Zf Friedrichshafen Ag

Michael Siber

Jürgen Legner

Roland Fischer

Robert Morrison

Rico Glöckner

Alexey Rudolf

Xiaoting Zhu

A powertrain arrangement of a working machine, including a first and second electric motor, frame component, and transmission, the first and second electric motor being connected to the transmission for transmitting torque. The frame component forms a receiving space, in which the first and second electric motor and the transmission are accommodated. The frame component has a rear axle casing section configured to rotatably bear a universal-joint shaft connecting the transmission to a rear axle. The frame component has a top-side frame section, which is arranged adjacent to a cab floor in a vertical direction. The first and second electric motor are arranged next to each other in a transverse direction and at least partially at a same level in the vertical direction. The first and second electric motor are arranged above the rear axle casing section and below the top-side frame section in the vertical direction.

Powertrain arrangement of a work machine and a work machine

A transmission device having power splitting. In the first driving range, the mechanical power branch transmits torque from the ring gear to the additional fixed gear by the fixed gear. In this case, power branches from the ring gear. The hydrostatic power branch branches from the second sun gear. The hydrostatic branch transmits power from the first to the second hydraulic unit. The first and second hydraulic units act respectively as a pump and a motor. On one of the hydrostatic shafts, the mechanical and hydrostatic powers are added and transmitted to the output. In the second driving range, power from the planet carrier partially branches to the ring gear and passes to the hydrostatic shaft for the second hydraulic unit. An auxiliary shaft can be coupled by a gear to a fixed gear operatively connected to a shaft of the power splitting device.

Transmission device having power splitting

A transmission with power branching, and the transmission, in a first drive range, transmits torque from the ring gear to a fixed wheel. In one branch, power is transmitted from a first to a second hydraulic unit which respectively operate as a pump and a motor. At one of the hydrostatic shafts, the mechanical and hydrostatic power are summed and transmitted to the drive output. In a second drive range, power coming from the planetary carrier is partially branched off to the ring gear and transmitted, via the gear wheels of the hydrostatic shaft, to the second hydraulic unit. From the second hydraulic unit, hydraulic power passes to the first hydraulic unit. In the process, the first hydraulic unit operates as a motor and the second hydraulic unit as a pump. From the second sun gear, power is transmitted to the double planetary gear and summed.

Transmission device with power splitting

A hydrostatic-mechanical power split transmission with at least two continuous operating ranges for use in agricultural and construction machines. The transmission has a summation planetary gear and a clutch for forward drive () and a clutch for reverse drive () that are arranged upstream of the summation gear. The transmission has a first sun gear () and a second sun gear () and a ring gear such that the ring gear () can be connected to an output drive shaft (), via a clutch for the first driving range (), and the second sun gear () can be connected to the output drive gear (), via a clutch for the second operating range ().

Growing community of inventors

Nusplingen, Germany

Michael Siber