BREAKAWAY-PREVENT TROLLY SYSTEM FOR FLEXIBLE RETRACTABLE STRUCTURE

摘要

The present invention relates to a trolley system comprising a plate supporting a cable and a trolley unfolding or folding a flexible membrane while moving over the cable. The trolley includes: a slider (100) moving along the cable in contact with the cable; a flexible membrane combination member (200) installed in the lower part of the slider and combined with the flexible membrane; and an elastic module (E) installed in the slider. The elastic module includes: an elastic block (10) including a spring therein to move in a vertical direction as far as a predetermined distance while receiving elastic force from the spring; an upper support plate (11) supporting the elastic block from the top; a lateral support plate (12) supporting the same from a lateral side; and a lower support plate (13) supporting the same from the bottom. The lower surface of the elastic block can be moved up and down in contact with the upper surface of the plate.