Abstract: A method for operating a redundant communication network with network participants includes the steps of determining by network participants to which network channels they are connected and using a telegram for said determining by the network participants to which network channels they are connected.

Abstract: The invention relates to an electrically driven linear actuator for linearly moving a mass, in which at least one elongated actuator element, which, on the output side, acts upon the mass, is mounted inside a main pipe in a manner that enables it to slide in an axial direction, and which, on the input side, is coupled to a spindle nut that, itself, rests upon a spindle, which is rotationally mounted inside the main pipe and which can be placed in rotational motion by an electric motor.

Abstract: A power-distributed wind turbine transmission for transmitting a torque generated by a rotor hub to an output pinion rotating with increased speed compared to the former to drive an electric generator, wherein at least two parallel-connected planetary stages are provided for power-distributed speed increase internal to the transmission, wherein further coupling of the rotor hub is carried out by means of a connection ring element on the input side of the transmission, which is rotatably supported by a large roller bearing at a fixed transmission housing, and which transmits the force flow in a power-distributed manner to the hollow gears of the parallel-connected planetary stages by means of cardan-like decoupling means formed thereon.

Abstract: A drive train between a rotor and a transmission having a torque support for a wind turbine generator system, including a rotor shaft extending from the rotor and supported in this area by a first rotor shaft bearing and extending to the transmission for converting the rotor speed into a desired generator speed, wherein the rotor shaft is supported by a second rotor shaft bearing formed in the manner of a moment bearing which is arranged on the input side within the transmission in order to receive the partial rotor forces, moments and weight forces and to directly pass them on to the torque support.

Abstract: A device for resistance welding includes a welding clamp housing, a welding transformer, a welding clamp, a welding clamp drive for operating the welding clamp and a power supply using alternating supply voltage. The device may be built as small as possible and may be simple to expand. The power supply is implemented by a main converter and by drive and welding converters. The output of the main converter is connected to the inputs of the drive and welding converters. The inputs of the drive and welding converters are connected to one another. These connections are implemented by an a.c. voltage intermediate circuit.

Abstract: With a method for synchronization in a communication system that includes a central participant and at least one further participant, at least one of the further participants being synchronized with the central participant, and, to this end, a telegram with synchronization information being transmitted by the central participant to the at least one further participant, particularly efficient synchronization of the at least one participant with the central participant results due to the fact that the telegram is a data telegram.

Abstract: In a method for time synchronization of subscribers connected via a cyclically operating communication system, an item of time information is transmitted to the subscribers to be synchronized. It is provided to transmit an item of absolute time information simultaneously to all subscribers to be synchronized, for initialization, and to implement a synchronization by recalculating the local times of the subscribes at least following one or a plurality of cycles having a known cycle time. The item of absolute time information and the known cycle times are used for the recalculation.

Abstract: A method and device for controlled braking of a vehicle using a hydrostatic drive is provided. Two pivotal hydraulic motors are connected to a respective axle of the drive, driven by a hydraulic pump and regulated by a respective regulating circuit. For each axle of the drive, a respective reference variable containing the difference between a set value and the actual value of a speed of the driven wheel is continuously determined and fed back to the respective regulating circuit. A displacement of the axle load of the vehicle from a current deceleration (a) of the vehicle is dynamically determined. A resultant braking force acting on the axle driven by the hydraulic motor is determined and put into effect by the hydraulic motor through adjusting a corresponding pivot angle. A deceleration-dependent distribution of the braking force is then provided to the respective axle by a control program.

Abstract: The invention relates to a vehicle having a drive engine/motor (2) for driving a locomotive drive (6) and for operating at least one hydraulic working circuit (4). The vehicle has a hydraulic accumulator (11) which is connected to a hydraulic machine (12). The hydraulic machine (12) is connected to an output shaft (5) which connects the drive engine/motor (2) to the locomotive drive (6).

Abstract: There is disclosed a sealing bush as well as a hydraulic unit fitted with the sealing bush and a check valve. The sealing bush is made of plastic and has, on an end face, a preferably conical elevation that can be brought into sealing contact with a bearing shoulder.

Abstract: A floating bearing has a rotating, rotationally symmetric machine part (6), with an outer ring (10), which is non-rotatably supported in an intermediate bearing (1) that is located in the installation space of a housing (3, 8). An inner ring (11) is non-rotatably connected with the rotating machine part (6). A locking mechanism inhibits a relative motion in the circumferential direction between the housing (3, 8) and intermediate bearing (1) and permits a relative motion between the housing (3, 8) and intermediate bearing (1) along the rotation axis of the machine part (6).

Abstract: The invention relates to a hydrostatic piston engine (11) and a drive (1) for recovering brake energy. The drive comprises a driving shaft (4) and a first accumulator (12) for accumulating pressure energy. The first accumulator (12) is connected to a hydrostatic piston engine (11). Said hydrostatic piston engine (11) has a coupling (9) and can be connected to the driving shaft (4) by means of the coupling (9). The hydrostatic piston engine (11) comprises a housing in which a cylinder drum and the driving shaft (4) are rotatably received. The cylinder drum can be connected to the driving shaft (4) by means of the coupling (9) in a rotationally fixed manner.

Abstract: The invention relates to a catapult drive for an object to be accelerated, preferably the car of a fairground ride, wherein the object is accelerated by means of a driving element. The movement of the driving element is produced by a flexible drive and a hydraulic cylinder via which all movements of the driving element can be controlled. The invention also relates to a control system for suitably controlling the inventive catapult drive.

Abstract: The invention relates to a drive with an energy recovery and retarder function. The drive (1) comprises a hydrostatic piston engine (12) which is connected to an accumulator (16) for storing pressure energy and to a pressure limiting valve (19) for generating a braking action. Arranged downstream of the pressure limiting valve (19) is a cooler (45). The drive (1) also comprises a hydraulic motor (35) for driving a cooler fan (33), wherein the hydraulic motor (35) is acted on with a pressure medium which is delivered by the hydrostatic piston engine (12).

Abstract: Disclosed is a lifting gear valve arrangement for controlling a double-action lifting gear or an add-on unit with a continuously adjustable directional control valve and with an individual pressure compensator via which a pressure medium volume flow to and from a lifting cylinder of the lifting gear can be controlled. A proportionally adjustable pressure limiting valve is provided in the pressure medium flow path between an outlet connection of the directional control valve and a working connection of the lifting gear valve arrangement, via which the pressure inside this area can be limited to a maximum value. The adjustment of the pressure limiting valve is preferably performed as a function of the operating states of the lifting gear or of the type of add-on unit.

Abstract: A hydraulic control device according to the invention is of load-sensing design and serves to actuate a first hydraulic load and a second hydraulic load. Also provided are a first control valve for actuating the first hydraulic load and a second control valve for actuating the second hydraulic load. A first load signal can be measured on the basis of a load pressure with which the first hydraulic load is acted on, and a second load signal can be measured on the basis of a load pressure with which the second hydraulic load is acted on. Pressure medium from a pressure medium source can be supplied in parallel to the first control valve and to the second control valve. A load signal path can, in order to actuate an adjusting element which is assigned to the pressure medium source, be acted on with a highest presently measured load signal. A limiting device allows the second load signal to be limited to a predefined signal limit value.