三折叠门 Tri-folding gate

三折叠门 Tri-folding gate


涡轮-齿条传动3 Worm-rack drive 3
蜗轮离合器 1 Worm gear clutch 1
涡轮传动和联动机构1 Worm drive and linkage mechanism 1
蜗杆传动13：开槽轮 Worm drive 13：Slotted Wheel