US20130152915A1 - Bearing Assembly For A Solar Collector System - Google Patents

Bearing Assembly For A Solar Collector System Download PDF

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Publication number
US20130152915A1
US20130152915A1 US13/704,349 US201113704349A US2013152915A1 US 20130152915 A1 US20130152915 A1 US 20130152915A1 US 201113704349 A US201113704349 A US 201113704349A US 2013152915 A1 US2013152915 A1 US 2013152915A1
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US
United States
Prior art keywords
support element
housing assembly
wheels
solar collector
pair
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US13/704,349
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English (en)
Inventor
Zachary Marten
Vikas Kotagiri
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Magna International Inc
Original Assignee
Magna International Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Magna International Inc filed Critical Magna International Inc
Priority to US13/704,349 priority Critical patent/US20130152915A1/en
Assigned to MAGNA INTERNATIONAL INC. reassignment MAGNA INTERNATIONAL INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: KOTAGIRI, VIKAS, MARTEN, ZACHARY
Publication of US20130152915A1 publication Critical patent/US20130152915A1/en
Abandoned legal-status Critical Current

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Classifications

    • F24J2/54—
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S30/00—Arrangements for moving or orienting solar heat collector modules
    • F24S30/40—Arrangements for moving or orienting solar heat collector modules for rotary movement
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/50—Other types of ball or roller bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S30/00—Arrangements for moving or orienting solar heat collector modules
    • F24S30/40—Arrangements for moving or orienting solar heat collector modules for rotary movement
    • F24S30/42—Arrangements for moving or orienting solar heat collector modules for rotary movement with only one rotation axis
    • F24S30/425—Horizontal axis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S50/00—Arrangements for controlling solar heat collectors
    • F24S50/20—Arrangements for controlling solar heat collectors for tracking
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S23/00—Arrangements for concentrating solar-rays for solar heat collectors
    • F24S23/70—Arrangements for concentrating solar-rays for solar heat collectors with reflectors
    • F24S2023/83—Other shapes
    • F24S2023/834—Other shapes trough-shaped
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S30/00—Arrangements for moving or orienting solar heat collector modules
    • F24S2030/10—Special components
    • F24S2030/15—Bearings
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/40—Solar thermal energy, e.g. solar towers
    • Y02E10/47—Mountings or tracking
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P80/00—Climate change mitigation technologies for sector-wide applications
    • Y02P80/20—Climate change mitigation technologies for sector-wide applications using renewable energy
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/4935—Heat exchanger or boiler making
    • Y10T29/49355—Solar energy device making

Definitions

  • the instant invention relates generally to a bearing assembly for a solar collector system, and more particularly to a low speed bearing assembly for a solar collector system based on a large diameter structural support cylinder.
  • a reflective surface is used to concentrate solar radiation from a relatively large area onto a relatively small target or collector surface.
  • One specific type of system utilizes long, reflective trough structures to concentrate the solar radiation onto high gain solar panels miming along the top of the trough structure.
  • a parabolic dish reflector is used.
  • the efficiency of a reflector type solar collector system is greatly increased by utilizing a movable solar collector that tracks the movement of the sun across the sky. In this way, the solar collector can be effectively aimed at the sun such that the reflected solar radiation is focused continuously onto the collector surface.
  • the methods and apparatus for supporting and aiming solar collectors toward the sun are rather crude and simple.
  • the solar collector is mounted to an axle or support rod that is journaled into a bearing or bushing structure, such that the supported solar collector can be rotated to point the reflective surface thereof directly toward the sun.
  • This-type of apparatus for supporting the solar collector is wrought with many problems. Specifically, it is extremely difficult to install such a type of system in such a manner that the bearing structures and the support rods are in precise alignment.
  • Hutchison in U.S. Pat. No. 4,306,540 proposes an improved solar collector mounting and support apparatus.
  • the apparatus includes a support axle for the solar collector, which has a ball at one end that is carried within a cylindrical sleeve in the solar collector to support the weight of the collector.
  • a support pylon assembly is provided in which a pair of lower bolts passes through a rectangular body of the support pylon, parallel to the axis of rotation of the support axle.
  • a roller is carried on each lower bolt, the rollers being positioned to support the axle when the axle is positioned on top of the support pylon.
  • a third roller is provided on an upper bolt, which passes through holes that are defined in one end of each of a pair of curved retaining arms.
  • each one of the retaining arms is pivotally carried on one of the pair of lower bolts.
  • the retaining assembly including the third roller, upper bolt and pair of curved retaining arms, prevents the axle from being lifted accidentally from the pylon, such as for example by a windstorm.
  • the support axle is positioned on the rollers on top of the support pylon, and the curved retaining arms are pivoted about the lower bolts.
  • the holes in the one end of each of the pair of retaining arms are aligned for receiving the upper bolt, and the upper bolt and third roller are assembled to the retaining arms.
  • the third roller is “sandwiched” between the retaining arms and is held in place by the upper bolt.
  • a fastener is then tightened onto the upper bolt, in order to hold the retaining assembly together.
  • the retaining assembly can be assembled together only after the solar collector has been placed on top of the rollers. Hence, the task of assembling the retaining assembly must be performed in the field, often under adverse weather conditions.
  • windy weather may result in shifting of the axle before the retaining assembly can be fully assembled, and may frustrate attempts to align the holes in the retaining arms, insert the upper bolt, and simultaneously position the third roller on the bolt between the retaining arms.
  • cold temperatures may make it difficult to handle and manipulate the multiple, small parts of the retaining assembly. The need to assemble the retaining assembly in the field results in increased installation costs and delays.
  • a solar collector system comprising: a movable solar collector surface; a support element coupled to the solar collector surface, the support element having a length and having an outer surface that defines a circle in a cross section taken in a plane normal to the length, the support element being rotatable about a longitudinal axis defined along the length thereof; a housing assembly having a mounting end and a bearing end, the mounting end comprising a mounting structure for fixedly securing the housing assembly to a base element, the bearing end defining an opening for receiving the support element when the housing assembly and the support element are coupled together such that the housing assembly at least partially encircles a portion of the outer surface of the support element, the encircled portion of the outer surface defining a bearing surface of the support element; a pair of first wheels mounted to the bearing end of the housing assembly, each first wheel of the pair of first wheels disposed adjacent to the opening and protruding into the opening for contacting a portion of the bearing surface that faces toward the mounting
  • a solar collector system comprising: a movable solar collector surface; a cylindrical support element coupled to the solar collector surface, the cylindrical support element having an outer surface extending along a length thereof and being rotatable about a longitudinal axis that is defined along said length; a housing assembly comprising first and second housing elements defining a central opening therebetween when the housing assembly is in an assembled condition, the central opening sized for receiving the cylindrical support element when the housing assembly and the cylindrical support element are coupled together, the housing assembly having a mounting end and a retaining end disposed on opposite sides of the central opening, the mounting end comprising a mounting structure for fixedly securing the housing assembly to a base element and the retaining end comprising a retaining element for detachably coupling together the first and second housing elements at the retaining end of the housing assembly; a pair of load bearing wheels mounted one each to the first and second housing elements and protruding into the central opening, for rollingly engaging a first portion of the outer surface of the cylindrical
  • a solar collector system comprising: a movable solar collector surface; a cylindrical support element coupled to the solar collector surface, the cylindrical support element having an outer surface extending along a length thereof and being rotatable about a longitudinal axis defined along said length; a housing assembly comprising a plurality of wheels, the housing assembly coupled to the cylindrical support element such that the cylindrical support element is disposed between a first group of the plurality of wheels and a second group of the plurality of wheels, the housing assembly comprising a mounting structure for fixedly securing the housing assembly to a base element, the mounting structure disposed on the housing assembly relative to the plurality of wheels such that when the housing assembly is fixedly secured to the base element via the mounting structure, the first group of the plurality of wheels rollingly engages the outer surface of the cylindrical support element and bears the weight of the cylindrical support element and the second group of the plurality of wheels acts as counter load wheels, wherein the housing assembly and the cylindrical support element are coupleable together prior to securing the
  • a method comprising: providing a solar collector assembly comprising a solar collector surface that is coupled to a cylindrical support element, the cylindrical support element having an outer surface and a length; providing a housing assembly having a plurality of wheels mounted thereto including a pair of load bearing wheels and at least a counter load wheel, the housing assembly having a mounting structure for fixedly securing the housing assembly to a base element; coupling the housing assembly to the cylindrical support element such that the cylindrical support element is disposed between the pair of load bearing wheels and the at least a counter load wheel; and, fixedly securing the coupled together housing assembly and solar collector assembly to a base element via the mounting structure of the housing assembly and a complementary mounting structure of the base element, such that the pair of load bearing wheels rollingly engage the outer surface of the cylindrical support element and bear the weight of the cylindrical support element.
  • a solar collector system comprising: a movable solar collector surface; a cylindrical support element coupled to the solar collector surface, the cylindrical support element having an outer surface extending along a length thereof and being rotatable about a longitudinal axis defined along said length; a housing assembly comprising a plurality of spherical rollers, the housing assembly coupled to the cylindrical support element such that the cylindrical support element is disposed between a first group of the plurality of spherical rollers and a second group of the plurality of spherical rollers, the housing assembly comprising a mounting structure for fixedly securing the housing assembly to a base element, the mounting structure disposed on the housing assembly relative to the plurality of spherical rollers such that when the housing assembly is fixedly secured to the base element via the mounting structure, the first group of the plurality of spherical rollers rollingly engages the outer surface of the cylindrical support element and bears the weight of the cylindrical support element and the second group of the
  • FIG. 1 is an exploded perspective view of a solar collector assembly according to an embodiment of the instant invention
  • FIG. 2 shows a pair of housing assemblies coupled to the cylindrical support element of the solar collector system of FIG. 1 , according to an embodiment of the instant invention
  • FIG. 3 is an exploded perspective view of another solar collector assembly according to an embodiment of the instant invention.
  • FIG. 4 shows a pair of housing assemblies coupled to the cylindrical support element of the solar collector system of FIG. 3 , according to an embodiment of the instant invention
  • FIG. 5 is an enlarged perspective view showing a housing assembly coupled to the cylindrical support element of the solar collector system of FIG. 1 or FIG. 3 , according to an embodiment of the instant invention
  • FIG. 6 is a cross-sectional view of a housing assembly according to an embodiment of the instant invention.
  • FIG. 7 is a simplified flow diagram for a method of installing a solar collector assembly according to an embodiment of the instant invention.
  • the collector assembly 100 is a dual trough solar energy concentrator or collector, having two optical apertures 102 a and 102 b.
  • the optical apertures 102 admit incident sunlight onto reflector panels 104 .
  • four reflector panels 104 are grouped into two pairs of opposing panels that are arranged in a substantially edge-to-edge fashion.
  • the top surface of each reflector panel 104 is, by way of a specific and non-limiting example, covered with a thin durable metallic coating, which is encased in oxide layers to ensure high durability and structural rigidity.
  • each reflector panel 104 is fabricated using another suitable reflective material.
  • struts and/or other reinforcing members are mounted to the lower surfaces of the reflector panels 104 , resulting in a very durable yet lightweight structure.
  • Solar receivers 106 are mounted in a vertical orientation near the top edges of the reflector panels 104 for collecting the reflected solar radiation.
  • the solar receivers 106 are High Gain Solar (HGS) panels, which include a not illustrated backing plate, silicon cells, encapsulant, glass cover plate and junction box.
  • the solar receivers 106 further include a not illustrated metal heat sink, which enables efficient convection cooling with natural airflow.
  • the solar receivers 106 include a quick-connect feature for rapid installation onto the solar collector 100 and easy maintenance.
  • the reflector panels 104 are supported at opposite ends thereof using V-shaped support elements 108 .
  • Each V-shaped support element 108 supports two reflector panels 104 , so as to define one of the two troughs of the collector assembly 100 .
  • the V-shaped support elements 108 are mounted to support rings 110 via projections 112 .
  • Each support ring 110 is fixedly mounted to a cylindrical support element 114 , such that rotational motion of the cylindrical support element 114 about a longitudinal axis A is transferred to the reflector panels 104 via the support rings 110 , projections 112 and V-shaped support elements 108 .
  • the cylindrical support element 114 is, by way of a specific and non-limiting example, a large diameter structural support cylinder fabricated from mild steel. A typical diameter of the cylindrical support element 114 is approximately eight inches.
  • each housing assembly 116 includes a plurality of wheels 118 , which are mounted adjacent to and project into a central opening of the bearing end so as to support the cylindrical support element 114 , while at the same time allowing the cylindrical support element to rotate about the longitudinal axis A.
  • the wheels 118 are fabricated from a suitable material, such as for instance nylon. Further, the wheels 118 include an axle and bearing assembly for mounting the wheels to the housing assembly 116 .
  • the solar collector assembly 100 also includes a not illustrated drive mechanism and a not illustrated controller for controllably rotating the cylindrical support element 114 .
  • spherical-shaped rollers are employed in place of the wheels 118 .
  • each housing assembly 116 further includes a mounting end 120 having a mounting structure for fixedly securing the housing assembly to a base element, such as for instance one of the pylons 122 .
  • a base element such as for instance one of the pylons 122 .
  • four housing assemblies 116 are used to carry the cylindrical support element 114 .
  • the number of housing assemblies 116 that is required for a particular application depends upon a number of factors. Determining a suitable number of housing assemblies 116 for a particular application is considered to be within the capabilities of a person having ordinary skill in the art.
  • the collector assembly 100 is optionally expanded by mechanically coupling additional sets of reflector panels 104 to the cylindrical support element 114 . Adjacent sets of reflector panels 104 are supported using V-shaped support elements 108 that are disposed within a space between the respective ends thereof.
  • a typical solar collector array may be approximately 25 feet in length.
  • an array of collector assemblies shares a common drive mechanism and tracking controller hardware. For instance, four collector assemblies coupled together are driven simultaneously using a single drive unit disposed in the center of the array.
  • FIG. 2 is a partial bottom view showing a pair of housing assemblies 116 coupled to the cylindrical support element 114 of the system of FIG. 1 .
  • Two sets of reflector panels 104 a and 104 b are shown coupled together in FIG. 2 , with V-shaped support elements 108 disposed between the ends of the reflector panels 104 a and the ends of the reflector panels 104 b.
  • support ring 110 carries both sets of reflector panels 104 a and 104 b, and rotational movement of the cylindrical support element is transferred to both sets of reflector panels 104 a and 104 b.
  • One housing assembly 116 is disposed adjacent to each side of the support ring 110 .
  • each housing assembly 116 rollingly engages an outer surface of the cylindrical support element 114 . Also shown in FIG. 2 , the mounting end 120 of each housing assembly is oriented for being fixedly secured to a base element.
  • the collector assembly 300 is a single trough solar energy concentrator or collector, having one optical aperture 302 .
  • the optical aperture 302 admits incident sunlight onto reflector panels 104 .
  • two reflector panels 104 are grouped into a pair of opposing panels that are arranged in a substantially edge-to-edge fashion.
  • the top surface of each reflector panel 104 is, by way of a specific and non-limiting example, covered with a thin durable metallic coating, which is encased in oxide layers to ensure-high durability and structural rigidity.
  • the top surface of each reflector panel 104 is fabricated using another suitable reflective material.
  • struts and/or other reinforcing members are mounted to the lower surfaces of the reflector panels 104 , resulting in a very durable yet lightweight structure.
  • Solar receivers 106 are mounted in a vertical orientation near the top edges of the reflector panels 104 for collecting the reflected solar radiation.
  • the solar receivers 106 are High Gain Solar (HGS) panels, which include a not illustrated backing plate, silicon cells, encapsulant, glass cover plate and junction box.
  • the solar receivers 106 further include a not illustrated metal heat sink, which enables efficient convection cooling with natural airflow.
  • the solar receivers 106 include a quick-connect feature for rapid installation onto the solar collector 300 and easy maintenance.
  • the reflector panels 104 are supported at opposite ends thereof using V-shaped support elements 108 .
  • Each V-shaped support element 108 supports two reflector panels 104 , so as to define the trough of the collector assembly 300 .
  • the V-shaped support elements 108 are mounted to support rings 110 via projections 112 .
  • Each support ring 110 is fixedly mounted to a cylindrical support element 114 , such that rotational motion of the cylindrical support element 114 about a longitudinal axis A is transferred to the reflector panels 104 via the support rings 110 , projections 112 and V-shaped support elements 108 .
  • the cylindrical support element 114 is, by way of a specific and non-limiting example, a large diameter structural support cylinder fabricated from mild steel. A typical diameter of the cylindrical support element 114 is approximately eight inches.
  • each housing assembly 116 includes a plurality of wheels 118 , which are mounted adjacent to and project into a central opening of the bearing end so as to support the cylindrical support element 114 , while at the same time allowing the cylindrical support element to rotate about the longitudinal axis A.
  • the wheels 118 are fabricated from a suitable material, such as for instance nylon. Further, the wheels 118 include an axle and bearing assembly for mounting the wheels to the housing assembly 116 .
  • the solar collector assembly 300 also includes a not illustrated drive mechanism and a not illustrated controller for controllably rotating the cylindrical support element 114 .
  • spherical-shaped rollers are employed in place of the wheels 118 .
  • each housing assembly 116 further includes a mounting end 120 having a mounting structure for fixedly securing the housing assembly to a base element, such as for instance one of the pylons 122 .
  • a base element such as for instance one of the pylons 122 .
  • four housing assemblies 116 are used to carry the cylindrical support element 114 .
  • the number of housing assemblies 116 that is required for a particular application depends upon a number of factors. Determining a suitable number of housing assemblies 116 for a particular application is considered to be within the capabilities of a person having ordinary skill in the art.
  • the collector assembly 300 is optionally expanded by mechanically coupling additional sets of reflector panels 104 to the cylindrical support element 114 . Adjacent sets of reflector panels 104 are supported using V-shaped support elements 108 that are disposed within a space between the respective ends thereof.
  • a typical solar collector array may be approximately 25 feet in length.
  • an array of collector assemblies shares a common drive mechanism and tracking controller hardware. For instance, four collector assemblies coupled together are driven simultaneously using a single drive unit disposed in the center of the array.
  • FIG. 4 is a partial bottom view showing a pair of housing assemblies 116 coupled to the cylindrical support element 114 of the system of FIG. 3 .
  • Two sets of reflector panels 104 a and 104 b are shown coupled together in an end-to-end fashion, with V-shaped support elements 108 disposed between the ends of the reflector panels 104 a and the ends of the reflector panels 104 b.
  • support ring 110 carries both sets of reflector panels 104 a and 104 b, and rotational movement of the cylindrical support element is transferred to both sets of reflector panels 104 a and 104 b.
  • One housing assembly 116 is disposed adjacent to each side of the support ring 110 .
  • each housing assembly 116 rollingly engages an outer surface of the cylindrical support element 114 . Also shown in FIG. 4 , the mounting end 120 of each housing assembly is oriented for being fixedly secured to a base element.
  • FIG. 5 is an enlarged perspective view showing a housing assembly 116 coupled to the cylindrical support element 114 of the system of FIG. 1 or FIG. 3 .
  • FIG. 6 is a cross-sectional view of the housing assembly 116 coupled to the cylindrical support element 114 , taken in a plane that passes through the plurality of wheels 118 .
  • the housing assembly 116 comprises first and second housing elements 200 a and 200 b, which define a central opening 202 therebetween when the housing assembly 116 is in an assembled condition.
  • the central opening 202 is sized for receiving the cylindrical support element 114 when the housing assembly 116 and the cylindrical support element 114 are coupled together.
  • the mounting end 120 and a retaining end 204 are defined on opposite sides of the central opening 202 .
  • the mounting end comprises a mounting structure 206 that is disposed between the first and second housing elements 200 a and 202 b.
  • the mounting structure 206 is for mating with a not illustrated complementary mounting structure of a base element, such as for instance the pylon 122 in FIG. 1 or FIG. 3 .
  • the retaining end 204 comprises a retaining element, such as for instance bolt 208 or another suitable fastener, for detachably coupling together the first and second housing elements 200 a and 200 b at the retaining end 204 of the housing assembly 116 .
  • Each one of the first and second housing elements 200 a and 200 b includes a mounting structure for retaining an axel 210 a of a load bearing wheel 118 a and a mounting structure for retaining an axel 210 b of a counter load wheel 118 b.
  • a portion of the outer surface of the cylindrical support element 114 that is encircled by the housing assembly 116 defines a bearing surface, upon which the wheels 118 a and 118 b rollingly engage the cylindrical support element.
  • the load bearing wheels 118 a are normally in contact with the bearing surface of the cylindrical support element 114 and the counter load wheels 118 b are normally out of contact with the bearing surface of the cylindrical support element 114 .
  • the resulting small gap between the counter load wheels 118 b and the cylindrical support element 114 supports axial movement of the cylindrical support element 114 relative to the housing assembly 116 , so as to allow for thermal expansion and contraction of the cylindrical support element 114 , etc.
  • the counter load wheels 118 b rollingly engage the bearing surface of the cylindrical support element and thereby limit its travel.
  • the two load bearing wheels 118 a and the two counter load wheels 118 b are arranged in a substantially square configuration within the plane of the cross section.
  • the load bearing wheels 118 a may be placed within a range of angles between about 25° and about 65° relative to the line B-B in FIG. 4 .
  • a single counter load wheel 118 b is provided.
  • the wheels are mounted to the housing assembly 116 via an adjustable mechanism, such that the extent to which the wheels project into the central opening 202 is adjustable.
  • a diameter of the load bearing wheels 118 a is larger than a diameter of the counter load wheels 118 b.
  • the diameter of the load bearing wheels 118 a is less than 50% of the diameter of the cylindrical support element 114 .
  • the load bearing wheels 118 a and the counter load wheels 118 b are mounted to the housing assembly absent a drive mechanism for driving rotation of the cylindrical support element 114 .
  • the housing assembly 116 and the cylindrical support element 114 are coupleable together prior to securing the housing assembly 116 to a base element, such as for instance the pylon 122 in FIG. 1 or FIG. 3 .
  • the first and second housing elements 200 a and 200 b may be coupled together, with the cylindrical support element accommodated within the central opening 202 that is formed therebetween, during manufacturing of the collector assembly 100 .
  • the collector assembly 100 may be shipped from the manufacturer in a pre-assembled condition, such that installation of the assembly 100 requires only securing the mounting structure 206 of each housing assembly 116 to a complementary mounting structure of the base element. Installation of the collector assembly 100 is simplified, such that the time that is required to install each assembly 100 is reduced and such that installation may be performed under less than ideal weather conditions.
  • a solar collector assembly comprising a solar collector surface that is coupled to a cylindrical support element, the cylindrical support element having an outer surface and a length.
  • a housing assembly is provided, the housing assembly having a plurality of wheels mounted thereto including a pair of load bearing wheels and at least a counter load wheel, the housing assembly also having a mounting structure for fixedly securing the housing assembly to a base element.
  • the housing assembly is coupled to the cylindrical support element such that the cylindrical support element is disposed between the pair of load bearing wheels and the at least a counter load wheel.
  • the coupled-together housing assembly and solar collector assembly is fixedly secured to a base element via the mounting structure of the housing assembly and a complementary mounting structure of the base element, such that the pair of load bearing wheels rollingly engage the outer surface of the cylindrical support element and bear the weight of the cylindrical support element.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Photovoltaic Devices (AREA)
US13/704,349 2010-07-01 2011-06-29 Bearing Assembly For A Solar Collector System Abandoned US20130152915A1 (en)

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US36061210P 2010-07-01 2010-07-01
PCT/US2011/042442 WO2012003235A1 (en) 2010-07-01 2011-06-29 Bearing assembly for a solar collector system
US13/704,349 US20130152915A1 (en) 2010-07-01 2011-06-29 Bearing Assembly For A Solar Collector System

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EP (1) EP2588790A4 (pt)
BR (1) BR112012033459A2 (pt)
CA (1) CA2802104A1 (pt)
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US9746207B1 (en) * 2011-03-16 2017-08-29 Solarreserve Technology, Llc Tracking modules including tip/tilt adjustability and construction features
US20180073773A1 (en) * 2016-09-09 2018-03-15 Sunpower Corporation Sun tracking solar energy collection system with torsion lock
US10778140B2 (en) * 2015-09-14 2020-09-15 Soltec Energías Renovables, S.L. Device for capturing solar energy
US10931224B2 (en) 2016-06-03 2021-02-23 RBI Solar, Inc. Single axis in-line gearbox modular tracker system
US20220352847A1 (en) * 2021-04-29 2022-11-03 Array Technologies, Inc. Photovoltaic tracker driveline joint
US20230336114A1 (en) * 2021-04-29 2023-10-19 Array Technologies, Inc. Photovoltaic tracker driveline joint
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CA2802104A1 (en) 2012-01-05
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MX2012015275A (es) 2013-02-12
EP2588790A1 (en) 2013-05-08
BR112012033459A2 (pt) 2017-12-05

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