JP2020016089A - Opening and closing device of sluice gate - Google Patents

Abstract

To provide an opening and closing device of a sluice gate making a mechanism for transmitting a rotational force of a driving shaft of an opening and closing device of a sluice gate whose rotation number is adjusted to an outside opening meter compact.SOLUTION: An opening and closing device of a sluice gate 10 includes a motor 11 and a driving shaft 12 rotatably driven by the motor 11 and making a door body D ascend and descend, and imparts rotational force to an input portion P1 of an outside opening meter P measuring an opening of the door body D via power transmission means Q. The opening and closing device comprises: a gear 32 fixed to the driving shaft 12; a gear 41 engaging with the gear 32 and having the number of teeth different from that of the gear 32; a supporting body 33 attached to the driving shaft 12 in a state where the driving shaft 12 is rotatably supported; and an output shaft 46 rotatably supported by the supporting body 33, rotatably driven by rotational force from the driving shaft 12 transmitted via the gears 32,41, and imparting rotational force to the power transmission means Q.SELECTED DRAWING: Figure 4

Description

The present invention relates to a water gate opening / closing device that moves up and down a door body of a water gate.

The opening of the door body in the sluice facility is measured by an opening meter. An opening meter may be employed as a component of the gate opening / closing device (see Patent Document 1), or an opening meter may be externally attached to the gate opening / closing device. As shown in FIG. 8, when an external opening meter 101 is employed for the water gate opening / closing device 100, the sprocket 103 attached to the input shaft 102 of the opening meter 101 and the driving shaft 104 of the water gate opening / closing device 100 The chain 106 is wound around the sprocket 105 mounted. The drive shaft 104 is provided with a driving force from a motor 108 via a speed reduction mechanism 107, and is driven to rotate together with the drums 109 and 110. The drums 109 and 110 are each driven to rotate, so that a wire connected to the door body is connected. The door is raised by winding up, and the wire is lowered to lower the door. Accordingly, the opening meter 101 can measure the opening of the door from the rotation of the input shaft 102.

By the way, when replacing a lock gate opening / closing device with a new lock gate opening / closing device, there is a case where an external opening meter is left for the gate opening / closing device and used together with the new gate opening / closing device. In this case, it is necessary to adjust the relationship between the rotation speed of the drive shaft of the new floodgate opening and closing device and the rotation speed of the input shaft of the opening gauge so that the opening gauge can accurately measure the opening of the door body. is there.

JP-A-5-79031

In some cases, the above adjustment can be made only by selecting an optimum number of teeth for a sprocket mounted on the drive shaft of the floodgate opening and closing device (hereinafter also referred to as “opening and closing device side sprocket”). The adjustment cannot be performed only by the device-side sprocket, and a rotation speed adjustment mechanism that adjusts the rotation speed of the opening and closing device-side sprocket to a predetermined rotation speed and transmits the rotation to the opening meter may be required. Needless to say, installation of the rotation speed adjusting mechanism requires securing of an installation space.
The present invention has been made in view of the above circumstances, and a water gate opening / closing device in which a mechanism for adjusting and transmitting the rotational force of a drive shaft of a water gate opening / closing device to an external opening meter is reduced in size. The purpose is to provide.

A water gate opening / closing device according to the present invention that meets the above object has a motor and a drive shaft that is rotated and driven by the motor to move the door body up and down, and an external opening meter that measures the opening degree of the door body. In a water gate opening / closing device that applies a rotational force to an input unit via a power transmission means, a gear G fixed to the drive shaft, a gear H meshing with the gear G, and having a different number of teeth from the gear G; A support attached to the drive shaft while the drive shaft is rotatably supported, and rotatably supported by the support, and rotational force from the drive shaft is transmitted via the gears G and H to rotate the drive shaft. An output shaft for driving and applying a rotational force to the power transmission means.

In the water gate opening and closing device according to the present invention, the support is rotatable about the drive shaft, and changes the distance from the output shaft to the input unit by rotating. Preferably, fixing means for fixing the support are attached.

In the sluice gate opening / closing device according to the present invention, it is preferable that the support has storage portions J and K for accommodating the gears G and H, respectively.

In the water gate opening / closing device according to the present invention, it is preferable that the gear H is fixed to the output shaft.

In the water gate opening / closing device according to the present invention, it is preferable that a sprocket on which the power transmission means, which is an endless chain, is mounted on the output shaft.

The sluice gate opening / closing device according to the present invention includes a gear G fixed to the drive shaft, a gear H meshing with the gear G, having a different number of teeth from the gear G, and a drive shaft rotatably supporting the drive shaft. It has an attached support and an output shaft that is rotatably supported by the support and that is driven to rotate by transmitting torque from the drive shaft via gears G and H to apply torque to the power transmission means. A mechanism for adjusting the rotational speed of the drive shaft and transmitting the rotational force to an external opening meter is provided by a support attached to the drive shaft, gears G and H, and an output shaft rotatably supported by the support. , And the mechanism can be made compact.

It is a partially omitted front view of the floodgate opening and closing device concerning one embodiment of the present invention. It is a partially omitted plan view of the same floodgate opening and closing device. It is a side view of the water gate opening and closing device. It is explanatory drawing of a support. It is explanatory drawing of a support body and a fixing means. It is explanatory drawing of a fixing means. It is explanatory drawing which shows the support body in the state which rotated. It is explanatory drawing of the water gate opening / closing apparatus and the opening meter which concern on a prior art example.

Next, embodiments of the present invention will be described with reference to the accompanying drawings to provide an understanding of the present invention.
As shown in FIGS. 1, 2, and 3, a water gate opening / closing device 10 according to an embodiment of the present invention includes a motor 11 and drive shafts 12, 13 that are driven to rotate by a motor 11 to raise and lower a door body D. This is a device that applies a rotational force to an input portion P1 of an external opening meter P that measures the opening of the door body D via an endless chain (an example of power transmission means) Q. The details will be described below.

As shown in FIGS. 1, 2, and 3, the water gate opening and closing device 10 includes a central unit 14 having a motor 11, and a left unit 15 and a right unit 16 disposed on the left and right of the central unit 14, respectively. . The central unit 14, the left unit 15, and the right unit 16 are fixed to the base R of the floodgate. A wire 18 wrapped around drums 19 and 20 attached to the upper left portion of the door body D and a drum 21 included in the left unit 15 is wound around the drum 18 of the left unit 15. The drum 23 included in the right unit 16 is wound around two drums (not shown) attached to the upper right portion of the door body D and a wire 25 laid over a drum 24 included in the right unit 16.

The left unit 15 has support mechanisms 26 and 27 that rotatably support the drive shaft 12 whose right end is connected to the central unit 14. The drive shaft 12 passes through the drum 18 between the support mechanisms 26 and 27. ing. The right unit 16 has support mechanisms 28 and 29 that rotatably support the drive shaft 13 whose left end is connected to the central unit 14. The drive shaft 13 passes through the drum 23 between the support mechanisms 28 and 29. ing.

The horizontally arranged drive shafts 12 and 13 are mainly constituted by a plurality of shaft members and a plurality of joints.
While the right end of the drive shaft 13 does not protrude rightward from the support mechanism 29 arranged on the right side of the drum 23, the left end of the drive shaft 12 is located on the left side of the drum 18 as shown in FIGS. From the support mechanism 26 disposed on the left side. As shown in FIG. 4, a portion of the drive shaft 12 protruding leftward from the support mechanism 26 is mainly constituted by a shaft member 30a and a shaft member 30b connected to the shaft member 30a. In the shaft member 30a, the diameter of the right region is larger than the diameter of the region extending from the left end to the center, and the right end of the right region forms a flange connected to the shaft member 30b.

As shown in FIG. 3, the opening meter P is fixed to the left unit 15 by a support member 31. The opening meter P has an input shaft P3 to which a sprocket P2 is attached, and measures the opening of the door body D based on the rotation speed of the input shaft P3. The opening meter P converts a measured value, which is an analog signal, into a digital signal by an A / D converter (not shown) and transmits the digital signal to a remote control room. In this embodiment, the input part P1 of the opening meter P is mainly constituted by the sprocket P2 and the input shaft P3.

As shown in FIGS. 4 and 5, a gear 32 (gear G) is fixed to a region extending from the left end to the center of the shaft member 30a (the left end of the drive shaft 12). 33 is attached to the drive shaft 12 with the left end of the drive shaft 12 rotatably supported.
The support 33 has bearings 34 and 35 rotatably supporting a region from the left end to the center of the shaft 30a on the left and right sides of the gear 32, respectively. A circular plate 36 having a larger diameter than the region extending from the left end to the center is fixed. Since the circular plate 36 is in contact with the bearing 34 from the left, and the right-side region of the shaft member 30a whose diameter is enlarged is in contact with the bearing 35 from the right, the support 33 does not move in the left-right direction.

The support 33 includes an annular member 37 to which a bearing 35 is attached, a hollow member 38 that accommodates the gear 32 inside, and a cover member 39 that covers the circular plate 36.
The annular member 37 is connected to the hollow member 38 from the right side, and the cover member 39 is connected to the hollow member 38 from the left side (in the present embodiment, the annular member 37 and the cover member 39 are connected to the hollow member 38 by welding. Linked). An oil seal 40 that is in contact with the right side region of the shaft 30a is mounted inside the annular member 37, and the support 33 rotates around the shaft 30a (that is, the drive shaft 12) around the shaft 30a. It is mounted so that it can move (rotate) freely. The bearing 34 is attached to the hollow member 38 and the cover member 39.

A gear 41 (gear H) having a smaller number of teeth than the gear 32 (having a different number of teeth from the gear 32) meshes with the gear 32 from below. The gear 41 is housed in the hollow member 38 below the gear 32, and a ring fitting 42 and a cover member 43 are respectively connected to the portion of the hollow member 38 that houses the gear 41 from left and right (in this embodiment, welding is performed). Are linked). In the present embodiment, in the hollow member 38, a portion for accommodating the gear 32 and a portion for accommodating the gear 41 correspond to the accommodation portion J and the accommodation portion K, respectively.

A bearing 44 is attached to the hollow member 38 and the annular metal fitting 42, a bearing 45 is attached to the cover member 43, and the bearings 44 and 45 are fixed to the gear 41 while penetrating the center of the gear 41. 46 is rotatably supported (that is, the output shaft 46 is rotatably supported by the support 33). A sprocket 47 is fixed to the horizontally arranged output shaft 46 at the left end protruding from the annular fitting 42, and a cylindrical member 48 that rotates integrally with the output shaft 46 from the right is in contact with the sprocket 47. An oil seal 49 that is in contact with the right side of the cylindrical tool 48 is mounted inside the annular metal fitting 42.

Further, as shown in FIGS. 3 and 5, the endless chain Q is stretched over a sprocket P2 and a sprocket 47.
When the motor 11 operates to raise or lower the door body D and the drive shafts 12 and 13 rotate, the rotational force from the drive shaft 12 is transmitted to the output shaft 46 via the gears 32 and 41, and the output shaft 46 Drive rotationally. The output shaft 46 applies a rotational force to the endless chain Q via a sprocket 47 that is driven to rotate together with the output shaft 46 to rotate the sprocket P2 and the input shaft P3. The opening of D is measured.

Here, since the support 33 is in a state of being cantilevered on the drive shaft 12 (hanging state), the rotation of the drive shaft 12 is performed by a mechanism including a support fixed to the base R, for example. As compared with the case of adjusting the number, the installation space of the mechanism is made more compact.

As shown in FIGS. 4, 5, and 6, the hollow member 38 is provided with a fixing means 51 for fixing the support 33 that is rotatable about the drive shaft 12. The fixing means 51 includes a support member 54 fixed to the lower side of the hollow member 38 by a bolt 52 and a nut 53, an elongated member 55 having one end rotatably mounted on the support member 54, and a connecting member 56. A bar screw 57 connected to the other end of the length member 55 and a long member 58 penetrated by the bar screw 57 are provided.

As shown in FIG. 6, the support 54 has a base 54a in contact with the hollow member 38 from the right and a front 54b penetrates one end of the long member 55. The elongated member 55 and the rod screw 57 are arranged coaxially, and the rod screw 57 and the elongated member 58 are orthogonal. The rod screw 57 is fixed to the elongated member 58 by nuts 59 and 60 mounted on the rod screw 57. As shown in FIGS. 3 and 6, the long member 58 is attached to a base member 61 of the left unit 15 so as to be rotatable around an axis in a horizontally arranged state.

The support 33 is fixed by the rod screw 57 being fixed to the long member 58 by the nuts 59 and 60, and the fixing of the rod screw 57 to the long member 58 by the nuts 59 and 60 is released. The rod screw 57 can be displaced with respect to the long member 58), so that the rod screw 57 can be turned around the drive shaft 12.
The distance from the output shaft 46 and the sprocket 47 to the sprocket P2 and the input shaft P3 (input portion P1) changes as the support 33 rotates about the drive shaft 12, as shown in FIGS.

Here, the endless chain Q elongates due to long-term use, and looseness occurs between the sprocket 47 and the sprocket P2. In the present embodiment, when the endless chain Q is loosened, the support 33 is rotated around the drive shaft 12 to increase the distance from the output shaft 46 to the input portion P1, so that the endless chain Q is loosened. Get rid of. After the slack of the endless chain Q is removed by the rotation of the support 33, the support 33 is fixed by fixing the rod screw 57 to the elongated member 58 by the nuts 59 and 60.
The fixing means for fixing the support 33 may be any as long as it can make the support 33 rotatable and can fix the support 33. The fixing means has a different structure from the fixing means 51. May be employed.

As described above, the embodiments of the present invention have been described, but the present invention is not limited to the above-described embodiments, and all changes in conditions that do not depart from the gist are within the scope of the present invention.
For example, a timing belt can be adopted as the power transmission means. When the timing belt is used, the opening meter and the support each have a pulley that is hung on the power transmission means.
Further, instead of the support attached to the end of the drive shaft, a support attached to the center of the drive shaft may be adopted.

And the support need not be rotatable about the drive shaft. In this case, the slackness of the power transmission means may be removed by adopting a design capable of changing the position of the opening meter with respect to the base part and the water gate opening / closing device, or the power may be supplied by using a tensioner for keeping the tension of the power transmission means within a predetermined range. The loosening of the transmission means may be prevented.
Further, the support does not have to have a structure for accommodating the gear G.

Further, the gear H meshing with the gear G does not need to be fixed to the output shaft. For example, the output shaft may be fixed to the gear meshing with the gear H.
Further, the support does not have to include a housing portion for housing the gear H, and a gear H having more teeth than the gear G may be employed.
Further, the water gate opening / closing device may be one that raises and lowers the door by raising and lowering the chain, and may be one that raises and lowers the door by raising and lowering the pin rack.

10: gate opening / closing device, 11: motor, 12, 13: drive shaft, 14: central unit, 15: left unit, 16: right unit, 18, 19, 20, 21: drum, 22: wire, 23, 24: Drum, 25: Wire, 26, 27, 28, 29: Support mechanism, 30a, 30b: Shaft, 31: Support member, 32: Gear, 33: Support, 34, 35: Bearing, 36: Circular plate, 37 : Ring member, 38: hollow member, 39: cover member, 40: oil seal, 41: gear, 42: ring bracket, 43: cover member, 44, 45: bearing, 46: output shaft, 47: sprocket, 48: cylindrical member, 49: oil seal, 51: fixing means, 52: bolt, 53: nut, 54: support, 54a: base side, 54b: front side, 55: long member, 56: connection Tool, 57: stick screw, 58: long Material, 59, 60: nut, 61: base member, D: door, P: degree meter, P1: the input section, P2: sprocket, P3: input shaft, Q: endless chain, R: base portion

Claims (5)

A motor and a drive shaft that is driven to rotate by the motor to raise and lower the door body, and provides a rotational force via a power transmission unit to an input unit of an external opening meter that measures the opening degree of the door body. In a floodgate switchgear,
A gear G fixed to the drive shaft;
A gear H meshing with the gear G and having a different number of teeth from the gear G;
A support attached to the drive shaft while rotatably supporting the drive shaft,
An output shaft that is rotatably supported by the support, that is rotationally driven by the rotational force from the drive shaft being transmitted via the gears G and H, and that applies a rotational force to the power transmission unit. Sluice switchgear. The water gate opening and closing device according to claim 1, wherein the support is rotatable about the drive shaft, and changes a distance from the output shaft to the input unit by rotating. A water gate opening / closing device, wherein fixing means for fixing the support is attached. 3. The sluice gate opening and closing device according to claim 1, wherein the support has storage portions J and K for accommodating the gears G and H, respectively. 4. The sluice gate opening / closing device according to claim 1, wherein the gear H is fixed to the output shaft. 5. The sluice gate opening / closing device according to any one of claims 1 to 4, wherein a sprocket on which the power transmission means, which is an endless chain, is mounted on the output shaft. .

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