Abstract: An accumulator system has a high-voltage accumulator for mobile work machines. A battery management system, has a controller-line connections which can be switched by switches; and a data bus for connection to a work machine control unit. In order to advantageously render an electrical-system battery unnecessary, the battery management system comprises, for voltage supply, a DC-DC converter which is located upstream of the controller in terms of current flow and which is connected to the high-voltage accumulator via a standby circuit. The standby circuit can be activated by means of a circuit that is external to the accumulator system.

Abstract: A construction vehicle has a slewing ring on which a superstructure is rotatably mounted, and an undercarriage supporting the slewing ring. The undercarriage includes an upper chassis, having an upper propulsion device, that is rigidly connected to the slewing ring, and a lower chassis having a lower propulsion device that is mounted in a pivotable manner with respect to the upper chassis. Furthermore, a pivoting apparatus is provided in order to pivot the lower chassis relative to the upper chassis.

Abstract: A device for controlling a working machine has at least two control levers which are each operatively connected to at least one control device via an actuation unit. The actuation unit comprises a switching device with which the assignment between control levers and control devices is interchangeable. The switching device comprises at least four levers, of which every two levers are assigned to a control lever. Each of the four levers has a stop point for an actuation element. Each actuation element engages on the stop point with the respective assigned lever via couplings that can be detached without tools.

Abstract: A construction vehicle has a slewing ring on which a superstructure is rotatably mounted, and an undercarriage supporting the slewing ring. The undercarriage includes an upper chassis, having an upper propulsion device, that is rigidly connected to the slewing ring, and & lower chassis having a lower propulsion device that is mounted in a. pivotable manner with respect to the upper chassis. Furthermore, a pivoting apparatus is provided m order to pivot the lower chassis relative to the upper chassis.

Abstract: A device for controlling a working machine has at least two control levers which are each operatively connected to at least one control device via an actuation unit. The actuation unit comprises a switching device with which the assignment between control levers and control devices is interchangeable. The switching device comprises at least four levers, of which every two levers are assigned to a control lever. Each of the four levers has a stop point for an actuation element. Each actuation element engages on the stop point with the respective assigned lever via couplings that can be detached without tools.