Range-change transmission device
AssigneeDaimler AG
InventorsIngo PFANNKUCHEN, Detlef SCHNITZER, Frank STEFFENS, Jens LUCKMANN
Life of this patent
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Abstract
A range-change transmission device includes a main shaft, an output shaft, and a range-change unit. The range-change unit has at least one planetary gearbox, which includes at least one first gearbox element, at least one second gearbox element, and at least one third gearbox element. The range-change unit also has at least one shifting device, which is provided at least for the selective connection of the main shaft to the first gearbox element and/or to the second gearbox element.
Claims17
1-16. (canceled)
A range-change transmission device, comprising:
- a main shaft;
- an output shaft arranged coaxially with respect to the main shaft;
- and
- a range group, comprising
- at least one planetary transmission comprising at least one first transmission element, at least one second transmission element and at least one third transmission element;
- and
- at least one shifting device configured to at least connect the main shaft to the first transmission element or to the second transmission element, the at least one shifting device comprising
- at least one shifting unit which, in a first shifting state, is configured to connect the main shaft to the second transmission element and/or, in a second shifting state, is configured to connect the output shaft to the second transmission element;
- and
- at least one further shifting unit which, in a first shifting state, is configured to connect the output shaft to the third transmission element,
- wherein at least one shifting state of the at least one shifting unit is coupled to at least one shifting state of the at least one further shifting unit.
A method for operating a range-change transmission device, which comprises a main shaft;
- an output shaft arranged coaxially with respect to the main shaft;
- and a range group, comprising at least one planetary transmission comprising at least one first transmission element, at least one second transmission element and at least one third transmission element;
- and at least one shifting device configured to at least connect the main shaft to the first transmission element or to the second transmission element, the at least one shifting device comprising at least one shifting unit which, in a first shifting state, is configured to connect the main shaft to the second transmission element and/or, in a second shifting state, is configured to connect the output shaft to the second transmission element;
- and at least one further shifting unit which, in a first shifting state, is configured to connect the output shaft to the third transmission element, wherein at least one shifting state of the at least one shifting unit is coupled to at least one shifting state of the at least one further shifting unit, the method comprising:
- forming a slow gear by coupling the output shaft to the second transmission element using the at least one shifting unit and by fixing the third transmission element using the at least one shifting unit and by coupling the main shaft to the first transmission element using the at least one additional shifting unit.
Dependencies are inferred from the claim text.