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Method for evaluating reliability of straight gear transmission system

A transmission system and spur gear technology, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve problems such as complex relationships

Active Publication Date: 2015-12-09
NORTHEASTERN UNIV
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  • Abstract
  • Description
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Problems solved by technology

In addition, the relationship between the system and the constituent parts in the transmission system is also intricate

Method used

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Embodiment Construction

[0044] The specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0045] A gear is also a series system in the transmission process, because the failure of any tooth means the failure of the gear. Different from the chain system, each tooth in the gear system composed of multiple teeth does not bear the load at the same time, but carries the load successively with the evolution of time. It is a series system in four-dimensional space-time. The present invention calls such a system time-domain A tandem system can also be called an allosteric tandem system.

[0046] Traditionally, a chain under tensile load is defined as a typical series system. This paper calls such a series system as a simple series system, or an airspace series system, or a three-dimensional space series system. Its basic feature is that the spatial structure of the system and the functional logic relationship between the system and co...

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Abstract

The invention relates to a method for evaluating reliability of a straight gear transmission system. According to the method, the numbers of teeth of all gears, the static strength probability density functions of all the gears and the stress functions of all the pairs of meshing gears in the straight gear transmission system are acquired, the load spectrum of loads borne by the straight gear transmission system is obtained, and the probability density function of the stress amplitude of the load courses is obtained according to the load spectrum of the loads borne by the straight gear transmission system; the straight gear transmission system bearing the loads successively along with time evolution serves as a series system, namely, a time-domain series system in four-dimensional space-time, the reliability of all the pairs of meshing teeth is expanded to the reliability of the meshing gears, a reliability model of the meshing gears of the straight gear transmission system under the different load courses is established through a statistical averaging method, the reliability of all the pairs of meshing gears of the straight gear transmission system is calculated through the reliability model of the meshing gears of the straight gear transmission system under the different load courses according to the obtained load spectrum of the loads borne by the straight gear transmission system, and then the reliability of the straight gear transmission system is evaluated.

Description

technical field [0001] The invention belongs to the field of life evaluation of mechanical systems, and in particular relates to a reliability evaluation method of a spur gear transmission system. Background technique [0002] Gear transmission is the most widely used mechanical transmission method, and gear transmission systems are widely used in various mechanical equipment. However, regarding the particularity of the gear transmission system reliability problem, no dedicated method and specific model have been proposed yet. In traditional reliability research, when it comes to gears or gear transmission systems, the gears are simply regarded as a part, or the gears are regarded as an ordinary series system, which does not reflect the change of the composition of the gear transmission system with time at all. The system is a serial system at every fixed moment, but the parts involved in the work at different moments have different particularities. [0003] Regarding the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
Inventor 谢里阳白鑫
Owner NORTHEASTERN UNIV
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