| 摘要 |
Control device for both opening and closing the sheets or tarpaulins used to cover the open top bodies in the industrial, agricultural and/or similar vehicles wherein driving pulleys (6a-6b) are set in motion by means of bevel gears (7a, 7b and 7c), wherein the gear (7a) with the first driving pulley (6a) and the gear (7c) with a second driving pulley (6b) are mounted coaxially one in front of the other on the opposite sides of the central bevel gear (7b) which is manually driven by means of the crank (81) and its driving shaft (8), and in that the lengths of the cable rings (3c and 3f) driven by the driving pulleys which extend between additional pulleys (5d-5′d and 5s-5′s) are disposed parallel one another so that the upper lateral lengths (3a) of the cable rings move in the same directions.
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