Walking " 8 " font orbit carbon -free trolley based on cylindrical cam mechanism is adjustable

The utility model relates to a carbon -free trolley field especially relates to walking " 8 " font orbit carbon -free trolley based on cylindrical cam mechanism is adjustable. The utility model discloses a steering system includes cylindrical cam, guide rail, slider, front wheel steering shaft and fine setting system, and the fine setting system is including fine setting, spherical hinge, and cylindrical cam sets up on the spool, and the cylindrical cam front side be the support, and a shelf location guide rail sets up the slider on, and both ends are connected with slider, fine setting respectively around the spherical hinge, finely tune a piece sub -unit connection front wheel steering shaft, and cylindrical cam is last to have cam sliding groove, and the slider anterior segment is the roller, and the roller card is in cam sliding groove. The utility model discloses a device can change " 8 " font orbit through cylindrical cam's cam sliding groove, make the utility model discloses a walking dolly can mark "