Novel gearbox

The utility model provides a novel gearbox, and belongs to the technical field of machinery. The gear box body solves the problems that an existing gear box body cannot adjust the structure and is not wide in application range. The novel gearbox comprises an upper box body and a lower box body, an input shaft is transversely arranged on the upper box body in a penetrating mode, a first gear is fixedly connected to the input shaft, an output shaft and a transmission shaft are fixedly connected in the lower box body in the axial direction, the output shaft and the transmission shaft are in transmission through a gear assembly, a second gear is fixedly connected to the transmission shaft, and the first gear is meshed with the second gear. The first gear and the second gear are located in the upper box body, the upper box body can rotate around the axis of the transmission shaft relative to the lower box body, a locking mechanism is arranged between the upper box body and the lower box body, and after the upper b