Connecting-rod dynamics of the primary drive in a cold-rolling mill

Rakhmanov, S. R.

doi:10.3103/s0967091216040124

Cited by 2 publications

(1 citation statement)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Different sources of parametrical excitation are investigated in rolling mills [18][19][20][21][22][23]. Although the nature of parametric vibration is a well-known and investigated phenomenon [24][25][26], this problem is remaining a challenge.…”

Section: Introductionmentioning

confidence: 99%

Dynamical processes in a multi-motor gear drive of heavy slabbing mill

Krot¹

2019

J. vibroeng.

View full text Add to dashboard Cite

A real case study is represented of abrupt failures in a new multi-motor gear drive of vertical rolls in the heavy slabbing mill. Modal analysis is conducted, and the lowest torsional vibration modes are verified by the data from an industrial plant. Conditions of parametric resonances due to variable stiffness of teeth are determined within the range of working speed. The branched gear drive is investigated by the non-linear dynamical model with backlashes. It is shown that instantaneous dynamic loads in driveline are strongly dependent on the difference in gap sizes and phase shift between two intermediate gears in the output gear wheel coupling. Deviation in electrical parameters by 0.5 % is considered as the additional cause of not equal load sharing of parallel motors. Results of this research allowed preventing further failures of the gearbox and optimizing slabbing mill control. The proposed approach can be used in other multi-motor machines.

show abstract

Section: Introductionmentioning

confidence: 99%

Dynamical processes in a multi-motor gear drive of heavy slabbing mill

Krot¹

2019

J. vibroeng.

View full text Add to dashboard Cite

show abstract

Synchronization of Auxiliary Mechanisms and Main Electric Drive of the Pipe Cold-Rolling Mill. Complete Solution

Ostrouhov¹,

Sychev

Григорьев

2020

Machines

View full text Add to dashboard Cite

This article deals with installations with complex and nonstandard executive instrument movement. Having analyzed the technical implementation and operational features of cold-rolling pipe mills, the research team formulated the problem of synthesizing electric drives of auxiliary mechanisms. It is shown that the conditions for choosing a mechanical converter are associated with the oscillation of the processes of the electric drive system. The finite element method and the gradient descent method are used for structural analysis of solids and electromagnetic calculations. The data of the specific cost of semiconductor converters were analyzed using a linear least-squares regression technique. The advantages of a synchronous reluctance motor of independent excitation for the electric drives of auxiliary mechanisms are given and substantiated. The optimization of the geometrical parameters of the electromechanical converter was carried out according to the maximum developed electromagnetic torque. Modern semiconductor technology in the design of special-purpose electric drives leads to a revision of the principles for determining the optimal number of phases and the structure of the motor power supply. The rationale for the use of multilevel frequency converters is given. Taking into account an in-depth preliminary analysis and an integrated approach, these tasks were successfully completed, which was confirmed experimentally at the implementation of the developed system.

show abstract

Connecting-rod dynamics of the primary drive in a cold-rolling mill

Cited by 2 publications

References 0 publications

Dynamical processes in a multi-motor gear drive of heavy slabbing mill

Dynamical processes in a multi-motor gear drive of heavy slabbing mill

Synchronization of Auxiliary Mechanisms and Main Electric Drive of the Pipe Cold-Rolling Mill. Complete Solution

Contact Info

Product

Resources

About