Rail conveyor

The invention relates to a rail conveyor, which comprises a rack, auxiliary guide mechanisms, running mechanisms and driving mechanisms, wherein the auxiliary guide mechanisms are arranged at the top of the rack and run along a sky rail; the running mechanisms are arranged at the bottom of the rack and run along a rail; the driving mechanisms and the running mechanisms are dynamically connected; each of the running mechanisms comprises a running mechanism frame, running wheels and guide wheels; the running mechanisms are connected with the rack through the running mechanism frame; the auxiliary guide wheels are arranged on the running mechanism frame, and are positioned on both sides of a curved rail; the running wheels can be rotatablely arranged in the running mechanism frame, and are dynamically connected with the driving mechanisms; and the rolling direction of the running wheels is along the tangent direction of the curved rail. Because the rolling direction of the running wheelsin the running mechanisms