Control device and water supply device

Abstract

To provide a control device and the like that can control the water supply from a water supply unit and can easily open and close a partition in a short time even if an operating unit stops rotating by driving.SOLUTION: A control device rotates an operating unit connected to a partition, thereby rotating the operating unit of a water supply unit, which opens and closes a water supply channel. The control device includes: a base; a drive unit; a control unit that controls driving of the drive unit; a drive shaft whose axis is parallel to a predetermined direction, and that rotates around its axis by driving of the drive unit; a driven shaft whose axis is parallel to the predetermined direction and that is provided on the base so as to be rotatable around its axis; a first transmission unit that rotates one of the drive shaft and driven shaft in response to the rotation of the other; a moving unit that is provided on the base so as to be movable in the predetermined direction; an output unit that is detachable from the operating unit and is provided on the moving unit so as to be rotatable around the predetermined direction; and a second transmission unit that rotates one of the driven shaft and the output unit in response to the rotation of the other, wherein the output unit, the moving unit, and the second transmission unit move together in the predetermined direction.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a control device for controlling water supply from a water supply unit and a water supply device including the same. [Background technology]

[0002] For water supply to farm fields, a water supply device (water supply unit) is used that adjusts the water supply (flow rate) in the water supply channel by manually rotating an operating unit connected to a partition that separates the water supply channel. Patent Document 1 discloses a control device that rotates an operating unit of such a water conveying device using a drive unit and controls the drive unit, as well as a water conveying device equipped with the control device. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Publication No. 2021-122240 Summary of the Invention [Problem to be solved by the invention]

[0004] In the case of the above-mentioned control device and water supply device, if the operating part stops rotating due to the drive part for some reason, in order to adjust the water supply from the water supply part, it is necessary to remove the control device from the water supply part, manually rotate the operating part of the water supply part to open and close the partition, and then reattach the control device to the water supply part, which is a time-consuming and labor-intensive process.

[0005] The present invention aims to provide a control device that can control the water supply from the water supply section and can easily open and close the partition in a short time even if the operating section no longer rotates due to driving, and a water supply device equipped with the same. [Means for solving the problem]

[0006] The control device is a device that rotates the operating part of the water supply part, which opens and closes the water supply channel by rotating the operating part connected to the partition, and is equipped with a base, a driving part provided on the base, a control part that controls the driving of the driving part, a drive shaft whose axis is parallel to a predetermined direction and rotates around its axis when driven by the driving part, a driven shaft whose axis is parallel to the predetermined direction and is provided on the base so as to be rotatable around its axis, a first transmission part that rotates one of the drive shaft and the driven shaft in conjunction with the rotation of the other, a moving part that is provided on the base so as to be movable in a predetermined direction, an output part that is attachable to and detachable from the operating part and is provided on the moving part so as to be rotatable around a predetermined direction, and a second transmission part that rotates one of the driven shaft and the output part in conjunction with the rotation of the other, and the output part, the moving part, and the second transmission part move together in the predetermined direction.

[0007] The first transmission unit includes an intermediate shaft whose axis is parallel to a predetermined direction and is provided on a base so as to be rotatable around the axis; a first intermediate transmission unit that rotates one of the drive shaft and the intermediate shaft in conjunction with rotation of the other; a second intermediate transmission unit that rotates one of the intermediate shaft and the driven shaft in conjunction with rotation of the other; and a torque limiter that cuts off the transmission of rotation between the drive shaft and the driven shaft when a torque exceeding a predetermined torque is applied.

[0008] The torque limiter is provided on the intermediate shaft, the first intermediate transmission part is a pair of gears that mesh with each other, and includes a drive gear provided on the drive shaft and a first intermediate gear provided on the intermediate shaft, and the second intermediate transmission part is a pair of gears that mesh with each other, and includes a second intermediate gear provided on the torque limiter and a driven gear provided on the driven shaft, and when torque exceeding a predetermined torque acts on the torque limiter, the torque limiter blocks the transmission of rotation from the second intermediate gear to the intermediate shaft.

[0009] The second transmission part is a gear that meshes with each other and comprises a moving gear and an output gear, the moving gear being movable in accordance with the movement of the moving part and being mounted on the driven shaft so as to be rotatable in accordance with the rotation of the driven shaft, and the output gear being mounted on the output part.

[0010] In the control device, the first transmission unit may include an intermediate shaft whose axis is parallel to a predetermined direction and is provided on the base portion so as to be movable in the predetermined direction and rotatable about its axis, a drive gear that is a gear provided on the drive shaft, a first intermediate gear that is a gear provided on the intermediate shaft, and a driven gear that is a gear provided on the driven shaft. In this case, the first transmission unit is switched, by movement of the intermediate shaft, between a state in which the first intermediate gear meshes with the drive gear and the driven gear, and a state in which the first intermediate gear meshes with the driven gear but not with the drive gear.

[0011] The control device may also include a positioning unit that determines the position of the intermediate shaft relative to the base, and the positioning unit may include a groove that is annularly provided in the circumferential direction of the intermediate shaft and a plunger that is provided in the base. In this case, the plunger may have a tip end and an elastic body, and the tip end may be biased outward by the elastic body in a direction perpendicular to the predetermined direction, so that the tip end can be fitted into the groove.

[0012] The control device may also have grooves at positions where the tip of the plunger fits when the first intermediate gear is engaged with the drive gear and the driven gear, and where the tip of the plunger fits when the first intermediate gear is not engaged with the drive gear but is engaged with the driven gear.

[0013] The water conveying device includes a control device and a water conveying unit. The output unit is attached to the operation unit.

[0014] The water conveying device includes a communication unit that communicates with an external device, and a control unit that controls the driving of the drive unit based on instructions from the external device. [Effects of the Invention]

[0015] The control device and the water supply device can control the water supply from the water supply unit, and can easily open and close the partition in a short time even if the operating unit is no longer rotated by the drive. [Brief explanation of the drawings]

[0016] [Figure 1] FIG. 2 is a front view showing the inside of the main body of the control device according to the embodiment. [Figure 2] FIG. 2 is a side view showing the inside of a main body of the control device according to the embodiment. [Figure 3] FIG. 2 is a partial cross-sectional front view showing the inside of the main body. [Figure 4] FIG. 2 is a partial cross-sectional side view showing the inside of the main body. [Figure 5] FIG. 2 is a cross-sectional view taken along line VV in FIG. [Figure 6] FIG. 6 is a cross-sectional view taken along line VI-VI in FIG. [Figure 7] FIG. 7 is a cross-sectional view taken along line VII-VII in FIG. [Figure 8] FIG. [Figure 9] FIG. 2 is a partial cross-sectional front view showing the water conveying device with the partition closed. [Figure 10] FIG. 2 is a partial cross-sectional front view showing the water conveying device with the partition open. [Figure 11] FIG. 1 is a diagram illustrating a configuration of a farm field management system. [Figure 12] FIG. 10 is a partial cross-sectional side view showing a first transmission unit of a control device according to another embodiment, in which the intermediate shaft is in a first position. [Figure 13] FIG. 10 is a partial cross-sectional side view showing a first transmission unit of a control device according to another embodiment, in which the intermediate shaft is in a second position. DETAILED DESCRIPTION OF THE INVENTION

[0017] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. The control device 1 is a device that controls water supply from a water supply unit 400 that opens and closes a water supply channel 420 by rotating an operation unit 450 connected to a partition 460.

[0018] The water supply unit 400 may be any device that adjusts the water supply (flow rate) of the water supply channel 420, such as a valve device or a water gate. The water supply channel 420 is a path for water, such as a water supply channel of a valve device or an opening of a water gate. The partition 460 is used to open and close the water supply channel 420. The partition 460 is, for example, a valve of a valve device or a partition of a water gate. In this embodiment, the predetermined direction is the up-down direction, but it may be any direction.

[0019] The control device 1 of this embodiment includes a main body 2 and a separate body 200. As shown in FIGS. 1 to 4, the main body 2 includes a base 10, a moving section 40, a driving section 50, a driving shaft 60, a driven shaft 70, a first transmission section 80, an output section 90, a second transmission section 100, and a main body case 110.

[0020] As shown in FIGS. 1 to 7 , the base 10 includes a first base 20, a second base 30, and a pillar 12. The first base 20 is plate-shaped, with its plate surfaces perpendicular to the vertical direction. The second base 30 is plate-shaped and slightly smaller than the first base 20. The second base 30 is parallel to the first base 20 and located above it. The first base 20 and the second base 30 are connected by a pair of pillars 12 spaced apart in the left-right direction. The pillars 12 are cylindrical. The pillars 12 are detachable from the first base 20 and the second base 30. With their axes parallel to the vertical direction, the lower end of the pillar 12 is connected to the first base 20 and the upper end of the pillar 12 is connected to the second base 30 by screws or the like (not shown).

[0021] The moving unit 40 is provided on the base 10 so as to be movable in a predetermined direction. As shown in FIGS. 1 to 4 and 7, the moving unit 40 is plate-shaped, with the plate surface perpendicular to the vertical direction. The moving unit 40 has a pair of post holes 41. The post holes 41 are holes with circular cross sections that penetrate the moving unit 40 in the vertical direction. The post holes 41 have approximately the same diameter as the post 12, allowing the post 12 to pass through them. The post holes 41 are spaced apart in the left-right direction, and the spacing between them is the same as the spacing between the pair of post 12. A post 12 passes through each post hole 41. The moving unit 40 is movable in the vertical direction along the post 12 and a driven shaft 70, which will be described later.

[0022] The drive unit 50 drives the drive shaft 60 to rotate, and is provided on the base 10. As shown in FIGS. 1 to 4, in this embodiment, a motor 53 with a reducer 51 is used as the drive unit 50. The drive unit 50 is attached to the bottom surface of the second base 30. The drive unit 50 is provided with an encoder (not shown) that measures the rotation of a drive shaft (not shown) of the drive unit 50. The encoder is connected to the control unit 230 (described later), and outputs a pulse signal corresponding to the rotation of the drive shaft (not shown) of the drive unit 50 to the control unit 230.

[0023] The drive shaft 60 has an axis parallel to a predetermined direction and rotates about its axis when driven by the drive unit 50. As shown in FIGS. 1 to 6 , in this embodiment, the drive shaft 60 is cylindrical. The second base 30 has a drive shaft hole 31 through which the drive shaft 60 can pass and which allows the passed drive shaft 60 to rotate. The drive shaft hole 31 penetrates the second base 30 in the vertical direction. The drive shaft hole 31 has a circular cross section and a diameter that is approximately the same as the diameter of the drive shaft 60. The drive shaft 60 is passed through the drive shaft hole 31 with its axis parallel to the vertical direction, and its lower end is rotatably connected to the reducer 51 of the drive unit 50. The drive shaft 60 rotates about its axis when driven by the drive unit 50.

[0024] The driven shaft 70 has an axis parallel to a predetermined direction and is provided on the base 10 so as to be rotatable about the axis. In this embodiment, as shown in FIGS. 1 to 7 , the driven shaft 70 includes a body portion 71 and an insertion portion 73. The body portion 71 has a regular hexagonal prism shape. The insertion portion 73 has a cylindrical shape and is coaxially connected to one end of the body portion 71. The diameter of the insertion portion 73 is smaller than the diagonal distance of the hexagon of the body portion 71.

[0025] As shown in FIGS. 3 and 4 , the first base 20, the second base 30, and the moving unit 40 each have a driven shaft hole 23, 33, 43 through which the driven shaft 70 can pass and which allows the passed driven shaft 70 to rotate. The driven shaft holes 23, 33, 43 of the first base 20, the second base 30, and the moving unit 40 are coaxially disposed and extend vertically at positions offset from the drive shaft hole 31 in a plan view. The driven shaft hole 23 of the first base 20 has a circular cross section and is approximately the same diameter as the insertion portion 73 of the driven shaft 70, allowing only the insertion portion 73 of the driven shaft 70 to pass through. The driven shaft holes 33, 43 of the second base 30 and the moving unit 40 each have a circular cross section and a diameter approximately the same as the diagonal distance of the hexagonal body portion 71, allowing the body portion 71 and insertion portion 73 of the driven shaft 70 to pass through.

[0026] The driven shaft 70 is passed through the driven shaft holes 33, 43 of the second base 30 and the moving part 40 with its axis parallel to the vertical direction, and the insertion part 73 is passed through the driven shaft hole 23 of the first base 20, and is supported on the base 10 so as to be rotatable around its axis.

[0027] The first transmission unit 80 rotates one of the drive shaft 60 and the driven shaft 70 in conjunction with the rotation of the other. In this embodiment, as shown in FIGS. 1 to 6 , the first transmission unit 80 includes an intermediate shaft 81, a first intermediate transmission unit 82, a torque limiter 85, and a second intermediate transmission unit 86. The first transmission unit 80 is located above the second base unit 30.

[0028] The intermediate shaft 81 has an axis parallel to a predetermined direction, in other words, parallel to the axes of the drive shaft 60 and the driven shaft 70, and is provided on the base 10 so as to be rotatable about its axis. As shown in FIGS. 2 and 4, the intermediate shaft 81 includes a body portion 81a and an insertion portion 81b. The body portion 81a is cylindrical. The insertion portion 81b is also cylindrical and is coaxially connected to one end of the body portion 81a. The diameter of the insertion portion 81b is smaller than the diameter of the body portion 81a.

[0029] 4, the second base portion 30 is provided with an intermediate shaft hole 35 through which the insertion portion 81b of the intermediate shaft 81 passes. The intermediate shaft hole 35 penetrates in the up-down direction at a position offset from the drive shaft hole 31 and the driven shaft hole 33 of the second base portion 30 in a plan view. The intermediate shaft hole 35 has a circular cross section and is approximately the same diameter as the insertion portion 81b of the intermediate shaft 81, allowing only the insertion portion 81b of the intermediate shaft 81 to pass through.

[0030] The intermediate shaft 81 has its axis parallel to the vertical direction, and the insertion portion 81b is passed through the driven shaft hole 33 of the second base portion 30, and is supported by the second base portion 30 so as to be rotatable around its axis.

[0031] 1 to 4 and 6, the first intermediate transmission part 82 includes a drive gear 83 provided on the drive shaft 60 and a first intermediate gear 84 provided on the intermediate shaft 81, which are gears that mesh with each other. The drive gear 83 is a spur gear, and the drive shaft 60 passes through a hole that penetrates the shaft, and the drive gear 83 is attached coaxially to the drive shaft 60. The first intermediate gear 84 is a spur gear, and the intermediate shaft 81 passes through a hole that penetrates the shaft, and the first intermediate gear 84 is attached coaxially to the intermediate shaft 81, and the drive gear 83 meshes with the drive gear 83.

[0032] The torque limiter 85 is provided on the intermediate shaft 81, and blocks the transmission of rotation between the drive shaft 60 and the driven shaft 70 when a torque exceeding a predetermined torque acts on the torque limiter 85. As shown in FIGS. 1 to 4, the torque limiter 85 includes a limiter main body 85a, a rotating portion 85b, and a locking portion (not shown). The limiter main body 85a and the rotating portion 85b are both cylindrical. The limiter main body 85a and the rotating portion 85b have holes through which the intermediate shaft 81 is passed, and the limiter main body 85a is coaxially attached to the intermediate shaft 81 above the first intermediate gear 84. The rotating portion 85b is attached to the limiter main body 85a so as to be rotatable about its axis (in the vertical direction). The locking portion locks and unlocks the rotation of the rotating portion 85b relative to the limiter main body 85a. The locking portion normally locks the rotating portion 85b, preventing the rotating portion 85b from rotating relative to the limiter body 85a. When a torque exceeding a predetermined torque acts on the torque limiter 85, the locking portion unlocks the rotating portion 85b, allowing the rotating portion 85b to rotate relative to the limiter body 85a.

[0033] 1 to 5, the second intermediate transmission part 86 is composed of gears that mesh with each other, and includes a second intermediate gear 87 provided on the torque limiter 85 and a driven gear 88 provided on the driven shaft 70. The second intermediate gear 87 is attached to the rotating part 85b of the torque limiter 85 with the intermediate shaft 81 passing through a hole that penetrates the shaft. The driven gear 88 is attached coaxially to the driven shaft 70 with the driven shaft 70 passing through a hole that penetrates the shaft, and meshes with the second intermediate gear 87.

[0034] Normally, the locking portion locks the rotation of the rotating portion 85b, allowing the intermediate shaft 81, first intermediate gear 84, torque limiter 85, and second intermediate gear 87 to rotate together. In contrast, when torque exceeding a predetermined torque acts on the torque limiter 85 via the second intermediate gear 87 due to rotation of the driven shaft 70, the locking portion unlocks the rotating portion 85b, allowing the second intermediate gear 87 to rotate relative to the limiter body 85a. As a result, even if the second intermediate gear 87 rotates due to rotation of the driven shaft 70 and the driven gear 88, the second intermediate gear 87 rotates freely relative to the limiter body 85a, and therefore, rotation is not transmitted to the intermediate shaft 81, and consequently, rotation is not transmitted to the drive shaft 60 or the drive portion 50.

[0035] The output unit 90 is detachable from the operation unit 450 of the water supply unit 400, and is provided on the moving unit 40 so as to be rotatable in a predetermined direction. As shown in FIGS. 1 to 4, the output unit 90 includes an output shaft 91 and a socket 93.

[0036] The output shaft 91 is cylindrical. The moving part 40 is provided with an output shaft hole 45 through which the output shaft 91 can pass and which allows the passed output shaft 91 to rotate. The output shaft hole 45 penetrates the moving part 40 in the vertical direction at a position offset from the driven shaft hole 43 of the moving part 40 in a plan view. The output shaft hole 45 has a circular cross section and its diameter is approximately the same as the diameter of the output shaft 91. The length of the output shaft 91 is approximately the same as or slightly longer than the length of the output shaft hole 45 (the thickness of the moving part 40). The output shaft 91 is passed through the output shaft hole with its axis parallel to the vertical direction.

[0037] The socket 93 is used to attach and detach the operating unit 450 so that the operating unit 450 rotates together with the output unit 90. The socket 93 is connected to the lower end side of the output shaft 91 while being in approximate contact with the bottom surface of the moving unit 40. The socket 93 is provided with a mounting hole 95 that extends upward from the bottom surface and is a hole with a hexagonal cross section. The mounting hole 95 is coaxial with the output shaft 91. The tip (upper end) of the operating unit 450 is adapted to fit into the mounting hole 95, so that the output unit 90 and the operating unit 450 can be connected coaxially via the socket 93.

[0038] As shown in FIG. 3, the first base 20 is provided below the socket 93 with an operation part hole 25 that penetrates in the vertical direction and allows at least the operation part 450 and the socket 93 to enter and exit.

[0039] The second transmission section 100 rotates either the driven shaft 70 or the output section 90 in response to rotation of the other. The second transmission section 100 includes a driven-side transmission section and an output-side transmission section. The driven-side transmission section is provided on the driven shaft 70 so as to be movable in response to movement of the moving section 40. The output-side transmission section is provided on the output section 90.

[0040] As shown in FIGS. 1 to 4 and 7, the driven-side transmission part is a moving gear 101, which is a spur gear. The moving gear 101 has a moving gear hole 103, which is a hole that passes through the shaft. The moving gear hole 103 is hexagonal, having substantially the same shape and size as the cross section of the body part 71 of the driven shaft 70, and its inner peripheral surface is adapted to fit with the side peripheral surface of the body part 71 of the driven shaft 70. The driven shaft 70 is passed through the moving gear hole 103, and the moving gear 101 is placed on the moving part 40. With this configuration, the moving gear 101 rotates in conjunction with the rotation of the driven shaft 70. Furthermore, the moving gear 101 is movable (slidable) in the axial direction of the driven shaft 70 relative to the driven shaft 70, and moves in conjunction with the movement of the moving part 40.

[0041] 1 to 4 and 7, the output side transmission part is an output gear 105, which is a spur gear. The output gear 105 is attached coaxially to the output shaft 91 in a state where the output gear 105 is in approximate contact with the upper surface of the moving part 40, with the output shaft 91 passing through a hole that penetrates the shaft.

[0042] With the above-described configuration, the output section 90, the moving section 40, and the second transmission section 100 move together in the vertical direction.

[0043] The drive unit 50 may not include the reducer 51, and the drive shaft 60 may be directly driven by the motor 53. The first transmission unit 80 may not include the torque limiter 85. The first transmission unit 80 may not include the intermediate shaft 81, the first intermediate gear 84, and the second intermediate gear 87, and the rotation of one of the drive shaft 60 and the driven shaft 70 may rotate the other via a transmission unit such as a gear. Furthermore, although the second transmission unit 100 is provided above the moving unit 40, it may also be provided below the moving unit 40, for example, by being rotatably supported (held) on the moving unit 40 by a separate support (holding) member. The cross-sectional shapes of the driven shaft 70 and the moving gear hole 103 may be other than hexagonal, and may be any shape as long as the moving gear 101 rotates with the rotation of the driven shaft 70 and can move along the driven shaft 70. In addition, the driven shaft 70 does not have to be passed through the moving part 40. Furthermore, the first transmission unit 80 and the second transmission unit 100 may be pulleys and belts wound around them instead of spur gears meshing with each other. The first transmission unit 80 may be any unit capable of transmitting rotation between the drive shaft 60 and the driven shaft 70. The second transmission unit 100 may be any unit capable of transmitting rotation between the driven shaft 70 and the output unit 90 (output shaft 91).

[0044] The main body case 110 is intended to cover each component of the main body 2. As shown in FIGS. 1 to 7, the main body case 110 is box-shaped with an opening, and is detachable from the first base 20. The main body case 110 is attached to the first base 20 with the opening facing downward.

[0045] Next, a description will be given of the separate body 200. The separate body 200 includes a separate case 210, a communication section 220, a control section 230, and a power supply section 240, as shown in FIG.

[0046] The separate case 210 is used to house each component of the separate body 200. The separate case 210 includes a separate case main body 211 and legs 213. The separate case main body 211 is box-shaped and has an opening on the front side, which can be opened and closed by a door (not shown). The legs 213 are column-shaped and extend downward from the bottom surface of the separate case main body 211. The separate case main body 211 is installed at a height above the field by fixing the tip side of the legs 213 to the field.

[0047] The communication unit 220 is for communicating with external devices such as the terminal 800, the information processing device 900 (server), and other control devices 1. In this embodiment, the communication unit 220 is provided in the separate case main body 211. The communication unit 220 may communicate with external devices in any manner, but in this embodiment, the communication unit 220 is configured to communicate with external devices via an LPWA (Low Power Wide Area Network).

[0048] The control unit 230 controls the components of the control device 1, such as the drive unit 50 and the communication unit 220. In this embodiment, the control unit 230 is provided in the separate case main body 211. The control unit 230 is connected to the drive unit 50, the communication unit 220, etc. The control unit 230 includes a CPU (Central Processing Unit) and a memory. The memory stores programs for realizing the functions of the control unit 230. The control unit 230 controls the driving of the drive unit 50 based on instructions from external devices received by the communication unit 220 and signals from an encoder.

[0049] The control device 1 may be provided with an input unit for inputting information, and the control unit 230 may control the driving of the driving unit 50 based on the input from the input unit.

[0050] The power supply unit 240 is for supplying power to components of the control device 1, such as the drive unit 50, the control unit 230, and the communication unit 220. In this embodiment, the power supply unit 240 is a battery, and is provided inside the separate case main body 211. The power supply unit 240 is directly or indirectly connected to the drive unit 50, the control unit 230, and the communication unit 220. Note that the power supply unit 240 may be configured with a solar panel and a storage battery that stores the power generated by the solar panel.

[0051] The control device 1 may not include the separate body 200, but may include the control unit 230, the communication unit 220, and the power supply unit 240 in the main body 2.

[0052] Next, a description will be given of a water conveying device 300 equipped with the control device 1 of this embodiment. As shown in Fig. 9, the water conveying device 300 is equipped with a water conveying section 400 and the control device 1. The control device 1 is as described above, and a description of its configuration will be omitted here.

[0053] In this embodiment, the water supply unit 400 is a valve device. The water supply unit 400 includes a water supply unit main body 410, an operation unit 450, and a partition 460.

[0054] The water supply unit main body 410 has a water supply channel 420 therein. The water supply channel 420 is composed of a water intake channel 421, an internal space 424, and a water discharge channel 426. The water intake channel 421 is a flow path for taking in water and extends upward from the lower end of the water supply unit main body 410. The lower end of the water intake channel 421 is open and forms a water intake port 422 for taking in water. The internal space 424 is connected to the upper end of the water intake channel 421 and extends to the upper end of the water supply unit main body 410, and is open at its upper end. The water discharge channels 426 are a flow path for discharging water, and two are provided. Each water discharge channel 426 is connected to the left and right sides of the internal space 424, respectively, and extends laterally from there. The tip of each water discharge channel 426 is open and forms a water discharge port 427 for discharging water.

[0055] The water supply unit main body 410 is detachably attached to the tip side of the water discharge channel 426 and is provided with a water stopper 430 that closes the water discharge outlet 427. The water supply unit 400 can switch the water discharge outlet 427 from which water is discharged by closing one of the water discharge outlets 427 with the water stopper 430. In this embodiment, the water stopper 430 is attached to the water discharge outlet 427 on the left side, and water is discharged from the water discharge outlet 427 on the right side.

[0056] The water supply unit main body 410 is provided at its upper end with a lid 440 that closes the opening at the upper end of the internal space 424. The lid 440 is detachable from the water supply unit main body 410 and is attached so as to close the opening at the upper end of the internal space 424. The lid 440 is provided with a plurality of holes extending downward to connect the water supply unit 400 to the control device 1. A female thread is provided on the inner peripheral surface of each hole. The center of the lid 440 is provided with an operation unit hole 444 that penetrates in the vertical direction to allow the operation unit 450 to pass through. The operation unit hole 444 is also provided with a female thread on the inner peripheral surface.

[0057] The operating unit 450 is used to open and close (raise and lower) the partition 460. The operating unit 450 is cylindrical, and has a male thread 452 on its side circumferential surface that fits into the female thread of the operating unit hole 444. With the longitudinal direction of the operating unit 450 parallel to the up-down direction, the male thread 452 of the operating unit 450 fits into the female thread of the operating unit hole, and the operating unit 450 is passed through the operating unit hole 444 of the lid unit 440, penetrating the lid unit 440. The upper end of the operating unit 450 has a hexagonal cross section, and is adapted to fit into the mounting hole 95 of the socket 93.

[0058] The partition 460 is used to open and close the water supply channel 420. In this embodiment, the partition 460 is a valve body that can close the upper end of the water intake channel 421, and is connected to the lower end of the operation unit 450.

[0059] When the operating part 450 of the water supply part 400 is rotated, the operating part 450 and the partition 460 move up and down, thereby opening and closing the water supply channel 420 (the water intake channel 421).

[0060] The control device 1 is attached to the top of the water supply unit 400 by passing a bolt 500 through a hole (not shown) provided in the first base 20 and fastening the bolt 500 to a female thread of a hole provided in the lid 440 of the water supply unit 400. In addition, the upper end of the operation unit 450 is fitted into the mounting hole 95 of the socket 93.

[0061] In the water conveying device 300, under normal operating conditions with no abnormalities in the control device 1, as shown in FIG. 9 , when the partition 460 blocks the water intake channel 421 and the drive unit 50 is driven to rotate the drive shaft 60 in one direction, the driven shaft 70 rotates via the first transmission unit 80, and the rotation of the driven shaft 70 rotates the output unit 90 and the operating unit 450 connected thereto via the second transmission unit 100. The rotation of the operating unit 450 raises the operating unit 450, the partition 460, the output unit 90, the moving unit 40, and the second transmission unit 100, as shown in FIG. 10 . When the drive unit 50 drives the drive shaft 60 to rotate in the other direction, the operating unit 450, the partition 460, the output unit 90, the moving unit 40, and the second transmission unit 100 descend. The control unit 230 controls the driving of the drive unit 50 based on instructions from external devices received via the communication unit 220 and signals from the encoder. As a result, the partition 460 moves to the indicated position. When the water intake channel 421 and the internal space 424 are connected by the movement of the partition 460, water flowing into the water supply channel 420 from the water intake port 422 is released from the water discharge port 427. The amount of water released from the water discharge port 427 is adjusted by the position of the partition 460.

[0062] In the event of an abnormality, such as when the operating unit 450 no longer rotates due to the drive of the drive unit 50 due to some factor, such as a failure of the drive unit 50, the water supply device 300 (control device 1) can open / close (move) the partition 460 easily and quickly without removing the control device 1 from the water supply unit 400 by manually rotating the driven shaft 70 using a tool or the like.

[0063] When the driven shaft 70 is manually rotated, if a torque exceeding a predetermined torque acts on the torque limiter 85, the torque limiter 85 blocks the transmission of the torque to the intermediate shaft 81. As a result, the transmission of torque to the drive shaft 60 and the drive unit 50 is also blocked.

[0064] Next, a description will be given of a farm field management system equipped with the water conveying device 300. In this embodiment, the farm field is a paddy field F. There may be one paddy field F or multiple paddy fields F.

[0065] 11, the farm land management system includes water conveying devices 300, 301 each equipped with a control device 1, a sensor 700, a terminal 800, and an information processing device 900. The water conveying devices 300, 301 (control device 1), the terminal 800, and the information processing device 900 are connected to each other so as to be able to communicate with each other. The sensor 700 is also connected to the terminal 800 and the information processing device 900 so as to be able to communicate with each other.

[0066] Two water conveying devices 300, 301 are provided in each paddy field F, one for water supply and one for water discharge. The water conveying device 300 for water supply is installed in a position where the water conveying unit 400 can take in water from an irrigation channel or the like and discharge it into the paddy field F. The water conveying device 301 for water discharge is installed in a position where the water conveying unit 400 can take in water from the paddy field F and discharge it into an irrigation channel or the like.

[0067] The sensor 700 acquires various information about each rice paddy F. In this embodiment, the sensor 700 is composed of a water level sensor, a temperature sensor, a humidity sensor, and a camera, and is provided in each rice paddy F. The water level sensor measures the water level in the rice paddy F. The temperature sensor measures the water temperature and air temperature in the rice paddy F. The humidity sensor measures the humidity of the air in the rice paddy F. The camera photographs the rice paddy F.

[0068] The terminal 800 is used by a user who manages the paddy field F, and is, for example, a smartphone, a tablet, or a personal computer. Applications for executing the following functions are installed on the terminal 800.

[0069] The terminal 800 can transmit instructions to the control device 1 of the water supply and discharge water conveyance devices 300, 301 to drive the drive unit 50. The instructions to drive the drive unit 50 include, for example, the direction, amount, and position of movement of the partition 460. When the control device 1 receives an instruction from the terminal 800, the control unit 230 drives the drive unit 50 in accordance with the instruction, causing the partition 460 to move in accordance with the instruction.

[0070] The terminal 800 can use an application to instruct the sensor 700 and the information processing device 900 to transmit information from the sensor 700 to the terminal 800. The terminal 800 can also instruct the information processing device 900 to execute various processes and transmit the results of the processes to the terminal 800. The terminal 800 can also output the acquired information from the sensor 700 and numerical values ​​and graphs of the results of the processes to a display.

[0071] The information processing device 900 is a server, for example, a cloud server, and stores various information such as the location and size of the paddy fields F under management, and the amount of methane gas generated per unit area of ​​the region.

[0072] The information processing device 900 executes the stored programs to perform the following processes. Upon receiving the instruction, the information processing device 900 transmits the instruction to the sensor 700, acquires the information measured by the sensor 700 (information from the sensor 700), and stores this. Furthermore, upon receiving the instruction, the information processing device 900 calculates interim drainage information such as the time when the water level of the paddy field F is zero and the accumulated time from the information from the water level sensor of the specified paddy field F. Furthermore, upon receiving the instruction, the information processing device 900 calculates the amount of carbon dioxide emissions reduction based on the location, size, amount of methane gas generated per unit area of ​​the region, and interim drainage information of the specified paddy field F. The instructions received by the information processing device 900 may be received from the terminal 800 or from the input unit of the information processing device 900.

[0073] When the information processing device 900 receives processing from the terminal 800, it transmits the processing results of each of the above processes to the terminal 800. Furthermore, the information processing device 900 can also output the acquired information of the sensor 700 and numerical values ​​and graphs of the processing results of each of the above processes to a display or the like of the information processing device 900.

[0074] Next, a control device 1000, a water conveying device, and a farm land management system according to another embodiment will be described. The control device 1000, the water conveying device, and the farm land management system according to the other embodiment differ from the control device 1, the water conveying device 300, and the farm land management system described above in the configuration of the first transmission unit 80. Here, the control device 1000 according to the other embodiment will be described in terms of the parts that differ from the control device 1 described above.

[0075] As shown in Figures 12 and 13, the first transmission part 80 of the control device 1000 of another embodiment includes an intermediate shaft 81, a drive gear 83, a first intermediate gear 84, a driven gear 88, and a positioning part.

[0076] The intermediate shaft 81 has an axis parallel to a predetermined direction, in other words, parallel to the axes of the drive shaft 60 and the driven shaft 70, and is provided on the base 10 so as to be movable in the predetermined direction and rotatable about its axis. As shown in FIGS. 12 and 13 , the intermediate shaft 81 is composed only of a body portion 81a. A handle 81c is provided at the upper end of the intermediate shaft 81 for manually rotating the intermediate shaft 81. Note that instead of the handle 81c, a hexagonal pillar portion or the like may be provided to which a tool for rotating the intermediate shaft 81 can be attached.

[0077] The intermediate shaft 81 is passed through the intermediate shaft hole 35 of the second base portion 30 so as to be movable in the vertical direction and rotatable about its axis. The diameter of the intermediate shaft hole 35 is approximately the same as the diameter of the intermediate shaft 81 (body portion 81a).

[0078] The positioning portion is used to position the intermediate shaft 81 relative to the base portion 10. The positioning portion may be any portion capable of positioning the intermediate shaft 81, but in this embodiment, it includes a plunger 120 and grooves 131 and 133. The plunger 120 includes a plunger case 121, a tip portion 123, and an elastic body 125. The plunger case 121 has an internal space with an open tip. A ball, which is the tip portion 123, is housed within the plunger case 121 with part of the ball protruding from the opening to the outside. The diameter of the opening of the plunger case 121 is smaller than the diameter of the tip portion 123, preventing the tip portion 123 from protruding from the internal space to the outside. A coil spring is provided within the plunger case 121 as the elastic body 125. The elastic body 125 biases the tip portion 123 from the inside toward the outside.

[0079] Two grooves 131, 133 are provided on the intermediate shaft 81 with a gap between them in the longitudinal direction of the intermediate shaft 81. Each groove 131, 133 has an arc-shaped cross section into which the tip end 123 (ball) can fit, and is provided annularly in the circumferential direction of the intermediate shaft 81. In the following description, the upper groove will be referred to as the first groove 131, and the lower groove will be referred to as the second groove 133.

[0080] The plunger 120 is attached to the second base 30 so that the tip portion 123 protrudes in the horizontal direction, fits into the grooves 131 and 133, and comes into contact with the side circumferential surface of the intermediate shaft 81 when it is disengaged from the grooves 131 and 133. When the intermediate shaft 81 is moved from a state in which the tip portion 123 of the plunger 120 is fitted into the grooves 131 and 133, the tip portion 123 of the plunger 120 disengages from the grooves 131 and 133, and moves while contacting the side circumferential surface of the intermediate shaft 81 due to the restoring force of the elastic body 125. With this configuration, by moving the intermediate shaft 81 in the vertical direction, the position of the intermediate shaft 81 can be switched between a first position in which the tip portion 123 of the plunger 120 fits into the first groove 131, and a second position in which the tip portion 123 fits into the second groove 133. Furthermore, since the grooves 131 and 133 are annular, with the tip 123 of the plunger 120 fitted into the grooves 131 and 133, the intermediate shaft 81 can rotate around its axis.

[0081] The drive gear 83 and the first intermediate gear 84 are the same as those in the control device 1 described above. The driven gear 88 has a thicker tooth portion than the drive gear 83 and the first intermediate gear 84. The drive gear 83, the first intermediate gear 84, and the driven gear 88 are configured such that, when the intermediate shaft 81 is in the first position, the first intermediate gear 84 meshes with the drive gear 83 and the driven gear 88, and when the intermediate shaft 81 is in the second position, the first intermediate gear 84 does not mesh with the drive gear 83 but meshes only with the driven gear 88.

[0082] This form of control device 1000 and the water supply device equipped with it can control the partition in the same manner as the control device 1 and water supply device 300 described above by positioning the intermediate shaft 81 in the first position when there is no abnormality in the water supply device (control device 1000).

[0083] Furthermore, in the case of the control device 1000 of this embodiment and the water conveying device including the same, in the event of an abnormality such as the operation unit 450 no longer rotating due to drive of the drive unit 50 due to some factor, such as a failure of the drive unit 50, the partition 460 can be opened / closed (moved) easily and quickly without removing the control device 1 from the water conveying unit 400 by moving the intermediate shaft 81 from the first position to the second position and manually rotating the handle 81c. By moving the intermediate shaft 81 to the second position, the first intermediate gear 84 does not mesh with the drive gear 83, so that the rotation of the intermediate shaft 81 is not transmitted to the drive unit 50, and damage to the drive unit 50 due to the rotation of the intermediate shaft 81 can be prevented without using a torque limiter 85. Furthermore, the intermediate shaft 81 can be easily switched between the first position and the second position in a short time.

[0084] The control device 1 and the water supply device 300 can control the water supply from the water supply unit 400, and in the event of an abnormality, such as when the operating unit 450 no longer rotates due to the driving of the drive unit 50, the partition 460 can be opened / closed (moved) easily and quickly by manually rotating the driven shaft 70 without removing the control unit 230 from the water supply unit 400.

[0085] According to the control device 1 and the water supply device 300, by providing a torque limiter 85, when the driven shaft 70 is manually rotated, if a torque exceeding a predetermined torque acts on the torque limiter 85, the torque is not transmitted to the drive unit 50, thereby preventing damage to the drive unit 50 due to the rotation of the driven shaft 70.

[0086] According to the control device 1 and the water supply device 300, by making the driven shaft 70 hexagonal prism-shaped, tools such as a wrench or hex wrench can be used, making it even easier to manually rotate the driven shaft 70.

[0087] According to the control device 1 and the water conveying device 300, by providing the communication unit 220, it is possible to remotely control the water conveyance of the water conveying unit 400.

[0088] The farmland management system can manage the conditions of the farmland, such as the water level, temperature, and interim drainage. The farmland management system can also adjust the water level and water temperature in the farmland by remotely controlling the position of the partition 460 of the water supply and discharge water conveyance device 300 using a terminal 800 or an information processing device 900. The farmland management system can also suppress methane gas generated from the farmland by remotely draining the field, which brings the water level in the field to zero. The farmland management system can also calculate the reduction in carbon dioxide emissions from the farmland.

[0089] According to another aspect of the control device 1000 and the water supply device equipped with the same, the water supply from the water supply section 400 can be controlled, and in the event of an abnormality, such as when the operating section 450 no longer rotates due to driving by the drive section 50, the intermediate shaft 81 can be manually rotated, so that the partition 460 can be opened / closed (moved) easily and quickly without removing the control section 230 from the water supply section 400 or using the torque limiter 85.

[0090] In another embodiment of the control device 1000 and the water supply device equipped with the same, by providing the plunger 120 and the groove portions 131, 133, the first intermediate gear 84 can be easily and quickly switched between a first position in which it meshes with the drive gear 83 and the driven gear 88, and a second position in which it meshes with only the driven gear 88.

[0091] The present invention is not particularly limited to the above-described embodiment, and can be modified as appropriate within the scope of the gist of the present invention. [Explanation of symbols]

[0092] 1,1000 control devices 2 Main unit 10 base 12 Pillar section 20 1st base 23 Driven shaft hole 25 Hole for operation part 30 Second base 31 Drive shaft hole 33 Driven shaft hole 35 Intermediate shaft hole 40 Moving Part 41 Pillar hole 43 Driven shaft hole 45 Output shaft hole 50 Drive unit 51 Reducer 53 Motor 60 Drive shaft 70 driven shaft 71 Torso 73 Insertion section 80 First Transmission Section 81 Intermediate shaft 81a Torso 81b Insertion part 81c handlebars 82 First intermediate transmission section 83 Drive Gear 84 First intermediate gear 85 Torque limiter 85a Limiter body 85b Rotating part 86 Second intermediate transmission section 87 Second intermediate gear 88 Driven gear 90 Output section 91 Output shaft 93 Socket 95 mounting holes 100 Second Transmission Section 101 Moving Gear 103 Moving gear hole 105 Output gear 110 Main unit case 120 Plunger 121 Plunger case 123 Tip 125 Elastic Body 131 First groove portion (groove portion) 133 Second groove (groove) 200,201 separate 210 Separate Case 211 Separate case body 213 Legs 220 Communications Department 230 Control Unit 240 Power supply section 300,301 Water supply equipment 400 Water supply section 410 Water supply unit body 420 Waterway 421 Intake Channel 422 Water Intake 424 Interior Space 426 Spillway 427 Outlet 430 Water stop section 440 Lid 444 Hole for operation part 450 Control unit 452 Male thread 460 partitions 500 volts 700 Sensors 800 terminals 900 Information Processing Equipment F Paddy field (field)

Claims

1. A control device that rotates an operating unit connected to a partition to rotate the operating unit of a water supply unit that opens and closes a water supply channel by the partition, A base and a drive unit provided on the base; a control unit that controls the driving of the drive unit; a drive shaft whose axis is parallel to a predetermined direction and which rotates around its axis when driven by the drive unit; a driven shaft whose axis is parallel to the predetermined direction and is provided on the base so as to be rotatable about its axis; a first transmission unit that rotates one of the drive shaft and the driven shaft in response to rotation of the other; a moving unit provided on the base unit so as to be movable in the predetermined direction; an output unit that is detachable from the operation unit and is provided on the moving unit so as to be rotatable around the predetermined direction; a second transmission unit that rotates one of the driven shaft and the output unit in accordance with rotation of the other; Equipped with A control device in which the output unit, the moving unit, and the second transmission unit move together in the predetermined direction.

2. The first transmission unit is an intermediate shaft whose axis is parallel to the predetermined direction and is provided on the base portion so as to be rotatable about its axis; a first intermediate transmission unit that rotates one of the drive shaft and the intermediate shaft in response to rotation of the other; a second intermediate transmission unit that rotates one of the intermediate shaft and the driven shaft in accordance with rotation of the other; a torque limiter that blocks transmission of rotation between the drive shaft and the driven shaft when a torque exceeding a predetermined torque acts on the drive shaft; The control device according to claim 1 , comprising:

3. the torque limiter is provided on the intermediate shaft, the first intermediate transmission part includes gears that mesh with each other, a drive gear provided on the drive shaft, and a first intermediate gear provided on the intermediate shaft; the second intermediate transmission part is a gear that meshes with each other and includes a second intermediate gear provided on the torque limiter and a driven gear provided on the driven shaft, 3. The control device according to claim 2, wherein when a torque exceeding a predetermined torque acts on the torque limiter, the torque limiter blocks transmission of rotation from the second intermediate gear to the intermediate shaft.

4. the second transmission unit includes a movable gear and an output gear that mesh with each other, the moving gear is movable in accordance with the movement of the moving part and is provided on the driven shaft in a rotatable manner in accordance with the rotation of the driven shaft, The control device according to claim 1 , wherein the output gear is provided in the output section.

5. The first transmission unit is an intermediate shaft having an axis parallel to the predetermined direction and provided on the base so as to be movable in the predetermined direction and rotatable about its axis; a drive gear that is a gear provided on the drive shaft; a first intermediate gear that is a gear provided on the intermediate shaft; a driven gear that is a gear provided on the driven shaft; Equipped with 2. The control device according to claim 1, wherein the first transmission unit is switched, by movement of the intermediate shaft, between a state in which the first intermediate gear meshes with the drive gear and the driven gear and a state in which the first intermediate gear does not mesh with the drive gear but meshes with the driven gear.

6. a positioning portion for positioning the intermediate shaft relative to the base portion; The positioning unit is a groove portion provided annularly in the circumferential direction of the intermediate shaft; a plunger provided at the base; Equipped with the plunger has a tip end portion and an elastic body, and the tip end portion is biased outward by the elastic body in a direction perpendicular to the predetermined direction; The control device according to claim 5 , wherein the tip is capable of fitting into the groove.

7. 7. The control device according to claim 6, wherein the groove portion is provided at a position where the tip of the plunger fits when the first intermediate gear is in mesh with the drive gear and the driven gear, and at a position where the tip of the plunger fits when the first intermediate gear is not in mesh with the drive gear but is in mesh with the driven gear.

8. A control device according to any one of claims 1 to 7; The water supply unit; Equipped with The output unit is attached to the operation unit.

9. A communication unit for communicating with an external device is provided, The water conveying device according to claim 8, wherein the control unit controls the driving of the drive unit based on an instruction from the external device.

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