Testing Device for Hydraulic Rope System Tensile Force Equalizing Unit
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27230%2F21%3A10247463" target="_blank" >RIV/61989100:27230/21:10247463 - isvavai.cz</a>
Result on the web
<a href="https://sciendo.com/article/10.2478/mme-2021-0004" target="_blank" >https://sciendo.com/article/10.2478/mme-2021-0004</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.2478/mme-2021-0004" target="_blank" >10.2478/mme-2021-0004</a>
Alternative languages
Result language
angličtina
Original language name
Testing Device for Hydraulic Rope System Tensile Force Equalizing Unit
Original language description
Rope elevators, also referred to as traction elevators, have a cabin suspended from a system of ropes. The system of ropes consists of at least two load-bearing steel ropes with six strands or, from the point of view of easier bending, and currently more widespread, ropes with eight strands. Lifting or lowering of the car, run between the guides, is ensured by the frictional force of the steel ropes in the grooves of the traction disk of the elevator machinery. As the load-bearing capacity of the elevator increases, the required number of load-bearing ropes also increases, especially in the case where small diameter ropes are used in traction elevators. The actual weight of the car and the weight of the load must be evenly distributed amongst all supporting ropes that are used in the given layout of the elevator. Currently, several principles are known by which it is possible to detect and also change the values of the instantaneous magnitudes of the tensile forces acting in a system of ropes. The paper describes the principle of operation of hydraulic balancing of tensile forces in the system of supporting ropes, which uses the laws of hydromechanics and knowledge of pressure transfer to any place in the fluid, known as Pascal's law. The design of the test device intended to equalize the tensile forces in the rope system consists of a steel structure against which steel ropes are attached, a hydraulic unit and the same number of hydraulic cylinders as the number of ropes. The individual cylinders are interconnected by hydraulic hoses, the pressure of the hydraulic fluid generated by the hand pump is distributed to the working spaces of the cylinders via control valves. Balancing of differently set values of tensile forces in three supporting ropes, to values of the same size, can be simulated on a test device. This presents the correct operation of the hydraulic system and the possibility of balancing tensile forces in the system of supporting ropes described by the principle of hydraulic device.
Czech name
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Czech description
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Classification
Type
J<sub>SC</sub> - Article in a specialist periodical, which is included in the SCOPUS database
CEP classification
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OECD FORD branch
20301 - Mechanical engineering
Result continuities
Project
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Continuities
S - Specificky vyzkum na vysokych skolach
Others
Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Mechanics and Mechanical Engineering
ISSN
1428-1511
e-ISSN
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Volume of the periodical
25
Issue of the periodical within the volume
1
Country of publishing house
PL - POLAND
Number of pages
10
Pages from-to
22-31
UT code for WoS article
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EID of the result in the Scopus database
2-s2.0-85118185761