A bearing for single-axis solar tracking system includes a journal with a tube portion connected to a pair of flanges that are configured as a thrust-stop. The bearing further includes a race removably connected to the journal.

Embodiments of the disclosure include an extended length core sample scanning apparatus that enables the imaging of extended length core samples using medical-type CT scanners. The extended length core sample scanning apparatus has a frame that defines a U-shaped receptacle that receives core housing containing the core sample when the core sample is placed in a CT scanner. The extended length core sample scanning apparatus may have two or more rollers located in the U-shaped receptacle to enable translation of the extended length core sample through a CT scanner during scanning. The rollers may also provide for a minimum clearance between the core housing and the walls of the U-shaped receptacle. Methods of imaging an extended length core sample are also provided.

A support system for holding solar mirrors of a solar trough system includes a frame for supporting the mirrors. The system includes a rib attached to the frame. The system includes at least a first roller engaged with the rib along which the rib moves as the frame moves. A method for moving a frame supporting solar mirrors of a solar trough system includes the steps of moving the frame on a roller guided by a rib engaged with the roller and attached to the frame bottom to a first position. There is the step of moving the frame on the roller guided by the rib engaged with the roller and attached to the frame bottom to a second position. A roller for engaging with a rib attached to a frame that holds mirrors of a solar trough system. An apparatus for cleaning solar mirrors on a frame of a solar trough system. A method for cleaning mirrors on a framework of a solar trough system. A rib for a frame that holds solar mirrors of a solar trough system which engages with a roller. A support system for mirrors of a solar trough system.

A support system for holding solar mirrors of a solar trough system includes a frame for supporting the mirrors. The system includes a rib attached to the frame. The system includes at least a first roller engaged with the rib along which the rib moves as the frame moves. A method for moving a frame supporting solar mirrors of a solar trough system includes the steps of moving the frame on a roller guided by a rib engaged with the roller and attached to the frame bottom to a first position. There is the step of moving the frame on the roller guided by the rib engaged with the roller and attached to the frame bottom to a second position. A roller for engaging with a rib attached to a frame that holds mirrors of a solar trough system. An apparatus for cleaning solar mirrors on a frame of a solar trough system. A method for cleaning mirrors on a framework of a solar trough system. A rib for a frame that holds solar mirrors of a solar trough system which engages with a roller. A support system for mirrors of a solar trough system.

A support system for holding solar mirrors of a solar trough system includes a frame for supporting the mirrors. The system includes a rib attached to the frame. The system includes at least a first roller engaged with the rib along which the rib moves as the frame moves. A method for moving a frame supporting solar mirrors of a solar trough system includes the steps of moving the frame on a roller guided by a rib engaged with the roller and attached to the frame bottom to a first position. There is the step of moving the frame on the roller guided by the rib engaged with the roller and attached to the frame bottom to a second position. A roller for engaging with a rib attached to a frame that holds mirrors of a solar trough system. An apparatus for cleaning solar mirrors on a frame of a solar trough system. A method for cleaning mirrors on a framework of a solar trough system. A rib for a frame that holds solar mirrors of a solar trough system which engages with a roller. A support system for mirrors of a solar trough system.

A support system for holding solar mirrors of a solar trough system includes a frame for supporting the mirrors. The system includes a rib attached to the frame. The system includes at least a first roller engaged with the rib along which the rib moves as the frame moves. A method for moving a frame supporting solar mirrors of a solar trough system includes the steps of moving the frame on a roller guided by a rib engaged with the roller and attached to the frame bottom to a first position. There is the step of moving the frame on the roller guided by the rib engaged with the roller and attached to the frame bottom to a second position. A roller for engaging with a rib attached to a frame that holds mirrors of a solar trough system. An apparatus for cleaning solar mirrors on a frame of a solar trough system. A method for cleaning mirrors on a framework of a solar trough system. A rib for a frame that holds solar mirrors of a solar trough system which engages with a roller. A support system for mirrors of a solar trough system.

A mower deck can include roller assemblies that prolong the life of bearings by more evenly distributing the roller's load to the bearings. The roller assembly can include a roller that is secured between opposing bearings via a tapered shaft of the roller and a correspondingly tapered collar that is housed within the corresponding bearing. The interface between the tapered shaft and the tapered collar causes the collar to be secured snugly within the bearing while also providing even distribution of the roller's load to the bearing.

The invention relates to a device for receiving a workpiece in a bearing device for rotatably mounting the workpiece about a bearing axis (L) associated with a workpiece bearing surface. The device comprises a bearing pedestal (14) including a bearing element (1) which has two concavely cylindrical bearing surfaces (5, 6) that lie next to one another in the same bearing plane and symmetrically to a plane of symmetry containing the bearing axis (L), the cylinder radii of the cylindrical bearing surfaces being greater than the radius of the workpiece bearing surface for which the bearing device is intended, wherein the cylinder axes of the two bearing surfaces (5, 6) are parallel to the bearing axis (L) and have a distance between each other.

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.

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.