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
  • E02D29/14—Covers for manholes or the like; Frames for covers

Definitions

• the present invention relates to a manhole, of the type comprising a frame delimiting a central frame axis and being provided with a frame hinge, a covering element of the frame, such as a buffer, provided with a hinge pin.
• a cover member, the frame and cover member knuckles being adapted to allow tilting of the cover member relative to the frame about an axis of articulation between a closed position and a release position, the frame and cover member hinges being adapted to be disengaged from each other at least when the cover member is in the disengaged position, and a locking member adapted to block the disengagement of the knuckle covering element of the frame knuckle when the covering element is in the disengaged position, the locking element comprising a base body and a foot.
• Document EP 1 160 382 discloses a manhole of this type.
• This sight has a locking element to prevent a disengagement of the buffer knuckle and the frame knuckle.
• the locking member has a base body and a foot. The foot is directed radially towards the central axis of the gaze and is placed entirely inside the frame.
• the object of the invention is to further increase the safety of a roadside survey buffer against theft with simple and economical means.
• the subject of the invention is a manhole of the type indicated above, in which the foot is directed radially outwards with respect to the central frame axis.
• the manhole according to the invention comprises one or more of the following characteristics:
• the frame comprises an outer frame wall and the foot overlaps the outer frame wall;
• the foot extends at least partially outside the outer frame wall;
• the frame comprises a lower frame surface intended to be applied on a base, and the foot extends below the lower frame surface;
• the frame comprises a cavity which is adapted to receive at least a part of the base body of the locking element; the foot is constituted by a projection extending perpendicularly with respect to the basic body;
• the locking element comprises a locking member received in a housing defined by the frame, the locking member forming a stop for opposing the release of the covering member knuckle;
• the frame knuckle delimits a knuckle opening that can be traversed by the covering element knuckle during engagement or disengagement, and when the locking member is in its housing, it partially covers this knuckle opening; and the cover element knuckle;
• FIG. 1 is a sectional view along a radial plane of the region of articulation of a manhole according to the invention, comprising a locking element;
• FIG. 2 is a top view of the articulation region of the manhole of Figure 1;
• - Figure 3 is a view similar to that of Figure 2, in the absence of the locking element;
• FIG. 4 is a side view of the blocking element of the manhole of Figure 1;
• Figure 5 is a perspective view of the locking member of Figure 4.
• Figure 1 is partially shown a manhole according to the invention, designated by the general reference 2.
• the manhole 2 comprises a frame 4 and a covering element of the frame 4, in this case a buffer 6.
• the frame 4 defines an opening 8 and is provided with an inner rim 10 on which is disposed a seal of soundproofing (not shown).
• the frame 4 has an upper surface 12 extending in an upper plane PS-PS, and a lower surface 14 extending in a lower plane Pl-Pl. In the installed state, the sur- The upper face 12 of the frame is substantially flush with a ground surface 18.
• the frame 4 defines a central frame axis XX extending substantially perpendicular to the PS-PS plane.
• the manhole 2 is disposed on a base 15 of sealing material 16 such as concrete.
• the frame 4 is partially coated with the sealing material 16.
• the frame 4 is delimited by an outer frame wall 20.
• This outer frame wall 20 has a substantially frustoconical shape around the central frame axis X-X.
• the buffer 6 comprises a closed web 22 adapted to cover the opening
• the manhole 2 is provided with a hinge 24 formed by a frame hinge 26 and a covering element knuckle 28.
• the frame knuckle 26 is integral with the frame 4 and the covering element knuckle 28 is integral with the buffer 6.
• the frame knuckle 26 and the covering member knuckle 28 are adapted to allow the pad 6 to tilt relative to the frame 4 about an axis of articulation YY and this between a closed position, as shown in FIG. 1, and an open position in which the buffer 6 substantially releases the opening 8 of the frame 4.
• the open position corresponds to a maximum open position of the buffer 6, in which the web 22 is oblique with respect to the upper surface
• the pad 6 is movable into any intermediate position between the closed position and the open position.
• the manhole 2 comprises an additional hinge similar to the hinge 24 and coaxial therewith.
• the additional hinge is symmetrical with the hinge 24 relative to the sectional plane 11 of Figure 1. Only the hinge 24, visible in Figure 1 and shown at the top in Figure 2, will be described in detail later.
• the covering member knuckle 28 of the hinge 24 presents a view from above L-shape. It comprises an arm 29 extending substantially radially outwards from the edge of the web 22, a pin 30 of axis YY disposed at the free end of the arm 29, and a pin 31.
• the pin 30 has an outer surface 30A in a Y-Y axis cylinder portion intended to cooperate with a hinge surface 26A of the frame hinge 26.
• the lug 31 extends the trunnion 30 along the Y-Y axis by projecting laterally from the arm 29, which gives the lining piece knuckle 28 its L-shape.
• the lug 31 has a flat part 31A.
• the frame knuckle 26 has an upper knuckle opening 32 for engaging the covering member knuckle 28 in the frame knuckle 26.
• the knuckle opening 32 has an L shape corresponding to that of the covering member knuckle 28. It comprises a channel 33 extending in the frame 4 from the edge of the opening 8 for the passage of the arm 29 and the trunnion 30, and a notch 34 extending the channel 33 for the passage of the lug
• the notch 34 is delimited between a flange 35 of the frame 4 and the outer frame wall 20 vis-à-vis.
• the flange 35 partly covers the lug 31 of the covering element knuckle 28 engaged in the frame knuckle 26.
• the rim 35 and the flat portion 31A of the lug 31 are arranged in such a way that the lug 31 can pass through the notch 34 only when the buffer 6 is in an intermediate position of clearance in Ia. - That the web 22 carries with the PS-PS plane an angle of about 90 °. In this release position, the knuckles 26, 28 can be disengaged from one another in a direction extending perpendicularly to the hinge axis Y-Y, thus making it possible to extract the buffer 6 from the frame 4.
• the flat part 31A bears against the lower surface of the rim 35, so that the lug 31 and the flange 35 form a stop at the opening.
• the frame 8 further defines, below the hinge 24, a cavity 38 extending to the bottom surface 14 and opening out of the frame.
• the manhole 2 further comprises a blocking element 40 adapted to block the disengagement of the covering element knuckle 28 from the frame hinge 26, in particular when the buffer 6 is in the disengagement position.
• the establishment of the locking element 40 is effected by the underside of the frame 4, by introducing it through the cavity 38 when the buffer is in the open position.
• This locking element 40 is shown in detail in FIGS. 4 and 5. It comprises a base body 42, a foot 44 and two locking members 46.
• the base body 42 is a substantially trapezoidal plate having two projections 42A on its large base.
• the foot 44 is a plate perpendicularly projecting from the base body 42 to its small base.
• a locking member 46 is disposed at the end of each projection 42A and perpendicularly protrudes from this projection.
• the locking members 46 extend from one side of the base body 42 opposite the side of the foot 44.
• a locking member 46 is associated with the hinge 24 while the other locking member 46 is associated with the additional hinge .
• the frame 4 defines for each hinge a housing 48 ( Figure 1) adjacent to the hinge opening 32 and having a shape complementary to that of the associated locking member 46.
• FIGS. 1 and 2 illustrating the sheath view 2 in the presence of the locking element 40
• the locking member 46 overlaps the notch 34 of the knuckle aperture 32, and thus prevents the withdrawal of the lug 31.
• the locking member 46 thereby opposes the disengagement of the knuckle member 28 of the frame knuckle 26 even if the buffer 6 is in its disengaged position.
• the foot 44 is directed radially outwardly of the central frame axis XX and extends below the lower frame surface 14. In addition, the foot 44 radially overlaps the outer frame wall 20 and extends partially outside the outer frame wall 20.
• the foot 44 and the lower part of the base body 42 are completely covered by sealing material 16.
• the design of the base body 42 and the foot 44 is particularly advantageous since, in the case of an attempt to tear the locking members 46, for example by the introduction of a lever between the locking members 46 and the housings 48, the sealing material 16 is biased mainly in compression at the foot 44. In FIG. Accordingly, the blocking member 40 withstands high forces.
• the fact that the foot 44 extends radially outwardly allows to design it with a large area without interfering with the opening to be covered by the gaze, which further increases safety.
• the locking element 40 can be used with existing eyes and does not require modification of the frame.

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• Engineering & Computer Science (AREA)
• Environmental & Geological Engineering (AREA)
• Life Sciences & Earth Sciences (AREA)
• General Life Sciences & Earth Sciences (AREA)
• Mining & Mineral Resources (AREA)
• Paleontology (AREA)
• Civil Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Structural Engineering (AREA)
• Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
• Body Structure For Vehicles (AREA)
• Hinges (AREA)

Priority Applications (4)

Applications Claiming Priority (2)

Publications (2)

Family

ID=39362337

Family Applications (1)

Country Status (8)

Families Citing this family (3)

Citations (3)

Family Cites Families (5)

• 2007
  • 2007-10-31 FR FR0758733A patent/FR2922908B1/fr active Active
• 2008
  • 2008-10-28 EP EP08845215.6A patent/EP2220296B1/fr active Active
  • 2008-10-28 ES ES08845215.6T patent/ES2643320T3/es active Active
  • 2008-10-28 WO PCT/FR2008/051942 patent/WO2009056758A2/fr active Application Filing
  • 2008-10-28 PT PT88452156T patent/PT2220296T/pt unknown
  • 2008-10-28 CN CN200880119390.7A patent/CN101889115B/zh active Active
  • 2008-10-28 BR BRPI0818485-2A patent/BRPI0818485B1/pt active IP Right Grant
  • 2008-10-28 RU RU2010121902/03A patent/RU2460849C2/ru not_active IP Right Cessation

Patent Citations (3)

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