An axle driving apparatus with an electric motor is used in a work vehicle that travels by driving right and left wheels with a common electric motor. An axle case for accommodating an input shaft, a gear mechanism, a first axle, and a second axle has an input shaft support. An inverter case is mounted on an end surface of the motor case that is fixed to the input shaft support. The inverter case has a base end mounted on the end surface of the motor case and a terminal end which is on the opposite side with respect to the base end. The terminal end protrudes radially outwardly from the outer circumferential surface of the motor case in a direction not facing the first and second axles.

A geared motor includes a gear unit, a first, a second, or a third electric motor, and an adapter part situated between the gear unit and the electric motor. On its side facing the electric motor, the adapter part has a first, a second, and a third centering device, and on the side facing away from the electric motor, it is connected to the gear unit. The centering devices are radially set apart from one another, and the second centering device is situated radially between the first and third centering devices. The electric motor has an axially protruding centering ring, which is centered by only a single one of the centering devices of the adapter part, and the other centering devices are radially set apart from the centering ring and/or have no centering function, e.g., for the centering ring.

Medical robots used for surgical operations comprise robot arms that have a number of joints that provide flexibility to a tool at the end of the robot arm. The joints in such a robot arm for surgical operations have drive units 1 comprising drive components 2, 3, 4, 5, 6, 7 in a frame 10. The drive unit 1 for the robot joint is complex and assembling and repairing and or replacing the unit is not easy. According to the invention the drive components 2, 3, 4, 5, 6, 7 are fixed in rings 15 where the inner shape of a ring 15 is adapted to take up and fixate a component 2, 3, 4, 5, 6, 7 and where the outer diameter of the rings 15 fits in a cylindrical hole 16 of the frame 10 and where the rings 15 are fixed to the frame 10.

A motor includes a casing, a stator, and a rotor. The casing includes an inner periphery having a plurality of first assembling structures. The stator is disposed on the casing and includes a plurality of magnetic pole modules each of which is independently separable. Each of the plurality of magnetic pole modules includes at least one second assembling structure. Each of the plurality of magnetic pole modules is detachably coupled in an axial direction to the casing by coupling each of the at least one second assembling structure to an associated one of the plurality of first assembling structures. The rotor is rotatably disposed within the stator. An air gap is formed between the rotor and the stator.

The present disclosure relates to a medical pump drive comprising a pump housing and a pump motor provided in the pump housing. The pump drive also includes a rechargeable voltage source for storing electrical energy, or a rechargeable battery, for a voltage supply of the pump motor and a magnetic section for magnetically coupling of further pump sections, and/or for magnetically driving of elements, in particular a magnetically driven pump rotor. The pump also includes an electronic controller. The disclosure further relates to a pump, an induction charging station, a tube set, and a blood treatment apparatus.

In a first aspect, a method for removing an electromagnetic module from an electrical machine is provided. The electrical machine comprises a plurality of electromagnetic modules having an electromagnetic material. The electromagnetic modules comprise base and a support extending from the base and supporting the electromagnetic material. The base comprises a bottom surface and a first side surface. The first side surface comprises an axially extending groove defining a cooling channel with an axially extending groove of a first side surface of an adjacent electromagnetic module. The method comprises inserting a rod in a cooling channel formed by the groove of the electromagnetic module to be removed and a groove of an adjacent electromagnetic module; releasing the electromagnetic module to be removed from a structure of the electrical machine; and sliding the electromagnetic module to be removed along the rod.

A modular fluid pump includes a stator having a plurality of stator teeth and windings that are positioned on the stator teeth. A rotor has a central shaft and substantially hemispheric ends and a plurality of magnets that define an electromagnetic communication with the windings. A housing surrounds the stator and includes a fixed end cap that receives one of the hemispheric ends of the central shaft and defines a rotational axis of the rotor. A securing end cap that receives the other hemispheric end of the central shaft. The central shaft and the fixed and securing end caps define the rotational axis of the rotor. Engagement of the hemispheric end with the central shaft and the fixed and securing end caps maintains the rotor and the central shaft aligned with the rotational axis and balanced within the stator.

The invention relates to a synchronous electric machine for aircraft, which comprises a stator and a wound rotor inserted into the stator, the stator comprising two sets of stator coils intended to be connected to different power converters, and the wound rotor comprising a rotor shaft and two rotor coils each intended to be supplied with a different supply current.

The two sets of stator coils are arranged in the stator in such a way that when a first set of stator coils fails, the second set of stator coils cooperates with at least the second rotor coil supplied with the associated supply current in order to generate a mechanical torque on the rotor shaft, and so that the power converter connected to the first set of stator coils does not deliver any electrical power.

The present disclosure relates to methods and systems for determining the torque applied to a long shaft of a motor. A three-phase motor has a shaft, a main rotor-stator assembly and two sense stator-rotor assemblies. A control circuit applies three phase power to cables connected to the assemblies. At a measurement circuit, time-varying voltages on the cables are measured, which include the voltage induced due to the two sense rotor-stator assemblies. The sense assemblies differ from the main motor assembly to induce additional, small voltages into the electrical circuit. A transformation is applied to these signals to determine the main frequencies, amplitudes, and phases of the different signals. Using the phase differences among the voltages induced by the first and second sense rotor-stator assemblies and the main rotor-stator assembly, the torque on the shaft may be determined.

Provided is a magnetic strain wave gear device that makes it possible to achieve both improvement of the efficiency of assembly work and suppression of decrease in energy conversion efficiency. A magnetic strain wave gear device includes: a stator having a stator core, a stator winding, and a stator magnet; a first rotor; and a second rotor. The second rotor includes a second rotor core provided with a plurality of rotor magnet insertion holes and a plurality of rotor magnets inserted into the plurality of respective rotor magnet insertion holes. The first rotor includes a cylindrical first rotor core and a first rotor end plate. The first rotor end plate has a rotor magnet passage hole through which the rotor magnets can be inserted into the rotor insertion holes from outside in a direction of a rotation shaft.