JP2002146757A - Sluice gate - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sluice gate capable of maintaining watertightness while preventing a gap from being generated due to deflection deformation without increasing the board thickness of the door of the sluice gate. SOLUTION: The sluice gate is provided with a backing plate formed with an opening, the door thereof, which allows the above opening to be opened/ closed, a lifting means for moving up and down the above door, and an urging means for pressing the above door against the backing plate for the purpose of enabling the control of the opening/closing and closing-off of the above opening. In the sluice gate, there are installed reinforcing members for preventing the occurrence of the deflection deformation in the above door during the closing-off of the above door in such a manner as to be coupled to the respective surfaces of the vertical upper end, central part and lower end of the above door. The sluice gate is characteristically constituted so as to transfer pressing force from the central part to the upper and lower ends.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention belongs to the technical field of a switchgear of a floodgate.

[0002]

2. Description of the Related Art Conventional waterways for agricultural use are provided with sluices for water intake and other purposes. Various methods are used for floodgates to control the flow rate. For example, there is a method disclosed in Utility Model Publication No. 1994-3862. FIGS. 7 and 8 show the sluice gate disclosed in this publication. In these figures, a frame 11 of a water gate 10 is attached to a front wall of a water channel entrance such as an intake port. Attachment part 1 with anchor bolt 21
9 is fixed. A receiving plate 14 provided with an opening 13 having substantially the same shape and size as the water channel inlet opening is fixed to the frame 11. Guide rails 17a, 1a, 1b,
7b, and a device 22 including a handle 23 for raising and lowering the water gate 16 up and down and a gear, etc.
On the head of the frame 11. The output shaft of the device 22 and the gate 16 are connected by a connecting rod 18.

In order to keep the water gate 16 watertight, a watertight rubber 24 is fixed to the outer periphery of the water gate 16 by means of tacks or the like on the back side. The sluice gate 16 is pressed against the receiving plate 14 by the water pressure of the upstream water passage 29, but is pressed in the opposite direction by the water pressure of the downstream sluice 12. A biasing device that presses against the receiving plate is required. In this conventional device, wedges 25 and 26 are provided on the inside of the guide rails 17a and 17b and on both ends of the surface of the gate 16 to generate an urging force when the gate 16 comes to the closed position. Thereby, the water gate door 16 stops and the communication path between the water channel 29 and the water channel 12 is completely closed.

[0004]

However, in practice, the urging force of the wedge members 5, 26 pushes only the central portion of the gate 16 or the upper end of the gate 16 due to the water pressure of the water channel 12. Alternatively, the lower end is bent and deformed by the action of the bending moment to form a gap, which causes a problem that the water channel cannot be completely closed. In order to solve this problem, it is possible to prevent bending deformation by increasing the thickness of the material constituting the gate, but according to this solution, the gate becomes heavy,
Another problem arises in that the entire device becomes heavier and more expensive. The present applicant has invented a water gate that has solved this problem, and has already filed an application (Patent Application No. 11-16556).
0). The present invention is an improved or modified invention of the invention as filed. The present invention has been made under the above-described background, and an object of the present invention is to provide a water gate that can maintain watertightness without increasing the thickness of the water gate door and without forming a gap due to bending deformation.

[0005]

The present invention employs the following means to solve the above-mentioned problems. That is, claim 1
The described invention includes a receiving plate provided with an opening, a floodgate opening and closing the opening, an elevating unit for moving the floodgate up and down, and a biasing unit pressing the floodgate door against the receiving plate. In the sluice gate provided to control the opening and closing and closing of the opening,
It is characterized in that a reinforcing member for preventing bending deformation of the gate when the gate is closed is provided.

According to a second aspect of the present invention, in the first aspect of the present invention, the urging means includes a wedge means for applying a pressing force to a substantially central portion in the vertical direction of the floodgate door when the floodgate is closed. Provided, the reinforcing member is provided in connection with the upper surface in the vertical direction of the floodgate, the central portion and the surface of the lower end portion,
It is characterized in that the pressing force is transmitted from the center to the upper end and the lower end.

According to a third aspect of the present invention, in the first aspect of the present invention, the reinforcing member is rotatably provided at a substantially central portion in the vertical direction of the gate, and Is characterized in that the pressing force acting on the upper end and the lower end is equalized.

According to a fourth aspect of the present invention, in the first aspect of the present invention, the reinforcing member comprises:
The water gate is deformed in a curved direction in a direction opposite to the direction in which the bending deformation occurs, and is fixed to the upper end and the lower end by welding or the like.

According to a fifth aspect of the present invention, in the first aspect of the present invention, the reinforcing member comprises:
An adjusting means for adjusting a connection distance between the upper end and the lower end is provided.

[0010] The invention according to claim 6 is the invention according to any one of claims 1 to 5, wherein the floodgate is:
The present invention is characterized in that a deformation process is performed in a curved shape in a direction opposite to a direction in which the bending deformation is caused to cause strain hardening.

The invention according to claim 7 is characterized in that, in the invention according to any one of claims 1 to 6, a plurality of the reinforcing members are provided on the water gate door symmetrically.

[0012]

<Embodiment 1> An embodiment of the present invention will be described below with reference to the drawings. 1 and 2 show a first embodiment of the present invention. 1 and 2, the same components as those of the conventional device are denoted by the same reference numerals, and detailed description is omitted. In these figures, a wedge body 32 formed in a downward wedge shape is provided on both sides substantially at the center of the back surface of the sluice door 31, and
A wedge body 33 formed in an upward wedge shape is provided at an appropriate position on the guide rails 17a and 17b.
The wedge bodies 32 and 33 also serve as stoppers so as to press the sluice door 31 against the receiving plate 14 and prevent the sluice door 31 from going below a predetermined position (a position for closing the opening).

Two (or U-shaped) brackets 36 are fixedly mounted on the front side of the gate 31.
A pin 37 is suspended from the upper part of the sixth. The central portions of the reinforcing members 34, 34 are rotatably fixed to the pins 37. The reinforcing member 34 is formed in a rectangular shape having a high section and a narrow width so as to have a high resistance to a bending moment. Legs (for example, bolts) 38 are provided at the upper end and the lower end of the reinforcing member 34 in order to prevent the water gate 31 from bending and deforming due to the above-mentioned pressing force or water pressure.
The legs 38 may be provided slightly longer, and the pins may be connected in a state where the center of the gate 31 is slightly lifted (displaced to the left in the figure). The leg portion 38 may be provided with a bracket (not shown) and a pin (not shown), and may be pin-connected, or may be press-fitted without being fixed.

With the configuration described above, the device of this embodiment functions as follows. That is, in the initial stage of lowering the sluice door 31 and closing the opening 13, the wedge body 32 and the wedge body 33 are not engaged, so that no pressing force is generated, and a large water pressure does not act on the sluice door 31. Gate 31
No bending deformation occurs. Further, in a state where the water gate door 31 is lowered and the opening 13 is completely closed, the wedge body 32 and the wedge body 33 are engaged with each other, and the pressing force acts on the central portion of the water gate door 31. In addition, the water pressure acts from the downstream water passage 12, and particularly when the water level in the upstream water passage is low, the effect of the water pressure increases. A bending moment acts on the upper end and the lower end of the gate 31 due to the pressing pressure and the water pressure, so that a state in which bending deformation easily occurs.

However, the reinforcing members 34 and 35 are
Pressing the upper end and lower end of the to prevent bending deformation,
There is no gap between the upper end and the lower end of the gate 31. Therefore, the effect of preventing water leakage from the downstream side to the upstream side can be obtained without increasing the thickness of the gate 31. Conversely, even if the thickness of the gate 31 is reduced, the effect of preventing water leakage due to bending deformation can be obtained. Further, when the pins are connected in a state where the gate 31 is warped as described above, since the bending moments partially cancel each other, no water leakage occurs even when the thickness of the gate is further reduced.

<Second Embodiment> FIGS. 3 and 4 show a second embodiment in which a part of the first embodiment is modified. 3 and 4, the same components as those of the conventional device or the above embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted.
In the drawing, a wedge body (not shown) is provided at both ends of a substantially central position (substantially the center position in the vertical direction) of the water gate door 41 as in the above-described embodiment. A bracket 36 is fixed on the surface of the sluice door 41, and the bracket 36
And a central portion of the reinforcing member 42 is rotatably connected by a pin 37. Unlike the above embodiment, the sluice gate 41
However, as shown in FIGS. 4 (A) and 4 (B), plastic deformation processing is applied to the concave shape. The cross-sectional shape of the reinforcing member 42 is substantially the same as that of the above-described embodiment, but the support structure of the leg portions at both ends is different.

In FIG. 4A, the length of the leg 43 is provided so as to be adjustable. Also, in FIG.
Is fixed to the surface of the gate 41 by welding or the like. As shown in FIG. 4B, the leg 45 is welded in a state where the upper end and the lower end of the gate 41 are warped outward (to the right in the figure) in advance, and the bending moment remains as internal stress. You may let it.

The second embodiment has the same effect as the first embodiment. In addition, in the case of FIG. 4B, the water gate 42 is deformed into a recessed shape by plastic deformation, so In comparison, since bending deformation is less likely to occur with respect to the bending moment, the possibility of water leakage is further reduced. Or, conversely, it is also possible to reduce the thickness of the gate. Further, in the case of FIG. 4A, since the length of the leg can be adjusted after the production and the internal stress can be applied in the opposite direction, the effect that the production becomes easy can be obtained.

FIG. 5 shows an example applied to a case where a water passage or a water passage entrance is rectangular or square. Even in this case, the configuration can be the same as that of the first or second embodiment. The other parts are the same as those in the above-described embodiment, and thus the same reference numerals are given and the description is omitted. As described above, the embodiments and examples of the present invention have been described in detail with reference to the drawings. However, the specific configuration is not limited to the examples, and there are design changes and the like that do not depart from the gist of the present invention. Is also included in the present invention. For example, the present invention can be applied to a case where the water channel is different from the above-described shape, or a case where the sluice gate is different from the above-described shape. In that case, the present invention belongs to the technical scope of the present invention.

[0020]

As described above, according to the structure of the present invention, even if the gate is made of a thin material, it is possible to prevent bending deformation due to water pressure or the like and maintain watertightness. can get.

[Brief description of the drawings]

FIG. 1 shows a front view of a floodgate embodying the present invention.

FIG. 2 shows a side view of a floodgate embodying the present invention.

FIG. 3 shows a front view of another floodgate embodying the present invention.

FIGS. 4A and 4B are side views of another floodgate embodying the present invention.

FIG. 5 illustrates yet another floodgate embodying the present invention.

FIG. 6 shows a side view of a conventional floodgate.

FIG. 7 shows a front view of a conventional floodgate.

[Explanation of symbols]

 31 Floodgate 32, 33 Wedge 34, 42 Reinforcement 36 Bracket 37 Pin 38, 43, 45 Leg

Claims (7)

[Claims] 1. A receiving plate provided with an opening, a floodgate opening and closing the opening, lifting means for moving the floodgate up and down, and biasing means for pressing the floodgate door against the receiving plate. In the sluice gate provided to control the opening and closing and closing of the opening,
A floodgate provided with a reinforcing member for preventing bending deformation of the floodgate when the floodgate is closed. 2. The method according to claim 1, wherein the urging means includes a wedge means for applying a pressing force to a substantially vertical center of the gate when the gate is closed, and the reinforcing member is provided at an upper end of the gate in the vertical direction. , Provided in connection with each surface of the central part and the lower end part,
The floodgate according to claim 1, wherein the pressing force is transmitted from a central portion to an upper end portion and a lower end portion. 3. The sluice gate according to claim 1, wherein the reinforcing member is rotatably provided at a substantially central portion in a vertical direction of the sluice door, and a pressing force acting on an upper end and a lower end of the sluice door is equalized.
Alternatively, the sluice according to claim 2. 4. The reinforcing member according to claim 1, wherein the sluice door is curvedly deformed in a direction opposite to a direction in which bending deformation is generated, and is fixed to the upper end and the lower end by means such as welding. The floodgate according to any one of claims 1 to 3. 5. The floodgate according to claim 1, wherein the reinforcing member is provided with adjusting means for adjusting a connection distance between the upper end and the lower end. 6. The sluice gate according to any one of claims 1 to 5, wherein the sluice door is deformed in a curved shape in a direction opposite to a direction in which bending deformation is caused to cause strain hardening. The sluice described. 7. The floodgate according to claim 1, wherein a plurality of the reinforcing members are provided on the floodgate door symmetrically.