Testing Device for Hydraulic Rope System Tensile Force Equalizing Unit

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

Testing Device for Hydraulic Rope System Tensile Force Equalizing Unit

Popis výsledku v původním jazyce

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&apos;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.

Název v anglickém jazyce

Testing Device for Hydraulic Rope System Tensile Force Equalizing Unit

Popis výsledku anglicky

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&apos;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.

Druh

J_SC - Článek v periodiku v databázi SCOPUS

CEP obor

—

OECD FORD obor

20301 - Mechanical engineering

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2021

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Mechanics and Mechanical Engineering

ISSN

1428-1511

e-ISSN

—

Svazek periodika

25

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

PL - Polská republika

Počet stran výsledku

10

Strana od-do

22-31

Kód UT WoS článku

—

EID výsledku v databázi Scopus

2-s2.0-85118185761