Abstract:
A centrifugal separator is configured for processing a product by separating a relatively heavy component and a relatively light component therefrom. The centrifugal separator comprises a spindle (3) supported by a stationary frame (2). A drive unit (4) acts on a rotating member (5) mounted on the spindle to rotate the spindle. A centrifuge rotor (8) mounted to the spindle encloses a separation space (9). An upper bearing housing (20) is mounted to the stationary frame and supports bearings (22, 23) comprising an outer bearing ring (24) attached to the upper bearing housing and an inner bearing ring (25) attached to the spindle. The upper bearing housing is mounted to the stationary frame (2) via an elastic member (40) permitting the upper bearing housing and the spindle to move radially, and via an upper tilting member (41) permitting the spindle to tilt during operation of the centrifugal separator.
Abstract:
There is provided an electric motor/generator comprising a stator and a rotor. The stator has an outer perimeter. The rotor at least coaxially encloses the outer perimeter of the stator. The rotor is rotatable relative to the stator around a rotation axis. The rotor and the stator are separated by a flux bearing gap over which in working magnetic flux occurs. The rotor and the stator are separated by a protective gap. The protective gap is configured to close, during a deformation of the rotor, before the flux bearing gap closes, thereby avoiding closure of the flux bearing gap. The motor/generator is characterized in that the stator comprises a roller bearing and an axle. The roller bearing is coupled to the axle and rotatable around the axle. The axle is arranged off-center from the rotation axis. A distance between the roller bearing and the rotor defines the protective gap.
Abstract:
Abstract of the disclosure: A controllable bearing system for supporting a rotatable element comprises a bearing (102), spring equipment (105), and at least one electromagnet (106). The bearing is mechanically supported to be movable with respect to the rotatable element in the axial direction of the bearing. The spring equipment generates spring force for axially pressing the bearing so as to make the bearing system to support the rotatable element. The electromagnet is suitable for generating magnetic force directed against the spring force and keeping the bearing system detached from the rotatable element. Electrical current of the electromagnet determines whether the bearing system supports the rotatable element or is detached from the rotatable element. Thus, the bearing system is suitable for an auxiliary bearing that needs to be detached from the rotatable element during a normal operation and to support the rotatable element when main bearings, such as magnetic bearings, are non-operating.
Abstract:
A multi-axis manipulator in the form of a robotic arm includes a safety disc (41) and safety collar (42) at one or more of the pivoting joints (14, 17, 19, 21, 23) thereof. The disc and collar define a small running clearance in normal use, but make contact in the event of excessive wear or failure of the rotary bearing at the respective joint. An inspection window (48) permits the running clearance to be checked, and the collar may comprise a caliper brake.
Abstract:
Ein Lagerring (1) weist eine erste Schicht (2) auf. Eine Oberfläche der ersten Schicht (2) bildet eine Gleit- oder Lauffläche (4) des Lagerrings (1). Ferner umfasst der Lagerring (1) eine zweite Schicht (3). Die zweite Schicht (3) ist auf einer der Gleit- oder Lauffläche (4) abgewandten Seite der ersten Schicht (2) angeordnet. Die zweite Schicht (3) lässt sich in einem montierten Zustand bei einer geringeren Spannung als die erste Schicht (2) verformen.
Abstract:
Eine Maschine weist einen Grundkörper (2), ein Drehelement (4) und mindestens eine Lageranordnung (6) auf. Die Lageranordnung (6) weist ein Betriebslager (7) und ein dem Betriebslager (7) zugeordnetes Fanglager (8) auf. Das Fanglager (8) weist einen Grundkörperlagerring (9) und einen relativ zum Grundkörperlagerring (9) drehbar angeordneten Drehelementlagerring (10) auf. In einem Normalbetrieb der Maschine ist das Drehelement (4) relativ zum Grundkörper (2) über das Betriebslager (7) dauerhaft kontaktfrei drehbar gelagert, so dass der Drehelementlagerring (10) relativ zum Grundkörperlagerring (9) keine Drehbewegung ausführt. In einem Sonderbetrieb der Maschine, in welchem das Drehelement (4) relativ zum Grundkörper (2) nicht über das Betriebslager (7) kontaktfrei drehbar gelagert ist, versetzt das Drehelement (4) den Drehelementlagerring (10) relativ zum Grundkörperlagerring (9) in Drehung, so dass das Drehelement (4) über das Fanglager (8) zumindest kurzzeitig kontaktbehaftet drehbar gelagert ist. Zwischen dem Grundkörperlagerring (9) und dem Drehelementlagerring (10) ist eine als Flüssigmetall ausgebildete Gleitschicht (11) angeordnet.
Abstract:
The invention relates to an emergency bearing for a rotary machine with magnetic bearings consisting of an emergency undercarriage device comprising an intermediary element (9) having a large contact surface with a stator element (10). Said intermediary element (9) is positioned between a rolling member (1, 2, 3) and the stator element (10), which is fixed to the stator (15) with a radial clearance (11, 13) provided in relation to said stator element (10). A radial damping element (13) is placed between the intermediary element (9) and the stator element (10) and a contact element with very low friction (14) is disposed between the intermediary element (9) and the stator element (10) in order to reduce friction during the rotational movements between said two elements.
Abstract:
The invention concerns a contact roller bearing for a vacuum pump comprising a rotor roller bearing ring (12) a coaxial stator roller bearing ring (13) between which are provided rolling elements (14a, 14b, 14c, 14d) housed in succession and urged to roll on respective raceways of the rotor (12) and stator (13) roller bearing rings. The rolling elements comprise an alternating succession of rolling elements (14a, 14c) whereof the outer surface is made of steel and of rolling elements (14b, 14d) whereof the outer surface is made of ceramic, thereby reducing the resistance to acceleration of the contact roller bearing, which limits the friction and wear of the inner annular surface (16) of the contact roller and the corresponding bearing of the rotor.
Abstract:
A vacuum pump with a magnetic bearing assembly includes the magnetic bearing assembly with rotor position sensors and backup bearings being placed inside the rotatable shaft of the vacuum pump. The sensor placements are independent of the bearing position, so that the respective radial sensors can be at the same axial positions as the respective radial bearings, which provides sensors co-location and a space saving within a turbopump housing, in particular, in its axial direction, while sensors and mechanical backup bearings are placed in a better protected area with respect to pumped corrosive gases.
Abstract:
L'invention concerne un ensemble (2) de roulement comprenant un arbre (4) ayant un axe de rotation (X-X), un moyeu (6) monté autour de l'arbre, un palier (8) comportant une bague de roulement interne (12) fixée à l'arbre, une bague de roulement externe (10) fixée au moyeu, des éléments roulants (14) agencés entre la bague de roulement interne et la bague de roulement externe, et un dispositif de protection (20) propre à protéger le palier contre les surcharges, le dispositif de protection comprenant une première bague (24, 26) et une deuxième bague (28) portées par un support parmi l'arbre et le moyeu, la première bague étant agencée à distance de la deuxième bague, lorsque l'ensemble pour roulement subit une charge inférieure à une charge seuil; la première bague étant en contact de la deuxième bague, lorsque l'ensemble pour roulement subit une charge supérieure à ladite charge seuil.