Pentahedron cab of bulldozer

A pentahedron cab of a bulldozer comprises a top cover, a rear face, a left lateral face, a column, a front left lateral face, windshield wipers, doors, a front right lateral face and a right lateral face. The left lateral face, the right lateral face and the rear face are arranged below the top cover, the vertical column is arranged at the position where the left lateral face is connected with the front left lateral face, the front left lateral face is connected with the column through a hinge, the outer end of the front left lateral face is further connected with the front right lateral face, doors are arranged on the front left lateral face and the front right lateral face, and the windshield wipers are arranged on the doors. The periphery of the cab utilizes five-edge to bear, thereby ensuring firmness of the structure. The pentahedron structure is utilized, only one column is arranged in the front of the cab, shelters in the front of the cab are reduced to enable drivers to see cleanly knife angles of a