JPS6027766B2 - Tipping gate sand removal device - Google Patents

Description

[Detailed description of the invention] The present invention relates to a sand simulating device for an overturning gate.

Conventionally, this type of overturning gate is designed to fall down during a flood, allowing sand and rocks to flow down with the flowing water, and then to be erected and returned to its original position when the flood ends. The gate is generally supported on the river bed level at the back of the lower end so that it can simply fall down or stand up, and when it falls down, the sand machine is deposited with running water on the river bed near the top of the overturning gate, causing flooding. When the overturning gate is erected at the end of the process, water flowing over the overturning gate entrains the accumulated sand machine and redeposit it on the overturning gate, so that when the next overturning gate is lowered, this redeposited sand is removed. The sandy rocks caused the inconvenience of the overturning gate not being able to fall down properly.

Therefore, as shown in Fig. 1, a guide plate 2 is integrally attached to the back of the overturning gate 1 at an appropriate interval to remove the accumulated sand. A diversion path 3 is provided at the bottom of the gate so that the overflow water from the top of the overturning gate can be discharged from the diversion path 3 to the river bed surface 5 by using a shaft fulcrum 4 at the floor level difference at the lower end of the back as a fulcrum. (0) As shown in Figure 2, the top of the overturning gate 1 is laid down on the riverbed surface, and a rectifying plate is placed at a distance from the pivot point 4 of the overturning gate. 6 is fixed so that the overturning gate can be opened and closed using the rat fulcrum 4 at the lower end of the back as a fulcrum, and the overflow water from the top of the gate is applied to the rectifying plate 6, so that sandy rocks are deposited far from the pivot point of the overturning gate. Some methods have been proposed by Snakes and are publicly known. However, in (1), the flow guide plate opens and closes integrally with the overturning gate, and the effect of the sand machine on discharging sand to a far distance is limited by the angle of the water outlet, the shape of the flow guide plate, etc. However, the construction cost was extremely high, and the 9E sand function was deteriorated due to blockage caused by falling debris.

The present invention is designed to eliminate these drawbacks, and will now be described with reference to embodiments shown in the drawings.
Reference numeral 1 designates an overturning gate, and on the back side of the overturning gate 1, a flow guide plate 2 is provided with a T-shaped bar longitudinal beam 7 or the like at the end 8 with an appropriate gap.
The lower end of the back surface of the overturning gate is supported by the step portion 9 by the fulcrum 4 so as to be openable and closable.

A roller tread surface 10 is provided at an appropriate position on the back surface of the flow guide plate 2, and within the roller tread surface, a roller tread surface 10 is rotatably supported by a support base 11 on the river bed surface 5 and extends over the entire width of the lower end of the back surface of the overturning gate. A roller 4 at the tip of a gate opening/closing arm 13 attached to a cylindrical running water guide 12 provided downstream from the lower end of the back surface and at an appropriate vertical interval is guided. A torque arm 16 is attached to one end of the cylindrical water guide 12 within the pier 15, and a piston 18 of a hydraulic cylinder 17 provided within the pier is connected to the upper end of the torque arm. The overturning gate can be opened and closed by rotating the gate opening/closing arm 13 back and forth through the gate and moving the tip roller within the roller tread surface 10 on the back side of the flow guide plate. A curved flow channel i9 is formed between this cylindrical water guide and the step part of the riverbed surface to direct overflow water between the overturning gate 1 and the flow guide plate 2 to the upstream side of the cylindrical water guide 12. The earth and sand that is dropped and clogged in the curved flow channel 19 is trampled upward and dug downward, and finally the remaining sand is flowed out from the lower part of the flow channel 19. This is how it was done. In addition, W is the water surface, 20' is the spoiler (
watertight rubber), 2 rivers show watertight rubber.

The present invention configured as described above provides a sand removal device for an overturning gate, in which a flow guide plate for guiding overflow water is provided on the back side of the overturning gate with an appropriate gap, and these plates can be opened and closed as a unit. A cylindrical flowing water guide is provided at the lower part of the back of the overturning gate, over the entire span of its lower end, downstream from the lower end of the back and with an appropriate vertical spacing, and the water guide is used to open and close the overturning gate and the flow guide plate. Furthermore, a curved flowing water guide 19 is formed between the cylindrical flowing water guide 12 and the stepped rhomboid part 9 of the floor surface to prevent overflow between the overturning gate and the flow guide plate. By allowing the running water to fall on the upstream side of the cylindrical water guide 12, the earth and sand clogged in the curved water channel flow out horizontally from the narrow curved water channel, forming a high-speed horizontal flow, and creating a high-speed horizontal flow, which can be used to clean sandy beaches. can be deposited far downstream from the bag fulcrum of the opening/closing gate,
Unlike conventional sand evacuation equipment for this type of overturning gate, the sand evacuation effect is limited by the water outlet angle, the shape of the flow guide plate, etc.
Also, unlike current plates, the installation costs are not high.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a conventional sand removal device for an overturning gate, and FIG. 2 is a sectional view of a sand removal device for an overturning gate according to another conventional example.
FIG. 3 is a sectional view of the present invention, and FIG. 4 is an enlarged perspective view showing a main part of the present invention in cross section. 1... Overturning gate, 2... Current guide plate, 9... Step part, 1
2...Cylindrical water guide, 19...Curved water channel. Figure 1 Figure 2 Figure 3 Figure 4

Claims (1)

[Claims] 1. In a sand removal device that removes sand using overflow water flowing down along a flow guide plate provided on the back of an overturning gate, a cylindrical water guide is provided at the lower part of the downstream side of the back of the overturn gate, and a cylindrical water guide is provided at the lower end of the flow guide plate. A sand evacuation device for an overturning gate, characterized in that it faces above a curved waterway formed between a cylindrical water guide and a river bed surface step at an appropriate interval.