EP2408973A1 - Road system apparatus with a safety device for at least one buffer of the apparatus - Google Patents

Road system apparatus with a safety device for at least one buffer of the apparatus

Info

Publication number
EP2408973A1
EP2408973A1 EP10715296A EP10715296A EP2408973A1 EP 2408973 A1 EP2408973 A1 EP 2408973A1 EP 10715296 A EP10715296 A EP 10715296A EP 10715296 A EP10715296 A EP 10715296A EP 2408973 A1 EP2408973 A1 EP 2408973A1
Authority
EP
European Patent Office
Prior art keywords
buffer
self
locking arm
connecting pin
equipment according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP10715296A
Other languages
German (de)
French (fr)
Other versions
EP2408973B1 (en
Inventor
Pascal Lacroix
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
EJ Emea SAS
Original Assignee
Norinco SA
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 Norinco SA filed Critical Norinco SA
Priority to PL10715296T priority Critical patent/PL2408973T3/en
Publication of EP2408973A1 publication Critical patent/EP2408973A1/en
Application granted granted Critical
Publication of EP2408973B1 publication Critical patent/EP2408973B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • 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
    • E05Y2900/00—Application of doors, windows, wings or fittings thereof
    • E05Y2900/60—Application of doors, windows, wings or fittings thereof for other use
    • E05Y2900/612—Application of doors, windows, wings or fittings thereof for other use for manhole covers

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.

Abstract

The present invention relates to a road apparatus provided with a safety device for at least one buffer of the apparatus. The apparatus is characterised in that the axle (18) for connecting the self-locking arm (16) to the buffer (2) includes two adjacent cylindrical parts (22, 23) having a smaller diameter and a larger diameter, respectively, and is axially moved relative to the buffer (2) by a resilient member (27) urging the smaller diameter part (22) of the axle (18) into sliding insertion in the aperture (19) of the arm (16) when the buffer (2) tilts between the open and closed positions thereof, and urging the larger diameter part (23) into locked insertion in an opening (19a) of the arm (16) when the buffer (2) is in the open position thereof. The invention can be used in the field of road systems.

Description

Equipement de voirie équipé d'un dispositif de sécurité pour au moins un tampon de l'équipement.Road equipment equipped with a safety device for at least one buffer of the equipment.
La présente invention concerne un équipement de voirie comprenant au moins un tampon monté articulé à basculement sur un cadre de support par au moins une charnière d'articulation.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.
Elle s'applique en particulier mais de manière non limitative aux regards de chaussée. Dans une telle application, le cadre est scellé durablement dans le sol et un ou plusieurs tampons articulés par rapport au cadre peuvent occuper une position fermée dans laquelle les tampons obturent l'ouverture ménagée dans ce cadre ou une position ouverte dans laquelle les tampons sont dressés approximativement verticalement pour dégager l'ouverture du cadre.It applies in particular but in a non-limiting way to manholes. In such an application, 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.
Généralement, chaque tampon de regard de chaussée est très lourd de par sa réalisation en matériau à base de fonte, notamment sphéroïdale. Ainsi, de tels tampons sont difficiles à manœuvrer lors de leur basculement entre les positions de fermeture et d'ouverture du cadre et, en outre, lorsqu'ils occupent leur position d'ouverture, ils peuvent basculer accidentellement à leur position de fermeture du cadre. Le document FR-A-2 674 879 décrit un dispositif de sécurité pour au moins un tampon articulé de regard de chaussée qui comprend, pour chaque tampon du regard, un levier dont l'extrémité inférieure est articulée sur le cadre du regard et l'extrémité supérieure est pourvue d'une lumière oblongue longitudinale dans laquelle coulisse un prolongement de l'axe d'articulation d'une tige d'un vérin d'assistance à l'ouverture du tampon. Ce levier est muni à son extrémité libre supérieure d'un crochet articulé sur ce levier et qui vient s'accrocher sous un doigt de l'axe d'articulation de la tige du vérin d'assistance en fin de mouvement d'ouverture du tampon. Un tel levier à crochet de verrouillage permet de caler le tampon à sa position debout d'ouverture sans risque de basculement accidentel du tampon vers sa position de fermeture. Cependant, ce dispositif de sécurité connu a pour inconvénient d'exiger aux différents éléments le constituant d'être précisément montés au cadre et au tampon du regard afin que, durant le pivotement du tampon à sa position d'ouverture, l'extrémité libre du levier muni du crochet puisse sécanter la trajectoire rotative du doigt de l'axe d'articulation de la tige du vérin d'assistance, sinon le crochet ne pourra pas s'enfourcher sous ce doigt. En outre, pour procéder à la fermeture de l'ouverture du cadre par le tampon, il faut faire pivoter manuellement le crochet à sa position déverouillée autour de son axe d'articulation à l'extrémité libre du levier, ce qui nécessite avant tout de la part de l'opérateur un effort relativement important pour faire basculer légèrement en arrière le tampon. La présente invention a pour but de palier les inconvénients ci-dessus des dispositifs de sécurité connus .Generally, each ground manhole plug is very heavy because it is made of a material based on cast iron, in particular spheroidal material. Thus, 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 . Such 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. However, 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. In addition, to close the opening of the frame by the buffer, it is necessary to manually rotate the hook to its unlocked position about its hinge axis at the free end of the lever, which requires above all to the part of the operator a relatively large effort to tilt slightly back the buffer. The present invention aims to overcome the above disadvantages of known safety devices.
A cet effet, l'invention propose un équipement de voirie comprenant au moins un tampon monté articulé à basculement au côté d'un cadre de support par au moins une charnière d'articulation entre une position de fermeture du cadre de support et une position d'ouverture de ce cadre et, pour chaque tampon, un dispositif de sécurité comprenant un bras autobloquant dont l'une des extrémité est montée pivotante au côté du cadre autour d'un axe de pivotement et l'autre extrémité est reliée au tampon par un axe solidaire du tampon et monté coulissant dans une lumière oblongue longitudinale du bras autobloquant de manière à permettre l'entraînement en rotation de ce bras autour de son axe de pivotement lors du basculement du tampon entre ses positions d'ouverture et de fermeture et à automatiquement bloquer le tampon à sa position d'ouverture, est caractérisé en ce que l'axe de liaison du bras autobloquant au tampon comprend deux parties cylindriques adjacentes respectivement de plus petit diamètre et de plus grand diamètre et est axialement mobile relativement au tampon sous l'action d'un organe élastique qui sollicite la partie de plus petit diamètre de l'axe de liaison en engagement coulissant dans la lumière oblongue du bras autobloquant lors du basculement du tampon entre ses deux positions d'ouverture et de fermeture et la partie de plus grand diamètre de l'axe de liaison en engagement bloqué dans un orifice circulaire de l'extrémité du bras autobloquant en prolongement de la lumière oblongue de ce bras lorsque le tampon est amené à sa position d'ouverture. En position de blocage du tampon à sa position d'ouverture, la partie de plus grand diamètre de l'axe de liaison peut être libérée de l'orifice circulaire du bras autobloquant par traction manuellement exercée sur l'axe de liaison à l' encontre de la force de rappel exercée par l'organe élastique sur l'axe de liaison pour disposer la partie de plus petit diamètre en regard de la lumière oblongue du bras autobloquant et permettre le basculement du tampon vers sa position de fermeture.For this purpose, 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 is tilted between its two open and closed positions and the larger diameter portion of the connection axis in engagement locked in a circular hole of the end of the self-locking arm in extension of the oblong slot of the arm when the pad is brought to its open position. In the locked position of the buffer in its open position, 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.
Les parties cylindriques de plus petit diamètre et de plus grand diamètre de l'axe de liaison sont raccordées l'une à l'autre par un épaulement maintenu en appui sur une face correspondante du bras autobloquant par l'organe élastique lorsque la partie cylindrique de plus petit diamètre est engagée dans la lumière oblongue du bras autobloquant et l'axe de liaison comporte une collerette adjacente à la partie cylindrique de plus grand diamètre à l'opposé de la partie cylindrique de plus petit diamètre et qui est maintenue en appui par l'organe élastique sur la face correspondante d'extrémité du bras autobloquant comportant l'orifice circulaire lorsque le tampon occupe sa position bloquée d'ouverture. L'axe de liaison est supporté axialement coulissant par une chape du tampon et dont une partie d'extrémité faisant saillie d'un côté de la chape comporte les deux parties cylindriques adjacentes de diamètres différents. L'axe de liaison est monté axialement coulissant dans un fourreau solidaire de la chape du tampon et dont une partie d'extrémité située du même côté que les deux parties cylindriques adjacentes est apte à recevoir la partie cylindrique de plus petit diamètre de l'axe de liaison lorsque sa partie de plus grand diamètre est engagée dans l'orifice circulaire du bras autobloquant avec l'épaulement de raccordement entre ces deux parties cylindriques en butée sur l'extrémité libre de la partie d'extrémité du fourreau sous l'action de l'organe élastique.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.
Le bras autobloquant se déplace en rotation autour de son axe de pivotement entre l'épaulement de raccordement et l'extrémité libre de la partie d'extrémité en saillie du fourreau. Le fourreau est fixé à la chape par un écrou engagé sur une partie filetée extérieurement de la partie d'extrémité en saillie du fourreau et une tête solidaire de l'extrémité opposée du fourreau et en appui sur la branche correspondante de la chape. De préférence, l'organe élastique est un ressort hélicoïdal de compression monté coaxialement autour d'une partie d'extrémité de l'axe de liaison en saillie de la chape à l'opposé de la partie d'extrémité de cet axe comportant les deux parties cylindriques de diamètres différents et qui est précontraint entre le fourreau et un écrou fixé à l'extrémité libre de la partie d'extrémité correspondante de l'axe de liaison.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. Preferably, 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.
Selon une variante de réalisation, le fourreau est fixé à la chape par deux écrous solidaires d'une partie extérieurement filetée du fourreau et enserrant la branche de la chape opposée à l'autre branche adjacente au bras autobloquant. Selon cette variante de réalisation, l'organe élastique est un ressort hélicoïdal de compression monté coaxialement autour d'une partie d'extrémité de l'axe de liaison en saillie de la chape à l'opposé de la partie d'extrémité de cet axe comportant les deux parties cylindriques de diamètres différents et qui est précontraint entre l'un des écrous de fixation du fourreau à la branche de la chape et un écrou fixé à l'extrémité libre de la partie d'extrémité correspondante de l'axe de liaison.According to an alternative embodiment, 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. According to this variant embodiment, 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 .
L'équipement comprend avantageusement une poignée de préhension solidaire de l'extrémité de l'axe de liaison et permettant d'exercer une traction sur cet axe pour libérer la partie de plus grand diamètre de l'orifice circulaire du bras autobloquant .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.
L'axe de liaison est parallèle à l'axe de pivotement du bras autobloquant au côté du cadre et l'axe de pivotement de ce bras est disposé en dessous de la charnière d'articulation du tampon au cadre. L'équipement comprend en outre au moins un vérin d'assistance à l'ouverture du tampon et monté pivotant d'une part au côté du cadre sur le même axe de pivotement du bras autobloquant et d'autre part au tampon sur un axe coaxial à l'axe de liaison. Le vérin d'assistance est monté pivotant autour du fourreau entre les deux branches de la chape.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.
En variante, l'équipement comprend des moyens solidaires du tampon et aptes à maintenir latéralement le bras autobloquant lorsque la partie de plus grand diamètre de l'axe de liaison est libérée de l'orifice circulaire du bras.Alternatively, 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.
Avantageusement, l'équipement comprend une étiquette rigide d'assistance solidaire du fourreau perpendiculairement à ce dernier. L'équipement de l'invention fait partie avantageusement d'un regard de chaussée. L'invention sera mieux comprise, et d'autres buts, caractéristiques, détails et avantages de celle-ci apparaîtront plus clairement dans la description explicative qui va suivre faite en référence aux dessins techniques annexés donnés uniquement à titre d'exemple illustrant un mode de réalisation de l'invention et dans lesquels : la figure 1 est une vue en perspective d'un dispositif de sécurité de l'invention pour deux tampons de regard de chaussée occupant leur position d'ouverture ;Advantageously, 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. The invention will be better understood, and other objects, features, details and advantages thereof will appear more clearly in the explanatory description which follows with reference to the accompanying drawings given solely by way of example illustrating a method of embodiment of the invention and in which: Figure 1 is a perspective view of a safety device of the invention for two pavement look buffers occupying their open position;
- la figure 2 est une vue en perspective semblable à celle de la figure 1 et représentant le dispositif de sécurité d'un tampon se déplaçant à sa position de fermeture du cadre du regard de chaussée ;- Figure 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;
- la figure 3 est une vue de côté suivant la flèche III de la figure 2 ; la figure 4 est une vue de dessous des deux tampons du regard de chaussée occupant leur position de fermeture du cadre ;- 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;
- la figure 5 est une vue en coupe suivant la ligne V-V de la figure 4 et selon laquelle le dispositif de sécurité occupe la position permettant un basculement du tampon correspondant entre ses positions d'ouverture et de fermeture ;- Figure 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;
- la figure 6 est une vue en coupe semblable à celle de la figure 5 et représentant le dispositif de sécurité à sa position de blocage du tampon à sa position d'ouverture ; - la figure 7 est une vue agrandie de la partie cerclée en VII de la figure 1 ;- Figure 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;
- la figure 8 est une vue agrandie de la partie cerclée en VIII de la figure 4 ; la figure 9 est une vue agrandie semblable à celle de la figure 7 et représentant une variante de réalisation de l'invention ; - la figure 10 est une vue en coupe semblable à celle de la figure 6 et représentant une autre variante de réalisation du dispositif de sécurité de l'invention ; et - la figure 11 est une vue en perspective semblable à celle de la figure 7 et représentant la variante de réalisation de la figure 9.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; and FIG. 11 is a perspective view similar to that of FIG. 7 and showing the variant embodiment of FIG. 9.
Le dispositif de sécurité qui va être décrit ci- dessous s'applique à au moins un tampon pour regard de chaussée, mais il est bien entendu qu'il peut s'appliquer à tout tampon ou vantail autre que celui d'un regard de chaussée .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 .
En se reportant aux figures, le regard de chaussée comprend un cadre 1 et deux tampons 2 ayant chacun la forme générale d'un triangle rectangle, montés articulés sur deux côtés opposés 3 du cadre 1 par 1 ' intermédiaire de charnières d'articulation 4, deux charnières d'articulation à un côté du cadre 1 étant prévues pour chaque tampon 2. Comme cela est connu en soi, chaque charnière d'articulation 4 comprend un axe horizontal 5 porté par une chape 6 solidaire d'un côté 3 du cadre 1 en partie supérieure de ce côté.Referring to the figures, 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. As is known per se, 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.
Ainsi, chaque tampon 2 peut basculer autour de ses deux charnières d'articulation 4 relativement au cadre 1 entre une position de fermeture de l'ouverture du cadre 1 et une position d'ouverture de ce cadre.Thus, 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.
En position de fermeture du cadre 1, les deux tampons triangulés 2 sont adjacents par leurs hypoténuses.In the closed position of the frame 1, the two triangulated pads 2 are adjacent by their hypotenuses.
Chaque tampon 2 est associé à au moins un vérin 7 d'assistance à l'ouverture du tampon et, dans le mode de réalisation représenté, deux vérins parallèles 7 d'assistance à l'ouverture du tampon sont prévus. Avantageusement, chaque vérin d'assistance 7 peut être du type à gaz . La tige 8 de chaque vérin 7 est montée pivotante sur un axe 9 fixé à une chape 10 solidaire de la face interne correspondante 3a du côté 3 du cadre 1, l'axe 9 étant situé en dessous des deux charnières d'articulation 4 du tampon 2 au cadre 1. Bien entendu, l'axe 9 de pivotement de chaque tige 8 du vérin 7 est parallèle aux axes 5 des charnières d'articulation 4. Comme cela ressort mieux de la figure 8, les deux extrémités 8a des deux tiges de vérin 7 sont montées pivotantes coaxialement autour de l'axe 9 entre les deux branches 10a de la chape 10 avec interposition entre les deux extrémités 8a d'une entretoise centrale 11. L'axe de pivotement 9 fait saillie de part et d'autre des deux branches 10a de la chape 10 et ces deux parties d'extrémité en saillie sont extérieurement filetées pour permettre le vissage de deux écrous opposés 12 de fixation de l'axe 9 à la chape 10.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. Advantageously, 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. Of course, the axis 9 of pivoting of each rod 8 of the cylinder 7 is parallel to the axes 5 of the articulation hinges 4. As is clear from Figure 8, 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.
Le corps 13 de chaque vérin 7 est relié au tampon correspondant 2 et monté pivotant par son extrémité 13a autour d'un axe X-X' fixé à une chape de support 14 solidaire de la face interne du tampon correspondant 2. Les deux extrémités 13a des corps 13 de vérin 7 sont montées pivotantes entre les deux branches 14a de la chape 14 et sont axialement séparées l'une de l'autre par une entretoise centrale 15. L'axe de pivotement X-X' des corps 13 de vérins 7 est parallèle à l'axe de pivotement 9 des tiges 8 de ces vérins 7 qui s'étendent ainsi dans un même plan passant par ces deux axes.The body 13 of 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.
Bien entendu, chaque vérin 7 peut être monté en sens inverse entre le cadre 1 et le tampon associé 2 en ayant ainsi son corps 13 monté pivotant à l'axe 9 et sa tige 8 montée pivotante à l'axe X-X'.Of course, 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 '.
Chaque tampon 2 est en outre associé à un bras 16 permettant de bloquer automatiquement le tampon 2 en fin de mouvement d'ouverture.Each buffer 2 is further associated with an arm 16 for automatically blocking the buffer 2 at the end of the opening movement.
Le bras autobloquant 16 a l'une de ses extrémités qui est montée pivotante au côté correspondant 3 du cadre 1 autour de l'axe de pivotement 9 des deux extrémités 8a des tiges 8 de vérins 7. A cet effet, l'extrémité du bras autobloquant 16 est fixée à pivotement à l'axe 9 par une vis à tête 17 fixée dans un trou borgne taraudé de l'axe 9 de façon que l'extrémité du bras 16 soit disposée entre la tête de vis 17a et l'écrou de blocage correspondant 12 de l'axe 9 à la chape 10.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. For this purpose, 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.
L'extrémité opposée du bras autobloquant 16 est reliée au tampon correspondant 2 par un axe 18 solidaire du tampon 2 comme on le verra ultérieurement et qui est monté coulissant dans une lumière oblongue longitudinale 19 du bras autobloquant 16 de manière à permettre l'entraînement en rotation de ce bras autour de son axe de pivotement 9 au côté du cadre 1 lors du basculement du tampon 2 entre ses positions d'ouverture et de fermeture et à automatiquement bloquer le tampon 2 à sa position d'ouverture approximativement verticale.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.
Selon l'invention, l'axe de liaison 18 du bras autobloquant 16 au tampon 2 est monté axialement mobile suivant l'axe X-X' entre les deux branches 14a de la chape 14 dans un fourreau fixe 20 disposé concentriquement autour de l'axe axialement mobile 18.According to the invention, 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.
Le fourreau 20 traverse les perçages des deux branches 14a de la chape 14 en faisant saillie de part et d'autre de celles-ci. Le fourreau 20 est fixé aux branches 14a de la chape 14 d'une part par un écrou 21 vissé sur une partie d'extrémité 20a extérieurement filetée du fourreau 20 faisant saillie de l'une 14a des branches de la chape 14 du côté de l'extrémité correspondante du bras autobloquant 16 et d'autre part par une partie formant tête 20b du fourreau 20 faisant saillie de l'autre branche 14a de la chape 14 en regard de celle-ci. Le fourreau 20 peut être fixé à la chape 14 par l'écrou 21 et la partie formant tête 20b du fourreau suivant un léger jeu axial comme représenté en figures 5 et 6, mais il peut être fixé sans jeu de façon que l'écrou 21 et la partie formant tête 20b viennent en appui sur les faces externes respectivement des deux branches 14a de la chape 14.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.
Les deux extrémités 13a des corps 13 de vérins 7 et 1' entretoise 15 sont disposées concentriquement autour du fourreau 20.The two ends 13a of the bodies 13 of jacks 7 and 1 'spacer 15 are arranged concentrically around the sheath 20.
L'axe de liaison 18 a une partie faisant saillie de la partie d'extrémité 20a du fourreau 20 comportant deux parties cylindriques adjacentes 22, 23 respectivement de plus petit diamètre et de plus grand diamètre et une partie formant collerette 24 adjacente à la partie de plus grand diamètre 23 à l'opposé de la partie de plus petit diamètre 22.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.
L'axe 18 se prolonge au-delà de la partie formant collerette 24 par un embout fileté 25 auquel est solidarisée par vissage une poignée de préhension 26 par exemple en forme de sphère en bakélite.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.
L'axe de liaison 18 fait également saillie du fourreau 20 à l'opposé des parties cylindriques de plus petit diamètre et de plus grand diamètre 22, 23 et un ressort hélicoïdal de compression 27 est monté coaxialement autour de cette partie en saillie de l'axe 18 en étant précontraint entre la partie formant tête 20b du fourreau 20 et une rondelle 28 montée coaxialement sur cette partie en saillie en étant retenue axialement par un écrou 30, par exemple du genre Nylstop, vissé sur une partie d'extrémité filetée extérieurement en bout de l'axe de liaison 18. Ainsi, le ressort 27 tend à rappeler ou solliciter axialement l'axe de liaison 18 vers la gauche par rapport aux figures 5 et 6, c'est-à-dire dans un sens tendant à rappeler les parties de diamètre différents 22, 23 vers 1 'écrou de blocage 21.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. Thus, 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.
La partie de plus petit diamètre 22 de l'axe de liaison 18 a un diamètre légèrement inférieur à la largeur de la lumière oblongue 19 du bras autobloquant 16 et la partie de plus grand diamètre 23 a un diamètre légèrement inférieur au diamètre d'un orifice circulaire 19a réalisé à l'extrémité du bras autobloquant 16 en prolongement de la lumière 19.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.
La partie de plus petit diamètre 22 est raccordée à la partie de plus grand diamètre 23 par un épaulement biseauté 29.The smaller diameter portion 22 is connected to the larger diameter portion 23 by a beveled shoulder 29.
Le bras autobloquant rigide 16 peut être constitué par une barre plate comportant une partie longiligne 16 partant de son extrémité comportant l'orifice circulaire 19a et prolongée par une partie coudée 16b reliée pivotante à l'axe de pivotement 9. En tout cas, le bras autobloquant 16 s'étend parallèlement à chacun des deux vérins d'assistance 7.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.
Lorsque chaque tampon 2 occupe sa position de fermeture du cadre 1, le bras autobloquant 16 et les deux vérins 7 s'étendent approximativement dans un même plan en dessous de l'ouverture supérieure du cadre 1.When each pad 2 occupies its closed position of the frame 1, the self-locking arm 16 and the two cylinders 7 extend approximately in the same plane below the upper opening of the frame 1.
Lorsque chaque tampon 2 est amené en position d'ouverture par pivotement dans le sens de la flèche Fl en figure 3, il entraîne avec lui les deux vérins 7 dont il provoque l'extension pour assister l'ouverture du tampon 2 et, pendant ce pivotement, le bras autobloquant 16 est entraîné en rotation autour de l'axe de pivotement 9 avec la partie de plus petit diamètre 22 engagée dans la lumière oblongue 19 sous la sollicitation du ressort 27 de façon que cette partie de plus petit diamètre de l'axe de liaison 18 puisse coulisser dans la lumière 19. Ainsi, le bras autobloquant 16 se déplace lors du pivotement du tampon 2 entre l'extrémité libre de la partie d'extrémité en saillie 20a du fourreau 20 et la butée 29 de raccordement entre les parties de plus petit et de plus grand diamètre 22, 23 comme représenté en figure 5. Cette figure montre également que le ressort 27 sollicite constamment la butée 29 en appui sur la face externe du bras autobloquant 16 dont la face interne est en appui sur l'extrémité libre du fourreau 20.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. Thus, 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.
Lorsque le tampon 2 est en fin de mouvement d'ouverture à une position approximativement verticale, la partie de plus grand diamètre 23, sous la sollicitation du ressort 27, s'engage automatiquement dans l'orifice circulaire 19a de la lumière 19 du bras autobloquant 16 et est retenue dans cet orifice par le ressort 27 comme représenté en figure 6 qui montre que la partie en collerette 24 est en appui sur la face externe de l'extrémité du bras autobloquant 16 dont la face interne est en appui sur l'extrémité libre de la partie en saillie 20a du fourreau 20. Cette figure montre en outre que la partie de plus petit diamètre 22 est logée dans le fourreau 20, cette partie de plus petit diamètre pouvant correspondre sensiblement au diamètre nominal de l'axe de liaison 18. De la sorte, le levier 16 bloque le tampon 2 à sa position d'ouverture et empêche tout basculement accidentel de ce tampon vers sa position de fermeture du cadre 1.When the buffer 2 is at the end of the opening movement at an approximately vertical position, the larger diameter portion 23, under the bias of the spring 27, engages automatically in the circular hole 19a of the lumen 19 of the self-locking arm 16 and is retained in this hole by the spring 27 as shown in Figure 6 which shows that the flange portion 24 bears on the outer face of the end of the self-locking arm 16 whose inner face bears on the free end of the projecting portion 20a of the sleeve 20. This figure also shows that the part of smaller diameter 22 is housed in the sheath 20, this portion of smaller diameter may correspond substantially to the nominal diameter of the connecting pin 18. In this way, the lever 16 blocks the buffer 2 at its open position and prevents any accidental tilting of this buffer to its closed position of the frame 1.
Lorsqu'un utilisateur souhaite basculer le tampon 2 à sa position de fermeture à partir de sa position d'ouverture, il lui suffit de tirer, à l'aide de la poignée de préhension 26, sur l'axe de liaison 18 pour le déplacer axialement dans le fourreau 20 en comprimant le ressort de rappel 27 de façon à libérer la partie de plus grand diamètre 23 de l'orifice 19a du bras 16 pour disposer la partie de plus petit diamètre 22 dans l'orifice 19a en regard de la lumière 19 et, en appuyant légèrement le tampon 2 dans le sens de son basculement vers le cadre 1, la partie de plus petit diamètre 22 s'engage dans la lumière 19 du bras 16 permettant le basculement du tampon 2 à sa position de fermeture sous l'assistance des vérins 7 avec déplacement en rotation du bras 16 autour de l'axe de pivotement 9 et déplacement de la partie de plus petit diamètre 22 par coulissement dans la lumière 19. Le ressort 27 sollicite la butée 29 en appui sur la face externe du bras 16 pour maintenir constamment la partie de plus petit diamètre 22 dans la lumière 19 pendant le basculement du tampon 2. La figure 9 représente une variante de réalisation de l'invention selon laquelle des moyens sont prévus pour maintenir le bras autobloquant 16 à sa position dans un plan vertical lorsque la poignée de préhension 26 est manipulée pour exercer une traction sur l'axe de liaison 18 en position d'ouverture du tampon 2 pour l'amener à sa position de fermeture.When a user wishes to switch the buffer 2 to its closed position from its open position, it is sufficient to pull, using the handle 26, on the connecting pin 18 to move it axially in the sleeve 20 by compressing the return spring 27 so as to release the larger diameter portion 23 of the orifice 19a of the arm 16 to arrange the smaller diameter portion 22 in the orifice 19a facing the light 19 and, by slightly pressing the pad 2 in the direction of its swing towards the frame 1, the smaller diameter portion 22 engages in the slot 19 of the arm 16 allowing the pad 2 to tilt to its closed position under the assistance cylinders 7 with rotational movement of the arm 16 about the pivot axis 9 and displacement of the smaller diameter portion 22 by sliding in the slot 19. The spring 27 urges the stop 29 bearing on the outer face arm 16 for hand constantly hold the smaller diameter portion 22 in the lumen 19 during the tilting of the tampon 2. 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.
Ces moyens de maintien comprennent une patte plane rigide 40 comportant à son extrémité supérieure, en considérant la figure 9, un perçage, non représenté, traversé par l'axe de liaison 18 afin que ce dernier puisse coulisser au travers de la patte 40. La partie d'extrémité supérieure de la patte 40 est bloquée par enserrement entre l'écrou 21 et la branche correspondante 14a de la chape 14.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 la partie d'extrémité inférieure de la patte 40 est fixé un axe cylindrique 41 perpendiculaire à la patte 40 et traversant la lumière 19 du bras autobloquant 16. L'axe 41 comprend une partie de plus grand diamètre 42 solidaire de la patte 40 et d'un diamètre supérieur à la largeur de la lumière 19 mais inférieur à la largeur du bras autobloquant 16 de façon que la partie d'axe 42 soit en regard de la face correspondante du bras autobloquant 16. L'axe cylindrique 42 comprend une partie de plus petit diamètre filetée 43 traversant la lumière 19 du bras autobloquant 16 et à l'extrémité libre de laquelle est vissé un écrou 44, par exemple du type Nylstop, avec interposition entre l'écrou 44 et le bras autobloquant 16 d'une rondelle 45. L'écrou 43 est axialement bloqué sur l'axe fileté 43 à une position telle qu'il subsiste un faible jeu axial entre le bras autobloquant 16, l'axe de plus grand diamètre 42 et la rondelle 45 pour permettre à l'axe fileté 43 de coulisser dans la lumière 19 lors du déplacement du tampon 2 entre ses positions de fermeture et d'ouverture du cadre 1. Ainsi, en disposant de part et d'autre du bras autobloquant 16 d'une part l'ensemble à écrou 44 et rondelle 45 et d'autre part l'axe de plus grand diamètre 42, le bras autobloquant 16 ne peut être déplacé latéralement en position d'ouverture du tampon 2 lorsque la partie de plus grand diamètre 23 est dégagée de l'orifice 19a du bras autobloquant 16 en position d'ouverture du tampon 2 pour permettre le basculement de ce tampon à sa position de fermeture.At the lower end portion of the tab 40 is fixed 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. Thus, by arranging on both sides of the self-locking arm 16 on the one hand the assembly with nut 44 and washer 45 and on the other hand the axis of more large diameter 42, 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.
Les figures 10 et 11 représentent une variante de réalisation de fixation du fourreau 20 aux branches 14a de la chape 14 du tampon 2. Les éléments des figures 10 et 11 identiques et/ou accomplissant la même fonction que ceux représentés notamment aux figures 5, 6 et 9 portent les mêmes références et ne seront pas décrits à nouveau de façon détaillée . En outre, les figures 10 et 11 représentent la situation selon laquelle le tampon 2 est bloqué à sa position d'ouverture approximativement verticale à laquelle la partie de plus grand diamètre 23 de l'axe liaison 18 est engagée, sous la sollicitation du ressort 27, dans l'orifice circulaire 19a de la lumière 19 du bras autobloquant 16 avec la partie de plus petit diamètre 22 de cet axe logée dans la partie d'extrémité correspondante du fourreau 20.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. In addition, 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.
Selon ce mode de réalisation, le fourreau 20 est fixé à la branche 14a de la chape 14 située côté ressort 27 par deux écrous 46, 47 vissés sur une partie extérieurement filetée du fourreau 20 et disposés de part et d'autre de la branche 14a en enserrant celle-ci de manière que le fourreau 20 soit rigidement fixé à cette branche perpendiculairement à celle-ci et au travers de celle-ci. L'écrou de fixation 46 situé entre les deux branches 14a de la chape 14 est plus étroit que l'autre écrou de fixation 47 en appui sur la face externe de la branche 14a côté ressort 27 qui est en appui sur l'écrou 47 par l'intermédiaire d'une rondelle 48.According to this embodiment, 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.
Les deux extrémités 13a des corps 13 des vérins 7 sont montées pivotantes entre les deux branches 14a de la chape 14 sur le fourreau 20 en étant espacées l'une de l'autre. L'une des extrémités 13a du corps 13 du vérin correspondant est en appui sur l'écrou 46 tandis que l'autre extrémité 13a du corps 13 de l'autre vérin est en appui sur une entretoise 49 elle-même en appui sur la patte plane rigide de maintien 40 décrite en liaison avec la figure 9. A la différence de la figure 9, la patte 40 est disposée entre l 'entretoise 49 et la face plane de la branche 14a de la chape 14 opposée au bras autobloquant 16. Ce dernier est maintenu en appui de contact glissant sur la face correspondante opposée de la branche 14a de la chape 14 et l'axe cylindrique 41 de la partie d'extrémité inférieure de la patte 40 comprend la partie de plus grand diamètre 42 solidaire de cette patte et la partie de plus petit diamètre filetée 43 traversant la lumière 19 du bras autobloquant 16 et à l'extrémité de laquelle est vissé l'écrou 44 avec interposition entre cet écrou et le bras autobloquant 16 de la rondelle 45 de manière que le bras autobloquant 16 ne puisse être déplacé latéralement en position d'ouverture de tampon 2 lorsque la partie de plus grand diamètre 23 est dégagée de l'orifice 19a du bras autobloquant 16 en position d'ouverture de tampon pour permettre le basculement de ce tampon à sa position de fermeture. L'extrémité du fourreau 20 située du côté des parties cylindriques du plus petit et du plus grand diamètres 22, 23 de l'axe de liaison 18, contrairement aux figures 5, 6 et 9, ne fait pas saillie de la branche 14a de la chape 14 et est en affleurement avec la face de cette branche en regard de l'extrémité correspondante de bras autobloquant 16.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. Unlike 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. This the latter is maintained in sliding contact support on the opposite corresponding face of the branch 14a of the yoke 14 and the cylindrical axis 41 of the lower end portion of the lug 40 comprises the larger diameter portion 42 secured to this leg and the part of smaller threaded diameter 43 passing through the lumen 19 of the self-locking arm 16 and at the end of which is screwed the nut 44 with the interposition between this nut and the self-locking arm 16 of the washer 45 so that the self-locking arm 16 can not be moved laterally in the buffer opening position 2 when the larger diameter portion 23 is disengaged from the hole 19a of the self-locking arm 16 in the buffer open position to allow the tilting of this buffer to its position closure. 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.
En outre, une étiquette d'assistance 50 est fixée perpendiculairement au fourreau 20 entre les deux extrémités 13a des corps 13 des deux vérins 7. Cette étiquette 50, qui peut être en forme de plaque rigide métallique rectangulaire, comporte des inscriptions, visibles en figure 11, renseignant un opérateur sur le mode d'utilisation du dispositif de l'invention.In addition, 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.
Les tampons 2 sont réalisés en fonte, notamment sphéroïdale, mais ils peuvent être réalisés en toute autre matière. En outre, chaque tampon peut avoir une forme autre qu'en triangle rectangle, par exemple rectangulaire ou circulaire.The buffers 2 are made of cast iron, in particular spheroidal, but they can be made of any other material. In addition, each stamp may have a shape other than a right triangle, for example rectangular or circular.
Le dispositif de sécurité de l'invention non seulement améliore la sécurité du personnel en s 'opposant à tout rabattement accidentel de chaque tampon 2 sur le cadre 1, mais est d'un maniement aisé notamment lors de l'opération de déverrouillage du bras autobloquant 16 à la position verticale du tampon sans risque de blessure des doigts d'une main de l'utilisateur. En outre, le dispositif de l'invention est d'une structure simple et peu coûteuse. 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. In addition, the device of the invention is of a simple and inexpensive structure.

Claims

REVENDICATIONS
1. Equipement de voirie comprenant au moins un tampon (2) monté articulé à basculement au côté (3) d'un cadre de support (1) par au moins une charnière d'articulation (4) entre une position de fermeture du cadre de support (1) et une position d'ouverture de ce cadre et, pour chaque tampon (2), un dispositif de sécurité comprenant un bras autobloquant (16) dont l'une des extrémités est montée pivotante au côté (3) du cadre1. Road equipment comprising at least one buffer (2) pivotably mounted to the side (3) of a support frame (1) by at least one hinge hinge (4) between a closed position of the frame support (1) and an open position of this frame and, for each buffer (2), a safety device comprising a self-locking arm (16) whose one end is pivotally mounted to the side (3) of the frame
(1) autour d'un axe de pivotement (9) et l'autre extrémité est reliée au tampon (2) par un axe (18) solidaire du tampon (2) et monté coulissant dans une lumière oblongue longitudinale (19) du bras autobloquant (16) de manière à permettre l'entraînement en rotation de ce bras autour de son axe de pivotement (9) lors du basculement du tampon (2) entre ses positions d'ouverture et de fermeture et à automatiquement bloquer le tampon(1) about a pivot axis (9) and the other end is connected to the buffer (2) by an axis (18) integral with the buffer (2) and slidably mounted in a longitudinal oblong slot (19) of the arm self-locking device (16) so as to allow the rotation of this arm about its pivot axis (9) during the tilting of the buffer (2) between its open and closed positions and to automatically block the buffer
(2) à sa position d'ouverture, caractérisé en ce que l'axe de liaison (18) du bras autobloquant (16) au tampon(2) in its open position, characterized in that the connecting pin (18) of the self-locking arm (16) to the buffer
(2) comprend deux parties cylindriques adjacentes respectivement de plus petit diamètre (22) et de plus grand diamètre (23) et est axialement mobile relativement au tampon (2) sous l'action d'un organe élastique (27) qui sollicite la partie de plus petit diamètre (22) de l'axe de liaison (18) en engagement coulissant dans la lumière oblongue (19) du bras autobloquant (16) lors du basculement du tampon (2) entre ses deux positions d'ouverture et de fermeture et la partie de plus grand diamètre (23) de l'axe de liaison (18) en engagement bloqué dans un orifice circulaire (19a) de l'extrémité du bras autobloquant (16) en prolongement de la lumière oblongue (19) de ce bras lorsque le tampon (2) est amené à sa position d'ouverture. (2) comprises two adjacent cylindrical portions respectively of smaller diameter (22) and larger diameter (23) and is axially movable relative to the buffer (2) under the action of an elastic member (27) which solicits the part smaller diameter (22) of the connecting pin (18) slidably engaged in the oblong slot (19) of the self-locking arm (16) during the tilting of the pad (2) between its two open and closed positions and the larger diameter portion (23) of the connecting pin (18) in engagement locked in a circular hole (19a) of the end of the self-locking arm (16) in extension of the oblong slot (19) thereof. arm when the buffer (2) is brought to its open position.
2. Equipement selon la revendication 1, caractérisé en ce qu'en position de blocage du tampon (2) à sa position d'ouverture, la partie de plus grand diamètre (23) de l'axe de liaison (18) peut être libérée de l'orifice circulaire (19a) du bras autobloquant (16) par traction manuellement exercée sur l'axe de liaison (18) à 1 'encontre de la force de rappel exercée par l'organe élastique (27) sur l'axe de liaison (18) pour disposer la partie de plus petit diamètre (22) en regard de la lumière oblongue (19) du bras autobloquant (16) et permettre le basculement du tampon (2) vers sa position de fermeture . 2. Equipment according to claim 1, characterized in that in blocking position of the buffer (2) in its open position, the larger diameter portion (23) of the connecting pin (18) can be released from the circular hole (19a) of the self-locking arm (16) by manually pulling on the connecting pin (18) against the force of return by the elastic member (27) on the connecting pin (18) to arrange the smaller diameter portion (22) facing the oblong slot (19) of the self-locking arm (16) and allow the tilting of the buffer (2) to its closed position.
3. Equipement selon la revendication 1 ou 2, caractérisé en ce que les parties cylindriques de plus petit diamètre (22) et de plus grand diamètre (23) de l'axe de liaison (18) sont raccordées l'une à l'autre par un épaulement (29) maintenu en appui sur une face correspondante du bras autobloquant (16) par l'organe élastique (27) lorsque la partie cylindrique de plus petit diamètre (22) est engagée dans la lumière oblongue (19) du bras autobloquant (16) et en ce que l'axe de liaison (18) comporte une collerette (24) adjacente à la partie cylindrique de plus grand diamètre (23) à l'opposé de la partie cylindrique de plus petit diamètre (22) et qui est maintenue en appui par l'organe élastique (27) sur la face correspondante d'extrémité du bras autobloquant (16) comportant l'orifice circulaire (19a) lorsque le tampon (2) occupe sa position bloquée d'ouverture .3. Equipment according to claim 1 or 2, characterized in that the cylindrical portions of smaller diameter (22) and larger diameter (23) of the connecting pin (18) are connected to each other by a shoulder (29) held in abutment on a corresponding face of the self-locking arm (16) by the elastic member (27) when the cylindrical portion of smaller diameter (22) is engaged in the oblong slot (19) of the self-locking arm (16) and that the connecting pin (18) has a flange (24) adjacent to the larger diameter cylindrical portion (23) opposite the smaller diameter cylindrical portion (22) and which is held in abutment by the elastic member (27) on the corresponding end face of the self-locking arm (16) having the circular orifice (19a) when the buffer (2) is in its locked open position.
4. Equipement selon la revendication 3, caractérisé en ce que l'axe de liaison (18) est supporté axialement coulissant par une chape (14) du tampon (2) et dont une partie d'extrémité faisant saillie d'un côté de la chape (14) comporte les deux parties cylindriques adjacentes de diamètres différents (22,23) .4. Equipment according to claim 3, characterized in that the connecting pin (18) is supported axially sliding by a yoke (14) of the buffer (2) and an end portion projecting from one side of the clevis (14) has the two adjacent cylindrical portions of different diameters (22,23).
5. Equipement selon la revendication 4, caractérisé en ce que l'axe de liaison (18) est monté axialement coulissant dans un fourreau (20) solidaire de la chape (14) du tampon (2) et dont une partie d'extrémité (20a) située du même côté que les deux parties cylindriques adjacentes (22,23) est apte à recevoir la partie cylindrique de plus petit diamètre (22) de l'axe de liaison (18) lorsque sa partie de plus grand diamètre (23) est engagée dans l'orifice circulaire (19a) du bras autobloquant (16) avec l'épaulement de raccordement (29) entre ces deux parties cylindriques (22,23) en butée sur l'extrémité libre de la partie d'extrémité (20a) du fourreau (20) sous l'action de l'organe élastique (27) .5. Equipment according to claim 4, characterized in that the connecting pin (18) is mounted axially sliding in a sleeve (20) integral with the yoke (14) of the buffer (2) and an end portion ( 20a) on the same side as the two cylindrical parts adjacent (22,23) is adapted to receive the cylindrical portion of smaller diameter (22) of the connecting pin (18) when its larger diameter portion (23) is engaged in the circular hole (19a) of the self-locking arm (16) with the connecting shoulder (29) between these two cylindrical portions (22,23) abutting the free end of the end portion (20a) of the sleeve (20) under the action of the elastic member (27).
6. Equipement selon la revendication 5, caractérisé en ce que le bras autobloquant (16) se déplace en rotation autour de son axe de pivotement (9) entre l'épaulement (29) et l'extrémité libre de la partie d'extrémité en saillie (20a) du fourreau (20) .6. Equipment according to claim 5, characterized in that the self-locking arm (16) rotates about its pivot axis (9) between the shoulder (29) and the free end of the end portion. protrusion (20a) of the sheath (20).
7. Equipement selon la revendication 5 ou 6, caractérisé en ce que le fourreau (20) est fixé à la chape (14) par un écrou (21) engagé sur une partie filetée extérieurement de la partie d'extrémité en saillie (20a) du fourreau (20) et une tête (20b) solidaire de l'extrémité opposée du fourreau (20) et en appui sur la branche correspondante (14a) de la chape (14) .7. Equipment according to claim 5 or 6, characterized in that the sheath (20) is fixed to the yoke (14) by a nut (21) engaged on a threaded portion externally of the projecting end portion (20a). the sleeve (20) and a head (20b) integral with the opposite end of the sleeve (20) and bearing on the corresponding branch (14a) of the yoke (14).
8. Equipement selon l'une des revendications 5 à 7, caractérisé en ce que l'organe élastique (27) est un ressort hélicoïdal de compression monté coaxialement autour d'une partie d'extrémité de l'axe de liaison (18) en saillie de la chape (14) à l'opposé de la partie d'extrémité de cet axe comportant les deux parties cylindriques de diamètres différents (22,23) et qui est précontraint entre le fourreau (20) et un écrou (30) fixé à l'extrémité libre de la partie d'extrémité correspondante de l'axe de liaison (18) .8. Equipment according to one of claims 5 to 7, characterized in that the elastic member (27) is a helical compression spring coaxially mounted around an end portion of the connecting shaft (18). projection of the yoke (14) opposite the end portion of this axis having the two cylindrical portions of different diameters (22,23) and which is prestressed between the sleeve (20) and a nut (30) fixed at the free end of the corresponding end portion of the connecting pin (18).
9. Equipement selon la revendication 5 ou 6, caractérisé en ce que le fourreau (20) est fixé à la chape (14) par deux écrous (46, 47) solidaires d'une partie extérieurement filetée du fourreau (20) et enserrant la branche (14a) de la chape (14) opposée à l'autre branche (14a) adjacente au bras autobloquant (16) .9. Equipment according to claim 5 or 6, characterized in that the sleeve (20) is fixed to the yoke (14) by two nuts (46, 47) integral with an externally threaded portion of the sleeve (20) and enclosing the branch (14a) of the yoke (14) opposite to the other leg (14a) adjacent to the self-locking arm (16).
10. Equipement selon la revendication 9, caractérisé en ce que l'organe élastique (27) est un ressort hélicoïdal de compression monté coaxialement autour d'une partie d'extrémité de l'axe de liaison (18) en saillie de la chape (14) à l'opposé de la partie d'extrémité de cet axe comportant les deux parties cylindriques de diamètres différents (22, 23) et qui est précontraint entre l'un (47) des écrous de fixation du fourreau (20) à la branche (14a) de la chape (14) et un écrou (30) fixé à l'extrémité libre de la partie d'extrémité correspondante de l'axe de liaison (18) .10. Equipment according to claim 9, characterized in that the elastic member (27) is a helical compression spring mounted coaxially around an end portion of the connecting pin (18) projecting from the yoke ( 14) opposite the end portion of this axis having the two cylindrical portions of different diameters (22, 23) and which is prestressed between one (47) of the nuts securing the sleeve (20) to the branch (14a) of the yoke (14) and a nut (30) fixed to the free end of the corresponding end portion of the connecting pin (18).
11. Equipement selon l'une des revendications précédentes, caractérisé en ce qu'il comprend une poignée de préhension (26) solidaire de l'extrémité de l'axe de liaison (18) et permettant d'exercer une traction sur cet axe pour libérer la partie de plus grand diamètre (23) de l'orifice circulaire (19a) du bras autobloquant (16) . 11. Equipment according to one of the preceding claims, characterized in that it comprises a gripping handle (26) integral with the end of the connecting pin (18) and for exerting traction on this axis for releasing the larger diameter portion (23) from the circular hole (19a) of the self-locking arm (16).
12. Equipement selon l'une des revendications précédentes, caractérisé en ce que l'axe de liaison (18) est parallèle à l'axe de pivotement (9) du bras autobloquant (16) au côté (3) du cadre (1) et l'axe de pivotement (9) de ce bras est disposé en dessous de la charnière d'articulation (4) du tampon (2) au cadre (1) .Equipment according to one of the preceding claims, characterized in that the connecting pin (18) is parallel to the pivot axis (9) of the self-locking arm (16) at the side (3) of the frame (1). and the pivot axis (9) of this arm is arranged below the articulation hinge (4) of the buffer (2) to the frame (1).
13. Equipement selon l'une des revendications précédentes, caractérisé en ce qu'il comprend au moins un vérin (7) d'assistance à l'ouverture du tampon (2) et monté pivotant d'une part au côté (3) du cadre (1) sur le même axe (9) de pivotement du bras autobloquant (16) et d'autre part au tampon (2) sur un axe coaxial à l'axe de liaison ( 18 ) .13. Equipment according to one of the preceding claims, characterized in that it comprises at least one cylinder (7) for assistance in opening the buffer (2) and pivotally mounted on the one hand to the side (3) of the frame (1) on the same axis (9) of pivoting of the self-locking arm (16) and secondly to the buffer (2) on an axis coaxial with the connecting axis (18).
14. Equipement selon la revendication 13 lorsque considérée en combinaison avec la revendication 5, caractérisé en ce que le vérin d'assistance (7) est monté pivotant autour du fourreau (20) entre les deux branches (14a) de la chape (14) . 14. Equipment according to claim 13 when considered in combination with claim 5, characterized in that the assistance cylinder (7) is pivotally mounted around the sleeve (20) between the two legs (14a) of the yoke (14). .
15. Equipement selon l'une des revendications 2 à15. Equipment according to one of claims 2 to
14, caractérisé en ce qu'il comprend des moyens (40, 42, 43, 44, 45) solidaires du tampon (2) et aptes à maintenir latéralement le bras autobloquant (16) lorsque la partie de plus grand diamètre (23) de l'axe de liaison (18) et libérée de l'orifice circulaire (19a) du bras (16) .14, characterized in that it comprises means (40, 42, 43, 44, 45) integral with the buffer (2) and able to maintain laterally the self-locking arm (16) when the larger diameter portion (23) of the connecting pin (18) and released from the circular orifice (19a) of the arm (16).
16. Equipement selon l'une des revendications 5 à16. Equipment according to one of claims 5 to
15, caractérisé en ce qu'il comprend une étiquette rigide d'assistance (50) solidaire du fourreau (20) perpendiculairement à ce dernier.15, characterized in that it comprises a rigid support tag (50) integral with the sleeve (20) perpendicular thereto.
17. Equipement selon l'une des revendications précédentes, caractérisé en ce qu'il fait partie d'un regard de chaussée. 17. Equipment according to one of the preceding claims, characterized in that it is part of a manhole.
EP10715296.9A 2009-03-18 2010-03-05 Road system apparatus with a safety device for at least one buffer of the apparatus Not-in-force EP2408973B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL10715296T PL2408973T3 (en) 2009-03-18 2010-03-05 Road system apparatus with a safety device for at least one buffer of the apparatus

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0951728A FR2943359B1 (en) 2009-03-18 2009-03-18 SAFETY DEVICE FOR AT LEAST ONE BUFFER, IN PARTICULAR A PAVEMENT LOOK
PCT/FR2010/050371 WO2010106266A1 (en) 2009-03-18 2010-03-05 Road system apparatus with a safety device for at least one buffer of the apparatus

Publications (2)

Publication Number Publication Date
EP2408973A1 true EP2408973A1 (en) 2012-01-25
EP2408973B1 EP2408973B1 (en) 2015-08-19

Family

ID=41227539

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10715296.9A Not-in-force EP2408973B1 (en) 2009-03-18 2010-03-05 Road system apparatus with a safety device for at least one buffer of the apparatus

Country Status (6)

Country Link
EP (1) EP2408973B1 (en)
ES (1) ES2552092T3 (en)
FR (1) FR2943359B1 (en)
PL (1) PL2408973T3 (en)
PT (1) PT2408973E (en)
WO (1) WO2010106266A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3029947B1 (en) * 2014-12-12 2017-01-27 Ej Emea GROUND SEAT ASSEMBLY COMPRISING FRAME, COVER AND KIT FOR JOINT ASSEMBLY OF COVER TO FRAME
FR3095456B1 (en) * 2019-04-24 2021-04-02 Fond De Brousseval & Montreuil IMPROVED ROAD SYSTEM
FR3096377B1 (en) * 2019-05-24 2021-04-30 Fond De Brousseval & Montreuil IMPROVED SAFETY ROAD SYSTEM

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2773278A (en) * 1952-05-10 1956-12-11 Atwood Vacuum Machine Co Automobile door hinge embodying hold-open means
GB1555481A (en) * 1975-06-17 1979-11-14 Eildon Marketing Security device for limiting the opening movement of a door
FR2674879B1 (en) * 1991-04-05 1995-08-04 Sodif Sa SECURITY DEVICE FOR ARTICULATED PAVEMENT OF LOOKING ROAD.
GB2272236B (en) * 1992-11-07 1996-05-01 Frederick Jones & Son Improvements relating to pivotal covers
US5765268A (en) * 1997-03-28 1998-06-16 Casket Shells, Incorporated Casket lid support
FR2787476B1 (en) * 1998-12-22 2001-03-02 Barat Sa IMPROVEMENTS MADE TO A DEVICE FOR LOCKING AN ACCESS HATCH TO GALLERIES AND UNDERGROUND CIVIL ENGINEERING WORKS, CONSISTING OF AT LEAST ONE LEAF

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2010106266A1 *

Also Published As

Publication number Publication date
EP2408973B1 (en) 2015-08-19
FR2943359B1 (en) 2016-01-22
PL2408973T3 (en) 2016-01-29
FR2943359A1 (en) 2010-09-24
PT2408973E (en) 2015-11-18
WO2010106266A1 (en) 2010-09-23
ES2552092T3 (en) 2015-11-25

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