A wet parking brake device includes a shaft case, a rotary shaft, a plurality of stators, a plurality of brake discs, a piston plate, and a pressing mechanism. The wet parking brake is configured such that the brake discs and the stators come in contact with each other by a pressing from the piston plate pressed by the pressing mechanism to thereby generate a braking force against the rotary shaft. The pressing mechanism includes a parking rod that is turnably supported in the shaft case and has a turning axis in the vertical direction and an arm member that is connected to the parking rod and turns around the turning axis. The parking rod includes a rod main body, an upper shaft portion and a lower shaft portion.

A wet parking brake device includes a shaft case, a rotary shaft, a plurality of stators, a plurality of brake discs, a piston plate, and a pressing mechanism. The wet parking brake is configured such that the brake discs and the stators come in contact with each other by a pressing from the piston plate pressed by the pressing mechanism to thereby generate a braking force against the rotary shaft. The pressing mechanism includes a parking rod that is turnably supported in the shaft case and has a turning axis in the vertical direction and an arm member that is connected to the parking rod and turns around the turning axis. The parking rod includes a rod main body, an upper shaft portion and a lower shaft portion.

The present disclosure relates to a hydraulic drive having a stationary housing. The hydraulic drive also has a drive shaft that extends through the stationary housing. Furthermore, the hydraulic drive has a hydraulic motor for rotating the drive shaft relative to the stationary housing. Additionally, the hydraulic drive includes a driven hub adapted to be connected to a rotatable driven element. The hydraulic drive also has a coupling/decoupling arrangement that allows the hydraulic drive to be operated in an engaged mode where the drive shaft is coupled to the driven hub in a direct drive arrangement and a disengaged mode where the drive shaft is decoupled from the driven hub. When the hydraulic drive is operated in the engaged mode torque from the drive shaft is transferred to the driven hub causing the driven hub to rotate relative to the stationary housing. When the hydraulic drive is operated in the disengaged mode the driven hub can free wheel relative to the drive shaft.

The present disclosure relates to a hydraulic drive having a stationary housing. The hydraulic drive also has a drive shaft that extends through the stationary housing. Furthermore, the hydraulic drive has a hydraulic motor for rotating the drive shaft relative to the stationary housing. Additionally, the hydraulic drive includes a driven hub adapted to be connected to a rotatable driven element. The hydraulic drive also has a coupling/decoupling arrangement that allows the hydraulic drive to be operated in an engaged mode where the drive shaft is coupled to the driven hub in a direct drive arrangement and a disengaged mode where the drive shaft is decoupled from the driven hub. When the hydraulic drive is operated in the engaged mode torque from the drive shaft is transferred to the driven hub causing the driven hub to rotate relative to the stationary housing. When the hydraulic drive is operated in the disengaged mode the driven hub can free wheel relative to the drive shaft.