Water gate device

Abstract

To provide a water gate device which has a pressing part for pressing a door body to a water passing hole side provided on only the door body side closing the water passing hole, and enables pressing of the pressing part with sufficient force.SOLUTION: A water gate device 1 has a door body 4 which is held so as to be vertically movable between guide grooves 7 and 7 and can open / close a water passing hole 2, wherein pressing parts 10 provided on each of both right-left ends of the door body 4 include rotation members 15 and 15 which are rotatable with a shaft part 18 as a shaft, and wedge members 16 and 16 in which an engagement part 16a is positioned in the guide grooves 7 and 7 and is interlocked with the rotations of the rotation members 15 and 15, and the rotation members 15 and 15 are brought into contact with a bottom part 6 at the lower limit position and are rotated so that the rear side ends are lifted, thereby the wedge members 16 and 16 change those attitudes by being interlocked with each other, and expand between the door body part 8 and the inner surface of the guide groove 7 by the engagement parts 16a and 16a and press the door body part 8 backward.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a water gate device that is installed in a waterway and controls water stopping and flow through the waterway. [Background technology]

[0002] Conventionally, there has been known a water gate device in which a wedge is provided on each of a frame body having a water hole and a door body that opens and closes the water hole, and the wedge of the frame body and the wedge of the door body mesh to press down the door body and close the water hole. However, in such a water gate device, it is necessary to provide wedges on both the frame body and the door body, and since the frame body is often already installed in the waterway, it is difficult to provide a new wedge.

[0003] Therefore, Patent Document 1 describes a water gate device in which fastening fittings are provided on a partition plate held in a guide groove, and when the partition plate is slid downward, a pair of fastening fittings open to the left and right, and the wedge-shaped ends of the fastening fittings are inserted between the guide groove and the partition plate to tighten the partition plate. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent Publication No. 2022-3191 Summary of the Invention [Problem to be solved by the invention]

[0005] However, the floodgate device in Patent Document 1 is configured to tighten the partition plate (gate body) by inserting the end of a wedge-shaped tightening fitting into a guide groove, so there is a limit to the force that can be applied to the gate body, which means that it cannot be closed sufficiently.

[0006] Therefore, the object of the present invention is to provide a water gate device in which, while leaving the frame body having the water passage hole intact, a pressing section is provided only on the door body side that closes the water passage hole to press the door body toward the water passage hole, and the pressing section can be pressed with sufficient force. [Means for solving the problem]

[0007] In order to achieve the above object, the invention described in claim 1 is a water gate device including a frame body having a water passage hole and a pair of guide grooves extending vertically opposite each other on both the left and right sides of the water passage hole, and a door body that is held between the guide grooves so as to be movable vertically and can open and close the water passage hole, the door body having a plate-shaped door main body portion, a lid body that is provided on the water passage hole side of the door main body portion and covers the water passage hole at the door body's lower limit position, and a cover body that is provided on the opposite side of the water passage hole of the door main body portion and presses the door main body portion toward the water passage hole side at the lower limit position to seal the water passage hole with the lid body. The door body is provided with a pressing portion which presses the door body against the water passage hole, the pressing portions being provided on both the left and right sides of the door body and including a rotating member which is rotatable about an axis in the left-right direction, and a wedge member at least a portion of which is located within the guide groove and which moves in conjunction with the rotation of the rotating member, the rotating member abutting against a receiving portion provided on the frame body at the lower limit position and rotating, the wedge member changing its posture in conjunction with the rotation of the rotating member, and at the lower limit position taking a pressing posture in which it pushes apart the gap between the door body and the inner surface of the guide groove and presses the door body towards the water passage hole. The invention described in claim 2 is characterized in that in the invention described in claim 1, the rotating member is a V-shaped plate in side view with an intermediate portion protruding downward, one end rotatably attached to the door main body, and the other end to which a wedge member is attached, and at the lowermost position, the intermediate portion abuts against the receiving portion and rotates around one end, causing the other end to change the wedge member to a pressing position. The invention described in claim 3 is characterized in that, in the invention described in claim 2, the wedge member is a plate body that is L-shaped in a plan view, one end of which is attached to the rotating member and the other end of which protrudes into the guide groove, and at the lowermost position, the other end is in a pressing posture inclined in a direction that widens the gap between the guide groove and the door main body. The invention described in claim 4 is characterized in that in the invention described in any one of claims 1 to 3, the rotating members and wedge members are provided in multiples on both the left and right sides of the door main body, and the rotating members lined up vertically on the left and right sides are connected to each other by link members so that they can rotate in unison. Effect of the Invention

[0008] According to the present invention, in a water gate device including a frame body having a water hole and a pair of guide grooves extending vertically opposite to each other on both the left and right sides of the water hole, and a door body held between the guide grooves so as to be vertically movable to open and close the water hole, the door body is provided with a plate-shaped door main body portion, a lid body provided at the rear of the door main body portion and covering the water hole at the door body's lower limit position, and a pressing portion provided on the opposite side of the water hole in the door main body portion and pressing the door main body portion toward the water hole side at the lower limit position to seal the water hole with the lid body. Each pressing portion includes a rotating member that can rotate around an axis portion as an axis, and a wedge member at least a part of which is located in the guide groove and interlocks with the rotation of the rotating member, and when the rotating member abuts against the receiving portion and rotates at the lower limit position, the wedge member changes its position in conjunction with the rotating member, expanding the gap between the door main body portion and the inner surface of the guide groove to press the door main body portion toward the water hole side, and the water hole is closed by the lid body. Therefore, it is possible to block the water hole only with the structure provided on the door body, without providing a separate part such as a wedge on the frame body. Also, the wedge member changes its position in conjunction with the rotating member, and a force acts to expand the gap between the door body and the inner surface of the guide groove, making it possible to press the door body against the water hole with sufficient force. [Brief description of the drawings]

[0009] [Figure 1] FIG. 2 is a front perspective view of the water gate device showing a water passage hole in an open state. [Diagram 2] FIG. 2 is a rear perspective view of the water gate device showing a water passage hole in an open state. [Diagram 3] 1 is a front perspective view of a water gate device showing a state in which a water passage hole is blocked. FIG. [Figure 4]1 is a rear perspective view of a water gate device showing a state in which the water passage hole is blocked. FIG. [Diagram 5] FIG. 2 is a reference diagram in which the frame body and the support plate in FIG. 1 are omitted. [Figure 6] FIG. 3 is a reference diagram in which the frame body and the support plate in FIG. 2 are omitted. [Figure 7] FIG. 4 is a reference diagram in which the frame body and the support plate in FIG. 3 are omitted. [Figure 8] FIG. 11 is a side view showing the state in which the door body is positioned at the upper position. [Figure 9] FIG. 11 is a side view showing a state in which the door body is located at a lower limit position. [Figure 10] FIG. 11 is a front perspective view showing a modified example of the door body. [Figure 11] 11 is an enlarged reference side view of the periphery of the rotating member in FIG. 10. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. 1 to 4 are perspective views showing a water gate device 1 according to the present invention, in which Fig. 1 is a front perspective view showing a state in which the water hole 2 is open, Fig. 2 is a rear perspective view showing a state in which the water hole 2 is open, Fig. 3 is a front perspective view showing a state in which the water hole 2 is closed, and Fig. 4 is a rear perspective view showing a state in which the water hole 2 is closed. Figs. 5 to 7 are reference views in which the frame body 3 and the support plate 13 are omitted from Figs. 1 to 3. Figs. 8 and 9 are side views of the door body 4, in which Fig. 8 shows a state in which the door body 4 is located at an upper position, and Fig. 9 shows a state in which the door body 4 is located at a lower limit position.

[0011] 1 to 4, the sluice gate device 1 has a frame body 3 having a water passage 2, and a door body 4 that is attached to the frame body 3 so as to be vertically movable and opens and closes the water passage 2. The sluice gate device 1 is installed, for example, on the wall surface of an irrigation channel, and allows water to pass and blocks water by opening and closing the water passage 2 with the door body 4. In the sluice gate device 1, the side of the water passage 2 is defined as the rear.

[0012] The frame body 3 has a frame main body 5 having a circular water passage hole 2 in the lower center, a bottom 6 provided below the frame main body 5 to restrict the movement of the door body 4, and a pair of guide grooves 7, 7 extending vertically facing each other on both the left and right sides of the frame main body 5. As shown in Figures 5 to 7, the door body 4 includes a plate-shaped door main body 8, a circular cover 9 that directly blocks the water passage hole 2, and a pair of pressing parts 10, 10 provided on the left and right sides to press the door body 4 forward when the water passage hole 2 is closed, and is held between the guide grooves 7, 7 so as to be vertically movable.

[0013] The water gate device 1 also has a lifting shaft 11 and a support plate 13 having a lifting bearing 12 that supports the lifting shaft 11. The lifting shaft 11 is supported by the lifting bearing 12 and is connected to the gate body 4. The gate body 4 moves up and down by rotating the lifting shaft 11 through the operation of a handle (not shown). The gate body 4 moves up and down in conjunction with the rotation of the lifting shaft 11. The support plate 13 is a member that is installed in an irrigation channel or the like, and fixes the water gate device 1 in place.

[0014] The cover 9 is a circular member provided at the rear of the door main body 8, and is positioned so as to cover the water hole 2 when the door body 4 abuts against the bottom 6, that is, when the door body 4 is at its lowest position. In addition, a water stop rubber 14 is provided on the outer periphery of the cover 9 to adequately close the water hole 2 by coming into close contact with the periphery of the water hole 2 when closing the water hole 2.

[0015] Each pressing portion 10 is made up of rotating members 15, wedge members 16, and a link member 17. The pressing portions 10 have the same configuration and are symmetrical, so that only one pressing portion 10 will be described below.

[0016] The rotating members 15, 15 are plates that are V-shaped in side view with a middle portion protruding downward, and are attached so as to penetrate the front and rear of the door main body 8. The rotating members 15, 15 are attached so as to be rotatable at their rear end portions about shaft portions 18, 18 of the door main body 8, and wedge members 16, 16 are attached to their front end portions. The lower rotating member 15 is attached so as to penetrate a groove portion 19a that is open downward, and the upper rotating member 15 is attached so as to penetrate a through-hole 19b.

[0017] The wedge members 16, 16 are plates having one end attached to the rotating members 15, 15 and the other end protruding into the guide groove 7, and are L-shaped in plan view. In the wedge members 16, 16, the portions protruding into the guide groove 7 are locking portions 16a, 16a. In conjunction with the rotation of the rotating members 15, 15, the wedge members 16, 16 change the position of the locking portions 16a, 16a. The link member 17 is a plate that connects the rotating members 15, 15 provided above and below, and the link member 17 allows the rotating members 15, 15 to rotate in unison with each other.

[0018] The operation of the water gate device 1 will now be described. As shown in FIG. 8, when the door body 4 is located at the top, that is, when the water passage hole 2 is in an open state, the weight of the pressing part 10 rotates the front end of the rotating members 15, 15 around the shaft part 18 so as to be located at the bottom. When the upper rotating member 15 rotates downward, it hits the lower part of the through hole 19b, and the downward movement is restricted. Similarly, the downward movement of the lower rotating member 15 connected by the link member 17 is restricted. At this time, the locking parts 16a, 16a are positioned so as to be parallel to the door main body part 8. Therefore, the door body 4 can move up and down without being locked by the locking parts 16a, 16a.

[0019] Next, as shown in FIG. 9, when the door body 4 moves to the lower limit position, the rear end of the lower rotating member 15 abuts against the bottom 6, and the front end of the lower rotating member 15 rotates about the shaft 18 so as to be lifted upward. The upper rotating member 15 also rotates in conjunction with the link member 17 so that the front end is lifted upward like the lower rotating member 15. Then, the wedge members 16, 16 attached to the front ends of the rotating members 15, 15 are interlocked, so that the locking portions 16a, 16a assume a pressing position inclined in a direction to widen the gap between the guide groove 7 and the door body 8. In this way, the door body 8 is pressed backward, and the cover body 9 is pressed so that the water stop rubber 14 is in close contact with the periphery of the water passage hole 2, and the water passage hole 2 is closed by the door body 4.

[0020] According to the above embodiment of the sluice gate device 1, the sluice gate device 1 includes a frame body 3 having a water hole 2 and a pair of guide grooves 7, 7 extending vertically opposite each other on both the left and right sides of the water hole 2, and a door body 4 that is held between the guide grooves 7, 7 so as to be able to move vertically and open and close the water hole 2. The door body 4 is provided with a plate-shaped door main body portion 8, a lid body 9 provided at the rear of the door main body portion 8 and covering the water hole 2 at the lowermost position of the door body 4, and pressing portions 10, 10 provided in front of the door main body portion 8 and pressing the door main body portion 8 toward the water hole 2 at the lowermost position to seal the water hole 2 with the lid body 9. Each pressing portion 10 includes rotating members 15, 15 rotatable about an axis portion 18, and wedge members 16, 16 whose locking portions 16a are located in the guide grooves 7, 7 and are interlocked with the rotation of the rotating members 15, 15, and when the rotating members 15, 15 rotate so that they abut against the bottom portion 6 at the lowest position and their rear ends are raised, the wedge members 16, 16 change their posture in conjunction with the rotation, and the locking portions 16a, 16a push apart the gap between the door main body portion 8 and the inner surface of the guide groove 7 to press the door main body portion 8 rearward, thereby blocking the water passage hole 2 with the lid body 9. Therefore, it is possible to block the water passage hole 2 only with the configuration provided on the door body 4, without providing a separate part such as a wedge on the frame body 3. In addition, the engaging portion 16a of the wedge member 16 tilts, and a force acts to spread apart the gap between the door main body portion 8 and the inner surface of the guide groove 7, making it possible to press the door body 4 backward, i.e., toward the water passage hole 2, with sufficient force.

[0021] Next, a door body 20 which is a modification of the door body 4 will be described. Fig. 10 is a front perspective view showing the door body 20. Fig. 11 is a reference side view enlarging the periphery of the rotating member 15 in Fig. 10. Note that the same reference numerals as in Figs. 1 to 9 are used for configurations that have the same effects as those shown in Figs. 1 to 9, and descriptions thereof will be omitted.

[0022] 10 and 11, the pressing portions 21, 21 provided on the door body 20 are provided on both the left and right ends of the front of the door main body 8. Each pressing portion 21 is composed of rotating members 15, wedge members 16, a link member 17, and rotation suppressing portions 22. The wedge members 16 at the centers of the pressing portions 21, 21 are connected by a wedge connecting member 23 supported by a support member 24.

[0023] The pressing portion 21 provided on the right side will be described below. The pressing portion 21 provided on the left side has the same configuration as the pressing portion 21 provided on the right side, and is symmetrical to the pressing portion 21 provided on the right side, so a description thereof will be omitted. The rotating members 15, 15, 15 are attached to the right side of the door main body 8 so as to be aligned vertically so as to be rotatable about the shaft portions 25, 25, 25. A wedge member 16 is fixed to each rotating member 15, and the rotating members 15 are connected to each other by a link member 17. The rotation suppressing portion 22 is a member provided to restrict the downward movement of each rotating member 15, and restricts the downward rotation by being sandwiched between the door main body 8 and each rotating member 22 when each rotating member 15 rotates downward about the shaft portion 25.

[0024] The door body 20 is easy to assemble because the pressing portion 21 is provided in front of the door main body 8. In addition, the central wedge members 16, 16 are connected by the wedge connecting member 23, so that the left and right misalignment of the pressing portions 21, 21 is reduced.

[0025] The floodgate device according to the present invention is not limited to the above-described embodiment, and the overall configuration of the floodgate device as well as the configuration of the pressing portion, etc. can be appropriately modified as necessary.

[0026] For example, the number of rotating members 15 and wedge members 16 provided may be changed as required. In the present embodiment, the wedge member 16 is a plate-shaped member, but the shape may be changed as appropriate. For example, a cam-shaped rod may be used as the wedge member. [Explanation of symbols]

[0027] DESCRIPTION OF SYMBOLS 1··water gate device, 2··water passage hole, 3··frame body, 4, 20·door body, 5··frame main body, 6··bottom (receiving portion), 7··guide groove, 8··door main body, 9··lid body, 10, 21··pressure portion, 11··lifting shaft, 12··lifting bearing, 13··support plate, 14··waterstop rubber, 15··rotating member, 16··wedge member, 16a··locking portion, 17··link member, 18, 25··shaft portion, 19a··groove portion, 19b··through hole, 22··rotation suppressing portion, 23··wedge connecting member, 24··support member.

Claims

1. A water gate device comprising: a frame body having a water passage hole and a pair of guide grooves extending vertically opposite each other on both the left and right sides of the water passage hole; and a door body that is held between the guide grooves so as to be vertically movable and capable of opening and closing the water passage hole, The door body is provided with a plate-shaped door main body portion, a lid body provided on the water passage hole side of the door main body and covering the water passage hole at a lower limit position of the door body, and a pressing portion provided on the opposite side of the water passage hole of the door main body portion and pressing the door main body portion toward the water passage hole side at the lower limit position to seal the water passage hole with the lid body, The pressing portion includes a rotating member provided on both the left and right sides of the door main body portion and rotatable about an axis in the left-right direction, and a wedge member at least a portion of which is located within the guide groove and is interlocked with the rotation of the rotating member; This water gate device is characterized in that the rotating member rotates by abutting against a receiving portion provided on the frame body at the lowermost position, and the wedge member changes its posture in conjunction with the rotation of the rotating member, and at the lowermost position, it assumes a pressing posture in which it pushes apart the space between the door main body and the inner surface of the guide groove to press the door main body toward the water hole.

2. The water gate device described in claim 1, characterized in that the rotating member is a V-shaped plate in side view, with an intermediate portion protruding downward, one end rotatably attached to the door main body, and the wedge member attached to the other end, and at the lower limit position, the intermediate portion abuts the receiving portion and rotates around the one end, thereby changing the wedge member to the pressing position.

3. The water gate device described in claim 2, characterized in that the wedge member is a plate body that is L-shaped in a planar view, one end of which is attached to the rotating member and the other end of which protrudes into the guide groove, and at the lower limit position, the other end is in the pressing posture inclined in a direction that pushes apart the space between the guide groove and the door main body.

4. A water gate device as described in any one of claims 1 to 3, characterized in that the rotating members and the wedge members are provided in multiples on both the left and right sides of the door main body, and each of the rotating members arranged vertically on the left and right sides is connected to each other by a link member so that they can rotate in sync.

Images