JP7028651B2 - Switchgear - Google Patents

Description

The present invention relates to a switchgear system in which a plurality of switchgear bodies during a closing operation are stopped by contact with an obstacle, and particularly to a switchgear system suitable as a shutter device system for fire and smoke prevention purposes.

Conventionally, a switchgear for disaster prevention and smoke prevention automatically closes the opening / closing body when a disaster prevention signal is input, and prevents the spread of flames and smoke by the fully closed opening / closing body (. For example, see Patent Document 1).
Further, in the switchgear system provided with a plurality of switchgear for disaster prevention and smoke prevention as described above, when a disaster prevention signal is received, all the switchgear are closed at almost the same time, and any of the switchgear is closed. When the switchgear of the switchgear comes into contact with or is in close proximity to an obstacle, the state is detected by the obstacle detection sensor, and the closing operation of all switchgear is stopped to ensure safety. Then, on the condition that the obstacle is removed from all the switchgear and the detection signal of the obstacle detection sensor disappears, the closing operation of all the switchgear is restarted substantially at the same time.

However, according to the above configuration, when all the switchgear is stopped due to obstacle detection, all the switchgear will continue to be stopped unless the removal of the obstacle is confirmed for all the switchgear. Become. Therefore, the state in which all the opening / closing bodies are partially opened continues, which may promote the spread of flames, smoke, and the like.

Japanese Unexamined Patent Publication No. 2000-87667

The present invention has been made in view of the above-mentioned conventional circumstances, and the subject thereof is that when a disaster or the like occurs, a plurality of automatically closed switchgear stops due to obstacle detection, and the plurality of switchgear opens. It is an object of the present invention to provide a switchgear system capable of reducing the continuation of a stopped state.

The technical means for solving the above problems are a plurality of switchgear held in an open state, an automatic closing means for closing the plurality of switchgear when a predetermined event occurs, and the switchgear. In an opening / closing device system including an obstacle detecting means for detecting an obstacle on the closing direction side for each opening / closing body, the obstacle detecting means detects an obstacle with any of the opening / closing bodies after the automatic closing means is activated. A first determination is made as to whether or not the state is in the state, and if it is determined in the first determination that the state is in the sensed state, all the opening / closing bodies in the closing operation are stopped or inverted and then stopped, and then the above-mentioned A second determination is made as to whether or not the closing operation is stopped halfway for each switchgear and the obstacle sensing means is in the non-sensing state, and the second determination determines that the obstacle sensing means is in the non-sensing state. When it is determined, the opening / closing body corresponding to the opening / closing body is closed.

Since the present invention is configured as described above, it exhibits the effects described below.
After all the opening / closing bodies 10 have started the closing operation by the automatic closing means, if any of the opening / closing bodies is in the obstacle detection state, all the opening / closing bodies are stopped or reversed. After that, the opening / closing body in the state where the closing operation is stopped halfway and is in the non-sensing state resumes the closing operation.
Therefore, in the event of a disaster or the like, it is possible to reduce the situation where a plurality of automatically closed open / close bodies are stopped due to obstacle detection and the open / stop state of the plurality of open / close bodies is continued.

It is a schematic diagram which shows an example of the switchgear system which concerns on this invention. It is a front view which shows an example of a switchgear. It is a flowchart which shows the control operation in the switchgear system. It is the flowchart of the part following the flowchart of FIG. It is a schematic diagram which sequentially shows an example of the operation of a switchgear body in the switchgear system. It is a schematic diagram which sequentially shows an example of the operation of a switchgear body in the switchgear system. It is a flowchart which shows the main part of the control operation about the other example of the switchgear system which concerns on this invention. It is a table which shows the priority order of the closing operation resumption about the switchgear system. It is a schematic diagram which sequentially shows an example of the operation of a switchgear body in the switchgear system.

In one embodiment for carrying out the present invention, a plurality of opening / closing bodies held in an open state, an automatic closing means for closing the plurality of opening / closing bodies when a predetermined event occurs, and a method of closing the opening / closing body, rather than the opening / closing body. In an opening / closing device system including an obstacle detecting means for detecting an obstacle on the closing direction side for each opening / closing body, after the automatic closing means is activated, the obstacle detecting means is detected by any of the opening / closing bodies. When the condition is satisfied, all the opening / closing bodies in the closing operation are stopped or inverted and then stopped, and then the closing operation is stopped halfway for each opening / closing body. A second determination was made as to whether or not the obstacle sensing means was in a non-sensing state, and when the condition was satisfied, the corresponding opening / closing body was closed.

According to this configuration, when a predetermined event occurs, the automatic closing means is activated, and the plurality of opening / closing bodies held in the open state start the closing operation. Then, when the obstacle sensing means is in the sensing state by any of the opening / closing bodies during the closing operation of the plurality of opening / closing bodies, all the opening / closing bodies in the closing operation are stopped or inverted and then stopped. After that, for each opening / closing body, it is determined whether or not the closing operation is stopped halfway and the obstacle detecting means is in the non-sensing state, and the opening / closing body satisfying the conditions restarts the closing operation. do.

Further, as one embodiment for improving the safety when resuming the closing operation, if the condition of the second determination is satisfied, the corresponding opening / closing body is closed after a predetermined time has elapsed.

Further, as a preferable mode in which the opening / closing body is stopped accurately at the fully closed position, when the condition of the first judgment is not satisfied, a third judgment is made as to whether or not all the opening / closing bodies are in the closing operation. When the condition of the third judgment is satisfied, each opening / closing body during the closing operation is stopped when the opening / closing body is fully closed, and when the condition of the third judgment is not satisfied, the process proceeds to the second judgment. Migrate processing.

Further, in order to more safely resume the closing operation of the opening / closing body that has been stopped halfway, if the condition of the second determination is satisfied, the corresponding opening / closing body is closed according to a predetermined priority order.

Further, as a specific form for safely resuming the closing operation of the opening / closing body that has been stopped halfway, the priority order is such that the opening / closing body farther from the opening / closing body in the sensed state by the obstacle detecting means is closed first. Is set to.

In the present specification, the "opening / closing body thickness direction" means the thickness direction of the opening / closing body in the closed state. Further, the "opening / closing width direction" means a direction orthogonal to the opening / closing direction of the opening / closing body, not a thickness direction of the opening / closing body. Further, the "opening / closing direction" means a direction in which the opening / closing body slides to open / close the opening or the space.
<Specific embodiment>

Hereinafter, embodiments in which the above embodiments are more embodied will be described in detail with reference to the drawings.
FIG. 1 is a schematic configuration diagram of a switchgear system according to the present invention.
This switchgear system includes a plurality of (three according to the illustrated example) switchgear 1, 2, and 3 and a control unit 4 for controlling these switchgear.

As shown in FIG. 2, the opening / closing devices 1, 2 and 3 have an opening / closing body 10 that slides in the opening / closing direction (vertical direction in the drawing) to open / close, and a width direction (left / right in the drawing) of the opening / closing body 10. It is provided with a guide rail 20 that surrounds the end of the opening / closing direction (direction) and guides the opening / closing direction (vertical direction in the drawing), and a winding device 30 that winds up and unwinds the opening / closing body 10 on the opening / closing direction side.
In the following description, when necessary, the opening / closing body 10 of the opening / closing device 1 is referred to as an opening / closing body A, the opening / closing body 10 of the opening / closing device 2 is referred to as an opening / closing body B, and the opening / closing body 10 of the opening / closing device 3 is referred to as an opening / closing body C. There is also.

In the opening / closing body 10, a plurality of slats formed by bending a horizontally long, substantially rectangular fireproof metal plate are arranged in parallel in the opening / closing direction of the opening / closing body, and connected so as to rotate between adjacent slats. It is provided with an opening / closing body main body 11 and a seat plate 12 connected to an end portion of the opening / closing body main body 11 in the closing direction.
Then, the opening / closing body 10 is provided with an obstacle detecting means 13 for detecting an obstacle x on the closing direction side of the opening / closing body.

The obstacle detecting means 13 has a discharging portion 13a that projects in the closing direction from the closing direction end portion of the opening / closing body 10 on one end side in the width direction of the opening / closing body 10 to discharge the object sensing medium q, and the width direction of the opening / closing body 10. The other end side of the opening / closing body 10 is provided with a capturing unit 13b that protrudes from the closing direction end of the opening / closing body 10 in the closing direction to capture the object sensing medium q, and the object sensing medium q is shielded by the obstacle x to capture the object sensing medium q. When the object sensing medium q is not captured, an obstacle sensing state is set and a predetermined obstacle sensing signal (for example, a contact signal, a voltage signal, etc.) is output.

For example, a so-called photoelectric sensor that emits and captures a light ray as an object sensing medium q is used in the emission unit 13a and the capture unit 13b.
The discharging portion 13a is fixed to the closing direction end portion side (lower end side according to the illustrated example) of the sliding body provided so as to slide by a predetermined amount in the opening / closing direction relative to the opening / closing body 10. Similarly, the catching portion 13b is fixed to the end portion side in the closing direction of the slide body provided so as to slide a predetermined amount in the opening / closing direction relative to the opening / closing body 10.
When the opening / closing body 10 is fully closed, the releasing portion 13a and the capturing portion 13b retreat in the opening direction with respect to the opening / closing body 10 due to contact with the seating target portion p.

The guide rail 20 is a member having a substantially U-shaped cross section that surrounds the widthwise end portion of the opening / closing body 10, and is arranged between the seating target portion p when the opening / closing body 10 is fully closed and the winding device 30. There is. The guide rail 20 protects the discharging portion 13a and the capturing portion 13b so as to surround them in a substantially U-shape.

The take-up device 30 includes a take-up shaft 31 that winds up and unwinds the opening / closing body 10, and an opening / closing device 32 that drives, rotates, and brakes the take-up shaft 31 via a power transmission means such as a chain and a sprocket. The automatic closing device 33 that releases the braking state by the opening / closing machine 32 and automatically closes the opening / closing body 10 is provided.

The switch 32 is, for example, a switch having a well-known structure shown in Japanese Patent Application Laid-Open No. 01-118084, and is a motor 32a for driving and rotating the take-up shaft 31 and a brake device 32b for braking the rotational force of the motor 32a. And an operation lever 32c for operating the brake device 32b from the outside.
The switch 32 keeps the output shaft of the motor 32a in a restrained state by the urging force of an internal spring (not shown) when the brake device 32b is not energized, and when the brake device 32b is energized, or When the operation lever 32c is swung by the automatic closing device 33 described later, the restrained state of the motor 32a is released.

The automatic closing device 33 constitutes an automatic closing means for closing the opening / closing body 10 when a predetermined event (for example, a disaster prevention signal or the like) occurs, and is disclosed in, for example, Japanese Patent Application Laid-Open No. 2005-76366. An automatic closing device is applied.
The automatic closing device 33 operates a drive source (for example, an electric motor, an electromagnetic solenoid, etc.) by a command from the control unit 4 based on the input of a disaster prevention signal, and the operation lever 32c of the switch 32 is operated by the power of the drive source. Operate to one side to release the switch 32 from the restrained state by the brake device 32b. In this open state, the output shaft of the motor 32a in the switch 32 and the take-up shaft 31 interlocked with the output shaft freely rotate, and the open / close body 10 wound around the take-up shaft 31 is unwound by its own weight to close the operation. do.
Further, the automatic closing device 33 operates the operation lever 32c in the opposite direction when a stop command is given from the control unit 4 during the closing operation, restrains the switch 32, and closes the switch 10. When the operation is stopped and a re-close command is issued from the control unit 4 during this stop, the operation lever 32c is operated again to the one side to release the restrained state of the switch 32 and the switch is released. The closing operation of 10 is restarted.

Further, each of the opening / closing devices 1, 2 and 3 includes an operation unit (operation switch, remote controller, etc.) (not shown), a control circuit for controlling the opening / closing body 10 according to a signal from the operation unit, and an opening / closing body 10. A fully closed sensing means (for example, a limit switch, an encoder device, etc.) for detecting a fully open state or a fully closed state is provided.

Further, the control unit 4 is an electronic circuit (so-called microcomputer circuit or the like) that functions a central processing unit (CPU) based on a program stored in a storage device (not shown), and is used for a disaster prevention signal input in the event of a disaster or the like. Feedback signals from the opening / closing devices 1, 2 and 3 (for example, a signal of the obstacle detecting means 13 and a signal indicating an opening / closing state of the opening / closing body 10) are processed, and each opening / closing device 1 is processed according to the processing result. , 2 and 3 are sent control commands (see Fig. 1).
In the example shown in FIG. 1, the control unit 4 has a configuration separate from the plurality of switchgear 1, 2, and 3, but it may be provided in a part of the plurality of switchgear 1, 2, and 3. It is possible to combine a plurality of control circuits provided for each of the switchgear 1, 2, and 3.
Further, the power supply of the control unit 4 normally uses a commercial power supply, but can be automatically switched to a battery power supply in the event of a disaster or the like.

Next, an example of the control operation by the switchgear system having the above configuration will be described in detail with reference to the flowcharts (see FIGS. 3 and 4).
First, in the initial state, all the switchgear 1, 2, and 3 are in a state in which the switchgear 10 (A, B, C) is fully opened, and this fully open state is maintained by the brake device 32b of each switchgear 32. To.

Then, the control unit 4 waits for the input of the disaster prevention signal due to a disaster or the like (step 1), and when the disaster prevention signal is input, proceeds to the next step 2 (see FIG. 3).

In step 2, the closing operation of all the switchgear 10 (A, B, C) of the switchgear 1, 2 and 3 is started. More specifically, the control unit 4 issues a command to each of the opening / closing devices 1, 2 and 3 to operate the automatic closing device 33. According to this command, each automatic closing device 33 releases the restrained state of the switch 32, and closes each corresponding switch 10 by its own weight.

Next, in step 3, it is determined whether or not the obstacle sensing means 13 is in the sensing state by any of the opening / closing bodies 10 (first determination), and when this condition is satisfied (any obstacle). If the sensing means 13 is in the sensing state), the process proceeds to the next step 5, otherwise the process proceeds to step 4a.

In step 4, it is determined whether or not the obstacle detecting means 13 includes the opening / closing body 10 in the closing operation in the opening / closing body 10 in the sensed state, and if this condition is satisfied, the process to the next step 5 is performed. Migrate, otherwise jump to step 6.
In this step 4, the determination of whether or not the switch 10 is in the closing operation is determined, for example, by the presence or absence of a contact signal of the relay that operates each automatic closing device 33, or by rotating the switch 32. This may be done depending on the presence or absence of a signal from the encoder device provided so as to output.

Then, in step 5, all the opening / closing bodies 10 during the closing operation are stopped.
More specifically, the control unit 4 sends a command to release the automatic closing device 33 to the opening / closing device in which the opening / closing body 10 is in the closing operation, and the opening / closing device 32 is released by the release operation of the automatic closing device 33. The operation lever 32c is operated in the opposite direction (brake operation direction) to restrain the switchgear 32 and stop the rotation of the take-up shaft 31 to stop the closing operation of the switchgear 10.

According to the steps 4 and 5, if the step 4 is executed immediately after the closing operation of all the opening / closing bodies 10 is started in the step 2, the closing operation is stopped for all the opening / closing bodies 10. conduct. Further, if only a part of the opening / closing body 10 is in the closing operation after the steps 6 to 20 described later have passed, the closing operation is stopped for the part of the opening / closing body 10 in the closing operation. ..

In the next step 6, it is determined whether or not the switchgear 10 (A) of the switchgear 1 is in the halfway stopped state and the obstacle detecting means 13 is in the non-sensing state (OFF state) (second determination). If this condition is satisfied, the process proceeds to the next step 7, and if not, the process jumps to step 10.
The determination as to whether or not the opening / closing body 10 is in the halfway stopped state may be determined based on the status signals of the automatic closing device 33 and the fully closed sensing means. For example, the contact signal of the relay that operates each automatic closing device 33 may be determined. Is OFF, and when the sensing signal by the fully closed sensing means is OFF, it may be determined that the opening / closing body 10 is in the halfway stopped state.

In the next step 7, it is determined whether or not the timer Ta corresponding to the switchgear A of the switchgear 1 has been activated (in other words, whether or not it has already been activated), and if it has not been activated, the next step 8 If not, the process is transferred to step 9, and the process is jumped to step 9.

Then, in step 8, the operation of the timer Ta is started, and the process proceeds to the next step 9.

In step 9, it is determined whether or not the count by the timer Ta has reached the predetermined set time, and if it reaches the predetermined time, the process proceeds to the next step 10, and if not, the process proceeds to step 11. Jump.

In step 10, the closing operation of the opening / closing body 10 (A) is restarted by the operation of the automatic closing device 33 corresponding to the opening / closing body 10 which is stopped in the middle.
The set time of the timer Ta is appropriately set so that the closing operation of the opening / closing body 10 is restarted after the obstacle x on the closing direction side of the opening / closing body 10 is completely removed, and is set to, for example, about several seconds. Will be done.

Then, in the next steps 11 to 15, substantially the same processing as in steps 6 to 10 is performed on the switchgear B of the switchgear 2.
Further, in the next steps 16 to 20, substantially the same processing as in steps 6 to 10 is performed on the switchgear C of the switchgear 3, and the processing proceeds to step 21 (see FIG. 4).

Further, in step 4a branched in step 3, whether all the switchgear 10s (A, B, C) are in the closing operation based on the status signals of the automatic closing devices 33 of the switching devices 1, 2, and 3. A determination (third determination) is made, and if this condition is satisfied, the process proceeds to step 21 (see FIG. 4), and if not, the process proceeds to step 6.

Then, in step 21 shown in FIG. 4, it is determined whether or not the switchgear A of the switchgear 1 is in the fully closed state based on the sensing signal of the fully closed sensing means, and if this condition is satisfied, the following is performed. The process proceeds to step 22, otherwise the process jumps to step 23.

In step 22, the closing operation of the opening / closing body 10 is stopped. More specifically, by operating the automatic closing device 33, the operating lever 32c of the automatic closing device 33 is returned in the opposite direction (brake operation direction), and the output shaft and the take-up shaft 31 of the switch 32 are the brake device 32b. Restrained by non-rotation.
Although the description on the flowchart is omitted, when it is determined in step 22 that the opening / closing body 10 is fully closed, the detection signal by the obstacle detecting means 13 is invalidated. According to this process, it is possible to prevent the obstacle detecting means 13 from recognizing the opening / closing body 10 as an obstacle in the fully closed state of the opening / closing body 10.

In steps 23 to 24 and steps 25 to 26, substantially the same processing as in steps 21 to 22 is performed corresponding to each of the opening / closing body B and the opening / closing body C.

In the next step 27, it is determined whether or not all the switchgear 10s are in the fully closed state based on the sensing signals of the fully closed sensing means for each of the switchgear 1, 2, and 3, and this condition is satisfied. In that case, the process proceeds to the next step 28, and if not, the process returns to the step 3 (see FIG. 3).

In the next step 28, the process waits for the recovery operation, and if there is a recovery operation, the process proceeds to the next step 29.
In step 29, the corresponding automatic closing device 33 is restored for all the opening / closing bodies 10 (A, B, C).

Here, the recovery operation refers to a special operation (for example, an operation of pressing ON and OFF at the same time) for an operation unit (operation switch, remote controller, etc.) (not shown) or a return operation unit (not shown) of the automatic closing device 33. It means direct operation, etc.
When the restoration operation is performed, the operating portion of the automatic closing device 33 is returned to the initial position, and the operating lever 32c of the switch 32 is also returned to the initial position accordingly. Therefore, if the opening / closing body 10 is fully opened electrically or manually after the restoration operation is performed, the opening / closing body 10 in the fully opened state can be closed again by inputting a disaster prevention signal (step 1). Become. Further, if the opening / closing body 10 is fully opened electrically or manually without performing the restoration operation, the opening / closing body 10 will close due to its own weight even if the disaster prevention signal is not input again. ..

Next, with respect to the switchgear system, how the switchgear 10 operates when there is an actual disaster prevention signal will be described in detail by a specific example shown in FIG.

First, in the initial state in which the switchgear A, B, and C of all the switchgear 1, 2, and 3 are maintained in the fully open state, if a disaster prevention signal is input, all the switchgear are processed by steps 1 and 2. A, B, and C start the closing operation (see FIG. 5A).

During the closing operation, for example, as shown in FIG. 5B, when the opening / closing body A is close to the obstacle x1 on the closing direction side, it is determined that any of the opening / closing bodies 10 is turned on for obstacle detection. (Step 3), and further, it is determined that the opening / closing body A in which the obstacle detection is turned on includes the opening / closing body in the closing operation (step 4), and all the opening / closing bodies A, B, and C in the closing operation are included. It is stopped (step 5).

In this state, the condition of the next step 6 (the opening / closing body A is in the halfway stopped state and the obstacle detection is OFF) is not satisfied, so the process proceeds to step 11. Then, as shown in FIG. 5B, when there is no obstacle on the closing direction side of the opening / closing bodies B and C, first, in step 11, the opening / closing body B is in the halfway stopped state and the obstacle is detected. It is determined that it is OFF, the timer Tb is activated (steps 12 to 13), and further, in step 16, it is determined that the opening / closing body C is in the halfway stopped state and the obstacle detection is OFF, and the timer Tc is set. It works (steps 17-18).
Then, when the counts of the timers Tb and Tc are completed while the processes of steps 3 to 29 are repeated, the opening / closing bodies B and C start the closing operation by executing the steps 15 and 20. That is, as shown in FIG. 5 (c), while the opening / closing body A is stopped due to the obstacle detection, the other opening / closing bodies B and C that have not detected the obstacle start the closing operation.

Then, during the closing operation of the opening / closing bodies B and C, for example, when the opening / closing body B is close to another obstacle x2 as shown in FIG. 5 (d), all the opening / closing bodies B in the closing operation are again performed. , C stop (steps 3 to 5).
Further, for example, as shown in FIG. 5E, when there is no obstacle on the closing direction side of the opening / closing body C, the opening / closing bodies A and B are opened / closed after a predetermined time with the opening / closing bodies A and B stopped. Body C initiates the closing action (steps 6-20).

Further, as shown in FIGS. 6 (e) and 6 (f), in a state where the opening / closing bodies A and B are stopped due to obstacle detection and the opening / closing body C is closed, for example, both obstacles x1 and x2 are removed. If so, the processes of steps 3 to 15 are sequentially executed, so that the opening / closing bodies A and B start the closing operation, respectively, as shown in FIG. 6 (g).
During the closing operation, the fully closed open / close bodies A, B, and C are sequentially stopped by executing the processes of steps 21 to 26.

Then, when all the opening / closing bodies A, B, and C are fully closed, the presence / absence of the above-mentioned recovery operation is determined (step 28), and when the recovery operation is performed, the corresponding automatic closing of all the opening / closing bodies 10 is performed. The device 33 is restored.

Therefore, according to the switchgear system having the above configuration, when all the switchgear 10s (A, B, C) are in the closing operation due to the disaster prevention signal and the obstacle x approaches any of the switchgear 10. First, all the opening / closing bodies 10 (A, B, C) can be stopped to ensure safety.
After that, with respect to the opening / closing body 10 that does not detect an obstacle, the closing operation can be resumed after ensuring the safety after a lapse of a predetermined time. Therefore, the opening / closing body 10 that does not detect an obstacle is maintained in an open state, and it is possible to prevent the spread of flames and smoke due to a disaster or the like.
Further, during the reclosing operation of the opening / closing body 10 that does not detect an obstacle, if the obstacle detecting means 13 of the opening / closing body 10 detects an obstacle, all the closing operations including the opening / closing body 10 are performed. The opening / closing body 10 can be stopped again to ensure safety.
In addition, when an obstacle is removed from below the opening / closing body 10 that has stopped due to obstacle detection, the stopped opening / closing body 10 is quickly closed after ensuring safety after a lapse of a predetermined time. can do.

Next, another switchgear system according to the present invention will be described. Since this switchgear system is a partial modification of the control content of the switchgear system described above, the changed portion will be mainly described in detail, and duplicate description will be omitted.
The other switchgear system adds steps 9a, 9b, 9c, steps 14a, 14b, 14c and steps 19a, 19b, 19c to the processing by the control unit 4 (see FIG. 3), as shown in FIG. It has a structure like that.

In step 9a after step 9, it is determined whether or not there is an opening / closing body 10 for which obstacle detection is ON (the obstacle detecting means 13 is in a sensing state), and when there is an opening / closing body 10 for which obstacle detection is ON. Procees to the next step 9b, otherwise jumps to step 10.
That is, according to this step 9a, when there is no opening / closing body 10 in the obstacle detection state (when all the opening / closing bodies 10 are the obstacle detection OFF), the priority order or the like described later is not determined. The process is jumped to step 10, and the closing operation of the opening / closing body A, which is in the halfway stopped state and the obstacle detection means 13 is in the non-sensing state, is restarted.

In the next step 9b, it is determined whether or not there is an opening / closing body 10 other than the opening / closing body A which is in the halfway stopped state and the obstacle detection is OFF. If this condition is satisfied, the next step 9c is performed. If not, the process is jumped to step 10 and the closing operation of the opening / closing body A is restarted regardless of the priority order.

In step 9c, it is determined whether or not the priority order of the opening / closing body A is earlier than that of the other opening / closing bodies 10 among the plurality of opening / closing bodies 10 in the halfway stopped state and the obstacle detection is OFF. Resumes the closing operation of the opening / closing body A in the next step 10, otherwise jumps to step 11.
Here, the priority order is an order determined based on the data stored in the storage device of the control unit 4, and is stored in the image of the table illustrated in FIG. For example, when the obstacle detection ON opening / closing body determined in step 9a is A, the priority order 1 is the opening / closing body C farthest from the opening / closing body A, and the priority order 2 is the opening / closing body B.

In steps 14a to 14c and steps 19a to 19c, the opening / closing body B and the opening / closing body C are subjected to substantially the same processing as in steps 9a to 9c, respectively.

Next, with respect to the switchgear system that executes the flowcharts of FIGS. 3, 4 and 7 described above, how the switchgear 10 operates when there is an actual disaster prevention signal will be described in detail by a specific example shown in FIG. Explain to.

First, in the initial state in which the switchgear A, B, and C of all the switchgear 1, 2, and 3 are maintained in the fully open state, if a disaster prevention signal is input, the process of steps 1 and 2 (see FIG. 3) is performed. , All the switching bodies A, B, and C start the closing operation (see FIG. 9A).

During the closing operation, for example, as shown in FIG. 9B, when the opening / closing body A is close to the obstacle x1 on the closing direction side, it is determined that any of the opening / closing bodies 10 has detected the obstacle. (Step 3) Further, it is determined that the opening / closing body A in which the obstacle detection is turned on includes the opening / closing body in the closing operation (step 4), and all the opening / closing bodies A, B, and C in the closing operation are stopped. (Step 5).

In this state, the condition of the next step 6 (see FIG. 7) is not satisfied, so the process proceeds to step 11. As shown in FIG. 9B, when there is no obstacle on the closing direction side of the opening / closing bodies B and C, first, in step 11 (see FIG. 7), the opening / closing body B is in the halfway stopped state. It is determined that the obstacle detection is OFF, the timer Tb is activated (steps 12 to 13), and further, in step 16, it is determined that the opening / closing body C is in the halfway stopped state and the obstacle detection is OFF. The timer Tc is activated (steps 17-18).

Then, while the processes of steps 3 to 29 (see FIGS. 3, 4 and 7) are repeated, when the timer Tb count is completed, step 14a, 14b, 14c is executed, so that step 15 is skipped. The process proceeds to the next step 16.
That is, from the table shown in FIG. 8, when the opening / closing body of the obstacle detection ON is A, the opening / closing body B has a priority order after the opening / closing body C, so that the closing operation is immediately performed after the timer Tb count is completed. It will not resume (see FIG. 9 (c)).

When the timer Tc count is completed, steps 19a, 19b, 19c, and 20 are executed after steps 16, 17, and 19, and the opening / closing body C resumes the closing operation.
That is, from the table shown in FIG. 8, when the opening / closing body of the obstacle detection ON is A, the opening / closing body C has a priority order before the opening / closing body B, so that the closing operation is immediately performed after the timer Tc count is completed. Resume (see FIG. 9 (c)).

Then, after the opening / closing body C starts the closing operation, it is determined in step 14b (see FIG. 7) that the opening / closing body 10 in the halfway stopped state and the obstacle detection is OFF does not exist other than the opening / closing body B. When 15 is executed, the opening / closing body B resumes the closing operation next to the opening / closing body C (see FIG. 9D).

Further, as shown in FIG. 9 (e), for example, when the obstacle x is removed from below the opening / closing body A, the processing of steps 3, 4a, 6, 7, 8, 9, 9a, 10 ( By executing (see FIGS. 3 and 7), the opening / closing body A also resumes the closing operation after the elapse of a predetermined time.

Then, the opening / closing bodies A, B, and C are sequentially stopped each time they are fully closed by executing the processes of steps 21 to 26.

Therefore, according to the switchgear system that executes the flowcharts shown in FIGS. 3, 4 and 7, the switchgear 10 that does not detect an obstacle after all the switchgear 10s have stopped due to obstacle detection. After ensuring safety with the passage of a predetermined time, the closing operation can be restarted in the order of distance from the opening / closing body 10 that has detected an obstacle.
Therefore, the possibility that the opening / closing body 10 that has resumed the closing operation will stop due to obstacle detection can be reduced, and the safety can be further improved.

According to the above embodiment, the automatic closing means is provided with the switch 32 and the automatic closing device 33, but the automatic closing means uses the plurality of open / close bodies 10 when a predetermined event occurs. Any configuration may be used as long as it is configured to be closed. As another example, the automatic closing device 33 is omitted from the above embodiment, and the output shaft of the switch 32 is released from the restrained state by energizing the brake device 32b in the switch 32. It is also possible to have a configuration in which the opening / closing body 10 is closed, a configuration in which another braking device is used, or the like.

Further, in the above embodiment, the opening / closing body 10 is stopped when an obstacle is detected, but as another example, the opening / closing body 10 is reversed and stopped when an obstacle is detected (details are given). It is also possible to configure it to stop after the quantitative inversion operation).
In this case, for example, two photoelectric sensors constituting the obstacle sensing means are provided at intervals above and below so that the obstacle below the opening / closing body 10 is detected in the reverse rotation stop state, and either the upper or lower photoelectric sensor is provided. When the sensor is turned on, the opening / closing body 10 is inverted, the inverted operation is stopped when the upper photoelectric sensor is OFF and the lower photoelectric sensor is ON, and the closing operation is restarted when both the upper and lower photoelectric sensors are OFF. It may be configured to be used.

Further, according to the above embodiment, the obstacle detecting means 13 is provided on the lower end side of the opening / closing body 10, but as another example of the obstacle detecting means, the opening / closing body width direction is provided from the left and right guide rails 20 and 20. A mode of transmitting the object sensing medium q to the surface, a mode of transmitting the object sensing medium q downward from the storage case of the winding device 30, a mode of transmitting the object sensing medium q upward from the floor surface, the above-mentioned opening / closing. It is also possible to transmit the object sensing medium q between poles provided in a separate body close to the device.

Further, according to the above embodiment, the photoelectric sensor is mentioned as an example of the obstacle detecting means 13, but as another example of the obstacle detecting means 13, ultrasonic waves, radio waves, or the like are emitted as the object sensing medium q. It is also possible to use the above-mentioned mode.

Further, according to the above embodiment, the obstacle detecting means 13 is configured by the non-contact type sensor, but as another example, the obstacle detecting means 13 can be configured by the contact type sensor. In this case, for example, the seat plate 12 at the lower end of the opening / closing body 10 is a movable seat plate that can move up and down with respect to the opening / closing body main body 11, and the limit switch indicates that the movable seat plate is raised by contact with an obstacle. It may be configured to be sensed by a proximity switch or the like.
Further, as another example, it is also possible to configure the obstacle detecting means 13 by using both the non-contact type sensor and the contact type sensor.

Further, in the above embodiment, a switchgear system composed of a plurality of switchgear is configured, but as another example of this switchgear system, a plurality of switchgear can be independently closed in a single switchgear. It is also possible to have a complete configuration.

Further, in the above embodiment, when an obstacle is detected, the opening / closing body 10 farther from the opening / closing body 10 in the obstacle detection state follows the priority order (see FIG. 8) stored in the storage device of the control unit 4. However, as another example, a distance sensor for measuring the distance from the other opening / closing body 10 is provided for each opening / closing body 10, and the obstacle is detected based on the measurement data by the distance sensor. It is also possible to configure the opening / closing body 10 farther from the opening / closing body 10 to restart the closing operation earlier.

Further, in the above embodiment, the priority order for restarting the closing operation is the order far from the opening / closing body 10 in the obstacle detection state, but the order may be determined by other conditions, for example. It is also possible to configure the plurality of opening / closing bodies 10 to restart the closing operation in ascending order of the assumed amount of passing objects.

Further, in the above embodiment, a predetermined event for closing the plurality of opening / closing bodies 10 is an input of a disaster prevention signal to the control unit 4, but as another example of the above-mentioned event, a smoke detection sensor or heat is used. It is also possible to input the sensing signal by the sensing sensor.

4: Control unit 1, 2, 3: Switchgear 10 (A, B, C): Switchgear 13: Obstacle sensing means 13a: Discharge unit 13b: Capture unit 30: Winding device 32: Switchgear 32a: Motor 32b : Brake device 32c: Operation lever 33: Automatic closing device p: Seating target part q: Object sensing medium x, x1, x2: Obstacle

Claims (5)

A plurality of switchgear held in an open state, an automatic closing means for closing the plurality of switchgear when a predetermined event occurs, and an obstacle on the closing direction side of the switchgear for each switchgear. In a switchgear system equipped with obstacle sensing means to detect
After the operation of the automatic closing means, a first determination is made as to whether or not the obstacle sensing means is in the sensing state by any of the switchgear, and the first determination determines that the obstacle sensing means is in the sensing state . In that case, whether or not all the switchgear during the closing operation is stopped or inverted and then stopped, and then the closing operation is stopped halfway for each switchgear and the obstacle detecting means is in the non-sensing state. The opening / closing device system is characterized in that when the second determination is made and the second determination determines that the switchgear is in the non-sensing state, the corresponding opening / closing body is closed. The switchgear system according to claim 1, wherein when it is determined in the second determination that the switchgear is in the non-sensing state, the corresponding switchgear is closed after a lapse of a predetermined time. If it is not determined in the first judgment that it is in the sensing state, a third determination is made as to whether or not all the opening / closing bodies are in the closing operation, and in the third judgment , all the opening / closing bodies are in the closing operation. Judged to be
In that case, the switchgear is stopped when each switchgear in the closing operation is fully closed, and if it is determined in the third determination that all the switchgear is not in the closing operation, the second determination is made. The switchgear system according to claim 1 or 2, wherein when it is determined in the second determination that the switchgear is in the non-sensing state, the corresponding switchgear is closed . Any one of claims 1 to 3, wherein when it is determined in the second determination that the switchgear is in the non-sensing state, the corresponding switchgear is closed in accordance with a predetermined priority order. The switchgear system described in the section. The switchgear system according to claim 4, wherein the priority order is set so that the switchgear that is farther from the switchgear in the detection state by the obstacle detecting means is set to close first.

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