EP2563976A2

EP2563976A2 - Highway device

Info

Publication number: EP2563976A2
Application number: EP11723520A
Authority: EP
Inventors: Jean-Claude Royer; Vincent Rotharmel
Original assignee: Saint Gobain PAM SA
Current assignee: Saint Gobain PAM SA
Priority date: 2010-04-29
Filing date: 2011-04-28
Publication date: 2013-03-06
Anticipated expiration: 2031-04-28
Also published as: FR2959519A1; EP2563976B1; ES2625333T3; WO2011135260A2; WO2011135260A3; FR2959519B1; US20130097933A1; RU2012151145A; RU2530098C2; PT2563976T; US8869452B2

Abstract

This highway device has a frame (4) that delimits an opening (8), a buffer (6) that has a covering sheet (14) extending along a sheet plane (PV-PV), a first hinge provided with a first cam (24) and a first cam follower (26) which are designed to guide the buffer between a released open position and a closed position, and securing means that prevent the buffer from lifting, in the closed position, in a direction perpendicular to the sheet plane. The securing means have a first securing member (34) and a first counterpart securing member (36). The highway device has a first support bracket (42) attached to the frame (4) and bearing the first cam (24) and the first securing member (34). Application to telecommunications access hatches.

Description

Road system

The present invention relates to a road device, of the type comprising:

- an opening,

a buffer having a covering web extending along a sail plane; a first hinge provided with a first cam and a first counter cam adapted to guide the buffer with respect to the opening between an open position; released and a closed position, and

- Securing means opposing in the closed position to a lifting of the buffer in a direction perpendicular to the sail plane, the securing means comprising a first securing member and a first counter-securing member.

Road devices are known, for example hatches for access to telecom installations, comprising a frame defining an opening and a buffer adapted to close the opening. The pad includes maneuvering recesses in which an operating tool is inserted to place the pad in the frame or to remove the pad from the frame. The operation of the buffer by means of the tool is not easy.

These access hatches also comprise securing means opposing in the closed position to a removal of the frame buffer. The securing means comprise a large number of spare parts and are difficult and expensive to assemble.

The invention aims to overcome these disadvantages and to provide a road device that is easier to assemble and easier to handle.

Another object of the invention is to overcome these disadvantages by allowing retrofitting existing road devices.

For this purpose the invention relates to a road device of the type indicated above, characterized in that the road device comprises a first support bracket carrying the first cam and the first securing member.

According to particular embodiments, the road device comprises one or more of the following characteristics.

- The road device comprises a second hinge adapted to guide the buffer between the released open position and the closed position and provided with a first additional cam and a first additional counter-cam, the securing means comprise a second member of securing and a second counter-securing member, and the road device comprises a second support bracket carrying the first additional cam and the second securing member; - The first cam and the securing member of the or each support bracket are integral with each other, are in particular manufactured in one piece, and are preferably integral with each other ;

the first cam of the or each support bracket comprises a first cam surface and a second cam surface, these two cam surfaces extending on either side of a plane of cam symmetry;

the or each support bracket comprises a first safety surface and a second safety surface extending on either side of a security symmetry plane, and in the case where the device comprises two support brackets, the first securing surfaces of the first and second support consoles are located on the same side of the securing plane of symmetry of the support bracket concerned, and the second securing surfaces of the first and second support consoles are located on the same side of the plane securing symmetry of the support bracket concerned, the first securing member forming the first secure surface of the first support bracket, and the second securing member forming the second securing surface of the second support bracket;

at least the first counter-securing member is formed by a first buffer maneuvering recess and, if appropriate, the second counter-securing member is formed by a second maneuvering recess of the pad;

the or each support bracket comprises a blocking recess adapted to define a blocked open position of the pad, the blocking recess comprising at least one blocking surface adapted to prevent the pad from tilting towards the closed position when the pad is in position; in the open locked position;

- The road device comprises at least one muting element adapted to inhibit or inhibit the passage of the buffer from the released open position to the locked open position;

- The road device comprises a frame defining the opening and a first fixing member adapted to attach the first support bracket to the frame, and if necessary a second fastener adapted to secure the second support bracket to the frame;

the inhibition element comprises the first fixing member, and in particular a spacer; and

- The or each support bracket is made in one piece, including cast iron. The invention will be better understood on reading the description which follows, given solely by way of example and with reference to the appended drawings in which:

- Figure 1 is a sectional view of a road device according to the invention in the closed state;

- Figure 2 is a front view of the road device of Figure 1 in the fully open state;

- Figure 3 is a perspective view of the road device of Figure 1 in the open state blocked;

FIG. 4 and FIG. 5 are sections of the road device according to the invention in the blocked open state, FIG. 4 being a section along the line IV-IV of FIG. 3 through a first hinge and FIG. 5 being a section along the line VV of Figure 3 through a second hinge;

- Figure 6 is a sectional view of the road device along the line VI-VI of Figure 1;

- Figures 7 and 8 are respectively the details VII and VIII of Figure 3 enlarged;

FIG. 9 is detail IX of enlarged FIG. 6;

FIG. 10 shows in perspective a support console,

Figure 11 shows the support bracket of Figure 10 from the side;

- Figure 12 shows the road system in section along the line XII-XII of Figure 6; and

- Figure 13 shows a detail of the road device in perspective and partially torn off.

Figure 1 shows a road device according to the invention, designated by the general reference 2. The road device 2 is for example a manhole or an access hatch to an underground chamber, such as a telecom hatch.

The road device 2 comprises a frame 4 and a buffer 6, made for example of cast iron. The frame 4 defines an opening 8, which is for example an access opening to underground telecommunication facilities or to an underground inspection chamber. The opening 8 extends in a PO-OP opening plane substantially parallel to the ground in the installed state.

The frame 4 comprises a wall flange 10 extending perpendicular to the OP-PO opening plane and a support flange 12 extending parallel to the PO-PO opening plane. The buffer 6 comprises a covering web 14 extending along a PV-PV sail plane, a stiffening structure 16 and four operating recesses 18 (see, for example, FIG. 9).

The road device 2 defines a closed state (FIG. 1), an unlocked open state (FIG. 2), and an open blocked state (FIG. 3). In the closed state the buffer 6 is in a closed position in which it is located in the opening 8 and covers it. In this case the PV-PV plane is parallel to the PO-PO plane. In the open position, the buffer 6 is movable between two open positions, namely a released open position (FIG. 2) and an open open position (FIG. 3). In the released open state, the buffer 6 is in a position in which it is switchable in the direction of closure exclusively around a first axis of articulation AA with respect to the closed state or in which it is possibly shifted radially with respect to this axis AA. In the blocked open state, the tampon is prevented from tilting to its closed position, but is however tiltable about the axis AA in an extreme open position in which the cover veil 14 is displaced by more than 90 ° with respect to its closed position, and is for example tilted by 1 10 °. Also, the buffer 6 can be brought from the open state locked in the open state released by rotation about a blocking axis B-B extending perpendicularly to the axis A-A.

The road device 2 comprises a first hinge 20 and a second hinge 22. The hinges 20, 22 are adapted to guide the buffer 6 between the closed position and the released open position. In the released open position, the PV-PV plane forms an angle of 90 ° or more with respect to the PO-PO plane, compared to the closed position.

The first hinge 20 is provided with a first cam 24, fixed with respect to the opening 8 and in this case with respect to the frame 4, and a first cam 26 fixed with respect to the pad 6 (FIG. ). The second hinge 22 is provided with a first additional cam 24, fixed with respect to the opening 8 and in this case with respect to the frame 4, and a first additional counter-cam 26 fixed with respect to the pad 6 ( Figure 4).

The first cams 24 and the first cams 26 are adapted to guide the pad 6 between the released open position and the closed position. For this purpose, the first counter-cams 26 are applied to the first cams 24 over an angular range of opening of at least 60 °. More precisely, the first cams 24 and first cams 26 apply to each other from an opening angle of 10 ° with respect to the closed position and this up to an opening angle of 90 ° from the closed position. The first cams 26 are formed by an edge of the pad 6.

The first hinge 20 is provided with a second cam 28 (see Figure 1 1), fixed with respect to the opening 8 and in this case with respect to the frame 4, and a second cam follower 30 fixed by compared to buffer 6 (Figure 7). The second hinge 22 is provided with a second additional cam 28, fixed with respect to the opening 8 and in this case with respect to the frame 4, and a second additional counter-cam 30 fixed with respect to the pad 6 ( Figure 4).

The second cams 28 and cams 30 overlap each other over an angular range of the pad 6 from 0 ° or substantially 0 °, ie the closed position, to an opening angle of 90 ⁰ relative to the closed position.

The second cams 30 are formed by a lower surface of the pad 6.

The road device 2 also comprises securing means 32 (see FIGS. 12 and 13). These securing means 32 define in the closed position of the buffer 6 an engaged configuration in which they oppose an uplift of the buffer 6 in a lifting direction R directed perpendicularly to the plane PO-PO by moving the buffer 6 away from the airfoil. 12, when the lifting force is applied to the buffer 6 near the hinges 20, 22.

The securing means 32 define, in the released open position, an unobstructed configuration in which they do not oppose lifting the pad 6 in the lifting direction R, thereby allowing the pad 6 to be removed. More specifically, the securing means 32 define the engaged configuration over an angular range extending from the closed position of the buffer 6 to an opening angle of 15 ° of the buffer 6 relative to the closed position. The securing means 32 define the unobstructed configuration over an angular range extending from the opening angle of 15 ° of the buffer 6 with respect to the closed position and this up to an opening angle of 90.degree. in the closed position. In other words, the security means 32 are active only when the buffer 6 is in an angular position of the buffer between 0 ° and 15 °.

During the switching of the buffer 6 in the closed position, the securing means 32 automatically move from the unobstructed configuration to the engaged configuration and vice versa.

The securing means 32 comprise a first securing member 34, fixed with respect to the opening 8 and in this case with respect to the frame 4, and a first secure counter-member 36 fixed with respect to the pad 6. The means 32 also comprise a second securing member 38, fixed by relative to the opening 8 and in this case with respect to the frame 4, and a second counter-securing member 40, fixed with respect to the pad 6.

The or each securing member 34, 38 comprises a rib extending parallel to the opening plane PO-PO and radially offset from the axis A-A.

The first counter-securing member 36 is in this case formed by a first of the maneuvering recesses 18 of the pad (FIG. 7) and the second counter-securing member 40 is formed by a second of the maneuvering recesses 18 of the pad 6 More specifically, the counter-securing members 36, 40 are formed by a notch 41 formed in the wall of the recess 18 concerned.

The road device 2 comprises a first and a second support brackets 42, 44.

According to the invention, the first support bracket 42 carries the first cam 24 and the first securing member 34. The second support bracket 44 carries the first additional cam 24 as well as the second securing member 38.

Each support bracket 42, 44 is a single piece made of a single piece including molding and preferably cast iron. Accordingly, the first securing member 34 is integral with the first cam 24, and they are manufactured in one piece. Moreover, they came from matter to one another. Similarly, the second securing member 38 and the first additional cam 24 are integral with each other and made in one piece. Moreover, they came from matter to one another.

Each support bracket 42, 44 is an individual piece distinct from the frame 4 and is a piece attached to this frame 4.

In Figure 10 is shown the support bracket according to the invention. The support brackets 42 and 44 are identical. Each support bracket 42, 44 is symmetrical with respect to a plane of symmetry PS. Each support bracket 42, 44 has a first cam surface 50 and a second cam surface 52. The two cam surfaces 50, 52 extend symmetrically on either side of the symmetry plane PS, and the symmetry plane PS thus forms a plane of cam symmetry.

Each cam surface 50, 52 is a flat surface that extends at an angle α relative to the plane of opening (Figure 1 1). The angle a is between 45 ° and 60 °. In the mounted state of the support brackets 42, 44, each cam surface 50, 52 is adjacent to the wall wing 10.

The support bracket 42, 44 has a first securing surface 54 and a second securing surface 56. The first securing surface 54 and the second securing surface 56 extend symmetrically from each other. on the PS plane of symmetry, and the symmetry plane PS forms a plane of symmetry of security.

As can be seen in particular in FIG. 6, the first two securing surfaces 54 of the two support consoles 42, 44 are situated on the same side of the symmetry plane PS of each support bracket 42, 44 concerned and the second securing surfaces. 56 of the two support brackets 42, 44 are located on the same side of the symmetry plane PS of the support bracket concerned.

The first securing surface 54 of the first support bracket 42 is formed by the first securing member 34 and the second securing surface 56 of the second support bracket 44 is formed by the second securing member 38.

Each support bracket 42, 44 also has a blocking recess 60 (see Figure 1 1) adapted to receive the buffer and to define the blocked open position of the buffer. The blocking recess 60 includes a first blocking surface 62 and a second blocking surface 64 (FIG. 11) adapted to prevent tilting of the pad 6 to the closed position when the pad is in the locked open position. In this case, the second blocking surface 64 is formed by the second cam 28.

The pad 6 has first 66 and second 68 associated blocking counter surfaces (Figure 8). In this case, the second counter-blocking surface 68 is formed by the counter-cam 30.

The road device 2 comprises a muting element 70 (see FIG. 5) adapted to inhibit or inhibit the engagement of the buffer 6 in the blocking recess 60 of the first support bracket 42. Thus, the element of FIG. inhibition 70 prevents a passage of the buffer 6 from its released open position to its open position blocked in the support bracket 42. The road device 2 is devoid of an additional muting element adapted to inhibit the engagement of the buffer 6 in the blocking recess 60 of the second support bracket 44. Thus, a passage of the tampon 6 from its released open position to its open position locked in the support bracket 44 is allowed.

The road device 2 comprises for each of the support brackets 42, 44 fastening means 80 adapted to fix the support bracket 42, 44 to the frame 4.

These fixing means 80 comprise on the one hand a screw 82 and a nut 84 and on the other hand a hole 86 formed in the frame 4 as well as a receiving notch 88 formed in the support bracket 42, 44. The road device 2 also comprises a spacer 90 placed between the head of the screw 82 and the receiving notch 88 of the first support bracket 42. Thus, the inhibition element 70 is formed by the screw 82. the embodiment described, the spacer 90 is constituted by an additional nut.

The road device also comprises stop means 100 adapted to oppose a translational movement of the buffer in the plane PV-PV in the closed state and during closure.

These abutment means comprise a stop 102 disposed on each of the support brackets 42, 44 and an associated abutment 104 disposed on the pad. In this case, each stop 102 is formed by an abutment nose disposed on the central end of the support bracket 42, 44. Each abutment 104 is formed by a surface of a recess in the buffer 6. The stop 102 is received in the recess forming the abutment 104 in the closed state. In the case where the road device 2 is provided with an assistance cylinder biasing the buffer towards the open position, the stop 102 and the counter-stop 104 form cams and against-cam which, when closing, cooperate . During this cooperation, the cams 24 and cam follower 26 are out of contact.

Furthermore, the road device 2 comprises pads 1 10 made of plastic, for example rubber. The device 2 comprises four pads 1 10 each of which is disposed at a corner recess 18. These pads 1 10 are arranged in the closed state between the pad and the support wing 12 and the buffer is based on the frame via these pads 1 10 (see Figures 6 and 9).

The road device 2 is assembled as follows:

First, the spacer 90 is fixed on one of the screws 82.

The screw 82 carrying the spacer 90 is introduced into the receiving notch 88 of the first support bracket 42. The insertion direction is directed radially to the axis of the screw 82.

Then, the first support bracket 42 is disposed on the support wing 12 of the frame 4, in a direction directed perpendicularly to the PO-PO opening plane and by inserting the screw in the hole 86 formed in the airfoil. 12. Then, the nut 84 is tightened against the support wing 12.

Then, the screw 82 without spacer is introduced into the receiving notch 88 of the second support bracket 44, perpendicular to the axis of the screw. Then, the second support bracket 44 is disposed on the support flange 12 of the frame 4, in a direction directed perpendicularly to the PO-PO opening plane and by inserting the screw 82 in the hole 86. Then, the nut 84 is tightened against the support flange 12. The buffer 6 is brought into its released open position by putting the first buffer against cams 26 in contact with the first cams 24 and is brought into its closed position by a tilting around the axis AA.

The operation of the road device 2 is as follows.

Initially, the road device 2 is in the closed state.

The device defines a first angular range of the buffer 6 tilting relative to the frame 4, which is delimited by the closed position and a first limit angle which is for example 10 °. On this first angular range, the pads 1 10 adjacent the hinges 20,22 slide on the support wing 12, the first cams 26 slide on the wall wing 10, and the second cams 30 slip on the second cams 28.

The device defines a second angular range of tilting of the buffer 6 relative to the frame 4, which is delimited by the first limit angle and by a second limit angle, which is for example 90 ° or the open position. On this second angular range, the first cams 26 slide on the first cams 24, and the second cams 30 slide on the second cams 28. On this second angular range, the pads 1 10 are out of contact with the wing of support 12.

The device defines a third angular range which is delimited by the second limit angle and by a third limit angle, which is for example 1 10 °. During the transition from the second angular range to the third angular range, the buffer 6 falls into the blocking recess 60 of the inhibited element support brackets 70 and comes into contact with the muting inhibition element. support provided with an inhibiting element. In the case of the device 2 shown in the figures, the buffer switches around the axis B-B in its locked open position.

Due to the fact that the support brackets 42, 44 carry the first cam 24 and the securing member, the assembly of the road device is easy since only one operation of fixing each support bracket to the frame is necessary. .

Alternatively, the road device has no muting element 70. In this case the buffer 6 is received in the recesses 60 of each support bracket 42, 44 when in its locked open position. The passage between the locked position and the released open position is effected by a shift in translation of the buffer 6 radially to the axis AA and not by a tilting of the buffer around the axis BB. Also, according to another variant, the road device 2 comprises for all the support brackets 42, 44 an inhibition element 70. In this case, the device has no open position blocked. Thanks to the fact that the two support brackets 42, 44 have identical characteristics, only one type of support bracket can be manufactured to equip a roadway device with a hinge allowing the blocking by a tilting around a BB axis perpendicular to the axis of opening / closing AA.

Also, the spacer 90 and the screws 82 are particularly simple and economical.

Alternatively, the road device 2 comprises a frame and at least two pads 6. Each pad 6 is connected to the frame through two brackets of media as described above.

In this case a buffer is a master buffer and the other buffer (s) is / are slave buffers (s).

The above features are separable from each other and can be combined in any technically feasible combination.

Claims

1. - Road device of the type comprising:

a frame (4) delimiting an opening (8),

a buffer (6) having a covering web (14) extending in a plane of sail

(PV),

a first hinge (20) provided with a first cam (24) and a first counter-cam (26) adapted to guide the buffer with respect to the opening between a released open position and a closed position and,

- Securing means (32) opposing in the closed position to a lifting of the buffer in a direction (R) perpendicular to the sail plane, the securing means comprising a first security member (34) and a first counter-organ securing device (36), characterized in that

the road device comprises a first support bracket (42) carrying the first cam (24) and the first securing member (34), this first support bracket (42) being a part attached to the frame (4).

2. - Device according to claim 1, wherein

- The road device comprises a second hinge (22) adapted to guide the buffer between the released open position and the closed position and provided with a first additional cam (24) and a first additional counter-cam (26),

the securing means (32) comprise a second securing member (38) and a second counter-securing member (40), and

- The road device comprises a second support bracket (44) carrying the first additional cam (24) and the second securing member (38), the second support bracket (44) being a part attached to the frame (4).

3. - Device according to claim 1 or 2, wherein the or each support bracket (42, 44) is a single piece manufactured in one piece.

4. - Device according to any one of the preceding claims wherein the first cam (24) and the securing member (34, 38) of the or each support bracket (42, 44) are integral with one of the Other, in particular are made in one piece, and are preferably integral with each other.

5. - Device according to any one of the preceding claims wherein the first cam (24) of the or each support bracket comprises a first cam surface (50) and a second cam surface (52), these two surfaces of cam extending on either side of a cam mirror plane (PS).

6. - Device according to any one of the preceding claims, wherein the or each support bracket (42, 44) comprises a first safety surface (54) and a second safety surface (56) extending from and another of a plan of symmetry of security (PS), and

in the case where the device comprises two support consoles (42, 44), the first securing surfaces (54) of the first and second support consoles are located on the same side of the securing plane of symmetry of the support bracket concerned, and the second securing surfaces (56) of the first and second support brackets (42, 44) are located on the same side of the securing plane of symmetry of the respective support bracket,

the first securing member (34) forming the first securing surface (54) of the first support bracket (42), and the second securing member (38) forming the second securing surface (56) of the second securing bracket (54). support (44).

7. - Device according to any one of the preceding claims, wherein at least the first counter-securing member is formed by a first maneuvering recess (18) of the buffer and, if appropriate, the second counter-securing member. is formed by a second recess (18) for operating the buffer.

8. - Device according to any one of the preceding claims wherein the or each support bracket (42, 44) comprises a locking recess (60) adapted to define a locked open position of the buffer, the locking recess comprising the minus a blocking surface (62, 64) adapted to prevent the pad from tilting to the closed position when the pad is in the locked open position.

9. - Device according to claim 8 wherein the road device comprises at least one muting element (70) adapted to inhibit or inhibit the passage of the buffer from the released open position to the locked open position.

10. - Device according to any one of the preceding claims wherein the road device comprises a first fixing member adapted to fix the first support bracket (42) to the frame (4) and, if appropriate, a second member of fastener adapted to secure the second support bracket (44) to the frame (4).

1 1. - Device according to claims 9 and 10 taken together wherein the inhibiting member comprises the first fastener, and in particular a spacer.

12. - Device according to any one of the preceding claims wherein the or each support bracket (42, 44) is made in one piece, including cast iron.