Transmission case for mower

The utility model is applicable to the technical field of transmission cases, and provides a transmission case for a mower, which comprises a case body, two handles arranged on the outer side of the case body, a cutting shaft rotatably mounted at the bottom of the case body, a partition plate arranged in the case body, a driving motor and a power supply arranged at the top of the partition plate, and a power shaft mounted on an output shaft of the driving motor. The power shaft is connected with a first acceleration mechanism, the first acceleration mechanism is connected with a vertical shaft, the vertical shaft is rotatably installed on the inner wall of the bottom of the box body and is in transmission connection with the cutting shaft, a cooling mechanism is arranged in the box body, the vertical shaft is connected with the cooling mechanism, an air inlet hole is formed in the right side of the box body, and a dustproof mechanism is arranged on the outer side of the air inlet hole. The left side of the bo