JP4425868B2 - A sluice gate drive device for opening and closing a channel with a pin rack - Google Patents

Description

  The present invention is, for example, for opening and closing a flow path provided with a pin rack that adjusts the flow of water in the flow path by reciprocating up and down a water gate such as a door body, a gate, and a valve that opens and closes the flow path of a water channel and a water purification plant. The present invention relates to a sluice drive device.

  Conventionally, a sluice gate drive device for opening and closing a flow path is supported by the stand 15 by installing a stand 15 on a base 26 such as a foundation constructed in a flow path such as a water channel or a water purification plant, as shown in FIG. A gate 20 that opens and closes a channel, a door body, a valve, and the like is attached to the pin rack 40 by a joint 43, and the pinion 9 that meshes with the rack pin 42 provided along the longitudinal direction of the side plate 41 that constitutes the pin rack 40 is motor or manual. The flow gate is opened and closed by being driven to rotate by a handle and reciprocating the sluice 20 up and down with respect to the flow channel. The above-described sluice gate drive device for opening and closing the flow passage generally includes a pin rack 40 to which the sluice 20 is attached, a pinion shaft 11 provided with a pinion 9 that meshes with the rack pin 42, and a power transmission provided with an output shaft that transmits rotation to the pinion shaft 11. A motor, such as a servo motor that rotates the transmission shaft in the power transmission device, and a manual handle that rotates the output shaft are provided. Further, the power transmission device is provided with a brake for holding the sluice 20, a clutch for connecting and disconnecting the rotation of the motor, a self-weight lowering lever for lowering the sluice 20 with its own weight, and the like.

2. Description of the Related Art Conventionally, a pin rack having a pin that engages with a pinion is known. The pin rack is fixed to the side plate by welding both ends of the pin, has two side plates that are parallel to each other, has a diameter that can be properly engaged with the teeth of the pinion to be engaged, It is connected by a number of pins arranged at a pitch equal to the tooth pitch, and is a mixture of fixed pins with the ends of the pins welded to the side plate and free rotating pins with the ends not welded to the side plate ( (For example, see Patent Document 1)
JP 2004-190743 A

  However, in the conventional sluice gate drive device for opening and closing the channel, the pin rack that supports the sluice has a pair of side plates spaced between the side plates along the longitudinal direction of the side plates. Some of them are fixed pins that are welded and fixed, and the rest are made up of rotating pins that can be rotated with respect to the side plate. Therefore, when the fixed pin is fixed to the side plate by welding, It was distorted, and as the fixed pin meshed with the pinion, it caused sliding movements on each tooth surface, resulting in reduced transmission efficiency, increased friction on the tooth surface, and increased wear. In addition, when the fixing pin is worn, when the pin is replaced with a new one, the fixing pin cannot be easily removed from the side plate, and only the pin cannot be replaced, or the fixing pin cannot be replaced. If the side plate is forcibly cut, the side plate may be damaged and the side plate itself cannot be used again.

  An object of the present invention is to solve the above-described problem, and a pin rack with a sluice attached to open and close a water gate such as a door body, a valve, and a gate to open and close a channel such as a water channel and a water purification plant. In a sluice gate drive device for opening and closing a channel that engages a pinion that is rotationally driven by a power transmission device to drive the pin rack so that it can reciprocate up and down, the pin can be attached to and detached from a pair of side plates. To improve the transmission efficiency between the rotatable pin and the rotationally driven pinion, reduce the friction of the tooth surface without sliding the tooth surface, especially when the pin is worn or damaged The sluice gate drive device for opening and closing the flow path with a pin rack that does not cause distortion etc. can be replaced with a new pin by simply removing the retaining ring from the pin and there is no welded part as in the past. It is to provide.

The present invention provides a sluice that is provided in a stand installed in a flow path and opens and closes the flow path, a motor that is driven to open and close the flow path by reciprocating the sluice up and down relative to the stand, and / or A manual handle for manually reciprocating the sluice up and down with respect to the stand, a power transmission device provided in the stand for converting and transmitting rotational movement by the motor and / or the manual handle to reciprocating up and down movement of the sluice, and In a sluice gate drive device for opening and closing a flow path comprising a pin rack attached to the sluice and reciprocating vertically with respect to the stand by an output shaft of the power transmission device,
The pin rack is supported by a pinion engaged with a pinion that is rotationally driven by the output shaft of the power transmission device, and a plurality of the pins attached at predetermined intervals and supported in a separated state so as to be vertically movable with respect to the stand. It is composed of a pair of side plates, and all the pins are attached by being rotatably inserted into mounting holes formed in the side plates ,
A locking groove is formed at both ends of the pin inserted into the mounting hole of the side plate, and a retaining ring for locking the pin to the side plate is locked in the locking groove. The present invention relates to a sluice gate drive device for opening and closing a flow path.

Further, the both end portions of the pins in the pin rack is arranged to be freely attached removably to each of the mounting holes of the side plate.

Further, the both ends of the pin to be fitted into the mounting hole of the side plate in the pin rack, the formed smaller in diameter than the central body portion meshing with the pinion, said at a boundary between the main body portion and both end portions Is formed with a stepped portion that engages with the side surface of the side plate.

The pin rack has an attachment hole for attaching the water gate at a lower end portion of the side plate.

  In the sluice gate drive device for opening and closing a flow path provided with this pin rack, as described above, the pin rack is composed of a pair of side plates and pins disposed between the side plates, and all the pins are rotatably attached to and detached from the side plates. When the rotatable pin is engaged with the pinion that is driven to rotate through the power transmission device, the tooth surfaces do not slide or slide with each other. Improves the friction of the pin and pinion tooth surfaces, reduces the wear of the tooth surfaces, and can be easily replaced with new pins when worn, and the pin rack should be fixed to the side plate Because there is no welding, it can be made into a highly accurate product without welding distortion, the durability of the pin rack and pinion itself is improved, and it is rich in safety and reliability.

  Hereinafter, a sluice gate drive device for opening and closing a channel provided with a pin rack according to the present invention will be described with reference to the drawings. This sluice gate drive device for opening and closing a channel provided with a pin rack attaches a sluice gate 20 (hereinafter, generically) such as a gate, a door, and a valve to the pin rack 10 and opens and closes a channel such as a water channel and a water purification plant by the sluice gate 20. Therefore, the pin rack 10 is driven by reciprocating up and down, and the rotation of the motor 1 such as a servo motor and / or the manual handle 7 is rotated to the pinion 9 that connects the power transmission device 14 to the final output shaft 34. The pins 13 and 16 are engaged to move the pin rack 10 up and down. In the embodiment described below, the sluice gate drive device for opening and closing the flow path is provided with drive means for both the motor 1 and the manual handle 7, and the case where the sluice 20 is reciprocated up and down by both drive means will be described. In some cases, however, the sluice 20 can be reciprocated up and down only with the manual handle 7 or the sluice 20 can be reciprocated up and down with only the motor 1.

  This sluice gate drive device for opening and closing the flow path is generally a sluice 20 disposed to open and close the flow path, a motor 1 that is driven to open and close the flow path by reciprocating the sluice 20 up and down, and the sluice 20 is manually operated. A manual handle 7 for reciprocating up and down, and a power transmission device 14 for converting the rotation of the output shaft 34 by the motor 1 or the manual handle 7 to reciprocating up and down movement of the water gate 20 are provided. The pin rack 10 is attached with a sluice 20 and is supported by a stand 15 installed on a base 26 so as to be vertically movable. In this sluice gate driving device for opening and closing the flow path, a self-weight lowering lever 2 for releasing the rotation of the motor 1 and the manual handle 7 and lowering the sluice 20 by its own weight is incorporated in the power transmission device 14. The motor 1 is composed of a servo motor such as an AC servo motor. The power transmission device 14 includes a motor output shaft 22 of the motor 1, a transmission shaft 4 connected to the motor output shaft 22, a non-excitation operation holding brake 3 provided on the transmission shaft 4, and an input shaft 31 connected to the transmission shaft 4. The reduction gear 5 (primary reduction gear), the manual handle 7 connected via the case 39 of the reduction gear 5, and the worm gear 35 operatively connecting the rotation of the manual handle 7 to the output shaft 32 via the case 39 of the reduction gear 5. , A reduction gear 6 (secondary reduction gear) in which an input shaft 33 is connected to an output shaft 32 of the reduction gear 5, a pinion shaft 11 having a pinion 9 connected to an output shaft 34 of the reduction gear 6, and the pinion 9 It comprises a pin rack 10 that constitutes a sluice support means that has interlocking pins 16 and has a sluice 20 attached thereto. That is, in the power transmission device 14, the speed reducers 5 and 6 constituted by a differential gear speed reducer using a differential gear mechanism are arranged in two stages in series in the drive system between the sluice 20 and the motor 1. It is installed. The primary speed reducer 5 includes a case 39 and an input shaft 31 and an output shaft 32 that are incorporated and supported in the case 39. The manual handle 7 is incorporated in a case 39 of the speed reducer 5 via a worm gear 35. The worm gear 35 is housed in the casing 12 fixed to the stand 15, and the rotation by the manual handle 7 is transmitted through the case 39 of the speed reducer 5. The worm gear 35 includes a worm wheel 37 fixed to the case 39 of the speed reducer 5 and a worm shaft 38 provided with a worm 36 that meshes with the worm wheel 37.

  In particular, the pin rack 10 includes a plurality of pins 13 and 16 that mesh with a pinion 9 that is rotationally driven by an output shaft 34 of the power transmission device 14, and a plurality of pins 13 and 16 that are rotatably attached at predetermined intervals and are attached to the stand 15. It is characterized by comprising a pair of side plates 8 supported in a spaced state so as to be movable back and forth up and down. In the pin rack 10, mounting holes 17 into which the end portions 24 and 25 of the pins 13 and 16 are inserted are formed in the side plate 8, and both end portions 24 and 25 of the pins 13 and 16 are respectively formed in the mounting holes 17 of the side plate 8. It is mounted so that it can be attached and removed. Further, the end portions 24 and 25 of the pins 13 and 16 attached to the mounting holes 17 of the side plate 8 of the pin rack 10 are formed to have a smaller diameter than the central body portion 23 that meshes with the pinion 9. In other words, if the diameter of the body portion 23 of the pins 13 and 16 is formed larger than that of the mounting hole 17 formed in the side plate 8, the pair of side plates 8 is provided at the steps on both ends of the body portion 23 of the pins 13 and 16. The portion 47 is regulated by abutting against the side surface 46 of the side plate 8, and the interval between the side plates 8 is positioned and is easily set in a spaced state in parallel. In the pin rack 10, when the pin rack 10 is installed in the sluice gate driving device for opening and closing the flow path, a pair of mounting holes 28 are provided at the end portion 27 which is below the side plate 8 to attach the sluice 20 through the joint 43. Is formed.

The pins 13 and 16 constituting the pin rack 10 are of two types as shown in FIGS. The pin 16 shown in FIG. 3 is formed short so that the end portion 25 does not extend from the side surface 46 of the side plate 8, and is rotatably supported in a state of being inserted into the mounting hole 17 of the side plate 8. It is not locked in the mounting hole 17 and is mounted so as to be freely mounted and removed. Further, the pin 13 shown in FIG. 4 is formed longer than the end 25 of the pin 16 so that the end 24 slightly extends from the side surface 46 of the side plate 8, and the extended end 24 has a locking groove. 19 is formed and is rotatably supported in a state of being inserted into the mounting hole 17 of the side plate 8. A retaining ring 18 is locked to the locking groove 19 formed in the pin 13 in a state where the pin 13 is inserted into the mounting hole 17 of the side plate 8. The pin 13 is attached to the side plate 8 so as not to come out of the attachment hole 17 of the side plate 8 by a retaining ring 18, and the pin 13 is rotatably locked to the attachment hole 17 of the side plate 8 and is fixed to the side plate 8. It can be attached and removed. Since the pin rack 10 has the above-described configuration, if the retaining ring 18 is removed from the pin 13, the pin 13 is removed from the side plate 8. Therefore, if the pair of side plates 8 are separated from each other, the pins 13, 16 are removed from the side plate 8. The pins 13 and 16 can be replaced with new ones.

  An output shaft 34 that is a final output shaft of the power transmission device 14 is a pinion shaft 11 including a pinion 9, and the pin rack 10 includes pins 13 and 16 that mesh with the pinion 9. The pin rack 10 is configured to be smoothly moved up and down by being guided by a roller 45 that is rotatable by a roller pin 44 attached to the stand 15. In order to move the pin rack 10 up and down, the power transmission device 14 applies the rotational force from the motor output shaft 22 of the motor 1 to the pinion shaft 11 integrated with the output shaft 34 of the final reduction stage via the pair of speed reducers 5 and 6. introduce. The motor 1 is composed of an AC servo motor that operates so that the position of the sluice 20 can be adjusted. The case 39 of the speed reducer 5 is rotatably supported on the stand 15 by a bearing 30. The reduction gear 5 decelerates the rotation of the input shaft 31 and is transmitted to the rotation of the output shaft 32. The speed reducer 6 decelerates the rotation of the input shaft 33 and is transmitted to the rotation of the output shaft 34. Further, a position detector that detects the position of the sluice 20 is provided in the power transmission device 14. Since this sluice gate drive device for opening and closing the flow path is provided with a position detector for the sluice 20, not only when the sluice 20 is driven by the motor 1 but also when the sluice 20 is driven by the manual handle 7, The current position of the sluice 20 is always recognized by the controller as information, and the sluice 20 can always be moved to a desired position with high accuracy.

  The manual handle 7 is operatively connected to the power transmission device 14 via a worm gear 35. The worm gear 35 provided on the manual handle 7 includes a worm 36 provided on the worm shaft 38 and a worm wheel 37 that meshes with the worm 36. The worm wheel 37 and the case 39 of the speed reducer 5 are fastened by bolts 29. The rotation of the worm 36 is transmitted while being decelerated and transmitted to the worm wheel 37, but the rotation is not transmitted from the worm wheel 37 to the worm 36. Therefore, when the worm 36 is rotated by the manual handle 7, the worm 36 is rotated. Since the wheel 37 rotates and the rotation of the worm wheel 37 is transmitted to the output shaft 32 through the case 39 of the speed reducer 5, the reduction ratio of the rotation of the manual handle 7 is hardly reduced by the speed reducer 5. In addition, the rotation of the manual handle 7 is decelerated by the worm gear 35.

  Further, the non-excitation operation holding brake 3 holds the sluice 20 in a predetermined position through the power transmission device 14, and lowers the sluice 20 by its own weight lowering lever 2 constituting the brake release mechanism in an emergency and the servo motor 1. Therefore, the lowering of the sluice 20 is controlled by the dynamic brake, and the flow path is closed by the sluice 20. As the servo motor 1, for example, a synchronous motor in which a permanent magnet is provided on a rotor and windings are wound around a stator, that is, a permanent magnet generator / motor is used. The permanent magnet generator / motor functions as a motor mode in which the rotor rotates and torque is generated when a current is passed through the winding wound around the stator, and if the rotor is rotated by its own weight, the stator winding A current is generated in the wire and functions as a generator mode. Therefore, in this embodiment, when the sluice 20 is braked when the sluice 20 descends, the motor 1 is caused to function as a generator mode to act as a dynamic brake for obtaining a braking torque. The braking force can be dissipated as thermal energy or regenerated as electric power.

  In the non-excitation operation holding brake 3, a pair of non-excitation operation holding brakes can be provided in parallel on the transmission shaft 4 connected to the motor output shaft 22 in consideration of safety. The non-excitation operation holding brake 3 has a shifter attached to its case. The shifter is configured to release the non-excitation operation holding brake 3 by manually operating the own weight lowering lever 2. The non-excitation operation holding brake 3 is configured such that when the power is turned on, the motor 1 can rotate and the input shaft 31 of the speed reducer 5 rotates. When the power is turned off, the armature comes into contact with the brake disc, and the brake is applied. The non-excited operation holding brake 3 is, for example, provided with a pair of non-excited operation holding brakes, so that if one brake function fails, the other brake function can be exerted, and the configuration is rich in safety. It becomes. That is, when the brake is applied to the motor 1, one of the two non-excitation operation holding brakes 3 is energized so that the brake is applied, and when one breaks down, the other is energized to activate the brake. It is preferable to set so as to take.

  A sluice gate drive device for opening and closing a channel having a pin rack according to the present invention is used to open and close a channel by a sluice such as a door body, a gate, and a valve body attached to a pin rack driven by reciprocating up and down. Applied.

It is a top view which shows the pin rack provided in the sluice gate drive device for channel opening and closing by this invention. It is a side view which shows the pin rack of FIG. It is a top view which shows the pin with a short edge part in the pin rack of FIG. It is a top view which shows the pin provided with the latching groove in the edge part in the pin rack of FIG. It is a top view which shows the retaining ring latched by the latching groove of the pin of FIG. It is the schematic which shows the sluice gate drive device for channel opening and closing by this invention. It is the schematic which shows the principal part of the Example of this sluice gate drive device for channel opening and closing in a cross section. It is explanatory drawing which shows the relationship between the pin rack and the sluice in the conventional sluice gate drive device for channel opening and closing.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Motor 7 Manual handle 8 Side plate 9 Pinion 10 Pin rack 13, 16 pin 14 Power transmission device 15 Stand 17, 28 Mounting hole 18 Retaining ring 19 Locking groove 20 Water gate 23 Main part 24, 25, 27 End 34 Output shaft 46 Side 47 steps

Claims (4)

A sluice provided on a stand installed in the flow path and opening and closing the flow path, a motor driven to reciprocate the sluice up and down relative to the stand and opening and closing the flow path and / or the stand A manual handle for manually reciprocating the sluice up and down, a power transmission device provided in the stand for converting and transmitting rotational movement by the motor and / or the manual handle to a vertical reciprocation of the sluice, and the power transmission device A sluice gate drive device for opening and closing a flow path comprising a pin rack to which the sluice is attached and reciprocated up and down with respect to the stand by an output shaft of
The pin rack is supported by a pinion engaged with a pinion that is rotationally driven by the output shaft of the power transmission device, and a plurality of the pins attached at predetermined intervals and supported in a separated state so as to be movable up and down with respect to the stand. It is composed of a pair of side plates, and all the pins are attached by being rotatably inserted into mounting holes formed in the side plates ,
A locking groove is formed at both ends of the pin inserted into the mounting hole of the side plate, and a retaining ring for locking the pin to the side plate is locked in the locking groove. sluice drive for flow channel opening and closing, characterized in that it is. 2. The sluice gate drive device for opening and closing a flow path according to claim 1, wherein the both end portions of the pin are respectively detachably mounted in the mounting holes of the side plate. Wherein both ends of the pins inserted into the mounting hole of the side plate, the formed smaller in diameter than the central body portion meshing with the pinion, the side surface of the side plate in the boundary between the both ends and the body portion A sluice drive device for opening and closing a flow path according to claim 1, wherein a stepped portion is formed to be locked to the channel. The sluice gate drive device for opening and closing a flow path according to any one of claims 1 to 3 , wherein an attachment hole for attaching the sluice is formed in a lower end portion of the side plate.

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