ZQ001 subway drive gear box adopts one-grade parallel axis helical gear transmission. The box is separated into upper helical box and down helical box. Therefore, the structure of the gear box is compact, the transmission way is simple, the assembly is convenient and its reliability is high. It also uses splash lubrication to reduce the weight of the gear box, which makes the maintenance convenient meanwhile. The reliable part locking device is installed to the gear box to raise the operational reliability. The design lifetime of the bearing is no less than 1.6 million kilometers and the gear warranty period is no less than 1.2 million kilometers.