JPS5817909A - Reducing device for sound of falling water from sluice gate - Google Patents

Abstract

PURPOSE:To absorb energy generated by the collision of overflowing water with the water surface of the downstream, and to reduce the noises, by mounting a plate body which can be inclined and is formed a clearance between itself and a weir bottom, at a position where the water overflowing from the sluice gate falls. CONSTITUTION:A gate body pivotally set up by a shaft 4 is mounted to a supporting bearing 3 fixed onto a weir body. The gate body can be inclined at an arbitrary angle to the downstream side (b). Bearings 7 are set up at both sides of a bank body 2 at the falling position of the overflowing water, supporting members 9 are pivotally mounted by rotating shafts 8, a noise reducing material 6 is installed to the supporting members 9, and the clearance 10 is shaped between the bank body 2 and the noise reducing material 6. Accordingly, the falling overflowing water flows out to the downstream of a river from the clearance 10. The noise reducing material 6 absorbs energy generated by the collision of the overlowing water with the water surface of the downstream, and reduces noises.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for reducing the sound of overflowing water falling from a water gate.

As shown in Figure 1, in the conventional overflow type water gate, the gate body 1 tilts toward the downstream side, and the earth flow a that is dammed by the gate body 1 flows over the gate body 1. However, the overflowing water hits the water surface on the downstream side at a large falling angle and generates a large noise. It is pivoted on. 5 is water honey rubber.

Recently, with the progress of rural development, this type of water gate is often installed near private residences, and it has become necessary to take measures to prevent the noise caused by the impact of falling overflow water.

The present invention aims to reduce the above-mentioned conventional sound of falling water.

An embodiment of the present invention is shown in FIGS. 3 and 8. 01 is a door body, 2 is a weir body, 3 is a support bearing, 4 is a rotating shaft, 5 is a watertight rubber, 6 is a noise reduction plate, and 7 is a Bearing, 8 is rotating shaft, 9
10 is a support member, 10 is a gap, and the lower part of the door body 1 is pivotally connected to a support bearing 8 fixed on the weir body 2 by a rotating shaft '4,
Water flows from the upstream side a to the downstream side over the door body 1. The door body 1 is designed so that it can be freely lowered to the downstream side at any angle.

Bearings 7 are provided on both sides of the weir body 2 at the position where overflow water falls, a support member 9 is pivotally mounted on a rotating shaft 8, and a noise reduction material 6 is attached to the support member 9. Since there is a gap IO between the weir body 2 and the noise reduction material 6, the fallen overflow water flows downstream from the gap IO.

As described above, the present invention is a device for reducing the sound of falling water from a water gate, which is provided with a noise reduction plate that can be tilted to the falling position of overflow water from the water gate and has a gap with the base. The energy of the falling noise caused by overflow water falling over the top of the door body and colliding with the downstream water surface is absorbed by the noise reduction plate, which has an extremely excellent effect of reducing noise.

FIG. 4 shows another embodiment of the present invention, in which a rotating shaft 11 is also provided at the tip of the support tIIIs material 9, and a noise reduction plate θ is pivotally mounted.

FIG. 5 shows still another embodiment, in which a bearing 7 is provided on the upper part of the weir body 2, a rotating shaft 11 is provided downstream of the support member 9 from the upper part, and a noise reduction plate 6 is pivotally mounted. be.

[Brief explanation of the drawing]

Fig. 1 shows a conventional overflow type water gate; Fig. 2 shows a state in which an embodiment of the present invention is installed in the water gate of Fig. 1; Fig. 3 is a front view of an embodiment of the present invention; FIGS. 4 and 5 are side views of other embodiments, respectively. 1: Door body 2: Weir body 6: Noise reduction plate 7: Bearing 8: Rotating shaft 9: Support member 10; Gap

Claims (1)

[Claims] 1. A device for reducing the sound of falling water from a water gate, characterized by having a noise reduction plate that is tiltable and has a gap between it and the weir bottom at the position where overflow water falls from the water gate.