SUPPORT FRAMES FOR SOLAR TRACKERS
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 mounting bracket, the mounting 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.
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The present disclosure is a divisional of U.S. patent application Ser. No. 17/475,011, filed on Sep. 14, 2021, which claims the benefit of, and priority to, U.S. Provisional Patent Application Ser. No. 63/235,272, filed on Aug. 20, 2021, and U.S. Provisional Patent Application Ser. No. 63/078,228, filed on Sep. 14, 2020, the entire content of each of which is hereby incorporated by reference herein.
BACKGROUND Technical FieldThe present disclosure relates to solar power generation systems, and more particularly, to support structures for solar arrays within a solar tracking system.
Background of Related ArtOne 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. 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.
SUMMARYIn accordance with an aspect of the present disclosure, 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 mounting bracket, the mounting 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.
In aspects, the pier may include a fastener, the fastener coupling the bearing housing assembly to the mounting bracket.
In other aspects, the fastener may include an inclined washer, the inclined washing causing the fastener to engage the bearing housing assembly and the mounting bracket at an angle relative thereto.
In certain aspects, the fastener may include a pair of inclined washers, the pair of inclined washers causing the fastener to engage the bearing housing assembly and the mounting 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, a pier for a solar tracing 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 plurality of legs and the remaining plurality of legs, and a motor mount including first and second half sections, the first and second half sections configured to receive a portion of the saddle therebetween.
In aspects, each of the first and second half sections of the motor mount may define a hook shaped portion that is configured to receive a portion of the saddle therein.
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 embodiment of the present disclosure, 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.
In embodiments, the pier may include 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 embodiments, 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 embodiments, 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
The solar tracker 10 includes at least one slew drive 18 operably coupled to the torque tube 12 and supported on a respective pier of the plurality of piers 20. The slew drive 18 effectuates rotation of the torque tube 12, which effectuates a corresponding rotation of the solar panels 14 to track the location of the sun. The solar tracker 10 includes a plurality of bearing housing assemblies (BHA) 40 disposed on respective piers of the plurality of piers 20. Each of the plurality of bearing housing assemblies 40 is operably coupled to the torque tube 12 to rotatably support the torque tube 12 therein as the torque tube 12 is caused to be rotated by the slew drive 18, as will be described in further detail hereinbelow.
With reference to
It is envisioned that the pile 22 includes a tubular configuration having a hollow interior portion 26 defined therein and through each of the opposed first and second end portions 22a, 22b, respectively. The hollow interior portion 26 is configured to receive a portion of the bearing housing assembly 40 therein such that the portion of the bearing housing assembly 40 received within the hollow interior portion 26 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 22 may be formed from two or more pieces. In this manner, the pile 22 may be formed from a lower portion 28 and an upper portion 30. The lower portion 28 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 28 is configured to be driven into the ground and may include the fin 24 disposed thereon.
The upper portion 30 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 28 is configured to receive a portion of the upper portion 30 therein. The portion of the upper portion 30 received within the hollow interior portion 28c of the lower portion 28 is fixedly secured to the lower portion 28 by crimping or otherwise compressing a portion of the elongate body of the lower portion 28 adjacent the first end portion 30a. In this manner, the upper and lower portions 28, 30 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 28 may receive a portion of the upper portion 30 therein.
With reference to
The bearing housing assembly 40 defines a generally oval shaped outer profile including opposed first and second side surfaces 42 and 44, respectively and an outer surface 46 extending between each of the first and second side surfaces 42, 44. An inner surface 48 defines a cavity extending through each of the first and second side surface 42, 44 and is configured to receive a portion of a torque tube 12 therethrough. The outer surface 46 includes a pair of legs 50 and 52 disposed thereon and extending therefrom at a lower portion of the bearing housing assembly 40 and terminating at end portions 50a and 52a, respectively. Each of the pair of legs 50, 52 is disposed adjacent a side portion of the bearing housing assembly 40 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 40, although it is contemplated that the pair of legs 50, 52 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 50, 52 may include any suitable profile, such as circular, oval, octagonal, amongst other and each of the pair of legs 50, 52 may include the same or different profile.
The outer surface 46 of each of the pair of legs 50, 52 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 30 of the pile 22 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
With reference to
With reference to
The screw pile 82 includes a telescoping member 88 that is slidably received within the hollow interior portion (not shown) of the screw pile 82, such that the telescoping member 88 may slide into and out of the hollow interior portion of the screw pile to adjust the overall length of the screw pile 82. In this manner, if a lower height above grade (e.g., above the soil) is desired, the telescoping member 88 may be slid further into the screw pile 82. Conversely, if a greater height above grade is desired, the telescoping member 88 may be slid out of the screw pile 82 to reveal more of the telescoping member 88 and thereby increase the overall length of the screw pile 82. Once a desired overall length of the screw pile 82 is achieved, the telescoping member 88 may be coupled to the screw pile 82 using any suitable means, such as crimping, fasteners, rivets, welding, adhesive, etc.
The cross member 84 extends between each of the pair of screw piles 82 and is coupled thereto using any suitable means, such as fasteners, rivets, welding, adhesives, amongst others. The cross member 84 provides a platform to which the second end portion 30b of each of the upper portions 30 of the piers 22 may be coupled to rigidly support the bearing housing assembly 40, and thereby the solar panels 14. It is envisioned that the second end portion 30b of the upper portions 30 may be coupled to the cross member 84 using any suitable means, such as fasteners, welding, adhesives, amongst others.
Turning to
Although generally illustrated as being linear, it is contemplated that the pair of legs 92 may include a bend 92a (
It is envisioned that the mounting plate 96 may include any suitable profile, and in embodiments may include a circular profile with mounting holes 96a having an arcuate profile (
Although generally illustrated as having a circular profile, it is contemplated that the pier 90 may include any suitable profile, such as square, oval, rectangular, octagonal, amongst others. The pier 90 includes a support bracket 98 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 94 therein. The support bracket 98 is coupled to the crown 94 using any suitable means, such as fasteners, welding, adhesives, amongst others.
The bearing housing assembly 40 is coupled to the support bracket 98 using a fastener 100 (e.g., nut and bolt) and a pair of inclined washers 102 that enable the fastener 100 to be secured to the bearing housing assembly 40 and the support bracket 98 at an angle relative thereto to clear or otherwise avoid interference with the pier 90. 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
With reference to
The pier 110 includes a motor bracket 120 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 10 to effectuate movement of the torque tube 12 and thereby, the solar panels 14. The motor bracket 120 includes first half portion 122 and a second half portion 124 disposed in juxtaposed relation thereto. Each of the first and second half portions 122, 124 is substantially similar and therefore only the first half portion 122 will be described in detail herein in the interest of brevity.
The first half portion 122 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 122 and 124 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 122 and 124 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 120 relative to the saddle 112a may be set before clamping or otherwise fixing the motor bracket 120 to the saddle 112a.
Turning to
The horizontal leg 132c of each of the plurality of legs 132 is coupled to a portion of the barrel 136 such that the barrel 136 forms a generally perpendicular angle with respect to the horizontal leg 132c (e.g., the barrel 136 is maintained in a generally vertical position). Each of the plurality of legs 132 is coupled to the barrel 136 in a spaced apart fashion (e.g., radially spaced apart at an angle relative to one another), and in one non-limiting embodiment, three legs 132 are coupled to the barrel 136 at an angle of 120 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 132 and the angle formed between adjacent legs 132 may be the same or different than angles formed between other adjacent legs 132. As can be appreciated, any number of legs 132 may be utilized, such as four, five, six, etc.
The motor plate 138 defines a generally planar surface and is coupled to an upper portion of the barrel 136 such that the motor plate 138 defines a generally perpendicular angle relative thereto. It is contemplated that the motor plate 138 may be coupled to the barrel 136 using any suitable means, such as fasteners, welding, adhesives, amongst others. The motor plate 138 is configured to be selectively coupled to a slew drive (not shown) or other motor utilized in the solar tracker 10 to effectuate movement of the torque tube 12 and thereby, the solar panels 14.
With reference to
The motor plate 144 is configured to be selectively coupled to a slew drive (not shown) or other motor utilized in the solar tracker 10 to effectuate movement of the torque tube 12 and thereby, the solar panels 14. The second end portion 142b of the plurality of legs is coupled to a respective flange 146 using any suitable means, such as fasteners, welding, adhesives, amongst others. The plurality of flanges 146 is configured to couple the pier 140 to a portion of a pier driven into the soil.
Turning to
The motor bracket 156 includes a top plate 158, a first support plate 160, and a pair of second support plates 162. The top plate 158 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 158 is configured to be selectively coupled to a slew drive (not shown) or other motor utilized in the solar tracker 10 to effectuate movement of the torque tube 12 and thereby, the solar panels 14.
The first support plate 160 is disposed on the bottom surface 158b of the top plate 158 adjacent the first end surface 158c and extends at a generally right angle therefrom. The first support plate 160 defines a generally rectangular configuration and includes a generally planar profile, although it is contemplated that the first support plate 160 may include any suitable configuration, such as square, trapezoidal, circular, oval, amongst others. It is envisioned that the first support plate 160 may be coupled to the top plate 158 using any suitable means, such as fasteners, welding, adhesives, or the like.
The pair of second support plates 162 is disposed on the bottom surface 158b of the top plate 158 at a substantially center portion of the top plate 158 and extending at a generally right angle therefrom. The pair of second support plates 162 is disposed at a generally perpendicular angle relative to the first support plate 160 to form a generally T-shaped profile, although it is contemplated that the pair of second support plates 162 may be disposed at any angle relative to the first support plate 160. The pair of second support plates 162 are disposed in spaced relation to one another to form a first channel 164 therebetween and are disposed in spaced relation to the first support plate 160 to form a second channel 166 therebetween. Each of the pair of second support plates 162 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 162 may include any suitable configuration, such as square, trapezoidal, circular, oval, amongst others. It is envisioned that the pair of second support plates 162 may be coupled to the top plate 158 using any suitable means, such as fasteners, welding, adhesives, or the like.
With continued reference to
With reference to
The upper damper mount 210 includes first and second side surfaces 212, 214 disposed in spaced relation to one another and an outer surface 216 extending between each of the first and second side surfaces 212, 214. The upper damper mount 210 includes a pair of wings 218, 220 disposed in spaced relation to one another such that the upper damper mount 210 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 210 may define any suitable configuration, such as planar, amongst others. In one non-limiting embodiment, each of the pair of wings 218, 220 form an angle ∝2 of 15-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 222 defines a groove 224 extending through each of the first and second side surfaces 212, 214 and only one portion of the outer surface 216. In this manner, the groove 224 defines a generally U-shaped profile, although it is contemplated that the groove 224 may define any suitable profile, such as square, rectangular, V-shaped, hexagonal, amongst others. The groove 224 is configured to receive a portion of a torque tube 12 therein such that the torque tube 12 may be selectively coupled thereto using a U-bolt 204 or other suitable bracket or fastener. In embodiments, the upper damper mount 210 may include a pair of tabs 226 extending from one or the first or second side surfaces 212, 214 that is configured to selectively couple the upper damper mount 210 to a respective bearing housing assembly 40 and provide additional rigidity.
The upper damper mount 210 includes a pair of posts 228 and 230, respectively, disposed on each respective wing of the pair of wings 218, 220 adjacent each respective first and second end portions 218a, 220a. The pair of posts 228, 230 is configured to be selectively coupled to a respective strut of the pair of structs 202 using any suitable means, such as fasteners, welding, adhesives, amongst others. In one non-limiting embodiment, the pair of posts 228, 230 is a bolt coupled to the upper damper mount.
With reference to
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 22 and inhibit rotation, translation, or relative movement of the lower damper mount 240 relative thereto. In embodiments, 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 (
Each of the first and second half sections 242, 244 is joined together using a hinge 246 or other suitable formation (e.g., a plurality of interlocking cylinders) including a hinge pin 248 selectively retained therein to enable relative motion of the first and second half sections 242, 244 from a first, open configuration, to a second, closed or clamped configuration. In one non-limiting embodiment, the hinge pin 248 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 242, 244 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 242, 244 includes a post 250 disposed thereon and extending therefrom. The post 250 is configured to be selectively coupled to a portion of a respective strut of the pair of struts 202 such that the strut 202 is coupled to the upper damper mount 210 at a first end portion thereof and to the lower damper mount 240 at a second end portion thereof. In this manner, rotation of the torque tube 12 effectuates a corresponding rotation of the upper damper mount 210, which causes the strut 202 to compress or extend between the upper damper mount 210 and the lower damper mount 240, depending on the direction of rotation of the torque tube 12. It is envisioned that the post 250 may be a bolt, threaded rod, stud, amongst others. In one non-limiting embodiment, the post 250 may be replaced with a bolt that passes entirely through both of the first and second half sections 242, 244 (
With reference to
The upper plate 262 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 264 defines a bore 266 through each of the upper and lower surfaces 262a, 262b that is configured to receive a portion of a pile 22 therethrough. The inner surface 264 defines a tapered profile extending from a center portion of the upper plate 262 towards the outer surface 262c as the inner surface 264 transitions from the upper surface 262a to the lower surface 262b. The upper plate 262 includes a tab 268 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 262 (e.g., machined, folded, etc.) or may be formed as a separate component that is coupled to the upper plate 262 using any suitable means, such as fasteners, welding, adhesives, amongst others. The tab 268 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 272 to maintain alignment of the upper and lower plates 262, 272, as will be described in further detail hereinbelow.
The tab 268 includes a post 270 disposed thereon that is configured to be selectively coupled to a portion of a strut 202. It is envisioned that the post 270 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 embodiment, the post 270 is integrally formed (e.g., machined) with the tab 268.
The lower plate 272 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 274 defines a bore 276 through each of the upper and lower surfaces 272a, 272b that is configured to receive a portion of a pile 22 therethrough. The inner surface 274 defines a tapered profile extending from adjacent the outer surface 272c towards a center portion of the lower plate 272 as the inner surface 274 transitions from the upper surface 272a to the lower surface 272b (e.g., in an opposite direction to the inner surface 264 of the upper plate 262). The tapered profiles of the inner surfaces 264, 274 of the upper and lower plates 262, 272, respectively, cooperate to cause the split collet 280 to be driven towards a center portion of the upper and lower plates 262, 272 and clamp or otherwise inhibit movement of the lower damper mount 260 relative to the pile 22 captured therein, as will be described in further detail hereinbelow.
The upper surface 272a defines one or more dimples 278 therein corresponding to the one or more protuberances 268b of the upper plate 262, such that as the upper plate 262 is placed in relation to the lower plate 272, the one or more protuberances 268b are received within the corresponding one or more dimples 278 to inhibit translation or rotation of the upper and lower plates 262, 272 relative to one another. Although generally described as being a dimple, it is contemplated that the one or more dimples 278 may pass entirely through both the upper and lower surfaces 272a, 272b of the lower plate 272.
Continuing with
The first and second tapered portions 282g, 282h cooperate with the respective inner surfaces 264, 274 of the upper and lower plates 262, 272, such that as the upper and lower plates 262, 272 are drawn towards one another, the tapered profiles of the inner surfaces 264, 274 of the upper and lower plates abut the tapered portions 282g, 282h, respectively, to cause the half section 282 to translate towards a center portion of the lower damper mount 260 and clamp or otherwise compress against a portion of the pile 22 disposed therein to inhibit movement of the lower damper mount 260 relative to the pile 22.
The inner surface 282e of the half section 282 includes a plurality of ribs or crenellations 286 thereon. As can be appreciated, the crenellations 286 engage and outer surface of the pile 22 to help mitigate movement of the lower damper mount 260 relative to the pile 22 when the pile 22 is received between the split collet 280. It is envisioned that the crenellations 286 may be integrally formed with the half section 282, 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 282 includes a pair of hoops 288 disposed thereon that is configured to slidably receive a pair of fasteners 290. The pair of hoops 288 define an elongated hole 288a therein to permit the half section 282 to translate in a perpendicular direction relative to the fastener 290. In this manner, the pair of fasteners pass through a portion of the upper plate 262, through the elongated holes 288a of the pair of hoops 288, and through a portion of the lower plate 272 to align or otherwise maintain an orientation of the upper plate 262, split collet 280, and lower plate 272 relative to one another. The pair of fasteners 290 cooperate to draw the lower plate 272 towards the upper plate 282 when rotated in a first direction, which causes the tapered inner surfaces 264, 274 of the upper and lower plates 262, 272 abut the tapered portions 282g, 282h of the split collet, respectively, to cause the half section 282 to translate towards a center portion of the lower damper mount 260 and clamp or otherwise compress against a portion of the pile 22 disposed therein to inhibit movement of the lower damper mount 260 relative to the pile 22. Although generally illustrated as having a nut or other suitable component to threadably engage the fastener 290, it is envisioned that the lower plate 272 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 260 may include any number of fasteners, such as three, four, five, etc.
Returning to
While several embodiments of the disclosure have been shown in the drawings, it is not intended that the disclosure be limited thereto, as it is intended that the disclosure be as broad in scope as the art will allow and that the specification be read likewise. Therefore, the above description should not be construed as limiting, but merely as exemplifications of particular embodiments.
Claims
1. A pier for a solar tracking system, comprising:
- 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 mounting bracket, the mounting 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.
2. The pier according to claim 1, further comprising a fastener, the fastener coupling the bearing housing assembly to the mounting bracket.
3. The pier according to claim 2, wherein the fastener includes an inclined washer, the inclined washing causing the fastener to engage the bearing housing assembly and the mounting bracket at an angle relative thereto.
4. The pier according to claim 2, wherein the fastener incudes a pair of inclined washers, the pair of inclined washers causing the fastener to engage the bearing housing assembly and the mounting bracket at an angle relative thereto.
5. The pier according to claim 1, wherein the bracket defines a U-shaped profile having a channel defined therethrough, wherein the crown of the frame is received within a portion of the channel.
6. The pier according to claim 1, further comprising 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.
7. A pier for a solar tracking system, comprising:
- 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 plurality of legs and the remaining plurality of legs; and
- a motor mount, the motor mount including first and second half sections, the first and second half sections configured to receive a portion of the saddle therebetween.
8. The pier according to claim 7, wherein each of the first and second half sections of the motor mount defines a hook shaped portion that is configured to receive a portion of the saddle therein.
9. The pier according to claim 7, wherein the first and second half sections cooperate to compress the saddle therebetween to inhibit movement of the motor mount relative to the saddle.
10. The pier according to claim 7, wherein a pair of the plurality of legs define an A-shaped profile.
11. The pier according to claim 10, wherein the saddle is coupled to a crown of the A-shaped profile of the pair of legs.
12-20. (canceled)
Type: Application
Filed: May 12, 2023
Publication Date: Sep 7, 2023
Applicant: Nextracker LLC (Fremont, CA)
Inventors: Phani Kumar (Hyderabad), Abhimanyu Sable (Hyderabad), Jitendra Morankar (Hyderabad), Alexander W. AU (Oakland, CA), David Kresse (Walnut Creek, CA)
Application Number: 18/196,843