Patent Description:
The present disclosure relates to solar power generation systems, and more particularly, to support structures for solar arrays within a solar tracking system.

One of the most significant, costly, and time-consuming aspects relating to the manufacture and installation of solar trackers is the use of piers to support the solar modules. These piers, typically C-channels, W-channels, I-beams, or the like, are driven deep into the ground using costly heavy machinery such as pile driving equipment or by casting the piers in-situ using costly micro-pile equipment. Patent application <CIT> discloses a solar tracker comprising a base, a support frame and panel assembly that may be rotatable according to the movement of sun. Patent application <CIT> discloses a two-piece truss leg with an articulating coupler for an A-frame-shaped truss foundation system for a single-axis trackers. As can be appreciated, each process not only requires costly equipment, but also requires a significant amount of time to complete, driving up the cost of installing solar tracking systems. In view of these costly processes, solar tracker foundations that alleviate the need for costly and time-consuming processes involving heavy machinery are needed.

<CIT> discloses a pier according to the preamble of claim <NUM>.

In accordance with an aspect of the present disclosure according to the claim <NUM>, a pier for a solar tracking system includes a bearing housing assembly, a frame, the frame defining an A-profile having a pair of legs and a crown at a center portion thereof, and a support bracket, the support bracket coupled to a portion of the crown of the frame at a first portion thereof and coupled to a portion of the bearing housing assembly at a second portion thereof, and a fastener, the fastener coupling the bearing housing assembly to the support bracket, wherein the fastener includes a pair of inclined washers, the pair of inclined washers causing the fastener to engage the bearing housing assembly and the support bracket at an angle relative thereto.

In other aspects, the bracket may define a U-shaped profile having a channel defined therethrough, wherein the crown of the frame is received within a portion of the channel.

In aspects, the pier may include a support bracket, the support bracket interposed between each of the pair of legs of the frame, a first end portion of the support bracket coupled to a portion of the first leg and a second, opposite end portion of the support bracket coupled to a portion of the second leg.

In accordance with another aspect of the present disclosure, not part of the present invention, a pier for a solar tracking system includes a plurality of legs, the plurality of legs coupled to one another to form a tripod type formation, wherein the plurality of legs includes a saddle interposed between one of the.

In other aspects, the first and second half sections may cooperate to compress the saddle therebetween to inhibit movement of the motor mount relative to the saddle.

In certain aspects, a pair of the plurality of legs may define an A-shaped profile.

In other aspects, the saddle may be coupled to a crown of the A-shaped profile of the pair of legs.

In accordance with yet another example, not part of the present invention, a damper assembly for use with a solar tracker includes an upper damper mount operably coupled to a portion of a torque tube of the solar tracker, a lower damper mount operably coupled to a portion of a pier of the solar tracker, and a strut operably coupled to the upper damper mount at a first end portion thereof and operably coupled to the lower damper mount at a second, opposite end portion thereof, wherein rotation of the upper damper mount effectuates a compression or an extension of the strut between the upper damper mount and the lower damper mount.

In aspects, the lower damper mount may include first and second half sections, the first and second half sections hingedly coupled to one another to permit the first and second half sections to transition from a first, open position, to a second, closed position.

In other aspects, the lower damper mount may define an interior surface, the interior surface including a plurality of protuberances disposed thereon to abut a portion of the pier.

In certain aspects, the lower damper mount may include an upper plate, a lower plate, and a split collet interposed between the upper and lower plates.

In other aspects, the upper plate and the lower plate may each define a tapered surface thereon, the tapered surfaces of the upper and lower plates configured to abut a corresponding tapered surface of the split collet, wherein drawing the upper and lower plates towards one another causes the tapered surfaces of the upper and lower plates to abut the tapered surfaces of the split collet and effectuate a perpendicular translation of the split collet relative to the upper and lower plates.

In aspects, an interior surface of the split collet may define a plurality of ridges thereon.

In other aspects, an outer surface of the split collet may include a hoop disposed thereon, the hoop defining an elongated hole therethrough that is configured to receive a portion of a fastener therein.

In certain aspects, the upper plate may define a lower surface, the lower surface including a tab disposed thereon and extending therefrom, the tab including a post disposed thereon that is configured to be operably coupled to a portion of the strut.

In aspects, the tab may include a protuberance disposed on a lower surface thereof that is configured to be received within a corresponding bore defined in an upper surface of the lower plate to inhibit movement of the upper plate relative to the lower plate.

Various aspects and features of the present disclosure are described hereinbelow with reference to the drawings, wherein:.

The present disclosure is directed to solar tracking systems having piers defining a generally A-shaped profile. The pier may include a pair of piles either having a fixed length or an adjustable length. The piles can include a fin disposed thereon such that when the fin is driven into soil, the fin abuts an increased surface area of soil and increases the resistance of the pile from being rotated or twisted. The piles are coupled to a bearing housing assembly without utilizing fasteners. In this manner, the piles are crimped to a leg defines on the bearing housing assembly and having a plurality of annular ridges. The crimps define tabs that are received within grooves defined between each of the annular ridges to fixedly secure the bearing housing assembly to the pile. It is contemplated that the piles may have threads disposed thereon rather than fins if the soil conditions are more compacted.

The pier includes a frame having a generally A-frame profile. The frame is coupled to piles driven into the ground. The frame may include a third leg coupled to the A-frame profile via a saddle, to which a motor mount having a split configuration can be clamped to secure a slew drive to the frame. Alternatively, the frame may include a plurality of legs coupled to a center cylinder, a top plate or the like via fasteners, welding, adhesives, amongst others. It is envisioned that the frame may include a pair of A-frame portions coupled to a top plate such that the pair of A-frame portions are disposed in a perpendicular orientation to one another.

The solar tracking system may include a damper assembly having an upper damper mount coupled to a torque tube of the solar tracking system, a lower damper mount coupled to a leg of a frame of the pier, and a strut coupled to the upper damper mount at a first end portion thereof and coupled to the lower damper mount at a second, opposite end portion thereof. In examples, not part of the present invention, the damper assembly may include a pair of struts and a corresponding pair of lower damper mounts. In this manner, the upper damper mount may define a generally boomerang type configuration defining a pair of wings.

The lower damper mount may include a pair of half sections hingedly coupled to one another to permit the pair of half sections to transition from a first, open configuration to a second, closed configuration. The lower damper mount may include a plurality of protuberances disposed on an inner surface thereof to aid in inhibiting movement of the lower damper mount relative to the leg of the frame when the pair of half sections is in the second, closed configuration. It is contemplated that the lower damper mount may include a bolt inserted through both the half sections, and thereby a portion of the leg contained therein, or the inner surface may include one or more dimples rather than a plurality of protuberances.

In examples, not part of the present invention, the lower damper mount may include an upper plate, a lower plate, and a slit collet interposed therebetween. The upper and lower plates define a respective tapered surface at a center portion thereof that is configured to abut a corresponding tapered portion defined on an upper and lower portion of the split collet, such that as the upper and lower plates are drawn towards one another, the split collet is caused to translate in a perpendicular direction relative to the upper and lower mounts and clamp a portion of the fame that is disposed therein.

Referring now to the drawings, a solar tracker provided in accordance with the present disclosure is illustrated in <FIG> and generally identified by reference numeral <NUM>. The solar tracker <NUM> includes a plurality of piers <NUM> disposed in spaced relation to one another and embedded in the earth. A torque tube <NUM> extends between each adjacent pier <NUM> and is rotatably supported on each pier <NUM>. The solar tracker <NUM> includes a plurality of solar panels <NUM> supported on each respective torque tube <NUM>. The span between two adjacent piers <NUM> is referred to as a bay <NUM> and may be generally in the range of about <NUM> meters in length. A plurality of solar trackers <NUM> may be arranged in a north-south longitudinal orientation to form a solar array.

The solar tracker <NUM> includes at least one slew drive <NUM> operably coupled to the torque tube <NUM> and supported on a respective pier of the plurality of piers <NUM>. The slew drive <NUM> effectuates rotation of the torque tube <NUM>, which effectuates a corresponding rotation of the solar panels <NUM> to track the location of the sun. The solar tracker <NUM> includes a plurality of bearing housing assemblies (BHA) <NUM> disposed on respective piers of the plurality of piers <NUM>. Each of the plurality of bearing housing assemblies <NUM> is operably coupled to the torque tube <NUM> to rotatably support the torque tube <NUM> therein as the torque tube <NUM> is caused to be rotated by the slew drive <NUM>, as will be described in further detail hereinbelow.

With reference to <FIG>, a pier of the plurality of piers <NUM> is illustrated. In the interest of brevity, only one pier of the plurality of piers <NUM> will be described herein. The pier <NUM> includes a pair of piles <NUM>. Each pile of the pair of piles <NUM> is substantially similar and therefore, only one pile of the pair of piles <NUM> will be described in detail herein in the interest of brevity. The pile <NUM> includes an elongate body extending between opposed first and second end portions 22a and 22b, respectively. The elongate body defines a generally square profile, although it is contemplated that the elongate body may define any suitable profile, such as circular, rectangular, hexagonal, amongst others. An outer surface 22c of the elongate body includes fin <NUM> disposed thereon and extending longitudinally therealong. The fin <NUM> defines a generally planar profile having a generally rectangular shape and having a cross-section (e.g., thickness) that is thinner than that of the elongate body of the pile <NUM>. In this manner, the fin <NUM> easily passes through soil as the pile is driven into the ground (e.g., along a longitudinal axis). The rectangular shape of the fin <NUM> defines a surface area that abuts a corresponding surface area of soil. In this manner, as the pile is causes to be rotated, either about its longitudinal axis or transverse to its longitudinal axis, the surface area of the fin <NUM> abuts or otherwise pushes against the soil to inhibit rotation of the pile <NUM>. It is contemplated that the pile <NUM> may include any suitable number of fins <NUM>, such as one, two, three, four, amongst others and the fins <NUM> may be disposed at any location along the length of the pile <NUM>. As can be appreciated, the greater the number of fins <NUM>, and likewise, the greater the surface area of the fin or fins <NUM> the greater the resistance to rotation of the pile <NUM>. It is envisioned that the fin <NUM> may be coupled to the outer surface 22c of the elongate body of the pile <NUM> using any suitable means, such as fasteners, welding, press-fit, adhesives, amongst others.

It is envisioned that the pile <NUM> includes a tubular configuration having a hollow interior portion <NUM> defined therein and through each of the opposed first and second end portions 22a, 22b, respectively. The hollow interior portion <NUM> is configured to receive a portion of the bearing housing assembly <NUM> therein such that the portion of the bearing housing assembly <NUM> received within the hollow interior portion <NUM> may be fixedly retained therein, as will be described in further detail hereinbelow.

Although generally described as being a unitary piece, it is contemplated that the pile <NUM> may be formed from two or more pieces. In this manner, the pile <NUM> may be formed from a lower portion <NUM> and an upper portion <NUM>. The lower portion <NUM> includes an elongate body extending between opposed first and second end portions 28a and 28b, respectively. The elongate body includes a hollow interior portion 28c defined therein and extending through each of the first and second end portions 28a, 28b, respectively, although in embodiments it is envisioned that the hollow interior portion 28c may extend only a portion of the way into elongate body. The lower portion <NUM> is configured to be driven into the ground and may include the fin <NUM> disposed thereon.

The upper portion <NUM> includes an elongate body extending between opposed first and second end portions 30a and 30b, respectively. The elongate body includes a hollow interior portion 30c defined therein and extending through each of the first and second end portions 30a, 30b, respectively, although in embodiments it is envisioned that the hollow interior portion 30c may extend only a portion of the way into elongate body.

The hollow interior portion 28c of the lower portion <NUM> is configured to receive a portion of the upper portion <NUM> therein. The portion of the upper portion <NUM> received within the hollow interior portion 28c of the lower portion <NUM> is fixedly secured to the lower portion <NUM> by crimping or otherwise compressing a portion of the elongate body of the lower portion <NUM> adjacent the first end portion 30a. In this manner, the upper and lower portions <NUM>, <NUM> of the pile are coupled to one another without using fasteners, although it is contemplated that fasteners may be utilized in addition to or in lieu of crimping. As can be appreciated, in embodiments, the lower portion <NUM> may receive a portion of the upper portion <NUM> therein.

With reference to <FIG>, a bearing housing assembly of the plurality of bearing housing assemblies <NUM> is illustrated. Each of the plurality of bearing housing assemblies <NUM> is substantially similar and therefore, only one bearing housing assembly <NUM> will be described in detail herein in the interest of brevity.

The bearing housing assembly <NUM> defines a generally oval shaped outer profile including opposed first and second side surfaces <NUM> and <NUM>, respectively and an outer surface <NUM> extending between each of the first and second side surfaces <NUM>, <NUM>. An inner surface <NUM> defines a cavity extending through each of the first and second side surface <NUM>, <NUM> and is configured to receive a portion of a torque tube <NUM> therethrough. The outer surface <NUM> includes a pair of legs <NUM> and <NUM> disposed thereon and extending therefrom at a lower portion of the bearing housing assembly <NUM> and terminating at end portions 50a and 52a, respectively. Each of the pair of legs <NUM>, <NUM> is disposed adjacent a side portion of the bearing housing assembly <NUM> and is disposed at an angle or otherwise splayed outward relative to a vertical axis "Y-Y" defined through a central portion of the bearing housing assembly <NUM>, although it is contemplated that the pair of legs <NUM>, <NUM> may be disposed at any angle relative to the vertical axis "Y-Y" and may be disposed angles relative to one another. Although generally illustrated as having a square profile, it is contemplated that the pair of legs <NUM>, <NUM> may include any suitable profile, such as circular, oval, octagonal, amongst other and each of the pair of legs <NUM>, <NUM> may include the same or different profile.

The outer surface <NUM> of each of the pair of legs <NUM>, <NUM> defines a respective pair of annular ridges 50b and 52b, respectively, that cooperate to define respective annular grooves 50c and 52c therebetween. The pair of annular ridges 50b, 52b includes an outer dimension that is configured to be received within the hollow interior portion 30c of the upper portion <NUM> of the pile <NUM> adjacent the first end portion 30a thereof. It is envisioned that the pair of annular ridges 50b, 52b may be slidably received within the hollow interior portion 30c, may be a friction fit, amongst others.

With continued reference to <FIG> and with additional reference to <FIG>, the bearing housing assembly <NUM> is retained on each of the piers <NUM> by means of crimping or other similar means. In one non-limiting example, not part of the present invention, the crimping forms a pair of triangular shaped protuberances or fins <NUM> and <NUM> disposed in juxtaposed relation to one another. In this manner, an upper fin <NUM> defines a generally triangle shaped profile forming a generally horizontal profile facing away from first end portion 30a whereas a lower fin <NUM> defines a generally triangle shaped profile forming a generally horizontal profile facing towards the first end portion 30a. In this manner, the upper fin <NUM> is received within the annular grooves 50c, 52c and inhibits movement of the bearing housing assembly <NUM> away from the first end portion 30a and the lower fin <NUM> is disposed adjacent the end portions 50a, 52a and inhibits movement of the bearing housing assembly <NUM> towards the first end portion 30a, thereby inhibiting overall movement of the bearing housing assembly <NUM> relative to the piles <NUM>. In examples, not part of the present invention, it is contemplated that the fins <NUM>, <NUM> include a hypotenuse forming an angle ∝<NUM> of <NUM> degrees relative to a central axis "A-A" formed through the upper portion <NUM> of the pier <NUM>, although it is contemplated that the hypotenuse of each of the fins <NUM>, <NUM> may include any suitable angle and may be the same or different for each of the fins <NUM>, <NUM>.

With reference to <FIG>, it is envisioned that the bearing housing assembly <NUM> may include a single leg <NUM> disposed on a lower portion of the outer surface <NUM> and generally aligned with the vertical axis "Y-Y. " Although generally illustrated as having three annular ridges 70a, 70b, and 70c, it is contemplated that the leg <NUM> may include any suitable number of annular ridges, such as one, two, four, amongst others. As can be appreciated, the number of annular grooves 70d formed between each of the annular ridges 70a, 70b, 70c, etc. will coincide with the number of annular ridges, and likewise, the number of crimps will likewise vary.

With reference to <FIG> and <FIG>, it is envisioned that the upper portion <NUM> of the piers <NUM> may be coupled a frame <NUM> having a pair of screw piles <NUM> and a cross member <NUM>. Each of the screw piles <NUM> is substantially similar and therefore only one screw pile <NUM> will be described in detail herein in the interest of brevity. The screw pile <NUM> includes an elongate body having an outer surface 82a extending between opposed first and second end portions 82b and 82c, respectively. The elongate body includes a hollow interior portion (not shown) extending through each of the first and second end portions 82b, 82c, although in examples, not part of the present invention, it is contemplated that the hollow interior portion may not extend through the second end portion, thereby inhibiting the ingress of soil or other contaminants as the screw pile <NUM> is driven into the soil. The outer surface 82a of the screw pile <NUM> includes a plurality of threads <NUM> disposed thereon extending from adjacent the second end portion 82c and towards the first end portion 82b. As can be appreciated, the plurality of threads <NUM> engage the soil as the screw pile <NUM> is rotated. In this manner, as the screw pile <NUM> is rotated in a first direction, the plurality of threads <NUM> engage the soil and cause the screw pile <NUM> to be driven or otherwise embedded within the soil. Rotation of the screw pile <NUM> in a second, opposite direction, causes the screw pile to be removed or otherwise removed from the soil. It is envisioned that the plurality of threads <NUM> may be coupled to the outer surface 82a of the screw pile <NUM> using any suitable means, such as welding, adhesives, mechanical means (roll forming, etc.), amongst others.

The screw pile <NUM> includes a telescoping member <NUM> that is slidably received within the hollow interior portion (not shown) of the screw pile <NUM>, such that the telescoping member <NUM> may slide into and out of the hollow interior portion of the screw pile to adjust the overall length of the screw pile <NUM>. In this manner, if a lower height above grade (e.g., above the soil) is desired, the telescoping member <NUM> may be slid further into the screw pile <NUM>. Conversely, if a greater height above grade is desired, the telescoping member <NUM> may be slid out of the screw pile <NUM> to reveal more of the telescoping member <NUM> and thereby increase the overall length of the screw pile <NUM>. Once a desired overall length of the screw pile <NUM> is achieved, the telescoping member <NUM> may be coupled to the screw pile <NUM> using any suitable means, such as crimping, fasteners, rivets, welding, adhesive, etc..

The cross member <NUM> extends between each of the pair of screw piles <NUM> and is coupled thereto using any suitable means, such as fasteners, rivets, welding, adhesives, amongst others. The cross member <NUM> provides a platform to which the second end portion 30b of each of the upper portions <NUM> of the piers <NUM> may be coupled to rigidly support the bearing housing assembly <NUM>, and thereby the solar panels <NUM>. It is envisioned that the second end portion 30b of the upper portions <NUM> may be coupled to the cross member <NUM> using any suitable means, such as fasteners, welding, adhesives, amongst others.

Turning to <FIG>, another embodiment of a pier is illustrated and generally identified by reference numeral <NUM>. The pier <NUM> is formed from a tube forming a generally "A" profile. In this manner, the pier <NUM> defines a pair of legs <NUM> and a crown <NUM> at a center portion thereof. Each of the pair of legs <NUM> terminates at a mounting plate <NUM> that is coupled thereto using any suitable means, such as fasteners, welding, adhesives, amongst others. The pier <NUM> is formed from a unitary piece (e.g., a length of tube or pipe) that has been bent or otherwise formed into the generally "A" profile. In embodiments, the pier <NUM> may be formed from multiple pieces that have been coupled to one another by means of welding, adhesives, fasteners, amongst others.

Although generally illustrated as being linear, it is contemplated that the pair of legs <NUM> may include a bend 92a (<FIG>) formed thereon adjacent the mounting plate <NUM> such that the pair of legs <NUM> intersect the mounting plate <NUM> at a generally perpendicular angle thereto. In embodiments, the pier <NUM> may not include a mounting plate <NUM>, and rather, each leg of the pair of legs <NUM> may include mounting holes 92b (<FIG>) formed therethrough adjacent an end portion located opposite to the crown <NUM>.

It is envisioned that the mounting plate <NUM> may include any suitable profile, and in embodiments may include a circular profile with mounting holes 96a having an arcuate profile (<FIG>), a square profile with mounting holes 96a having an arcuate profile (<FIG>), a rectangular profile with mounting holes 96a having a linear profile and disposed in a vertical orientation (e.g., aligned in the same direction) (<FIG>), a circular profile with mounting holes 96a having a linear profile (<FIG>), an octagonal profile with mounting holes 96a having a linear profile (<FIG>), or a rectangular profile with mounting holes 96a having a linear profile and oriented in a cross configuration (e.g., the mounting holes 96a located adjacent the sides thereof angled towards an interior portion of the mounting plate <NUM>) (<FIG>). Although generally described as including the above-mentioned shapes, it is envisioned that the mounting plate <NUM> may include any suitable profile and have mounting holes 96a having any suitable profile and disposed in any suitable arrangement thereon.

Although generally illustrated as having a circular profile, it is contemplated that the pier <NUM> may include any suitable profile, such as square, oval, rectangular, octagonal, amongst others. The pier <NUM> includes a support bracket <NUM> defining a generally U-shaped or saddle profile defining an upper surface 98a and a pair of legs 98b and 98c, respectively, defining a respective channel (not shown) therebetween that is configured to receive a portion of the crown <NUM> therein. The support bracket <NUM> is coupled to the crown <NUM> using any suitable means, such as fasteners, welding, adhesives, amongst others.

The bearing housing assembly <NUM> is coupled to the support bracket <NUM> using a fastener <NUM> (e.g., nut and bolt) and a pair of inclined washers <NUM> that enable the fastener <NUM> to be secured to the bearing housing assembly <NUM> and the support bracket <NUM> at an angle relative thereto to clear or otherwise avoid interference with the pier <NUM>. In one non-limiting embodiment, the fastener is a bobtail pin and a corresponding bobtail collar, although it is contemplated that any suitable fastener may be utilized.

With continued reference to <FIG>, it is envisioned that the pier <NUM> may include a cross-member <NUM> extending between each of the pair of legs <NUM> and coupled thereto using any suitable means, such as fasteners, welding, adhesives, amongst others. As can be appreciated, the cross-member <NUM> inhibits splaying or spreading apart of the pair of legs <NUM> as a load is placed on the crown <NUM>.

With reference to <FIG>, another example of a pier, not part of the present invention, is illustrated and generally identified by reference numeral <NUM>. The pier <NUM> is substantially similar to the pier <NUM>, and therefore only the differences therebetween will be described in detail herein in the interest of brevity. The pier <NUM> includes a third leg <NUM> having a saddle 112a disposed in a generally horizontal configuration and an elongate member 112b extending therefrom at an obtuse angle relative to an axis "B-B" defined through a center portion of the saddle 112a. In this manner, the third leg <NUM> causes the pier <NUM> to have a tripod or three-legged stool configuration. The elongate member 112b includes a flange or mounting bracket <NUM> disposed at an end portion thereof that is opposite the saddle 112a to enable the third leg to be secured to a portion of a pier driven into the soil.

The pier <NUM> includes a motor bracket <NUM> that is configured to be selectively coupled to the saddle 112a at a first portion thereof and selectively coupled to a slew drive (not shown) or other motor utilized in the solar tracker <NUM> to effectuate movement of the torque tube <NUM> and thereby, the solar panels <NUM>. The motor bracket <NUM> includes first half portion <NUM> and a second half portion <NUM> disposed in juxtaposed relation thereto. Each of the first and second half portions <NUM>, <NUM> is substantially similar and therefore only the first half portion <NUM> will be described in detail herein in the interest of brevity.

The first half portion <NUM> includes an upper plate 122a and a lower plate 122b disposed thereon and forming a generally right angle with respect thereto. In this manner, the upper plate 122a and lower plate 122b define a generally L-shaped profile. The lower plate 122b extends away from the upper plate 122a and includes a hook shaped portion 122c disposed at an end portion 122d thereof. The hook shaped portion 122c defines an arcuate profile that is configured to receive a portion of the saddle 112a therein. It is contemplated that the hook shaped portion 122c may include any suitable profile, such as circular, oval, hexagonal, amongst others, and may be the same or different from the profile of the saddle 112a.

As can be appreciated, the first and second half portions <NUM> and <NUM> cooperate to clamp onto or otherwise compress on the saddle 112a within the respective hook shaped portions 122c, 124c. It is envisioned that the first and second half portions <NUM> and <NUM> may be secured to the saddle 112a using any suitable means, such as fasteners, welding, adhesives, amongst others. In this manner, the orientation of the motor bracket <NUM> relative to the saddle 112a may be set before clamping or otherwise fixing the motor bracket <NUM> to the saddle 112a.

Turning to <FIG>, another example of a pier, not part of the present invention, is illustrated and generally identified by reference numeral <NUM>. The pier <NUM> includes a plurality of legs <NUM>, a barrel <NUM>, and a motor plate <NUM>. The plurality of legs <NUM> each include an elongate body extending between opposed first and second end portions 132a and 132b, respectively. The second end portion 132b is coupled to a flange <NUM> using any suitable means, such as fasteners, welding, adhesives, amongst others. The elongate body includes a bend adjacent the first end portion 132a to define a generally horizontal leg 132c. It is contemplated that the plurality of legs <NUM> may be formed from a unitary body or may be formed from a plurality of elements that are joined to one another using any suitable means, such as fasteners, welding, adhesives, or the like. In one non-limiting example, not part of the present invention, the plurality of legs <NUM> is formed from a unitary component that is bent or otherwise formed into a generally L-shaped profile.

The horizontal leg 132c of each of the plurality of legs <NUM> is coupled to a portion of the barrel <NUM> such that the barrel <NUM> forms a generally perpendicular angle with respect to the horizontal leg 132c (e.g., the barrel <NUM> is maintained in a generally vertical position). Each of the plurality of legs <NUM> is coupled to the barrel <NUM> in a spaced apart fashion (e.g., radially spaced apart at an angle relative to one another), and in one non-limiting example, not part of the present invention, three legs <NUM> are coupled to the barrel <NUM> at an angle of <NUM> degrees relative to one another to form a generally tripod type configuration, although it is contemplated that any suitable angle may be formed between the plurality of legs <NUM> and the angle formed between adjacent legs <NUM> may be the same or different than angles formed between other adjacent legs <NUM>. As can be appreciated, any number of legs <NUM> may be utilized, such as four, five, six, etc..

The motor plate <NUM> defines a generally planar surface and is coupled to an upper portion of the barrel <NUM> such that the motor plate <NUM> defines a generally perpendicular angle relative thereto. It is contemplated that the motor plate <NUM> may be coupled to the barrel <NUM> using any suitable means, such as fasteners, welding, adhesives, amongst others. The motor plate <NUM> is configured to be selectively coupled to a slew drive (not shown) or other motor utilized in the solar tracker <NUM> to effectuate movement of the torque tube <NUM> and thereby, the solar panels <NUM>.

With reference to <FIG>, yet another example of a pier, not part of the present invention, is illustrated and generally identified by reference numeral <NUM>. The pier <NUM> includes a plurality of legs <NUM>, a motor plate <NUM>, and a plurality of flanges <NUM> corresponding to each of the plurality of legs <NUM>. Each of the plurality of legs <NUM> includes an elongate body extending between opposed first and second end portions 142a and 142b, respectively. The elongate body of the plurality of legs <NUM> defines a generally linear profile, although it is contemplated that the elongate body of the plurality of legs <NUM> may include any suitable profile. The first end portion 142a of the plurality of legs <NUM> is coupled to a portion of the motor plate <NUM> such that the plurality of legs <NUM> define an angle relative thereto (e.g., disposed in a splayed or spread apart configuration). In this manner, the motor plate <NUM> is maintained in a generally horizontal configuration while the plurality of legs <NUM> extend therefrom at an outward angle. It is envisioned that the plurality of legs <NUM> is coupled to the motor plate <NUM> using any suitable means, such as fasteners, welding, adhesives, amongst others. Each of the plurality of legs <NUM> is coupled to the motor plate <NUM> in a spaced apart fashion (e.g., radially spaced apart at an angle relative to one another), and in one non-limiting example, not part of the present invention, three legs <NUM> are coupled to the motor plate at an angle of <NUM> degrees relative to one another to form a generally tripod type configuration, although it is contemplated that any suitable angle may be formed between the plurality of legs <NUM> and the angle formed between adjacent legs <NUM> may be the same or different than angles formed between other adjacent legs <NUM>. As can be appreciated, any number of legs <NUM> may be utilized, such as four, five, six, etc..

The motor plate <NUM> is configured to be selectively coupled to a slew drive (not shown) or other motor utilized in the solar tracker <NUM> to effectuate movement of the torque tube <NUM> and thereby, the solar panels <NUM>. The second end portion 142b of the plurality of legs is coupled to a respective flange <NUM> using any suitable means, such as fasteners, welding, adhesives, amongst others. The plurality of flanges <NUM> is configured to couple the pier <NUM> to a portion of a pier driven into the soil.

Turning to <FIG>, still another example of a pier, not part of the present invention, is illustrated and generally identified by reference numeral <NUM>. The pier <NUM> includes a first A-frame <NUM>, a second A-frame <NUM>, and a motor bracket <NUM>. Each of the first and second A-frames <NUM> is substantially similar to the pier <NUM>, and therefore, the first and second A-frames <NUM>, <NUM> will not be described in detail herein in the interest of brevity.

The motor bracket <NUM> includes a top plate <NUM>, a first support plate <NUM>, and a pair of second support plates <NUM>. The top plate <NUM> defines a generally planar profile including a top surface 158a, an opposed, bottom surface 158b, opposed first and second end surfaces 158c and 158d extending between the top and bottom surfaces 158a, 158b, and opposed side surfaces 158e and 158f extending between each of the opposed first and second end surfaces 158c, 158d and the top and bottom surfaces 158a, 158b. The top plate <NUM> is configured to be selectively coupled to a slew drive (not shown) or other motor utilized in the solar tracker <NUM> to effectuate movement of the torque tube <NUM> and thereby, the solar panels <NUM>.

The first support plate <NUM> is disposed on the bottom surface 158b of the top plate <NUM> adjacent the first end surface 158c and extends at a generally right angle therefrom. The first support plate <NUM> defines a generally rectangular configuration and includes a generally planar profile, although it is contemplated that the first support plate <NUM> may include any suitable configuration, such as square, trapezoidal, circular, oval, amongst others. It is envisioned that the first support plate <NUM> may be coupled to the top plate <NUM> using any suitable means, such as fasteners, welding, adhesives, or the like.

The pair of second support plates <NUM> is disposed on the bottom surface 158b of the top plate <NUM> at a substantially center portion of the top plate <NUM> and extending at a generally right angle therefrom. The pair of second support plates <NUM> is disposed at a generally perpendicular angle relative to the first support plate <NUM> to form a generally T-shaped profile, although it is contemplated that the pair of second support plates <NUM> may be disposed at any angle relative to the first support plate <NUM>. The pair of second support plates <NUM> are disposed in spaced relation to one another to form a first channel <NUM> therebetween and are disposed in spaced relation to the first support plate <NUM> to form a second channel <NUM> therebetween. Each of the pair of second support plates <NUM> defines a generally rectangular configuration and includes a generally planar profile, although it is contemplated that the one or both of the pair of second support plates <NUM> may include any suitable configuration, such as square, trapezoidal, circular, oval, amongst others. It is envisioned that the pair of second support plates <NUM> may be coupled to the top plate <NUM> using any suitable means, such as fasteners, welding, adhesives, or the like.

With continued reference to <FIG>, a crown of the first A-frame <NUM> is received within the second channel <NUM> of the motor bracket <NUM> and a crown of the second A-frame <NUM> is received within the first channel <NUM> of the motor bracket <NUM> and each is coupled to the respective first support plate <NUM> and pair of second support plates <NUM> using any suitable means, such as fasteners, welding, adhesives, amongst others. In this manner, the first and second A-frames <NUM>, <NUM> are disposed in a T-shaped configuration, although it is contemplated that he first and second A-frames <NUM>, <NUM> may be disposed in any suitable configuration depending upon the orientation of the first support plate <NUM> relative to the pair of second support plates <NUM>.

With reference to <FIG>, a damper assembly for use with the solar tracker <NUM> is illustrated and generally identified by reference numeral <NUM>. The damper assembly <NUM> includes a pair of struts <NUM>, an upper damper mount <NUM>, and a pair of lower damper mounts <NUM>.

The upper damper mount <NUM> includes first and second side surfaces <NUM>, <NUM> disposed in spaced relation to one another and an outer surface <NUM> extending between each of the first and second side surfaces <NUM>, <NUM>. The upper damper mount <NUM> includes a pair of wings <NUM>, <NUM> disposed in spaced relation to one another such that the upper damper mount <NUM> defines a generally arcuate or boomerang type configuration extending between respective first and second end portions 218a and 220a, respectively, although it is contemplated that the upper damper mount <NUM> may define any suitable configuration, such as planar, amongst others. In one non-limiting example, not part of the present invention, each of the pair of wings <NUM>, <NUM> form an angle ∝<NUM> of <NUM>-degrees with respect to a horizontal axis C-C, although it is envisioned that any suitable angle may be formed relative to the horizontal axis C-C.

An inner surface <NUM> defines a groove <NUM> extending through each of the first and second side surfaces <NUM>, <NUM> and only one portion of the outer surface <NUM>. In this manner, the groove <NUM> defines a generally U-shaped profile, although it is contemplated that the groove <NUM> may define any suitable profile, such as square, rectangular, V-shaped, hexagonal, amongst others. The groove <NUM> is configured to receive a portion of a torque tube <NUM> therein such that the torque tube <NUM> may be selectively coupled thereto using a U-bolt <NUM> or other suitable bracket or fastener. In examples, not part of the present invention, the upper damper mount <NUM> may include a pair of tabs <NUM> extending from one or the first or second side surfaces <NUM>, <NUM> that is configured to selectively couple the upper damper mount <NUM> to a respective bearing housing assembly <NUM> and provide additional rigidity.

The upper damper mount <NUM> includes a pair of posts <NUM> and <NUM>, respectively, disposed on each respective wing of the pair of wings <NUM>, <NUM> adjacent each respective first and second end portions 218a, 220a. The pair of posts <NUM>, <NUM> is configured to be selectively coupled to a respective strut of the pair of structs <NUM> using any suitable means, such as fasteners, welding, adhesives, amongst others. In one non-limiting example, not part of the present invention, the pair of posts <NUM>, <NUM> is a bolt coupled to the upper damper mount.

With reference to <FIG>, the pair of lower damper mounts <NUM> is substantially similar, and therefore, only one lower damper mount <NUM> will be described in detail herein in the interest of brevity. The lower damper mount <NUM> defines a generally clamshell configuration having first and second half-sections <NUM> and <NUM>, respectively. The first and second half-sections <NUM>, <NUM> each include a tubular center portion 242a and 244a, respectively, and a planar tab portion 242b and 244b, respectively, coupled to each respective tubular center portion 242a, 244a. Although generally described as being separate components, it is contemplated that the tubular center portions 242a, 244a and the planar tab portions 242b, 244b may be formed from a unitary component by means of forming (e.g., bending or the like). The planar tab portions 242b, 244b cooperate to enable the first and second half-sections <NUM>, <NUM> to be clamped together or otherwise maintained in a second, closed position by means of fasteners, welding, adhesives, amongst others.

An interior surface 242c and 244c of each of the tubular center portions 242a, 244a includes a plurality of protuberances 242d, 244d disposed thereon. The plurality of protuberances 242d, 244d cooperate to provide increased clamping force on a portion of a pile <NUM> and inhibit rotation, translation, or relative movement of the lower damper mount <NUM> relative thereto. In examples, not part of the present invention, the interior surfaces 242c, 244c may not include a plurality of protuberances, but rather, one or both of the interior surfaces 242c, 244c may include a single dimple 242f disposed thereon (<FIG>) to inhibit rotation and translation of the lower damper mount <NUM> relative to the pile <NUM> or in examples, not part of the present invention, may include a pair of dimples 242f, 244f, each disposed on a respective interior surface 242c, 244c (<FIG>).

Each of the first and second half sections <NUM>, <NUM> is joined together using a hinge <NUM> or other suitable formation (e.g., a plurality of interlocking cylinders) including a hinge pin <NUM> selectively retained therein to enable relative motion of the first and second half sections <NUM>, <NUM> from a first, open configuration, to a second, closed or clamped configuration. In one non-limiting example, not part of the present invention, the hinge pin <NUM> is a bolt including a nut, although it is contemplated that any suitable means may be utilized to hingedly couple the first and second half sections <NUM>, <NUM> to one another.

An outer surface 242e, 244e of one or both of the tubular center portions 242a, 244a of the first and second half sections <NUM>, <NUM> includes a post <NUM> disposed thereon and extending therefrom. The post <NUM> is configured to be selectively coupled to a portion of a respective strut of the pair of struts <NUM> such that the strut <NUM> is coupled to the upper damper mount <NUM> at a first end portion thereof and to the lower damper mount <NUM> at a second end portion thereof. In this manner, rotation of the torque tube <NUM> effectuates a corresponding rotation of the upper damper mount <NUM>, which causes the strut <NUM> to compress or extend between the upper damper mount <NUM> and the lower damper mount <NUM>, depending on the direction of rotation of the torque tube <NUM>. It is envisioned that the post <NUM> may be a bolt, threaded rod, stud, amongst others. In one non-limiting example, not part of the present invention, the post <NUM> may be replaced with a bolt that passes entirely through both of the first and second half sections <NUM>, <NUM> (<FIG>). In this example, not part of the present invention, the interior surface 242c and 244c of each of the tubular center portions 242a, 244a may not include the plurality of protuberances 242d, 244d, as the bolt <NUM> will pass through a portion of the pile <NUM> to inhibit rotation and translation of the lower damper mount <NUM> relative thereto.

With reference to <FIG>, still another example, not part of the present invention, of a lower damper mount is illustrated and generally identified by reference numeral <NUM>. The lower damper mount <NUM> includes an upper plate <NUM>, a lower plate <NUM>, and a split collet <NUM>.

The upper plate <NUM> defines a generally planar profile having opposed upper and lower surfaces 262a and 262b, respectively, and an outer surface 262c extending therebetween. An inner surface <NUM> defines a bore <NUM> through each of the upper and lower surfaces 262a, 262b that is configured to receive a portion of a pile <NUM> therethrough. The inner surface <NUM> defines a tapered profile extending from a center portion of the upper plate <NUM> towards the outer surface 262c as the inner surface <NUM> transitions from the upper surface 262a to the lower surface 262b. The upper plate <NUM> includes a tab <NUM> disposed on the lower surface 262b adjacent the outer surface 262c and extending from the lower surface 262b and terminating at an end portion 268a. It is envisioned that the tab may be formed as a unitary component with the upper plate <NUM> (e.g., machined, folded, etc.) or may be formed as a separate component that is coupled to the upper plate <NUM> using any suitable means, such as fasteners, welding, adhesives, amongst others. The tab <NUM> includes one or more protuberances 268b disposed on the end portion 268a and extending therefrom. The protuberances 268b are configured to engage a corresponding feature on the lower plate <NUM> to maintain alignment of the upper and lower plates <NUM>, <NUM>, as will be described in further detail hereinbelow.

The tab <NUM> includes a post <NUM> disposed thereon that is configured to be selectively coupled to a portion of a strut <NUM>. It is envisioned that the post <NUM> may be a bolt, threaded rod, stud, etc. and may be coupled to the tab using any suitable means, such as threadably engagement, welding, adhesives, amongst others. In one non-limiting example, not part of the present invention, the post <NUM> is integrally formed (e.g., machined) with the tab <NUM>.

The lower plate <NUM> defines a generally planar profile having opposed upper and lower surfaces 272a and 272b, respectively, and an outer surface 272c extending therebetween. An inner surface <NUM> defines a bore <NUM> through each of the upper and lower surfaces 272a, 272b that is configured to receive a portion of a pile <NUM> therethrough. The inner surface <NUM> defines a tapered profile extending from adjacent the outer surface 272c towards a center portion of the lower plate <NUM> as the inner surface <NUM> transitions from the upper surface 272a to the lower surface 272b (e.g., in an opposite direction to the inner surface <NUM> of the upper plate <NUM>). The tapered profiles of the inner surfaces <NUM>, <NUM> of the upper and lower plates <NUM>, <NUM>, respectively, cooperate to cause the split collet <NUM> to be driven towards a center portion of the upper and lower plates <NUM>, <NUM> and clamp or otherwise inhibit movement of the lower damper mount <NUM> relative to the pile <NUM> captured therein, as will be described in further detail hereinbelow.

The upper surface 272a defines one or more dimples <NUM> therein corresponding to the one or more protuberances 268b of the upper plate <NUM>, such that as the upper plate <NUM> is placed in relation to the lower plate <NUM>, the one or more protuberances 268b are received within the corresponding one or more dimples <NUM> to inhibit translation or rotation of the upper and lower plates <NUM>, <NUM> relative to one another. Although generally described as being a dimple, it is contemplated that the one or more dimples <NUM> may pass entirely through both the upper and lower surfaces 272a, 272b of the lower plate <NUM>.

Continuing with <FIG>, the split collet <NUM> include first and second half sections <NUM> and <NUM>, respectively, each of which is substantially similar one another, and therefore, only one half section <NUM> will be described in detail herein in the interest of brevity. The half section <NUM> defines a generally arcuate profile extending between opposed upper and lower surfaces 282a, 282b, opposed first and second side surfaces 282c and 282d extending between the upper and lower surfaces 282a, 282b, and opposed inner and outer end surfaces 282e and 282f extending between each of the upper and lower surfaces 282a, 282b and the first and second side surfaces 282c, 282d. The outer surface 282f includes respective first and second tapered portions <NUM> and <NUM> adjacent the upper surface 282a and the lower surface 282b, respectively. The first tapered portion <NUM> tapers from position adjacent the inner surface 282e towards the outer surface 282f in a direction from the upper surface 282a towards the lower surface 282b. The second tapered portion <NUM> tapers from the outer surface 282f to a position adjacent the inner surface 282e in a direction from the upper surface 282a towards the lower surface 282b. In this manner, the half section <NUM> includes a thickness that is thinner adjacent each of the upper and lower surfaces 282a, 282b and thicker at a center portion thereof.

The first and second tapered portions <NUM>, <NUM> cooperate with the respective inner surfaces <NUM>, <NUM> of the upper and lower plates <NUM>, <NUM>, such that as the upper and lower plates <NUM>, <NUM> are drawn towards one another, the tapered profiles of the inner surfaces <NUM>, <NUM> of the upper and lower plates abut the tapered portions <NUM>, <NUM>, respectively, to cause the half section <NUM> to translate towards a center portion of the lower damper mount <NUM> and clamp or otherwise compress against a portion of the pile <NUM> disposed therein to inhibit movement of the lower damper mount <NUM> relative to the pile <NUM>.

The inner surface 282e of the half section <NUM> includes a plurality of ribs or crenellations <NUM> thereon. As can be appreciated, the crenellations <NUM> engage and outer surface of the pile <NUM> to help mitigate movement of the lower damper mount <NUM> relative to the pile <NUM> when the pile <NUM> is received between the split collet <NUM>. It is envisioned that the crenellations <NUM> may be integrally formed with the half section <NUM>, may be a separate component that is coupled to the inner surface 282e of the half section using fasteners, welding, adhesives, amongst others, or may be otherwise captured using pins or the like.

The outer surface 282f of the half section <NUM> includes a pair of hoops <NUM> disposed thereon that is configured to slidaby receive a pair of fasteners <NUM>. The pair of hoops <NUM> define an elongated hole 288a therein to permit the half section <NUM> to translate in a perpendicular direction relative to the fastener <NUM>. In this manner, the pair of fasteners pass through a portion of the upper plate <NUM>, through the elongated holes 288a of the pair of hoops <NUM>, and through a portion of the lower plate <NUM> to align or otherwise maintain an orientation of the upper plate <NUM>, split collet <NUM>, and lower plate <NUM> relative to one another. The pair of fasteners <NUM> cooperate to draw the lower plate <NUM> towards the upper plate <NUM> when rotated in a first direction, which causes the tapered inner surfaces <NUM>, <NUM> of the upper and lower plates <NUM>, <NUM> abut the tapered portions <NUM>, <NUM> of the split collet, respectively, to cause the half section <NUM> to translate towards a center portion of the lower damper mount <NUM> and clamp or otherwise compress against a portion of the pile <NUM> disposed therein to inhibit movement of the lower damper mount <NUM> relative to the pile <NUM>. Although generally illustrated as having a nut or other suitable component to threadably engage the fastener <NUM>, it is envisioned that the lower plate <NUM> may include a corresponding pair of threaded holes to threadably engage a portion of the pair of fasteners. It is envisioned that the lower damper mount <NUM> may include any number of fasteners, such as three, four, five, etc..

Claim 1:
A pier (<NUM>; <NUM>; <NUM>; <NUM>; <NUM>; <NUM>) for a solar tracker (<NUM>), comprising:
a bearing housing assembly (<NUM>);
a frame (<NUM>), the frame defining an A-profile having a pair of legs (<NUM>; <NUM>; <NUM>; <NUM>; <NUM>; <NUM>; <NUM>) and a crown (<NUM>) at a center portion thereof;
a support bracket (<NUM>), the support bracket (<NUM>) coupled to a portion of the crown (<NUM>) of the frame (<NUM>) at a first portion thereof and coupled to a portion of the bearing housing assembly (<NUM>) at a second portion thereof; and
a fastener (<NUM>), the fastener (<NUM>) coupling the bearing housing assembly (<NUM>) to the support bracket (<NUM>), characterised in that the fastener (<NUM>) includes a pair of inclined washers (<NUM>), the pair of inclined washers causing the fastener (<NUM>) to engage the bearing housing assembly (<NUM>) and the support bracket (<NUM>) at an angle relative thereto.