JP3740649B2 - Water supply / drainage for paddy fields - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention provides a gate member which is vertically embedded along a ridge, and has a pair of left and right guide grooves having a square opening at the center and a U-shaped cross section on both sides of the opening. With respect to the paddy field water supply / drainage port comprising a dam plate that can be moved up and down with respect to the guide groove and closely fitted, the gate member and the dam plate are both formed of a synthetic resin, It can be easily installed and can hold the embedded state firmly.
[0002]
[Prior art]
A conventional gate of this type is generally constructed of a gate member with vertical grooves facing left and right, made of concrete, and a wooden weir plate that moves up and down using the vertical grooves as a guide. In general, a gate member formed with an opening and a guide groove and made of a synthetic resin together with a dam plate is commercially available and used as disclosed in Japanese Patent Laid-Open No. 2-97423 or Japanese Utility Model Laid-Open No. 4-138425.
[0003]
[Problems to be solved by the invention]
The paddy water supply / drainage port of the above-mentioned prior application can be stably installed in the paddy field by forming the outer shape of the gate member into a vertical bowl shape, and prevents the drainage of cultivated soil near the water mouth, and the weir plate It was designed to have a buried strength that can counteract the flow of water through the water mouth during the elevating and lowering operation.
[0004]
In this conventional synthetic resin water inlet, since the gate member is formed in a bowl shape, the laying of the water inlet has a bowl-shaped three-dimensional structure, which increases the paddy area and labor consumed for installation. There are disadvantages. Furthermore, since the amount of the synthetic resin used is large in view of the shape, there is a manufacturing defect that the cost increases accordingly.
[0005]
Therefore, in this type of synthetic resin water outlet, it is easy to install in paddy fields without reducing the required embedding strength, and to reduce the amount of material used for molding It was an issue to be solved.
[0006]
[Means for Solving the Problems]
Accordingly, the present invention is made of a synthetic resin, each having a square opening in the center, and provided with a pair of left and right guide grooves provided on both sides of the back surface of the opening so as to face each other. The gate member is composed of two members: a gate member embedded in the left and right side edges and a dam plate that can be moved up and down with respect to the guide groove and is closely fitted. It consists of a peripheral surface part that has a depth width and continues in a horizontally long rectangular frame shape, and vertical ribs that are continuous with the upper and lower peripheral surface parts on the front and back in the middle between the left and right peripheral surface parts and the opening respectively. Standing vertically and perpendicular to the vertical ribs, the multi-stage horizontal ribs that reach the side edges of the opening on the front side and the outer side of the guide groove on the back side are provided from the inner surfaces of the left and right circumferential surface parts, respectively, and the opening Cross section from the front edge of the lower peripheral surface forming the lower surface of An embedding support portion that hangs in a letter shape is provided, and the barrier plate is shaped like a square so as to be fitted with an appropriate depth width between the left and right guide grooves on the rear side of the front portion along the opening. So as to form a U-shape facing each other with a depth and width corresponding to the groove width and depth of the guide groove. Provided is a water supply / drainage port for paddy fields, which is provided with a molded side edge portion, and provided with vertical and horizontal ribs for partitioning the inner surface of the fitting portion in a lattice shape and a plurality of horizontal ribs for horizontally partitioning the inner surface of the side edge portion. Is.
[0007]
As shown in FIGS. 1 and 2, the water inlet of the present invention having the above-mentioned configuration is provided with a multi-stage frame shape composed of a peripheral surface portion, vertical ribs and horizontal ribs on both sides of the opening sideways on the front and back sides. Therefore, the outer shape of the gate member is a thin shape having a small width in the depth direction, and has a sufficient strength in spite of forming a horizontally long rectangular frame shape. Further, in the installed state, the inside of the multi-stage frame shape is buried with soil by embedding, so that it is prevented from coming out upward and swinging left and right, and is stably held at the installed position.
[0008]
In addition, since the water inlet of the present invention has a smaller projected floor area compared to the conventional bowl-shaped water outlet, the paddy area consumed for installation and the labor required for the work can be reduced, while the strength in the twisting direction is sufficient. Therefore, it is possible to obtain a strong water outlet that can withstand vibration during the lifting and lowering operation of the weir plate and the flow during water supply and discharge. In addition, the amount of material used for molding is reduced.
The present invention solves the above problems as described above.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention shown in the drawings are as follows. .
The water inlet of the present invention is composed of two members, a gate member A and a dam plate B each made of a synthetic resin molding.
[0010]
【Example】
As shown in FIG. 1, the gate member A has a horizontally long and rectangular opening 1 with a front opening corresponding to the flow rate, and a pair of left and right so as to form a U-shaped cross section on both sides of the back side of the opening 1. The guide groove 2 is provided vertically, and the four side surfaces are constituted by peripheral surface portions 3 a, 3 b, 3 c, and 3 d that are continuous horizontally in a rectangular frame shape with the opening 1 as the center. Each peripheral surface portion 3a, 3b, 3c, 3d has an appropriate depth width suitable for installation in a paddy field, and the opening portion 1 is located in the middle of the depth width, and the dam plate B A vertical recess 14 is formed so as not to hinder the fitting and lifting operation.
[0011]
The gate member A has a vertical rib 4 that is continuous with the upper and lower peripheral surface portions 3c and 3d in the middle of the opening 1 and the left and right peripheral surface portions 3a and 3b. From the inner surface of the peripheral surface portions 3a and 3b, on the front side, a triangle reaching the side edge of the opening 1 as shown in FIG. 3 is formed, and on the back side (FIGS. 1 and 2), a trapezoid is formed continuously to the outer portion of the guide groove 2. And the embedded support portion 6 that hangs down in a L-shaped cross section from the front edge of the lower peripheral surface portion 3d that forms the lower surface of the opening portion 1.
[0011]
Similarly, as shown in FIG. 1, the dam plate B is fitted in a square shape provided so as to be fitted between the left and right guide grooves 2 on the rear side of the front surface portion 7 along the back surface side of the opening portion 1. A side edge portion 9 is formed in a U-shape extending from the fitting portion 8 so as to be continuous with the left and right sides of the fitting portion 8 and having a depth and a width corresponding to the groove width and depth of the guide groove 2. In addition, there are provided vertical and horizontal ribs 10 for partitioning the inner surface of the fitting portion 8 in a grid pattern and a plurality of horizontal ribs 11 for horizontally partitioning the inner surface of the side edge portion 8.
[0012]
In this embodiment, the gate member A is integrally formed with a joint portion 12 that forms a protrusion along the height direction on the left and right outer surfaces, and the joint portion 12 is schematically shown in FIG. A synthetic resin plate C provided with a groove along the outer shape of the joint portion 12 can be connected.
[0013]
In addition, the intersection of the vertical rib 4 and the horizontal rib 5 of the gate member A and the intersection of the vertical and horizontal ribs 10 and 11 of the dam plate B each include a reinforcing portion 13 that has a columnar shape in the depth direction. This portion is configured to prevent bending and increase the strength.
Similarly, the intersections between the peripheral surface portions 3a and 3b of the gate member A and the lateral ribs 5 and the intersections between the side edge portions 9 of the barrier plate B and the lateral ribs 11 also have columnar reinforcing portions 13.
[0014]
Furthermore, the embedding support portion 6 of the gate member A facilitates the embedding of the portion by forming the lower edge in a wedge shape in cross section.
Further, the barrier plate B is configured to be a clue when the barrier plate B is raised and lowered by forming the upper surface of the fitting portion 8 into an arc edge whose center extends in the depth direction.
[0015]
As shown in FIG. 4, the water mouth configured as described above is used by being vertically embedded along the paddy d of the paddy field D. However, it is installed at one place for water supply / drainage, as shown in the figure. It is optional to provide them in two places and use them separately for water supply and drainage. In the figure, E indicates a water channel.
[0016]
As shown in FIG. 5, the gate member A installed at the water mouth is composed of the lower peripheral surface portion 3 d, the vertical ribs 4, and the horizontal ribs 5, with the opening 1 approximately at the center when embedded in the soil. It functions as an anchor due to the accumulation of soil that penetrates into the frame-shaped space, and is prevented from coming off and steady. Further, since the embedded support portion 6 that hangs down to the lower portion of the front edge is deeply placed in the soil on the side of the water channel E, the gate member A is firmly held against the earth pressure and water pressure on the paddy field side.
[0017]
When the gate B installed together with the gate member A is pushed down from the height shown in FIG. 5, the opening 1 is opened to drain the water of the high-level paddy field, and conversely when the water level on the irrigation channel E side is high Is watered.
The resistance generated in the gate member A when the dam plate B is opened and closed does not impair the stability of the embedded state by sufficiently withstanding the force of the gate member A being a horizontally long rectangle.
[0018]
【The invention's effect】
As described above, the water supply / drainage port for paddy fields according to the present invention is thin and has a projected floor area that is significantly smaller than that of the conventional bowl shape. The exclusive area can be reduced. Moreover, since it has the stability of an embedding state and becomes small and light, there is an effect that the consumption of material is small and the cost can be reduced.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view showing a first embodiment of the present invention from the back side. FIG. 2 is a perspective view showing an assembled state from the back side. FIG. 3 is a perspective view showing an assembled state from the front side. FIG. 4 is a plan view schematically showing the use state. FIG. 5 is a partially longitudinal side view of the use state of the embodiment.
[Explanation of symbols]
A gate member B barrier plate 1 opening 2 guide groove 3 peripheral surface (3a, 3b.3c.3d)
4 Vertical rib 5 Horizontal rib 6 Embedded support portion 7 Front portion 8 Fitting portion 9 Side edge portion 10 Rib 11 Horizontal rib 12 Joint portion 13 Reinforcing portion 14 Recessed portion C Plate D Paddy field d 畦 E

Claims (5)

Each gate is made of synthetic resin, has a square opening in the center, and has a pair of left and right guide grooves provided on both sides of the back of the opening so as to face each other. The gate member is composed of two members, a weir plate that allows the right and left side edge portions to be moved up and down with respect to the guide groove and is closely fitted, and the gate member has four sides with appropriate depth widths. It is composed of a peripheral surface portion that is continuous in a horizontally-long rectangular frame shape, and vertical ribs that are continuous with the upper and lower peripheral surface portions are erected on the front and back in the middle between the left and right peripheral surface portions and the opening, respectively. At right angles to the vertical ribs, from the inner surfaces of the left and right peripheral surface portions, the front side reaches the side edge of the opening, and the back side forms a multistage horizontal rib that reaches the outer side of the guide groove, and forms the lower surface of the opening. Hanging from the front edge of the lower peripheral surface to an L-shaped cross section A fitting support portion is provided, and the barrier plate is fitted in a square shape so as to be fitted with an appropriate depth width between the left and right guide grooves on the rear side of the front portion along the opening. Sides that are formed so as to form U-shapes that are continuous with each other on both the left and right sides of the fitting portion and have a depth and width corresponding to the groove width and depth of the guide groove and facing each other. A water supply / drainage port for paddy fields provided with a plurality of horizontal ribs for horizontally separating the inner surface of the side edge portion and the vertical and horizontal ribs for partitioning the inner surface of the fitting portion in a lattice shape. 2. The water supply / drainage port for paddy fields according to claim 1, wherein the gate member is integrally formed with left and right side surfaces, respectively, with joint portions with ribs that form ridges in the height direction. 2. The water supply / drainage for paddy fields according to claim 1, wherein a crossing portion between the vertical rib and the horizontal rib of the gate member and a crossing portion of the vertical and horizontal ribs of the dam plate each have a reinforcing portion having a columnar shape in the depth direction. mouth. The paddy field inlet / outlet according to claim 1, wherein the embedded support portion of the gate member has a lower edge having a wedge-shaped cross section. The water supply / drainage port for paddy fields according to claim 1, wherein the barrier plate is formed into an arc edge whose center extends in the depth direction on the upper surface of the fitting portion.

Images