Abstract: A bridge that may include a first photovoltaic (PV) panel holder, a second PV panel holder; and a body. The body is movably coupled, via a first interface, to the first PV panel holder and is detacheably coupled to the second PV panel holder, wherein the body is configured to move between a first position to a second position when the second PV panel holder is detached from the body, wherein when positioned at the second position, a portion of the body extends above the first PV panel holder.

Abstract: A robotic system for providing a surface cleaning device to a solar panel device, the robotic system may include (a) a drive unit that is configured to move the robotic system in relation to the solar panel device; (b) a support unit that comprises guiding elements, the guiding elements are configured to support the surface cleaning device; wherein the guiding elements comprise a first guiding element and a second guiding element; (c) an alignment unit that is configured to align, during an alignment process, the first guiding element and the second guiding element with the solar panel device; (d) sensing units that comprises a first sensing unit and a second sensing unit; wherein the first sensing unit is configured to sense a first spatial relationship between the first guiding element and a first portion of the solar panel device; wherein the second sensing unit is configured to sense a spatial relationship.

Abstract: A surface cleaning device that may include an axis; dust cleaning elements that are connected to the axis and comprise multiple fins that comprise (i) one or more first fins of a first durability and a first cleaning capability and (ii) one or more second fins of a second durability and a second cleaning capability, wherein the first durability exceeds the second durability and the second cleaning capability exceeds the first cleaning capability; and a rotating mechanism for rotating the axis and the multiple fins.

Abstract: A surface cleaning device for cleaning a surface of a solar panel, wherein the surface cleaning device may include a motion delay assembly, a first dust carrying member and a second dust carrying member that are coupled to a motor; wherein the first dust carrier member and the second dust carrier member are wipers. The motor is configured to cyclically move the first dust carrying member and the second dust carrying member along a path. The motion delay assembly is configured to cyclically introduce a momentarily delay in a progress of the first dust carrying member along the path, while the second dust carrying member contacts the surface thereby reducing a gap between the first dust carrying member and the second dust carrying member, compress the air within the gap, and induce air that is compressed in the gap to exit the gap and progress along the surface and remove dust that precedes the second dust carrying member.

Abstract: A bridge that may include a first photovoltaic (PV) panel holder, a second PV panel holder; and a body. The body is movably coupled, via a first interface, to the first PV panel holder and is detacheably coupled to the second PV panel holder, wherein the body is configured to move between a first position to a second position when the second PV panel holder is detached from the body, wherein when positioned at the second position, a portion of the body extends above the first PV panel holder.

Abstract: A surface cleaning device for cleaning a surface of a solar panel, wherein the surface cleaning device may include: a first dust carrying member; a second dust carrying member; a motor; and a motion delay assembly. The first dust carrying member and the second dust carrying member are coupled to the motor; wherein the motor is configured to cyclically move the first dust carrying member and the second dust carrying member along a path. The motion delay assembly is configured to cyclically introduce a momentarily delay in a progress of the first dust carrying member along the path, while the second dust carrying member contacts the surface thereby reducing a gap between the first dust carrying member and the second dust carrying member and induce air to exit the gap and progress along the surface and remove dust that precedes the second dust carrying member.