EP0545840B1 - Height-adjustable hydrant - Google Patents

Height-adjustable hydrant Download PDF

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Publication number
EP0545840B1
EP0545840B1 EP92470033A EP92470033A EP0545840B1 EP 0545840 B1 EP0545840 B1 EP 0545840B1 EP 92470033 A EP92470033 A EP 92470033A EP 92470033 A EP92470033 A EP 92470033A EP 0545840 B1 EP0545840 B1 EP 0545840B1
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EP
European Patent Office
Prior art keywords
extension piece
ring
key
box according
service box
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.)
Expired - Lifetime
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EP92470033A
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German (de)
French (fr)
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EP0545840A1 (en
Inventor
Jean-Claude Hauer
Bertrand Guillaume
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Pont a Mousson SA
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Pont a Mousson SA
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Publication of EP0545840A1 publication Critical patent/EP0545840A1/en
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    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
    • E03B9/00—Methods or installations for drawing-off water
    • E03B9/02—Hydrants; Arrangements of valves therein; Keys for hydrants
    • E03B9/08—Underground hydrants
    • E03B9/10—Protective plates or covers

Definitions

  • the present invention relates to a keyhole adjustable in height, in particular for accessing a valve placed under a roadway or a sidewalk.
  • the height adjustment of a keyhole allows it to be adapted to variations in the height of the ground due in particular to the repair of the road or sidewalk.
  • the height adjustment of the keyhole is limited by the height of the riser or by the end of its thread travel. Consequently, in the case where new layers of coating increase the height of the ground beyond the maximum height of the riser, it is necessary to extract the mouth from the ground and replace the sole at a more suitable height.
  • the object of the invention is to make it possible to adjust the height of a keyhole so as to avoid the topping of the extension during earthwork operations, or at least to limit the consequences thereof, and to be able to adapt the keyhole. to significant increases in ground height without having to move the sole.
  • the invention relates to a key-adjustable mouth height of the aforementioned type, characterized in that the lower part of the extension is introduced by vertical translation from top to bottom in an annular member disposed inside the sole and cooperating by screwing with this sole, the riser and the annular member comprising complementary means for securing in rotation and complementary means for supporting and support of the riser arranged respectively on the riser and on the annular member and cooperating with each other under the effect of the weight of the riser.
  • a keyhole 10 adjustable in height, for a valve (not shown in the figures) placed under a roadway or under a sidewalk.
  • This keyhole arranged in the ground, forms an access for a valve operating key.
  • the keyed mouth 10 comprises a sole 12 intended to be fixed in the ground and an extension 14 telescopically mounted in the sole 12 so as to be adjustable in height.
  • a closing pad 16 of known type, for example of the bayonet type, is placed on the upper end of the riser 14, considering FIG. 1.
  • the sole 12 is of generally tubular shape and comprises in its lower part, considering FIG. 1, a flange 18 for its anchoring in the ground. Radial wings 20 extending between the lower end of the sole 12 and the lower face of the flange 18 immobilize the sole in rotation by cooperating with the ground.
  • the riser 14, of generally tubular shape, is mounted in an annular member 22 disposed inside the sole 12.
  • This annular member is constituted by a helical ring 22 of circular cross section.
  • the ring 22 cooperates by screwing with a thread 24 of the same pitch formed on the internal surface of the sole 12 and extends over a little less than one turn of the thread, as can be seen in FIG. 2.
  • the riser 14 comprises two cylinders 26, 28 of different external diameters.
  • the cylinder 26 of large external diameter delimits the upper part of the riser, considering FIG. 1, and projects by the upper end of the sole 12.
  • the cylinder 28 of small external diameter delimits the lower part of the riser and cooperates with the internal contour of the ring 22.
  • the riser 14 and the ring 22 comprise complementary means of support and support and complementary means of securing in rotation which will be described below.
  • the cylinders 26, 28 of the riser have smooth external surfaces connected to each other by a helical surface 30 of a pitch identical to that of the ring 22, extending over a sector of tower slightly greater than that of the ring .
  • this surface helical 30 is constituted by a helical ramp with transverse slope.
  • the helical ramp 30 is supported on the ring 22, under the effect of the weight of the riser 14, so as to axially position the latter relative to the ring allowing the free lifting of the riser by an operator.
  • the external surface of the cylinder 28 of small external diameter and the helical ramp 30 with transverse cant also constitute means for centering the riser relative to the ring 22.
  • the helical bearing surface 30 of the riser may have other shapes than those of a transverse cant ramp, in particular it may have a curved cross section of complementary shape to the cross section of the ring.
  • the ring may have a section other than circular.
  • the riser 14 is integral in rotation with the ring 22 by means of an axial rib 32 shown in more detail in FIG. 2.
  • a first lateral face 32A of the rib 32 extends from the lower edge of the riser to the lower end of the helical ramp 30, considering FIGS. 1 and 2, and a second face 32B extends from the lower edge of the riser to the upper end of the helical ramp 30.
  • the lateral faces 32A, 32B of the rib 32 cooperate respectively with the faces 22A, 22B forming the ends of the helical ring 22.
  • the width of the rib 32 is less than the width of the free sector between the ends 22A, 22B of the ring 22 so that the rib cooperates with play with these ends 22A, 22B.
  • the width of the rib is approximately 10 mm and the ends 22A, 22B are spaced apart by 15 mm.
  • FIG. 1 There is shown in Figure 1 the upper end of a fixed extension tube 34, of known type, for guiding the operating key to the valve disposed under the roadway or the sidewalk.
  • the elongated tube 34 opens out inside the extension 14 while being substantially coaxial with the whole of the keyed mouth.
  • a diaphragm 36 integrally formed with the internal surface of the riser 14, guides the key for its introduction into the extension tube 34.
  • the diaphragm 36 with an inner diameter less than the outside diameter of the extension tube 34, maintains a minimum spacing between the pad 16 and the upper end of the extension tube 34. This minimum spacing makes it possible to prevent the upper end of an excessively long extension tube from hindering the closing of the pad 16.
  • the internal thread 24 of the sole 12 is provided in its upper part with an end-of-stroke stop 38 intended to cooperate with the upper end face 22B of the ring 22 to limit its upward movement.
  • the seal between the sole 12 and the riser 14 is ensured by an annular seal 40 fixed on the upper end of the sole 12 and cooperating with the external surface of the cylinder 26 of the riser 14.
  • the riser 14 has on one and / or the other of the lateral faces 32A, 32B of its rib 32, a projection forming an abutment, positioned in such a way that, when the mouthpiece is mounted, the end of the ring 22 located opposite said abutment comes by elasticity to snap between this abutment and the helical ramp 30 connecting the cylinders 26, 28 of the riser 14, this snap being obtained by simple axial push down on the riser during its introduction into the sole, while conversely, an upward pull on said riser makes it possible, from the latched position, to disengage the latter from the ring 22; preferably, this stop has on its outer face a double convex cam ramp consisting of an upper ramp inclined downward and a lower ramp inclined upward.
  • the securing between the ring 22 and the riser 14 also makes it possible to oppose the downward movement of the assembly constituted by the sole 12 and the ring 22, in particular when the keyed mouth, prior to its sealing in the ground, simply rests on the fixed extension tube 34.
  • the ring 22 is screwed once and for all into the sole 12 through the lower part thereof.
  • the seal 40 is then placed on the upper end of the sole, then the riser is placed in the ring, by simple axial movement downwards until the ramp 30 rests on the ring.
  • the key mouth is arranged in the ground, in line with an elongated tube 34 for guiding the key, which generally penetrates the riser.
  • this mistletoe causes the screwing or unscrewing of the ring 22, according to the direction of rotation. It is thus possible to adjust the height of the keyhole to bring the upper end of the extension 14 and the pad 16 flush with the surface of the ground.
  • the topping of the riser is avoided by removing it from the mouth with a key, by simple lifting, and by temporarily blocking the unoccupied orifice, or, possibly, by driving it in sufficiently by screwing.
  • the ring is applied elastically against the internal thread of the sole, this in order to reduce the clearance between the riser and the ring capable of creating noise by knocking under the effect of the vibrations to which the keyhole can be subjected.
  • Figure 3 there is shown in Figure 3 an alternative embodiment of the invention which achieves this goal.
  • axial projections 42 have been placed on the cylinder 28 of small outside diameter. These projections have a decreasing thickness towards the bottom of the extension, considering FIG. 3, and cooperate with the internal contour of the ring 22 so as to slightly deform it elastically, thus making it possible to adapt the external contour of said ring 22 to the internal thread 24 of sole 12.
  • the mounting of the extension in the ring being done without additional part, using additional means of support and support and complementary means of securing in rotation, the removal and the replacement of the extension is very simple.
  • the clearance provided between the rotational securing rib and the ends of the ring facilitates disassembly and assembly of the riser.
  • the helical ramp with transverse slope and the external surface of the cylinder of small external diameter constitute effective complementary means of centering the extension in the ring.
  • the end stop of the threading of the sole makes it possible to limit the displacement of the ring in height and to avoid damage to the seal by crushing against the ring.
  • the external surface of the upper cylinder of the riser being smooth, it does not catch on the ground in which it is placed, this mistletoe facilitates the height adjustment of the riser. Furthermore, the annular seal provides a reliable seal between the fixed base and the mobile riser.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Stringed Musical Instruments (AREA)
  • Jet Pumps And Other Pumps (AREA)
  • Slot Machines And Peripheral Devices (AREA)
  • Electrophonic Musical Instruments (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Finger-Pressure Massage (AREA)
  • Prostheses (AREA)
  • Road Paving Structures (AREA)
  • Rolling Contact Bearings (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)
  • Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
  • Road Repair (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
  • Vehicle Body Suspensions (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Sheet Holders (AREA)
  • Closures For Containers (AREA)

Abstract

This hydrant comprises a base plate (12) fixed in the ground, a helical ring (22) positioned inside the base plate (12) screwing into an internal thread (24) in the base plate and a height-adjustable raising block mounted in the ring (22). The ring (22) extends over less than one turn of the thread in the base plate (12). The raising block (14) is integral in rotation with the ring (22) by virtue of an axial rib (32) working in a loose fit with the ends (22A, 22B) of the ring. The raising block (14) comprises a helical surface (30) bearing on the surface of the ring (22) under the effect of the weight of the raising block, allowing it to be raised by an operator. <IMAGE>

Description

La présente invention concerne une bouche à clé réglable en hauteur, notamment pour accéder à une vanne placée sous une chaussée ou un trottoir.The present invention relates to a keyhole adjustable in height, in particular for accessing a valve placed under a roadway or a sidewalk.

Le réglage en hauteur d'une bouche à clé permet d'adapter celle-ci aux variations de hauteur du sol dues en particulier à la réfection de la chaussée ou du trottoir.The height adjustment of a keyhole allows it to be adapted to variations in the height of the ground due in particular to the repair of the road or sidewalk.

On connaît déjà dans l'état de la technique des bouches à clé réglables en hauteur, du type comprenant une semelle et une rehausse télescopiques. L'extrémité libre de la rehausse est généralement munie d'un tampon de fermeture. La semelle est fixée dans le sol, et la rehausse est réglable en hauteur, par exemple en coopérant par vissage avec la semelle, de façon à faire affleurer le tampon de fermeture à la surface du sol.Are already known in the prior art key mouths adjustable in height, of the type comprising a sole and a telescopic riser. The free end of the extension is generally provided with a closure pad. The sole is fixed in the ground, and the riser is adjustable in height, for example by cooperating by screwing with the sole, so as to make the closure pad flush with the surface of the ground.

Au cours de la réfection de la chaussée, il arrive fréquemment que la rehausse d'une bouche à clé subisse un étêtage lors du passage d'engins de raclage du sol. Dans ce cas la rehausse est endommagée de façon irréversible ; avec les bouches à clé classiques, l'extraction et le remplacement de la rehausse est impossible, et par suite l'ensemble de la bouche à clé doit être remplacé.During the repair of the roadway, it often happens that the enhancement of a keyhole undergoes topping when passing scraping machines from the ground. In this case the extension is irreversibly damaged; with classic keyholes, extraction and replacement of the extension is impossible, and therefore the whole keyhole must be replaced.

De plus, le réglage en hauteur de la bouche à clé est limité par la propre hauteur de la rehausse ou par la fin de course de son filetage. Par conséquent, dans le cas où de nouvelles couches de revêtement augmentent la hauteur du sol au-delà de la hauteur maximale de la rehausse, il faut extraire la bouche à clé du sol et remettre en place la semelle à une hauteur mieux adaptée.In addition, the height adjustment of the keyhole is limited by the height of the riser or by the end of its thread travel. Consequently, in the case where new layers of coating increase the height of the ground beyond the maximum height of the riser, it is necessary to extract the mouth from the ground and replace the sole at a more suitable height.

L'invention a pour but de permettre de régler en hauteur une bouche à clé de façon à éviter l'étêtage de la rehausse au cours des opérations de terrassement, ou au moins à en limiter les conséquences, et à pouvoir adapter la bouche à clé à des augmentations importantes de hauteur du sol sans avoir à déplacer la semelle.The object of the invention is to make it possible to adjust the height of a keyhole so as to avoid the topping of the extension during earthwork operations, or at least to limit the consequences thereof, and to be able to adapt the keyhole. to significant increases in ground height without having to move the sole.

A cet effet l'invention a pour objet une bouche à clé réglable en hauteur du type précité, caractérisée en ce que la partie inférieure de la rehausse est introduite par translation verticale de haut en bas dans un organe annulaire disposé à l'intérieur de la semelle et coopérant par vissage avec cette semelle, la rehausse et l'organe annulaire comportant des moyens complémentaires de solidarisation en rotation et des moyens complémentaires d'appui et de support de la rehausse agencés respectivement sur la rehausse et sur l'organe annulaire et coopérant entre eux sous l'effet du poids de la rehausse.To this end the invention relates to a key-adjustable mouth height of the aforementioned type, characterized in that the lower part of the extension is introduced by vertical translation from top to bottom in an annular member disposed inside the sole and cooperating by screwing with this sole, the riser and the annular member comprising complementary means for securing in rotation and complementary means for supporting and support of the riser arranged respectively on the riser and on the annular member and cooperating with each other under the effect of the weight of the riser.

Suivant d'autres caractéristiques de l'invention :

  • l'organe annulaire comprend un anneau hélicoïdal à section transversale circulaire, coopérant avec un filetage interne de la semelle et s'étendant sur moins d'un tour de filetage ;
  • l'anneau hélicoïdal est appliqué élastiquement contre le filetage interne de la semelle ;
  • la rehausse comprend deux cylindres coaxiaux de diamètres externes différents et les moyens d'appui de la rehausse comprennent une surface hélicoïdale reliant les surfaces externes des deux cylindres, coopérant avec la surface de l'anneau ;
  • la surface hélicoïdale et le cylindre de petit diamètre externe forment des moyens de centrage de la rehausse par rapport à l'anneau ;
  • la surface hélicoïdale forme une rampe hélicoïdale à dévers transversal ;
  • les moyens de solidarisation en rotation de la rehausse et de l'anneau hélicoïdal comprennent une nervure axiale solidaire de la rehausse dont les faces latérales coopèrent avec les faces formant les extrémités de l'anneau hélicoïdal ;
  • la largeur de la nervure de la rehausse est inférieure à la largeur du secteur libre entre les faces d'extrémité de l'anneau de façon que les faces latérales de la nervure coopèrent avec jeu avec les faces d'extrémité de l'anneau ;
  • l'anneau hélicoïdal est assujetti à la rehausse par l'intermédiaire d'une butée en saillie sur l'une et/ou l'autre des faces latérales de la nervure de la rehausse ;
  • la surface externe de la partie de la rehausse faisant saillie à l'extérieur de la semelle est lisse ;
  • la bouche à clé comprend un joint d'étanchéité annulaire porté par l'extrémité de la semelle traversée par la rehausse, coopérant avec la surface externe de cette dernière ;
  • la semelle comporte des moyens de limitation de la course de l'organe annulaire, au moins vers le haut.
According to other characteristics of the invention:
  • the annular member comprises a helical ring of circular cross section, cooperating with an internal thread of the sole and extending over less than one turn of the thread;
  • the helical ring is applied elastically against the internal thread of the sole;
  • the extension comprises two coaxial cylinders of different external diameters and the support means of the extension include a helical surface connecting the external surfaces of the two cylinders, cooperating with the surface of the ring;
  • the helical surface and the cylinder of small external diameter form means for centering the extension relative to the ring;
  • the helical surface forms a helical ramp with transverse cant;
  • the means for securing in rotation the riser and the helical ring comprise an axial rib secured to the riser, the lateral faces of which cooperate with the faces forming the ends of the helical ring;
  • the width of the rib of the extension is less than the width of the free sector between the end faces of the ring so that the lateral faces of the rib cooperate with play with the end faces of the ring;
  • the helical ring is secured to the riser by means of a projecting stop on one and / or the other of the lateral faces of the rib of the riser;
  • the external surface of the part of the riser projecting from the outside of the sole is smooth;
  • the keyed mouth comprises an annular seal carried by the end of the sole through which the riser cooperates with the external surface of the latter;
  • the sole includes means for limiting the stroke of the annular member, at least upwards.

Suivant une variante de réalisation de l'invention :

  • le cylindre de petit diamètre externe de la rehausse comprend des saillies axiales d'épaisseur radiale décroissante vers l'extrémité libre de ce cylindre.
According to an alternative embodiment of the invention:
  • the cylinder of small external diameter of the extension comprises axial projections of decreasing radial thickness towards the free end of this cylinder.

Des exemples de réalisation de l'invention vont être décrits ci-dessous en se référant aux figures annexées dans lesquelles :

  • la figure 1 est une vue en coupe longitudinale avec un arrachement d'une bouche à clé selon l'invention ;
  • la figure 2 est une vue partielle en élévation avec un arrachement, de la rehausse montée dans l'organe annulaire ;
  • la figure 3 est une vue similaire à la figure 2 montrant une rehausse suivant un autre mode de réalisation de l'invention.
Examples of embodiments of the invention will be described below with reference to the appended figures in which:
  • Figure 1 is a longitudinal sectional view with a cutaway of a key mouth according to the invention;
  • Figure 2 is a partial elevational view with a cutaway, of the riser mounted in the annular member;
  • Figure 3 is a view similar to Figure 2 showing an extension according to another embodiment of the invention.

On voit sur la figure 1 une bouche à clé 10, réglable en hauteur, pour une vanne (non représentée sur les figures) placée sous une chaussée ou sous un trottoir. Cette bouche à clé, disposée dans le sol, forme un accès pour une clé de manoeuvre de la vanne.We see in Figure 1 a keyhole 10, adjustable in height, for a valve (not shown in the figures) placed under a roadway or under a sidewalk. This keyhole, arranged in the ground, forms an access for a valve operating key.

La bouche à clé 10 comprend une semelle 12 destinée à être fixée dans le sol et une rehausse 14 montée télescopique dans la semelle 12 de façon à être réglable en hauteur. Un tampon de fermeture 16 de type connu, par exemple du type à baïonnette, est disposé sur l'extrémité supérieure de la rehausse 14, en considérant la figure 1.The keyed mouth 10 comprises a sole 12 intended to be fixed in the ground and an extension 14 telescopically mounted in the sole 12 so as to be adjustable in height. A closing pad 16 of known type, for example of the bayonet type, is placed on the upper end of the riser 14, considering FIG. 1.

La semelle 12 est de forme générale tubulaire et comporte dans sa partie inférieure, en considérant la figure 1, une collerette 18 pour son ancrage dans le sol. Des ailes radiales 20 s'étendant entre l'extrémité inférieure de la semelle 12 et la face inférieure de la collerette 18 immobilisent en rotation la semelle en coopérant avec le sol.The sole 12 is of generally tubular shape and comprises in its lower part, considering FIG. 1, a flange 18 for its anchoring in the ground. Radial wings 20 extending between the lower end of the sole 12 and the lower face of the flange 18 immobilize the sole in rotation by cooperating with the ground.

La rehausse 14, de forme générale tubulaire, est montée dans un organe annulaire 22 disposé à l'intérieur de la semelle 12. Cet organe annulaire est constitué par un anneau 22 hélicoïdal de section transversale circulaire. L'anneau 22 coopère par vissage avec un filetage 24 de même pas ménagé sur la surface interne de la semelle 12 et s'étend sur un peu moins d'un tour de filetage, comme on le voit sur la figure 2.The riser 14, of generally tubular shape, is mounted in an annular member 22 disposed inside the sole 12. This annular member is constituted by a helical ring 22 of circular cross section. The ring 22 cooperates by screwing with a thread 24 of the same pitch formed on the internal surface of the sole 12 and extends over a little less than one turn of the thread, as can be seen in FIG. 2.

La rehausse 14 comprend deux cylindres 26,28 de diamètres externes différents. Le cylindre 26 de grand diamètre externe délimite la partie supérieure de la rehausse, en considérant la figure 1, et fait saillie par l'extrémité supérieure de la semelle 12. Le cylindre 28 de petit diamètre externe délimite la partie inférieure de la rehausse et coopère avec le contour interne de l'anneau 22.The riser 14 comprises two cylinders 26, 28 of different external diameters. The cylinder 26 of large external diameter delimits the upper part of the riser, considering FIG. 1, and projects by the upper end of the sole 12. The cylinder 28 of small external diameter delimits the lower part of the riser and cooperates with the internal contour of the ring 22.

La rehausse 14 et l'anneau 22 comprennent des moyens complémentaires d'appui et de support et des moyens complémentaires de solidarisation en rotation que l'on va décrire ci-dessous.The riser 14 and the ring 22 comprise complementary means of support and support and complementary means of securing in rotation which will be described below.

Les cylindres 26,28 de la rehausse ont des surfaces externes lisses reliées entre elles par une surface hélicoïdale 30 d'un pas identique à celui de l'anneau 22, s'étendant sur un secteur de tour légèrement supérieur à celui de l'anneau. Dans l'exemple décrit, cette surface hélicoïdale 30 est constituée par une rampe hélicoïdale à dévers transversal.The cylinders 26, 28 of the riser have smooth external surfaces connected to each other by a helical surface 30 of a pitch identical to that of the ring 22, extending over a sector of tower slightly greater than that of the ring . In the example described, this surface helical 30 is constituted by a helical ramp with transverse slope.

La rampe hélicoïdale 30 est en appui sur l'anneau 22, sous l'effet du poids de la rehausse 14, de façon à positionner axialement celle-ci par rapport à l'anneau en permettant le libre soulèvement de la rehausse par un opérateur.The helical ramp 30 is supported on the ring 22, under the effect of the weight of the riser 14, so as to axially position the latter relative to the ring allowing the free lifting of the riser by an operator.

La surface externe du cylindre 28 de petit diamètre externe et la rampe hélicoïdale 30 à dévers transversal constituent par ailleurs des moyens de centrage de la rehausse par rapport à l'anneau 22.The external surface of the cylinder 28 of small external diameter and the helical ramp 30 with transverse cant also constitute means for centering the riser relative to the ring 22.

Il va de soi que la surface hélicoïdale d'appui 30 de la rehausse peut avoir d'autres formes que celles d'une rampe à dévers transversal, en particulier elle peut avoir une section transversale courbe de forme complémentaire à la section transversale de l'anneau. De plus, l'anneau peut avoir une section autre que circulaire.It goes without saying that the helical bearing surface 30 of the riser may have other shapes than those of a transverse cant ramp, in particular it may have a curved cross section of complementary shape to the cross section of the ring. In addition, the ring may have a section other than circular.

La rehausse 14 est solidaire en rotation de l'anneau 22 au moyen d'une nervure axiale 32 montrée plus en détail à la figure 2. Une première face latérale 32A de la nervure 32 s'étend du bord inférieur de la rehausse jusqu'à l'extrémité inférieure de la rampe hélicoïdale 30, en considérant les figures 1 et 2, et une seconde face 32B s'étend du bord inférieur de la rehausse jusqu'à l'extrémité supérieure de la rampe hélicoïdale 30. Les faces latérales 32A,32B de la nervure 32 coopèrent respectivement avec les faces 22A,22B formant les extrémités de l'anneau hélicoïdal 22. On voit sur la figure 2 que la largeur de la nervure 32 est inférieure à la largeur du secteur libre entre les extrémités 22A,22B de l'anneau 22 de façon que la nervure coopère avec jeu avec ces extrémités 22A,22B. Dans l'exemple décrit, la largeur de la nervure est d'environ 10 mm et les extrémités 22A,22B sont espacées entre elles de 15 mm.The riser 14 is integral in rotation with the ring 22 by means of an axial rib 32 shown in more detail in FIG. 2. A first lateral face 32A of the rib 32 extends from the lower edge of the riser to the lower end of the helical ramp 30, considering FIGS. 1 and 2, and a second face 32B extends from the lower edge of the riser to the upper end of the helical ramp 30. The lateral faces 32A, 32B of the rib 32 cooperate respectively with the faces 22A, 22B forming the ends of the helical ring 22. It can be seen in FIG. 2 that the width of the rib 32 is less than the width of the free sector between the ends 22A, 22B of the ring 22 so that the rib cooperates with play with these ends 22A, 22B. In the example described, the width of the rib is approximately 10 mm and the ends 22A, 22B are spaced apart by 15 mm.

On décrira maintenant des moyens de limitation du déplacement axial de la rehausse et les moyens d'étanchéité, en regard de la figure 1.We will now describe means for limiting the axial displacement of the extension and the sealing means, with reference to FIG. 1.

On a représenté sur la figure 1 l'extrémité supérieure d'un tube allonge fixe 34, de type connu, destiné au guidage de la clé de manoeuvre jusqu'à la vanne disposée sous la chaussée ou le trottoir. Le tube allonge 34 débouche à l'intérieur de la rehausse 14 en étant sensiblement coaxial à l'ensemble de la bouche à clé.There is shown in Figure 1 the upper end of a fixed extension tube 34, of known type, for guiding the operating key to the valve disposed under the roadway or the sidewalk. The elongated tube 34 opens out inside the extension 14 while being substantially coaxial with the whole of the keyed mouth.

Un diaphragme 36, venu de matière avec la surface interne de la rehausse 14, assure le guidage de la clé pour son introduction dans le tube allonge 34. De plus, le diaphragme 36, de diamètre intérieur inférieur au diamètre extérieur du tube allonge 34, permet de maintenir un écartement minimum entre le tampon 16 et l'extrémité supérieure du tube allonge 34. Cet écartement minimum permet d'éviter que l'extrémité supérieure d'un tube allonge trop long ne gêne la fermeture du tampon 16.A diaphragm 36, integrally formed with the internal surface of the riser 14, guides the key for its introduction into the extension tube 34. In addition, the diaphragm 36, with an inner diameter less than the outside diameter of the extension tube 34, maintains a minimum spacing between the pad 16 and the upper end of the extension tube 34. This minimum spacing makes it possible to prevent the upper end of an excessively long extension tube from hindering the closing of the pad 16.

Par ailleurs, le filetage interne 24 de la semelle 12 est muni dans sa partie supérieure d'une butée de fin de course 38 destinée à coopérer avec la face d'extrémité supérieure 22B de l'anneau 22 pour limiter son déplacement vers le haut.Furthermore, the internal thread 24 of the sole 12 is provided in its upper part with an end-of-stroke stop 38 intended to cooperate with the upper end face 22B of the ring 22 to limit its upward movement.

L'étanchéité entre la semelle 12 et la rehausse 14 est assurée par un joint annulaire 40 fixé sur l'extrémité supérieure de la semelle 12 et coopérant avec la surface externe du cylindre 26 de la rehausse 14.The seal between the sole 12 and the riser 14 is ensured by an annular seal 40 fixed on the upper end of the sole 12 and cooperating with the external surface of the cylinder 26 of the riser 14.

Il peut être avantageux également, lorsqu'on souhaite éviter une extraction accidentelle de la rehausse 14, d'assujettir celle-ci à l'anneau 22. A cet effet, en variante de réalisation de l'invention (non représentée), la rehausse 14 présente sur l'une et/ou l'autre des faces latérales 32A,32B de sa nervure 32, une saillie formant butée, positionnée de manière telle que, lors du montage de la bouche à clé, l'extrémité de l'anneau 22 situé en regard de ladite butée vient par élasticité s'encliqueter entre cette butée et la rampe hélicoïdale 30 reliant les cylindres 26,28 de la rehausse 14, cet encliquetage étant obtenu par simple poussée axiale vers le bas sur la rehausse lors de son introduction dans la semelle, alors qu'à l'inverse, une traction vers le haut sur ladite rehausse permet, à partir de la position encliquetée, de désengager celle-ci de l'anneau 22 ; de manière préférentielle, cette butée comporte sur sa face extérieure une double rampe de came convexe constituée d"une rampe supérieure inclinée vers le bas et d'une rampe inférieure inclinée vers le haut. L'assujettissement entre l'anneau 22 et la rehausse 14 permet également de s'opposer au déplacement vers le bas de l'ensemble constitué par la semelle 12 et l'anneau 22, notamment lorsque la bouche à clé, préalablement à son scellement dans le sol, repose simplement sur le tube allonge fixe 34.It may also be advantageous, when it is desired to avoid accidental extraction of the riser 14, to subject it to the ring 22. For this purpose, as an alternative embodiment of the invention (not shown), the riser 14 has on one and / or the other of the lateral faces 32A, 32B of its rib 32, a projection forming an abutment, positioned in such a way that, when the mouthpiece is mounted, the end of the ring 22 located opposite said abutment comes by elasticity to snap between this abutment and the helical ramp 30 connecting the cylinders 26, 28 of the riser 14, this snap being obtained by simple axial push down on the riser during its introduction into the sole, while conversely, an upward pull on said riser makes it possible, from the latched position, to disengage the latter from the ring 22; preferably, this stop has on its outer face a double convex cam ramp consisting of an upper ramp inclined downward and a lower ramp inclined upward. The securing between the ring 22 and the riser 14 also makes it possible to oppose the downward movement of the assembly constituted by the sole 12 and the ring 22, in particular when the keyed mouth, prior to its sealing in the ground, simply rests on the fixed extension tube 34.

On décrira maintenant le montage de la bouche à clé selon l'invention.We will now describe the assembly of the key mouth according to the invention.

L'anneau 22 est vissé une fois pour toute dans la semelle 12 par la partie inférieure de celle-ci. On dispose ensuite le joint d'étanchéité 40 sur l'extrémité supérieure de la semelle, puis on met en place la rehausse dans l'anneau, par simple déplacement axial vers le bas jusqu'à appui de la rampe 30 sur l'anneau.The ring 22 is screwed once and for all into the sole 12 through the lower part thereof. The seal 40 is then placed on the upper end of the sole, then the riser is placed in the ring, by simple axial movement downwards until the ramp 30 rests on the ring.

Une fois montée, la bouche à clé est disposée dans le sol, au droit d'un tube allonge 34 de guidage de clé, lequel pénètre généralement dans la rehausse.Once mounted, the key mouth is arranged in the ground, in line with an elongated tube 34 for guiding the key, which generally penetrates the riser.

On règle la hauteur de la rehausse 14 en l'entraînant en rotation, ce gui provoque le vissage ou le dévissage de l'anneau 22, selon le sens de rotation. On peut ainsi régler la hauteur de la bouche à clé pour faire affleurer l'extrémité supérieure de la rehausse 14 et le tampon 16 à la surface du sol. En cas de réfection de la chaussée, et d'utilisation d'engins de raclage du sol ; on évite l'étêtage de la rehausse en enlevant celle-ci de la bouche à clé, par simple soulèvement, et en bouchant temporairement l'orifice inoccupé, ou, éventuellement, en l'enfonçant suffisamment par vissage.We adjust the height of the extension 14 by driving it in rotation, this mistletoe causes the screwing or unscrewing of the ring 22, according to the direction of rotation. It is thus possible to adjust the height of the keyhole to bring the upper end of the extension 14 and the pad 16 flush with the surface of the ground. In the event of repair of the roadway, and use of scraping machines of the ground; the topping of the riser is avoided by removing it from the mouth with a key, by simple lifting, and by temporarily blocking the unoccupied orifice, or, possibly, by driving it in sufficiently by screwing.

De manière avantageuse, l'anneau est appliqué élastiquement contre le filetage interne de la semelle, ceci en vue de réduire le jeu entre la rehausse et l'anneau susceptible de créer du bruit par entrechoquement sous l'effet des vibrations auxquelles peut être soumise la bouche à clé. A cet effet, on a représenté à la figure 3 une variante de réalisation de l'invention qui permet d'atteindre ce but.Advantageously, the ring is applied elastically against the internal thread of the sole, this in order to reduce the clearance between the riser and the ring capable of creating noise by knocking under the effect of the vibrations to which the keyhole can be subjected. To this end, there is shown in Figure 3 an alternative embodiment of the invention which achieves this goal.

Dans ce mode de réalisation, on a disposé des saillies axiales 42 sur le cylindre 28 de petit diamètre extérieur. Ces saillies ont une épaisseur décroissante vers le bas de la rehausse, en considérant la figure 3, et coopèrent avec le contour interne de l'anneau 22 de façon à légèrement le déformer élastiquement, permettant ainsi d'adapter le contour externe dudit anneau 22 au filetage interne 24 de la semelle 12.In this embodiment, axial projections 42 have been placed on the cylinder 28 of small outside diameter. These projections have a decreasing thickness towards the bottom of the extension, considering FIG. 3, and cooperate with the internal contour of the ring 22 so as to slightly deform it elastically, thus making it possible to adapt the external contour of said ring 22 to the internal thread 24 of sole 12.

Le montage de la rehausse dans l'anneau se faisant sans pièce supplémentaire, en utilisant des moyens complémentaires d'appui et de support et des moyens complémentaires de solidarisation en rotation, l'enlèvement et la remise en place de la rehausse est très simple. De même, le jeu ménagé entre la nervure de solidarisation en rotation et les extrémités de l'anneau facilite le démontage et le montage de la rehausse. La rampe hélicoïdale à devers transversal et la surface externe du cylindre de petit diamètre extérieur constituent des moyens complémentaires efficaces de centrage de la rehausse dans l'anneau.The mounting of the extension in the ring being done without additional part, using additional means of support and support and complementary means of securing in rotation, the removal and the replacement of the extension is very simple. Likewise, the clearance provided between the rotational securing rib and the ends of the ring facilitates disassembly and assembly of the riser. The helical ramp with transverse slope and the external surface of the cylinder of small external diameter constitute effective complementary means of centering the extension in the ring.

La butée de fin de course du filetage de la semelle permet de limiter le déplacement de l'anneau en hauteur et d'éviter l'endommagement du joint d'étanchéité par écrasement contre l'anneau.The end stop of the threading of the sole makes it possible to limit the displacement of the ring in height and to avoid damage to the seal by crushing against the ring.

Dans le cas où l'on dispose des nouvelles couches de revêtement d'épaisseur importante sur la chaussée et où l'augmentation de la hauteur de la bouche à clé est limitée par la butée de fin de course, il suffit d'enlever par soulèvement la rehausse devenue trop petite et de la remplacer par une rehausse de hauteur plus importante.In the case where there are new layers of coating of significant thickness on the roadway and where the increase in the height of the keyhole is limited by the end stop, it suffices to remove by lifting the riser has become too small and replace it with a higher height.

La surface externe du cylindre supérieur de la rehausse étant lisse, celle-ci ne s'accroche pas dans le sol dans lequel elle est placée, ce gui facilite le réglage en hauteur de la rehausse. Par ailleurs, le joint annulaire assure une étanchéité fiable entre la semelle fixe et la rehausse mobile.The external surface of the upper cylinder of the riser being smooth, it does not catch on the ground in which it is placed, this mistletoe facilitates the height adjustment of the riser. Furthermore, the annular seal provides a reliable seal between the fixed base and the mobile riser.

Claims (13)

  1. Height-adjustable key-operated service box of the type comprising a sole plate (12) and an extension piece (14) which are telescopic, characterized in that the lower part of the extension piece (14) is inserted by a downwards vertical translation into an annular member (22) located inside the sole plate (12) and in screw-type interaction with this sole plate, the extension piece (14) and the annular member (22) including complementary means (32, 22A, 22B) for securing in terms of rotation and complementary means (30) for bearing and for supporting the extension piece, which means are arranged respectively on the extension piece and on the annular member and interact with one another under the effect of the weight of the extension piece.
  2. Key-operated service box according to Claim 1, characterized in that the annular member comprises a helical ring (22) with a circular transverse section, interacting with an internal screw thread (24) of the sole plate (12) and extending over at least one turn of the screw thread.
  3. Key-operated service box according to Claim 2, characterized in that the helical ring (22) is applied elastically against the internal screw thread (24) of the sole plate (12).
  4. Key-operated service box according to Claim 2 or 3, characterized in that the extension piece (14) comprises two coaxial cylinders (26, 28) of different outside diameters and the bearing means of the extension piece comprise a helical surface (30) connecting the external surfaces of the two cylinders (26, 28), interacting with the surface of the ring (22).
  5. Key-operated service box according to Claim 4, characterized in that the helical surface (30) and the cylinder (28) of small outside diameter form means for centring the extension piece (14) with respect to the ring (22).
  6. Key-operated service box according to Claim 4 or 5, characterized in that the helical surface forms a helical ramp (30) with a transverse slant.
  7. Key-operated service box according to any one of Claims 4 to 6, characterized in that the cylinder (28) of small outside diameter of the extension piece (14) comprises axial projections (42) with a radial thickness which decreases towards the free end of this cylinder.
  8. Key-operated service box according to any one of Claims 2 to 7, characterized in that the means for securing the extension piece (14) and the helical ring (22) in terms of rotation comprise an axial rib (32) secured to the extension piece the lateral faces (32A, 32B) of which interact with the faces (22A, 22B) forming the ends of the helical ring.
  9. Key-operated service box according to Claim 8, characterized in that the width of the rib (32) of the extension piece is less than the width of the free sector between the end faces (22A, 22B) of the ring (22) so that the lateral faces (32A, 32B) of the rib interact, with play, with the end faces (22A, 22B) of the ring.
  10. Key-operated service box according to any one of Claims 2 to 9, characterized in that the helical ring (22) is securely fastened to the extension piece (14) via a projecting stop on one and/or other of the lateral faces (32A, 32B) of the rib (32) of the extension piece.
  11. Key-operated service box according to any one of Claims 1 to 10, characterized in that the external surface of that part of the extension piece (14) which projects out of the sole plate (12) is smooth.
  12. Key-operated service box according to any one of Claims 1 to 11, characterized in that it comprises an annular seal (40) borne by that end of the sole plate (12) through which the extension piece (14) passes, interacting with the external surface of the latter.
  13. Key-operated service box according to any one of Claims 1 to 12, characterized in that the sole plate (12) includes means (38) for limiting the travel of the annular member (22), at least upwards.
EP92470033A 1991-12-04 1992-12-03 Height-adjustable hydrant Expired - Lifetime EP0545840B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9115024 1991-12-04
FR9115024A FR2684703B1 (en) 1991-12-04 1991-12-04 HEIGHT ADJUSTABLE MOUTH

Publications (2)

Publication Number Publication Date
EP0545840A1 EP0545840A1 (en) 1993-06-09
EP0545840B1 true EP0545840B1 (en) 1995-09-27

Family

ID=9419661

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92470033A Expired - Lifetime EP0545840B1 (en) 1991-12-04 1992-12-03 Height-adjustable hydrant

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EP (1) EP0545840B1 (en)
AT (1) ATE128504T1 (en)
DE (1) DE69205126T2 (en)
DK (1) DK0545840T3 (en)
ES (1) ES2072234T3 (en)
FI (1) FI97250C (en)
FR (1) FR2684703B1 (en)
GR (1) GR3017542T3 (en)
NO (1) NO924659L (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD828401S1 (en) 2017-02-10 2018-09-11 John Albert Leggett Well pump

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2719168B1 (en) * 1994-04-22 1996-06-14 Seifel Sa Buried box intended to contain organs for connecting an installation to a distribution network.
AT512501B1 (en) * 2012-03-15 2013-09-15 E Hawle Armaturenwerke Gmbh Installation kit and method for its production
CA2957858C (en) 2017-02-10 2024-05-14 John Albert Leggett Hydrant assembly

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1485047A (en) * 1920-01-28 1924-02-26 Adolph Mueller Service box
BE762173A (en) * 1968-04-12 1971-07-01 Pancol Marc ADJUSTABLE KEY MOUTH
US3951441A (en) * 1973-06-25 1976-04-20 Josam Manufacturing Co. Adjustable plumbing fitting

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD828401S1 (en) 2017-02-10 2018-09-11 John Albert Leggett Well pump

Also Published As

Publication number Publication date
ATE128504T1 (en) 1995-10-15
FR2684703B1 (en) 1994-02-04
FR2684703A1 (en) 1993-06-11
FI97250B (en) 1996-07-31
GR3017542T3 (en) 1995-12-31
FI925502A (en) 1993-06-05
EP0545840A1 (en) 1993-06-09
ES2072234T1 (en) 1995-07-16
NO924659D0 (en) 1992-12-03
NO924659L (en) 1993-06-07
DE69205126D1 (en) 1995-11-02
ES2072234T3 (en) 1996-01-01
FI925502A0 (en) 1992-12-03
DE69205126T2 (en) 1996-02-29
DK0545840T3 (en) 1996-02-05
FI97250C (en) 1996-11-11

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