EP0741206B1 - Overflow sluice gate - Google Patents

Description

The present invention relates to a barrier gate with overflow, of the type comprising at least one panel tilting flap forming a rectangular shape, articulated by its lower base on the ground so that the panel can move in rotation between a horizontal folded position and a raised position, by through training means including at minus a member articulated by its free end on the side of the panel opposite the ground, said panel comprising stiffening means, in particular in bending see p. ex. CH-A-640 289.

Dam doors, known of this type are designed to withstand the strong pressures of water, in raised position of the valve panel. They for this purpose have reinforcing elements and / or stiffening on their downstream face (opposite to the reservoir).

This layout has at least two major drawbacks.

First, the stiffening elements welded in general on the downstream side entail a high cost of manufacturing and transportation.

Secondly, the known doors present in consequently a large thickness, for example of the order 500 mm or more. So in the folded position horizontal, the door already forms in itself a restraint at least this height, very significant, which greatly reduces the difference in useful height of the dam, corresponding to the difference between the levels of water respectively corresponding to the raised positions and folded down from the barrier door.

It has been proposed, in a known manner, to try to remedy these drawbacks of digging the raft downstream of the retainer for the horizontal folded door. However, these works are long and above all expensive. fact of the cost of sheet piling and pumping; more the topography and lithology do not always allow execution of these works under conditions reasonable economic.

So far, users wishing to install an overhead boom gate have no other alternatives to having thick known doors protruding from the plane of the downstream discharge, or undertake major work to lower the level of the raft to accommodate the folded door.

The invention proposes to remedy these disadvantages and relates to a barrier gate tilting, thin, while presenting a adequate resistance to water pressure.

To this end, according to the invention, the barrier gate overflow of the type comprising at least one panel tilting flap forming, of articulated rectangular shape by one of the sides on the ground, along a horizontal axis, of so that the panel can rotate in rotation between a horizontal folded position and a position relieved, by means of drive or of traction articulated directly or indirectly on said panel, the latter comprising means for stiffening, especially in bending, is characterized in that that the stiffening means comprise at least one longitudinal element (transverse to the flow of water) and having a relatively high rigidity (in a direction transverse to the panel), said element being hinged either on the panel or on a member connected to said panel, so that a share the forces due to the push of the water and applied to the panel are transmitted to said stiffening element, notably in the substantially upper part of said panel (opposite the ground), and on the other hand, said element of stiffening presents its direction of greater flexural strength, in a direction substantially perpendicular to said panel, at least in the part of the travel of the panel close to the raised position.

Preferably, the stiffening element is consisting of a flat, longitudinal beam.

According to a first variant, the beam is articulated on the horizontal side of the panel opposite the ground, and the drive means are articulated at their ends free on the upstream part of said stiffening element according to a horizontal axis offset upstream relative to the axis of articulation of the stiffening element on the panel. Of preferably the stiffening element is hinged nearby from the upper part (side opposite to the ground) of the panel.

According to a second alternative embodiment, the beam stiffening is mounted articulated at the end of a series of connecting rods, the other ends of which are themselves hinged mounted on the upper side of the panel (opposite the ground), said beam resting on the ground in downstream of the panel, the drive means being mounted articulated on said beam.

Preferably, the drive means include a cable, tie rod, arm, jack or the like, of which the end opposite to the panel is fixed to means motor, at a height such that, in the raised position of the panel, the stiffening element forms a substantially angle right with said panel.

Advantageously and in order to reduce costs, the stiffening beam is articulated by a set pins attached to the beam and / or panel, aligned along the same horizontal axis, each associated with a ring fixed on the panel and the beam respectively stiffening.

In order to avoid possible vibrations of the hinged beam on the upper side of the panel, raised position of the latter, supports are provided at the lateral ends of said beam, said supports being attached to the structure of the dam.

• la figure 1 montre une vue de côté schématique du principe de l'invention selon une première forme de réalisation, en différentes positions du panneau;
• la figure 2 est vue à échelle agrandie de détail de l'articulation du panneau sur le radier du barrage;
• la figure 3 est une vue à échelle agrandie de détail, de l'articulation de la poutre de raidissement sur le panneau;
• la figure 4 est une vue en plan de la poutre de raidissement;
• la figure 5 est une vue schématique de côté d'un barrage pourvu de la porte de l'invention; et
• les figures 6A et 6B montrent des vues schématiques de côté d'une variante de réalisation, respectivement en position relevée et abaissée du panneau.

The invention will be clearly understood in the light of the following description relating to illustrative but nonlimiting examples, with reference to the accompanying drawings in which:

• Figure 1 shows a schematic side view of the principle of the invention according to a first embodiment, in different positions of the panel;
• Figure 2 is an enlarged detail view of the articulation of the panel on the raft of the dam;
• Figure 3 is an enlarged detail view of the articulation of the stiffening beam on the panel;
• Figure 4 is a plan view of the stiffening beam;
• Figure 5 is a schematic side view of a dam provided with the door of the invention; and
• Figures 6A and 6B show schematic side views of an alternative embodiment, respectively in the raised and lowered position of the panel.

Referring to Figure 1, there is shown so schematic in side view a first form of realization of the device of the invention, forming a dam tilting. For the convenience and clarity of the design, the structure of the dam itself, the piers and reinforcements, were not represented.

On the ground, forming the base of the dam, and bearing the general reference 1, a hinged door is hinged dam referenced 2, forming a valve. Gate 2, articulated on the ground along an axis of articulation A-A, is consisting of at least one sheet metal panel or plate metallic, rectangular in shape and elongated in a direction transverse to the flow of water, symbolized by the arrow f. So, gate 2 is susceptible, in its rotational movement around the axis A-A, to take several positions between a first extreme horizontal position substantially parallel to the ground, and a second raised extreme position where it bears the reference 20, corresponding to a maximum water retention position in the dam upstream of the gate. We also represented two intermediate positions 21 and 22 of door 2 where this forms an acute angle with the ground. In the raised position 20 of door 2, this forms a angle close to 90 ° with the ground and preferably less than 90 °.

On the door 2 is mounted an articulated element of stiffening in the form of a stiffening beam bearing the reference 3, and the respective references 30, 31 and 32 for the respective raised positions 20 and intermediaries 21 and 22 of door 2. The beam of stiffening consists of a metal plate longitudinal, in the transverse direction to the water flow (arrow f). The beam of stiffening 3 has a length (direction transverse to the flow) substantially equivalent or very close to the length in the same direction, the door 2.

The stiffening beam 3 is mounted articulated on door 2 along a longitudinal axis X-X with respect to the door 2 and beam 3, and transverse to the flow some water. More particularly, the beam is articulated on panel 2 so that the upstream side 4 of the beam 3 is located near the upper side 5 (opposite the floor) of door 2.

Note that in the raised position 20 of door 2, the beam 3 in its position 30, is substantially perpendicular to the plane of door 2.

Door 2 is likely to be driven in rotation about the horizontal axis A-A by through any known means, such as by example one, and preferably two cables, of which only the cable 6 is visible in FIG. 1. Preferably, two cables are provided, references 6 and 7 (figure 4), of which the free end of each is fixed in rotation, according to an axis Y-Y, on the stiffening beam 3. More particularly the end of cables 6 and 7 (figure 4) is attached to the upstream end of reinforcements transverse, respectively 8 and 9 provided on the beam 3. Preferably, the reinforcements 8 and 9 are arranged at lateral ends of the stiffening beam 3 (see figure 4). The side reinforcements 8 and 9 protrude by relative to the upstream side 4 of the stiffening beam 3. The Y-Y axis of articulation of the cable on the reinforcements side 8 and 9 (and therefore on beam 3) is shifted towards upstream with respect to the axis of articulation X-X of the beam 3 on door 2 (see figures 1 and 4).

With reference to FIG. 1, the cable 6 is shown in position 60 in raised position 20 of the door 2, and in respective positions 61 and 62 for the intermediate positions 21 and 22 of door 2.

Cable 6 (the same is true of cable 7) goes over a pulley 10 rotatably mounted, for example on a pile the dam (not shown); the end of cable 6 is associated with drive motor means known in themselves but not described further in detail, and symbolized by the functional block 11. The double arrow g symbolizes the movement of the cable at the outlet of the means motor 11 to the pulley 10.

Starting from the lowered horizontal position of the door 2, where it rests on the ground, actuation motor means 11 in the direction of cable traction 6 in a direction opposite to the flow of water (arrow f), causes the lifting of door 2, and therefore its rotation around the horizontal axis A-A. Door 2 therefore forms an acute angle with the ground. In one first, the cable pull on the beam also causes the rotation of the beam 3 relative at door 2. The beam 3 and door 2 form, in horizontal lowered position of door 2, an angle substantially 180 °; then as the lifting from door 2, the angle becomes less than 180 °.

We have shown a dotted position intermediate respectively 22, 32 and 62 of door 2, beam 3 and cable 6. In the lowered position door 2 horizontal, beam 3 rests substantially on the ground 1. In the intermediate position shown in dotted lines, the beam 32 bears on the ground 1 only by its downstream end 12. As soon as the cable 6 is subjected to the traction means 11, the beam 3 is lifted from the ground in its upstream part (side 4) while its downstream end 12 continues to rest by the ground and slides by this same downstream end 12 on the ground to the intermediate position in dotted line 32. As and as the cable is subjected to tension, the door 2 continues its rotational movement around the horizontal axis A-A, and the beam 3 no longer rests on the ground (see intermediate position 21, 61 and 31).

In the intermediate position 21, 31 and 61 of the door, beam, cable assembly, the beam 31 has a obtuse angle (between 90 and 180 °) with door 2.

Cable pulling continues, door 2 continues its rotational movement to reach the raised position 20 where it is substantially vertical or at an angle close to 90 ° with the ground. In this raised position of door 2, the beam 3 is preferably arranged so that it forms a substantially right angle with door 2.

It is understood under these conditions that the forces due to the push of the water on door 2, subjecting it to buckling or bending forces, are taken up by beam 3. These efforts have a direction substantially orthogonal to door 2. Now, beam 3 is intimately associated with door 2, and presents precisely in this transverse direction a very great rigidity. Indeed, the beam 3 being constituted of a planar element, is very little deformable, even undeformable in its plan, that is to say in the direction of the buckling and bending forces to which door 2 is subjected.

FIG. 2 shows a detailed view schematic on an enlarged scale of the means of secured in rotation of door 2 on the ground 1. A rigid metal rod bearing the reference 13 is placed parallel to the ground, close to it, and in a direction transverse to the flow of water, parallel to door 2 and substantially the same length as door 2. Rod 13 materializes axis A-A of rotation of the door 2 relative to the ground. Rod 13 is maintained relative to the ground through hoops 14 and 15 preferably arranged in pairs, so that the space between each hoop 14-15 of each couple can allow to have a hoop 16 shaped of U inside which the rod 13 is arranged, the arch 16 itself being made integral (by welding for example) from door 2.

FIG. 3 also shows schematically and on an enlarged scale, a view of detail of the means for rotationally fixing the door 2 relative to beam 3.

On door 2 are fixed two U-shaped arches forming a couple and bearing the references 17 and 18, fixed by welding for example on door 2. Both hoops 17 and 18 are arranged near one of the other, and are made integral with a pin in in the form of a metal rod 19. Between the arches 17 and 18, integral with beam 2, is capable of being disposed a U-shaped hoop 25 inside which is arranged the pin 19; the arch 25 is fixed on the beam 3 by welding for example.

The pin 19 materializes the axis of rotation X-X of beam 3 with respect to door 2. It is planned as much of hoop assemblies 17, 18, trunnion 19 and hoop 25 that necessary along sides 4 and 5 opposite door 2 and beam 3 respectively.

Figure 4 shows a top view of beam 3 and door 2, in the raised position of door 2, where finds the elements described above, bearing the same references. The number and spacing of triplets roll bar 17, 18 and 19 (Figure 3) is a function of mechanical stresses and general dimensions of the beam and door.

In Figure 5, there is shown a schematic view side of the dam and in particular the structure comprising a pile 26, a buttress 27 resting on the ground 1. We finds the cable 6 fixed to the beam 3 itself articulated on door 2. A support 28 is provided on the reinforcement 27 of stack 26, and capable of serving as support for beam 3, in the raised position of the door 2, i.e. in position for which the beam 3 is substantially horizontal or slightly oblique. support 28 thus makes it possible to avoid or minimize the effects of vibrations to which beam 3 could be subjected, due to spillage of water in the retaining position (corresponding to the raised position of door 2).

Figures 6A and 6B show in cross section a variant implementation of the invention, where the elements of the same or similar nature include the same references, with an A index for the raised position of door 2 (figure 6A) and of an index B for the lowered position of door 2 (Figure 6B). Thus, on the floor 1 is articulated the door 2A, according to axis A-A.

On the upper side (opposite the ground) of door 2, is articulated, along an axis B-B, a series of connecting rods 35A (of which only one is shown in FIGS. 6A and 6B). The other end of the connecting rod 35A is articulated, along a C-C axis, a beam 36A. The C-C axis is horizontal and close to the ground. Note that the axes of articulation A-A, B-B and C-C are materialized by trunnions, rods, cables or the like, so known, and / or as described above and shown in Figures 2 and 3.

Cable 6A is fixed at its free end (downstream) to beam 36A. This has a shape similar to the beam 3 of Figures 1 and 4 and preferably includes a longitudinal rib 37, so that the beam seen in cross section (in a plane parallel to the flow of water) forms a sort of L. The beam 36A thus rests on the ground by its upstream part (on the side of the axis joint C-C with the connecting rod 35A) and by the edge lower of rib 37.

The cable 6A is associated with a return pulley 10, and its other end is connected to means symbolized by a functional block 11. Only the cable 6A is visible in FIGS. 6A and 6B; two cables are provided, at each lateral end of beam 36, similarly to the shape of embodiment shown in Figures 1 to 5.

Preferably, to write off the dam, downstream of doors 2, is arranged to present a slight slope downstream, from the axis of articulation A-A.

The operation of the device shown on the Figures 6A and 6B is as follows.

Starting from position 2A raised from door 2, shown in Figure 6A, we see that it forms an acute angle, close to the vertical, with the ground. The thrust force to which door 2 is subjected is passed on to the connecting rods (35A), which in turn reflect this effort on the cable 6A which thus undergoes all of the tensile forces.

Water pushing efforts, tending to deform door 2, and therefore to flex or flame it, are transmitted to beam 36A, via connecting rods 35A.

From the raised position of door 2, shown in Figure 6A, leaving the cable 6 to run downstream, door 2 is thus allowed to pivot around the axis A-A until taking an extreme position lowered 2B shown in Figure 6B, for which it is substantially horizontal. The connecting rod 35B then has a substantially horizontal direction and slightly oblique, parallel to the sloping raft marked 40.

When passing door 2 from position raised 2A to the lowered position 2B, the beam 36 slides on the downstream raft 40. To this end, the latter

When passing door 2 from position raised 2A to the lowered position 2B, the beam 36 slides on the downstream raft 40. To this end, the latter can be fitted out to be fitted with metal rods forming rails, regularly distributed on the raft in a direction parallel to the flow of water. To note that such metal rods or rails of sliding can also be provided in the form of embodiment shown in Figure 1, thus allowing the downstream end 12 of the beam 3 to slide on these rails. The latter have the advantage of allowing to avoid wear and damage to the downstream raft 40.

As a variant, the downstream ends of cables 6 and 7 can be joined together on the upper side of the door 2 (on the side of the joint B-B of the connecting rods 35).

It can be seen, in the lowered position of door 2, that either in position 2B of the embodiment shown in FIG. 6B or in position 2 of the form of embodiment of Figure 1, that the thickness, in a plane vertical (transverse to the flow of water) is reduced, which greatly optimizes the ratio useful of the dam, which can be defined as the height separating the upper planes of the door, respectively in the raised position and in the lowered position.

For information and illustration, we give below some non-limiting examples of dimensions of the device of the invention.

Height of deflection pulley 10 relative to floor: 2000-2500 mm.

Distance in flat projection between the pulley of deflection and axis A-A: 2800-3500 mm.

Height / length transverse to the flow of water from the door: 100 to 300 cm.

Beam width (in the direction of water flow): 300-500 mm.

Rod spacing (Figures 6A and 6B) between 0.5m and 1m.

Cables 6 and 7 are capable, as a variant, of pass through the slots provided on door 2, and associated with lips made of flexible material for sealing said slots.

Claims (10)

1. Assembly forming overflow sluice gate, of the type comprising at least one tilting panel (2) forming valve, of rectangular shape and articulated on one of its sides on the ground so that the panel can move in rotation between a substantially horizontal folded down position and an active (substantially vertical) raised position, via drive means (6-7), the panel (2) comprising means for stiffening, particularly in bending,
   characterized in that the stiffening means comprise at least one stiffening element (3) mounted articulated on the panel, directly or via an intermediate member, along a longitudinal axis (X-X) (perpendicular to the flow of water) and connected to said drive means (6-7) of the panel, so that, on the one hand, the efforts of thrust of the water to which the panel is subjected are taken up by said stiffening element, and, on the other hand, the stiffening element is substantially perpendicular to said panel, at least in that part of the stroke of the panel close to the raised position of the latter, said stiffening element presenting a considerable rigidity in a plane transverse to the panel in raised position.
2. Assembly according to Claim 1, characterized in that the stiffening element (3) is constituted by a planar longitudinal beam.
3. Assembly according to one of Claims 1 or 2, characterized in that the stiffening element (3) is articulated on that side (5) of the panel opposite the ground, and is disposed on the downstream side of the panel.
4. Assembly according to Claim 3, characterized in that the drive means (6-7) are articulated on the upstream part (4) of said stiffening element (3), along a transverse horizontal axis (Y-Y), offset towards upstream with respect to the axis of articulation (X-X) of the stiffening element on said panel.
5. Assembly according to Claim 4, characterized in that the drive means comprising a cable, tie, arm, jack or the like, of which the end opposite the panel is fixed to motor means (11), at a height such that, when the panel (2) is in raised position, the stiffening element (3) forms a substantially right angle with said panel (2).
6. Assembly according to Claims 2 and 3, characterized in that the stiffening beam (3) is articulated by an assembly of journals (19) fixed to the beam (3) or to the panel (2), aligned along the same horizontal axis (X-X), each associated with a ring (17, 18, 25) or bow fixed on the panel or the stiffening beam, respectively.
7. Assembly according to one of Claims 1 or 2, characterized in that it comprises connecting rods (35A) articulated at one end on the upper side (opposite the ground) of the panel (2A), and articulated by their other end on said stiffening element (36A), the latter being adapted to rest on the ground and to move by sliding over the ground during rotation of the panel.
8. Assembly according to Claim 7, characterized in that the drive means (6A) are fixed to the lower end of the connecting rod (35A) or on said stiffening element (36A).
9. Assembly according to one of the preceding Claims, characterized in that there are provided supports (28) for the lateral ends of the stiffening element (3), when the panel is in raised position.
10. Assembly according to one of the preceding Claims, characterized in that the stiffening element (3) is associated with sliding members fixed on the downstream platform (40).

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