Abstract: In a method for operating an electric vehicle, including an electrical drive device for driving the vehicle, a control device for controlling the driving of the vehicle, a first energy storage device for supplying the control device with a first DC voltage, a second energy storage device for supplying the drive device with a second DC voltage, and an energy supply unit providing an output DC voltage, the first energy storage device is connected to the energy supply unit via a converter device, the second energy storage device is connected to the energy supply unit, the converter device converts the output DC voltage into the first DC voltage, a first power flow from the first energy storage device to the second energy storage device is prevented and a second power flow from the second energy storage device to the first energy storage device is prevented.

Abstract: A belt pulley decoupler (1) for the transfer of torque between the belt of a belt drive and a shaft (2) in drive connection therewith, includes: a hub (5) to be fastened to the shaft, a belt pulley (3) rotatably mounted on the hub, and two helical torsion springs (18, 19) which transfer the torque between the belt pulley and the hub and are connected in parallel.

Abstract: A belt pulley decoupler is provided for transmitting drive torque from belts of an auxiliary unit belt drive to the shaft of one of the auxiliary units, including: a belt pulley, a hub secured to the shaft, and a series circuit arranged in the drive torque flow between the belt pulley and the hub and including a decoupler spring and a wrap-around band that extends in the direction of the rotational axis of the belt pulley decoupler and is arranged radially between the belt pulley and the decoupler spring. Both ends of the wrap-around band open out radially when the drive torque is transmitted, the first end of the wrap-around band is braced against the inner surface of a first sleeve rotationally fixed in the belt pulley, and the second end of the wrap-around band is braced against the inner surface of a second sleeve rotationally mounted in the first sleeve.

Abstract: A self-aligning tensioner (1) for an endless traction mechanism drive in an internal combustion engine is provided, including a base unit (2) and a separate annular tensioning arm (3), the tensioning arm (3) being slidably mounted in a sliding bearing area (4) of the base unit (2) in order to allow a rotational movement relative to the base unit (2); at least one spring element (5, 6) that tensions the base unit (2) and the tensioning arm (3) against each other is inserted between the sliding bearing area (4) of the base unit (2) and the tensioning arm (3).

Abstract: A decoupler is provided for rotationally driving a generator of an auxiliary-unit belt drive of an internal combustion engine, including: a pulley, a hub, and two bearing points, at which the pulley is rotatably supported on the hub, a series arrangement of a helical torsion spring and a one-way clutch, which allows the hub to overtake the pulley, and a spring plate, which is rotationally fixed in relation to the pulley or the hub, for the one spring end and a spring plate, which can be rotated in relation to the pulley and the hub, for the other spring end. The spring ends, which lie against ramp steps of the spring plates, radially expand the helical torsion spring as the driving torque is transmitted. The frictional torque, produced in one of the bearing points when the hub is overtaking, acts on the rotatable spring plate in a direction of rotation of the rotationally fixed spring plate.

Abstract: A rotor arrangement for an electric prime mover (6) of a motor vehicle has a rotor shaft (34), on which at least two laminate stacks (36, 38, 40, 42, 44, 46) are arranged. At least one laminate stack (36) is configured to enable a changed moment of inertia of this laminate stack (36) with respect to another laminate stack (38).

Abstract: A belt pulley decoupler is provided for transmitting drive torque from belts of an auxiliary unit belt drive to the shaft of one of the auxiliary units, including: a belt pulley, a hub secured to the shaft, and a series circuit arranged in the drive torque flow between the belt pulley and the hub and including a decoupler spring and a wrap-around band that extends in the direction of the rotational axis of the belt pulley decoupler and is arranged radially between the belt pulley and the decoupler spring. Both ends of the wrap-around band open out radially when the drive torque is transmitted, the first end of the wrap-around band is braced against the inner surface of a first sleeve rotationally fixed in the belt pulley, and the second end of the wrap-around band is braced against the inner surface of a second sleeve rotationally mounted in the first sleeve.

Abstract: A self-aligning tensioner (1) for an endless traction mechanism drive in an internal combustion engine is provided, including a base unit (2) and a separate annular tensioning arm (3), the tensioning arm (3) being slidably mounted in a sliding bearing area (4) of the base unit (2) in order to allow a rotational movement relative to the base unit (2); at least one spring element (5, 6) that tensions the base unit (2) and the tensioning arm (3) against each other is inserted between the sliding bearing area (4) of the base unit (2) and the tensioning arm (3).

Abstract: A belt pulley arrangement with a belt pulley that is fastenable to rotate on a shaft, a torsion spring arranged within the belt pulley for enabling a transmission of torque between the belt pulley and shaft. The torsion spring acts with one end against the shaft and with an other end against the belt pulley. A looped flat spiral spring is arranged radially between the belt pulley and the torsion spring and acting as a free-running clutch. The torsion spring is arranged on one of its axial ends in a first sleeve that is connected so that it can rotate with a radial inner lateral surface of the belt pulley. The looped flat spiral spring is arranged radially between the first sleeve and the torsion spring, and contacts, in its extended state, at least in some sections on the inner lateral surfaces of the first sleeve and belt pulley.

Abstract: A decoupler is provided for rotationally driving a generator of an auxiliary-unit belt drive of an internal combustion engine, including: a pulley, a hub, and two bearing points, at which the pulley is rotatably supported on the hub, a series arrangement of a helical torsion spring and a one-way clutch, which allows the hub to overtake the pulley, and a spring plate, which is rotationally fixed in relation to the pulley or the hub, for the one spring end and a spring plate, which can be rotated in relation to the pulley and the hub, for the other spring end. The spring ends, which lie against ramp steps of the spring plates, radially expand the helical torsion spring as the driving torque is transmitted. The frictional torque, produced in one of the bearing points when the hub is overtaking, acts on the rotatable spring plate in a direction of rotation of the rotationally fixed spring plate.

Abstract: A force measuring unit for measuring a force applied to an individual chain link of a chain strand is used in underground mining applications. The force measuring unit may include a housing having a first end configured to be contacted by a first chain link leg and a second end configured to be contacted by a second chain link leg, and a distance measuring device accommodated within the housing and configured to measure an actual distance between the first chain link leg and the second chain link leg. The distance measuring device may include a first unit part configured to be contacted by the first chain link leg and a second unit part configured to be contacted by the second chain link leg.

Abstract: A system and method for increasing the operational safety of mobile machines in mining operations by utilizing RFID technology includes a transmitting unit at the mobile machine, a receiving unit, and a non-machine-related RFID transponder which can be activated by the transmitting unit and in the case of activation is contactlessly detected. A reference transponder and a control unit for actuating the transmitting unit and evaluating transponder signals in measuring cycles is provided. To improve the energy requirement of the method and system, the reference transponder may be mounted on the mobile machine at a defined distance, stored in the control unit, from the transmitting unit. The signal field strength L of the transmitter signal of the transmitting unit may be changed in dependence on the response signal of the reference transponder in a calibration cycle (KCB) for eliminating the environmental influences.

Abstract: A force measuring unit for measuring a force applied to an individual chain link of a chain strand is used in underground mining applications. The force measuring unit may include a housing having a first end configured to be contacted by a first chain link leg and a second end configured to be contacted by a second chain link leg, and a distance measuring device accommodated within the housing and configured to measure an actual distance between the first chain link leg and the second chain link leg. The distance measuring device may include a first unit part configured to be contacted by the first chain link leg and a second unit part configured to be contacted by the second chain link leg.

Abstract: A belt pulley arrangement with a belt pulley that is fastenable to rotate on a shaft, a torsion spring arranged within the belt pulley for enabling a transmission of torque between the belt pulley and shaft. The torsion spring acts with one end against the shaft and with an other end against the belt pulley. A looped flat spiral spring is arranged radially between the belt pulley and the torsion spring and acting as a free-running clutch. The torsion spring is arranged on one of its axial ends in a first sleeve that is connected so that it can rotate with a radial inner lateral surface of the belt pulley. The looped flat spiral spring is arranged radially between the first sleeve and the torsion spring, and contacts, in its extended state, at least in some sections on the inner lateral surfaces of the first sleeve and belt pulley.

Abstract: A tensioning device (11) for a traction mechanism drive (1) which is arranged on an internal combustion engine and includes a drive wheel (3) arranged on a drive shaft (30) of an engine (4), one or more additional driving wheels (5, 6), and a continuously revolving traction element (2), which wraps around the drive wheel and additional driving wheels. The tensioning device has two tensioning arms (13, 14) having tensioning wheels (9, 10) mounted thereon, which apply a tensioning force to the traction element in front of and behind the drive wheel in the direction of revolution, and is provided with a spring (16) generating the tensioning force, and a tensioner housing (12), which movably mounts at least one of the tensioning arms to which the force of the spring means is applied. The tensioner housing is mounted on the engine pivotably about the axis (29) of the drive shaft.

Abstract: A tensioning device (2) for a starter generator belt drive of an internal combustion engine and a starter generator (1) with such a tensioning device. The tensioning device is to be supported on the machine housing (3, 3?) of the starter generator by a slide bearing.

Abstract: A tensioning device (2) is provided for a starter generator drive belt of an internal combustion engine and a starter generator (1) equipped with such a tensioning device. It includes a tensioning housing (8, 8a, 8b) with two belt pulleys (6, 7) and a bearing support (9) fastened at the machine housing (3) of the starter generator, on which the tensioning housing is pivotally supported via a friction bearing.

Abstract: A rotor arrangement for an electric prime mover (6) of a motor vehicle has a rotor shaft (34), on which at least two laminate stacks (36, 38, 40, 42, 44, 46) are arranged. At least one laminate stack (36) is configured to enable a changed moment of inertia of this laminate stack (36) with respect to another laminate stack (38).

Abstract: A system and method for increasing the operational safety of mobile machines in mining operations by utilizing RFID technology includes a transmitting unit at the mobile machine, a receiving unit, and a non-machine-related RFID transponder which can be activated by the transmitting unit and in the case of activation is contactlessly detected. A reference transponder and a control unit for actuating the transmitting unit and evaluating transponder signals in measuring cycles is provided. To improve the energy requirement of the method and system, the reference transponder may be mounted on the mobile machine at a defined distance, stored in the control unit, from the transmitting unit. The signal field strength L of the transmitter signal of the transmitting unit may be changed in dependence on the response signal of the reference transponder in a calibration cycle (KCB) for eliminating the environmental influences.

Abstract: The invention relates to a drive wheel (1) of an auxiliary unit belt drive of an internal combustion engine, having a running casing (2) which is operatively connected to a traction mechanism, having a hub (3) which is rotationally fixedly connected to the drive axle of an auxiliary unit, and having a damping device (4), which is arranged so as to act between the running casing (2) and the hub (3), for reducing rotary oscillations, with the damping device (4) comprising a spring store (5) which is arranged so as to act between the running casing (2) and the hub (3). In order that the running casing can be produced more economically, the invention provides that the running casing (2) is composed of a running part (6), a driver part (7) and a spring receptacle (8), with the running part (6) being rotationally fixedly and permanently connected to the driver part (7), and wherein the driver part (7) can be or is connected in a form-fitting manner to the spring receptacle (8).