Mounting device for a photovoltaic module

Patent metadata

Field	Value
Publication number	US-9845824-B2
Application number	US-201514929959-A
Country	US
Kind code	B2
Filing date	Nov 2, 2015
Priority date	Nov 3, 2014
Publication date	Dec 19, 2017
Grant date	Dec 19, 2017

Abstract

A bearing inner race for a solar panel tracker positioning system includes a semi-circular shaped body having a first upper land and an oppositely facing second upper land. A first elongated aperture is positioned proximate to the first upper land and a second elongated aperture is positioned proximate to the second upper land. A first alignment ring is centered within the first elongated through aperture and a second alignment ring is centered within the second elongated through aperture. The bearing inner race also includes a ground stud integrally connected to the body in an as-cast condition of the body.

First claim

What is claimed is:

1. A bearing inner race for a solar panel tracker positioning system, comprising:
a semi-circular shaped body having a first upper land and an oppositely facing second upper land, wherein the body includes a clearance gap between the first and second upper lands sized to slidably receive a torque tube supporting at least one solar panel;
a raised rib directed outwardly from an outer surface of the body and extending substantially along the outer surface of the body except at the first elongated aperture and the second elongated aperture;
L-shaped, opposed first and second seat members, each having an outer bearing having an inwardly directed convex shaped surface;
a first elongated aperture positioned proximate to the first upper land and a second elongated aperture positioned proximate to the second upper land; and
a first alignment ring centered within the first elongated aperture and a second alignment ring centered within the second elongated aperture.

2. The bearing inner race for a solar panel tracker positioning system of claim 1 , further comprising a frangible cross-member integrally connected to and centering the first alignment ring within the first elongated aperture, and a frangible cross-member integrally connected to and centering the second alignment ring within the second elongated aperture.

3. The bearing inner race for a solar panel tracker positioning system of claim 2 , wherein when the torque tube is received in the bearing inner race, the alignment rings provide a centering position for a drill bit to drill an aperture through the walls of the torque tube received within the inner bearing race, such that a fastener threadably engaged to the torque tube extends partially into one of the elongated apertures at a mid-position of the elongated aperture, the fastener captured within the elongated aperture to limit an axial displacement of the torque tube within the bearing inner race.

4. The bearing inner race for a solar panel tracker positioning system of claim 1 , further including a ground stud integrally connected to the body in an as-cast condition of the body.

5. The bearing inner race for a solar panel tracker positioning system of claim 1 , wherein each of the first and second seat members includes a lower bearing having a convex shaped upwardly directed surface.

6. The bearing inner race for a solar panel tracker positioning system of claim 5 , wherein the inwardly directed convex shaped surface and the convex shaped upwardly directed surface each have a radius of curvature of approximately 11 inches.

7. The bearing inner race for a solar panel tracker positioning system of claim 1 , wherein the first upper land and the second upper land each include a convex shaped surface.

8. The bearing inner race for a solar panel tracker positioning system of claim 7 , wherein the convex shaped surface has a radius of curvature of approximately 11 inches.

9. A bearing inner race for a solar panel tracker positioning system, comprising:
a semi-circular shaped body having a first upper land and an oppositely facing second upper land, wherein the body includes a clearance gap between the first and second upper lands sized to slidably receive a torque tube supporting at least one solar panel;
a raised rib directed outwardly from an outer surface of the body and extending substantially along the outer surface of the body except at the first elongated aperture and the second elongated aperture;
a convex shaped surface defined by the first upper land and the second upper land;
L-shaped, opposed first and second seat members each including an upper bearing having an inwardly directed convex shaped surface and a lower bearing having an upwardly directed convex shaped surface, wherein a maximum height of each of the convex shaped surfaces occurs approximately at a mid-span of the convex shaped surfaces;
a first elongated aperture positioned proximate to the first upper land and a second elongated aperture positioned proximate to the second upper land;
a first alignment ring centered within the first elongated aperture and a second alignment ring centered within the second elongated aperture; and
a ground stud integrally connected to the body in an as-cast condition of the body.

10. The bearing inner race for a solar panel tracker positioning system of claim 9 , further comprising a frangible cross-member integrally connected to and centering the first alignment ring within the first elongated aperture, and a frangible cross-member integrally connected to and centering the second alignment ring within the second elongated aperture.

11. A bearing assembly for a solar panel tracker positioning system, comprising:
a bearing inner race, including:
a semi-circular shaped body having a first upper land and an oppositely facing second upper land, wherein the body further includes a clearance gap between the first and second upper lands sized to slidably receive a torque tube supporting at least one solar panel;
a raised rib directed outwardly from an outer surface of the body and extending substantially along the outer surface of the body except at the first elongated aperture and the second elongated aperture;
L-shaped, opposed first and second seat members, each having an outer bearing having an inwardly directed convex shaped surface;
a first elongated aperture positioned proximate to the first upper land and a second elongated aperture positioned proximate to the second upper land; and
a first alignment ring centered within the first elongated aperture and a second alignment ring centered within the second elongated aperture; and

a bearing outer race fixed to a pile, the bearing inner race retained by the bearing outer race such that the bearing inner race is rotatable within the bearing outer race, wherein the raised rib of the bearing inner race is slidably received in a slot created between opposed outwardly facing wings of the bearing outer race.

12. The bearing assembly for a solar panel tracker positioning system of claim 11 , further comprising:
a frangible cross-member integrally connected to and centering the first alignment ring within the first elongated aperture, and a frangible cross-member integrally connected to and centering the second alignment ring within the second elongated aperture; and
wherein when the torque tube is received in the clearance gap of the bearing inner race, the first and the second alignment rings provide a centering position for a drill bit to drill an aperture through opposed walls of the torque tube, such that a fastener threadably engaged to the torque tube extends partially into one of the first and the second elongated apertures at a mid-position of the elongated aperture, the fastener captured within the elongated aperture to limit an axial displacement of the torque tube within the bearing inner race.

Assignees

• First Solar Inc

Inventors

• Lamb Jeffrey
• Schneider Matthew
• Wiktorowicz Bart

Classifications

• F16C33/06

  Sliding surface mainly made of metal (F16C33/24 - F16C33/28 take precedence; {casting metal bearing surfaces B22D15/02, B22D19/08}) · CPC title

• F16C17/02 Primary

  for radial load only · CPC title

• F16C2204/20

  Alloys based on aluminium · CPC title

• G01S3/7861

  Solar tracking systems · CPC title

• F16C13/04 Primary

  Bearings with only partial enclosure of the member to be borne; Bearings with local support at two or more points · CPC title