JP4784885B2 - Arched, irrigation canal plate with adjustable width dimensions - Google Patents

Description

  The present invention relates to a dam plate for an irrigation canal, and in particular, when the width of a canal such as an agricultural canal is different, the width dimension of the dam is adjusted and applied to the canal width.

As a primitive method to block the water flow in the canal for water filling the fields, use a plurality of timber boards cut vertically to the width of the canal by the corner drop technique, or use a composite panel in the width shape of the canal A method of forming and dropping into a groove formed in a water channel is often used.
However, this method is simple, but due to its dimensional accuracy and hard material, it has poor adhesion to the water channel and has a lot of escape water. Therefore, vinyl or earth is used for water sealing, but it is not stable and requires frequent work. Very inconvenient.

In recent years, as a method for simplifying the damming work of water flow, there is a method in which a gate with a plurality of water flow holes on both sides of a hollow structure with open top and bottom is fixed to a water channel in advance and a water shielding plate is dropped inside the gate. Proposed. (See Patent Document 1)
However, it is difficult to say that it is economical because it is necessary to fix the gate for each required waterway.

Also proposed is a method of restoring the water channel water flow by fixing the pipe for rotation support on the upper side of the water channel, attaching the dam plate to the upstream side with the connecting holder, blocking the water flow, and rotating it counterclockwise. ing. (See Patent Document 2)
However, this method also needs to fix a rotating support pipe and a weir plate for each required water channel. In addition, it is impossible for a powerless woman or the like to operate the dam plate by controlling the water pressure from the upstream of the water flow.

In addition, a guide channel for dropping the weir plate is provided in the water channel in advance, a support protrusion for rotation is attached to the upper part, and a chain for operating the rotation is attached to the lower part. A method has been proposed. (See Patent Document 3)
However, this method is also inefficient because it is necessary to prepare a weir plate for each width of the water channel.

  Published Utility Model No.59-38535   Published Utility Model No. 61-40426   Japanese Patent Publication No. 11-181749

In view of this situation, it is necessary for farmers who own multiple rice fields and grow rice to prepare water for paddy fields from channels with different channel widths. Absent.
In addition, as seen in the prior application, a method has been proposed in which a dam plate is fixed to a water channel in advance or a locking material for easily detaching the dam plate is used, but a projection or the like is originally provided in the water channel. As a result, it is difficult to say that the apparatus is appropriate, because a change in the water flow is caused and an overflow from the water channel occurs due to the mooring of foreign matter.
Therefore, the present inventor proposes a dam plate that can block the water flow of a large number of water channels using the irrigation channel dam plate of the present invention.

Means to solve the problem

An irrigation channel dam according to claim 1 of the present invention has a flexible rectangular main body plate surface slightly curved in an arch shape, and a telescopic rod for freely adjusting the degree of curvature on the inner surface side. The structure to provide is proposed.

In addition, the irrigation channel dam plate according to claim 2 is intended to simply adjust the arch-shaped curvature of the plate surface of the main body by a belt method instead of the telescopic rod, and is excellent in production cost and practical.

The invention's effect

The irrigation canal slab of the present invention is able to procure the optimum width dimensions on the site by adjusting the telescoping rods for different channel widths, and easily dams the water flow of the target channel It can be done. Further, since the arch shape causes a force to increase the arch-shaped curvature by the water pressure of the water flow, there is an effect of further strengthening the closeness between the both ends of the dam plate and the side wall of the water channel.
Note that if the material of the irrigation channel weir plate of the present invention is made of resin, etc., it can be made lightweight. It can be easily carried by powerless women and the elderly.

The irrigation channel dam plate of the present invention will be described with reference to FIGS. 1 to 2 and FIGS. 4 to 5.
A main body plate surface 1 in which a rectangular flexible flat plate is slightly curved into an arch shape, and a pair of reinforcing bars 4 are fixed in the longitudinal direction on both sides of the inner diameter surface, and a right screw and a left screw are provided between the reinforcing bars. The integrated male screw 2 and the corresponding female screw 3 are connected by a stretchable scissors joined, and an elastic body 5 for water sealing is attached to both ends of the rectangular flexible flat plate, and the water sealing is also used for the lower part. The irrigation channel dam plate can be completed by locking the elastic body 6 for the purpose .

The elastic body 5 or 6 used for water sealing of the irrigation channel weir plate of the present invention includes adhesion and riveting as a method of locking to the main body plate surface 1, but if the locking method can be firmly locked, the present invention. It is not constrained by the method.
Moreover, although the thing similar to rubber | gum or sponge is suitable about the material, what is necessary is just the material which can be water-sealed suitably, and there is no restriction | limiting in the material described in this invention.

In using the irrigation channel dam plate of the present invention, the irrigation channel provided on the side wall 10 of the irrigation channel by appropriately rotating the rotating part of the male screw 2 of the telescopic rod so as to match the width of the target channel. After adjusting the width so that it can be dropped into the vertical groove 12 into which the dam plate is inserted without hindrance, it is inserted into the waterway, the water flow is dammed up, and the water level rises in the waterway to raise the water level from the water inlet 13 for introducing water into the field. It can be performed.

In addition, since the contact angle of the edge part of the main-body board surface 1 and a channel side wall surface changes the both-sides edge part of the irrigation channel weir board of this invention by the curvature degree of an arch shape, both sides | surfaces are appropriate with appropriate width. It is important to bend at an angle.

In addition, since the irrigation channel weir plate of the present invention is basically curved in an arch shape, the water pressure due to the water flow is distributed over the entire surface of the main body plate surface 1, so that it can be made of a thin and flexible resin material. It also has the advantage that it can. However, regarding the material to be used, any material other than those described in the present invention may be used as long as it has a bending stress and is flexible.

Next, claim 2 will be described with reference to FIG.
A main body plate surface 1 in which a rectangular flexible flat plate is slightly curved in an arch shape, and a pair of reinforcing bars 4 are fixed in the longitudinal direction on both sides of the inner diameter surface, and the belt 8 is locked to the reinforcing bars. The hand grip 7 is formed.
That is, instead of the telescopic rod using the male screw 2 and the female screw 3 of claim 1, the length of the belt 8 using the triglide 9 as an adjusting mechanism can be adjusted to freely adjust the arch shape curvature of the main plate 1. It is something to adjust to.

In the irrigation channel dam plate according to claim 2 of the present invention, the gripping hand 7 of the reinforcing bar 4 provided as a pair on the left and right sides of the main body plate surface is drawn with both hands without using the telescopic belt function. It has the advantage that it can be adjusted to the channel width.

Further, the telescopic rod according to claim 1 or the telescopic belt 8 according to claim 2 provided on the inner diameter surface of the main body plate surface 1 of the irrigation channel weir plate of the present invention is provided at two places above and below the reinforcing bar 4. However, the function of blocking the water flow in the water channel can also be sufficiently exhibited by providing it at approximately one central portion of the general reinforcing bar 4.
However, when the width of the water channel is different between the upper and lower sides by providing it at two upper and lower positions as in the present invention (another water channel having an inclined angle or a taper on the side wall of the water channel), the upper and lower sides of the irrigation channel weir plate of the present invention Since the width of the irrigation channel can be adjusted arbitrarily, both ends of the irrigation channel dam plate of the present invention can be fitted to the vertical groove 12 into which the irrigation channel dam plate is inserted into the channel side wall 10 to minimize water leakage. It is.

The irrigation dam plate according to the present invention can be industrially mass-produced and commercialized, and can be used for damming a water channel for introducing water into all fields in Japan.
Of course, in order to use the irrigation channel dam plate of the present invention, it is a condition that the both sides of the channel are provided with longitudinal grooves into which the irrigation channel dam plate of the present invention can be inserted.

Plan view of main body plate surface and expansion / contraction function part screw type Back view of the main plate and the expansion / contraction function part Three-dimensional view of the main plate and the expansion / contraction function section as seen from the back of the belt type Top view with dam plate installed in irrigation channel Rear view and cross-sectional view of waterway with dam plate installed in irrigation waterway

Explanation of symbols

1 Body plate surface 2 Male screw 3 Female screw 4 Reinforcement bar 5 Elastic body (side surface)
6 Elastic body (lower part)
7 Grip hand 8 Belt 9 Triclyde (length adjustment and stopper function)
10 Side wall of irrigation channel 11 Bottom surface of irrigation channel 12 Vertical groove 13 for inserting dam plate of irrigation channel 13 Water outlet for introducing water into the field

Claims (2)

A pair of reinforcing bars are fixed to the body plate surface of a rectangular flexible flat plate slightly curved in an arch shape in the longitudinal direction on both sides of the inner diameter surface, and the two reinforcing bars are connected with an extendable rod. Irrigation channel weir plate that can freely adjust the curvature of the arch shape of the plate surface The irrigation channel weir plate according to claim 1, wherein the mechanism for expanding and contracting instead of the retractable rod is a belt system.

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