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
  • 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
  • E02D29/1463—Hinged connection of cover to frame
• • E—FIXED CONSTRUCTIONS
  • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
  • E05C—BOLTS OR FASTENING DEVICES FOR WINGS, SPECIALLY FOR DOORS OR WINDOWS
  • E05C17/00—Devices for holding wings open; Devices for limiting opening of wings or for holding wings open by a movable member extending between frame and wing; Braking devices, stops or buffers, combined therewith
  • E05C17/02—Devices for holding wings open; Devices for limiting opening of wings or for holding wings open by a movable member extending between frame and wing; Braking devices, stops or buffers, combined therewith by mechanical means
  • E05C17/04—Devices for holding wings open; Devices for limiting opening of wings or for holding wings open by a movable member extending between frame and wing; Braking devices, stops or buffers, combined therewith by mechanical means with a movable bar or equivalent member extending between frame and wing
  • E05C17/12—Devices for holding wings open; Devices for limiting opening of wings or for holding wings open by a movable member extending between frame and wing; Braking devices, stops or buffers, combined therewith by mechanical means with a movable bar or equivalent member extending between frame and wing consisting of a single rod
  • E05C17/16—Devices for holding wings open; Devices for limiting opening of wings or for holding wings open by a movable member extending between frame and wing; Braking devices, stops or buffers, combined therewith by mechanical means with a movable bar or equivalent member extending between frame and wing consisting of a single rod pivoted only at one end and having an elongated slot
• • E—FIXED CONSTRUCTIONS
  • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
  • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
  • E05F1/00—Closers or openers for wings, not otherwise provided for in this subclass
  • E05F1/08—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings
  • E05F1/10—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings for swinging wings, e.g. counterbalance
  • E05F1/1091—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings for swinging wings, e.g. counterbalance with a gas spring
• • E—FIXED CONSTRUCTIONS
  • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
  • E05Y—INDEXING SCHEME RELATING TO HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS AND DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION, CHECKS FOR WINGS AND WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
  • E05Y2600/00—Mounting or coupling arrangements for elements provided for in this subclass
  • E05Y2600/60—Mounting or coupling members; Accessories therefore
  • E05Y2600/626—Plates or brackets
• • E05Y2999/00—

Definitions

• Road equipment equipped with a safety device for at least one buffer of the equipment equipped with a safety device for at least one buffer of the equipment.
• the present invention relates to road equipment comprising at least one pivotally mounted buffer tilting on a support frame by at least one hinge hinge.
• the frame is durably sealed in the ground and one or more pads articulated with respect to the frame can occupy a closed position in which the buffers seal the opening formed in this frame or an open position in which the pads are erected approximately vertically to clear the opening of the frame.
• each ground manhole plug is very heavy because it is made of a material based on cast iron, in particular spheroidal material.
• Such buffers are difficult to maneuver when tilting between the closed and open positions of the frame and, moreover, when they occupy their open position, they can accidentally switch to their closed position of the frame .
• the document FR-A-2 674 879 describes a safety device for at least one articulated ground-manhole buffer which comprises, for each eye buffer, a lever whose lower end is articulated on the frame of the manhole and the upper end is provided with an oblong longitudinal slot in which slides an extension of the axis of articulation of a rod of an assistance cylinder to the opening of the buffer.
• This lever is provided at its upper free end with a hook hinged to this lever and which hooks under a finger of the axis of articulation of the rod of the assistance cylinder at the end of the opening movement of the buffer .
• a locking hook lever makes it possible to wedge the buffer to its upright open position without the risk of accidental tilting of the buffer towards its closed position.
• this known safety device has the disadvantage of requiring the various elements constituting it to be precisely mounted to the frame and the buffer of the gaze so that during the pivoting of the buffer to its open position, the free end of the lever provided with the hook can secanter the rotational trajectory of the finger of the axis of articulation of the rod of the assistance cylinder, otherwise the hook will not be able to burrow under this finger.
• the present invention aims to overcome the above disadvantages of known safety devices.
• the invention proposes a road equipment comprising at least one hinged pivoting buffer at the side of a support frame by at least one articulation hinge between a position of closure of the support frame and a position of opening of this frame and, for each buffer, a safety device comprising a self-locking arm whose one end is pivotally mounted to the side of the frame about a pivot axis and the other end is connected to the buffer by a axis integral with the buffer and slidably mounted in an oblong longitudinal slot of the self-locking arm so as to allow the rotation of the arm about its pivot axis during the tilting of the buffer between its open and closed positions and automatically block the buffer its open position, is characterized in that the connecting axis of the self-locking arm pad comprises two adjacent cylindrical portions respectively smaller in diameter and larger diameter and is axially movable relative to the buffer under the action of a resilient member which urges the smaller diameter portion of the connecting pin into sliding engagement with the oblong slot of the self-locking arm when the pad
• the larger diameter portion of the connecting pin can be released from the circular hole of the self-locking arm by manually pulling on the link pin against the restoring force exerted by the elastic member on the connecting axis to dispose the smaller diameter portion opposite the oblong slot of the self-locking arm and allow the tilting of the buffer to its closed position.
• the cylindrical portions of smaller diameter and larger diameter of the connecting pin are connected to one another by a shoulder held in abutment on a corresponding face of the self-locking arm by the elastic member when the cylindrical portion of smaller diameter is engaged in the oblong slot of the self-locking arm and the connecting pin has a flange adjacent to the cylindrical portion of larger diameter opposite the cylindrical portion of smaller diameter and which is held in abutment by the elastic member on the corresponding end face of the self-locking arm having the circular orifice when the buffer is in its locked open position.
• the connecting pin is axially slidably supported by a yoke of the stamp and an end portion projecting from one side of the yoke comprises the two adjacent cylindrical portions of different diameters.
• the connecting pin is mounted axially sliding in a sheath integral with the buffer clevis and an end portion of which is on the same side as the two adjacent cylindrical parts is adapted to receive the cylindrical portion of smaller diameter of the axis. connection when its larger diameter portion is engaged in the circular hole of the self-locking arm with the connecting shoulder between these two cylindrical portions abutting on the free end of the end portion of the sleeve under the action of the elastic member.
• the self-locking arm moves in rotation about its pivot axis between the connecting shoulder and the free end of the end portion projecting from the sleeve.
• the sleeve is fixed to the yoke by a nut engaged on a threaded portion externally of the projecting end portion of the sleeve and a head secured to the opposite end of the sleeve and bearing on the corresponding branch of the yoke.
• the elastic member is a helical compression spring mounted coaxially around an end portion of the connecting pin projecting from the yoke opposite the end portion of this axis comprising the two cylindrical parts of different diameters and which is prestressed between the sleeve and a nut fixed to the free end of the corresponding end portion of the connecting pin.
• the sleeve is fixed to the yoke by two nuts integral with an externally threaded portion of the sleeve and enclosing the branch of the yoke opposite to the other branch adjacent to the self-locking arm.
• the elastic member is a helical compression spring mounted coaxially around an end portion of the connecting pin projecting from the yoke opposite the end portion of this axis. comprising the two cylindrical parts of different diameters and which is prestressed between one of the nuts securing the sleeve to the branch of the yoke and a nut fixed to the free end of the corresponding end portion of the connecting pin .
• the equipment advantageously comprises a gripping handle secured to the end of the connecting pin and for exerting traction on this axis to release the larger diameter portion of the circular hole of the self-locking arm.
• the connecting axis is parallel to the pivot axis of the self-locking arm at the side of the frame and the pivot axis of this arm is disposed below the articulation hinge of the buffer frame.
• the equipment further comprises at least one assistance cylinder opening the buffer and pivotally mounted firstly to the frame side on the same pivot axis of the self-locking arm and secondly to the buffer on a coaxial axis to the link axis.
• the assistance cylinder is pivotally mounted around the sheath between the two branches of the yoke.
• the equipment comprises means integral with the buffer and adapted to maintain laterally the self-locking arm when the larger diameter portion of the connecting pin is released from the circular orifice of the arm.
• the equipment comprises a rigid support tag integral with the sleeve perpendicular to the latter.
• the equipment of the invention is advantageously part of a roadway.
• FIG. 2 is a perspective view similar to that of Figure 1 and showing the safety device of a buffer moving to its closed position of the frame of the manhole;
• Figure 3 is a side view along the arrow III of Figure 2;
• Figure 4 is a bottom view of the two buffers of the manhole occupying their closed position of the frame;
• FIG. 5 is a sectional view along the line V-V of Figure 4 and wherein the safety device occupies the position allowing a tilting of the corresponding buffer between its open and closed positions;
• FIG. 6 is a sectional view similar to that of Figure 5 and showing the safety device in its locking position of the buffer at its open position;
• FIG. 7 is an enlarged view of the circled portion VII of FIG. 1;
• Figure 8 is an enlarged view of the circled portion VIII of Figure 4;
• Figure 9 is an enlarged view similar to that of Figure 7 and showing an alternative embodiment of the invention;
• - Figure 10 is a sectional view similar to that of Figure 6 and showing another alternative embodiment of the safety device of the invention;
• FIG. 11 is a perspective view similar to that of FIG. 7 and showing the variant embodiment of FIG. 9.
• the safety device that will be described below applies to at least one buffer for manhole, but it is understood that it can be applied to any buffer or leaf other than that of a roadway .
• the manhole comprises a frame 1 and two buffers 2 each having the general shape of a right-angled triangle, mounted hinged on two opposite sides 3 of the frame 1 by means of articulation hinges 4, two hinge hinges on one side of the frame 1 being provided for each pad 2.
• each hinge hinge 4 comprises a horizontal axis 5 carried by a yoke 6 secured to a side 3 of the frame 1 in the upper part of this side.
• each pad 2 can swing around its two hinge hinges 4 relative to the frame 1 between a closed position of the opening of the frame 1 and an open position of this frame.
• the two triangulated pads 2 are adjacent by their hypotenuses.
• Each buffer 2 is associated with at least one cylinder 7 to assist in the opening of the buffer and, in the embodiment shown, two parallel cylinders 7 for assistance in opening the buffer are provided.
• each assistance cylinder 7 may be of the gas type.
• the rod 8 of each cylinder 7 is pivotally mounted on an axis 9 fixed to a yoke 10 secured to the corresponding inner face 3a of the side 3 of the frame 1, the axis 9 being located below the two hinge hinges 4 of the buffer 2 to the frame 1.
• the axis 9 of pivoting of each rod 8 of the cylinder 7 is parallel to the axes 5 of the articulation hinges 4.
• the two ends 8a of the two rods cylinder 7 are pivotally mounted coaxially around the axis 9 between the two branches 10a of the yoke 10 with interposition between the two ends 8a of a central spacer 11.
• the pivot axis 9 protrudes on both sides of the two branches 10a of the yoke 10 and these two projecting end portions are externally threaded to allow the screwing of two opposite nuts 12 for fixing the axis 9 to the yoke 10.
• each cylinder 7 is connected to the corresponding buffer 2 and pivotally mounted at its end 13a about an axis XX 'attached to a support yoke 14 integral with the inner face of the corresponding buffer 2.
• the two ends 13a of the bodies 13 of cylinder 7 are pivotally mounted between the two branches 14a of the yoke 14 and are axially separated from each other by a central spacer 15.
• the pivot axis XX 'of the bodies 13 of cylinders 7 is parallel to the pivot axis 9 of the rods 8 of these cylinders 7 which thus extend in the same plane passing through these two axes.
• each cylinder 7 can be mounted in the opposite direction between the frame 1 and the associated buffer 2 thus having its body 13 pivotally mounted to the axis 9 and its rod 8 pivotally mounted to the axis X-X '.
• Each buffer 2 is further associated with an arm 16 for automatically blocking the buffer 2 at the end of the opening movement.
• the self-locking arm 16 has one of its ends which is pivotally mounted to the corresponding side 3 of the frame 1 about the pivot axis 9 of the two ends 8a of the rods 8 of the cylinders 7.
• the end of the self-locking arm 16 is pivotally attached to the axis 9 by a screw head 17 fixed in a hole threaded blind of the axis 9 so that the end of the arm 16 is disposed between the screw head 17a and the corresponding locking nut 12 of the axis 9 to the yoke 10.
• the opposite end of the self-locking arm 16 is connected to the corresponding pad 2 by an axis 18 integral with the pad 2 as will be seen later and which is slidably mounted in an oblong longitudinal slot 19 of the self-locking arm 16 so as to allow the drive rotating the arm about its pivot axis 9 to the side of the frame 1 when tilting the buffer 2 between its open and closed positions and automatically block the buffer 2 to its approximately vertical opening position.
• the connecting pin 18 of the self-locking arm 16 to the buffer 2 is mounted axially movable along the axis XX 'between the two branches 14a of the yoke 14 in a fixed sheath 20 arranged concentrically around the axis axially mobile 18.
• the sleeve 20 passes through the holes of the two branches 14a of the yoke 14 projecting from both sides thereof.
• the sleeve 20 is fixed to the branches 14a of the yoke 14 on the one hand by a nut 21 screwed onto an externally threaded end portion 20a of the sleeve 20 projecting from one 14a of the branches of the yoke 14 on the side of the yoke. corresponding end of the self-locking arm 16 and secondly by a head portion 20b of the sleeve 20 projecting from the other branch 14a of the yoke 14 opposite thereof.
• the sleeve 20 may be fixed to the yoke 14 by the nut 21 and the head portion 20b of the sleeve in a slight axial play as shown in FIGS. 5 and 6, but it may be fixed without play so that the nut 21 and the head portion 20b come into bearing on the outer faces respectively of the two branches 14a of the yoke 14.
• the two ends 13a of the bodies 13 of jacks 7 and 1 'spacer 15 are arranged concentrically around the sheath 20.
• the connecting pin 18 has a portion projecting from the end portion 20a of the sleeve 20 having two adjacent cylindrical portions 22, 23 of smaller diameter and larger diameter respectively and a flange portion 24 adjacent to the portion of larger diameter 23 opposite the smaller diameter portion 22.
• the axis 18 extends beyond the flange portion 24 by a threaded end 25 which is secured by screwing a gripping handle 26 for example in the form of bakelite sphere.
• the connecting pin 18 also protrudes from the sheath 20 opposite the cylindrical portions of smaller diameter and larger diameter 22, 23 and a helical compression spring 27 is mounted coaxially around this projecting portion of the pin 18 being prestressed between the head portion 20b of the sleeve 20 and a washer 28 mounted coaxially on this projecting portion being retained axially by a nut 30, for example of the Nylstop type, screwed onto an externally threaded end portion end of the connecting pin 18.
• the spring 27 tends to recall or axially bias the connecting pin 18 to the left with respect to Figures 5 and 6, that is to say in a direction tending to recall the different diameter parts 22, 23 towards the locking nut 21.
• the smaller diameter portion 22 of the connecting pin 18 has a diameter slightly less than the width of the oblong slot 19 of the self-locking arm 16 and the larger diameter portion 23 has a diameter slightly smaller than the diameter of an orifice circular 19a made at the end of the self-locking arm 16 in extension of the light 19.
• the smaller diameter portion 22 is connected to the larger diameter portion 23 by a beveled shoulder 29.
• the rigid self-locking arm 16 can be constituted by a flat bar having an elongated portion 16 from its end having the circular orifice 19a and extended by a bent portion 16b pivotally connected to the pivot axis 9. In any case, the arm self-locking 16 extends parallel to each of the two assistance cylinders 7.
• each pad 2 When each pad 2 is brought into the open position by pivoting in the direction of the arrow F1 in FIG. 3, it carries with it the two cylinders 7 which it causes to extend to assist the opening of the pad 2 and during this pivoting, the self-locking arm 16 is rotated about the pivot axis 9 with the smaller diameter portion 22 engaged in the oblong slot 19 under the bias of the spring 27 so that this portion of smaller diameter of the connecting pin 18 can slide in the slot 19.
• the self-locking arm 16 moves during the pivoting of the buffer 2 between the free end of the projecting end portion 20a of the sleeve 20 and the stop 29 connecting between the parts of smaller and larger diameter 22, 23 as shown in Figure 5.
• This figure also shows that the spring 27 constantly urges the stop 29 bearing on the outer face of the self-locking arm 16 whose face internal is supported on the free end of the sheath 20.
• FIG. 9 represents an alternative embodiment of the invention according to which means are provided for maintaining the self-locking arm 16 at its position in a vertical plane when the gripping handle 26 is manipulated to exert traction on the connecting pin 18 in the open position of the buffer 2 to bring it to its closed position.
• These holding means comprise a rigid flat tab 40 having at its upper end, considering FIG. 9, a bore, not shown, traversed by the connecting pin 18 so that the latter can slide through the tab 40. upper end portion of the tab 40 is locked by clamping between the nut 21 and the corresponding branch 14a of the yoke 14.
• a cylindrical axis 41 perpendicular to the tab 40 and passing through the lumen 19 of the self-locking arm 16.
• the axis 41 comprises a portion of larger diameter 42 secured to the tab 40 and a diameter greater than the width of the light 19 but less than the width of the self-locking arm 16 so that the axis portion 42 is opposite the corresponding face of the self-locking arm 16.
• the cylindrical axis 42 comprises a part of smaller threaded diameter 43 passing through the lumen 19 of the self-locking arm 16 and at the free end of which is screwed a nut 44, for example of the Nylstop type, with interposition between the nut 44 and the self-locking arm 16 of a washer 45.
• the nut 43 is axially locked on the threaded shaft 43 in a position such that a small axial clearance remains between the self-locking arm 16, the axis 42 of larger diameter and the washer 45 to allow the threaded shaft 43 of slide in the lumen 19 during the displacement of the buffer 2 between its positions of closing and opening of the frame 1.
• the self-locking arm 16 can not be moved laterally in the open position of the buffer 2 when the larger diameter portion 23 is disengaged from the opening 19a of the self-locking arm 16 in the open position of the buffer 2 to allow the tilting of this buffer to its closed position.
• FIGS. 10 and 11 show an alternative embodiment of fixing the sheath 20 to the branches 14a of the yoke 14 of the buffer 2.
• the elements of FIGS. 10 and 11 which are identical and / or performing the same function as those represented in particular in FIGS. and 9 have the same references and will not be described again in detail.
• Figures 10 and 11 show the situation in which the buffer 2 is locked at its approximately vertical opening position at which the larger diameter portion 23 of the linkage axis 18 is engaged, under the stress of the spring 27 in the circular orifice 19a of the lumen 19 of the self-locking arm 16 with the portion of smaller diameter 22 of this axis housed in the corresponding end portion of the sheath 20.
• the sleeve 20 is fixed to the branch 14a of the yoke 14 located on the spring side 27 by two nuts 46, 47 screwed onto an externally threaded portion of the sleeve 20 and disposed on either side of the branch 14a. by gripping it so that the sheath 20 is rigidly fixed to this branch perpendicular thereto and therethrough.
• the fixing nut 46 situated between the two branches 14a of the yoke 14 is narrower than the other fixing nut 47 resting on the external face of the spring-side branch 14a which bears on the nut 47 via a washer 48.
• the two ends 13a of the bodies 13 of the cylinders 7 are pivotally mounted between the two branches 14a of the clevis 14 on the sleeve 20 being spaced from one another.
• One of the ends 13a of the body 13 of the corresponding jack bears on the nut 46 while the other end 13a of the body 13 of the other jack is resting on a spacer 49 itself resting on the leg rigid plane of maintenance 40 described in connection with Figure 9.
• the tab 40 is disposed between the spacer 49 and the flat face of the branch 14a of the yoke 14 opposite the self-locking arm 16.
• the end of the sleeve 20 located on the side of the cylindrical portions of the smallest and the largest diameters 22, 23 of the connecting pin 18, contrary to Figures 5, 6 and 9, does not project from the branch 14a of the clevis 14 and is in flush with the face of this branch opposite the corresponding end of the self-locking arm 16.
• an assistance label 50 is fixed perpendicularly to the sleeve 20 between the two ends 13a of the bodies 13 of the two cylinders 7.
• This label 50 which may be in the form of rectangular metal rigid plate, has inscriptions, visible in Figure 11, providing an operator on the mode of use of the device of the invention.
• the buffers 2 are made of cast iron, in particular spheroidal, but they can be made of any other material.
• each stamp may have a shape other than a right triangle, for example rectangular or circular.
• the safety device of the invention not only improves the safety of the personnel by opposing any accidental folding of each pad 2 on the frame 1, but is easy to handle especially during the unlocking operation of the self-locking arm 16 to the vertical position of the pad without risk of injury to the fingers of a hand of the user.
• the device of the invention is of a simple and inexpensive structure.

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• 2009
  • 2009-03-18 FR FR0951728A patent/FR2943359B1/fr active Active
• 2010
  • 2010-03-05 EP EP10715296.9A patent/EP2408973B1/de not_active Not-in-force
  • 2010-03-05 ES ES10715296.9T patent/ES2552092T3/es active Active
  • 2010-03-05 WO PCT/FR2010/050371 patent/WO2010106266A1/fr active Application Filing
  • 2010-03-05 PL PL10715296T patent/PL2408973T3/pl unknown
  • 2010-03-05 PT PT107152969T patent/PT2408973E/pt unknown

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