JP5851278B2 - Emergency gate device - Google Patents

Description

  The present invention relates to an emergency shut-off gate device that shuts off a gate provided in a water channel such as a river, various water channels, and a reservoir in an emergency.

Conventionally, as a self-weight descending gate provided in a water channel, for example, one described in Patent Document 1 has been proposed. When the emergency shut-off signal is input to the controller, the self-weight descending gate releases the coupling of the electromagnetic clutch and starts a timer. Disengagement of the electromagnetic clutch interrupts the operation of the closing operation mechanism unit including the electric motor and the speed reducer and the door body lifting mechanism unit, and the door body is lowered by its own weight to fully close the sluice gate.
On the other hand, in an abnormal situation where the water level on the upstream side is high, the door is not lowered by its own weight and is not fully closed, so the motor is started by connecting the electromagnetic clutch after a predetermined time by the timer, and the door body is forcibly lowered to lock the water gate Is fully closed.

  Another self-weight drop type gate device is shown in FIG. In the self-weight drop type gate device 1, a worm screw rod 3 meshed with a gear reduction mechanism 6 provided on the switch base 2 is connected to a door body that opens and closes a gate gate of the gate, and the worm screw rod 3 is a wet multi-plate. It is connected to the electric motor 5 through the electromagnetic clutch 4. Then, the water level of the gate is detected, the electric motor 5 is driven by an instruction signal from the controller, and the rotational force is transmitted from the gear reduction mechanism 6 to the worm screw rod 3 via the multi-plate electromagnetic clutch 4, The door is raised and lowered by rotation of 3 to open and close the sluice gate.

  And in the event of an emergency such as a sudden rise in the water level upstream of the sluice gate, the electric motor 5 cannot be driven. In such a case, the multi-plate electromagnetic clutch 4 is separated by discharging from a large storage battery charged in advance, and the door is lowered by its own weight. In addition, when a storage battery is not provided, an operator manually operates a manual quick-close lever 7 provided on the multi-plate electromagnetic clutch 4 to separate the multi-plate electromagnetic clutch 4 and the door is lowered by its own weight. Like to do.

JP 2001-234525 A

However, since the self-weight descending gate described in Patent Document 1 cannot supply electricity during a power failure and neither the electromagnetic clutch nor the motor operates, it is necessary to install a huge storage battery for operating the electromagnetic clutch on the control panel. there were. Since installing a huge storage battery is expensive, it may not be installed.
In addition, in the self-descending gate device 1 shown in FIG. 5, it is expensive to install a large storage battery that discharges to the multi-plate electromagnetic clutch 4 during a power failure. In addition, if the multi-plate electromagnetic clutch is mechanically disconnected by manually operating the manual quick-close lever 7 in the event of a power failure, the failure due to the power failure can be avoided. In some cases, the operator could not be rushed, and the manual quick closing lever 7 could not be operated.

  The present invention has been made in view of such circumstances, and an emergency shut-off gate device capable of shutting off a gate without using manual operation or a large storage battery even in an emergency such as a power failure. The purpose is to provide.

The emergency shut-off gate device according to the present invention transmits the output from the first electric motor as a drive source through the clutch to raise and lower the door body, and when the clutch is shut off, the door body is lowered by its own weight. In the self-weight drop type gate device, the clutch is a reverse operation clutch that constantly transmits output, and has a second motor that is mechanically operated to shut off the clutch, and the clutch is shut off as a power source for the second motor. It is characterized by having a battery or a storage battery that can be charged with a sufficient amount of power .
According to the emergency shut-off gate device of the present invention, when the gate body is lowered by its own weight in an emergency and the gate is closed, even if the power is lost and a power failure occurs, the power stored in the battery or the storage battery is charged first. Since the clutch can be mechanically disengaged by supplying the second electric motor and operating the second electric motor, the door body can be lowered and closed by its own weight.

Further, the electric storage device is preferably an electromotive storage device that does not involve a chemical reaction.
In particular, the capacitor is preferably an electric double layer capacitor.
Since the capacitor is an electric double layer type capacitor, the capacity is small and a direct current is present, but there is enough power to drive the second electric motor by the discharge and disengage the clutch.

Further, it is preferable that the second conductive motivation is a DC type motor.
Electric double layer type capacitor can block the clutch by using those also DC type second conductive motivation for a DC.

According to the emergency shut-off gate device according to the present invention, when closing the gate in the event of an emergency, even if the power is lost due to a power failure, the power stored in the battery or storage battery is supplied to the second electric motor in advance . Since the clutch can be disconnected by operating the electric motor, the door body can be lowered by its own weight and closed.
Moreover, according to the emergency shut-off gate device according to the present invention, there is a battery or a storage battery that can be charged with the power to apply the power to the second motor to the extent that the clutch is disconnected without providing a large storage battery for charging. Therefore, the cost is low.

It is explanatory drawing of the gate provided with the emergency cutoff gate apparatus by embodiment of this invention. It is a principal part block diagram of the emergency cutoff gate apparatus shown in FIG. It is sectional drawing which shows the clutch arm operation mechanism by the electromagnetic clutch shown in FIG. It is principal part sectional drawing which shows the electromagnetic clutch of the emergency cutoff gate apparatus shown in FIG. It is a principal part perspective view of the conventional emergency cutoff gate apparatus.

Hereinafter, an emergency shut-off gate device according to an embodiment of the present invention will be described with reference to the accompanying drawings.
In FIG. 1, an automatic descent gate 11 is installed on a natural flow-down gate 10 installed in a water channel H provided in a river or a reservoir. On the downstream side of the gate 10 in the water channel H, facilities such as a pump station and a treatment plant (not shown) are installed. The automatic lowering gate 11 includes an emergency shut-off gate device 12 according to an embodiment of the present invention, and the automatic lowering gate device 11 is opened and closed by an operation panel 13.
1 and 2 has a door body 15 attached to the lower end of a spindle 14, and the door body 15 is raised and lowered along a guide wall 10a of the gate 10 and a sluice 10b provided on the gate 10. Open and close. In addition, a water level detector 16 for detecting the water level of the water channel H is attached to the gate 10 on the upstream side.

  In FIG. 2, the emergency shut-off gate device 12 includes, for example, a three-phase motor 18 as a drive source for raising and lowering the door body 15, and a worm gear 20 is fixed to the drive shaft 19 of the three-phase motor 18. A manual handle 21 is connected to the other end. A first connecting shaft 23 and a second connecting shaft 24 are connected between the worm gear 20 and the spindle 14 of the door body 15 via a clutch, for example, a reverse operation type clutch 25. A worm wheel 27 that meshes with the worm gear 20 is provided at the other end of the first connecting shaft 23, and a rack gear 28 that meshes with the worm rack 14 a of the spindle 14 is provided at the other end of the second connecting shaft 24. .

In the normal state, the reverse operation type clutch 25 transmits the output of the three-phase motor 18 to the spindle 14 via the first connection shaft 23 and the second connection shaft 24. In an emergency, the reverse operation type clutch 25 transmits the output in the reverse operation type clutch 25. An emergency shut-off mechanism 30 for shutting off is installed. The emergency shut-off mechanism 30 transmits an electric double layer capacitor 31 as a capacitor, a DC motor 32 that is driven by power supplied from the capacitor 31, and an output of the DC motor 32 to the reverse operation clutch 25. And a mechanical transmission mechanism 33 that blocks output transmission.
Unlike a conventional battery using a DC power supply, the electric double layer capacitor 31 is an electromotive capacitor that does not involve a chemical reaction, can be charged / discharged in a short time, and has little deterioration due to charge / discharge. The voltage changes linearly during discharge.

For example, as shown in FIG. 2, the transmission mechanism 33 has a first gear 35 provided on the drive shaft 34 of the DC motor 32 and a second gear 36 meshing with the first gear 35 fixed to each other. And an actuating shaft 37 for transmitting the rotational force to the reverse actuating clutch 25.
A manual operation lever 38 is provided at the tip of the drive shaft 34 for manually applying a rotational force to the operation shaft 37 to disengage the reverse operation clutch 25.

Next, the reverse operation type clutch 25 will be described with reference to FIGS.
The reverse operation type clutch 25 has a known configuration. That is, in FIG. 3, the operating shaft 37 extends into the reverse operating clutch 25, and a cam 39 is fixed to the tip thereof. A substantially arc-shaped clutch arm 41 provided on the armature 40 is connected to the cam 39.
The structure of the reverse operation type clutch 25 shown in FIG. 4 will be described schematically. The coil 43 is molded with resin on the electromagnet main body 42 to form an annular electromagnet.

  In addition, an outer disk 46 and an inner disk 47 are alternately fitted inside the outer body 45 facing the electromagnet main body 42 to form a disk group 48, and the armature provided on the electromagnet main body 42 side of the disk group 48. 40 is fitted to the guide pin 49 and the ring so as to be movable in the axial direction. The armature 40 is always pressed against the disk group 48 side by a pressing spring 50 provided in the electromagnet main body 42. A ring-shaped adjustment nut 51 is screwed into a boss 52 provided on the inner peripheral side of the disk group 48 on the opposite side of the disk group 48 from the armature 40.

In this reverse operation type clutch 25, when the coil 43 is not energized, the disk group 48 is pressed by the armature 40 and the adjusting nut 51 by the pressing spring 50. The rotational force is transmitted to the second connecting shaft 24. When the coil 43 is energized by a brush (not shown), the armature 40 is attracted to the direction of the arrow A, that is, the electromagnet main body 42 side, and the friction force of the disk group 48 disappears. Shielded from transmission of rotational force.
When a power failure occurs, the electric power of the electric double layer type capacitor 31 in the emergency shut-off gate device 12 is supplied to the DC motor 32, and the operating shaft 37 rotates, so that the cam 39 rotates together with the clutch arm 41. In order to move the armature 40 in the direction of arrow A, the reverse-acting clutch 25 is blocked from transmitting the rotational force, and the rotational force of the first connecting shaft 23 is not transmitted to the second connecting shaft 24.

  Therefore, the electric power of the electric double layer type capacitor 31 for driving the DC motor 32 causes the armature 40 to move to the electromagnet main body 42 side by rotating the cam 39, thereby interrupting the rotational force transmission of the reverse operation type clutch 25. It should be at least as large as the degree. Therefore, the electric double layer capacitor 31 may be a small capacitor (capacitor) of an electromotive system that does not involve a chemical reaction. Moreover, a normal small storage battery may be used.

The emergency cutoff gate device 12 according to the present embodiment has the above-described configuration, and the operation thereof will be described next.
In the automatic lowering gate 11, in the normal operation, the reverse operation type clutch 25 is configured such that a disk group 48 in which outer disks 46 and inner disks 47 are alternately fitted is pressed by an armature 40 and an adjusting nut 51. Is transmitted from the first connecting shaft 23 to the second connecting shaft 24 via the reverse operation clutch 25 by frictional force.
Therefore, the water level of the gate 10 is measured by the water level detector 16, the rotational force of the three-phase motor 18 is controlled by a signal instructed from the operation panel 13 according to the water level, and the door 15 is moved up and down via the spindle 14. The lift position is controlled. Thus, the water level of the gate 10 is controlled by increasing or decreasing the opening area of the sluice 10b.

When the water level of the gate 10 rises during a disaster such as heavy rain or a typhoon, when the coil 43 in the electromagnet main body 42 is energized by an instruction signal from the operation panel 13, the armature 40 in FIG. Since the frictional force of the disk group 48 in the reverse operation clutch 25 disappears in the direction of the arrow A, the transmission of the rotational force from the three-phase motor 18 is interrupted by the reverse operation clutch 25. Then, the door body 15 is lowered by its own weight and the sluice 10b is closed.
As a result, the downstream side of the water channel H is prevented from increasing and becoming an abnormal water level, and downstream facilities such as pumping stations and treatment plants are protected from inundation.

By the way, if the power is lost due to a power failure at the time of a disaster, the operation of the operation panel 13 and the three-phase electric motor 18 is interrupted, so that the reverse actuating clutch 25 cannot be interrupted to automatically lower the door body 15. Even if the water level of the gate 10 suddenly rises, the reverse operation clutch 25 is not disconnected because electricity is not supplied to the reverse operation clutch 25.
In this case, when a power failure is detected by the electric double layer capacitor 31 in the charged state provided in the emergency cutoff gate device 12, a direct current is discharged toward the direct current motor 32. When the DC motor 32 is rotationally driven in response to this discharge, the first gear 35 provided on the drive shaft 34 is rotated, and the second gear 36 meshing with the first gear 35 is interlocked with the operation shaft 37. Rotated.

Then, the cam 39 fixed to the tip of the operating shaft 37 rotates, and the arm 40 is pushed in the same direction by pushing the crack arm 41 connected thereto in the direction of arrow A, that is, in the direction of the electromagnet main body 42.
Thereby, the mutual frictional force of the disk group 48 in which the outer disk 46 and the inner disk 47 of the reverse operation clutch 25 are alternately fitted disappears, and the reverse operation clutch 25 is separated and disconnected. Therefore, the door body 15 is lowered by its own weight, and the sluice 10b can be closed.

When the worker is in the vicinity of the automatic lowering gate 11 or when the door body 15 needs to be lowered after the electric double layer capacitor 31 is discharged, the manual operation lever 60 is operated. If the cam 39 is rotated and the clutch arm 41 and the armature 40 are moved to the electromagnet main body 42 side, the reverse operation clutch 25 can be disconnected.
The operation of the DC motor 32 may be activated automatically upon detection of a power failure, or may be activated by turning on a separate operation switch based on a timer or human judgment.

As described above, according to the emergency cutoff gate device 12 according to the present embodiment, when the water level of the gate 10 rises at the time of disaster such as a typhoon, the operation panel 13 and the three-phase motor 18 are activated when the power is lost due to a power failure. Since the reverse operation type clutch 25 is shut off and the door body 15 cannot be lowered automatically, the emergency shut-off gate device 12 according to the present embodiment also has an electric double layer capacitor 31 in advance in this case. Since the charged electric power can be supplied to the DC motor 32 to operate the DC motor 32 and the reverse operation clutch 25 can be disconnected, the door body 15 can be lowered by its own weight and closed.
Moreover, according to the emergency shut-off gate device 12 according to the present embodiment, there is an electric double layer type capacitor 31 that can provide power enough to shut off the reverse operation clutch 25 without providing a large storage battery and charging it. Therefore, a small electric double layer capacitor 31 can be used and the cost is low.

In addition, this invention is not limited to the above-mentioned embodiment, In the range which does not change the summary of this invention, an appropriate change is possible, and these are all contained in this invention. Hereinafter, modifications of the present invention will be described, but the same or similar parts and members as those of the above-described embodiment will be denoted by the same reference numerals, and description thereof will be omitted.
For example, in the emergency shutoff gate device 12 shown in FIG. Even in this case, the reverse operation type clutch 25 can be disconnected by the discharge of the direct current from the electric double layer type capacitor 31 at the time of a power failure.

Even when the manual operation lever 38 is provided, the manual operation lever 38 is not limited to the configuration in which the manual operation lever 38 is attached to the drive shaft 34 connected to the DC motor 32, and may be attached to the operating shaft 37.
In the above-described embodiment, the electromagnetic reverse operation clutch 25 that can be interrupted by an electromagnet is used as the clutch. However, a mechanical reverse operation clutch that is interrupted by a mechanical operation may be used.

DESCRIPTION OF SYMBOLS 10 Gate 11 Automatic descending gate 12 Emergency shut-off gate device 14 Spindle 15 Door 18 Three-phase motor 23 First connecting shaft 24 Second connecting shaft 25 Reverse acting clutch 31 Electric double layer capacitor 32 DC motor 38 Manual operation lever 39 Cam 40 Armature 42 Electromagnet body 46 Outer disk 47 Inner disk 48 Disk group

Claims (4)

In an automatic lowering gate device in which an output from a first electric motor as a drive source is transmitted through a clutch to raise and lower the door body, and when the clutch is disconnected, the door body is lowered by its own weight. ,
The clutch is a reverse action clutch for transmitting the output at all times, the charging degree of power comprises a second electric motor, to cut off the clutch as a power supply of said second electric motor to be cut off by mechanically operating the clutch emergency shutoff gate device characterized by comprising a capacitor or a storage battery can.   The emergency shut-off gate device according to claim 1, wherein the battery is an electromotive battery that does not involve a chemical reaction.   The emergency shut-off gate device according to claim 2, wherein the electromotive power storage device without chemical reaction is an electric double layer capacitor. It said second conductive motive emergency shutdown gate apparatus according to claim 2 or 3 which is a DC type motor.

Images