A SEMI-TRAILER SUPPORT LOADING NUT

摘要

A semi-trailer support loading nut includes a screw hole (2) arranged on a nut column (1) and communicating ends of the nut. Said nut comprises a top layer (3) and an under layer (4) or a top layer (3), a media layer (6) and an under layer (4). Outline of at least two layers of the nut is squares with the same cutting angle (10). The side length of the two layers squares is equal. The outline projection of the two layers square is same along the column (1) axes. The outline projection of the other layer is in the projection of the two layers along the column (1) axes. A funneled oil cup (5) or a oil groove (5') is arranged on the top layer (3) of the nut and communicates with the screw hole (2). The under layer (4) of the nut is plane and depressed on a bearing plate (9) in a quadrate pipe to transfer load.