JPH11256556A - Derricking gate - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a derricking gate which can easily remove earth and sand on a door in a short time. SOLUTION: A horizontal shaft 2 is mounted on the base part of a door 1, and a cylinder 3 supporting the center part of the door 1, a cylinder 4 raising and lowering the horizontal shaft 2, and a receiving table 5 supporting the end of the door 1 are installed on a river bed 6. The end of the door 1 is supported on the receiving table 5 via a roller 8, and the base part of the door 1 is raised by the cylinder 4 and turned over to remove earth and sand collecting on the door 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an undulating gate used for a river weir or the like.

[0002]

2. Description of the Related Art As a weir of a river or the like, as shown in FIG. 5, an up / down gate is used which turns a door body 20 around a horizontal shaft 19 to stand up or fall down. This undulating gate is normally used to stand up to form a part of a weir, and to fall down when the flowing water increases and reaches a specified water level to let the water flow down. The door 22 is rotated by driving a cylinder 22 installed in the housing 21. Conventionally, the cylinder 22 for rotating the door body 20 is designed with the ability to raise the door body 20 against water pressure as a guide.

[0003]

When the amount of water increases remarkably due to heavy rain or the like, a large amount of earth and sand flows down together with the water, so that earth and sand are deposited on the fallen door body. In the above-mentioned conventional undulating gate, when a large amount of earth and sand is deposited on the door body, the door body cannot be erected.Therefore, the accumulated earth and sand must be removed by a human power or a bulldozer, etc. There was a problem that required a great deal of labor and time.

An object of the present invention is to provide an undulating gate capable of easily removing earth and sand on a door in a short time.

[0005]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, according to the present invention, there is provided a cylinder provided with a door rotatably supported about a horizontal axis on a riverbed downstream of the door. In the up / down gate where the back side is supported and stands up and falls down, another cylinder for raising and lowering the horizontal axis is provided on the riverbed, and a pedestal is provided below the tip of the door body in the downturned state. Therefore, a configuration was adopted in which the tip of the door body was supported and formed to be able to be inverted.

That is, the tip end of the folded door body is supported by the pedestal, and the base of the door body supported on the horizontal axis by the another cylinder is lifted and inverted, so that the sediment on the door body is transferred to the downstream riverbed. Can be discharged.

If a roller is attached to either the tip of the door or the pedestal and the tip of the door is supported via the roller, the door can be turned upside down with smooth movement. Can be done.

Further, by placing the horizontal shaft on a bearing stand installed on a riverbed, the load on the cylinder that supports the base of the door body in normal times can be reduced.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.

As shown in FIG. 1, a horizontal shaft 2 is attached to a base of a door 1 and a cylinder 3 for supporting a central portion of the door 1 and a cylinder 4 for moving the horizontal shaft 2 up and down. And a cradle 5 for supporting the tip of the door 1 are installed on the riverbed 6.

A roller 7 supported by the cylinder 3 and a pedestal 5
The roller 8 supported is mounted. A spoiler 9 is also attached to the tip of the door body 1. A rubber contact portion 10 having an arc-shaped cross section is provided at the base of the door body 1, and the rubber seal 1 attached to the step portion 11 of the weir is provided.
At 2, the base of the door 1 is watertight.

A receiving surface for the roller 7 is formed at the tip of the ram 13 of the cylinder 3. This configuration is equivalent to the ram 13
A roller may be attached to the tip, and a receiving member on which the roller rolls may be attached to the door 1 side. A bearing fitting 15 to which the horizontal shaft 2 is rotatably fitted is attached to the tip of the rod 14 of the cylinder 4.

FIG. 2 shows a state in which the door 1 is laid down. The ram 13 of the cylinder 3 is lowered, and the door 1 is moved to the center and the base by the ram 13 of the cylinder 3 respectively.
And the rod 14 of the cylinder 4. At this time, the roller 8 at the front end of the door 1 is in a state of being lifted from the receiving table 5. Earth 16 on the door 1
Are deposited.

FIG. 3 shows a state in which the rod 14 of the cylinder 4 is raised from the state shown in FIG. 2, the door body 1 is inverted, and the accumulated sediment 16 is discharged to the downstream riverbed 6. At this time, a part of the earth and sand 16a is
However, since the amount is small, it can be easily removed by human power or the like.

At the initial stage of raising the rod 14, as described above, since the roller 8 is floating from the pedestal 5,
The door 1 is tilted about the roller 7 supported by the ram 13 as a fulcrum. At this time, since approximately the same amount of earth and sand 16 is deposited on both sides of the fulcrum, the door 1 can be tilted with a relatively small force. Thereafter, the roller 8 comes into contact with the cradle 5 and the door body 1 is tilted with the roller 8 as a fulcrum.
Since 6 flows downstream, the load applied to the rod 14 is greatly reduced, and the cylinder 4 can invert the door 1 with a small force.

FIG. 4 shows another embodiment in which a bearing stand 17 for supporting the horizontal shaft 2 of the door 1 is installed on the riverbed 6.
In this embodiment, the horizontal shaft 2 is placed on a bearing base 17 via a bearing hardware 18, and the tip of the rod 14 of the cylinder 4 is connected to the horizontal shaft 2 via the bearing hardware 15 as in the case of FIG. It is connected to. In this case, the door 1
Is supported by the bearing base 17, so that the load on the cylinder 4 can be reduced.

In the above-described embodiment, the roller 8 is attached to the front end of the door 1, but a roller may be attached to the pedestal 5 side.

[0018]

As described above, the undulating gate according to the present invention is provided with a cylinder for raising and lowering the horizontal axis of the base of the door body, and a pedestal provided below the tip of the door body in the down state. The tip of the door body is supported on the table, and the base of the door body is lifted by the cylinder so that the door body is inverted. Therefore, sediment deposited on the door body can be easily removed in a short time. Further, since the front end of the door body is supported by the receiving table via the roller, the door body can be inverted with a smooth movement. Further, by separately providing a bearing base for supporting the horizontal shaft, it is possible to reduce the load on the cylinder in normal times.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing an embodiment of an undulating gate.

FIG. 2 is a longitudinal sectional view showing a state where the undulating gate of FIG. 1 is laid down;

FIG. 3 is a longitudinal sectional view showing a state where the undulating gate of FIG. 1 is inverted;

FIG. 4 is a partially omitted longitudinal sectional view showing another embodiment.

FIG. 5 is a longitudinal sectional view showing a conventional undulating gate.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Door body 2 Horizontal axis 3, 4 Cylinders 5 Cradle 6 Riverbed 7, 8 Roller 9 Spoiler 10 Rubber contact part 11 Step part 12 Rubber seal 13 Ram 14 Rod 15 Bearing bracket 16, 16a Earth and sand 17 Bearing base 18 Bearing hardware 19 Horizontal axis 20 Door body 21 Riverbed 22 Cylinder

Claims (3)

[Claims] A door, which is rotatably supported about a horizontal axis, is supported by a cylinder installed on a riverbed downstream of the door on the back side and rises and falls down at a river gate. Another cylinder for raising and lowering the horizontal axis is provided, and a pedestal is provided below the tip of the door body in the falling state, and the tip of the door body is supported on the cradle so that the door can be inverted. An undulating gate. 2. A method according to claim 1, wherein a roller is attached to one of a front end portion of said door body and said pedestal, and a front end portion of said door body is formed to be supported by said pedestal via said roller. Item 3. The undulating gate according to Item 1. 3. The up-and-down gate according to claim 1, wherein the horizontal shaft is mounted on a bearing stand installed on a riverbed.