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International Standard Serial Number:
ISSN 1001-4551
Sponsor:
Zhejiang University;
Zhejiang Machinery and Electrical Group
Edited by:
Editorial of Journal of Mechanical & Electrical Engineering
Chief Editor:
ZHAO Qun
Vice Chief Editor:
TANG ren-zhong,
LUO Xiang-yang
Tel:
86-571-87041360,87239525
Fax:
86-571-87239571
Add:
No.9 Gaoguannong,Daxue Road,Hangzhou,China
P.C:
310009
E-mail:
meem_contribute@163.com
Abstract: To solve the problems of insufficient stiffness, large vibration and easy side overturning of traditional stacker in operation, a new stacker was designed. The contact force of V-shaped roller and the contact stiffness of guide rail in the traveling mechanism of stacker were analyzed.Firstly, the working principle of the stacker was proposed, and the structural design of each part was analyzed in detail. A V-type roller layout was proposed, and its structural characteristics were analyzed.Then,according to the mechanical model of the walking mechanism of the stacker, the contact force of the V-type roller was analyzed.The calculation methods for the contact stiffness and contact life of V-type roller and guide rail were given, and an example was given.Finally, the finite element method was used to conduct static analysis on the whole machine, and the contact force and contact deformation of the V-type roller were solved, so as to solve the contact stiffness of the V-type guide rail,and the calculation results of finite element method and theoretical solution method were compared.The simulation results show that the theoretical calculation service life of the stacker roller is 5192 km, and the theoretical calculation service life of the guide rail is 1.9×105 km. The theoretical and simulation contact stiffness under the initial state is 7.92×105 N/mm and 7.55×105 N/mm. The theoretical and simulated contact stiffness under limit state is 8.14×105 N/mm and 7.86×105 N/mm. The research results show that,the stacker has a high service life, and the two contact stiffness values obtained from theoretical model calculation and simulation analysis are very close. The theoretical model can be used as a fast calculation method applicable to engineering, when dealing with the force and stiffness analysis of V-type roller contact mode.
Key words: loading and unloading machinery; stacking equipment; lateral overturn; contact stiffness; contact life; contact deformation; static analysis
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