JPH0348287B2 - - 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 rotation shaft provided at the bottom of the end face on the channel wall side, causing damage to that part and causing the weir door to collapse. There was a risk of damage to the waterway and the watertightness between the waterway and the weir door was insufficient (publication of Utility Model Publication No. 14420/1983).
Furthermore, when the weir door is laid down at low tide to release stored water, the weir door repeatedly rises and descends due to the influence of dynamic water pressure, which may result in damage to the weir door.

``Problems to be Solved by the Invention'' The present invention can safely withstand strong torsional force due to water pressure applied to the upstream pressure receiving surface of a hollow floating box type weir door, and can form a weir door with a small thickness. The purpose is to maintain good watertightness between the waterway and the weir door to prevent mutual leakage of river water and receding water, and to prevent vertical movement of the weir door when releasing stored water.

"Means for Solving the Problems" The present invention provides a rotating shaft protruding from the lower end of the waterway wall side of the hollow floating box type weir door, and extends the coaxial shaft into a machine room provided outside the waterway wall. In an undulating weir in which a driving cylinder is connected to an arm provided coaxially, a horizontal hollow hermetic cylinder whose upstream side is arc-shaped is provided on the lower surface of the weir door on the channel wall side, and the arc-shaped part is the weir door. An arc-shaped plate is provided on the upstream side of the lower surface of the weir door, which bulges upstream from the upstream pressure-receiving surface and continues from the arc-shaped portion, and the lower surface of the downstream weir door of the plate is freely supported on the bottom of the waterway. , the rotation axis is provided via a flange fixed to the end face of the weir door and the hollow cylinder on the waterway wall side, and is provided on a common center line with the center line of curvature of the circular arc, and is located on the upstream waterway bottom side. The tip 2 of the elastic water stop plate is provided so that the inner surface of the two-pronged opening is in contact with the arc-shaped bulge surface, and the tip 2 of the elastic water stop plate is provided along the waterway wall side edge of the upstream pressure receiving surface.
A specific invention includes a tide weir in which the inner surface of the crotch opening is in contact with the waterway wall surface, and the end surface of the horizontal hollow hermetic tube is provided with an elastic water-stop protrusion that is in contact with the waterway wall surface.

``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 imaginary line position in the figure 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 the water pressure moves away from the channel wall, a twisting force is applied to the weir gate body toward the downstream side, but since it is a hollow box shape, the weir gate body does not bend. Although the twisting force tends to concentrate on the rotating shaft, 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)
As the tide transitions from low tide to high tide, seawater tries to run upstream, but as the sea level rises, the weir door floats up and stands from the imaginary line in Figure 11 to the solid line in Figure 11, centering on the center line of the rotation axis ( During this time, the drive cylinder is kept free), preventing seawater from flowing 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 bulge surface and the waterway wall surface, preventing the upstream water from leaking to the downstream side. Leakage of seawater to the upstream side is also prevented, and water shutoff of the weir door is mutually prevented on both the upstream and downstream sides.
In addition, when the weir door is laid down at low tide and the water stored on the upstream side is discharged, the weir door floatation suppressing cylinder is operated to maintain the weir door in the laid down state at the imaginary line position shown in Fig. 11. Vertical movement due to dynamic water pressure can be suppressed.

"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. Continuing from 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 this circular arc plate 10 and the lower surface of the weir door is attached to the waterway bottom 1.
A clamping pin 19 is attached to the bearing plates 18, 18 protruding from 1.
Both bearing plates 17 and 18 are supported loosely. and weir door 1
A horizontal rotation shaft 3 is protruded through a flange 12 fixed to the end surface of the hollow sealed cylinder 7 on the side of the waterway wall 2, and is extended into the machine room 4 provided outside the waterway wall 2. A hydraulic cylinder 6 for driving is connected to an arm 5 provided at 3, and a hydraulic cylinder 16 for suppressing levitation of the weir door is connected to another arm 5 (the same arm 5 may be used) in the opposite direction to the same cylinder 6. . 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 portion 8, Contact with the bulge surface of 10. An elastic water stop protrusion 15 made of rubber or the like is provided on the end surface of the horizontal hollow sealed cylinder 7.
and an elastic water stop plate 1 made of rubber or the like provided along the edge of the water channel wall side of the upstream pressure receiving surface 9 of the weir door 1.
The inner surface 14 of the bifurcated opening at the tip of 3' is in contact with the waterway wall surface 2. In addition, what is indicated by 20 in the figure is the control room,
21 is a water introduction hole, and 22 is a float accommodated in the hole 21. By sensing the rise and fall of the float (rise and fall of water level), 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" Since the present invention is constructed as described above, the torsional force between the water pressure applied to the pressure receiving surface of the weir door and the rotating shaft at the lower end face supporting the weir door is dispersed, and the rotating shaft is safely attached to the rotating shaft. As a result, it is possible to obtain a tide control weir that not only can support the weir door in an upright state, but also allows the weir door to be made thin, is lightweight, has great strength, and can keep water from stored water and seawater well. It is something. Furthermore, it is possible to prevent vibrations in the vertical movement of the weir door during water discharge.

[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 12F--F. 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, 16...Weir door floating suppression cylinder.

Claims (1)

[Scope of 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 a machine room provided outside the waterway wall, and an arm provided on the same axis is provided. In an undulating weir connected to a driving cylinder, a horizontal hollow sealed cylinder whose upstream side is arcuate is provided on the lower surface of the weir door on the waterway wall side, and the arcuate portion is located upstream from the upstream pressure receiving surface of the weir door. 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 channel, so that the rotation axis is An elastic water stop provided on the bottom side of the upstream waterway, provided via a flange fixed to the end face of the waterway wall of the weir door and hollow cylinder, and provided on the same center line as the center line of curvature of the circular arc. The inner surface of the two-pronged opening at the tip of the plate is in contact with the arcuate bulging surface, and the inner surface of the two-pronged opening at the tip of the elastic water stop plate provided along the waterway wall side edge of the upstream pressure-receiving surface is in contact with the waterway wall surface; and a tide weir comprising an elastic water-stop protrusion in contact with a waterway wall surface on an end face of the horizontal hollow hermetic cylinder. 2. 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; An elastic water-stop protrusion is provided on the end surface of the waterway in contact with the channel wall.
and a tide control weir comprising a weir door floating suppressing cylinder connected to an arm in the machine room.