A bearing system for a rotating turret mounted on a vessel includes upper radial and axial bearings placed on a stiff bearing support ring. The bearing support ring is isolated from deflections in the vessel's caisson. Through the isolation, the radial and axial bearings are less affected by deflection of the vessel for example due to waves. The bearing support ring is supported vertically by a system of hydraulic cylinders serviced by multiple hydraulic systems for redundancy. The bearing support ring alternatively can be supported by an articulated steel structure.

A bearing system including a wheel assembly transmitting load to a damping assembly, wherein the wheel assembly is configured to rotate angularly relative to the damping assembly.

The present application provides a tractor assembly and an elevator. The tractor assembly includes: a traction sheave, having a traction means fitting surface and a first transmission surface on a peripheral surface thereof; a plurality of support wheels, configured to support the traction sheave, and each having a second transmission surface on a peripheral surface thereof; and support wheel bases, configured to support the support wheels through support shafts, wherein the first transmission surface of the traction sheave is in transmitting cooperation with the second transmission surfaces of the plurality of support wheels respectively. According to the tractor assembly and elevator of the present application, the support wheels are disposed to achieve the transmitting cooperation of the traction sheave during operation of the elevator and support the traction sheave, thus omitting the load and drive bearings required by a conventional traction sheave. Therefore, not only the weight of the unit is reduced, but also the reserved hollow part of the traction sheave increases the area of ventilation, thus improving the heat dissipation effect of the rotor winding of the traction unit. In addition, this structure is also easy to disassemble/assemble and maintain.

A slotted tube shaft carrying a blade head of a blade twister rotates in a slotted, stationary bearing housing for an endless band-shaped cutting or sawing element supported by two axially spaced subassemblies each having C-shaped, axially spaced, and slotted inner and outer bearing washers radially between the slotted stationary bearing housing and the slotted tube shaft. The inner and outer washers are fixed in the stationary bearing housing against rotation relative thereto with slots of the stationary bearing housing and washers radially aligned with one another. Respective sets of at least three roller bearings centered on and angularly distributed about the axis and fixed against angular movement between each of the inner washers and the respective outer washer. Each roller bearing radially outwardly engages the slotted stationary bearing housing and radially inwardly engages the tube shaft.

A magnetic conveyance system comprising a support structure having a ferromagnetic capacity and a trolley moveable upon the support structure in a plurality of directions. The trolley may include a trolley frame and at least one attractor cell disposed on the trolley frame. The at least one attractor cell may comprise a housing and at least one magnet, at least one friction reducing load spreading device, and a load transfer member disposed within the housing. The magnet may provide a magnetic attraction force between the trolley and the support structure. The friction reducing load spreading device may comprise a plurality of bearing balls circulating within a reservoir and a channel formed by the load transfer member disposed within the housing. The load transfer member may also include a bearing surface wherein a portion of the plurality of bearing balls is disposed between the bearing surface and the support structure.

An arrangement for supporting a rotary drum, the rotary drum having at least three riding rings distributedly arranged along the axial direction of the rotary drum, the arrangement including a pair of relatively spaced rollers for supporting a riding ring, at least one bearing for each roller, a support for each bearing mounted for movement of the roller toward and away from the shell of the rotary drum and a spring system exerting a spring force acting on the support to counteract the weight of the rotary drum resting on the rollers, wherein the spring system includes a pressure vessel charged with a compressed gas that exerts the spring force and the rotary drum includes at least three riding rings and only at least one middle ring arranged between two outer rings is supported by a pair of relatively spaced rollers that are equipped with the spring system.

A journal bearing includes a carrier ring, a plurality of bearing pads disposed on a radially inner side of a lower-half region of the carrier ring and configured to support a rotor shaft from below, and a pair of side plates disposed on both sides of the plurality of bearing pads with respect to an axial direction of the rotor shaft. Each of the side plates includes a first region including a circumferential range upstream of a first bearing pad positioned furthest upstream among the plurality of bearing pads, and a second region positioned upstream of the first region and has a larger distance between an inner peripheral surface of the side plate and an outer peripheral surface of the rotor shaft than that of the first region.

This relates to an electrical rotary joint device configured to equip an energy exploitation installation including a first part having an electrical connector and a first electrical track electrically connected to the first connector, a second part having a second electrical connector and a second electrical track electrically connected to the second connector, and an electrical interconnection mechanism configured to electrically interconnect the first and second electrical tracks, with the first part and the second part being movable with respect to each other and defining between them a closed internal chamber in which the first and second electrical tracks and the electrical interconnection mechanism are housed, the latter including electrical contact members that are housed, in particular prestressed, between the first and second electrical tracks and are configured to form rolling deformable contacts between the first and second electrical tracks.

A magnetic conveyance system comprising a support structure having a ferromagnetic capacity and a trolley moveable upon the support structure in a plurality of directions. The trolley may include a trolley frame and at least one attractor cell disposed on the trolley frame. The at least one attractor cell may comprise a housing and at least one magnet, at least one friction reducing load spreading device, and a load transfer member disposed within the housing. The magnet may provide a magnetic attraction force between the trolley and the support structure. The friction reducing load spreading device may comprise a plurality of bearing balls circulating within a reservoir and a channel formed by the load transfer member disposed within the housing. The load transfer member may also include a bearing surface wherein a portion of the plurality of bearing balls is disposed between the bearing surface and the support structure.

In a surveying device having a base for positioning the surveying device and a pitch component having an optical beam path for surveying a target, the pitch component is radially and axially mounted and is rotatable in relation to the yaw component in a yaw component, which is movable in relation to the base, on the basis of a rotation body chucked in a self-centering manner in two cavities.