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Helical bevel gear meshing system vibration characteristic analysis method and system

A technology of bevel gears and vibration characteristics, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve the problems of inability to reflect, rough calculation, and inability to reflect the influence of the critical speed of gear system parameters, etc., and achieve accurate and stable results , the effect of fast calculation speed

Pending Publication Date: 2022-02-08
泰安航天特种车有限公司
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing vibration analysis of the gear meshing system is still limited to finite element modal analysis and statistical energy estimation in the frequency domain through Fourier transform, and the calculation is rough using the finite element method or Fourier transform method, which cannot reflect the influence of gear system parameters on the critical speed , cannot guide the design
[0004] The safe working area of ​​a gear transmission system with a complex structure is limited and regular in the entire angular frequency domain. Existing methods cannot quantitatively analyze and divide it, and cannot easily change gear parameters. For various forms of gears Combination research and comparison, the vibration characteristics of the gear meshing system can be analyzed in detail in the research and development stage before mass production, and used to guide the optimal design
[0005] The finite element method is a static calculation, which reflects the static vibration characteristics of the system, and cannot reflect the vibration characteristics of the entire system caused by the rotational speed. The Fourier transform estimation method based on statistical energy spectrum analysis is used, which focuses on the calculation results to prove Effectiveness of improvement measures, but cannot reflect the specific effects of changes in various parameters

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  • Helical bevel gear meshing system vibration characteristic analysis method and system
  • Helical bevel gear meshing system vibration characteristic analysis method and system
  • Helical bevel gear meshing system vibration characteristic analysis method and system

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Embodiment 1

[0057] Such as figure 1 As shown, this embodiment discloses a method for analyzing vibration characteristics of a helical bevel gear meshing system, which includes the following steps:

[0058] Step 1: Obtain the system parameters of the orthogonal helical bevel gear pair;

[0059] The gear system parameters include: gear mass, moment of inertia, polar moment, pitch radius, tooth stiffness, pressure angle, helix angle, sub-cone angle, shaft length, shaft diameter, shaft section moment of inertia, Young's modulus of elasticity amount, bearing stiffness.

[0060] The parameters include the generalized force and displacement vector of the orthogonal helical bevel gear pair, the generalized force includes shear force, bending moment, and torque, and the displacement includes the relative displacement of the shaft center, deflection angle, torsion angle, etc.

[0061] In this embodiment, the positive direction of shear force and bending moment is different from the provisions of ...

Embodiment 2

[0131] This embodiment provides a vibration characteristic analysis system of a helical bevel gear meshing system, including:

[0132] A system parameter acquisition module, which is configured to: acquire the system parameters of the orthogonal helical bevel gear pair;

[0133] The vibration force calculation module is configured to: obtain the meshing vibration force between gears according to the system parameters of the orthogonal helical bevel gear pair;

[0134] a vibration force decomposition module configured to: calculate the influence matrix of the meshing gear pair by decomposing the meshing vibration force between gears in combination with shear force, bending moment and torque balance equations;

[0135] According to the mechanical characteristics of the shaft section, the influence matrix of the shaft section is obtained by establishing the relational expressions of the state parameters at both ends of the shaft section;

[0136] The dynamic equation building bl...

Embodiment 3

[0139] The implementation mode of this specification provides a computer device, including a memory, a processor, and a computer program stored on the memory and operable on the processor. When the processor executes the program, a helical gear in the first embodiment is realized. Steps in a method for analyzing vibration characteristics of bevel gear meshing systems.

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Abstract

The invention discloses a helical bevel gear meshing system vibration characteristic analysis method and system. The method comprises the following steps: acquiring system parameters of an orthogonal helical bevel gear pair; obtaining the meshing vibration force between the gears according to the system parameters of the orthogonal helical bevel gear pair; calculating an influence matrix of a meshing gear pair by decomposing meshing vibration force between gears in combination with shear force, bending moment and a torque balance equation; establishing a relational expression of state vectors at two ends of the shaft section according to mechanical characteristics of the shaft section to obtain an influence matrix of the shaft section; sequentially multiplying the influence matrix of the shaft section by the influence matrix of the meshing gear pair, and establishing a kinetic equation of the whole system; and solving the kinetic equation to obtain all critical rotating speeds in the working rotating speed range of the gear system, and solving the vibration mode corresponding to the critical rotating speed of the gear transmission system by utilizing the critical rotating speed of the gear transmission system.

Description

technical field [0001] The invention belongs to the field of nonlinear vibration analysis of gears, and in particular relates to a vibration characteristic analysis method and system of a helical bevel gear meshing system. Background technique [0002] The statements in this section merely provide background information related to the present disclosure and do not necessarily constitute prior art. [0003] The orthogonal bevel gear is the main direction-changing transmission device, and the vehicle final drive is a typical bevel gear meshing system, which is the main component of the drive train and the main vibration source of the vehicle. The existing vibration analysis of the gear meshing system is still limited to finite element modal analysis and statistical energy estimation in the frequency domain through Fourier transform, and the calculation is rough using the finite element method or Fourier transform method, which cannot reflect the influence of gear system parame...

Claims

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Application Information

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IPC IPC(8): G06F30/20G06F119/14
CPCG06F30/20G06F2119/14
Inventor 王新博张平刘庆刘双燕赵文明王迪姜艳玲殷永聪张玉玺李青岳莹莹徐付蕾尤迪
Owner 泰安航天特种车有限公司
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