Water gate drive unit

Abstract

To provide a sluice gate driving device capable of easily automating a manual sluice gate.SOLUTION: A sluice gate driving device 1 comprises an attachment 12 into which a drive shaft 11 (7) of a sluice gate 4 is inserted, an actuator 2 having a drive source 25 for rotationally driving the attachment 12, and a detent member 3 that is attached to a frame 6 that guides a door 5 so that it can move up and down, and that supports the actuator 2.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a water gate drive device that can automate a water gate. [Background technology]

[0002] Sluice gates are installed to take in irrigation water from rivers. There are large sluice gates installed at the headworks of rivers, and small sluice gates installed in waterways branching off from the large sluice gates. Large sluice gates are generally automated, but small sluice gates are not. In the case of small sluice gates, users generally raise and lower the gates by manually turning a handle.

[0003] Patent Document 1 discloses a water gate drive device that automates a manual water gate (see Patent Document 1). In this water gate drive device, an attachment is detachably connected to the water gate handle, and the handle is rotated by an actuator. The actuator has an attachment and a drive source that rotates the attachment.

[0004] When the actuator rotates the handle, a reaction force from the floodgate acts on the actuator. The reaction force from the floodgate is not small, and the reaction force causes the actuator to try to reverse. In the invention of Patent Document 1, to prevent the actuator from reversing, a fixing device (anti-rotation member) that supports the actuator is attached to a concrete base, and the anti-rotation member receives the reaction force acting on the actuator. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Publication number 4-28917 Summary of the Invention [Problem to be solved by the invention]

[0006] However, conventional floodgate drive devices have the problem that the attachment is connected to the handle while the handle is already attached to the floodgate, which makes the attachment and therefore the actuator large. Also, because the anti-rotation member is attached to the concrete base, it is difficult to install the floodgate drive device on small floodgates that do not have a concrete base.

[0007] The present invention has been made in view of the above-mentioned problems, and has an object to provide a water gate drive device that can easily automate a manual water gate. [Means for solving the problem]

[0008] In order to solve the above problems, one aspect of the present invention is a gate assembly comprising an attachment into which a drive shaft of a water gate is inserted, an actuator having a drive source for rotating the attachment, and a rotation stopper member attached to a frame that guides the gate body so that it can be raised and lowered, and supporting the actuator. The water gate is a winding type water gate that rotates a screw shaft and raises and lowers a nut and the gate body connected to the nut by the action of a feed screw, and the attachment is inserted into the drive shaft formed at the upper end of the screw shaft. It is a gate drive device. Another aspect of the present invention is a floodgate drive device comprising an attachment into which the drive shaft of a floodgate is inserted, an actuator having a drive source for rotating the attachment, and a rotation prevention member attached to a frame that guides the gate body so that it can be raised and lowered freely and supporting the actuator, wherein the rotation prevention member extends in a direction approximately parallel to the drive shaft and has a pair of pillar portions arranged on both sides of the drive shaft, and a beam portion bridged between the pair of pillar portions and to which the actuator is attached. Yet another aspect of the present invention is a water gate drive device comprising an attachment into which the drive shaft of a water gate is inserted, an actuator having a drive source for driving the attachment to rotate, and a rotation prevention member attached to a frame that guides the gate body so that it can be raised and lowered freely and supports the actuator, wherein the rotation prevention member is attached to the frame of the water gate via a position adjustment member so that its horizontal position can be adjusted. [Effects of the Invention]

[0009] According to the present invention, the drive shaft of the floodgate is inserted into the attachment, which allows the attachment and, in turn, the actuator to be made smaller. Furthermore, the anti-rotation member is attached to the frame of the floodgate, so the existing floodgate frame can be used to firmly absorb the reaction force acting on the actuator. Therefore, manual floodgates can be easily automated. [Brief explanation of the drawings]

[0010] [Figure 1] 1 is a perspective view of a water gate on which a water gate driving device according to a first embodiment of the present invention is installed. [Figure 2] FIG. 2 is an enlarged view of the water gate drive device of the present embodiment. [Figure 3]3 is a vertical cross-sectional view of the water gate drive device of the present embodiment (a cross-sectional view taken along line III-III in FIG. 2). [Figure 4] Fig. 4(a) is a perspective view of a spindle-type floodgate with a handle attached, and Fig. 4(b) is a perspective view of a spindle-type floodgate with a handle removed. [Figure 5] FIG. 10 is a perspective view of a water gate on which a water gate driving device according to a second embodiment of the present invention is installed. [Figure 6] FIG. 4 is a longitudinal sectional view of an actuator according to a second embodiment of the present invention. [Figure 7] FIG. 10 is a perspective view of a water gate in which a water gate driving device according to a third embodiment of the present invention is installed. [Figure 8] FIG. 10 is a longitudinal sectional view of an actuator according to a third embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0011] Hereinafter, a water gate driving device according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings. However, the water gate driving device according to the present invention can be embodied in various forms and is not limited to the embodiments described herein. The present embodiment is provided with the intention that those skilled in the art will be able to fully understand the invention by fully disclosing the specification. (First embodiment)

[0012] FIG. 1 shows a sluice gate 4 on which a sluice gate driving device 1 according to a first embodiment of the present invention is installed. The sluice gate 4 includes a gate body 5 and a frame 6 that guides the gate body 5 so that it can move up and down freely. The frame 6 is made of metal. The frame 6 is gate-shaped and includes a pair of left and right guide posts 6a, 6b and a connecting beam 6c that is connected to the upper ends of the guide posts 6a, 6b. The guide posts 6a, 6b are provided with guide grooves that guide the gate body 5 so that it can move up and down freely.

[0013] The floodgate 4 of this embodiment is a winding-up type floodgate. The winding-up type floodgate 4 rotates a screw shaft 7 to raise and lower a nut 8 and a gate body 5 connected to the nut 8 by the action of a feed screw. The gate body 5 is connected to the nut 8 via a pipe 9. A vertically extending screw shaft 7 is threadedly engaged with the nut 8. The screw shaft 7 is rotatably supported on the frame 6 of the floodgate 4 via a bracket 10. A drive shaft 11 (see Figure 3) is formed integrally with the upper end of the screw shaft 7. When the drive shaft 11 is rotated, the nut 8 threadedly engaged with the screw shaft 7 and the gate body 5 connected to the nut 8 are raised and lowered by the action of the feed screw.

[0014] Figure 2 is an enlarged view of the water gate drive device 1. 2 is an actuator, 3 is a rotation prevention member, and 12 is an attachment for the actuator 2. Figure 3 is a longitudinal cross-sectional view of the water gate drive device 1 along the drive shaft 11. As shown in Figure 3, the drive shaft 11 and the screw shaft 7 are coaxial. The cross section of the drive shaft 11 is a polygon such as a square, or a circle with a keyway.

[0015] A manual handle can be attached and detached to the drive shaft 11. Figure 3 shows the state with the handle removed from the drive shaft 11. When retrofitting the floodgate drive device 1 to the floodgate 4, the handle is removed from the drive shaft 11, the drive shaft 11 is inserted into the attachment 12 of the actuator 2, and the anti-rotation member 3 that supports the actuator 2 is attached to the frame 6 of the floodgate 4 as shown in Figure 2.

[0016] The attachment 12 comprises a small-diameter upper shaft 12a and a large-diameter lower shaft 12b that is integrally formed coaxially with the upper shaft 12a. The upper shaft 12a is non-rotatably connected to the output shaft 24 of the actuator 2 (described later) by a key or the like. The lower shaft 12b has a hole 12b1 into which the drive shaft 11 is inserted. The cross section of the hole 12b1 is a polygon such as a square or a circle with a key groove, and is substantially the same as the cross section of the drive shaft 11. The lower shaft 12b is non-rotatably connected to the drive shaft 11.

[0017] The actuator 2 will be described in detail below. Reference numeral 21 denotes a casing, 22 a worm, 23 a worm wheel, and 24 an output shaft. The casing 21 comprises a substantially cylindrical casing body 21a with a bottom, and a worm housing box 21b formed integrally with the side wall of the casing body 21a. A motor 25 (see FIG. 1) serving as a drive source is attached to the end of the worm housing box 21b.

[0018] The worm 22, which faces horizontally, is rotatably housed in the worm housing box 21b via a bearing 26. A motor shaft of a motor 25 is connected to the worm 22. A manual handle may be detachably attached to the motor shaft of the motor 25 or the worm 22. This allows the worm 22 to be rotated manually even when the motor 25 is stopped.

[0019] A worm wheel 23 that meshes with the worm 22 is rotatably housed in the casing main body 21a. The axis of the worm wheel 23 is oriented vertically. The worm wheel 23 is hollow, and an output shaft 24 is coaxially fitted into the worm wheel 23. The attachment 12 is coaxially connected to the output shaft 24. The output shaft 24 and the attachment 12 may be formed integrally.

[0020] The output shaft 24 is rotatably supported by the casing 21 via a bearing 27 such as a cross roller bearing. Reference numeral 28 denotes a press plate for fixing the outer ring of the bearing 27 to the casing 21. Reference numeral 29 denotes a press nut for fixing the inner ring of the bearing 27 to the output shaft 24. The output shaft 24 has a flange portion 24a, which is fastened to the worm wheel 23 by fastening members such as bolts.

[0021] When the worm 22 is rotated by the motor 25 of the actuator 2, the worm wheel 23 that meshes with the worm 22 rotates at a reduced speed. When the worm wheel 23 rotates, the output shaft 24 that is fastened to the worm wheel 23 and the attachment 12 that is connected to the output shaft 24 rotate. When the attachment 12 rotates, the drive shaft 11 of the floodgate 4 rotates, and the gate body 5 moves up and down due to the action of the feed screw.

[0022] When the actuator 2 rotates the drive shaft 11, a reaction force from the floodgate 4 acts on the actuator 2. This reaction force is not small, and tends to cause the actuator 2 to reverse. As shown in Figure 2, to prevent the actuator 2 from reversing, a rotation prevention member 3 that supports the actuator 2 is attached to the frame 6 of the floodgate 4.

[0023] 2, the anti-rotation member 3 is gate-shaped, extends in a direction substantially parallel to the drive shaft 11, and has a pair of pillars 31a, 31b arranged on both sides of the drive shaft 11, and a beam 31c that spans between the pair of pillars 31a, 31b and to which the actuator 2 is attached. The anti-rotation member 3 is attached to a connecting beam 6c of the frame 6 of the floodgate 4.

[0024] The beam portion 31c of the anti-rotation member 3 is plate-shaped. The casing 21 of the actuator 2 is attached to the upper surface of the beam portion 31c. The attachment 12 passes through the beam portion 31c.

[0025] The pair of pillars 31a, 31b are attached to the connecting beam 6c of the frame 6 via position adjustment members 31d, 31e, respectively. The position adjustment members 31d, 31e are, for example, horizontally extending bolts, and both ends of the members are attached to the connecting beam 6c and the pillars 31a, 31b. The amount of horizontal offset of the drive shaft 11 from the connecting beam 6c varies depending on the type of floodgate 4. The position adjustment members 31d, 31e are provided to adjust the amount of offset.

[0026] The configuration of the water gate driving device 1 according to the first embodiment of the present invention has been described above. The water gate driving device 1 according to this embodiment has the following advantages.

[0027] Because the drive shaft 11 of the floodgate 4 is inserted into the attachment 12, the attachment 12 and therefore the actuator 2 can be made smaller. In addition, because the anti-rotation member 3 is attached to the frame 6 of the floodgate 4, the existing frame 6 of the floodgate 4 can be utilized to firmly receive the reaction force acting on the actuator 2. This makes it easy to automate the manual floodgate 4.

[0028] Since the anti-rotation member 3 is attached to a connecting beam 6c that spans between the upper ends of a pair of guide posts 6a, 6b of the frame 6 of the floodgate 4, installation space for the anti-rotation member 3 can be secured.

[0029] Since the anti-rotation member 3 has a pair of pillars 31a, 31b arranged on both sides of the drive shaft 11 and a beam 31c spanning the pair of pillars 31a, 31b, the reaction force acting on the actuator 2 can be transmitted to the frame 6 in a balanced manner whether the drive shaft 11 is rotating clockwise or counterclockwise.

[0030] The actuator 2 is connected to a motor 25 via a worm 22, and the attachment 12 is coaxially connected to the worm 22. circular and the worm wheel 23, the structure of the actuator 2 can be simplified and the actuator 2 can be made smaller. In addition, since the worm 22 and the worm wheel 23 have a self-locking property, even if the rotation of the motor 25 is stopped and the worm 22 is set free, the door body 5 can be prevented from falling under its own weight.

[0031] Figure 4 shows a spindle-type floodgate 41. Figure 4(a) shows a state in which a handle 46 is attached to a drive shaft 45 of the floodgate 41, and Figure 4(b) shows a state in which the handle 46 has been removed from the drive shaft 45. A floodgate drive device 51 according to the second embodiment of the present invention is installed on the spindle-type floodgate 41.

[0032] The spindle-type floodgate 41 rotates a nut and raises and lowers a screw shaft 42 and a gate body 43 connected to the screw shaft 42 by the action of a feed screw. The gate body 43 is attached to the lower end of the screw shaft 42, which extends vertically. A drive shaft 45 is connected to a nut (not shown) that is rotatably housed in a casing 44. When the drive shaft 45 is rotated, the screw shaft 42, which is threaded into the nut, and the gate body 43 connected to the screw shaft 42 are raised and lowered by the action of the feed screw.

[0033] Figure 5 shows a water gate drive device 51 according to a second embodiment of the present invention. Reference numeral 52 denotes an actuator, 53 denotes a rotation-preventing member, 54 denotes a motor as a drive source, and 55 denotes a cable gland for motor wiring. Removing the cylindrical cover 50 exposes a shaft (not shown) connected to a worm 56 of the actuator 52. A manual handle can be attached and detached to this shaft.

[0034] 6 shows a longitudinal cross section of the actuator 52 along the drive shaft 45. Reference numeral 56 denotes a worm, 57 denotes a worm wheel, 62 denotes an attachment into which the drive shaft 45 is inserted, and 59 denotes a casing.

[0035] The casing 59 is box-shaped. A worm 56 is rotatably housed in a side wall of the casing 59 via a bearing 60. A motor 54 (see FIG. 5) is attached to the casing 59. A motor shaft of the motor 54 is connected to the worm 56.

[0036] A worm wheel 57 that meshes with the worm 56 is rotatably housed in the casing 59. An output shaft 58 is fastened to the worm wheel 57 by a fastening member such as a bolt. The worm wheel 57 is formed hollow. The output shaft 58 is coaxially fitted into the hollow portion of the worm wheel 57. An attachment 62 is coaxially connected to the output shaft 58. The attachment 62 is formed hollow. The drive shaft 45 is inserted into the attachment 62 so that it cannot rotate. The output shaft 58 and the attachment 62 may be formed integrally.

[0037] The output shaft 58 is rotatably supported by a casing 59 via a bearing 61. Reference numerals 64a and 64b denote seals. Reference numeral 63 denotes a presser plate for fixing the outer ring of the bearing 61 to the casing 59.

[0038] When the worm 56 is rotated by the motor 54, the worm wheel 57 that meshes with the worm 56 rotates at a reduced speed. When the worm wheel 57 rotates, the output shaft 58 that is fastened to the worm wheel 57 and the attachment 62 that is connected to the output shaft 58 rotate. When the attachment 62 rotates, the drive shaft 45 of the floodgate 41 rotates, and the gate body 43 moves up and down due to the action of the feed screw.

[0039] 5, the anti-rotation member 53 is attached to a connecting beam 47c that spans between the upper ends of a pair of guide posts 47a, 47b of the frame 47 of the floodgate 41. The connecting beam 47c includes a first beam 47c1 and a second beam 47c2 that are parallel to each other.

[0040] The anti-rotation member 53 is gate-shaped, extends in a vertical direction substantially parallel to the drive shaft 45, and has a pair of pillars 66a, 66b arranged on both sides of the drive shaft 45, and a beam 66c that spans between the pair of pillars 66a, 66b and to which the actuator 52 is attached. The lower ends of the pair of pillars 66a, 66b are inserted and fixed between the first beam 47c1 and the second beam 47c2.

[0041] According to the water gate driving device 51 of the second embodiment, substantially the same effects as those of the water gate driving device 1 of the first embodiment can be achieved, and in addition, the attachment 62 circular This has the effect of allowing the screw shaft 42 of the spindle-type water gate 41 to move up and down within the attachment 62.

[0042] 7 shows a water gate driving device 71 according to a third embodiment of the present invention. Similar to the water gate driving device 51 according to the second embodiment, the water gate driving device 71 according to the third embodiment is attached to a spindle-type water gate 41. Reference numeral 72 denotes an actuator, 73 denotes a rotation prevention member, and 80 denotes an attachment into which the drive shaft 45 is inserted.

[0043] Figure 8 shows a vertical cross section of the actuator 72 along the drive shaft 45 (see Figure 4(b)) of the floodgate 41. Reference numeral 80 denotes an attachment, 74 denotes a casing, 75 denotes a motor, and 76a, 76b, and 76c denote speed reduction mechanisms, each comprising a first gear 76a, a second gear 76b, and a third gear 76c. The rotation of the motor 75 is reduced in speed by the speed reduction mechanisms 76a, 76b, and 76c before being transmitted to the output shaft 79.

[0044] A motor 75 is attached to the casing 74. A first gear 76a is fixed to a motor shaft 75a of the motor 75. A second gear 76b that meshes with the first gear 76a is rotatably supported by the casing 74 via a bearing. A manual handle may be detachably connected to the motor shaft 75a or the second gear 76b. This allows the attachment 80 to be turned manually even when the motor 75 is stopped.

[0045] The third gear 76c, which meshes with the second gear 76b, is formed hollow. An output shaft 79 is fastened to the third gear 76c by a fastening member such as a bolt. The output shaft 79 is rotatably supported in the casing 74 via a bearing. 77a and 77b are seals. The third gear 76c is formed hollow. The output shaft 79 is coaxially fitted into the hollow portion of the third gear 76c. An attachment 80 is coaxially connected to the output shaft 79. The attachment 80 is formed hollow. The drive shaft 45 is inserted into the attachment 80 so that it cannot rotate. The output shaft 79 and the attachment 80 may be formed integrally.

[0046] When the first gear 76a is rotated by the motor 75, the output shaft 79 and the attachment 80 connected to the output shaft 79 are decelerated and rotated by the reduction mechanisms 76a, 76b, and 76c. When the attachment 80 rotates, the drive shaft 45 of the floodgate 41 rotates, and the gate body 43 moves up and down due to the action of the feed screw.

[0047] 7, the anti-rotation member 73 is gate-shaped and has a pair of pillars 78a, 78b extending in a vertical direction substantially parallel to the drive shaft 45, and a beam 78c spanning between the pair of pillars 78a, 78b. The lower ends of the pair of pillars 78a, 78b are inserted and fixed between the first beam 47c1 and the second beam 47c2 of the connecting beam 47c.

[0048] According to the water gate driving device 71 of the third embodiment, substantially the same effects as those of the water gate driving device 1 of the first embodiment can be achieved, and in addition, the attachment 80 circular This provides the effect of allowing the spindle-type screw shaft 42 to move up and down within the attachment 80.

[0049] The present invention is not limited to the above-described embodiment, and can be embodied in other embodiments without departing from the spirit of the present invention.

[0050] In the above embodiment, an example was described in which the water gate drive device of the present invention was applied to a winding or spindle type water gate, but the water gate drive device of the present invention can also be applied to a bevel type water gate, which is a water gate in which the drive shaft is oriented horizontally by a bevel gear. [Explanation of symbols]

[0051] 1...water gate drive device, 2...actuator, 3...rotation prevention member, 4...water gate, 5...gate body, 6...frame, 6a, 6b...guide support, 6c...connecting beam, 11...drive shaft, 12...attachment, 22...worm, 23...worm wheel, 25...motor (drive source), 31a, 31b...pillar portion, 31c...beam portion, 41...water gate, 45...drive shaft, 46...handle, 47...frame, 47a, 47b...guide support Pillar, 47c...connecting beam, 51...water gate drive device, 52...actuator, 53...rotation stop member, 54...motor (drive source), 56...worm, 57...worm wheel, 62...attachment, 66a, 66b...pillar portion, 66c...beam portion, 71...water gate drive device, 72...actuator, 73...rotation stop member, 75...motor (drive source), 78a, 78b...pillar portion, 78c...beam portion, 80...attachment

Claims

1. an attachment into which the drive shaft of the water gate is inserted, and an actuator having a drive source for rotationally driving the attachment; a rotation prevention member attached to a frame that guides the door body so that it can be raised and lowered, and that supports the actuator; Equipped with The water gate is a winding type water gate that rotates a screw shaft and raises and lowers a nut and the gate body connected to the nut by the action of a feed screw, A water gate drive device in which the attachment is inserted into the drive shaft formed at the upper end of the screw shaft.

2. An attachment into which a drive shaft of a water gate is inserted, and an actuator having a drive source for rotating the attachment; a rotation prevention member attached to a frame that guides the door body so that it can be raised and lowered, and that supports the actuator; Equipped with The anti-rotation member extends in a direction approximately parallel to the drive shaft and has a pair of pillar portions arranged on both sides of the drive shaft, and a beam portion bridged between the pair of pillar portions and to which the actuator is attached.

3. an attachment into which the drive shaft of the water gate is inserted, and an actuator having a drive source for rotationally driving the attachment; a rotation prevention member attached to a frame that guides the door body so that it can be raised and lowered, and that supports the actuator; Equipped with A water gate drive device in which the anti-rotation member is attached to the frame of the water gate via a position adjustment member so that its horizontal position can be adjusted.

4. 4. The water gate drive device according to claim 1, wherein the anti-rotation member is attached to a connecting beam that spans between upper ends of a pair of guide posts of the frame.

5. 5. The water gate drive device according to claim 1, wherein the actuator comprises a worm connected to the drive source and an annular worm wheel to which the attachment is coaxially connected.

6. 6. The water gate drive device according to claim 1, wherein the attachment is formed in an annular shape.

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