Abstract: A tandem vehicular photovoltaic maintenance system includes a first vehicle, a second vehicle, a maintenance assembly, and a controller. The first vehicle includes a first vehicle body and one or more wheels coupled to the first vehicle body. The second vehicle includes a second vehicle body and one or more wheels coupled to the second vehicle body. The maintenance assembly includes a brush, and the maintenance assembly is supported at the first vehicle body and at the second vehicle body. The controller is coupled to the maintenance assembly, and the controller is configured to adjust a positioning of the brush relative to each of the first vehicle and the second vehicle and to cause the brush to be rotatably driven relative to each of the first vehicle and the second vehicle.

Abstract: Methods and systems for transporting solar tracker components are disclosed herein. An autonomous mobile carrier unit includes a controller, a motive source coupled to the controller, one or more wheels coupled to the motive source to autonomously move the autonomous mobile carrier unit, and a conveyor mechanism coupled to the controller. The conveyor mechanism is configured to move one or more solar tracker components along the conveyor mechanism, relative to the one or more wheels.

Abstract: A solar tracker system having support piers including a first support pier and a second support pier. Each of the first and second support piers include a lower portion having a first ground pile and a second ground pile, respectively, and an upper portion having a first angled leg and a second angled leg coupled to each other proximate a top of the upper portion. The upper portion coupled to the lower portion via a first attachment joint and a second attachment joint, and the upper portion configured to rotate relative to the lower portion via the first attachment joint and the second attachment joint. The solar tracker system further including a torque tube rotatably supported by the support piers, a plurality of solar modules coupled to the torque tube, and a drive motor configured to cause the torque tube to rotate.

Abstract: A solar tracker support frame assembly includes a multi-leg solar tracker support frame, a hanging bearing housing assembly, a hard stop member, and a brace member. The hanging bearing housing assembly is at the multi-leg solar tracker support frame and is configured to support a torque tube below a bridge of the frame. The hard stop member interfaces with at least one of a first leg, a second leg, and the bridge of the frame. The hard stop member includes an interference surface configured to contact the torque tube and thereby impede further movement of the torque tube beyond the interference surface. The brace member extends between the first and second legs of the frame below the bridge and below the hard stop member.

Abstract: A solar tracker support structure includes a first leg, a second leg, a bridge, a first pair of pivot joints, and a second pair of pivot joints. The first leg includes first leg proximal and distal end portions. The second leg includes second leg proximal and distal end portions. The bridge extends between the first leg proximal and second leg proximal end portion. The first pair of pivot joints is configured to move the solar tracker support structure about a first axis. The second pair of pivot joints is configured to move the solar tracker support structure about a second, different axis.

Abstract: A solar tracker support frame assembly includes a multi-leg solar tracker support frame and a hanging bearing housing assembly. The multi-leg solar tracker support frame includes first and second frame legs and a bridge extending between the first and second frame legs. The hanging bearing housing assembly is at the multi-leg solar tracker support frame and is configured to support a torque tube. The hanging bearing housing assembly includes a bearing sleeve and a torque tube connector. The bearing sleeve includes a first bearing sleeve portion and a hanging bearing sleeve portion. The first bearing sleeve portion interfaces with the bridge, and the hanging bearing sleeve portion extends out from the first bearing sleeve portion below the bridge. The torque tube connector is configured to couple the torque tube to the hanging bearing housing assembly at least at the hanging bearing sleeve portion below the bridge.

Abstract: A support structure for solar trackers with thermal expansion mitigation includes a frame rotatably coupled to one or more ground piles. The support structure further includes a pivot bracket rotatably coupled to a portion of the frame with the pivot bracket including a pivot pin to which torque tube clamps are rotatably coupled. The torque tube clamps are affixed to a torque tube and solar modules are affixed to the torque tube via one or more mounting brackets. Thermal expansion/contraction of the torque tube is translated into rotational movement of the frame relative to the one or more ground piles via the rotatable couplings including the pivot bracket. The rotational movement of the frame relative to the one or more ground piles enables the torque tube to expand/contract while mitigating mechanical stress of the support structure.

Abstract: A mass port configured to tune a frequency response of an audio reproduction device is disclosed. The mass port includes a head portion and an insertion portion coupled to the head portion. The head portion includes a sealing structure on a rear side. The head portion is configured to attach to a rear plate of a driver at the sealing structure. The insertion portion is configured to be inserted into a speaker port on the rear plate of the driver. The head portion and the insertion portion include an air slot that runs through the head portion and the insertion portion.

Abstract: A mass port configured to tune a frequency response of an audio reproduction device is disclosed. The mass port includes a head portion and an insertion portion coupled to the head portion. The head portion includes a sealing structure on a rear side. The head portion is configured to attach to a rear plate of a driver at the sealing structure. The insertion portion is configured to be inserted into a speaker port on the rear plate of the driver. The head portion and the insertion portion include an air slot that runs through the head portion and the insertion portion.