WO2018229617A1 - Appareil d'échelle pour un panneau solaire ou un réseau solaire - Google Patents

Appareil d'échelle pour un panneau solaire ou un réseau solaire Download PDF

Info

Publication number
WO2018229617A1
WO2018229617A1 PCT/IB2018/054158 IB2018054158W WO2018229617A1 WO 2018229617 A1 WO2018229617 A1 WO 2018229617A1 IB 2018054158 W IB2018054158 W IB 2018054158W WO 2018229617 A1 WO2018229617 A1 WO 2018229617A1
Authority
WO
WIPO (PCT)
Prior art keywords
ladder
solar panel
ladder apparatus
rails
trolley
Prior art date
Application number
PCT/IB2018/054158
Other languages
English (en)
Inventor
Michael COULING
Eric COULING
Original Assignee
Renewecare Limited
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 Renewecare Limited filed Critical Renewecare Limited
Publication of WO2018229617A1 publication Critical patent/WO2018229617A1/fr

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06C—LADDERS
    • E06C1/00—Ladders in general
    • E06C1/02—Ladders in general with rigid longitudinal member or members
    • E06C1/34—Ladders attached to structures, such as windows, cornices, poles, or the like
    • E06C1/345—Ladders attached to structures, such as windows, cornices, poles, or the like specially adapted to be installed parallel to the roof surface
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06C—LADDERS
    • E06C1/00—Ladders in general
    • E06C1/02—Ladders in general with rigid longitudinal member or members
    • E06C1/34—Ladders attached to structures, such as windows, cornices, poles, or the like
    • E06C1/36—Ladders suspendable by hooks or the like
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06C—LADDERS
    • E06C7/00—Component parts, supporting parts, or accessories
    • E06C7/08—Special construction of longitudinal members, or rungs or other treads
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06C—LADDERS
    • E06C7/00—Component parts, supporting parts, or accessories
    • E06C7/08—Special construction of longitudinal members, or rungs or other treads
    • E06C7/081—Rungs or other treads comprising anti-slip features
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06C—LADDERS
    • E06C7/00—Component parts, supporting parts, or accessories
    • E06C7/48—Ladder heads; Supports for heads of ladders for resting against objects

Definitions

  • a LADDER APPARATUS FOR A SOLAR PANEL OR SOLAR ARRAY Field of the Invention relates to a ladder apparatus for use on a solar panel or array of solar panels; in particular apparatus for allowing access to install, maintain, clean and repair a solar panel or solar array; such as but not exclusively an array formed of multiple photovoltaic modules.
  • CN 204 960 775 discloses a climbing device for a photovoltaic module.
  • CN 204 002 517 discloses an anti-slip ladder for mounting and maintaining components in a photovoltaic plant.
  • JP 2000 145 130 discloses a maintenance ladder for a roof equipped with a solar battery by which maintenance work was able to be efficiently carried out.
  • US4483416 discloses a ladder including upstanding opposite side rails and vertically spaced rungs.
  • WO2014/194366 discloses a ladder safety mechanism with at least one clamp.
  • GB2026073 (Primerano) discloses adjustable ladder hooks with hooks pivotably mounted on carriers in turn slideable either along the ladders stiles or along a bracket.
  • FR2694783 (Sevrin) discloses a safety device for stopping ladders from overturning.
  • DE19755390 discloses a holder in the form of a guide rail parallel with the ladder struts.
  • the present invention arose in order to overcome problems suffered by existing devices.
  • ladder apparatus for use with a solar panel, comprising: a pair of substantially parallel rails joined by a plurality of rungs and an elongate sheet of material arranged in use below the rungs ; the rails are adapted to receive at least one sliding bracket; each sliding bracket is associated with at least one hook that extends downwards from the rail to permit engagement of the hook with part of the solar panel so as to locate the ladder on the solar panel; and a locking means fixes each sliding bracket in position on a rail.
  • the at least one hook provides a means of securely engaging the ladder with the solar panel or solar array.
  • the hook serves to connect the ladder to the solar panel or solar array.
  • a solar panel includes at least one photovoltaic cell to absorb sunlight and generate electricity.
  • the solar panel may include an integrated frame or may be mounted on a frame. It is therefore appreciated that the hook(s) may engage with various parts that make up the module. In this way the apparatus is suitable for use with different embodiments of solar panels.
  • the ladder apparatus can be arranged for use with solar panel arrays so as to allow a user to gain access to a large solar panel which may comprise many panels or arrays without standing on glass in the panels or the arrays.
  • the apparatus includes a ladder that extends across an upper face of a solar panel so that a user is able to climb across the modules, safely reaching all areas for maintenance, cleaning and repair works.
  • the apparatus is adapted to fit to the module such that the photovoltaic cells or solar cells and covering layers are protected whilst access over the entire upper surface of the module is permitted.
  • the weight of the apparatus is borne by the frame upon which the solar panel is arranged.
  • the ladder apparatus is adapted to engage with the frame so as to locate the apparatus on the module.
  • the ladder apparatus is easily fitted by means of the hooks that are provided on brackets which are shaped and dimensioned to fit over parts of the module which may include the frame.
  • hooks may be used to provide alternative connection means.
  • the hook may include or comprise a clamp, G clamp, bracket, or interlocking part that is received by a corresponding part or region on the solar panel or frame of the solar panel or array.
  • the hooks are arranged to slot between adjacent modules so that the ladder spans the photovoltaic cells and so that hooks rest against a frame provided on a lower face of the solar panel.
  • the brackets slide along the rails so that bracket can be aligned with the part of the solar panel against which the hook will rest.
  • the hooks may include a resiliently deformable layer of material so as to protect the hook from damaging any part of the solar array.
  • the weight of the apparatus is borne by the frame of a solar panel upon which the solar panel is arranged.
  • the ladder apparatus is adapted to engage with the frame so as to locate the apparatus on and over the module, fixing it in position during use.
  • the ladder apparatus is adjustable so as to provide a universal device that can be adapted to fit solar panels of different shapes and dimensions.
  • the ladder apparatus can be configured to be deployed for use over a module or array of solar panels in both portrait and in landscape orientations.
  • the ladder apparatus has a pair of sliding brackets arranged on a pair of substantially parallel rails.
  • the ladder apparatus may include two or more pairs of sliding brackets to permit multiple points of contact and support.
  • the sliding brackets includes a locking means for fixing the bracket at a desired location on the rail.
  • the sliding bracket includes apertures through which a fixing such as a bolt can be passed through in order to lock the sliding bracket to the rail.
  • the bracket may include a grub screw or a knob bolt that can be tightened so as to come into contact with the rail and lock the sliding bracket to the rail by means of friction.
  • the sliding brackets support hooks, or are associated with a structure that supports hooks, so that the position of the hooks can be adjusted by sliding the sliding bracket along rails so that the hooks can be positioned to correspond with the frame of the solar panel.
  • the sliding brackets, or associated structure that supports the hooks are arranged, and sized and dimensioned, to allow the hooks to fit in between the solar panels, even when arranged in an array.
  • the ladder apparatus serves to transfer the weight of the ladder and user(s) onto strong region of the solar panel, typically the structure of the frame underneath the solar cells. As the brackets slide they can be moved to accommodate different frames or gaps between modules.
  • the pair of sliding brackets is adapted to receive an elongate member extending therebetween from which a pair of hooks suspend.
  • the sliding bracket is associated with a structure (elongate member) from which the hooks are suspended.
  • This arrangement allows the distance between each pair of hooks to be adjusted to correspond to the width of each solar panel, as the elongate member may be wider than the rungs, thus enabling the at least one hook to pass down the side of the solar panel reach a region on the lower face.
  • the elongate member is arranged to slide beneath the rails and rungs such that the elongate member is suspended from the sliding brackets a distance that permits the elongate member to slide freely between the ladder apparatus and the solar panel.
  • the sliding bracket is adapted to receive an elongate member such that is the elongate member is anchored in position below the rungs.
  • the sliding bracket is adapted so that the elongate member can be attached to or removed from the ladder apparatus. In this way the assembly and disassembly are easily permitted.
  • the hooks are supported by and suspended from a connector mounted on the elongate member.
  • the connector is moveable long the length of the elongate member so that the distance by which the hooks are spaced apart can be adjusted to correspond to the width of a solar panel and/or the frame upon which the solar panel is arranged. It is appreciated that the elongate member may extend beyond the rails of the ladder such that the hooks can be positioned at a width greater than the ladder.
  • the ladder apparatus can be adjusted to the length of the solar panel by positioning the sliding bracket along the rails and adjusted to fit the width of a solar panel by moving the connector and thereby the hooks along the elongate member to the desired position.
  • the connector is also adapted to permit connection of a hook.
  • the connector provides a clamp in which a hook is mounted and secured.
  • the hook is attached to the connector so that hook extends downwards towards the solar panel.
  • the hook can be added to and removed from the connector.
  • the connector may be a clamp assembly that removably receives the hook.
  • each hook may be arranged on a pivot so that the that hook can be displaced, for example when being slid along the rails so as not to catch on a part of the frame that the hook is not intended to connect.
  • the pivot may include a locking mechanism such as a ratchet mechanism so as to prevent the hook swinging freely about the pivot and potentially damaging the solar panel.
  • a locking mechanism such as a ratchet mechanism
  • the hook is typically provided at a distal end of an arm such that the length of the arm determines the distance by which the rails are separated from the solar panel.
  • the hooks may be provided in different shapes such as T-shaped (one hook) or F- shaped (two hooks).
  • the hooks may be formed from plates cut using water-jet technology into T- shaped or F-shaped members.
  • the brackets may comprise a plurality of hooks, or displaceable hooks, such that the hooks may be hooked onto or over more than one part of the frame, or so as to permit connection to different parts of a frame by one hook.
  • a hook with a plurality of hook portions may permit the ladder to be set different distances from the solar panel depending upon the work to be carried out.
  • the hook portion may include an adjustable arm, such as a telescopic arm to allow the hook to be spaced from the rail to a desired distance and ideally a means is provided to lock the hook in that configuration .
  • an adjustable arm such as a telescopic arm to allow the hook to be spaced from the rail to a desired distance and ideally a means is provided to lock the hook in that configuration .
  • the hook is received by the solar panel frame into a recess or channel.
  • a solar array frame may be formed from C-section.
  • the hook is arranged to engage with the C-section. In this way the hook permits the ladder apparatus to hang from the solar panel at a fixed position and to bear weight as the hook bears on a recess defined by the C-section of the frame.
  • the hook is coated with a non-conductive material so as to prevent conduction through the ladder if part of the module accidentally became electrified, such as due to damaged cables.
  • a coating may be formed from a resiliently deformable material so as to prevent damage to the surface of a solar panel with which the hook is in contact.
  • the ladder apparatus includes an anchor bracket that is arranged on the frame for receiving the hook.
  • the anchor bracket has an attachment means for connecting it to the frame and a channel for receiving the hook.
  • the attachment means comprises clips that define a channel for hooking over the frame so as to be quickly and easily deployed and attached to the frame. In this way the at least one anchor bracket may thereby be enabled to clip over horizontally arranged parts of the solar panel frame by being hung by the clips.
  • the rails are formed from a metal extrusion to provide a strong, lightweight structure suitable for supporting a user.
  • the rails are in the form of an I-beam or strut.
  • the rails are formed from box sections of rigid material.
  • the ladder may comprise more than one set of rails, for example so as to define a side depth to the ladder.
  • an outer rail portion furthest from the solar panel in use, and an inner rail section that is arranged closest to the solar panel in use.
  • the upper and lower rail portions are preferably spaced apart by a body, which body has braces to strengthen the rails.
  • the braces may be in the form or diagonal struts, or the body may be a sheet arranged between the rail portions.
  • the sheet may be provided with apertures so as to reduce weight of the rails.
  • apertures may be circular to maintain optimal strength.
  • lengths of rail sections may be connected together to enable compact storage and to enable the length of the rails to be adjusted for use.
  • an extrusion may be drawn to include an inner and outer section with a body arranged between. Rungs are arranged between the rails to form a ladder and may be circular or triangular in cross-section.
  • the rungs may be removably connected to the rails, for example being connected with bolts. This permits the ladder apparatus to fully disassembled and packed into a compact container when not in use; or modified for use with non-standard solar panels. In other embodiments the rungs may be welded or bonded to the rails.
  • upper and lower rungs may be provided to create some rungs closer to the solar panel and some rungs further away from the solar panel. This may help an operative to best position themselves on the ladder depending upon the works to be carried out.
  • a lower rung may extend between lower rail sections and an upper rail may extend between upper rail sections.
  • the rungs may all be in the same alignment, for example being substantially central extending from the body of the pair of opposed rails.
  • the rungs of the ladder may be located in pairs so that, for example, rungs are provided between rails of a ladder and extend outwards from the ladder, thereby enabling a user to step beyond the parallel rails.
  • the rungs or sets of rungs of the ladder may be offset on the rails, for example some rungs on a lower rail (lower rungs) may have a different spacing to rungs positioned on an upper rail (upper rungs).
  • lower rungs may be arranged intermittently further along the rails than the upper rungs.
  • the sets or rungs may be arranged to provide support for a user when climbing the structure, and the sets of rungs may provide a substantially horizontal alignment when the structure is provided at a known photovoltaic array angle horizontally and vertically.
  • the rungs may be shaped and dimensioned to provide a surface that is horizontal in use, in this way items such as tools can be rested on the rungs to provide a work surface at height.
  • the horizontal surfaces of the rungs may include lips to prevent items from falling from a rung.
  • the rungs may comprise one or more coaxial or telescopic portions so as to enable adjustment of a width or length of the ladder.
  • the rungs may be coloured so as to be clearly visible to user, for example the rungs may have black and yellow stripes.
  • the ladder includes an elongate sheet of material arranged below the rungs.
  • the elongate sheet provides a protective layer between the user and the solar panel and serves to prevent dropped items from damaging the solar panel.
  • the ladder apparatus may include attachment means for receiving the elongate sheet of material.
  • the rails may include projections upon which the elongate sheet rests in use.
  • the projections may be provided on the sliding bracket. In this way the elongate sheet is located between the rails. In some embodiments projections are attached at a pivot so that the projections can be moved in order to engage with and secure the elongate sheet in place.
  • the ladder apparatus may include an attachment point for the elongate sheet, such as bolt on connection or a clamp.
  • the elongate sheet of material is formed from a strong, lightweight material such as a synthetic plastics material.
  • the sheet may include a strengthened edge, section or region, such as metal, or metal alloy edging to provide improved rigidity.
  • a strengthened edge, section or region such as metal, or metal alloy edging to provide improved rigidity.
  • the edge is provided along the elongate parallel sides of the sheet.
  • the edging for example, may be attached to the sheet by adhesive or may be bolted to the sheet.
  • the elongate sheet may be transparent or translucent to enable visibility to the panel whilst the ladder is in use and so as not to inhibit energy generation.
  • each rung may include a harness anchor for receiving a safety line.
  • the harness anchor has an attachment point in the form of an aperture through which a safety line, or clip attached to a safety line, can be secured. In this way a user can move the safety line from rung to rung as the move up and down the ladder.
  • the ladder apparatus has a handle provided at each end of the rails. The handle enables the ladder part of the ladder apparatus to be moved to and positioned over a solar panel.
  • each handle is attached at a pivot so that the handle can pivot relative to the rails.
  • the handle may be connected to the rails by a pin-in-recess arrangement or similar means that permits quick and easy removal.
  • the pin may be provided on a tether to prevent the pin being separated from or falling from the apparatus.
  • the handle may be associated with a means of locking movement of the handle with respect to the rails. In this way the handle can be arranged to extend at a different angle relative to the rails.
  • the handles fold downwards towards the ground when the ladder apparatus is in position.
  • the ladder may provide addition rungs that enable a user to step more easily up to the solar panel.
  • the portions of the handle that are stepped on may be coloured so as to be clearly visible to a user. These portions may also have a grip surface to prevent a user slipping during use.
  • handles may be used to arrange the ladder at the desired angle so that the structure can be walked over a solar panel or an array of solar panels.
  • the rungs have a grip surface so that a user is less likely to slip when using the ladder apparatus.
  • the rungs may include padding for increased comfort during use. For example a user may need to rest against the rungs whilst maintaining the solar panel and if the run is padded this may prevent or reduce the likelihood of the user being bruised.
  • the padding may extend over part or substantially the entire rung. Alternatively a separate pad may be provided which fits over the rungs so as to enable a user to kneel comfortably and perform installation, cleaning, repair or maintenance duties.
  • the array Once placed into position the array can be accessed from ground level by stepping up onto the first stepping bar whilst holding on for extra safety. The user can manoeuvre all the way to the top of the module array to install panels or carry out maintenance as desired.
  • the apparatus provides a valuable tool for operations and maintenance (O&M) of solar farms.
  • O&M operations and maintenance
  • the apparatus solves the problem of maintenance by allowing users to gain access onto the solar array without transferring any weight of the frame or user(s) onto the solar panels.
  • the ladder apparatus includes a trolley adapted to receive the ladder and transport it to the location of use.
  • the trolley is adapted to securely and to hold the assembled ladder.
  • the trolley is sized and dimensioned so as to be suitable for rolling on tracks so that the assembled ladder apparatus can be rolled to the desired location, spanning the solar array, and then be deployed.
  • the trolley has wheels suitable for rolling over a face of a module, for example wheels with pneumatic tyres.
  • the trolley includes buckets for receiving the distal end of the hooks.
  • the hooks are spaced apart from the solar panel, or array, during transport.
  • the buckets may be moveable so as to enable the sliding brackets to be positioned at the desired locations for use before placing on the trolley. In this way the buckets can be move to the necessary position for receiving the hooks.
  • a means for securing the trolley to the ground is provided.
  • the means include at least one ground anchoring peg, each peg connected to the trolley by a line so that the peg can be driven into the ground to prevent movement of the trolley along the solar panel.
  • a pair of ground anchoring pegs is provided at each end of the trolley providing four attachment points to the ground.
  • the trolley is also suitable for rolling the ladder over the ground to reach the solar panel. It is appreciated that the trolley may be adapted for different uses, for example having wheels suitable for the ground and wheels suitable for a solar panel.
  • the ladder apparatus may be provided with a tracker to monitor location of the ladder apparatus.
  • a tracker to monitor location of the ladder apparatus.
  • Sensors or imagers such as cameras may be provided to obtain evidence of an event and safe use of the ladder on solar panels. In this way failure to use the ladder apparatus can be detected which would indicate that a cleaning or maintenance event has not occurred.
  • sensor or camera data confirms safe usage to be easily monitored.
  • the use of a tracker can also enable location of ladder apparatus to be recorded, for example for storage purposes or logistics of supplying or hiring a ladder to a customer or maintenance team.
  • the tracker is a surface mounted device with global positioning system (GPS or GSM) means.
  • the tracker may have anti-tamper means so that location data cannot be adjusted or prevented from being sent.
  • Figure 1 shows a perspective view of an embodiment of the apparatus in use on a solar panel array
  • Figure 3 shows a detail view of the embodiment as shown in Figure 2;
  • Figure 4 shows a detail view of the embodiment as shown in Figure 2;
  • Figures 5A, 5B and 5C shows a third embodiment of the ladder apparatus
  • Figure 6 shows an end view of the second embodiment of the ladder apparatus
  • Figure 7 shows a side view of the third embodiment of the ladder apparatus
  • Figures 8A and 8B show handles of a ladder apparatus
  • Figures 9A to 9F show various views of a rung;
  • Figures 10A to 10D show various views of a safety line attachment point;
  • Figures 1 1 A an 1 1 B shows a rung section and a rail section;
  • Figure 12 show side view of a pair of rails;
  • Figure 13 shows and alternative embodiment of rail section
  • Figures 14A to 14D show an anchor bracket
  • Figures 15A and 15B show a trolley and ladder arranged on the solar panel
  • Figure 16 shows an alternative embodiment of the sliding bracket including a projection for receiving the elongate sheet.
  • the method of using the ladder apparatus includes the following steps.
  • the area of use Before the ladder apparatus is deployed the area of use must be identified and a suitable plan on how to access the area determined along with a safety check for any dangers.
  • the ladder apparatus is delivered and assembled and the sliding brackets are positioned as per the physical on site measurements of the solar panel(s).
  • the ladder is lifted into position, typically by two persons, using the handles (one person located at the back and the other at the front of the array) taking care to ensure the hooks associated with the sliding brackets pass through the gaps in between the solar panels and locate correctly onto the frame or into the anchor brackets mounted on the frame.
  • the person standing at the back of the solar panel can visually guide on this step.
  • a designated person fitted in a harness with a restricted lanyard for connecting to the rungs can begin to use the ladder.
  • the user can reach the ladder by using the bars associated with the handle as steps to the ladder.
  • the carrier frame If the carrier frame is to be used it must first be placed into position on the solar panel.
  • the trolley is anchored to the ground using ground pegs to prevent it from moving away on its own. Once the trolley is in position the ladder can then be lifted/positioned by two persons onto the trolley, aligning the hooks with buckets on the trolley.
  • the ground anchor pegs can be removed and the apparatus can be rolled along the solar panel(s) to the desired position.
  • the trolley is stopped adjacent to where the ladder is required.
  • the trolley is once again fixed in position by ground anchor pegs.
  • anchor brackets can be mounted on the solar panel for receiving the hooks. Care must be taken to ensure cables are not impinged.
  • the ladder can be reloaded to the trolley, the trolley repositioned and the ladder deployed at a second location.
  • the pictured embodiment of the ladder apparatus 100 comprises two rails 10 comprising square box tube sections welded together in parallel with rungs 20 running between.
  • the rails 10 comprise two vertically spaced apart rail sections 1 1 A (upper rail section), 1 1 B (lower rail section) with bracing 12 therebetween to give the rails 10 a rigid strength over a long distance.
  • FIG. 1 Various forms or bracing 12 are provided.
  • Figures 1 , 3, 4, 5, 7, 12, 14A, 14B and 15 show rails 10 with diagonal bracing 12.
  • Figure 13A shows an alternative bracing with the upper and lower rail section connected by a sheet with circular cut outs 10A.
  • the upper rail section 1 1 A is tubular, the lower rail section 1 1 B is U-shaped
  • the rails and rungs are formed from aluminium so as to be strong, durable and lightweight.
  • top face of the ladder further comprises a plurality of rungs 20 periodically spaced apart and consisting of box section tube aluminium welded onto rails 10 to create steps which the user uses to access to the top of the array in use.
  • the lower rail 1 1 B may have a plurality of basal rungs 20B arranged less frequently between the rails 10, so as to provide a sturdy construction.
  • Such basal rungs may be offset so as to provide a substantially horizontal alignment with the upper rungs in use.
  • the rungs 20, as shown in the first embodiment ( Figure 1 ), may have a foam or rubber coating or padding 21 for comfort and to protect the knees.
  • the padding 21 is arranged proximate the rails 10, providing approximately a third coverage at each end wherein a central part of the rungs 20 are not covered. In this way the user is enabled to stand on the central part of the rung 20 without risking slippage of feet or padding.
  • the rails 10 comprise an upper rail 1 1 A, and a lower rail 1 1 B, wherein the bracing 12 is arranged to extend in a zigzag arrangement at 45 degrees to the top and bottom rails 1 1 A, 1 1 B.
  • the apparatus further comprises a handle 30 at each end of the ladder.
  • the handle 30 secures to both rails 10 when in use. Once the ladder has been carried to the location of use the handles can be folded downwards to the ground to provide legs.
  • the legs may be variable in angle with respect to the rails 10.
  • the legs may also be telescopic so as to variable with regards to height.
  • the handle 30 on the top enables the ladder 30 to be carried and positioned carefully into place where required, wherein the top handles may be large so as to allow the apparatus to be lifted up around 2-3 metres high dependant on the array.
  • Such handles may also be rubber/plastic coated for comfort and health and safety reasons.
  • the coating is also preferably non-conductive.
  • the apparatus comes in two parts and will be assembled on site when needed so as to be easier to transport.
  • Figure 2 shows a second embodiment of the ladder apparatus with a hook 50 suspended from a sliding bracket (not shown) extending downwards between adjoining solar panels 500.
  • the hook 50 is F-shaped with a distal hook below the solar panel and a second hook visible.
  • FIG. 3 shows a hook 50 extending from a sliding bracket 40.
  • the hook 50 is welded to the sliding bracket 40.
  • the sliding bracket 40 has a grub screw 41 for locking the sliding rail in place.
  • the hooks 50 are formed of 10mm aluminium plate which is small enough to fit in between the lateral gaps between modules 500 and make contact with the sturdy structure frame system underneath the solar panels 500.
  • the sliding brackets 40 may include a plurality of hooks, or displaceable hook, so as to adjust to different depths.
  • the bracing 12 provided between the upper and lower rails 1 1 A, 1 1 B further includes orthogonal bars 13 and bars 14 parallel to the top and bottom rails 10.
  • the rails 10 provide a body along which a sliding bracket 40 can slide.
  • the sliding brackets 40 extend from and below the lower rail 1 1 B.
  • the sliding bracket 40 is adapted to fit about the rail 1 1 B.
  • the sliding bracket has a channel that corresponds to the rails 10.
  • the channel may include a return 43 (see Figure 5C) so as to secure the sliding bracket about the rail during sliding.
  • the sliding bracket 40 has apertures 44 that correspond to apertures on the rails 10.
  • the lower rail 1 1 B has an aperture through which a fixing can be arranged. In this way the sliding bracket 40 can be locked to the rail in a fixed position, for example by a nut a bolt or similar fixing means.
  • the sliding bracket does not include a return and is held in position by a fixing means.
  • the sliding bracket 40 can be locked in place by a screw threaded locking means 41 .
  • Other locking mechanism may be used, for example a pin and hole arrangement.
  • Figures 3 and 4 there is shown a grub screw arrangement in which when the grub screw is tightened by turning the grub screw 41 causes contact of the grub screw with the lower rail 1 1 B to provide a friction lock.
  • the ladder apparatus thereby transfers the weight of the ladder and user(s) onto the subordinate array frame underneath the modules to leave zero pressure on the solar panels and the glass of the solar panels.
  • FIG. 5 shows a third embodiment 300 of the ladder apparatus.
  • the rails 10 are formed from a metal extrusion with the lower section of the extrusion adapted to receive a sliding rail 40.
  • the sliding rail 40 is adapted to hold an elongate member 60.
  • the sliding bracket 40 has an opening 42 for receiving the elongate member 60.
  • the elongate member 60 extends between a pair of sliding brackets 40.
  • the elongate member hangs below the rails 10.
  • the elongate member 60 also receives connectors 61 which are slidably mounted on the elongate member and are also adapted to receive the hooks 50.
  • the connectors 61 shown in Figure 5 have square sections 62 that corresponds to the elongate member 60.
  • the connectors 61 can be slid on the elongate member 60 to adjust position of the hooks 50.
  • the connectors have a clamp 63 for receiving a hook 50.
  • the arm 51 of the hook 50 is sandwiched between the clamp 63.
  • Corresponding apertures are aligned and a bolt is passed through the aligned apertures in order to form a connection.
  • Each rung 20 has a safety line attachment point 22 for securing the safety of user climbing the ladder apparatus.
  • the safety line anchor point has an aperture 22A for receiving a line or clip.
  • the ladder apparatus 300 in Figure 5 also has an elongate sheet 70 that prevents dropped items from contacting the solar panel.
  • Figure 6 shows an end on view of the third embodiment of the ladder apparatus.
  • Figure 7 shows a side view of the third embodiment of the ladder apparatus.
  • Figures 8A and 8B shows an example of a pair of handles 30A, 30B and indicated preferred dimensions.
  • the larger handle 30A shown in Figure 8A is intended to enable the ladder apparatus to be lifted over the highest part of the solar panel.
  • Close up image C shows how two box sections weld together such that part of the handle can slide inside another part.
  • Close up B shows a close up of two box sections welded together and then welded to the outside box allowing the internal frame to slide inside. This is also a crimp box bracket with a hole and a rivet nut fitted.
  • the smaller handle 8B is arranged in use at the lowest part of the solar panel and may also serve to provide additional steps to the ladder.
  • Close up A shows two box sections welded together to the outside box allowing the internal frame to slide inside.
  • FIG. 9 shows different views of a second embodiment of a rung 20.
  • the rung 20 as a triangular cross section and includes an internal rib.
  • the rung ends includes a plate 23 that is for joining the rung to the rails.
  • the rungs 20 can be bolted to the rails 10.
  • Figure 10 shows different views of the safety line attachment point 22.
  • a first portion of the safety line attachment point 22B has an aperture 22A.
  • the first portion is angled with respect to the second portion 22C that attaches to the rung 20. This angle makes it easier to connect the safety line to the aperture 22A without the rung interfering.
  • the angle between the portion 22B and 22C is 146 degrees.
  • Figure 1 1 shows a cross section of the rung 20 (Figure 1 1 A) and a cross section of the rail 10 ( Figure 1 1 B). Preferred dimensions are indicated.
  • Figure 12 shows side views of the rails 10 indicating preferred dimensions.
  • Figures 13A, Figure 13B shows an alternative embodiment of rail section 10 in which the rail has circular cut out sections to reduce 10A the overall weight of the rail and to improve strength.
  • Figure 13A shows a side view of the rail 10 with circular cut out sections 10A arranged along the length of the rail 10.
  • Figure 13B shows a cross section of the rail 10 with a tubular upper rail 1 1 A and a U- shaped lower rail 1 1 B.
  • Figure 14 shows an anchor bracket 80 that may be hung from the frame of a solar panel.
  • the anchor bracket 80 is for receiving the hooks 50 of the ladder apparatus 100, 200, 300, if the frame of the module does not provide a suitable mounting position for the hooks.
  • the anchor bracket 80 has two clips 81 that hook over part of the frame, in use, so as to provide a channel 82 in the correct orientation for receiving a hook 50.
  • FIG 15 shows a trolley 90 arranged on a solar array 500.
  • the trolley 90 has a frame 93 with six wheels 92 arranged on the face of the modules 500 and a pair of wheels 94 arranged on a top, side edge of the solar panel (See Figure 14B).
  • the frame 93 is formed from tubular sections.
  • the wheels 92 are spaced to correspond to the edges of the solar panels 500.
  • the wheels 92 that contact the face of the solar panel 500 have pneumatic tyres.
  • the wheels 94 that travel along the side edge of the module 500 are smaller and may not be pneumatic, for example having solid tyres.
  • the trolley 90 has four buckets 91 for receiving the hooks of the ladder.
  • the buckets 91 locate the hooks and ensure the ladder stays in position as it is rolled over the solar array.
  • the buckets 91 are mounted on the frame 93.
  • the position of the buckets 91 can be adjusted to correspond to the position of the hooks. Once the desired location is reached the ladder 100 can be lifted from the trolley 90 and position of the solar array 500.
  • Figure 16 shows an alternative embodiment of the sliding bracket 40 including a projection 45 for receiving the elongate sheet 70.
  • the projection 45 provides a ledge on which the sheet is positioned in use.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Structural Engineering (AREA)
  • Ladders (AREA)

Abstract

La présente invention concerne un appareil d'échelle pour la maintenance d'un panneau solaire ou d'un réseau de panneaux solaires. L'appareil d'échelle comporte une paire de rails sensiblement parallèles reliés par une pluralité de barreaux et une feuille allongée disposée entre les barreaux et le panneau solaire. Les rails sont conçus pour recevoir au moins un support coulissant. Chaque support coulissant maintient au moins un crochet qui s'étend à partir du support coulissant pour permettre la mise en prise du crochet avec une partie d'un panneau solaire de façon à positionner l'échelle sur le panneau solaire. Un moyen de verrouillage est fourni pour fixer chaque support coulissant en position sur un rail.
PCT/IB2018/054158 2017-06-09 2018-06-08 Appareil d'échelle pour un panneau solaire ou un réseau solaire WO2018229617A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GBGB1709189.3A GB201709189D0 (en) 2017-06-09 2017-06-09 Apparatus for maintenance of a solar array
GB1709189.3 2017-06-09
GB1800715.3 2018-01-17
GB1800715.3A GB2563306A (en) 2017-06-09 2018-01-17 A ladder apparatus for maintenance of a solar array

Publications (1)

Publication Number Publication Date
WO2018229617A1 true WO2018229617A1 (fr) 2018-12-20

Family

ID=59358364

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2018/054158 WO2018229617A1 (fr) 2017-06-09 2018-06-08 Appareil d'échelle pour un panneau solaire ou un réseau solaire

Country Status (2)

Country Link
GB (2) GB201709189D0 (fr)
WO (1) WO2018229617A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114251049A (zh) * 2020-09-22 2022-03-29 中电投沽源新能源发电有限公司 一种用于光伏组件安装更换的专用便携爬梯

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2484520A1 (fr) * 1980-05-19 1981-12-18 Chassant Ste Indle Dispositif pour rendre rigide temporairement une echelle de toit souple
DE19815236A1 (de) * 1998-04-04 1999-10-14 Christian Guenther Stehleiter zum Transport von Gegenständen
JP2001012076A (ja) * 1999-04-28 2001-01-16 Sekisui Chem Co Ltd 屋根上作業用梯子
US20110247895A1 (en) * 2010-04-09 2011-10-13 Smith Leon B Walk through ladder platform
AU2014101465A4 (en) * 2014-12-13 2015-02-05 Anderson, Adam James MR GPS RFID Scaffold Information Tag Holder.
JP2016084637A (ja) * 2014-10-27 2016-05-19 積水化学工業株式会社 屋根用足場及びその設置構造

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2902993A1 (de) * 1978-02-06 1979-08-09 Primerano Verbesserung bei den leitern
US4483416A (en) * 1983-12-08 1984-11-20 Garcia Eduardo L Height adjustable roof engaging attachment for ladders
FR2694783B1 (fr) * 1992-08-14 1994-11-04 Quille Entreprise Dispositif de sécurité pour éviter le renversement d'une échelle.
DE19755390C2 (de) * 1997-12-12 2001-09-20 Metallbau Coenen Gmbh Leitersicherung
CA2914405C (fr) * 2013-06-05 2021-02-09 Od Tech Pty Limited Mecanismes de securite d'echelle

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2484520A1 (fr) * 1980-05-19 1981-12-18 Chassant Ste Indle Dispositif pour rendre rigide temporairement une echelle de toit souple
DE19815236A1 (de) * 1998-04-04 1999-10-14 Christian Guenther Stehleiter zum Transport von Gegenständen
JP2001012076A (ja) * 1999-04-28 2001-01-16 Sekisui Chem Co Ltd 屋根上作業用梯子
US20110247895A1 (en) * 2010-04-09 2011-10-13 Smith Leon B Walk through ladder platform
JP2016084637A (ja) * 2014-10-27 2016-05-19 積水化学工業株式会社 屋根用足場及びその設置構造
AU2014101465A4 (en) * 2014-12-13 2015-02-05 Anderson, Adam James MR GPS RFID Scaffold Information Tag Holder.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114251049A (zh) * 2020-09-22 2022-03-29 中电投沽源新能源发电有限公司 一种用于光伏组件安装更换的专用便携爬梯

Also Published As

Publication number Publication date
GB2563306A (en) 2018-12-12
GB201709189D0 (en) 2017-07-26
GB201800715D0 (en) 2018-02-28

Similar Documents

Publication Publication Date Title
US8596414B1 (en) Mobile steep roof scaffold system
US11180956B2 (en) Ladder docking device
US7735606B1 (en) Scaffold support platform
US10071268B2 (en) Roof-mounted fall-arrest safety device
US9234389B2 (en) Ladder rest and restraining device
US8186479B2 (en) Roof scaffolding system
WO2015020817A1 (fr) Système d'attache-pied sur un toit en pente
AU2022202476B2 (en) Support Apparatus
US11286114B2 (en) Solar module carrier
US6994188B2 (en) Ladder support attachment
US5005668A (en) Ladder step support
WO2018229617A1 (fr) Appareil d'échelle pour un panneau solaire ou un réseau solaire
US20050189171A1 (en) Safety system and method of use for high workers
US8505685B1 (en) Roof scaffolding system
US9206618B2 (en) Edge protection system using cantilevered counterweight
US20210017778A1 (en) Roofing guard for carpenters
AU2009225338B2 (en) An adjustable roof platform support device
US20050224287A1 (en) I-beam mounted work ladder
US9587408B1 (en) Roof workman's utility box
US10569110B2 (en) Outrigger-equipped roof-mounted fall-arrest safety device
CN220267150U (zh) 光伏组件安装维护装置
CA2980829A1 (fr) Systeme d'echafaudage pour toiture
CN217681535U (zh) 一种用于安装光伏组件的活动爬梯
US20220204272A1 (en) Solar module carriers and related systems
CN214834561U (zh) 一种光伏电站运维架

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 18742597

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 18742597

Country of ref document: EP

Kind code of ref document: A1