Drainage gate and drainage gate control system

Abstract

To provide a drainage gate that allows for easy fixing of the weir plate. [Solution] The drainage gate 1 has a weir plate 2 with a V-shaped notch Q at the top, which adjusts the amount of water dammed by its height, a frame body 3 that holds the weir plate 2 so that it can move up and down, a spindle 4 that is connected to the weir plate 2 and rotates to raise and lower the weir plate 2, a motor 5 that is connected to the spindle 4 and rotates the spindle 4, and a control device 5 that controls the motor 5. The control device 5 operates the motor 5 to raise and lower the weir plate 2 between a first position in which the entire weir plate 2 is located below the surface of the field and a second position in which at least a part of the weir plate 2 is located above the surface of the field.

Description

【Technical Field】 【0001】 The present invention relates to a drainage gate installed between a paddy field and a ridge for controlling the water level of the paddy field and the amount of water flowing from the paddy field to the ridge side, and a drainage gate control system for controlling the drainage gate. 【Background Art】 【0002】 Conventionally, a drainage gate that fixes a weir plate by earth pressure to adjust the water level is known. For example, Patent Document 1 describes a drainage gate in which a pressure receiving plate is inclined backward with a pressure receiving plate support groove as a fulcrum by water pressure and / or earth pressure and presses against it to hold a water level adjustment plate at a desired water level adjustment height. 【Prior Art Documents】 【Patent Documents】 【0003】 【Patent Document 1】 Japanese Patent Application Laid-Open No. 2012-136879 【Summary of the Invention】 【Problems to be Solved by the Invention】 【0004】 However, since the drainage gate of Patent Document 1 has a configuration in which the weir plate is fixed by water pressure and / or earth pressure, there is a problem that the position of the weir plate cannot be easily changed after the positioning of the weir plate. Further, there is a problem that it is necessary to perform work manually on site when changing the position of the weir plate. 【0005】 Therefore, an object of the present invention is to provide a drainage gate that enables easy change of the position of a weir plate using a spindle, and a drainage gate control system for remotely controlling the drainage gate. 【Means for Solving the Problems】 【0006】 To achieve the above objective, the invention described in claim 1 is a drainage gate installed in a basin provided between a rice paddy and a levee, comprising a weir plate with a V-shaped notch at its upper part, a frame body that holds the weir plate so that it can move up and down, and a spindle connected to the weir plate so that the weir plate moves up and down by rotating, wherein the weir plate moves up and down by the rotational movement of the spindle, and is characterized in that the weir plate moves up and down between a first position in which the entire weir plate is located below the surface of the rice paddy and a second position in which at least a part of the weir plate is located above the surface of the rice paddy. Furthermore, the invention described in claim 2 is characterized in that, in the invention described in claim 1, a motor connected to the spindle to rotate the spindle and a control device for controlling the operation of the motor are provided. Furthermore, the invention described in claim 3 includes the drainage gate described in claim 2, an operating terminal, a control device for the drainage gate, and a server that can communicate with the operating terminal via the Internet, wherein the server has a first position and a maximum value for a second position corresponding to the drainage gate stored in advance, and the operating terminal can communicate with the server to instruct the control device to raise or lower the weir plate to any position between the first position and the maximum value, and the control device that receives the instruction raises or lowers the weir plate to the position corresponding to the instruction. Furthermore, the invention described in claim 4 is characterized in that, in the invention described in claim 3, it is capable of communicating with a plurality of drainage gates, the server has in advance stored the maximum values ​​of a first position and a second position corresponding to each drainage gate, and the operating terminal can communicate with the server to select any drainage gate and instruct the control device to raise or lower the weir plate to any position between the first position and the maximum value corresponding to the selected drainage gate. [Effects of the Invention] 【0007】 According to the invention described in claim 1, since the weir plate is made movable up and down by a spindle, the positioning of the weir plate can be easily performed. According to the invention described in claim 2, since the spindle is rotated by a motor to raise and lower the weir plate, there is no need to manually adjust the weir plate. According to the inventions described in claims 3 and 4, the raising and lowering operation of the weir plate of the drainage gate can be controlled remotely by an operating terminal, making it possible to position the weir plate of the drainage gate without having to go to the site. [Brief explanation of the drawing] 【0008】 [Figure 1] This is a front view of the drainage gate according to the present invention. [Figure 2] This is a rear view of the drainage gate according to the present invention. [Figure 3] This is a side view of the drainage gate according to the present invention. [Figure 4] This is a front perspective view of the drainage gate according to the present invention. [Figure 5] This is a rear perspective view of the drainage gate according to the present invention. [Figure 6] Figure 4 is a front perspective view showing the weir plate in an upward position. [Figure 7] Figure 5 is a rear perspective view showing the weir plate in an upward position. [Figure 8] This is a reference side view showing the installation status of the drainage gate. [Figure 9] This is a front view showing the weir plate and connecting members. [Figure 10] This is a reference front view showing the weir board in its first position. [Figure 11] This is a reference front view showing the weir board in the second position. [Figure 12] This is a diagram illustrating the drainage gate control system according to the present invention. [Modes for carrying out the invention] 【0009】 Hereinafter, an example of an embodiment of the present invention will be described with reference to the drawings. Figures 1 to 5 show a drainage gate 1 according to the present invention, where Figure 1 is a front view, Figure 2 is a rear view, Figure 3 is a side view, Figure 4 is a front perspective view, and Figure 5 is a rear perspective view. In Figures 1 to 5, the weir plate 2 is positioned as far down as possible. Figures 6 and 7 are perspective views showing the state in which the weir plate 2 has moved upward in Figures 4 and 5. Figure 8 is a reference side view showing the installed state of the drainage gate 1. Figure 9 is a front view showing the weir plate 2 and the connecting member 21. Figures 10 and 11 are front views of the installed state of the drainage gate 1, where Figure 10 shows the state in which the weir plate 2 is in the first position, and Figure 11 shows the state in which the weir plate 2 is in the second position. In Figures 10 and 11, the manhole N is omitted. Figure 12 is a configuration diagram showing a drainage gate control system 100 according to the present invention. In the drawings, the rice paddy L side is the front, and the levee M side is the rear. 【0010】 The configuration of the drainage gate 1 will be explained with reference to Figures 1 to 11. As shown in Figures 1 to 7, the drainage gate 1 comprises a weir plate 2, a frame body 3 that holds the weir plate 2 so that it can move up and down, a spindle 4 connected to the weir plate 2 and rotating to perform a vertical movement, a motor 5 that rotates the spindle 4, and a control device 6 that controls the motor 5. As shown in Figure 8, the drainage gate 1 is installed in a box N, such as a concrete box, provided on the slope between the rice paddy L and the levee M. The drainage gate 1 controls the amount of water dammed from the rice paddy L and the amount of water drained into a drainage channel (not shown) provided inside the levee M by moving the weir plate 2 up and down to change its position as appropriate. 【0011】 As shown in Fig. 9, the weir plate 2 is a plate-shaped member provided with a notch Q in a V shape in the front view at the upper part. Further, a connecting member 21 for connecting upward to the spindle 4 is extended at the upper end of the weir plate 2. The connecting member 21 is composed of connecting column parts 22, 22 extending upward relatively facing each other from the left and right ends at the upper end of the weir plate 2, and a plate-shaped connecting plate part 23 provided from the upper end of one connecting column part 22 across to the upper end of the other connecting column part 22. The dimensions and shape of the connecting member 21 are determined so that an opening is formed through which water from the paddy field L can be sufficiently drained to the ridge side by the weir plate 2 and the connecting member 21. Further, a stopper 24 is provided across the left and right below the notch Q and on the front side of the weir plate 2. The stopper 24 supports the front-rear direction of the weir plate 2 by being sandwiched at both left and right ends by sub-guide grooves 35, 35 described later. Also, the shape and position of the stopper 24 are determined in order to regulate the lower end of the weir plate 2 from going below the lower end of a frame main body part 31 described later. 【0012】 The frame body 3 is composed of a frame main body part 31, a pair of guide parts 32, 32 extending vertically and facing each other on both left and right sides of the frame main body part 31, and a frame support body 33 holding the upper ends of the guide parts 32, 32, and is configured to have a rectangular opening surrounded by respective members. The frame main body part 31 is a plate-shaped member located below the paddy field surface O when the drainage gate 1 is installed. Further, the upper end 31a of the frame main body part 31 is configured so that the stopper 24 is locked thereto. 【0013】 Each guide part 32 is a member provided to extend upward from the lower end of the frame main body part 31 to above the upper end of the frame main body part 31, and has vertical guide grooves 34 and sub-guide grooves 35 on the opposing surfaces thereof. The frame support 33 is composed of a support plate 36 provided horizontally from the upper end of one guide part 32 to the upper end of the other guide part 32, and a top plate 37 extending horizontally from the upper end of the support plate 36 toward the ridge side. The guide grooves 34, 34 are provided behind the sub-guide grooves 35, 35. Then, by sandwiching the left and right ends of the weir plate 2 with the guide grooves 34, 34 and sandwiching the left and right ends of the stopper 24 with the sub-guide grooves 35, 35, the weir plate 2 is held to be vertically movable on the frame body 3. Incidentally, the weir plate 2 is held to be positioned in front of the frame main body part 31. 【0014】 Further, the frame body 3 is provided with a pressing part 38 for pressing the weir plate 2 from the ridge side. The pressing part 38 is a plate-like member provided across from one guide part 32 to the other guide part 32 at a position where the upper end of the frame main body part 31 and the lower half of the pressing part 38 overlap in a front view. Then, the weir plate 2 is supported from the ridge M side by the pressing part 38 and screws (not shown) provided on the pressing part 38. 【0015】 The spindle 4 is composed of a shaft part 41, a bearing part 42 for bearing the shaft part 41, and a lifting bearing 43 for bearing the shaft part 41 and moving up and down along the shaft part 41 as the shaft part 41 rotates. The upper part of the shaft part 41 is pivotally supported and held by the bearing part 42, and the lower part is pivotally supported and held by the lifting bearing 43, and is directly connected to the motor 5. The bearing part 42 is provided on the top plate 37 of the frame body 3. The lifting bearing 43 is provided on the connecting plate part 23 of the connecting member 21 extended from the weir plate 2. Further, since the lifting bearing 43 is screwed with the shaft part 41 to pivotally support the shaft part 41, it moves up and down along the shaft part 41 in accordance with the direction in which the shaft part 41 rotates. 【0016】 Motor 5 is connected to the shaft portion 41 of spindle 4 and rotates under the control of control device 6. Control device 6 is electrically connected to motor 5 and controls the raising and lowering of weir plate 2 by controlling the rotational movement of motor 5. Control device 6 has a control CPU that controls control device 6 and motor 5, a storage unit that stores various information, and a communication unit for communicating with the outside. In this embodiment, motor 5 and control device 6 are housed together in a control box 50 and installed on the upper part of drainage gate 1. When a user sends an instruction to control device 6, control device 6 starts controlling motor 5. Instructions to control device 6 may be made by an operation terminal 102 as described in the drainage gate control system 100 described later, or by an operation unit separately provided on control device 6. Examples of operation units separately provided on control device 6 include a lifting / lowering button and an operation panel. 【0017】 The drain gate 1, configured in this way, operates as follows. The drainage gate 1 is installed in a basin N located between the rice paddy L and the levee M. At this time, the drainage gate 1 is installed such that when the weir plate 2 is positioned where downward movement is restricted by the stopper 24, the entire weir plate 2 is located below the surface of the paddy field O. The control device 6 operates the motor 5, causing the shaft portion 41 of the spindle 4 to rotate, which in turn causes the lifting bearing 43 and the weir plate 2, which is connected to the lifting bearing 43 via a connecting member 21, to move up and down. At this time, the lifting and lowering of the weir plate 2 occurs between a first position where the entire weir plate 2 is located below the surface of the paddy field O, as shown in Figure 10, and a second position where at least a part of the weir plate 2 is located above the surface of the paddy field O, as shown in Figure 11. 【0018】 Therefore, the rotation of the spindle 4 causes the weir plate 2 to move up and down, making it easy to position the weir plate 2. In addition, the notch Q makes it possible to fine-tune the water level in the rice paddy L. 【0019】 Next, the drainage gate control system 100, which remotely controls the drainage gate 1 described above, will be explained with reference to Figure 12. Components that exhibit the same effects as those described above are denoted by the same reference numerals and their explanations are omitted. As shown in Figure 12, the drainage gate control system 100 is configured by connecting a server 101, an operating terminal 102, a plurality of drainage gates 1,1..., and a control device 6 provided at each drainage gate 1 via the Internet I. 【0020】 Server 101 is an IoT server, and is either a cloud-based server or a physical computer server. Server 101 has a server CPU, server storage means controlled by the server CPU, and server communication means controlled by the server CPU. Server 101 also pre-stores the first position in which the weir plate 2 of each drainage gate 1 can be raised or lowered, and the maximum value of the second position (hereinafter simply referred to as "maximum value") as movable distance information, along with the identification information of the corresponding drainage gate 1. The movable distance information is stored during the initial setup described later. 【0021】 The operating terminal 102 connects to the server 101 via the internet I, and the user operates it to send instructions to the control device 6 of any drain gate 1 via the server 101, thereby operating the target drain gate 1. Examples of operating terminals 102 include personal computers, smartphones, and tablets. After installing a dedicated application, the operating terminal 102 connects to the internet I, enabling connection to the server 101 and operation on the server 101. 【0022】 Each drainage gate 1 is equipped with a control device 6. The control device 6 is constantly connected to a server 101 via the Internet I. When the control device 6 receives an operation instruction from an operation terminal 102 via the server 101, it performs a lifting or lowering operation corresponding to the operation instruction. 【0023】 This explains the initial setup. Initial setup is performed when the drainage gate 1 is installed. First, the drainage gate 1 is installed with the weir plate 2 at the lower limit position restricted by the stopper 24 and below the field surface O. In this state, the control device 6 and the operation terminal 102 are connected by wire or wireless, and the current position of the weir plate 2 is stored in the control device 6 as the origin, i.e., the first position, by operating the operation terminal 102. After that, the upper limit value, i.e., the maximum value, for the upward movement of the weir plate 2 is input by the operation terminal 102 and stored in the control device 6. At this time, the input maximum value may be calculated according to the dimensions of the drainage gate 1, or calculated according to the size of the field L and the levee M, or it may be measured by actually operating the drainage gate 1. After the movable distance information is stored in the control device 6 in this way, the operation terminal 102 sends an instruction to the control device 6 to return to the normal state. The normal state is a state in which the control device 6 is constantly connected to the server 101 via the Internet I, and performs the raising and lowering of the weir plate 2 of the drainage gate 1 according to the operation instructions sent from the server 101 to the control device 6 as appropriate. When the control device 6 connects to the server 101 to transition to the normal state, it transmits the identification information of the drainage gate 1 it controls and the stored movable distance information. When the server 101 receives the identification information and the movable distance information, it stores the identification information and the movable distance information in association with each other. 【0024】 The drainage gate control system 100 configured in this way operates as follows. The user operates the control terminal 102 to select an arbitrary drainage gate 1 on the server 101. Then, the user inputs the position from the first position to which they want to move the weir plate 2. At this time, the movable distance information corresponding to the selected drainage gate 1 is displayed. The server 101 may also be controlled to prevent inputs greater than the maximum value, or it may be controlled to treat inputs greater than the maximum value as the maximum value, or it may be controlled to invalidate inputs greater than the maximum value. After inputting the position, the user then uses the control terminal 102 to instruct the selected drainage gate 1 to operate. The server 101, having received the instruction from the control terminal 102, then notifies the control device 6 corresponding to the selected drainage gate 1 to raise or lower the weir plate 2 to the input position. Finally, the control device 6, having received the notification from the server 101, operates the motor 5 according to the instruction to raise or lower the weir plate 2. 【0025】 Therefore, the weir plate 2 of the drainage gate 1 can be raised and lowered by remote operation using the control terminal 102, making it easy to adjust the water level of the rice paddy L without having to go to the site. Furthermore, even in severe weather, the water level of the rice paddy L can be adjusted from a safe location, allowing it to function as a rice paddy dam. 【0026】 It should be noted that the drainage gate and drainage gate control system according to the present invention are not limited in any way to the embodiments described above, and the overall configuration of the drainage gate and drainage gate control system, as well as the configuration of the spindle and control device, can be changed as needed. 【0027】 For example, in this embodiment, the spindle 4 is rotated by a motor 5, but it is also possible to connect a handle instead of the motor 5 and rotate the spindle 4 by operating the handle. [Explanation of Symbols] 【0028】 1. Drainage gate, 2. Weir plate, 3. Frame body, 4. Spindle, 5. Motor, 6. Control device, 21. Connecting member, 22. Connecting column section, 23. Connecting plate section, 24. Stopper, 31. Frame main body section, 32. Guide section, 33. Frame support, 34. Guide groove, 41. Shaft section, 42. Bearing section, 43. Lifting bearing, 50. Control box, I. Internet, L. Rice paddy, M. Levee, N. Box, O. Paddy field surface, Q. Cut.

Claims

[Claim 1] A drainage gate installed in a basin between a rice paddy and a levee, The weir includes a weir plate with a V-shaped notch at the top, a frame body that holds the weir plate so that it can move up and down, and a spindle connected to the weir plate so that the weir plate moves up and down when it rotates. The drainage gate is characterized in that the weir plate moves up and down between a first position in which the entire weir plate is located below the surface of the field and a second position in which at least a part of the weir plate is located above the surface of the field, by the rotational movement of the spindle. [Claim 2] A motor connected to the spindle to rotate the spindle, The drainage gate according to claim 1, further characterized in that it is provided with a control device for controlling the operation of the motor. [Claim 3] The drainage gate described in claim 2, an operating terminal, and a server that can communicate with the control device of the drainage gate and the operating terminal via the Internet, The server has pre-stored maximum values ​​for the first position and the second position corresponding to the drainage gate. The operating terminal can communicate with the server to instruct the control device to raise or lower the weir plate to any position between the first position and the maximum value, A drainage gate control system characterized in that the control device, upon receiving the instruction, moves the weir plate up or down to a position corresponding to the instruction. [Claim 4] It is capable of communicating with multiple drainage gates, The server has in advance stored the maximum values ​​of the first position and the second position corresponding to each drain gate for each drain gate. The drainage gate control system according to claim 3, characterized in that the operating terminal can communicate with the server to select any drainage gate and instruct the control device to raise or lower the weir plate to any position between the first position and the maximum value corresponding to the selected drainage gate.

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