] The second step: use I-DEAS software to establish the finite element model of the coaxial double output planetary gear reducer;

[0016] The third step: conduct simulation analysis on the inherent characteristics of the reducer and the dynamic response and structural noise under the internal dynamic excitation.

[0017] Calculations show that the natural frequency of the gearbox does not coincide with the rotational frequency of the transmission shaft or the meshing frequency of the gears, and the maximum value of the structural noise appears near the meshing frequency of the gears.

[0018] The abo...

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Abstract

The invention discloses a vibration analysis and noise estimation method for a coaxial dual-output planetary reducer. The vibration analysis and noise estimation method comprises the following steps: firstly, calculating variable stiffness excitation, error excitation and meshing impact excitation during gear meshing by using a self-developed gear three-dimensional dynamic contact finite element analysis program; secondly, establishing a coaxial dual-output planetary reducer finite element model by using I-DEAS software; thirdly, performing a simulative analysis on inherent characteristics of the reducer as well as dynamic response and structural noises under internal dynamic excitation. By the vibration analysis and noise estimation method for the coaxial dual-output planetary reducer, the phenomenon that the inherent frequency of a gear box is in tune with the rotating frequency of a transmission shaft or the gear meshing frequency is avoided, and all maximum values of the structural noises appear nearby the gear meshing frequency.

Description

technical field [0001] The invention relates to a vibration analysis and noise estimation method of a reducer, in particular to a method for vibration analysis and noise estimation of a coaxial double-output planetary reducer, which belongs to the technical field of reduction products. Background technique [0002] The gear system will generate vibration and noise under dynamic excitation, which may sometimes affect the normal operation of the entire system. At present, a lot of research has been done on the dynamic load and vibration response analysis of the gear system; among them, based on the dynamic contact / impact problem finite element method, a two-dimensional parallel finite element solver was developed to analyze the impact load and dynamic stress of planetary gear transmission. For the 2K-H planetary gear transmission system with 5 planetary gears, a multi-degree-of-freedom dynamics model was established, and the differential equation of motion of the system was nu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
Inventor 焦国昌
Owner HEILONGJIANG HENGNENG SELF CONTROL TECH CO LTD
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