246results about "Bearing load relief" patented technology

A fluid film bearing for a rotor hub of a wind turbine includes a first part and a second part rotatably coupled to each other about a longitudinal axis. The first part includes an annular first sliding surface extending in the circumferential direction of the fluid film bearing along the first part. In addition, the second part includes a support structure and a first group of bearing pads coupled to the support structure and having a bearing pad sliding surface configured to slide on the first sliding surface. In addition, the fluid film bearing further includes a seal arranged between the first part and the second part.

A compressor assembly is provided and includes a fluid pathway, a compressor disposed and configured to compress fluid flowing along the fluid pathway and a motor configured to drive operations of the compressor. The motor includes one or more hybrid airfoil bearings to support the shaft within a housing. Each of the one or more hybrid airfoil bearings includes airfoil bearing components including a top foil immediately surrounding the shaft and additional components and passive magnetic bearing components integrated into the shaft and the additional components of the airfoil bearing components to remove a static load of the shaft on the top foil.

A hybrid airfoil thrust bearing is provided for a shaft including a thrust disc that rotates with the shaft. The hybrid airfoil thrust bearing includes airfoil bearing components and passive magnetic bearing components. The hybrid airfoil bearing components include a first top foil immediately adjacent to a first side of the thrust disc and surrounding the shaft, first additional components, a second top foil immediately adjacent to a second side of the thrust disc and surrounding the shaft and second additional components. The passive magnetic bearing components are integrated into the thrust disc and into the first and second additional components to remove a static load of the thrust disc on the first top foil and on the second top foil.

A bearing system and method of operating the same that may include an outer bearing and an inner bearing, and a bearing engagement system configured to control a rotation of the inner bearing relative the outer bearing. In examples, the bearing may include a hybrid bearing having a roller bearing and a gas bearing such as a foil bearing, leaf-type bearing, or a tilt plate bearing. The bearing engagement system may include a displacer configured to linearly translate at least the inner bearing, displace an interface element, or both, and / or an electromagnet configured to generate a magnetic field to apply a magnetic torque to the inner bearing.

A hybrid bearing assembly is provided and includes stationary components, a shaft disposed to rotate relative to the stationary components, passive magnetic bearing components integrated into the shaft and the stationary components to generate passive magnetic force to resist radial movement of the shaft relative to the stationary components and an active damping system. The active damping system includes a stationary coil, a magnetic element rotatable with the shaft to induce current in the stationary coil and a circuit electrically coupled with the stationary coil. The circuit is configured to determine from the current an attitude change of the shaft and the magnetic element and to apply damping current to the stationary coil to resist the attitude change.

A non-recirculating rolling element bearing (100) in an overrunning cage configuration includes a guide (103), a motion stage (101) and a cage (102). The guide defines a direction of motion and includes a first guide surface (108) that is essentially V-shaped. The first guide surface includes first and second rolling surfaces. The motion stage is configured to move along the direction of motion between a first end (112) and a second end (113) of the guide. The motion stage includes a second guide surface (109) that includes third and fourth rolling surfaces that are disposed opposite the first and second rolling surfaces, respectively. The cage is disposed to be partially interposed between the guide and the motion stage. The cage includes a first (105), second and third (106, 107) sets of rolling elements. The first set is disposed to roll on the first and third rolling surfaces. The second set is arranged to roll on the second and fourth rolling surfaces. The third set is arranged to roll on the first rolling surface. The guide and the rolling elements of the third set are arranged to magnetically attract each other to deflect the cage towards the guide. In a first state in which the motion stage is moving towards the first end of the guide, the first rolling element of the third set is arranged between the second end of the guide and a first end (115) of the motion stage arranged closest to the second end of the guide. In a second state in which the motion stage is moving towards the second end of the guide, the second rolling element of the third set is arranged between the first end of the guide and a second end (114) of the motion stage arranged closest to the first end of the guide.

The present invention relates to a shoe (10), in particular for a hydrodynamic bearing, said shoe (10) being characterized by providing a polymeric material part (1) and a support base (2) in metal material, said support base (2) providing coupling means (3; 6; 7); said polymeric part (1) being cast on said base (2), so as to also fill said coupling means (3; 6; 7) provided on said base (2), obtaining a firm coupling and a shape complementary to that of the base (2). The invention also relates to a process for manufacturing the shoe (10).

The invention relates to two hybrid ball bearings and to a compressor bearing arrangement having two hybrid ball bearings for the rotatable support of a rotor of a compressor to a stator of the compressor. The two hybrid ball bearings are arranged face-to-face or back-to-back and are configured to have an optimal axial play according to an inner diameter of an annular inner raceway element of one of the hybrid ball bearings and a pitch diameter of one of the two hybrid ball bearings, and the long bearing service life related to the optimal compressor operation performance is achieved.

A rotor, a magnetic bearing, and a drive unit that rotationally drives the rotor. The magnetic bearing includes a bearing stator and a ring-shaped bearing rotor member. The drive unit has a drive stator and a ring-shaped drive rotor member. The bearing stator has a plurality of bearing stator cores consisting of a magnetic material, disposed on an outer peripheral side of the bearing rotor member. The bearing stator core has a first portion extending in a first direction orthogonal to a direction facing the bearing rotor member, and a pair of second portions extending to a bearing rotor member side from both end portions in the first direction of the first portion. The drive stator is formed so as to pass through a position between an outer peripheral surface of the rotor and the first portion core and between the pair of second portions.

Non-recirculating rolling element bearing (100) in an overrunning cage configuration, comprising a guide (103), a motion stage (101) and a cage(102). The guide defines a direction of motion and comprises a first guiding surface (108) being essentially V-shaped. The first guiding surface comprises a first and a second rolling surface. The motion stage is arranged to move along the direction of motion between a first end (112) and a second end (113) of the guide. The motion stage comprises a second guiding surface (109) comprising a third and a fourth rolling surface arranged opposite to the first and second rolling surface, respectively. The cage is arranged to be partially interposed between the guide and the motion stage. The cage comprises a first (105), a second and a third (106, 107) set of rolling elements. The first set is arranged to roll on the first and third rolling surface. The second set is arranged to roll on the second and fourth rolling surface. The third set is arranged to roll on the first rolling surface. The guide and each rolling element of the third set are arranged to magnetically attract one another so as to bias the cage towards the guide. In a first state, in which the motion stage is moved towards the first end of the guide, a first rolling element of the third set is positioned between the second end of the guide and a first end (115) of the motion stage arranged nearest to the second end of the guide. In a second state, in which the motion stage is moved towards the second end of the guide, a second rolling element of the third set is positioned between the first end of the guide and a second end (114) of the motion stage nearest to the first end of the guide.

Non-recirculating rolling element bearing (100) in an overrunning cage configuration, comprising a guide (103), a motion stage (101) and a cage(102). The guide defines a direction of motion and comprises a first guiding surface (108) being essentially V-shaped. The first guiding surface comprises a first and a second rolling surface. The motion stage is arranged to move along the direction of motion between a first end (112) and a second end (113) of the guide. The motion stage comprises a second guiding surface (109) comprising a third and a fourth rolling surface arranged opposite to the first and second rolling surface, respectively. The cage is arranged to be partially interposed between the guide and the motion stage. The cage comprises a first (105), a second and a third (106, 107) set of rolling elements. The first set is arranged to roll on the first and third rolling surface. The second set is arranged to roll on the second and fourth rolling surface. The third set is arranged to roll on the first rolling surface. The guide and each rolling element of the third set are arranged to magnetically attract one another so as to bias the cage towards the guide. In a first state, in which the motion stage is moved towards the first end of the guide, a first rolling element of the third set is positioned between the second end of the guide and a first end (115) of the motion stage arranged nearest to the second end of the guide. In a second state, in which the motion stage is moved towards the second end of the guide, a second rolling element of the third set is positioned between the first end of the guide and a second end (114) of the motion stage nearest to the first end of the guide.

The invention provides a belt guide roller and a belt driver, and the belt guide roller is provided with a magnet and a bushing so as to stabilize a roller for a belt medium. The belt guide roller has a roller body extending about a vertical axis. The tape medium passes through the roller barrel to guide the tape medium on a tape path. A plurality of magnets positioned relative to the vertical axis provide an axial force to axially stabilize the tape guide roller.

Ball joint, in particular for a motor vehicle, comprising a case (12), a ball stud (16) with a ball head (18), and a first and a second bearing shell (20, 22) for supporting the ball head (18), characterized in that In addition to the first and second bearing shells (20, 22), at least one further overload bearing surface (24) is provided.

The invention provides a roller bearing multi-section tangent arc convexity design method which comprises the following steps: S1, establishing a formula Y = Aln [1 / (1-0.975 (2X / L) 2)] based on a logarithmic curve convexity design principle, where A value is a convexity axial compression coefficient, L value is the total length of a horizontal axis corresponding to a logarithmic curve, X value is the coordinate value of the horizontal axis of the logarithmic curve, and Z value is the coordinate value of the horizontal axis of the logarithmic curve; the Y value is a longitudinal axis coordinate value of the logarithmic curve; s2, taking 1 / 2 of the total length L of the abscissa of the logarithmic curve as a unit, taking the total length Y of the ordinate as a unit, and performing nondimensionalization respectively; a dimensionless coordinate point (Xn, Yn) of the arc tangent point is defined, and Xn = 2Xi / L; yn = Yi / Ymax = ln [1 / (1-0.975 (2Xi / L) 2)] / 3.689; and S3, comprehensively considering the calculation precision in engineering and the machining convenience of the product, and selecting five sections, seven sections or any higher section of tangent arc convexity to machine the bearing surface profile of the roller bearing. By means of the method, the multiple sections of tangent arc type convexity can be efficiently machined in a high-precision mode, the convexity of the logarithmic curve contour can be approximated through the multiple sections of tangent arcs, and the purposes of accuracy and convenience are achieved.

The utility model provides a kind of self-lubricating linear guide rail, comprising: track frame, slider, multiple oil storage components, multiple pump pressure components and multiple positioning components, wherein, slider sliding installation is in track frame top end, multiple ball bearings are installed between slider inboard and track frame, multiple oil storage components are respectively arranged in the inboard of the four corners of slider, multiple pump pressure components are respectively arranged in the inside of the two sides of slider, one pump pressure component is respectively connected with two oil storage components, pump pressure component side is provided with sealing component, multiple positioning components are respectively installed in the two ends of track frame, and positioning component is compatible with sealing component.The self-lubricating linear guide rail of the utility model embodiment is mechanically linked with pump pressure system by manually adjustable positioning component, realizes the control single lubricating oil output according to load weight, effectively solves the problem of insufficient lubrication or over-lubrication caused by oil output fixed of traditional self-lubricating guide rail.

To provide a bearing device that is excellent in corrosion resistance to fluorine gas, and is also excellent in dimensional accuracy and durability.SOLUTION: A bearing device to be used in a fluorine gas environment is provided. The bearing device comprises: a magnetic bearing comprising a magnetic body and an electromagnetic coil; and a touchdown bearing for protecting the magnetic bearing, and comprising an inner ring, an outer ring, and a plurality of rolling bodies arranged between the inner ring and the outer ring. The inner ring and the outer ring of the touchdown bearing is made of a NiCrAl alloy.SELECTED DRAWING: Figure 1

A main bearing unit of a wind turbine drivetrain is provided, including a tapered roller bearing arranged between a housing of the main bearing unit and the low-speed shaft of the drivetrain; a press-fit connection between an inner surface of the housing and the outer surface of the bearing cup; and facilitating an axial displacement of the bearing cup to reinstate preload force on the bearing. A method of reinstating a preload force in a bearing of such a main bearing unit is further provided.

An integrated journal bearing (IJB) is disclosed that comprises a shaft extending in an axial direction; a housing through which the shaft extends in the axial direction, the housing surrounding the shaft in a radial direction; an active magnetic bearing (AMB) arranged within the housing and surrounding the shaft in the radial direction; at least a first fluid film journal bearing (JB) arranged within the housing and surrounding the shaft in the radial direction, the first JB being axially adjacent to the AMB such that first JB and the AMB do not share a common radial clearance; and a controller in signal communication with the AMB and configured to supply current thereto to operate the AMB by controlling a magnetic force generated thereby. Oil conduits are defined through the housing that are configured to feed and drain oil through both the AMB and first JB clearances.

A bearing system (20) for supporting a shaft (18), comprising: a bearing (30) including: an inner race (32b) about an axis (A), the inner race (32b) having an interior coupled to the shaft (18); rolling elements (34b) about the axis (A) and around the inner race (32b); and an outer race (38b) about the axis (A) and around the rolling elements (34b); a housing (50) having a cavity (52) defining an axial location (X) relative to the axis (A), the bearing (30) received by the cavity (52); a first axial loading structure (60) in the cavity (52) and operatively connected to the bearing (30); and a second axial loading structure (70) in the cavity (52) extending axially away from the axial location (X) in a first axial direction, the second loading structure (70) opposing movement of the bearing (30) relative to the axial location (X) in a second axial direction when the bearing (30) loads the second axial loading structure (70) in the second axial direction, the first and second axial loading structures operationally independent from one another.

A hybrid airfoil thrust bearing is provided for a shaft (602) including a thrust disc (603) that rotates with the shaft. The hybrid airfoil thrust bearing includes airfoil bearing components (610) and passive magnetic bearing components (630). The hybrid airfoil bearing components include a first top foil (611) immediately adjacent to a first side of the thrust disc and surrounding the shaft, first additional components (612), a second top foil (613) immediately adjacent to a second side of the thrust disc and surrounding the shaft and second additional components (614). The passive magnetic bearing components are integrated into the thrust disc and into the first and second additional components to remove a static load of the thrust disc on the first top foil and on the second top foil.

A bearing assembly for mounting a rotatable shaft of a pump and the pump are disclosed. The bearing assembly comprises: a bearing comprising an outer ring and an inner ring; a bearing support configured to support the outer ring of the bearing, the bearing support surrounding at least a portion of an outer surface of the outer ring extending across at least a portion of one end surface of the outer ring; and a shield extending from the bearing support towards the inner ring to thereby obscure at least a portion of an annular gap between the inner and outer ring.

Apparatus for containing a flywheel comprising: a flywheel; a shaft; a bearing arrangement for supporting the shaft; and a housing for housing the flywheel, the shaft and the bearing arrangement; wherein the flywheel is mounted on the shaft, the shaft is mounted to the bearing arrangement, and the bearing arrangement is mounted to the housing; wherein the flywheel has a rim formed by a circumferential face of the flywheel, and a hub formed by a central region of the flywheel, the hub being wider, axially, than the rim such that a circumferential contact surface is formed by the hub that is coaxial with the rim; wherein the housing comprises an annular force transfer region that faces, and is concentric with, the contact surface; and wherein, in use, excessive radial movement of the flywheel results in the contact surface contacting the transfer region.

An electric motor system includes a drive shaft configured to rotationally drive a load, a bearingless motor and a radial magnetic bearing arranged side by side in an axial direction of the drive shaft, and a thrust magnetic bearing disposed between the bearingless motor and the radial magnetic bearing. A radial load on the drive shaft is supported in a non-contact manner by the bearingless motor and the radial magnetic bearing.

The present invention relates to an axial alignment system for a rotary electric machine rotor, comprising at least one first fixing ring (110), at least one first permanent magnet ring (115), at least one second fixing ring (120) and at least one second permanent magnet ring (125). Furthermore, the present invention relates to an axial alignment system comprising at least two first fixing rings (110), at least two first permanent magnet rings (115), at least one second fixing ring (120), and at least two second permanent magnet rings (125). The invention further relates to corresponding rotary electric machines.

The utility model discloses a steering gear bearing, which belongs to the technical field of steering gears, and comprises two outer ring bodies and two inner ring bodies, the inner walls of the two outer ring bodies and the outer surfaces of the two inner ring bodies are jointly connected with a plurality of balls in a sliding manner, and the outer surfaces of the balls are jointly connected with two limiting frames in a sliding manner. The two limiting frames are connected in a clamped mode, the inner walls of the two limiting frames are fixedly connected with the inner ring body, and first arc-shaped grooves are formed in the inner walls of the two outer ring bodies; through cooperation of a first arc-shaped groove, a second arc-shaped groove, a first groove, a first positioning hole, a first positioning rod, a first screw head, a first nut, a second groove, a second positioning hole, a second positioning rod, a second screw head and a second nut, people can disassemble and assemble the bearing, and therefore people can maintain the bearing conveniently; and due to the arrangement of the first clamping groove, the first clamping block, the second clamping groove, the second clamping block, the positioning groove and the positioning block, the overall stability of the bearing is greatly improved.

A bearing mount for mounting a bearing within a housing is disclosed. The bearing mount includes a plurality of biasing members spaced about a perimeter of the bearing mount to define a channel for receiving the bearing. Each biasing member includes a first end, a second end, and an intermediate portion intermediate the first and second ends. The first and second ends of each biasing member are configured to contact the housing at respective first and second points such that the intermediate portion is not supported by the housing between the first and second points, and the intermediate portion of each biasing member is configured to position the bearing within the channel. An electric motor including the bearing mount is also disclosed.

A rotary machine damper 18 includes: an inner member 30 that is capable of supporting a bearing 16 that rotatably supports a shaft 12 of a rotary machine; an outer member 40 that is provided on an outer circumferential side of the inner member 30; and a magnet 50. One of the inner member 30 and the outer member 40 is an electrically conductive member, and the magnet 50 is fixed to the other one of the inner member 30 and the outer member 40 and faces the one of the inner member 30 and the outer member 40 through a gap.