Duplex saw

A duplex saw, comprising a machine head assembly of which a top portion is mounted with a cutting working platform, a base, a rotating disk, and a machine head rotating seat positioned between the machine head assembly and the rotating disk and hinged with the machine head assembly and the rotating disk respectively, wherein the machine head assembly comprises a motor, a machine frame, a gear box body, a transmission mechanism and a saw blade, the motor is fixed on the machine frame, the transmission mechanism is provided in the gear box body and constitutes a gear box assembly, a gear shaft of the motor drives the transmission mechanism to be rotated, the saw blade is fixed on an output shaft of the transmission mechanism, the output shaft and the gear shaft of the motor are parallel to each other;

• wherein the machine frame is provided thereon with a locking mechanism for locking the gear box assembly, the locking mechanism comprises a locking wrench and a locking platen, the locking wrench passes through the machine frame and is mutually connected with the locking platen, the locking platen clamps tightly the gear box body via the machine frame.