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Test method for uniform-load coefficients of double-row planetary gear transmission based on complex modal analysis

A double-row planetary and gear transmission technology, which is applied in the testing of mechanical components, testing of machine/structural components, instruments, etc., can solve the problems of complex structure of the test bench, increase of test cost, complicated installation process, etc., and shorten the test cycle , Reduce test cost, and easily change parameters

Active Publication Date: 2019-01-04
CHONGQING UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The process is complicated and time-consuming, and the installation process is cumbersome. If a problem with the strain gauge is found during the test, it is usually necessary to disassemble and reattach the strain gauge, and then reinstall the test bench
[0004] To sum up, the structure of the test bench used in the existing load sharing coefficient test method for double-row planetary gear transmission is relatively complicated, the test cost is high, and it needs to be installed after manual placement. If the strain gauge fails during the process, the test bench needs to be disassembled and re-mounted for testing, which increases the cost of the test

Method used

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  • Test method for uniform-load coefficients of double-row planetary gear transmission based on complex modal analysis
  • Test method for uniform-load coefficients of double-row planetary gear transmission based on complex modal analysis
  • Test method for uniform-load coefficients of double-row planetary gear transmission based on complex modal analysis

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Embodiment Construction

[0020] Below in conjunction with accompanying drawing and embodiment the present invention will be further described:

[0021] For ease of description, the following symbols are specified in this manual:

[0022] Such as figure 1 As shown, the double-row planetary gear is composed of two independent planetary gear trains, and the output shaft of the first-stage planet carrier is connected with the input shaft of the second-stage sun gear. figure 1 is a structural diagram of a wind power gearbox, Blade is the blade, c_1 is the first-stage planetary planetary carrier, s_1 is the first-stage planetary-stage sun gear, p_1 is the first-stage planetary-stage planetary gear (5 planetary gears : p5_1, p4_1, p3_1, p2_1 and p1_1), r_1 is the first stage ring gear. c_2 is the second-stage planetary planet carrier, s_2 is the second-stage planetary sun gear, p_2 is the second-stage planetary planetary gear (3 planetary gears: p3_2, p2_2 and p1_2), r_2 is the second-stage ring gear. w_...

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Abstract

The invention discloses a test method for uniform-load coefficients of double-row star gear transmission based on complex modal analysis. The method comprises following steps: 1, testing the quality and natural frequency of each component; 2, carrying out theoretical modeling on a double-row planetary gearbox; 3, carrying out complex modal analysis on the double-row planetary star gear system to obtain the vibration mode and the natural frequency of the gearbox system; the key equations which relate the modal characteristics and uniform-load behavior of planetary gears are obtained; 4, inputting the component mass, the natural frequency and the modal parameters into a solution formula of the uniform-load coefficients to obtain the uniform-load coefficient of the system. The invention has the advantages that: 1, the invention adopts mathematical modeling, does not need to install a test bench, and reduces the test cost; 2, the method of the invention avoids the test bench from being disassembled and reinstalled due to the error in the test bench installation process, and shortens the test cycle, improving test efficiency.

Description

technical field [0001] The invention belongs to the technical field of gear transmission test, and in particular relates to a test method for load sharing coefficient of double-row planetary gear transmission. Background technique [0002] At present, the method of testing the load sharing factor of planetary gear transmission is to build a test bench, which can be divided into open test bench and closed power flow test bench according to the power circulation mode. The open test bench has a simple structure and low investment and maintenance costs, but the test cost is relatively high because the energy cannot be fed back and recovered during the test. The energy of the closed power flow test bench can be fed back, recovered and reused, and a large amount of electric energy can be saved in the test project. It is the main method of load sharing factor testing at present, but its structure is relatively complicated and the maintenance cost is high. [0003] When testing the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M13/021
CPCG01M13/021
Inventor 孙秋云朱才朝樊志鑫
Owner CHONGQING UNIV
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