CARRYING DEVICE BY SELF-TRAVELING TRUCK

PROBLEM TO BE SOLVED: To smoothly turn in a curved path with a minimum radius of curvature by rotatably mounting a support shaft on a wheel housing, and journalling a guide roller on the support shaft. SOLUTION: A support shaft 14 is rotatably supported on a wheel housing 15 through a bearing body 15a. Paired guide rollers 13, 13 are rotatably supported on a guide roller support body 14a formed in the lower part of the support shaft 14 through their roller shafts 13a, 13a. According to this structure, the axial center of the rollers 13, 13 is rockable about the axial center of the support shaft 14 according to the rotation of the support shaft 14 to have degree of freedom. Thus, the guide rollers 13, 13 are regularly rolled according to the form of the rolling surface of the curved part of a guide rail 3 while it is in contact with it without forming a clearance with a fixed force. According to this, a self-traveling truck can be smoothly turned without receiving a turning resistance.