基于接触的轨道运输车升降系统传动结构稳定性分析

doi:10.16180/j.cnki.issn1007-7820.2021.02.008

摘要/Abstract

摘要：

轨道运输车属有轨输送设备,广泛应用于铁路、冶金、矿山等领域,其传动结构的稳定性是生产中亟待解决的关键问题。文中以轨道运输车升降系统传动结构为研究对象,基于多体动力学理论及Hertz接触理论,研究了轨道运输车升降传动结构中蜗轮蜗杆的啮合过程。文中还对刚度系数、电机驱动速度及传动距离对传动稳定性影响进行分析,探寻蜗轮蜗杆之间接触力变化规律,找到了影响升降结构稳定性的原因。通过对传动结构中蜗轮蜗杆传动机构的接触力变化规律进行研究,发现接触时瞬时冲击及接触力的周期性波动是造成升降系统传动结构不稳定的主要原因。文中工作对蜗轮蜗杆传动的动力学特性研究及轨道运输车新型传动结构的设计提供了理论依据。

关键词: 轨道运输车, 升降系统, 蜗轮蜗杆传动, 稳定性分析, Hertz接触理论, 接触力

Abstract:

Rail transport conveyor is a kind of rail transport equipment, which is widely used in railway, metallurgy, mining and other fields. However, the stability of its transmission structure is an urgent problem to be solved in production. In this study, the transmission structure of the lifting subsystem of rail transport conveyor has been taken as the research object. Based on the multi-body dynamics theory and Hertz contact theory, the meshing process of the worm gear and worm in the lifting transmission structure of rail transport conveyor are studied. Additionally, the influence of stiffness coefficient, motor driving speed and transmission distance on the stability of transmission are analyzed. Then, the variation law of contact force between the worm gear and the worm is explored, so as to find out the reasons of affecting the stability of lifting structure. Through the research on the change law of the contact force of the worm gear and worm transmission mechanism in the transmission structure, it is found that the instantaneous impact of contact and the periodic fluctuation of contact force are the main reasons for the instability of the transmission structure of the lifting subsystem. The research work in this paper provids a theoretical basis for both the study of the dynamic characteristics of the worm gear and worm transmission and the design of the new transmission structure of rail transport conveyor.

Key words: rail transport conveyor, lifting system, worm gear and worm driving, stability analysis, Hertz contact theory, contact force

中图分类号:

TP242.3

普江华,王学军,吴鹏,陈明方,杨雄. 基于接触的轨道运输车升降系统传动结构稳定性分析[J]. 电子科技, 2021, 34(2): 45-51.

PU Jianghua,WANG Xuejun,WU Peng,CHEN Mingfang,YANG Xiong. Stability Analysis of Transmission Structure of Rail Transport Conveyor Lifting Subsystem Based on Contact[J]. Electronic Science and Technology, 2021, 34(2): 45-51.

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