FIELD: transportation.
SUBSTANCE: limiting device includes bearing I, a spring, a spring holder, the holder and the guide plate of the guide plate. The guide plate and the guide plate holder are sequentially arranged on one side of the spring away from the spring holder. A stop rod III is fixed on the side of the holder of the torsion spring directed towards the spring. The stop rod I is fixed on the side of the guide plate directed towards the torsion spring. The locking rod is fixed on the side II of the guide plate of the holder directed towards the guide plate. The number of guide plates is the number of n, where 1≤n≤10. When In≥2 stopper rod sn to n-th turn guide plate in the arcuate slot n-1-th guiding plate. Stopper rod rotates in the arcuate II n-th slot of the guide plate.
EFFECT: increase the center distance between the drive shaft of a manual brake and the shaft end of the chain winding chain, avoiding collision with a moving pulley chain.
1 tbl, 7 cl, 13 dwg
