JPH11158846A - Structure of flash-board and channel opening method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To hoist a flash-board set in a groove of a channel for elimination with the force as small as possible by forming a specified flash-board with a flow-out port for flowing out the stored water, and providing a sealing member for opening and closing the flow-out port. SOLUTION: Plural block type flash-boards 2 are dropped in order into guide grooves 6 formed of a part of a side wall 5 of a channel and arranged opposite to each other so as to form an impervious wall 8. A rectangular outflow port 10 is formed in the lowest-positioned flash-board 2a at one end in the longitudinal direction, and a sealing member 13 to be moved in the vertical direction between a closing position for closing the out flow port 10 and a flowing position for opening the out flow port 10 is provided in the upstream side of the channel. When the sealing member 13 is raised to the opening position, the water flows out through the out flow port 10, and water level is lowered, and the flash-boards 2, 2a exposed from the water surface can be easily hoisted in order without receiving the water pressure. Namely, the flash-boards 2, 2a can be hoisted by the minimum force of a dead weight thereof.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a corner drop structure and a method for opening a water channel used for blocking a water channel such as a sewerage facility or an agricultural waterway facility.

[0002]

2. Description of the Related Art In sewerage facilities, agricultural waterway facilities, cultivation and fishery facilities, etc., maintenance, inspection or repair of facilities are performed with the treatment layers and waterways in each facility empty, or the waterway is not used. For the purpose of adjusting the amount of water, etc., the water channel is blocked by a corner drop stacked at a required height.

[0003] As shown in FIG. 7, a corner drop 52 is inserted into a vertical guide groove 51 provided on a wall 50 of a water channel, and the water cutoff wall 55 having a required height is formed by stacking the angle drop 52 in a plurality of stages. Constitute.

[0004] When the maintenance and inspection work is completed or the amount of water is changed, the angle drop 52 that blocks the water is lifted up and removed.

[0005]

SUMMARY OF THE INVENTION
When removing 2, each angle drop 52 is usually lifted one step at a time by a lifting device. However, since the angle drop 52 is immersed in water, water pressure acts on each angle drop 52. Requires a large lifting force.

[0006] If a large lifting force is required for the work of removing the corner drop 52 in this manner, the work becomes large and there is a drawback that the size of the lifting device will be increased in the future. Therefore, an object of the present invention is to make it possible to lift and remove a corner drop set in a groove of a water channel with a minimum possible force.

[0007]

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, the present invention has been made as a corner-dropping structure and a method of opening a water channel. In the guide groove, the both ends of the corner drop are inserted from above, and the water is blocked by the corner drop, and the blocked water flows out to the specific corner drop. And a closing member capable of opening and closing the outlet is provided.

[0008] When the outlet is opened, the water blocked by the corner drop is discharged to the downstream side through the outlet. Due to the decrease in the amount of water, the corner drop that is exposed from the water surface and has no or little water pressure can be appropriately lifted with a minimum force.

In addition, there are a plurality of corner cuts, and the outlet is formed at the lowest corner cut, and the closing member is provided with an actuating means capable of moving from a closed position for closing the outlet to an open position for opening. Preferably.

The method of opening the water channel is characterized in that both ends of the corner drop are inserted into a pair of guide grooves arranged opposite to each other, and the outlet formed in the corner drop is closed by a closing member. The object of the present invention is to block the water by closing the container, open the outlet of the closing member and open the outlet, and lift the corner drop with a predetermined amount of water flowing out from the outlet.

Since the outlet of the corner drop is closed by a closing member, water is blocked without flowing out from the outlet. Then, when the closing of the closing member is released and the outlet is opened, the water that has been blocked by the corner drop flows out downstream through the outlet. For this reason, when lifting a corner drop, it is possible to easily lift the corner drop after water has flowed out to a state where no water pressure acts on the corner drop.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to the drawings. In FIG. 1, reference numeral 2 denotes a corner drop made of, for example, a long glass fiber reinforced urethane resin foam, which has a block shape having an effective height of 200 to 600 mm. Each corner drop 2 has a guide groove 6 formed by a part of a side wall 5 such as a water channel and arranged opposite to each other.
Inserted and dropped.

A plurality of corner cuts 2 are sequentially dropped to form a plurality of steps, and a water blocking wall 8 for blocking water is formed.

The type of the foaming resin constituting the corner drop is preferably a urethane resin. For example, a thermosetting resin such as an epoxy resin, a vinyl ester resin, an unsaturated polyester resin, and a phenol resin can also be used. is there. In order to improve the compressive strength and reduce the cost, an inorganic filler such as calcium carbonate or gypsum, or a lightweight aggregate such as a shirasu balloon, a pearlite, or a glass balloon may be added to the foamed resin. Examples of the glass fiber include a glass roving, a glass roving cloth, a glass mat, and a continuous strand mat.

As shown in FIGS. 2 to 4, reference numeral 10 denotes an outlet formed in one of the longitudinal directions of the lowermost corner drop 2a.
The outlet 10 is opened in a rectangular shape so that the upstream side (the side where water is stored) and the downstream side of the corner drop 2a communicate with each other.

Reference numeral 13 denotes a closing member which moves up and down so as to change its position between a closed position for closing the outlet 10 and a flowing water position for opening the outlet 10.
It is made of a rectangular plate member and is set larger than the outlet 10 so that the entire outlet 10 can be closed, and is installed on the upstream side of the water channel.

An L-shaped guide body 15 is provided on the upstream surface 2 of the corner drop 2a so as to be located on both left and right edges of the outlet 10.
b and are provided in the vertical direction, respectively. Therefore,
The closing member 13 is movable up and down while sliding on both sides of the guide body 15. Note that a stopper 16 for positioning the closing member 13 at the closed position is provided at the lower end of the guide body 15 as shown in FIG.

An opening means 17 such as a wire, a chain or a rod is connected to the upper surface of the closing member 13.
The closing member 13 can be raised to the flowing water position by appropriately winding the opening means 17 or pulling it up by a gear mechanism.

The opening means 17 may be wound by a worker using a manual device, or may be automatically wound by an operating means having a driving means such as a motor.

The corner drop structure of the present embodiment has the above-described structure, and its use will be described below.

When the water channel is to be shielded, first, an angle drop 2a provided with the outflow port 10 and the closing member 13 is hung by a conventionally used device, and both ends are inserted into the guide groove 6. And drop it. At this time, the closing member 13
Is in a closed position, and the outlet 10 is closed.

Similarly, a plurality of corner cuts 2a are sequentially dropped into the guide grooves 6 to form a water impervious wall 8, thereby blocking a water channel. Since the closing member 13 is lowered to the closed position,
Water does not flow out from the outlet 10 and the water flows through the impermeable wall 8.
It is blocked by. Since the closing member 13 is provided on the upstream side of the corner drop 2a, it is pressed by the corner drop 2a by the pressure of the blocked water, and the sealing property between the two is improved.

When the water channel is opened, when the opening means 17 is wound up by operating means which is operated manually or by a driving means, the closing member 13 rises to change the position to the open position, and the closing member is moved to the open position. Release the blockage and open the outlet. At this time, the closing member 13 is driven by
However, the area of the closing member 13 is
Since it is smaller than a and has a thin plate shape, the closing member 13 can be raised with a relatively small force.
The operating means may be provided on the side wall 5 side, or may be provided on the side of the device for lifting the angle drop 2, 2a. Also,
The closing member 13 may be configured to be detached from the guide body 15.

When the closing member 13 opens the outlet 10,
The blocked water flows out through the outlet 10.
Since the water level falls with the outflow of water, the corner drop 2a that has been submerged is exposed from the water surface. The corner drop 2a can be appropriately lifted and removed in a state in which the corner drop 2a is completely exposed from water or is slightly affected by water pressure such as a state of being slightly submerged. In this manner, each corner drop 2 can be appropriately removed without being affected by the water pressure.
It can be lifted with a minimum force due to its own weight.

The present invention is not limited to the above embodiment. For example, as shown in FIG. 5, the closing member 13 may be moved in the longitudinal direction of the corner drop 2a.
The shape of the outlet 10 and the shape of the closing member may be circular or polygonal, other than rectangular, and is not particularly limited.

Furthermore, the position of the outlet 10 is preferably provided on one side of the angle drop 2a in consideration of the strength surface,
It may be provided at the center. Furthermore, it is also possible to provide a plurality of outlets 10 in the longitudinal direction of the corner drop 2a, and the outlet 10 is not necessarily limited to the lowest corner drop 2a, and may be provided in the second-stage or more corner drop 2a. Although it may be provided on each of a plurality of specific steps 2 and 2a, it is preferable to provide the lower steps 2 and 2a.

Since the closing member 13 is provided on the upstream side of the corner drop 2a, it is advantageous in that the watertightness of the closing member 13 and the corner drop 2a is improved, but the strength of the guide body 15 is obtained. In addition, by adopting a structure in which water tightness is obtained between the two, the closing member 13 can be provided on the downstream surface (back side) 2c of the corner drop 2a.

The closing member 13 is angled and the surface 2 on the downstream side of 2a
In the case of providing at c, as shown in FIG. 6, the upper edge of the closing member 13 is pivotably supported by a connecting means 20 such as a hinge. The guide member 15 provided on the corner drop 2a includes a closing member 13
A fixing means 21 for fixing the both side portions is pulled out upward and freely fitted.

Then, each fixing means 21 is connected to the opening means 1.
7, the closing member 13 becomes free, and the water swings the closing member 13 upward so that the outlet 1
Run water from 0.

When the opening means 17 is constituted by a rod or the like instead of being pulled up, it may be pushed downward.

The material of the corner cut is not particularly limited to the above-mentioned glass long fiber reinforced urethane resin foam, but may be inorganic fiber such as carbon fiber, natural fiber, synthetic fiber or the like in addition to glass long fiber. It may be an organic fiber, and may be made of wood, concrete, iron or the like.

[0032]

As described above, in the specific angle drop according to the present invention, an outlet for discharging the dammed water is formed in the specific angle drop, and the outlet can be opened and closed. Since the members are provided, there is an advantage that each corner drop which has been drained out of the blocked water and is not affected by the water pressure can be easily lifted with a minimum force.

In addition, there are a plurality of corner cuts, and the outlet is formed at the lowest corner cut, and the closing member is provided with an actuating means capable of moving from a closed position for closing the outlet to an open position for opening. This makes it possible to easily and quickly move the closing member.

Further, the method of opening the water channel has an advantage that the work of removing the corner drop inserted in the guide groove can be easily and quickly performed with a minimum force.

[Brief description of the drawings]

FIG. 1 is an overall view including a partial breakage according to an embodiment of the present invention.

FIG. 2 is a sectional front view showing a state where the closing member is located at an open position.

FIG. 3 is a sectional side view showing a state where the closing member is located at a closing position.

FIG. 4 is a sectional plan view of the same.

FIG. 5 is an overall view showing another embodiment of the present invention.

6A and 6B show another embodiment of the present invention, wherein FIG. 6A is a cross-sectional plan view showing a main part, and FIG. 6B is a cross-sectional side view showing a main part.

FIG. 7 is an overall view showing a conventional example.

[Explanation of symbols]

 2, 2a Square drop 6 Guide groove 7 Handle 8 Device body 22 Suspension device 10 Outflow port 13 Closure member

Claims (3)

[Claims] 1. A corner-dropping structure in which both ends of a corner-dropping are inserted from above into a pair of guide grooves arranged opposite to each other, so that water is blocked by the corner-dropping, and The cut-off structure according to claim 1, wherein an outlet for discharging the blocked water is formed in the cut-off, and a closing member capable of opening and closing the outlet is provided. 2. The method according to claim 1, wherein the outlet is formed at a lowermost corner drop, and the closing member is provided with an actuating means capable of moving from a closed position for closing the outlet to an open position for opening. 2. The corner-dropping structure according to claim 1, which is provided. 3. The water is blocked by inserting both ends of a corner drop into a pair of guide grooves arranged opposite to each other, and closing an outlet formed in the corner drop with a closing member. Further, a method of opening a water channel, wherein the closing of the closing member is released, the outlet is opened, and a corner drop is lifted with a predetermined amount of water flowing out from the outlet.