Abstract: In a method for monitoring a state of a safety bearing of a rotor shaft of a machine, with the rotor shaft being supported by a magnetic bearing and the safety bearing having an outer ring and an inner ring arranged for rotation with respect to the outer ring, the rotor shaft of the machine is caught with the safety bearing when the magnetic bearing of the machine fails. The magnetic bearing is witched off for monitoring the state of the safety bearing. The rotor shaft is rotated with the machine under control of a higher-ranking controller by using a defined motion sequence, and a physical variable of the safety bearing is measured with a sensor.

Abstract: In a method for monitoring a state of a safety bearing of a rotor shaft of a machine, with the rotor shaft being supported by a magnetic bearing and the safety bearing having an outer ring and an inner ring arranged for rotation with respect to the outer ring, the rotor shaft of the machine is caught with the safety bearing when the magnetic bearing of the machine fails. The magnetic bearing is witched off for monitoring the state of the safety bearing. The rotor shaft is rotated with the machine under control of a higher-ranking controller by using a defined motion sequence, and a physical variable of the safety bearing is measured with a sensor.

Abstract: An operating method for container quay cranes used to load and unload container ships aided by a PC with a monitor in a crane driver's cabin. The crane driver operates a touchscreen on the monitor, thereby enabling the crane to reach its specified target in a fully or partially automatic manner. Several operating modes, including a training mode, are provided.

Abstract: The invention relates to a safety bearing for retaining a rotor shaft (4) of a machine (1), wherein the safety bearing (2) comprises a first carrier body (7) rotating about a virtual geometric center line (M) and roller bodies (5), wherein each roller body comprises a region (19) that is located between the center line (M) and the first carrier body (7), wherein the roller bodies (5) are each connected in a rotatable manner to the first carrier body (7) via a shaft (6). The invention creates a safety bearing (2) with which the likelihood of an occurrence of a backward-whirl is considerably reduced as compared to the safety bearings known from the prior art.

Abstract: The invention relates to a component that is suitable for use as a sliding bearing. The invention further relates to a method for the production of said component. The design of the component according to the invention provides a layer of a light metal material (13), which is provided with an oxide layer (15) containing pores (16) in the direction of the sliding surface (23) of the component. A hard material (18) is placed in the pores, which greatly increases the firmness of said layer region, thus creating the mechanical firmness for use as a sliding bearing. In order to counteract the tendency of said firm layer region to experience brittle failure, the oxide layer (15) is coated with a solid lubricant layer (20). Said solid lubricant layer comprises a metallic, ductile matrix (21), which distributes a force (F) acting at certain points over a larger surface region (b).

Abstract: A bearing arrangement and a bearing block includes a magnetic radial bearing for the contact-less support of a rotor shaft of a rotating machine, and a touchdown bearing for catching the rotor shaft. Both bearings are connected to each other permanently and in an axially aligned manner, and are elastically suspended with regard to a bearing shield, a machine housing, or a foundation of the rotating machine.

Abstract: The invention relates to a safety bearing for retaining a rotor shaft (4) of a machine (1), wherein the safety bearing (2) comprises a first carrier body (7) rotating about a virtual geometric center line (M) and roller bodies (5), wherein each roller body comprises a region (19) that is located between the center line (M) and the first carrier body (7), wherein the roller bodies (5) are each connected in a rotatable manner to the first carrier body (7) via a shaft (6). The invention creates a safety bearing (2) with which the likelihood of an occurrence of a backward-whirl is considerably reduced as compared to the safety bearings known from the prior art.

Abstract: The invention relates to a method for monitoring the state of a safety bearing (14) of a machine (12), wherein the safety bearing (14) catches a rotor shaft (1) of the machine (12) in case of failure of a magnetic bearing (6) of the machine (12), wherein the safety bearing (14) has an outer ring (3) and an inner ring (2) that is arranged rotatably in relation to the outer ring (3), wherein the magnetic bearing (6) is switched off, wherein the rotor shaft (1) is rotationally moved with a defined course of movement, wherein a physical variable (G) of the safety bearing (14) is measured by means of a sensor (5). The invention further relates to a corresponding machine. The invention allows for monitoring the state of a safety bearing (14) installed in a machine (12).

Abstract: Disclosed is a retainer bearing (1) for retaining a rotor shaft of an electric machine. Said retainer bearing (1) comprises an outer bearing ring (2) and an inner bearing ring (5). At least one gliding element (7) which is preloaded in a radial direction of the retainer bearing (10) is inserted between the outer bearing ring (2) and the inner bearing ring (5).

Abstract: A bearing arrangement and a bearing block includes a magnetic radial bearing for the contact-less support of a rotor shaft of a rotating machine, and a touchdown bearing for catching the rotor shaft. Both bearings are connected to each other permanently and in an axially aligned manner, and are elastically suspended with regard to a bearing shield, a machine housing, or a foundation of the rotating machine.

Abstract: A machine has a base (2), a rotating element (4) and at least one bearing system (6). Said bearing system (6) has an operating bearing (7) and a backup bearing (8) associated with the operating bearing (7). The backup bearing (8) has a base bearing ring (9) and a rotating element bearing ring (10) that is rotationally arranged relative to the base bearing ring (9). In a normal operating mode of the machine, the rotating element (4) is permanently received by the operating bearing (7) relative to the base (2) in a contact-free manner so that the rotating element bearing ring (10) does not rotate relative to the base bearing ring (9). In a special mode of operation of the machine, in which the rotating element (4) is not received by the operating bearing (7) in a contact-free manner, the rotating element (4) sets the rotating element bearing ring (10) rotating relative to the base bearing ring (9) so that the rotating element (4) is at least temporarily received with contact via the backup bearing (8).

Abstract: An electric machine excited by a permanent magnet, particularly a larger generator of a wind power station, is to be produced and assembled easily. According to the invention, magnetic modules (1) are provided. A rotor can be equipped, for example, with said magnetic modules. Each magnet module (1) comprises a carrier plate (4) for fastening to the rotor, at least one permanent magnet (3), which is disposed on the carrier plate (4), and a covering device (2). The at least one permanent magnet (3) is fastened to the carrier plate (4) such that it is located between the carrier plate (4) and the covering device (2). Advantageously, these magnetic modules (1) can be easily installed or replaced in the gap between the rotor and stator.

Abstract: The invention relates to a component that is suitable for use as a sliding bearing. The invention further relates to a method for the production of said component. The design of the component according to the invention provides a layer of a light metal material (13), which is provided with an oxide layer (15) containing pores (16) in the direction of the sliding surface (23) of the component. A hard material (18) is placed in the pores, which greatly increases the firmness of said layer region, thus creating the mechanical firmness for use as a sliding bearing. In order to counteract the tendency of said firm layer region to experience brittle failure, the oxide layer (15) is coated with a solid lubricant layer (20). Said solid lubricant layer comprises a metallic, ductile matrix (21), which distributes a force (F) acting at certain points over a larger surface region (b).

Abstract: Disclosed is a retainer bearing (1) for retaining a rotor shaft of an electric machine. Said retainer bearing (1) comprises an outer bearing ring (2) and an inner bearing ring (5). At least one gliding element (7) which is preloaded in a radial direction of the retainer bearing (10) is inserted between the outer bearing ring (2) and the inner bearing ring (5).

Abstract: A detection device (8) detects radial deflections (x, y) of a rotating element (2) which is mounted in a base (1) by means of a magnetic bearing system (3) so as to rotated about a rotational axis (4) and feeds these deflections to a control device (9). Said control device uses the radial deflections (x, y) to determine control signals (Sx, Sy) for the magnetic bearing system (3) and outputs them to the magnetic bearing system (3). The detection device (8) also detects a rotary frequency (f) of the rotating element (2) and feeds it to the control device (9). The control device eliminates from the radial deflections (x, y) at least one frequency portion that comprises the portions of the radial deflections (x, y) having frequencies close to a filter frequency that has a defined ratio to the rotary frequency (f). The control device (9) uses the frequency portion to determine frequency control signals (Fx, Fy) in accordance with a frequency control model.

Abstract: A compass saw comprises a drive unit for a saw blade holder carrying a saw blade, and a base plate supporting the drive unit. The base plate has on its underside a glide shoe lined on a bottom face with a contact sole. The guide shoe is provided to guide the blade at the level of the base plate, more particularly close above the contact sole, laterally to an extract such as to prevent it from deviating from the desired course, as well from canting and coming into off position.

Abstract: A router comprises a cage supporting a drive unit having a shaft on which a cutter can be fixed. A rest plate is provided with an aperture for moving the cutter therethrough. The rest plate is connected to the cage through two guide columns on which it is displaceable in axial directions of the cutter and arrestable in a selected position. The rest plate is a hollow structure open downwardly where it is closed by a detachable cover having a smooth outer surface. A cavity of the plate communicates with and encircles the aperture 21 for the cutter and grows toward an exhaust connection which extends tangentially to the cutter, i.e. in the direction in which the millings are thrown. The exhaust connection can be connected to an exhauster. Laterally on the rest plate, an adjustable slide stop may be provided having an angled leg which can be brought into a position flush with the bottom surface of the rest plate or moved downward therefrom.

Abstract: The spindle can be rotated by way of a set wheel, and thus displaced within the spindle guide. At the end of this displacement, the spindle butts against one of the set screws of a turret stop provided on the rest plate. The spindle can be locked to the respective set screw by way of a swing extension. The spindle may be hollow to pass therethrough a tool and finely adjust the set screw already locked to the spindle.