JPS6054447B2 - Sediment prevention device for tilt gate - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for preventing sedimentation on the downstream side of a support portion of a tipping gate.

If sediment accumulates on the downstream side of the tilt gate, it will prevent the gate from opening completely, so the accumulated sand must be removed in a timely manner.

For this reason, a conventional method has been used in which gate overflow water flows into the gate from the top of the gate and is discharged downstream from the bottom of the gate to sweep away the accumulated sediment. However, this method has the inconvenience of requiring the gate to have a special structure, and also has the problem of floating objects flowing into the gate and clogging it. SUMMARY OF THE INVENTION An object of the present invention is to provide a sedimentation prevention device for a tipping gate that eliminates the above-mentioned drawbacks of the prior art. Embodiments of the present invention will be described below with reference to the drawings. In FIG. 1, the gate main body 1 includes a main shaft 4 rotatably supported on a waterway side wall facing a step 3 of a river bed 2, a plurality of longitudinal girders 5 fixed to the main shaft 4, and a plurality of longitudinal girders 5 that are connected to each other. It has a connecting crossbeam 6 and a skin plate 7, has a spoiler 9 on the top end 8, and holds the lower part of the gate body 1 in the water by bringing the water rubber 10 fixedly supported on the step part 3 into contact with the main shaft 4. There is.

A shaft 13 fixed to the lower end of a water guide plate 12 is rotatably supported on a support stand 11 fixed to a river bed 2 on the downstream side of the gate main body 1.

14 is a reinforcing material.

The water guiding plate 12 is provided with supports and stands 1 within each interval of the longitudinal girders 5.
They are arranged in the horizontal direction of the waterway and have a width that can fit together with the waterway. A long hole 15 extending in the longitudinal direction of the gate in each longitudinal girder 5
The threaded rod 18 is fixed to a metal fitting 17 supported by a pin 16 passing through the metal fitting 17, and the threaded rod 20 is pivotally supported on hinge fittings 19 protruding from both sides of the upper end of the water guiding plate 12. They are connected by a turnbuckle 21. When the gate body 1 is in the upright position shown in FIG.
6 is in contact with the upper end of the elongated hole 15, and the rods 18 and 20 are in a substantially horizontal position. The water that has flowed over the top 8 is transferred to the water guiding plate 12.
It falls upward, flows down near the main shaft 4, and further passes under the shaft 13 to flow downstream. Since the water guide plate 12 is separated at each longitudinal girder interval as described above, a portion of the overflow water flows through the water guide plate 12.
However, most of the overflow water temporarily accumulates between the gate body 1 and the water guide plate 12, and then flows out from below the shaft 13 as described above, causing sediment to accumulate near the main shaft 4. There's nothing to do. When the gate body 1 rotates in the opening direction, the water guide plate 12 also rotates in the same direction, and when the water guide plate 12 reaches a horizontal position and is stopped by a stopper (not shown), thereafter, as the gate body 1 rotates, the water guide plate 12 rotates in the same direction. When the pin 16 slides inside the elongated hole 15 (FIG. 2) and the gate body 1 is completely inverted, the pin 16 moves to the lower end of the elongated hole 15 as shown in FIG. , the water guide plate 12, the rods 18, 20, etc. are stored in the recesses between the longitudinal girders on the back side of the gate body 1.

Therefore, even if the water guide plate 12 is provided, it is not necessary to install the support stand 11 particularly low. When raising the gate body 1 from the inverted position, the water guide plate 12 is raised in the reverse order.

The reason why the long holes 15 are provided so that the water guide plate 12 is inverted before the gate body 1 and stands up later is as follows.

That is, when the gate is inverted, the gate body 1 and the water guide plate 12
becomes horizontal, and during floods, driftwood moves from rolling stones to water guide plate 1.
2, it is necessary to limit the length of the water guide plate 12 in the vertical direction so that it is completely covered by the gate body 1.
In order to ensure that the water guide plate 12 having a limited length can reliably catch water flowing over the gate when the gate is erected, the upright angle θ of the water guide plate 12 should be made smaller than the upright angle of the gate body 1. This is because the overflow water receiving surface at the tip of the plate 12 needs to protrude sufficiently toward the downstream side. FIG. 4 shows an embodiment in which the gate body 22 has a back plate 23 like a fish belly gate.

In this case, since the gate body 22 does not have a recess in which the water guide plate etc. can be stored when it is inverted, the water guide plate 24 is made into one panel with the same length as the gate body 22, and the support base 26 of the rotating shaft 25 is used as the gate body. In order to fix the main body 22 on a riverbed 28 that is one level lower than the riverbed 27 that supported it, and to raise and lower the water guide plate 24, the back plate 2
A plate 30 having an elongated hole 29 is attached to 3, one end of a rod 31 is locked in the elongated hole 29 so as to be movable up and down, and the other end of the rod 31 is pivotally attached to the upper end of the water guide plate 24. With this connection structure, when the gate is inverted, the water guide plate 24 is folded under the back plate 23. ) Instead of a connecting means that locks the rods 18, 31 so as to be slidable up and down along the elongated holes 15 or 29, the rod 18 may be pivoted to the vertical beam 5 of the gate body as shown in FIG. A chain 32 is interposed in the middle of the rod 18, so that the chain 32 bends and bends when the rod 18 is inverted.
Alternatively, a connecting member 33 whose rotation angle is controlled as shown in FIG. When connected and inverted, the rod 20 or 31 connects to the water guiding plate 12 or 2.
It is also possible to use a connecting means that can move toward the distal end of the connecting member 4.

The present invention has the above-mentioned configuration, and allows overflow water to flow down toward the river bed immediately behind the gate using the water guide plate provided outside the gate body, so that sedimentation near the gate can be prevented, and the water guide plate and the gate body A connection means is provided between the gate body and the gate body so that the gate body covers the top of the water guide plate in the inverted position, and the water guide plate has a smaller upright angle than the gate body in the upright position. This has the effect of not only protecting the board, but also sufficiently catching water flowing over the gate onto the water guiding board when standing up, thereby effectively preventing sedimentation. Further, when the water guide plate is stored in the recess on the back side of the gate body when the water guide plate is inverted, there is no need to create a large drop in the river bed where the water guide plate is inverted, which is advantageous in terms of the structure of the waterway.

[Brief explanation of the drawing]

Fig. 1 is a side view of one embodiment of the present invention when standing up, Fig. 2 is a side view of the same in the middle of the inverted position, Fig. 3 is a side view of the same in the inverted position, and Fig. 4 is a side view of another embodiment. The perspective views, FIGS. 5A and 6B, and FIGS. 6A and 6B show side views of different connecting means, in which "a" shows the upright state and "b" shows the inverted state. 1, 22...Tendo gate body, 2...
・River bed, 5... Longer girder, 7... Skin plate, 12, 24... Water guide plate, 15, 29...
...Elongated hole, 18, 20, 31... Connection rod, 15-21, 29-31, 32, 33... Connection means.

Claims (1)

[Scope of Claims] 1. A water guide plate is provided on the downstream side of the tilting gate main body, the lower end of which is separated from the river bed and pivoted so that it can be raised and lowered, and the water guide plate is interlocked with the gate main body between the gate main body and the water guide plate. A connecting means is provided for rotating the water guide plate in the upright direction later than the gate body in the upright and inverted position, and the water guide plate is covered from above by the gate body in the inverted position, and has a tip at the tip in the upright position. A sedimentation prevention device for a tipped gate, characterized by having a size that can receive overflow water from a gate body. 2. On the downstream side of the tipping gate main body, which has recesses divided by longitudinal girders on the back of the skin plate, a plurality of water guide plates each having their lower ends separated from the river bed and pivoted so as to be able to be raised and lowered are mutually installed. and providing connecting means between the gate body and each water guide plate for raising and lowering the water guide plate in conjunction with the gate body and for rotating the water guide plate in the upright direction later than the gate body in the inverted position, A sedimentation prevention device for a tilted gate, characterized in that the water guide plate is stored in the recess in the inverted position, and has a tip portion large enough to receive overflow water from the gate body in the upright position. 3. A connecting rod according to claim 1 or 2, which has a connecting means having one end pivotally connected to the water guide plate and the other end of the connecting rod slidably locked in a vertical long hole provided in the gate body. Sediment prevention device for tilt gate.