Watertight opening / closing device and method for controlling the watertight opening / closing device

Abstract

To provide a water stop opening and closing body device that performs control so that slacking of a chain does not occur during water stopping operation without slacking the chain by a predetermined amount when the water stopping operation starts.SOLUTION: A water stop opening and closing body device is configured such that after an opening part is completely closed by a plurality of water stop panels 34-37, the movement of the chain is stopped, braking is applied to driving means by braking means when the movement of the chain is stopped, braking of the braking means applied to the driving means is released immediately before the execution of processing (water stopping processing) for applying pressure force, and the water stopping processing is executed after the release. The above eliminates the necessity for the slacking of the chain by a predetermined amount which has been carried out conventionally, and control is performed so that the slacking of the chain does not occur during the water stopping operation.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to a watertight opening / closing device and a control method for a watertight opening / closing device that closes openings such as entrances and exits of buildings such as buildings, factories, warehouses, garages, etc., or openings such as entrances and exits of subway stations and underground shopping malls in a watertight state during heavy rain, etc. In particular, the present invention relates to a watertight opening / closing device and a control method for a watertight opening / closing device that are suitable for controlling a watertight opening / closing device configured using a plurality of watertight panels. [Background technology]

[0002] BACKGROUND ART Watertight opening / closing devices are installed at ground level entrances to underground facilities such as subway stations and underground shopping malls, as well as at building entrances, in order to prevent water caused by heavy rain from flowing into the underground facilities or the interior of the building. As such a watertight opening and closing device, a waterproof door described in Patent Document 1 has been proposed. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 6355356 Summary of the Invention [Problem to be solved by the invention]

[0004] The waterproof door described in Patent Document 1 is equipped with a first compression means that compresses the door body vertically and a second compression means that compresses it horizontally, and the second compression means performs its compression operation after the first compression means performs its compression operation.

[0005] In a watertight panel shutter such as that described in Patent Document 1, the chain suspending the multiple watertight panels is set to slacken by a predetermined amount when stopped at the lowest position, and when the first compression means performs a watertight operation (when compressing vertically), the watertight rubber between the watertight panels is crushed, causing the watertight panels to move vertically, so that the predetermined slack in the chain can absorb the vertical movement. On the other hand, when a watertight panel shutter is used as a normal panel shutter for opening and closing an opening other than for watertight purposes, if the chain is loose, it could cause it to get caught. Therefore, a chain slack detector is installed to control the stopping position of the watertight panel shutter so that the chain is always taut to ensure safety when the shutter is closed. The chain slack detector was then disabled near the lower limit during water shutoff operation, allowing the chain to slacken by a predetermined amount. Disabling the chain slack detector near the lower limit in this way meant that there was an area where chain slack detection was disabled, making it difficult to ensure safety.

[0006] The present invention has been made in consideration of the above-mentioned points, and aims to provide a watertight opening / closing device and a control method for a watertight opening / closing device that can control the chain so that it does not slacken by a predetermined amount when the watertight operation begins, and so that the chain does not slacken during the watertight operation. [Means for solving the problem]

[0007] A first feature of the watertight opening / closing device of the present invention is a watertight opening / closing means that opens and closes an opening by moving a plurality of panel means connected by a chain from the periphery of the opening along a guide means, a drive means that moves the chain along the guide means by rotating a chain wheel, a braking means that brakes the drive means when the movement of the chain stops, a horizontal compression means that applies a compressive force to the plurality of panel means in the horizontal direction of movement to improve watertightness between the plurality of panel means and the guide means, and a vertical compression means that applies a compressive force to the plurality of panel means in the vertical direction of movement to improve watertightness between the plurality of panel means that are in contact with each other in the vertical direction, in this watertight opening / closing device, when the movement of the chain stops after the opening is fully closed by the plurality of panel means, the braking means applies a brake to the drive means, which was applied to the drive means before the horizontal and vertical compression means applied the compressive force, is released, and after the braking is released, a process is executed in which the horizontal and vertical compression means apply the compressive force.

[0008] A watertight opening / closing device is composed of multiple panel means that electrically move to open and close openings such as entrances and windows, or internal passageways and spaces in structures such as buildings, factories, warehouses, and garages. The multiple panel means are connected by chains and stored in the upper part of the periphery of the opening in the building, etc. The panel means passes through a lintel or the like and moves (lowers) through the opening along a guide means, electrically opening and closing the opening by moving the chain along the guide means. In addition, the watertight opening / closing device may be stored at the bottom of the opening and electrically move to open and close by a rising mechanism, or the watertight opening / closing device may be stored on the side and electrically move by a sliding mechanism. Watertight opening / closing devices may include those that can fully close the opening when closed and those that cannot.

[0009] The horizontal compression means applies a compression force to the plurality of panel means in the horizontal movement direction after the opening is closed by the watertight opening / closing means or after the watertight start button is operated after this closure. The process by which the horizontal compression means applies a compression force in the horizontal movement direction is called the horizontal compression process. This horizontal compression process causes the plurality of panel means to be compressed against the inner wall surface of the guide means and come into contact with each other, thereby improving watertightness. Meanwhile, the vertical compression means applies a compression force to the plurality of panel means in the vertical movement direction after the opening is closed by the watertight opening / closing means. The process by which the vertical compression means applies a compression force in the vertical movement direction is called the vertical compression process. This vertical compression process improves watertightness between the plurality of panel means that are compressed vertically and come into contact with each other.

[0010] In this invention, the movement of the chain is stopped after the opening is fully closed by the multiple panel means, the braking means applies a brake to the drive means when the chain stops moving, and the braking means that had been applied to the drive means is released just before the process of applying pressure (water stopping process) is performed, and the water stopping process is performed after the braking is released. This eliminates the need to slacken the chain by a predetermined amount as was done in the past, and makes it possible to control the chain so that slack does not occur during the water stopping operation.

[0011] A second feature of the waterproof opening / closing device of the present invention is that in the waterproof opening / closing device described in the first feature, a first horizontal compression process is executed by the horizontal compression means, and after the first horizontal compression process is completed, a first vertical compression process is executed by the vertical compression means, and after the first vertical compression process is completed, a second horizontal compression process is executed by the horizontal compression means, and after the second horizontal compression process is completed, a second vertical compression process is executed by the vertical compression means. In this invention, compression processes are performed in the following order by the horizontal compression means: first horizontal compression process, first vertical compression process, second horizontal compression process, and second vertical compression process. By performing the first horizontal compression process on the multiple panel means, the multiple panel means are compressed against and come into contact with the inner wall surface of the guide means, eliminating any gaps that existed between the multiple panel means and the guide means, eliminating any individual tilt of the multiple panel means, and maintaining a straight line along the inner wall surface of the guide means. By performing the first vertical compression process after this first horizontal compression process, a compression force in the vertical movement direction is applied from the vertical compression means to the multiple panel means that are maintaining a straight line, thereby efficiently compressing and bringing them into contact in the vertical direction and improving the watertightness between the multiple panel means. In this invention, because the first vertical compression process causes the multiple panel means to move in the vertical movement direction, the second horizontal compression process is performed after the first vertical compression process. The plurality of panel means moved horizontally and vertically by the second horizontal compression process and the third vertical compression process are efficiently compressed and come into contact with the inner wall surface of the guide means, thereby significantly improving watertightness.

[0012] The third feature of the watertight opening / closing device of the present invention is that in the watertight opening / closing device described in the first feature, after the process of applying the pressure force by the horizontal compression means and the vertical compression means to increase the watertightness between the multiple panel means and the guide means and between the multiple panel means is completed, a series of open-stop-close operations are performed on the multiple panel means to remove slack in the chain that occurs after the process of applying the pressure force is released and the multiple panel means are returned to the state when the opening is fully closed. After the waterproofing process is completed, the process of applying pressure by the horizontal and vertical compression means is released, and the multiple panel means are returned to the state when the opening was fully closed. This causes the watertight rubber between the panel means to return to its original state, and the waterstop panels move vertically, causing slack in the chain. Therefore, in this invention, the chain slack is removed by performing a series of open-stop-close operations on the multiple panel means.

[0013] A first feature of the control method for a watertight opening / closing device of the present invention is that in the control method for a watertight opening / closing device comprising a watertight opening / closing means that opens and closes an opening by moving a plurality of panel means connected by a chain from the periphery of the opening along a guide means, a drive means that moves the chain along the guide means by rotating a chain wheel, a braking means that brakes the drive means when the movement of the chain stops, a horizontal compression means that applies a compressive force to the plurality of panel means in the horizontal direction of movement to improve watertightness between the plurality of panel means and the guide means, and a vertical compression means that applies a compressive force to the plurality of panel means in the vertical direction of movement to improve watertightness between the plurality of panel means that are in contact with each other in the vertical direction, the control method is such that when the movement of the chain stops after the opening is fully closed by the plurality of panel means, the braking means applies a brake to the drive means, which was applied to the drive means before the horizontal and vertical compression means applied the compressive force, is released, and after the braking is released, a process is executed in which the horizontal and vertical compression means apply the compressive force. This is an invention of a control method for a watertight opening / closing device corresponding to the first feature of the watertight opening / closing device.

[0014] A second feature of the control method for a waterproof opening / closing device of the present invention is that, in the control method for a waterproof opening / closing device described in the first feature, a first horizontal compression process is executed by the horizontal compression means, and after the first horizontal compression process is completed, a first vertical compression process is executed by the vertical compression means, and after the first vertical compression process is completed, a second horizontal compression process is further executed by the horizontal compression means, and after the second horizontal compression process is completed, a second vertical compression process is executed by the vertical compression means. This is an invention of a control method for a watertight opening / closing device corresponding to the second feature of the watertight opening / closing device.

[0015] A second feature of the control method for a watertight opening / closing device of the present invention is that, in the control method for a watertight opening / closing device described in the first feature, after the process of applying the pressure force by the horizontal compression means and the vertical compression means to increase the watertightness between the multiple panel means and the guide means and between the multiple panel means is completed, a series of open-stop-close operations are performed on the multiple panel means in order to remove slack in the chain that occurs after the process of applying the pressure force is released and the multiple panel means are returned to the state when the opening is fully closed. This is an invention of a control method for a watertight opening / closing device corresponding to the third feature of the watertight opening / closing device. [Effects of the Invention]

[0016] The watertight opening / closing device and the control method for the watertight opening / closing device of the present invention have the advantage that the chain can be controlled so that slack does not occur during the watertight operation, without slackening the chain by a predetermined amount when the watertight operation begins. [Brief explanation of the drawings]

[0017] [Figure 1] 1 is a diagram showing a schematic configuration of a watertight opening / closing device according to an embodiment of the present invention; [Figure 2] 2 is a block diagram showing an outline of a control device for the watertight opening / closing device of FIG. 1. FIG. [Figure 3]10 is an operational diagram showing an example of the operation of the water shutoff opening / closing device from when the water shutoff start button is operated until the water shutoff process is completed. [Figure 4] 10 is an operational diagram showing an example of the operation of the water shutoff opening / closing device from when the water shutoff release button is operated until the water shutoff state is released. DETAILED DESCRIPTION OF THE INVENTION

[0018] A preferred embodiment of a watertight opening / closing device according to the present invention will be described below with reference to the accompanying drawings. In this embodiment, a conventionally known watertight opening / closing device that opens and closes an opening by sequentially moving a plurality of watertight panels (panel means) from the periphery of the opening along a guide rail (guide means) will be described as an example. Fig. 1 is a diagram showing the schematic configuration of a watertight opening / closing device according to one embodiment of the present invention. In Fig. 1, the watertight opening / closing device 10 opens and closes an opening by moving multiple watertight panels up and down the opening, and the watertightness is dramatically improved by the watertight rubber provided on each watertight panel.

[0019] The watertight opening / closing device 10 is installed in openings in structures such as buildings, or in openings such as entrances and exits to subway stations and underground shopping malls. The watertight opening / closing device 10 comprises a control device 20, a panel storage section 30, watertight panels 34-37, guide rails 31, 32, horizontal compression devices 41, 42, and vertical compression devices 51-54. The basic structure and operation of this watertight opening / closing device 10 are described in Patent Document 1 and other documents and are publicly known, so a description thereof will be omitted.

[0020] The horizontal compression devices 41, 42 and the vertical compression devices 51-54 are composed of telescopic actuators powered by a motor. The telescopic actuators convert the rotational drive force of the motor into the telescopic force of the telescopic rods. The watertight opening / closing device 10 incorporates a horizontal compression mechanism that uses the telescopic force of the telescopic actuators that make up the horizontal compression devices 41, 42 to compress the watertight panels 34-37 against the inner wall surfaces of the guide rails 31, 32. This horizontal compression mechanism is configured to move the watertight panels 34-37 in the direction (horizontal direction) toward the inner wall surfaces of the guide rails 31, 32 when the rods of the telescopic actuators that make up the horizontal compression devices 41, 42 move vertically (downward). This horizontal compression mechanism is also well known, so a detailed description will be omitted. A watertight rubber material (watertight rubber) is provided on the inner wall surfaces of the watertight panels or guide rails, and the watertight panels and guide rails come into contact with each other via this watertight material.

[0021] The vertical compression devices 51-54 incorporate a vertical compression mechanism that uses the expansion and contraction force of the telescopic actuator to compress the upper end of the waterstop panel 34 vertically (downward). This horizontal compression mechanism is configured to move the waterstop panel 34 vertically (downward) when the rod of the telescopic actuator that makes up the vertical compression devices 51-54 moves. This vertical compression mechanism is also well known, so a detailed description will be omitted. Watertight material (watertight rubber) is also provided between the waterstop panels and between the waterstop panels and the floor.

[0022] The watertight opening / closing body device 10 according to this embodiment is comprised of four vertical compression devices 51-54. The vertical compression devices 51 and 52 are configured to contact the upper left end of the watertight panel 34 and transmit the compression force of the vertical compression devices 51 and 52 to the watertight panel 34 via a contact member 61, thereby compressing the watertight panel 34 vertically (downward). The vertical compression devices 53 and 54 are configured to contact the upper right end of the watertight panel 34 and transmit the compression force of the vertical compression devices 53 and 54 to the watertight panel 34 via a contact member 63, thereby compressing the watertight panel 34 vertically (downward). In this embodiment, the number of vertical compression devices is merely an example; three vertical compression devices may be provided at the center of the right and left sides, or one or two vertical compression devices may be provided if the watertight panel 34 is short in the horizontal direction. Conversely, four or more vertical compression devices may be provided if the watertight panel 34 is long in the horizontal direction.

[0023] In this embodiment, two vertical compression devices 51, 52 compress one contact member 61, and two vertical compression devices 53, 54 compress one contact member 63, but three or more vertical compression devices may be configured to compress one contact member, or one or more vertical compression devices may be combined to compress one contact member each. For example, the left and right contact members may be compressed by two vertical compression devices, and the central contact member may be compressed by one or three vertical compression devices.

[0024] Figure 2 is a block diagram showing an outline of the control device for the watertight opening / closing device of Figure 1. The control device 20 for the watertight opening / closing device includes a shutter control panel 21, an opening / closing mechanism 22, an automatic closing device 23, a watertight control device 25, an operation switch 27, and the like. The shutter control panel 21 and the opening / closing device 22 rotate a chain wheel (not shown) to wind and unwind the chain, controlling the opening and closing of the water stop panels (water stop opening / closing means) 34 to 37. The opening / closing device 22 is fitted with a brake (braking means) (not shown), which mechanically holds the water stop panels 34 to 37 in an open state under normal circumstances. When an emergency signal BS indicating a fire or the like is input from outside, a close instruction signal is sent to the shutter control panel 21, which releases the brake of the opening / closing device 22 in response to the close instruction signal, releasing the open state of the water stop panels 34 to 37, and rotating the chain wheel to move the water stop panels 34 to 37 in the closing direction, controlling the closing of an opening in a structure such as a building.

[0025] In addition to, or instead of, inputting the emergency signal BS from outside, a temperature sensor or the like may be provided inside the panel storage section 30 near the opening of the lintel, i.e., in the area where the water stop panels 34 to 37 move up and down. This temperature sensor may be configured to be a high-temperature bimetal thermostat with an automatic reset type B contact that keeps the contact on at all times and opens and turns off when the contact reaches a predetermined temperature (any temperature between 100 and 300 degrees Celsius), and when the contact opens, it may be configured to output a signal indicating the occurrence of a fire or the like as a signal equivalent to the emergency signal BS.

[0026] The opening / closing device 22 is provided with a limit switch (not shown) that detects its rotation position and prevents the chain from being over-wound or over-rewound (chain slack). A detection signal from the limit switch is output to the shutter control panel 21.

[0027] The shutter control panel 21 is configured as a microcomputer, and is supplied with AC power of, for example, 200V from the AC power line of a commercial power source. The operation switch 27 has operation buttons such as an open button, a stop button, a close button, a water stop ON button, and a water stop OFF button as control switches corresponding to the opening / closing / stopping operations of the water stop panels 34 to 37, and outputs control signals according to the operation state of each operation button to the water stop control device 25. Although not shown, there is a display means such as an LED near the water stop ON button that displays the number of times the water stop process has been performed.

[0028] The shutter control panel 21 controls the rotation of the opening / closing mechanism 22 based on control signals corresponding to the operation state of each operation button of the operation switch 27 and detection signals from limit switches provided on the opening / closing mechanism 22, and releases the brake of the opening / closing mechanism 22 based on an emergency signal BS. The water stop control device 25 also controls the operations of the horizontal compression devices 41, 42 and the vertical compression devices 51 to 54 in response to control signals corresponding to the operating states of the water stop ON button and the water stop OFF button for operating the operation switch 27.

[0029] The water stop control device 25 includes a programmable logic controller (PLC) 251, a switching power supply 252, and additional relays 253 and 254, and is controlled by the PLC 251. When the detection signal (a-contact) from the limit switch provided in the opening / closing device 22 changes to the ON state (b-contact), the switching power supply 252 stops supplying the activation signal (24V), brakes the opening / closing device 22, and stops the movement of the chain and water stop panels 34 to 37. At the same time, the water stop control device 25 turns the water stop signal ON and starts water stop control. After a predetermined time (e.g., one second) has elapsed since the water stop signal changed to the ON state, the water stop control device 25 outputs the activation signal (24V) from the switching power supply 252 to the activation input terminal of the automatic closing device 23. The automatic closing device 23 releases the brake of the opening / closing device 22 in response to the input of this activation signal (24V).

[0030] The additional relay 253 outputs a no-voltage recovery signal to the automatic closing device 23 when a predetermined condition is met after input of a control signal from the water stop OFF button, making it possible to perform the open, stop, and close operations corresponding to the operation of the open, stop, and close buttons. The additional relay 254 interlocks the control signal output from the PLC 251 to the shutter control panel 21 when the detection signal (contact a) from the limit switch provided in the opening / closing device 22 becomes on (contact b), thereby stopping the operation of the shutter control panel 21 and the opening / closing device 22.

[0031] Furthermore, while an actuation signal (24V) is being output from the switching power supply 252 to the actuation input terminal of the automatic closing device 23, the additional relay 254 interlocks the control signal output from the PLC 251 to the shutter control panel 21, thereby stopping the operation of the shutter control panel 21 and the opening / closing machine 22. As a result, while the water stop control device 25 is controlling the operation of the horizontal compression devices 41, 42 and the vertical compression devices 51 to 54, the operation of the shutter control panel 21 and the opening / closing machine 22 is interlocked.

[0032] Fig. 3 is an operational diagram showing an example of the operation of a watertight opening / closing device from when the watertight start (watertight ON) button is operated until the watertight process is completed. In Fig. 3, waveforms h1 and h2 schematically show the horizontal movement amount of the telescopic actuators of horizontal compression devices 41 and 42 that operate to improve the watertightness of the watertight panels 34-37 after the opening is closed by the multiple watertight panels 34-37 of the watertight opening / closing device 10 (i.e., the horizontal movement distance of the watertight panels 34-37), and waveforms v1 to v4 schematically show the vertical movement amount of the telescopic actuators of vertical compression devices 51-54 (i.e., the vertical movement distance of the watertight panels 34-37). The movement amounts of the horizontal compression devices 41 and 42 and the vertical compression devices 51-54 actually vary slightly from device to device, but for convenience of explanation, the horizontal compression devices 41 and 42 and the vertical compression devices 51-54 will be described here as showing the same movement amount.

[0033] When the water stop start (water stop ON) button is operated, the shutter control panel 21 and the opening / closing machine 22 move the multiple water stop panels 34-37 of the water stop opening / closing body device 10 in the closing direction to close the opening. When the process of closing the opening by the water stop panels 34-37 ends at time t0 and the opening is fully closed, the automatic closing device 23 sends a stop signal indicating that it has shifted from contact a to contact b at time t0 to the additional relay 254. Upon receiving this stop signal, the additional relay 254 places the shutter control panel 21 and the opening / closing machine 22 in an interlock state. At the same time that the stop signal is output at time t0, the water stop signal turns ON, and the water stop opening / closing body device 10 starts the water stop process at time t0.

[0034] Conventionally, the horizontal compression devices 41, 42 would be operated to execute horizontal compression processing as soon as this water stop signal turned ON, but in this embodiment, a 24V activation signal is output to the automatic closing device 23 at time t1, approximately one second after time t0 when the water stop signal turned ON. When the switching power supply 252 outputs a 24V activation signal to the automatic closing device 23, the additional relay 254 places the shutter control panel 21 and the opening / closing device 22 in an interlock state. In other words, when the additional relay 254 receives a stop signal from the water stop panels 34 to 37 and then outputs a 24V activation signal to the automatic closing device 23, the shutter control panel 21 and the opening / closing device 22 in an interlock state.

[0035] At time t2, approximately one second after time t1 when a 24V activation signal is output from switching power supply 252 to automatic closing device 23 (approximately two seconds after water shutoff is turned ON), the motors of horizontal compression devices 41, 42 begin to drive, and waterstop panels 34-37 begin to move horizontally by horizontal compression devices 41, 42. The horizontal movement distance of waterstop panels 34-37 increases linearly as shown by waveforms h1 and h2.

[0036] A predetermined time after the horizontal compression process start time t2, the current feedback signal value of the motors of the horizontal compression devices 41, 42 becomes approximately 0.5 A, and as time t3 approaches, the current feedback signal value gradually increases until it becomes approximately 1.0 A at time t3, and the waterstop panels 34-37 have moved a distance AH1. The waterstop panels 34-37 stopped at the travel distance AH1 because the waterstop panels 34-37, which had been moved horizontally by the horizontal compression devices 41, 42, came into contact with the inner wall surfaces of the guide rails 31, 32, and their horizontal movement was stopped by pressure contact with the compressible watertight rubber between the panels and the guide rails.

[0037] At time t3, when the current feedback signal for the motors of the horizontal compression devices 41, 42 reaches approximately 1.0 A, i.e., when the distance traveled by the waterstop panels 34-37 reaches AH1, power supply to the motors of the horizontal compression devices 41, 42 is stopped. This temporarily stops horizontal compression control of the waterstop panels 34-37 by the horizontal compression devices 41, 42, and the position of the rod of the telescopic actuator is maintained, maintaining a state in which a horizontal compressive force corresponding to a torque of approximately 1.0 A is applied to the waterstop panels 34-37. In other words, the state in which a horizontal compressive force corresponding to a torque of 1.0 A is applied continues from time t3 to time t7.

[0038] Meanwhile, when the water stop signal is turned ON (the water stop signal is ON at time t0), the LED on the operation switch 27 starts flashing, indicating that the water stop panel is operating the water stop process. The flashing state is achieved, for example, by repeatedly turning the LED on for 1 second and off for 1 second. When the water stop process by the water stop panel is completed, the LED on the operation switch 27 starts flashing continuously, indicating that the water stop process has been completed.

[0039] Approximately five seconds after time t3, when the power supply to the motors of horizontal compression devices 41, 42 is stopped, the motors of vertical compression devices 51-54 are driven to begin vertical movement (compression processing) of waterstop panels 34-37. The vertical movement distance of waterstop panels 34-37 increases linearly, as shown by waveforms v1-v4. This indicates that the motors have started to drive and vertical compression devices 51-54 have moved waterstop panels 34-37 vertically.

[0040] A predetermined time after the vertical compression process start time t4, the current feedback signal value of the motors of vertical compression devices 51-54 becomes approximately 0.5 [A], and as time t5 approaches, the current feedback signal value gradually increases until it becomes approximately 1.0 [A] at time t5, and the movement distance of waterstop panels 34-37 becomes AV1. The waterstop panels 34-37 stopped at movement distance AV1 because the vertical movement of the waterstop panels 34-37, which had been caused by vertical compression devices 51-54, was stopped by the compressible watertight rubber between the panels pressing against them.

[0041] At time t5, when the current feedback signal value of the motors of the vertical compression devices 51-54 reaches approximately 1.0 A, i.e., when the travel distance of the waterstop panels 34-37 reaches AV1, power supply to the motors of the vertical compression devices 51-54 is stopped. This temporarily stops vertical compression control of the waterstop panels 34-37 by the vertical compression devices 51-54, and the position of the rod of the telescopic actuator is maintained, maintaining the state in which a vertical compression force corresponding to a torque of approximately 1.0 A is applied to the waterstop panels 34-37. In other words, the state in which a vertical compression force corresponding to a torque of 1.0 A is applied continues from time t5 to time t9.

[0042] At time t6, a predetermined time (approximately 8 seconds) after time t5, when the power supply to the motors of the vertical compression devices 51-54 is stopped, power is supplied again to the motors of the horizontal compression devices 41, 42. At this time t6, the horizontal movement of the horizontal compression devices 41, 42 is restricted by the compressible watertight rubber between the panel and the guide rail, so the current feedback signal gradually increases linearly from time t6. As the current feedback signal increases, the horizontal compression force (torque) of the horizontal compression devices 41, 42 also gradually increases.

[0043] From time t7, when the current feedback signal reaches approximately 1.0 A, the current feedback signal also increases, and waveforms h1 and h2 (the distance traveled by the waterstop panels 34-37) gradually increase. At time t8, when the travel distance reaches AH2—that is, when the current feedback signal reaches approximately 4.0 A—power supply to the motors of the horizontal compression devices 41 and 42 is stopped. This stops the horizontal compression control of the waterstop panels 34-37 by the horizontal compression devices 41 and 42, and the position of the telescopic actuator rod is maintained, maintaining the horizontal compression force applied to the waterstop panels 34-37 in accordance with a torque of approximately 4.0 A. In other words, from time t8 onward, the horizontal compression force applied in accordance with a torque of AL2 (current value 4.0 A) continues.

[0044] At time t8, when the power supply to the motors of the horizontal compression devices 41 and 42 is stopped, power supply to the vertical compression devices 51-54 begins. At this time t8, the vertical movement of the vertical compression devices 51-54 is restrained by the compressible watertight rubber between the panels, so only the current value of the current feedback signal increases linearly. As the current value increases, the vertical compression force (torque) of the vertical compression devices 51-54 gradually increases, and accordingly, the waveforms v1-v4 (the movement distance of the waterstop panels 34-37) also gradually increase. At time t10, when the movement distance reaches AV2, that is, when the value of the current feedback signal reaches approximately 4.0 A, power supply to the motors of the vertical compression devices 51-54 is stopped. As a result, the vertical compression control by the vertical compression devices 51-54 on the water-stopping panels 34-37 stops, and the position of the rod of the telescopic actuator is maintained, so that the water-stopping panels 34-37 remain in a state where a vertical compression force corresponding to a torque of approximately 4.0 A is applied.

[0045] At time t10 when the power supply to the motors of the vertical compression devices 51-54 is stopped, the water stop signal lights continuously, indicating that the water stop operation has ended and the opening has been completely watertight by the multiple water stop panels 34-37. A count pulse is output to the water stop counter to count the number of times the water has been completely watertight. The accumulated value of the water stop counter is displayed near the water stop OFF button.

[0046] The series of processes shown in Figure 3 improves the watertightness of the multiple waterstop panels 34-37 of the watertight opening / closing device 10. The time from t0 to t1 (1 second), the time from t1 to t2 (1 second), the time from t3 to t4 (5 seconds), the time from t5 to t6 (8 seconds), and the time from t8 to t9 (5 seconds) are examples and can be adjusted within a range of 0 to several tens of seconds depending on the size of the opening, the number and size of the waterstop panels, and the softness (elasticity) of the watertight material. The current values ​​of 0.5 A, 1.0 A, and 4.0 A of the current feedback signal when power supply to the horizontal compression devices 41 and 42 and the vertical compression devices 51-54 is stopped are also examples and can be adjusted within a range of 0 to several tens of A depending on the size of the opening, the number and size of the waterstop panels, and the softness (elasticity) of the watertight material.

[0047] In the control diagram of FIG. 3, a first horizontal compression process is performed from time t2 to time t3, a first vertical compression process is performed from time t4 to time t5, a second horizontal compression process is performed from time t7 to time t8, and a second vertical compression process is performed from time t9 to time t10. However, these horizontal compression processes and vertical compression processes may be performed multiple times.

[0048] Figure 4 is an operational diagram showing an example of the operation of the water shutoff opening / closing device from when the water shutoff release (water shutoff OFF) button is operated until the water shutoff state is released. Figure 4 shows the same waveforms as those in Figure 3, and also newly shows a stop signal (interlock signal), open signal, stop output (stop signal), and close signal. The open signal, close signal, stop output (stop signal), and close signal in Figure 4 correspond to the open signal, stop signal (stop signal), and close signal that control the opening / closing and stopping operations of the water shutoff panels 34 to 37 by operating the open button, stop button, and close button of the operation switch 27.

[0049] When the water stop release (water stop OFF) button is operated at time t0, the LED on the operation switch 27 changes from a continuous light to a flashing state, indicating that the water stop release process is in progress. At the same time, the water stop opening / closing device 10 begins the water stop release process. At time t0, when the water stop signal turns OFF, the motors of the horizontal compression devices 41 and 42 rotate in the opposite direction to that used for the compression process. This causes the telescopic actuators of the horizontal compression devices 41 and 42 to move the water stop panels 34-37 in the release direction (the opposite direction to the horizontal compression direction). In other words, the telescopic actuators begin retracting at time t0 when the water stop release (water stop OFF) button is operated. The horizontal movement distance of the water stop panels 34-37 decreases linearly, as shown by waveforms h1 and h2. The horizontal compression release process ends at time t1, when the proximity sensors attached to the telescopic actuators of the horizontal compression devices 41 and 42 turn ON.

[0050] At time t2, a predetermined time (approximately 5 seconds) after the end of the horizontal compression release process at time t1, the motors of the vertical compression devices 51-54 are driven to rotate in the opposite direction to that used for the compression process. This causes the telescopic actuators of the vertical compression devices 51-54 to move the waterstop panels 34-37 in the compression release direction (the opposite direction to the vertical compression). In other words, at time t2, the telescopic actuators begin retracting. The vertical movement distance of the waterstop panels 34-37 decreases linearly, as shown by waveforms v1-v4. The vertical compression release process ends at time t3, when the proximity sensors attached to the telescopic actuators of the vertical compression devices 51-54 turn ON.

[0051] Conventionally, the watertight state was released when this vertical pressure release process was completed, and the open / close operations of the watertight panels 34-37 could be controlled by operating the open button, stop button, and close button on the operation switch 27. However, when the watertight state is released, that is, when the vertical pressure on the watertight panels 34-37 is released, the pressing force of the actuator mechanism is released and the watertight rubber repels the watertight panels 34-37, causing slack in the chain.

[0052] Therefore, in this embodiment, at time t4 after all proximity sensors have turned ON, the shutter control panel 21 outputs a recovery signal to the automatic closing device 23, releasing the brake. Then, a series of open-stop-close operations are performed on the water stop panels 34-37, removing any slack in the chain and controlling the system so that the chain remains taut and reaches a fully closed state. The water stop lamp flashes until this series of shutter operations is complete, indicating that a series of operations is in progress for the water stop OFF operation (actuator retraction).

[0053] This series of operations will be explained below. At time t4, after the vertical pressure on the water stop panels 34 to 37 is released and all proximity sensors have turned ON, a recovery signal is output from the shutter control panel 21 to the automatic closing device 23. At the same time as the recovery signal is output (time t4), the stop output turns OFF. When the stop output is ON, the open signal and close signal are not output. Therefore, when the stop output turns OFF, the output of the open signal and close signal becomes valid.

[0054] Approximately 0.1 seconds after time t4 when the recovery signal is output and the stop output goes OFF, the interlock signal turns OFF and the interlock is released. Because the interlock signal turns OFF and the interlock is released, an open signal is output at time t5, approximately 2 seconds after time t4. At time t6, approximately 2 seconds after time t5, a stop output is output instead of the open signal. At time t7, approximately 1 second after time t6, a close signal is output instead of the stop output. Approximately 2 seconds after time t7, the output of the close signal stops. By performing this series of open-stop-close operations of the waterstop panels 34-37, the slack in the chain is eliminated and the fully closed state with the chain remaining taut is restored.

[0055] In the diagram of Figure 4, the time from time t1 to time t2 (5 seconds), 0.1 seconds from time t4, the time from time t4 to time t5 (2 seconds), the time from time t5 to time t6 (2 seconds), the time from time t6 to time t7 (1 second), and the time from time t7 to time t8 (2 seconds) are examples, and can be changed appropriately within a range of 0 to several tens of seconds depending on the size of the opening, the number and size of the water-stopping panels, etc.

[0056] In the above-described embodiment, a watertight opening / closing device that is extended by a vertical lifting method has been described as an example, but the present invention can also be applied to a watertight opening / closing body such as a watertight panel that is extended by a horizontal or lateral pulling method. In addition, the compression direction of the vertical compression may be replaced with the extension direction of the opening / closing body. [Explanation of symbols]

[0057] 10...Watertight opening and closing device 20...Control device for watertight opening and closing device 21...Shutter control panel 22...Opening and closing mechanism 23...Automatic closing device 25...Water stop control device 251...PLC 252...Switching power supply 253,254...Additional relays 27...Operation switch 30...Panel storage section 31, 32...Guide rails 34~37...Waterstop panel 41, 42...Horizontal compression device 51~54...Vertical compression device 61, 63...contact members

Claims

1. a watertight opening / closing means for opening and closing the opening by moving a plurality of panel means connected by a chain from the periphery of the opening along a guide means; a drive means for rotating a chain wheel to move the chain along the guide means; braking means for applying a brake to the driving means when the movement of the chain stops; a horizontal compression means for applying a compression force to the plurality of panel means in a horizontal movement direction to enhance watertightness between the plurality of panel means and the guide means; a vertical compression means for applying a compression force to the plurality of panel means in a vertical movement direction to increase the watertightness between the plurality of panel means that are in contact with each other in the vertical direction, when the movement of the chain stops after the opening is fully closed by the plurality of panel means, the braking means brakes the driving means; releasing the braking applied by the braking means to the driving means before the compressing force is applied by the horizontal compressing means and the vertical compressing means; A watertight opening / closing device characterized in that after release, a process of applying the compressive force by the horizontal compressing means and the vertical compressing means is carried out.

2. The watertight opening / closing device according to claim 1, Execute a first horizontal compression process by the horizontal compression means; After the first horizontal compression process is completed, a first vertical compression process is performed by the vertical compression means; After the first vertical compression process is completed, a second horizontal compression process is further performed by the horizontal compression means; A watertight opening / closing device characterized in that a second vertical compression process is carried out by the vertical compression means after the second horizontal compression process is completed.

3. The watertight opening / closing device according to claim 1, A watertight opening / closing device characterized in that after the process of applying the pressure force by the horizontal compression means and the vertical compression means to increase the watertightness between the multiple panel means and the guide means and between the multiple panel means is completed, a series of open-stop-close operations are performed on the multiple panel means to remove slack in the chain that occurs after the process of applying the pressure force is released and the multiple panel means are returned to the state when the opening is fully closed.

4. a watertight opening / closing means for opening and closing the opening by moving a plurality of panel means connected by a chain from the periphery of the opening along a guide means; a drive means for rotating a chain wheel to move the chain along the guide means; braking means for applying a brake to the driving means when the movement of the chain stops; a horizontal compression means for applying a compression force to the plurality of panel means in a horizontal movement direction to enhance watertightness between the plurality of panel means and the guide means; a vertical compression means for applying a compression force to the plurality of panel means in a vertical movement direction to increase watertightness between the plurality of panel means that are in contact with each other in the vertical direction, A control method for a watertight opening / closing device, characterized in that when the movement of the chain stops after the opening is fully closed by the multiple panel means, the braking means applies a brake to the drive means, the braking of the braking means that was applied to the drive means before the horizontal compression means and the vertical compression means apply the compression force is released, and after the braking is released, the horizontal compression means and the vertical compression means apply the compression force.

5. 5. The method for controlling a watertight opening / closing device according to claim 4, Execute a first horizontal compression process by the horizontal compression means; After the first horizontal compression process is completed, a first vertical compression process is performed by the vertical compression means; After the first vertical compression process is completed, a second horizontal compression process is further performed by the horizontal compression means; After the second horizontal compression process is completed, the second vertical compression process is executed by the vertical compression means. A method for controlling a watertight opening / closing device.

6. 5. The method for controlling a watertight opening / closing device according to claim 4, A control method for a watertight opening / closing body device, characterized in that after the process of applying the pressure force by the horizontal compression means and the vertical compression means to increase the watertightness between the multiple panel means and the guide means and between the multiple panel means is completed, a series of open-stop-close operations are performed on the multiple panel means to remove slack in the chain that occurs after the process of applying the pressure force is released and the multiple panel means are returned to the state when the opening is fully closed.

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