Waterproof roll closing and fixing device

The utility model relates to a waterproof roll closing fixing device which comprises a body, and a transverse groove is formed in the middle of the front side of the body. Pulleys are rotationally arranged at the upper and lower ends of the transverse groove; a first inner groove is formed in one side of the transverse groove, and a second inner groove is formed in the other side; one end of the transverse rod penetrates through the side wall of the transverse groove, the tail end of the transverse rod is arranged in the first inner groove, the other end of the transverse rod penetrates through the side wall of the transverse groove, and the tail end of the transverse rod is arranged in the second inner groove; gears are arranged at two ends of the cross rod; vertical grooves are formed in the upper end and the lower end of the open end of the first inner groove, and vertical plates are slidably arranged in the vertical grooves. A first rack meshed with the gear located in the first inner groove is arranged o