Suspension Conveying Device

A suspension conveying device wherein a conveying traveling body is provided with a conveyed object supporter, two suspension lines that suspend the conveyed object supporter, and two suspension line pulling-up/feeding means that elevate and lower the two suspension lines respectively and individually, the respective suspension line pulling-up/feeding means include screw shafts self-rotatably borne by the conveying traveling body and driven bodies engaged with the screw shafts and moved reciprocally by forward/reverse rotation of the screw shafts to perform pulling-up/feeding operation of the suspension lines, and a motor is included that drives the screw shafts of the respective suspension line pulling-up/feeding means to rotate forward and in reverse,

• the suspension conveying device being configured so that the screw shaft of each suspension line pulling-up/feeding means is provided with a low-speed drive region, in which a feed pitch for the driven body is small, and a high-speed drive region, in which a feed pitch for the driven body is large, the respective screw shafts are installed so that the low-speed drive regions and the high-speed drive regions are disposed mutually oppositely as viewed from the driven bodies when the conveyed object supporter is at one end of an elevation/lowering stroke, and the conveyed object supporter is tilted in a middle of the elevation/lowering stroke when the screw shafts of the respective suspension line pulling-up/feeding means are driven to undergo forward/reverse rotation at a fixed speed by the motor.