A method is provided for supporting rotatable devices, particularly a medical scanner having an inner ring and an outer ring. According to the invention, the inner ring and outer ring are guided without contact in the axial and/or radial direction by the magnetic field of electromagnets, and the distance between them is monitored and controlled by means of distance sensors. For a bearing implementing said method according to the invention, the outer ring is made in multiple parts and has a U-shaped cross section that is open to the inside in the assembled state, into which the inner ring (1, 10, 11) extends, and electromagnets and distance sensors are disposed in the axially and radially opposite areas of the inner ring or outer ring.
The invention relates to a device for detecting and monitoring damage to races or adjacent regions of bearing rings (1, 2, 3) of anti-friction bearings. The device includes a measuring device, disposed in the anti-friction bearing chamber, having a sensor and structure for supplying sensor measurement data to the outside. The device has an energy source, which is also disposed in the anti-friction roller bearing chamber and which comprises a first coil (16) for the measuring device and a second coil (18) disposed outside the anti-friction bearing chamber and destined for inductive transfer of electrical energy to the first coil (16). The second coil (18) extends only over a part of the bearing circumference and the energy source comprises an energy accumulator (19) connected to the first coil (16).
H02J 7/00 - Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
G01R 33/14 - Measuring or plotting hysteresis curves
G01N 27/82 - Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws
3.
Method for the thermomechanical treatment of seamless rings produced on radial-axial ring rolling machines
A method and a device are provided for the thermomechanical treatment of seamless steel rings produced on radial-axial ring rolling machines, particularly rings of fine grain steel, heat-treatable steel, case hardened steel, or austenitic steel, preferably of steel tower flanges for wind turbine generators. The ring blank is inserted into the ring rolling machine at a temperature in the range of 900° C. to 1150° C. and is rolled to an outer diameter preferably in the range of 0.2 m to 10 m by a hot forming process. The hot ring (1) is quickly cooled down by a controlled process directly following the rolling, without secondary heating, from a temperature over the conversion temperature in the austenite range to a temperature below 400° C. The device includes a dipping basin filled with cooling liquid (8) or an unfilled cooling container, and a carrier (5) that can be lowered with a hoisting device (4), the rolled ring (1) lying on the carrier. Pressure nozzles (13) are arranged in the dipping basin or the cooling container (2) on one or several ring lines (11), in an equal distribution, for the targeted application of the cooling liquid (8) onto at least one of the ring-shaped surfaces of the ring (1). Measurement of the ring temperature before and/or after the cooldown is carried out, preferably, with a radiation pyrometer.
C21D 9/40 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for ringsHeat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for bearing races
The invention relates to a magnetic bearing and to a method for operation thereof. The magnetic bearing contains a ferromagnetic, movably mounted bearing element (1) and at least two magnetic devices (3o, 3u) arranged on opposing sides of the bearing element (1) and equipped with windings (6), wherein during operation of the magnetic bearing, electric currents are conducted through the windings (6) and these currents are regulated such that in an equilibrium state between the bearing element (1) and the two magnetic devices (3o, 3u), bearing gaps (10o, 10u) of predetermined size (So, Su) form. According to the invention, the temperatures produced in the magnetic devices (3o, 3u) during operation are measured and the regulation of the currents takes place such that in the equilibrium state, regardless of the load situation, the same temperatures appear in the magnetic devices (3o, 3u) or in the windings (6) thereof (figure 1).
The invention relates to a roller bearing, particularly a large-diameter rolling bearing with no center, comprising - an inner ring (1) and a divided outer ring (2) composed of a retaining ring (3) and bearing ring (4) or an outer ring and a divided inner ring composed of a retaining ring and bearing ring, and roller bodies arranged between the outer and inner rings, rolling on raceways and/or running wires (9-12) or running plates and – a nose ring (5) arranged on the inner ring (1) and extending radially (x) towards the outside or arranged on the outer ring (2) extending radially (x) towards the inside, said nose ring being supported with respect to the retaining ring (3) and the bearing ring (4) with roller bearings in the axial (y) and radial (x) directions, wherein – between the bearing ring (4) or retaining ring (3) and nose ring (5) an axial roller bearing (6) having a radial rotational axis, between the bearing ring (4) and/or retaining ring (3) and nose ring (5) at least one radial roller bearing (7) having an axial rotational axis, and between the retaining ring (3) or bearing ring (4) and nose ring (5) a combined radial-axial roller bearing (8) having axial and radial rotational axes of the rollers are arranged.
F16C 19/34 - Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load
F16C 19/38 - Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with two or more rows of rollers
F16C 19/54 - Systems consisting of a plurality of bearings with rolling friction
F16C 33/61 - RacewaysRace rings divided formed by wires
6.
METHOD FOR HARDENING AT LEAST ONE RACEWAY OF A BEARING RING FOR A LARGE-DIAMETER ROLLING BEARING
The invention relates to a method for hardening at least one raceway (2) of a bearing ring (1) for a large-diameter rolling bearing using two opposing inductors (3, 4) that can travel along the raceway (2) and that approach each other in the region of the start and end zones (30) to a minimum potential distance. According to the invention, additional means are used for making the heating of the raceway (2) more uniform in the region of the start and/or end zones (30), wherein said means can comprise, for example, a preselected adjusting or controlling of the frequency or phasing of the heating currents supplied to the inductors (3, 4), or a motion in at least one degree of freedom of an auxiliary inductor.
C21D 9/40 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for ringsHeat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for bearing races
The invention describes a seal system for bearing rings (2, 3), which are rotatable relative to one another and which form at least one sealing chamber (25), of a large rolling bearing, wherein at least one multi-lip seal element (9, 9') has one static (10) and at least one dynamic sealing region (11), a limb (21) of the static sealing region (10) is fixedly connected, in a groove (17) in an axial end surface (7, 8), to one of the bearing rings (2 or 3), the dynamic sealing region (11) which is composed of a plurality of sealing lips (13, 15) bears against corresponding radial (12) and axial sealing surfaces (14) of the other bearing ring (3 or 2), the seal element (9, 9') additionally has a support region (18) which is formed in the manner of a lip, and the support region (18) is supported against a radial sealing surface (19), which is situated in the sealing chamber (25), of the bearing ring (2 or 3) which holds the static sealing region (10).
The invention relates to a sealing system, comprising multiple components (2, 3) that can be rotated relative to one another, particularly bearing rings of a large-diameter rolling bearing, and at least one sealing element (1’), particularly comprising an elastomer material and having a static (4) and a dynamic sealing region (5), wherein the dynamic sealing region (5) has at least one sealing lip (6) equipped with a spring element (9), and the spring element (9) is produced by a strip, particularly a metal strip, having spring properties.
The invention relates to a magnetic bearing having a bearing race (12), a plurality of electromagnets (2) disposed along the circumference thereof, and at least one distance sensor (7) per electromagnet (2). According to the invention, the bearing race (12) is designed substantially isotropically with regard to the magnetic and/or thermal properties thereof, at least in the circumferential direction. This is achieved according to the invention in that a seamlessly produced block having a center hole is processed by ring rolling.
The invention relates to a bearing having a stationary bearing body (6) and a rotatably supported bearing body (1) associated therewith and at least partially entwined by a drive belt (8). According to the invention, the grounding of the rotatably supported bearing body (1) is carried out via the drive belt (8).
The invention relates to a rolling bearing which can be loaded radially and axially, in particular a double-row tapered roller bearing, composed of at least three bearing rings, in particular a lug ring (1), a support ring (2) and a retaining ring (3), and rolling bodies (4) which are arranged in between and which are guided by means of a cage (5). It is provided according to the invention that, for axial sealing, integrated shaft sealing rings (7) or other sealing elements are situated in the bearing rings, which integrated shaft sealing rings (7) or other sealing elements are in each case fixed in and/or between the bearing rings by means of clamping rings (8) or other structural elements.
F16C 19/38 - Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with two or more rows of rollers
F16C 33/78 - Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
12.
METHOD AND BEARING FOR SUPPORTING ROTATABLE DEVICES, PARTICULARLY A MEDICAL SCANNER
The invention relates to a method for supporting rotatable devices, particularly a medical scanner having an inner ring (1, 10, 11) and an outer ring (2, 12, 20). According to the invention, the inner ring and outer ring are guided without contact in the axial and/or radial direction by the magnetic field of electromagnets (3a, 3b, 13a, 13b), and the distance between them is monitored and controlled by means of distance sensors (4a, 4b). For a bearing implementing said method according to the invention, the outer ring (2, 12, 20) is a multi-part structure and has a U-shaped cross-section that is open to the inside in the assembled state, into which cross-section the inner ring (1, 10, 11) extends, and electromagnets and distance sensors are disposed in the axially and radially opposite areas of the inner ring or outer ring.
F16C 39/02 - Relieving load on bearings using mechanical means
F16C 19/06 - Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with a single row of balls
The invention relates to a device for detecting and monitoring damage to races or adjacent regions of bearing rings (1, 2, 3) of rolling bearings. It comprises a measuring device disposed in the rolling bearing chamber, having a sensor and means for supplying sensor measurement data to the outside, an energy source, which is also disposed in the rolling bearing chamber and comprises a first coil (16), for the measuring device, and a second coil (18) disposed outside the rolling bearing chamber for inductive transfer of electrical energy to the first coil (16). According to the invention, the second coil (18) extends only over a part of the bearing circumference and the energy source comprises an energy accumulator (19) connected to the first coil (16) (Fig. 1).
A method is provided for producing a bearing ring (1) for large-size rolling bearings including at least one track (3) that is provided with a hardened peripheral layer. With the method the peripheral layer that is to be hardened is exposed to the electric field of an inductor in order to be heated and is then quenched. At least two inductors (2) are disposed above a common zone (a) of the annular track (3) that is to be hardened at the beginning of the hardening process. These inductors (2) heat the opposite peripheral layer to a hardening temperature at this location. The inductors (2) are moved in the opposite direction along the annular track in order to heat the adjacent central zones (b). Sprinklers (5) that are directed onto the heated peripheral layers are turned on following a short distance, and the peripheral layers are quenched starting from the center of the zone (a) that was heated at the beginning. The inductors (2) and the sprinklers (5) continue to be moved on the halves of the rings thereof until coinciding again in a zone (c) located opposite the point of departure and once again forming a joint heating zone there. Both inductors (2) are lifted perpendicular to the surface of the track (3) upon reaching the required hardening temperature. The sprinklers (5) are directed onto zone (c).
B23P 17/00 - Metal-working operations, not covered by a single other subclass or another group in this subclass
C21D 9/40 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for ringsHeat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for bearing races
15.
ROLLER BEARING, PARTICULARLY SLEWING RING BEARING WITH NO CENTER
The invention relates to a roller bearing, particularly a slewing ring bearing with no center, having a single or multipart inner ring (1) and outer ring (2), and rolling bodies (6, 7, 8) which are arranged therebetween and which roll down on a raceway. Said rolling bodies guide a nose ring (5) fixed on the outer ring (2) with tensioning rollers (8) in the axial direction and with radial rollers (7) in the radial direction. The invention is characterized in that an additional roller bearing is arranged between the inner ring (1) and the nose ring (5) of the outer ring (2) with diagonal holding rollers (6).
F16C 19/38 - Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with two or more rows of rollers
16.
ROLLING BEARING, IN PARTICULAR CENTRELESS LARGE ROLLING BEARING
The invention relates to a rolling bearing, in particular a centreless large rolling bearing, composed of two concentric raceways (1, 2) of which the one raceway (1) has an encircling groove (15) which is open in the direction of the other raceway (2) and the other raceway (2) only has an encircling lug ring (5) which engages with a spacing on all sides into the groove (15), wherein a rolling bearing composed of cylindrical rollers (8) for absorbing radial forces is provided between the lateral surface of the lug ring (5) on the one hand and a corresponding surface in the groove (15) on the other hand, and in each case one row of cylindrical rollers (7, 9) for absorbing axial forces is provided between the end faces of the lug ring (5) and corresponding end faces of the groove (15) on the other hand, and wherein the raceway (1) which contains the groove (15) is composed of a holding ring (4) and a support ring (3). The invention consists in that a projection (12) which extends in the axial direction and which faces toward the raceway (2) is arranged on the support ring (3) and in that an additional rolling bearing with cylindrical rollers (10) is arranged between the projection (12) and the lug ring (5), such that the lug ring (5) is guided in the axial and radial direction by means of precisely two opposite rolling bearings composed of cylindrical rollers (7, 8, 9, 10).
F16C 19/38 - Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with two or more rows of rollers
The invention relates to a method and a device for the thermomechanical treatment of seamless steel rings produced on radial-axial ring rolling machines, particularly rings of fine grain steel, heat-treatable steel, case hardened steel, or austenitic steel, preferably of steel tower flanges for wind turbine generators, wherein the ring blank is inserted into the ring rolling machine at a temperature in the range of 900°C to 1150°C and is rolled to an outer diameter preferably in the range of 0.2 m to 10m by a hot forming process. According to the invention, the hot ring (1) is quickly cooled down by a controlled process directly following the rolling, without secondary heating, from a temperature over the conversion temperature in the austenite range to a temperature below 400°C. The device, according to the invention, comprises a dipping basin filled with cooling liquid (8) or an unfilled cooling container, and a carrier (5) that can be lowered with a hoisting device (4), the rolled ring (1) lying on said carrier. Pressure nozzles (13) are arranged in the dipping basin or the cooling container (2) on one or several ring lines (11), in an equal distribution, for the targeted application of the cooling liquid (8) onto at least one of the ring-shaped surfaces of the ring (1). Measurement of the ring temperature before and/or after the cooldown is carried out, preferably, with a radiation pyrometer.
C21D 1/02 - Hardening articles or materials formed by forging or rolling, with no further heating beyond that required for the formation
C21D 9/40 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for ringsHeat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for bearing races
B21H 1/06 - Making articles shaped as bodies of revolution rings of restricted axial length
patents
