JPS6259713A - Automatic rising and falling dam - Google Patents

Abstract

PURPOSE:To make the thicknes of dam gate smallr as well as raise the strength of it by a method in which a horizontal closed hollow cylinder is provided on the downside of the wall of a channel in a hollow box-like dam gate and the upstream side arc-shaped portion of the cylinder is heaved the upstream side. CONSTITUTION:The upstream side pressure-receiving face 9 of a hollow box-like part 1' is extended upwards to form a hollow box-like dam gate 1. A horizontal closed hollow cylinder 7 is provided on the downside of the water channel wall 2 of the gate 1, and the outside diameter of the cylinder 7 is made larger than the thickness of the part 1' to heave the upstream side arc-shaped portion 8 of the cylinder 7 the upstream side. An upstream side arc-shaped plate 10 is also provided on the downside of the part 1' in connection with the portion 8. By automatically controlling an oil-pressure cylinder 12 in response to (by sensing) the vertical movement of a float 19 housed in a water conveyance hole 18, the dam gate 1 can be built to rise and fall freely.

Description

DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention relates to an automatic lodging weir used in rivers.

``Conventional technology'' In conventional hollow box-shaped weir doors, the strong torsional force due to the water pressure applied to the upstream pressure-receiving surface concentrates on the rotating shaft provided at the bottom of the channel wall side end face, causing damage to that part and damaging the weir door. There was a risk that the watertightness between the waterway bottom and the lower part of the flIn was insufficient (Publication of Utility Model Publication No. 14420/1983) 0 "Problems to be Solved by the Invention" To obtain an automatic lodging weir which can safely withstand strong torsional force due to water pressure applied to the front side of the side support, can form a #I door with a small thickness, and has good watertightness with the waterway bottom.

"Means for Solving the Problems" The present invention provides a rotary shaft protruding from the lower end of the channel wall side of the hollow box-shaped weir door, and extends the coaxial shaft into a machine room provided outside the channel wall. In the undulating weir, in which a driving cylinder is connected to an arm provided in An arcuate plate is provided on the upstream side of the lower surface of the weir door, bulging upstream from the side pressure receiving surface and following the arcuate portion, and the lower surface of the downstream weir door of the plate is freely supported on the bottom of the waterway, The rotation shaft is provided via a flange fixed to the weir door and the end face of the hollow cylinder on the waterway wall side, and is provided on the same center line as the center line of curvature of the circular arc, and is located on the bottom side of the upstream waterway. The distal end portion of the provided elastic water stop plate is configured by an automatic lowering weir in which the distal end portion is in contact with the circular arc-shaped bulging surface.

``Operation'' Therefore, when the driving cylinder is operated and the rotation shaft is rotated through the arm, the hollow box-shaped weir door moves from the collapsed position (the position shown by the imaginary line in Figure 5) to the upright position (the position shown by the solid line in Figure 5). Rotate to maintain 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, 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. Although the twisting force tends to concentrate on the rotating shaft, it is dispersed from the horizontal hollow sealed cylinder to the flange, and the influence of the twisting force on the rotating shaft is reduced. When the water level reaches the flood danger level, the cylinder operates and the weir door collapses. In addition, since the tip of the elastic water stop plate is in contact with the circular arc-shaped bulging surface, the water stop is sufficiently stopped, and the water stop plate is pressed into contact with the water stop plate because it bulges in an arc shape by 1 inch from the upstream pressure receiving direction of the weir door. The weir door rises and falls while it is in a pressure-welded state, and the water supply is sufficient, and the arcuate bulge improves the strength of the hollow box-shaped part of the weir door, so the thickness of the hollow box-shaped part is made thin. can do.

"Embodiment" A hollow box-shaped weir door 1 is formed by having a hollow box-shaped part 1 at the bottom and extending its upstream pressure-receiving direction 9 upward.

A horizontal hollow sealed cylinder 7 is provided on the lower surface of the weir door 1 on the side of the waterway wall 2, and the outer diameter of the cylinder 7 is made larger than the thickness of the hollow box-shaped part 1'. bulge upstream. Following this upstream arcuate portion 8, an upstream arcuate cedar board 10 is provided on the lower surface of the hollow box portion 1'. Then, the bearing plate 14 provided on the downstream inner surface of the circular arc plate 10 and the lower surface of the weir door is clamped to a bearing plate 15.15 protruding from the waterway bottom 11, and both bearing plates 14.15 are freely supported by pins 16. . Then, a horizontal rotation shaft 3 is protruded through a flange 12 fixed to the end face of the waterway wall 2 of the hollow box-shaped part molecule and the hollow sealed cylinder 7, and is inserted into the machine room 4 provided outside the waterway wall 2. A driving hydraulic cylinder 12 is connected to an arm 5 provided on an extended coaxial shaft 3. The horizontal hollow sealed cylinder 7 may be provided at both ends of the weir door 1 as shown in FIG. 1, or only at one end as shown in FIG. The center line is made to coincide with the center line of curvature of the upstream arcuate portion 8.10. The position of this center line is on the lower step' side of the step formed in the waterway bottom 11, and the tip of the elastic water stop plate 13 made of rubber or the like bolted to the upper step side is connected to the bulge surface of the arcuate portion 8.10. be in contact with In addition, what is indicated by 17 in the figure is the control room, and 18
A float is housed in the water guide hole 19a and the same hole 18, and by sensing the rise and fall of the float (rise and fall of water level), the switching solenoid valve of the cylinder 12 is automatically controlled, and the weir door can be automatically collapsed at a flood dangerous water level. . 20 is a control device, 21 in FIG. 2 is a bolt, 22 in FIGS. 3 and 4 is a reinforcing bone, and 23 is a water stop plate.

"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 rotary shaft at the lower end face supporting the weir door is dispersed, and the torsional force is safely operated by the rotary shaft. Not only can the weir door be supported in an upright position, but the hollow box-shaped part of the weir door can be made thinner, making it lightweight, strong, and watertight.
n is obtained.

[Brief explanation of drawings]

The first factor is a front view showing the automatic lodging weir of the present invention, Figure 2 is a side view taken along line C-C in Figures 1 and 6, and Figure 3 is a side view taken along line C-C in Figures 1 and 6. Side view, □Figure 4 is the 1st
Figures and Figure 6 A side view taken along line C-C, Figure 5 is a top view 1D
6 is a front view of another embodiment shown in FIG. 1, FIG. 7 is a plan view of FIG. 6, and FIG. 8 is a side view of FIG. 6 viewed from the right. It is. 1.Hollow box weir door, 2.Waterway wall, 3.Rotating shaft, 4
... Machine room, 5. Arm, 6. Drive cylinder, 7.
・Horizontal hollow hermetic tube, 8. Arc-shaped part, 9. Upstream pressure receiving surface, 10. Arc-shaped plate, 11. Channel bottom, 12. Flange, 13. Elastic water stop plate.

Claims (1)

[Claims] (1) A rotating shaft is provided protruding from the lower end of the channel wall side of the hollow box-shaped weir door, the same shaft is extended into the machine room provided outside the channel wall, and a driving cylinder is connected to the arm provided on the same shaft. In the undulating weir, a horizontal hollow sealing cylinder having an arcuate upstream side is provided on the lower surface of the weir door on the channel wall side, and the arcuate portion bulges upstream from the upstream pressure receiving surface of the weir door. 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. The tip of the elastic waterstop plate is provided via a flange fixed to the end surface of the tube on the waterway wall side, and is provided on the center line common to the center line of curvature of the circular arc, and is provided on the bottom side of the waterway on the upstream side. An automatic lodging weir that is in contact with the arc-shaped bulge surface mentioned above.