文章基本信息

标题：Tensile Forces in Lift Carrier Ropes Exerted by the Fluid Pressure
本地全文：下载
作者：Leopold Hrabovský
期刊名称：Advances in Science and Technology Research Journal
印刷版ISSN：2080-4075
电子版ISSN：2299-8624
出版年度：2019
卷号：13
期号：3
页码：31-37
DOI：10.12913/22998624/110050
语种：English
出版社：Society of Polish Mechanical Engineers and Technicians
摘要：This paper describes the methodology by which it is possible to compare diﬀerent tensile forces that are caused bythe uneven distribution of loads in carrier ropes of lifts. In order to compare the applied tensile forces in a certainnumber of carrier ropes, it is possible to use the device called “rope hydraulic tension compensator”, when, for example, building new elevators, changing carrier ropes during renovations or servicing existing lifts. The comparison of tensile forces in lift carrier ropes by the described device is based on the method of liquid pressure diﬀusionin a closed vessel. The rope hydraulic tension compensator consists of a number of structural parts, the main ofwhich are double-acting hydraulic cylinders. The number of these cylinders is equal to the number of carrier ropesof the given lift. The pressure of the hydraulic ﬂuid, which is supplied to the inner shell of individual hydrauliccylinders, controls the length of extension of individual piston rods of the hydraulic cylinders. The position of thepiston in each of the hydraulic cylinders is directly proportional to the length of the extended piston rod, which corresponds to compression of the cylindrical coiled spring, above which the respective hydraulic cylinder is located.Diﬀerent compressions of individual cylindrical springs exert diﬀerent magnitude of tensile forces in suspensioneye-bolts, into whose longitudinal axes the total load size is distributed unevenly. The paper also describes thedescription and hydraulic circuit diagram of a hydraulic power unit, which is used to control the piston positionsof two-way hydraulic cylinders.
关键词：tensile force; lift; carrier rope; ﬂuid pressure.