FR2521188A2 - Self closing and aligning manhole cover - has automatic lock with lock points on retaining lug surfaces on lid - Google Patents

Self closing and aligning manhole cover - has automatic lock with lock points on retaining lug surfaces on lid Download PDF

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Publication number
FR2521188A2
FR2521188A2 FR8201931A FR8201931A FR2521188A2 FR 2521188 A2 FR2521188 A2 FR 2521188A2 FR 8201931 A FR8201931 A FR 8201931A FR 8201931 A FR8201931 A FR 8201931A FR 2521188 A2 FR2521188 A2 FR 2521188A2
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France
Prior art keywords
slope
frame
locking
counter
fallout
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
FR8201931A
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French (fr)
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FR2521188B2 (en
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.)
Pont a Mousson SA
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Pont a Mousson 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
Priority claimed from FR8119608A external-priority patent/FR2514799A1/en
Application filed by Pont a Mousson SA filed Critical Pont a Mousson SA
Priority to FR8201931A priority Critical patent/FR2521188A2/en
Publication of FR2521188A2 publication Critical patent/FR2521188A2/en
Application granted granted Critical
Publication of FR2521188B2 publication Critical patent/FR2521188B2/fr
Granted legal-status Critical Current

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Classifications

    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D29/00Independent underground or underwater structures; Retaining walls
    • E02D29/12Manhole shafts; Other inspection or access chambers; Accessories therefor
    • E02D29/14Covers for manholes or the like; Frames for covers
    • E02D29/1427Locking devices

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

Abstract

The frame has a central circular opening with three 120 degree spaced housings in its internal edge, to take the peripheral tenons (5) of a removable circular groove. The housings have an engaging ramp (10) and a locking counter slope (25) inclined towards the base. The interior face (12) of each tenon has a lug (13), sliding on the ramp and bearing on the counter slope. The lug is spherical and has, from the interior face of the tenon, a cylindrical shape, ending hemispherically, and extending upwards by a spherical mitre on the side facing the counterslope.

Description

La présente addition concerne un perfectionnement à un regard à tampon auto-fermeur à centrage et verrouillage automatiques, plus spécialement destiné à l'équipement des chaussées. The present addition relates to an improvement to a self-closing manhole cover with automatic centering and locking, more specifically intended for pavement equipment.

Un tel système, décrit dans le brevet principal comporte un cadre pourvu d'un ouverture centrale circulaire et de trois logements espacés de 1200ménagés dans la bordure interne du cadre, et un tampon de fermeture amovible de forme circulaire, muni de trois tenons périphériques également espacés de 1200 et destinés à Btre engagés, en position de service, dans lesdits logements comportant notamment une rampe d'engagement et une contre-pente de verrouillage inclinée vers le fond du logement.La face inférieure de chaque tenon est munie d'une retombée destinée à glisser sur ladite rampe d'engagement lors de la mise en place du tampon sur le cadre et à venir en appui ponctuel, en position de verrouillage, contre ladite contre-pente
Ce système permet d'obtenir une stabilisation parfaite du tampon en position verrouillée, du fait notamment des appuis ponctuels obtenus entre chaque retombée et les contre-pentes de verrouillage correspondantes.
Such a system, described in the main patent, comprises a frame provided with a circular central opening and three housings spaced at 1200 m arranged in the internal border of the frame, and a removable closing pad of circular shape, provided with three peripheral studs also spaced of 1200 and intended for Btre engaged, in the service position, in said housing comprising in particular an engagement ramp and a locking down slope inclined towards the bottom of the housing. The underside of each tenon is provided with a drop intended to slide on said engagement ramp when the buffer is placed on the frame and to come into point contact, in the locked position, against said counter-slope
This system makes it possible to obtain perfect stabilization of the buffer in the locked position, in particular because of the point supports obtained between each fall and the corresponding locking counter-slopes.

Le perfectionnement de ce système, selon la présente addition, a notamment pour but d'inscrire sur une m8me surface sphérique les points d'assise et de verrouillage de chaque retombée, ce qui permet de faciliter la réalisée tion et d'améliorer le fonctionnement du regard. The improvement of this system, according to the present addition, is in particular for the purpose of inscribing on a same spherical surface the seating and locking points of each fallout, which makes it possible to facilitate the realization and improve the operation of the look.

Ce but est atteint, selon la présente addition, par un regard à tampon auto-fermeur à centrage et verrouillage automatiques,plus spécialement destiné à l'équipement des chaussées, selon au moins la revendication 1 du brevet principal, caractérisé en ce que la retombée présente une forme généralement sphérique. This object is achieved, according to the present addition, by a self-closing manhole cover with automatic centering and locking, more especially intended for pavement equipment, according to at least claim 1 of the main patent, characterized in that the fallout has a generally spherical shape.

Selon une autre caractéristique de l'addition, la retombée précitée présente, à partir de la face inférieure du tenon, une forme sensiblement cylindrique se terminant en forme générale d'hémisphère se prolongeant, vers le haut du cOté orienté vers la contre-pente de verrouillage précitée d'un onglet sphérique. According to another characteristic of the addition, the aforementioned fallout has, from the underside of the tenon, a substantially cylindrical shape ending in the general shape of a hemisphere extending, upwards from the side oriented towards the counter-slope of Above-mentioned locking of a spherical tab.

Selon encore d'autres caractéristiques de l'invention, la retombée précitée est réalisée en une seule pièce et présente un évidement interne de forme généralement cylindrique. According to yet other characteristics of the invention, the aforementioned fallout is produced in a single piece and has an internal recess of generally cylindrical shape.

L'addition sera mieux comprise et d'autres buts, caractéristiques, détails et avantages de celleciapparat- tront plus clairement au cours de la description explicative qui va suivre faite en référence aux dessins schématiques annexés donnés uniquement à titre exemple illustrant un mode de réalisation actuellement préféré de l'addition, et dans lesquels
- la figure 1 est une vue en plan du regard selon l'addition, regard dont le tampon amovible est représenté en position verrouillée;
- la figure 2 est une vue en plan d'un logement du cadre où l'on a représenté, en traits interrompus, un tenon et sa retombée , selon l'addition, en position de verrouillage;
- la figure 3 est une vue en coupe selon la ligne
III-III de la figure 2;
- la figure 4 est une vue en coupe selon la ligne
IV-IV de la figure 2.
The addition will be better understood and other objects, characteristics, details and advantages of this will appear more clearly during the explanatory description which follows, made with reference to the appended schematic drawings given solely by way of example illustrating an embodiment currently in use. favorite of the addition, and in which
- Figure 1 is a plan view of the manhole according to the addition, manhole whose removable pad is shown in the locked position;
- Figure 2 is a plan view of a housing of the frame where there is shown, in broken lines, a stud and its fall, according to the addition, in the locked position;
- Figure 3 is a sectional view along the line
III-III of Figure 2;
- Figure 4 is a sectional view along the line
IV-IV of figure 2.

Il est décrit en détail dans le brevet principal, un regard I à tampon auto-fermeur à centrage et verrouillage automatiques comprenant un cadre 2 pourvu d'une ouverture centrale circulaire et de trois logements 3 espacés de 1200 et ménagés dans la bordure interne du cadre 2, et un tampon 4 de fermeture amovible, de forme circulaire, muni de trois tenons 5 périphériques également espacésde 1200 et destinés à entre engagés, en position de service, dans les logements 3. It is described in detail in the main patent, a manhole I with self-closing buffer with automatic centering and locking comprising a frame 2 provided with a circular central opening and three housings 3 spaced 1200 apart and formed in the internal border of the frame 2, and a removable closure pad 4, of circular shape, provided with three peripheral pins 5 also spaced from 1200 and intended for between engaged, in the service position, in the housings 3.

Chaque logement 3 comporte des parois périphériques externe. 6 et interne 7 , des parois latérales 8a , 8b , par exemple verticales, un fond 9, une rampe d'engagement 10 et une contre-pente 25 de verrouillage et de centrage dont la surface 25a est inclinée vers le fond des logements. Each housing 3 has external peripheral walls. 6 and internal 7, side walls 8a, 8b, for example vertical, a bottom 9, an engagement ramp 10 and a counter-slope 25 for locking and centering, the surface 25a of which is inclined towards the bottom of the housings.

La face inférieure 12 de chaque tenon 5 est munie d'une retombée 13 destinée à glisxs sur la rampe d'engagés ment 10 lors de la mise en place du tampon sur le cadre et à venir en appui ponctuel, en position de verrouillage, contre la contre-pente de verrouillage 25. The lower face 12 of each tenon 5 is provided with a drop 13 intended for glisxs on the engagement ramp ment 10 when the pad is placed on the frame and to come into punctual support, in the locked position, against the locking counter-slope 25.

Selon l'invention, la retombée 13 présente une forme généralement sphérique. Ainsi, la retombée 13 a des points d'assise sur la rampe d'engagement 10 et de verrouillage sur la contre-pente 25 qui sont situés sur une méme surface sphérique. According to the invention, the fallout 13 has a generally spherical shape. Thus, the fallout 13 has sitting points on the engagement ramp 10 and locking on the counter-slope 25 which are located on the same spherical surface.

En se référant en particulier à la figure 4, la retombée 13, présente à-partir de la face inférieure 12 du tenon 5, une forme sensiblement cylindrique (de préférence ce légèrement évasée vers ladite surface inférieure du tenon) se terminant en forme générale d'hémisphère se prolongeant vers le haut, du côté orienté vers la contre-pente deverrouillage 25 parun onglet sphérique à la surface duquel se situe le point de verrouillage ou point d'appui contre ladite cohtre-pente.  Referring in particular to FIG. 4, the drop 13, presents from the lower face 12 of the post 5, a substantially cylindrical shape (preferably this slightly flared towards said lower surface of the post) ending in general shape d hemisphere extending upwards, on the side oriented towards the unlocking counter-slope 25 by a spherical tab at the surface of which is located the locking point or point of support against said coher-slope.

De préférence, la retombée 13 est réalisée en une seule pièce et présente un évidement interne 27 de forme généralement cylindrique, une patte 29 reliant celleci à une nervure circulaire 28 prévue sur la surface inférieure du tampon. Preferably, the drop 13 is made in one piece and has an internal recess 27 of generally cylindrical shape, a tab 29 connecting this to a circular rib 28 provided on the lower surface of the tampon.

En outre, la rampe d t engagement 10 est de préférence réalisée sous forme d'une plaque présentant une inclinaison d'environ 300 par rapport à l'horizontale. L'extrémité supérieure de la rampe 10 s'appuie sur l'une des parois latérales, par exemple de la paroi tandis que son extrémité inférieure s'appuie sur le fond 9 du logement. En se référant en particulier à la figure 2, la contre-pente de verrouillage 25 est située dans l'angle gauche, en regardant vers l'extérieur, du logement, ctestà-dire entre sensiblement le milieu de la paroi interne 7 du logement et le milieu de la paroi latérale Bb adjacente. Un évidement 26 est .ménagé entre la face inférieure 25b de la contre-pente 25 et le fond 9 du logement.La surface de verrouillage 25a de la contrepente 25 est de préférence plane et inclinée d'environ 150 par rapport à un plan parallèle à l'axe central vertical du cadre 2. Avantageusement l'arête du dièdre formé par la surface de verrouillage 25a et la surface supérieure 25c de la contre-pente 25, et la corde de l'arc de cercle définissant l'arête supérieure interne du logement 3 formant un angle égal à environ 300.  In addition, the engagement ramp 10 is preferably made in the form of a plate having an inclination of approximately 300 relative to the horizontal. The upper end of the ramp 10 is supported on one of the side walls, for example of the wall while its lower end is supported on the bottom 9 of the housing. With particular reference to FIG. 2, the locking counter-slope 25 is situated in the left angle, looking outwards, of the housing, that is to say between substantially the middle of the internal wall 7 of the housing and the middle of the adjacent side wall Bb. A recess 26 is arranged between the lower face 25b of the counter-slope 25 and the bottom 9 of the housing. The locking surface 25a of the counter-slope 25 is preferably planar and inclined by about 150 relative to a plane parallel to The vertical central axis of the frame 2. Advantageously the edge of the dihedral formed by the locking surface 25a and the upper surface 25c of the counter-slope 25, and the chord of the arc of a circle defining the internal upper edge of the housing 3 forming an angle equal to approximately 300.

En se référant en particulier aux figures 2 et 3, pour faciliter l'extraction du tampon, la rampe d'engagement présente à sa partie supérieure un palier 10a sensiblement horizontal, la paroi interne 7 du logement 3 correspondant présentant, à sa partie supérieure, en regard du palier 10a une éc ancrure 20, en face d'une ouverture 21, de préféren- ce rectangulaire, prévue dans le tenon 5 correspondant pour le passage d'un outil d'extraction du tampon.  With particular reference to FIGS. 2 and 3, to facilitate the extraction of the tampon, the engagement ramp has at its upper part a substantially horizontal bearing 10a, the internal wall 7 of the corresponding housing 3 having, at its upper part, opposite the bearing 10a, an anchor 20, opposite an opening 21, preferably rectangular, provided in the corresponding pin 5 for the passage of a tampon extraction tool.

Claims (4)

REVENDICATIONS 1. Regard à tampon auto-fermeur à centrage et verrouillage automatiques destiné en particulier à l'qui pement des chaussées, selon au moins la revendication 1 du brevet principal, du type comportant un cadre(2)pourvu d'une ouverture centrale circulaire et de trois logements (3) espacés de 1200 ménagés dans la bordure interne du cadre(2), et un tampon (4) de fermeture amovible de forme circulaire, muni de trois tenons(5) périphériques également espacés de 1200 et destinés à être engagés, en position de service, dans lesdits logements comportant une rampe d'engagement (10) et une contre-pente de verrouillage (25) inclinée vers le fond du logement, la face inférieure(12) de chaque tenon (5) étant munie d'un retombée (13) destinée à glisser sur ladite rampe d'engagement (10) lors de la mise en place du tampon sur le cadre , et à venir en appui ponctuel, en position de verrouillage, contre ladite contrepente (25), caractérisé en ce que ladite retombée (13) présente une forme généralement sphérique. 1. Self-closing manhole cover with automatic centering and locking intended in particular for the carriage of pavements, according to at least claim 1 of the main patent, of the type comprising a frame (2) provided with a circular central opening and three housings (3) spaced by 1200 formed in the internal border of the frame (2), and a removable closure pad (4) of circular shape, provided with three peripheral lugs (5) also spaced by 1200 and intended to be engaged , in the service position, in said housings comprising an engagement ramp (10) and a locking counter-slope (25) inclined towards the bottom of the housing, the lower face (12) of each tenon (5) being provided with '' a fallout (13) intended to slide on said engagement ramp (10) when the pad is placed on the frame, and to come into point contact, in the locked position, against said counter-slope (25), characterized in that said fallout (13) has a shape generally s spherical. 2. Regard selon la revendication 1, caractérisé en ce que la retombée (13) précitée présente, à partir de la face inférieure (12) du tenon (5),une forme sensiblement cylindrique se terminant en forme générale d'hémisphère se prolongeant, vers le haut, du côté orienté vers la contrepente de verrouillage (25) précitée par un onglet sphérique. 2. Manhole according to claim 1, characterized in that the aforementioned dropout (13) has, from the underside (12) of the post (5), a substantially cylindrical shape ending in the general shape of a hemisphere extending, upwards, on the side facing the locking counter-slope (25) mentioned above by a spherical tab. 3. Regard selon la revendication 1 ou 2, caractérisé en ce que la retombée (13) précitée est réalisée en une seule pièce. 3. Manhole according to claim 1 or 2, characterized in that the fallout (13) above is made in one piece. 4. Regard selon l'une des revendications 1 à 3, caractérisé en ce que la retombée (13) précitée présente un évidement interne (27) de forme généralement cylindrique.  4. Manhole according to one of claims 1 to 3, characterized in that the drop (13) above has an internal recess (27) of generally cylindrical shape.
FR8201931A 1981-10-19 1982-02-05 Self closing and aligning manhole cover - has automatic lock with lock points on retaining lug surfaces on lid Granted FR2521188A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8201931A FR2521188A2 (en) 1981-10-19 1982-02-05 Self closing and aligning manhole cover - has automatic lock with lock points on retaining lug surfaces on lid

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8119608A FR2514799A1 (en) 1981-10-19 1981-10-19 Self closing manhole cover - has automatic centring and locking with cover spur locking behind frame engagement ramp
FR8201931A FR2521188A2 (en) 1981-10-19 1982-02-05 Self closing and aligning manhole cover - has automatic lock with lock points on retaining lug surfaces on lid

Publications (2)

Publication Number Publication Date
FR2521188A2 true FR2521188A2 (en) 1983-08-12
FR2521188B2 FR2521188B2 (en) 1984-05-11

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Family Applications (1)

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FR8201931A Granted FR2521188A2 (en) 1981-10-19 1982-02-05 Self closing and aligning manhole cover - has automatic lock with lock points on retaining lug surfaces on lid

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR774918A (en) * 1934-06-25 1934-12-17 Manhole cover
FR1249110A (en) * 1959-02-25 1960-12-23 Passavant Werke Road frame consisting of a frame and a cover or a folding grid

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR774918A (en) * 1934-06-25 1934-12-17 Manhole cover
FR1249110A (en) * 1959-02-25 1960-12-23 Passavant Werke Road frame consisting of a frame and a cover or a folding grid

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FR2521188B2 (en) 1984-05-11

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