Classifications

• • E—FIXED CONSTRUCTIONS
  • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
  • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
  • E02D29/00—Independent underground or underwater structures; Retaining walls
  • E02D29/12—Manhole shafts; Other inspection or access chambers; Accessories therefor
  • E02D29/127—Manhole shafts; Other inspection or access chambers; Accessories therefor with devices for impeding fall or injuries of persons
• • E—FIXED CONSTRUCTIONS
  • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
  • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
  • E02D29/00—Independent underground or underwater structures; Retaining walls
  • E02D29/12—Manhole shafts; Other inspection or access chambers; Accessories therefor
  • E02D29/14—Covers for manholes or the like; Frames for covers
• • E—FIXED CONSTRUCTIONS
  • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
  • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
  • E02D29/00—Independent underground or underwater structures; Retaining walls
  • E02D29/12—Manhole shafts; Other inspection or access chambers; Accessories therefor
  • E02D29/14—Covers for manholes or the like; Frames for covers
  • E02D29/1418—Covers for manholes or the like; Frames for covers with implements to assist in lifting, e.g. counterweights, springs
• • E—FIXED CONSTRUCTIONS
  • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
  • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
  • E02D29/00—Independent underground or underwater structures; Retaining walls
  • E02D29/12—Manhole shafts; Other inspection or access chambers; Accessories therefor
  • E02D29/14—Covers for manholes or the like; Frames for covers
  • E02D29/1481—Security devices, e.g. indicating unauthorised opening
• • E—FIXED CONSTRUCTIONS
  • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
  • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
  • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
  • E06B9/02—Shutters, movable grilles, or other safety closing devices, e.g. against burglary
  • E06B9/04—Shutters, movable grilles, or other safety closing devices, e.g. against burglary of wing type, e.g. revolving or sliding
• • E—FIXED CONSTRUCTIONS
  • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
  • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
  • E06B5/00—Doors, windows, or like closures for special purposes; Border constructions therefor
  • E06B5/01—Trap-doors

Definitions

• the present invention relates to a support frame and safety fall arrester assembly hinged to one side of the support frame.
• a road system comprising a solidary frame of the ground or a roadway and the opening of which provides access to a chimney inspection or inspection of a underground network, a crown member pivotally mounted relative to one side of the frame between a folded position closing the opening of the frame and a standing position of clearance of the opening of this frame.
• this road device also comprises a safety fall arrester mounted hinged to one of the sides of the frame perpendicular to the side to which is articulated the cap element, so that the grid can be brought to a position folded closing the opening of the frame when the cap member occupies its standing position of release of this opening.
• the permanent joint location to the side of the frame of the fall protection grid may be such that the grid, when it is standing, causes discomfort during an intervention in the underground network, especially during the passage of cables in this network through the opening of this frame.
• the present invention aims to overcome the above disadvantage of known road devices.
• the support frame assembly and single fall protection safety grid mounted articulated to one side of the support frame so as to occupy a standing position of clearance of the opening frame or folded position closing the opening of the frame is characterized in that the grid can be mounted hinged to the opposite side of the frame.
• the frame comprises at each of its two opposite sides a hinge means and the grid has on one of its sides a hinge means that can be removably attached to one or other of the means of articulation of the frame.
• the hinge means on each side of the frame comprises two spaced spaced clevises on the side of the frame along the latter and the articulation means of the grid comprises two integral tabs on the side of the grid perpendicular to it. and removably secured by bolts respectively to the yokes of the frame.
• the grid comprises two lugs integral with its side opposite to that comprising the hinge means and being able to bear, in the folded position of the grid, on the side of the frame opposite to that to which the grid is articulated.
• the grid may be self-locking in its upright position.
• each tab located between two branches of a yoke comprises an oblong slot through which a bolt integral with these branches and which allows the grate to descend by gravity to its upright position until the upper end of the oblong slot comes to bear on the bolt and the lower end of the tab is supported against a back wall of the yoke so as to self-lock the tab in the yoke.
• the grid is held in its upright position by supporting the hinge lugs on the inner face of the corresponding side of the frame.
• the means of articulation of the sides of the frame are secured respectively to two internal walls perpendicular to the sides of the frame and its folded position, the grid is housed in the frame.
• the invention also relates to a road device comprising a frame secured to the ground, a covering element, such as a hatch or a buffer, mounted hinged to one side of the frame between a folded position of closing the opening of the frame and a standing position of clearance of the opening of the frame, and a safety fall arrester mounted hinged to one side of the frame perpendicular to the side of this frame which is articulated the cap element so as to occupy a standing position of release of the opening of the frame or a folded position closing the opening of the frame when the cap member occupies its upright position, and which is characterized in that the grid can be mounted hinged to the opposite side of the frame as described above.
• a covering element such as a hatch or a buffer
• the cap element In the folded position of the grid in the frame, the cap element can be folded into the frame by covering the grid.
• the frame is rectangular.
• Figure 1 is a perspective view of a road device according to the invention.
• FIG. 2 is a top view of the road device of Figure 1 and showing the fall arrest safety grid in its folded position closing the frame of this device;
• - Figure 3 is an enlarged perspective view of a hinge of the grid frame to a standing position of the grid before being locked to the frame; and - Figure 4 is an enlarged sectional view in a vertical plane passing through a hinge tab of the grid.
• the reference numeral 1 denotes a road device, which comprises a frame 2 integral with the ground or a roadway being buried flush with it and a covering element 3, such as a hatch or a buffer.
• the frame 2 is of rectangular shape and the covering element 3, also of rectangular shape, is hingedly mounted along one of the sides 2a of the frame 2 about a pivot axis XI, X2 to allow at the covering element 3 to pivot between a closed position of closing the opening 0 of the frame 2 to which the covering element 3 fits or fits in the frame 2, and a standing or standing position of opening to clear the opening 0 of the frame 2 to access a chimney inspection or inspection of an underground network.
• the covering element comprises a relatively thin upper rigid plate 3a and four lateral walls 3b integral with the internal face of the plate 3a perpendicularly thereto, stiffening ribs 3c of the plate 3a being provided. perpendicular to the inner face of this plate.
• the covering element 3 and the frame 2 may be made of metal, such as for example steel.
• a crutch 4 has one end hingedly mounted to one of the sides 2b of the frame 2 perpendicular to the side 2a through a yoke 5 pivot axis perpendicular to the side 2b.
• This crutch makes it possible to retain the covering element 3 in its upright position from the opening 0 shown in FIG. 1.
• the end of the stand 4 opposite to the hinge clevis 5 abuts in two ends of two parallel lights 6a made respectively in two parallel plates 6 integral with the corresponding inner side wall 3b of the covering element 3.
• the covering element 3 When the covering element 3 is folded towards its closed position 6 of the opening 0 of the frame 2, the end of the stand 4 slides along the lights 6a to come close to the opposite ends of the lights 6a in the folded position of the cover element so that the stand is in a folded position in the frame 2 along the side 2b .
• the road device 1 further comprises a single fall arrest safety gate 7 mounted articulated by one of its edges 7a relative to the side 2c of the frame 2 opposite and parallel to the side 2b of this frame.
• the grid 7 comprises a plurality of cylindrical parallel bars 7b fixed at their ends respectively by two parallel flat bars 7a, 7c constituting the two sides of the grid 7.
• the grid 7 is articulated relative to the side 2c of the frame 2 along an axis Y1, Y2 parallel to the side 2c and consequently perpendicular to the pivot axis XI, X2 of the covering element 3.
• the grid 7 can pivot between a standing position of the opening shown in FIG. 1 to which it is substantially perpendicular to the plane frame 2 and a folded position closing this opening shown in Figure 2, called fall arrest.
• the grid 7 can also be mounted articulated by its side 7a to the side 2b of the frame 2 opposite the side 2c along an axis Y3, Y4 parallel to the side 2b and, therefore, perpendicular to the pivot axis XI , X2 of the covering element 3.
• the means of articulation of the side 7a of the grid 7 to one or the other of the two sides 2b, 2c of the frame 2 comprise two parallel legs 8 secured to the side 7a substantially perpendicular to the latter being disposed outside the gate.
• the two lugs 8 are respectively fixed in the vicinity of the two ends of the side 7a of this grid.
• the tabs 8 may be attached to the side 7a by welding.
• Each hinge lug 8 has a slot 9 extending longitudinally to the lug 8.
• each lug 8 is in the form of a rigid plate bent substantially at right angles
• one of the branches 8a is integral with a corresponding end of the side 7a of the gate 7 and the other leg 8b comprises the slot 9 extending longitudinally to the branch 8b.
• the articulation means of the grid 7 to the frame 2 also comprise, associated with each side 2b, 2c, two clevises 10 integral with an inner wall 11 of the frame 2 extending in the opening 0 perpendicular to the corresponding side 2b, 2c of the frame 2.
• Each pair of clevises 10 is fixed, for example by welding, perpendicularly to the corresponding inner wall 11 above it.
• the two lugs 8 of the grid 7 are mounted detachably articulated respectively in the two clevises 10 of the wall 11 associated with the side 2c of the frame 2 by means of fixing bolts 12 extending along the axis of pivot Y1, Y2 of the grid 7 relative to the side 2c.
• Each fixing bolt 12 has its threaded rod 12a passing through the two parallel branches 10a of the corresponding yoke 10 perpendicular thereto.
• the diameter of the threaded rod 12a of the bolt 12 is slightly less than the diameter of two coaxial bores 10b formed through respectively the two branches 10a of the corresponding yoke 10.
• the threaded rod 12a of each bolt 12 also passes through the lumen.
• Each clevis 10 also comprises a dorsal wall 10c secured, for example by welding, the two vertical edges located on the same side of the legs 10a of the yoke 10 facing the vertical side 2c of the frame 2, the dorsal wall 10c thus being spaced from this side 2c.
• the gate 7 has at its side 7c opposite the hinge side 7a two brackets 13 fixed, for example by welding by one of their branches to the side 7c outside the gate 7 so that the other branch of each lug 13 extends in a plane parallel to the plane of the grid 7 above the side 7c.
• Each bracket 13 comprises integral with the upper face of the free leg of this tab an external grip 14 and the side 7c of the grid 7 is also provided with an external grip 15 located substantially in the middle of this side .
• the position of the pivot axis Y1, Y2 of the grid 7 relative to the side 2c of the frame 2 and the relative positions of the support lugs 13 relative to the side 7c of the grid 7 are such that in the folded position of this grid, the latter is housed in the sides 2a to 2d of the frame 2 substantially halfway up these sides.
• the tilting of the grid 7 between its folded and standing positions is facilitated by the lights 9 of the lugs 8 through which the fixing bolts 12 engage.
• the hinge means of the grid 7 relative to the corresponding sides 2b, 2c of the frame 2 constituted by the pairs of clevis 10, the bolts 12 and the lights 9 are designed to self-lock the grid to its standing position. Indeed, when the gate 7 switches from its horizontal folded position to its substantially vertical standing position shown in Figure 3, the operator releases the gate 7 which descends by gravity from its position in Figure 3 to its position shown in Figure 4 by sliding of the slots 9 of the two tabs 8 relative to the threaded rods 12a of the two bolts 12. In the position shown in FIG.
• each tab 8 bears against the corresponding threaded rod 12a of the bolt 12 and the lower end of the leg 8b of the tab 8 is supported by its rear edge on the inner face of the back wall 10c of the yoke 10 so that the leg 8b of each lug 8 is self-locking in the yoke 10 to prevent the gate 7 from swinging to its folded position closing the opening 0 of the frame 2.
• the hinge lugs 8 can pivot freely on the bolts 12 and be brought in support on the inner face of the corresponding side 2b or 2c of the frame 2 to maintain the grid at this position slightly inclined beyond its position perpendicular to the plane of the frame 2.
• the grid can be mounted articulated reversibly to the sides 2b, 2c of the frame 2 allows to position it when it is in its upright position without causing any inconvenience during a particular operation to be carried out in the underground network through the opening 0, for example by introducing cables through this opening.
• FIG. 2 shows the grid in its folded safety position in the frame 2 preventing anyone from accidentally falling through the opening 0 of the frame 2.
• the grid 7 may be made of steel, stainless steel, composite material and may have a structure not only in bars as described above, but also in lattice, mesh or grating.
• the grid 7 can withstand a range of efforts that can be between about 1500 and 3000 Newtons.
• the grid can be locked at about 90 ° relative to the support frame prevents it from tilting to its horizontal position in the frame even in case of wind or mishandling, thus ensuring an operator entry into the room or lift of it in complete safety;
• the grid is reversible makes it possible to position it on one or the other of the two opposite sides of the support frame, so as not to cause any discomfort when it occupies its upright position, in particular during a intervention in the underground network;
• the opening of the frame is completely clear without the risk of injury to an operator returning to the underground network or coming up from this network through an opening because the means of articulation of the grid are fixed on the horizontal wall, perpendicular to the corresponding vertical side of the frame outside this opening;

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• Engineering & Computer Science (AREA)
• Structural Engineering (AREA)
• Civil Engineering (AREA)
• General Life Sciences & Earth Sciences (AREA)
• Mining & Mineral Resources (AREA)
• Paleontology (AREA)
• Life Sciences & Earth Sciences (AREA)
• General Engineering & Computer Science (AREA)
• Environmental & Geological Engineering (AREA)
• Architecture (AREA)
• Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
• Invalid Beds And Related Equipment (AREA)
• Emergency Lowering Means (AREA)
• Handcart (AREA)
• Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)

Priority Applications (1)

Applications Claiming Priority (2)

Publications (2)

Family

ID=45974390

Family Applications (1)

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Cited By (3)

Families Citing this family (2)

Family Cites Families (4)

• 2011
  • 2011-03-17 FR FR1152214A patent/FR2972735B1/fr active Active
• 2012
  • 2012-03-13 WO PCT/FR2012/050517 patent/WO2012123672A2/fr not_active Ceased
  • 2012-03-13 EP EP12714765.0A patent/EP2686489B1/de active Active

Non-Patent Citations (1)

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