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Influence of friction drive lift gears construction on the length of braking distance

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Abstract

The friction drive elevators the influence of the braking distance has very high significance to meet certain safety regulations and comfort. During the emergency braking the delay for the system a frame and a cabin should be within the range from 0.2 to 9.81 m/s2. However, there are no specialist literatures regarding the issues connected with emergency braking of elevating devices either. The results of the own empirical research work are presented regarding the influence of design changes on the working parameters of the friction drive elevator gears. ASG100, KB160, PP16, PR2000UD and CHP2000 types of safety progressive gears are analyzed. ASG100, KB160, PP16, PR2000UD type progressive gears are already produced by European manufacturers. CHP2000 type gears are established as the alternative option for the already existing solutions. The unique cam system has been used in the CHP 2000 gears. The cam leverage gives the chance to unblock, in a very easy way, the clamed gears after braking. Thus, it is a key aspect to perform laboratory tests over the braking process of a newly created solution. The proper value of the braking distance has a significant influence on the value of delay in terms of binding standards. The influence of loading on the effective braking distance and the value of the falling elevator cabin speed are analyzed and the results are presented. The results presented are interesting from lift devices operation and a new model of CHP 2000 progressive gear point of view.

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Authors and Affiliations

  1. Lublin Factory of Passenger Lifts Lift Service S. A. Lublin, Roztoczestreet 6, 20-722, Lublin, Poland

    Poul Lonkwic

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  1. Poul Lonkwic
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Correspondence to Poul Lonkwic.

Additional information

LONKWIC Poul, born in 1974, is currently a PhD senior lecturer at The State School of Higher Education, Chełm Poland, and the head of Technical and Production Department, LWDO Lift Service S.A., Lublin, Poland. He received his PhD degree at Technical University of Lublin in 2009. His research interests include elevators, safety gears and vibroisolation process.

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Lonkwic, P. Influence of friction drive lift gears construction on the length of braking distance. Chin. J. Mech. Eng. 28, 363–368 (2015). https://doi.org/10.3901/CJME.2015.0108.009

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  • DOI: https://doi.org/10.3901/CJME.2015.0108.009

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