Актуальные проблемы в машиностроении №2 2015

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Актуальные проблемы в машиностроении. 2015. №2 Технологическое оборудование,
оснастка и инструменты
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ON THE CHOICE OF ROPE DESCENT PARAMETERS
Polykov Y. S., Ph.D. (Engineering), Associate Professor, e-mail:
Gileta V.P., (Engineering), Professor, e-mail:
Chusovitin N.A., Ph.D. (Engineering), Associate Professor, e-mail:
Bredihina A.N., Student, e-mail:
Parts K.A., Student, e-mail:
Novosibirsk State Technical University, 20 Prospect K. Marksa, Novosibirsk, 630073, Russian
Federation
Abstract
Cable cars, lifts, cable cranes and other transportation systems using cables to move goods, are
widely used in remote and mountainous areas. To arrange a permanent "top-down" traffic the rope
descent is most promising. Movement from the upper suspension point of the rope to the bottom of
the receiving site is due to the gravity of the trolley and a load. A lack of mechanization of trolley
movement along the rope makes transportation cheap and independent of the availability of power
sources. It is necessary to ensure a certain shape of its movement trajectory for the load to get to the
receiving site at a low speed. A load weight substantially affects the shape of its movement trajectory
and the rope tensile force. The dependences of the sag and tension force of the elastic thread on the
load position are obtained in the paper. A possibility of approximating the catenary line by parabola
is proved to simplify the calculation of the movement trajectory of a load along the rope with a
considerable span length and height difference in rope descent (1500 and 160 meters, respectively).
Keywords
transportation, rope descent, sag, height difference, tension, width, elastic thread, catenary line,
parabola