Built-in tension spring wet-type hydraulic arrester brake for vehicle driving axle

A built-in tension spring wet-type hydraulic arrester brake for a vehicle driving axle comprises a half axle shell body, fastening screws, supporting sleeves, pistons, connecting screws, locking nuts, transition disks, friction plates, stator plates, gaskets, elastic pin sleeves, a half axle, first bearing rings, second bearing rings, and tension springs. The pistons are installed inside a cavity of the half axle shell body, and the pistons are connected on the half axle shell body through the fastening screws and the tension springs; the stator plates are arranged inside the half axle through corresponding petal grooves; the friction plates and the stator plates are sequentially installed on the half axle through splines; and the half axle shell body and the transition disks are fixed into a whole through the connecting screws and the locking nuts, and the sealing performance of a shell body contacting end face is guaranteed through an O-shaped seal ring sleeved on the half axle shell body. The first bearing