JPH0577805B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention relates to a tide weir used in an estuary.

``Conventional technology'' In conventional hollow floating box type weir doors, the strong twisting force due to the water pressure applied to the upstream pressure receiving surface concentrates on the rotating shaft provided at the bottom of the waterway side end face, causing damage to that part and causing the weir door to close. There was a risk of damage, and the watertightness between the waterway and the weir door was insufficient (Utility Model Publication No. 14420/1983).

``Problems to be Solved by the Invention'' The present invention can safely withstand the enormous torsion force due to water pressure applied to the upstream pressure receiving surface of an intermediate floating box type weir door, can form a weir door with a thin thickness, and can This is intended to ensure good watertightness with the door and prevent mutual leakage of river water and seawater.

"Means for Solving the Problems" In order to achieve the above object, the present invention provides a rotating shaft protruding from the lower end surface of the hollow floating box type weir door on the waterway wall side, and a coaxial shaft provided on the outside of the waterway wall. In an undulating weir in which a driving cylinder is connected to an arm that extends into the machine room and is provided coaxially, a horizontal hollow sealed cylinder whose upstream side is arcuate is provided on the lower surface of the weir door on the channel wall side, and the upstream side is arcuate. The shaped portion bulges upstream from the upstream pressure receiving surface of the weir door, and following the arc-shaped portion, an arc-shaped plate is provided on the upstream side of the lower surface of the weir door, and the lower surface of the downstream weir door of the same plate is provided on the upstream side of the lower surface of the weir door. The rotary shaft is freely supported on the bottom of the waterway, and the rotating shaft is provided via a flange fixed to the end face of the waterway wall of the weir door and the hollow cylinder, and is provided on a common center line with the center line of curvature of the circular arc. , an elastic water stop plate provided on the bottom side of the upstream waterway, with the inner surface of the two-pronged opening at the tip thereof in contact with the arcuate bulge surface, and the elastic water stop plate provided along the side line edge of the waterway wall on the upstream pressure receiving surface; The inner surface of the bifurcated opening at the tip is in contact with the waterway wall surface, and the end surface of the horizontal hollow hermetic cylinder is provided with an elastic water-stop protrusion that is in contact with the waterway wall.

``Operation'' Therefore, when the weir door float suppression cylinder is set free and the drive cylinder is operated to rotate the rotation shaft via the arm, the hollow floating box weir door will be in the collapsed position (the first position).
It is rotated from the phantom line position in Figure 1 to the standing position (solid line position in Figure 11) and maintained in the standing position. River water is stored on the upstream side of the standing weir door, the water level rises, and water pressure is applied to the weir door. As it moves away from the channel wall due to water pressure, twisting force is applied to the weir gate body toward the downstream side, but because it is a hollow box shape, the weir gate body does not bend. The twisting force tends to concentrate on the rotating shaft, but it is dispersed to the horizontal hollow sealed cylinder and the flange, and the influence of the twisting force on the rotating shaft is reduced. In addition, since the arc-shaped bulging surface of the hollow sealing cylinder bulges out from the upstream pressure receiving surface of the weir door, the strength of the hollow box-shaped portion of the weir door is increased, and therefore the thickness of the hollow box-shaped portion is thin. It is formed. When river water is released at low tide, the weir door is in a collapsed state (imaginary line in Figure 11), and as the tide shifts from low tide to high tide, seawater tries to go upstream. Centered on the imaginary line in FIG. 11 to the solid line in FIG. 11 (during which time the driving cylinder is kept in a free state), seawater is prevented from running up. When the weir door is erected, the inner surface of the two-pronged opening at the tip of the elastic water stop plate is in contact with the arcuate swollen surface and the waterway wall surface, preventing the water stored on the upstream side from leaking to the downstream side. Leakage of seawater to the upstream side is also prevented, and water stoppage of the weir doors is prevented on both the upper and lower ridge sides.

"Example" A horizontal hollow sealed cylinder 7 is provided on the lower surface of the hollow floating box type weir door 1 on the waterway wall 2 side, and the outer diameter of the cylinder 7 is set to the above weir door 1.
The upstream arcuate portion 8 of the cylinder 7 is bulged upstream. Following this upstream arcuate portion 8, an arcuate plate 10 is provided on the upstream side of the lower surface of the weir door 1. Then, the bearing plate 17 provided on the downstream inner surface of the circular arc plate 10 and the lower surface of the weir door is held between the bearing plates 18, 18 provided protruding from the waterway bottom 11, and the holding pin 1
9 supports both bearing plates 17 and 18 loosely. Then, a horizontal rotation shaft 3 is provided protrudingly through a flange 12 fixed to the end face of the weir door 1 and the hollow sealed cylinder 7 on the side of the channel wall 2,
This is extended into the machine room 4 provided on the outside of the waterway wall 2, and a drive hydraulic cylinder 6 is connected to the arm 5 provided on the same shaft 3, and the hydraulic pressure for suppressing the weir door floating is connected in the opposite direction to the cylinder 6. It connects the cylinder 16 to another arm 5 (the same arm 5 may be used). The horizontal hollow sealed cylinder 7 may be provided at both ends of the weir door 1 as shown in FIG. It is made to coincide with the center line of curvature of the shaped parts 8 and 10. The position of this center line is on the lower side of the step formed on the waterway bottom 11, and the inner surface 14 of the bifurcated opening at the tip of the elastic waterstop plate 13 made of rubber or the like bolted to the upper side is connected to the arcuate portions 8, 10. In contact with the bulge surface of An elastic water stop protrusion 15 made of rubber or the like is provided on the end face of the horizontal hollow sealed cylinder 7, and an elastic water stop plate 13' made of rubber or the like is provided along the edge of the upstream pressure receiving surface 9 of the weir door 1 on the channel wall side.
The inner surface 14 of the two-pronged opening is in contact with the waterway wall surface 2. In addition, what is indicated by 20 in the figure is the control room, and 21
22 is a water introduction hole, and 22 is a float housed in the hole 21. By sensing the rise and fall of the float (water level rise and fall), switching of the cylinders 6 and 16 or automatic control of the on/off solenoid valve is performed. In FIG. 3, 23 is a bolt, and 24 is a reinforcing bone.

"Effects of the Invention" Since the present invention is constructed as described above, the twisting force between the water pressure applied to the pressure receiving surface of the weir door and the rotation shaft at the lower end face supporting the weir door is dispersed, and the rotation can be performed safely. A tide control weir that not only can support the weir door in an upright state by the shaft, but also allows the weir door to be made thin, is lightweight and strong, and can maintain a good water stoppage of stored water and seawater. That's what you get.

[Brief explanation of drawings]

FIG. 1 is a rear view showing an embodiment of the tide barrier weir of the present invention, FIG. 2 is a side view taken along line A-A in FIG. 1, and FIG.
The figure is a side view taken along line B-B in Figure 1, and Figure 4 is a side view taken along line B-B in Figure 1.
Side view taken along the line C-C, Figure 5 is from Figure 1 D-D
Figure 6 is a side view drawn by lines, Figure 6 is a perspective view of the water stop part, Figure 7 is
The figure is a plan view taken along line E-E in Figure 6, and Figure 8 is a plan view taken along line E-E in Figure 6.
Figure 9 is a side view of the water stop part at the center of the weir door, Figure 10 is a plan view of Figure 1, Figure 11 is a side view of Figure 1, Figure 12 is a plan view taken along line F-F. 13 is a perspective view of the other embodiment shown in FIG. 6, FIG. 13 is a plan view of the other embodiment shown in FIG. 7, and FIG. 14 is a plan view taken along line FF in FIG. 12. 1...Hollow floating box type weir door, 2...Waterway wall, 3...
Rotating shaft, 4... Machine room, 5... Arm, 6... Drive cylinder, 7... Horizontal hollow sealed cylinder, 8... Arc-shaped portion, 9... Upstream pressure receiving surface, 10... Circle Arc-shaped plate, 11... channel bottom, 12... flange, 13,
13'...Elastic water stop plate, 14...Inner surface of the two-pronged opening at the tip, 15...Elastic water stop projection.

Claims (1)

[Claims] 1 A rotating shaft is provided protruding from the lower end of the waterway wall side of the hollow floating box type weir door, the same shaft is extended into the machine room provided outside the waterway wall, and a driving cylinder is connected to the arm provided on the same shaft. In an undulating weir consisting of a Following the arc-shaped part, an arc-shaped plate is provided on the upstream side of the lower surface of the weir door, and the lower surface of the weir door on the downstream side of the plate is freely supported on the bottom of the waterway, and the rotation axis is connected to the weir door and the hollow tube. A bifurcated opening at the tip of an elastic water stop plate provided on the bottom side of the upstream waterway, provided via a flange fixed to the end face of the waterway wall, and on a common center line with the center line of curvature of the arcuate shape. an inner surface of which is in contact with the arcuate bulging surface, an inner surface of the bifurcated opening at the tip of an elastic water stop plate provided along the edge of the upstream pressure-receiving surface on the channel wall side, which is in contact with the channel wall surface, and the horizontal hollow sealed cylinder; A tide control weir with elastic water-stop protrusions in contact with the channel wall on its end face.