EP2893087A1

EP2893087A1 - Manhole

Info

Publication number: EP2893087A1
Application number: EP13774721.8A
Authority: EP
Inventors: Bertrand VINET
Original assignee: EJ Emea SAS
Current assignee: EJ Emea SAS
Priority date: 2012-09-05
Filing date: 2013-09-04
Publication date: 2015-07-15
Also published as: CN104603368B; WO2014037669A1; FR2994985A1; FR2994985B1; CN104603368A

Abstract

The present invention concerns a manhole having anti-tilt means of a crown member relative to the frame two which it is hinged. According to the invention, the manhole is characterised in that the housing (11) of the lug (12) and the hinge head (9) comprise form-fitting means (18, 19), for example such as a slot (18) of the head (9) and at least one protruding portion (19) secured in the housing (11) of the lug (12) and engaging to prevent the head (9) from tilting out of the housing (11) of the lug (12) when the crown member (5) is in the upright position of same. The invention is applicable in the field of road equipment.

Description

LOOK OF PUTTING

The present invention relates generally to manholes.

A known manhole as partially shown in FIGS. 1 to 3 comprises a frame 1 intended to be sealed in the roadway and comprising a peripheral wall 2 delimiting an internal opening for access to a manhole made in the roadway and an element 3, such as a cover or pad or a grid, connected to the peripheral wall 2 of the frame 1 via a hinge device 4.

The articulation device 4 allows the cap member 3 to pivot between a frame closure position 1 shown in FIG. 1 and an open position of this frame to which the cap element 3 is erected approximately vertically or inclined outwardly as shown in Figures 2 and 3 to allow an intervening person to access the manhole through the opening of the frame 1.

The hinge device 4 comprises a hinge head constituted in this case by a substantially cylindrical drum 5 secured to the cap element 3 externally to the latter by means of a pin 6.

The drum 5 is recessed and releasably limited rotation in a housing arranged in an ear 7 secured to the peripheral wall 2 of the frame 1 outside of this wall.

When the frame 1 and the cap member 3 have a generally circular shape, the lug 7 projects radially from the annular peripheral wall 2 of the frame 1 to the outside thereof and the barrel assembly 5 and tenon 6 in a T configuration protrudes radially outwardly of the cap member 3 being located in a plane substantially parallel to the upper web 8 of the cap member 3.

Thus, the hinge shaft 5 of the crown element 3 to the frame 1 is freely mounted in the housing of the lug 7, that is to say without using a cylindrical axis of articulation passing through the ear 7 and the barrel 5 for pivotally supporting the latter in the housing of the ear 7.

When the cap element 3 occupies the erect open position of the frame 1 shown in FIG. 2, the cap element 3 can easily rock on one side or the other in its plane containing the veil 8, particularly for a cap member 3 of large size, for example with a diameter of at least 800 mm, and thus a very high weight. Indeed, for a coronation element of large size and relatively high weight, the forces that can be exerted accidentally on the articulation shaft 5 cause a tilting of this shaft in its longitudinal median plane tending to remove the barrel 5 of the housing of the ear 7 as shown in Figure 3 to drop the cap element 3 out of the frame 1, potentially seriously hurt people in the vicinity of this frame.

The present invention aims to overcome the above disadvantage of known manholes.

For this purpose, the invention provides a manhole comprising a cap element, such as a cover or pad, a frame and an articulation device connecting the cap element to the frame and allowing this element to pivot between a frame closing position and an opening position of the frame to which the cap element is erected approximately vertically or inclinedly outwardly, the hinge device comprising a hinge head integral with the cap member, recessed releasably and rotation limited in a housing arranged in an ear of the frame and which is characterized in that the housing of the The ear and the hinge head comprise complementary shape means cooperating to prevent tilting of the head out of the ear housing when the crown member is in its upright position.

Preferably, the form-complementary means comprise at least one slit of the head transverse to a longitudinal direction of the head and separating the latter in two parts axially spaced from one another and at least one projecting part fixed in the housing of the ear, extending perpendicularly to the head and housed in the slot of the head when the cap element is in its upright position to prevent tilting of the head in its longitudinal median plane out of the housing of the ear at this erect position.

Preferably, the head is integral with the crown element by means of a tenon comprising a slot in the extension of the slot of the head and in which also engages the projecting part when the crowning element occupies his position erect.

Advantageously, the head extends in a plane substantially parallel to the web of the crown element.

The ear is secured to the frame outside the latter and is shaped as a yoke and the projecting portion is secured to the bottom of the housing in the yoke and the inner face of the core wall of the yoke.

Preferably, the slot of the head separates the latter into two parts of the same length. The tenon is engaged through the corresponding opening of a peripheral wall of the frame in the closed position of the crown element in the frame and which protrudes outside the ear above it in upright position of the crown element.

Preferably, the cap member and the frame have a generally circular shape and the lug extends radially outside the frame while the T-shaped post and head extend radially from the cap element. .

The invention also relates to a cap member, such as a cover or pad, intended for a manhole, comprising a head secured to the cap member by means of a pin to form part of a device articulating this element to a frame of the manhole and which is characterized in that the head comprises at least one transverse slot separating the head in two equal parts axially spaced from one another and the tenon comprises a slot in the extension of the crack of the head.

The crown member advantageously has a circular shape and the T-shaped tenon and head extend radially from the crown member.

Finally, the invention provides a frame for a manhole comprising a peripheral wall defining an inner opening and an integral ear of the peripheral wall outside thereof, which ear defines an inner housing for receiving a hinge portion a crown element and which is characterized in that the ear comprises at least one projecting portion fixed in the housing of the ear.

Preferably, the ear is shaped as a yoke and the projecting portion is integral with the bottom of the housing of the yoke and the inner face of the core wall of the yoke. 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 an embodiment of the invention. the invention and in which:

Figure 1 is a partial perspective view showing a known manhole where the cap member connected to the frame by a hinge device occupies its closed position of the frame;

Figure 2 is a partial front perspective view according to Figure II of Figure 1 and showing the cap member occupying its normal position of opening the frame;

- Figure 3 is a partial perspective view similar to that of Figure 2 and showing the cap member accidentally tilt out of the frame 1;

Figure 4 is a partial perspective view showing a pavement crown member occupying the closed position of the frame and connected to the frame by a hinge device according to one invention;

Figure 5 is a partial perspective similar to that of Figure 4 and showing the crown member at its upright opening position of the frame;

Figure 6 is a partial perspective view of the cap member provided with its hinge according to the invention;

- Figure 7 is a partial perspective view of the frame provided with the outer lug for housing the hinge shaft of the crown member of Figure 6;

Figure 8 is a partial view from above the manhole whose crown element occupies its closed position of the frame; Figure 9 is a sectional view along the line IX-IX of Figure 8;

Figure 10 is a sectional view along line X-X of Figure 8;

FIG. 11 is a partial view from above of the manhole whose crown element occupies its erected position of opening of the frame;

Figure 12 is a sectional view along the line XII-XII of Figure 11;

- Figure 13 is a sectional view along the line XIII-XIII of Figure 11;

Fig. 14 is a front view showing the crown member at its normal upright position of opening of the frame;

FIG. 15 is a front view similar to that of FIG. 14 and showing the cap element having tilted on one side in its own plane; and

Fig. 16 is a view similar to that of Fig. 14 showing the cap member tilted to the opposite side of Fig. 15 in its own plane.

Referring to Figures 4 to 16, the reference numeral 1 designates a frame of view of pavement, partially shown, having a generally circular shape and can be sealed in the ground.

The frame 1 comprises a sole 2 surmounted by a peripheral annular wall 3 delimiting the internal opening of the frame 1 to access a subterranean visit well. The side wall 3 of the frame 1 is provided with a circular inner flange 4 projecting into the opening of the frame.

The manhole further comprises a cap element 5, such as a cover or pad or a grid, also circular, which is hingedly mounted, by means of a hinge device 6, to the frame 1 so that to occupy a lowered position horizontal closure of the circular opening of the frame 1 shown in particular in Figure 4 or an open position clearing the circular opening of the frame and wherein the cap member 5 is erected or standing at a given angular position relative to the frame to allow an intervening person to access the manhole through the opening of this frame.

As shown in FIGS. 5, 12 and 13, the crown element 5 is inclined at its upright position outside the frame 1 at an angle of about 110 ° to the horizontal, but it can be erected at an approximately vertical position according to the type of articulation connecting the cap element 5 to the frame 1.

The crowning element 5 comprises an upper planar veil 7 and a peripheral rim 8 protruding from the internal face of the veil 7 and able to bear against the base flange 4 of the frame 1 when the crowning element 5 occupies its closed position of the frame 1 as shown in Figures 9 and 10.

The hinge device 6 comprises a hinge head constituted in this embodiment by a substantially cylindrical barrel 9, in this case with a substantially cam-shaped cross section, secured to the crown element 5, preferably by intermediate of a post 10 configuring the barrel assembly 9 and ten tee T. This assembly projects radially outwardly and peripherally of the peripheral edge 8 of the cap element 5 being located substantially in a plane parallel to the plane of the veil 7 of the crowning element 5.

The hinge pin 9 is recessed removably in a housing 11 arranged in a lug 12 integral with the peripheral wall 3 of the frame 1 outside thereof. The lug 12 has the general shape of a clevis with side walls 13 integral with the side wall 3 of the frame 1 substantially perpendicular thereto and core wall 14 connected to the two side walls 13.

The hinge pin 9 is mounted for limited rotation in the housing 11 of the clevis lug 12 between its two open and closed positions of the frame 1.

Indeed, first of all as best shown in Figure 7, the housing 11 of the ear 12 comprises in the vicinity of the two side walls 13 two arcuate segments 15, only one of which is visible, serving as support bearings respectively of the two ends of the hinge shaft 9.

Thus, the hinge shaft 9 is not supported in the housing 11 of the lug 12 by a cylindrical axis of pivoting passing through the side walls 13 of the lug 12 and the shank 9, that is to say that the drum 9 is mounted freely pivoting in the ear 12. In addition, the cap member 5 can be removed from the housing 11 of the ear 12 of the frame 1 when it occupies its upright standing position.

The peripheral wall 3 of the frame 1 has an opening 16 communicating with the housing 11 of the lug 12 and through which the post 10 of the cap element 5 can freely move during pivoting by the articulation shank 9. of the crown element 5 between its two open and closed positions of the frame 1.

The length of the opening 16 along the peripheral wall 3 of the frame is less than the length of the core wall 14 of the lug 12 so that the two lateral edges 3a of the wall 3 delimiting the opening 16 are connected in the upper part to the two side walls 13 of the ear 12 by two upper walls 17 whose upper face is located in the same plane as the upper faces of the walls 13, 14 of the ear 12 delimiting the upper edges of the ear 12.

When the cap member 5 occupies its horizontal position of closure of the frame 1, the two upper walls 17 prevent the withdrawal of the articulation shaft 9 from the housing 11 and the ear 12.

Finally, when the crown element 5 occupies its upright and upset position of the opening of the frame 1 shown in particular in FIG. 12, the tenon bears against the upper edge of the core wall 14 of the ear 12 protruding externally above this ear and the hinge pin 9 is supported at both ends on the two inner faces of the wall portions of the peripheral wall 3 defining the opening 16 and located opposite the two bearing segments 15, thereby blocking the crown member 5 at this upright position.

Although this is shown, the cap member 5 is locked at its closed position of the opening of the frame 1 by a lock located opposite the articulation device 6 and having a bolt engaged under a latch from the frame 1.

According to the invention, the hinge pin 9 comprises a slot 18 made transversely to the longitudinal axis of the barrel which is thus separated into two parts 9a axially spaced from each other and of the same length and the ear 12 comprises a protruding portion constituted in this case by a gusset 19 fixed in the housing 11 of this ear in a plane perpendicular to the core wall 14 of the ear 12. The gusset 19, which can come from casting with the frame 1 is integral with the bottom of the housing 11 of the left ear 12 and the inner face of the core wall 14 of this ear. In addition, the gusset 19 extends perpendicularly to the articulation shaft 9 and is housed or engaged in the slot 18 of this shaft when the crown element 5 occupies the position of closing or opening the frame 1.

The pin 10 also comprises a slot 20 extending in the extension of the slot 18 of the hinge pin 9, the slots 18 and 20 forming in fact one and the same slot. When the crown element 5 occupies its horizontal position of closure of the frame 1, the gusset 19 is dimensioned so as not to engage in the slot 20 the post 10, but when the crown element 5 occupies its upright position, the gusset 19 is not only engaged in the slot 18 of the articulation shaft 9 but also in the slot 20 of the post 10.

The presence of the gusset 19 and the slots 18, 20 of the articulation shaft 9 and the pin 10 does not cause any gene during the pivoting of the crown element 5 between its two open and closed positions of the frame 1.

Referring more particularly to FIGS. 14 to 16, FIG. 14 shows the crown member 5 at its normal upright position of opening of the frame 1 and to which the gusset 19 is housed in the two slots 18, 1 of the barrel. articulation 9 and tenon 10.

Given the relatively large dimensions of the cap element 5 which can have a diameter of at least 800 mm, and therefore the relatively high weight of this element, the latter can easily accidentally tilt in its plane containing the veil. for various reasons, for example when subjected to a relatively strong wind.

Figures 15 and 16 show the clockwise and counterclockwise tilting of the crown element 5 symbolized by Figures F1 and F2 and which is counteracted by the gusset 19 housed in the slots 18, 20 of the articulation shaft 9 and the tenon 10. Indeed, when tilting the crown member 5 along the arrow Fl or F2, the hinge pin 9 tends to rock out of the housing 11 in its longitudinal median plane to the position shown in FIG. 15 or 16, at which the tilting is prevented or stopped by the gusset 19 on the two opposite sides of which the diagonally opposite parts rest against each other; parallel faces delimiting the slots 18, 20, thereby preventing the barrel from coming out of the housing 11.

Alternatively, the hinge pin 9 may not be integral with the cap member 5 through the pin 10, but to be integral directly to this element by arranging the ear 12 in the frame 1, c that is to say by securing it to the inner face of the peripheral wall 9 of the frame 1. In addition, the slot 18 of the hinge pin 9 can be made to separate the barrel 9 into two parts 9a of lengths different.

Furthermore, the means for t tilting the crown member 5 relative to the frame 1 could include two gussets 19 fixed in the housing 11 of the lug ear 12 being arranged symmetrically to the median plane of the wall forming core 14 of the lug 12 and perpendicular to this wall and which respectively cooperate with two parallel slots of the hinge shaft 9 extending transversely thereto, the two parallel slots of the lug 10 extending the two slots of the barrel 9 so that the two gussets are engaged in these slots at the upright position of the cap member 5 to prevent accidental tilting out of the frame 1.

The hinge device of the invention thus effectively prevents tilting of the cap element in its own plane outside the frame 1 and without hindering the normal pivoting of the cap element between its two open positions. and closing the frame 1.

The invention has been described in application to a frame look and crown element circular, but it is also understood that it may be applied to a rectangular-looking manhole and rectangular (s) or triangular crown (s) element (s) hinged (s) to the frame so removable, that is to say without being mounted (s) pivoting on a cylindrical retaining axis.

In addition, the hinge head may take any form other than that of a substantially cylindrical barrel. For example, the hinge head may have a shape as described and shown in French patent FR 2 758 836 and which extends in a longitudinal direction perpendicular to a radial pin connecting the head to the circular buffer. This head has an arcuate face allowing it to pivot in the manner of a ball in the housing specially arranged in the frame. Of course, according to this embodiment, the hinge head is housed removably in the lug of the cover and has the transverse slot cooperating with the projecting portion to prevent tilting in its longitudinal median plane of the head and, therefore, buffer in its own plane, as described in the previous embodiment with hinge pin.

Claims

A manhole cover comprising a cap element (5), such as a cover or pad, a frame

(1) and a hinge device (6) connecting the cap element (5) to the frame (1) and allowing this element to pivot between a closed position of the frame (1) and an open position of the frame (1) to which the cap element (5) is erected approximately vertically or inclined outwards, the hinge device (6) comprising a hinge head (9) integral with the crown (5), recessed and rotationally limited in a housing (11) arranged in an ear (12) of the frame (1), characterized in that the housing (11) of the ear (12) and the head of articulation (9) comprise form-matching means (18, 19) cooperating to prevent tilting of the head (9) from the housing (11) of the ear (12) when the crowning element (5) occupying his erect position is subject to constraints urging him to switch to his own plan.

2. A manhole according to claim 1, characterized in that the complementary shape means comprise at least one slot (18) of the head (9), transverse to a longitudinal direction of the head (9) and separating the latter in two parts (9a) axially spaced from each other and at least one projection (19) fixed in the housing (11) of the ear (12) extending perpendicularly to the head (9) and accommodated in the slot (18) of the head (9) when the cap member (5) is in its upright position to prevent tilting of the head (9) in its longitudinal median plane out of the housing of the ear (12). ) at this erect position.

3. A manhole according to claim 2, characterized in that the head (9) is integral with the cap element (5) via a pin (10) comprising a slot (20) in the extension the slot (18) of the head (9) and in which the projecting part (19) also engages when the cap element (5) is in its upright position.

4. A manhole according to one of the preceding claims, characterized in that the head (9) extends in a plane substantially parallel to the web (7) of the cap element (5).

5. A manhole according to one of claims 2 to 4, characterized in that the lug (12) is integral with the frame (1) outside the latter and is shaped as a yoke and in that the part protruding (19) is secured to the bottom of the housing (11) in the yoke and the inner face of the core wall (14) of the yoke.

6. A manhole according to one of claims 2 to 5, characterized in that the slot (18) of the head (9) separates the latter into two parts (9a) of the same length.

7. A manhole according to one of claims 3 to 6, characterized in that the pin (10) is engaged through a corresponding opening (16) of a peripheral wall (3) of the frame (1). position of closure of the crown element (5) in the frame (1) and which protrudes out of the ear (12) above it in the erected position of the crown element ( 5).

8. A manhole according to one of claims 3 to 7, characterized in that the crown element (5) and the frame (1) have a generally circular shape and the lug (12) extends radially to the outside of the frame (1) while the tenon (10) and the T-shaped head (9) extend radially from the cap element (5).

9. A manhole according to one of claims 2 to 8, characterized in that the head (9) is a substantially cylindrical barrel and the projecting portion (19) is a gusset.

10. A crowning element, such as a cover or pad, intended for a manhole, comprising a head (9) secured to the cap element (5) by means of a pin (10) for part of an articulation device of this element to a frame (1) of the manhole, characterized in that the head (9) comprises at least one transverse slot (18) separating the head (9) in two equal parts (9a) axially spaced from each other and the tenon (10) comprises at least one slot (20) in the extension of the slot (18) of the head (9).

11. Coronation element according to claim 10, characterized in that it has a circular shape and the tenon (10) and the head (9) T-shaped extend radially from the cap element (5).

12. Frame for a manhole comprising a peripheral wall (3) defining an inner opening and an lug (12) integral with the peripheral wall (3) outside the latter, which lug (12) delimits an inner housing (11) for receiving a hinge portion (9) of a cap member (5), characterized in that the lug (12) comprises a projecting portion (19) fixed in the housing (11) of the ear (12).

13. Frame according to claim 12, characterized in that the lug (12) is shaped as a yoke and in that the projecting portion (19) is integral with the bottom of the housing (11) in the yoke and the inner face of the core wall (14) of the yoke.