JP2018203475A - Doorway opening/closing system for elevator - Google Patents

Abstract

To obtain a doorway opening/closing system for an elevator, by which a landing doorway can be closed more securely.SOLUTION: In a doorway opening/closing system for an elevator, a jamb 19 surrounding a landing doorway 15 has a communication hole 31 passing through the jamb 19 and allowing communication between an entrance 14 and a hoist way 1. An opening/closing damper 32 opens/closes the communication hole 31. A control device 8 controls operation of the landing door 16 that opens/closes the landing doorway 15 and also controls operation of the opening/closing damper 32 according to control of operation of the landing door 16.SELECTED DRAWING: Figure 2

Description

  The present invention relates to an elevator door opening / closing system for opening / closing a landing doorway.

  In the elevator, the car doorway is opened and closed by moving the car door by the driving force of the door drive motor mounted on the car. In the elevator, the landing doorway is opened and closed by moving the landing door while being engaged with the car door while the car is stopped on the floor.

  The landing door is always urged in a direction to close the landing doorway by a self-closing device including a weight or a spring. When the landing door performs an opening operation to open the landing doorway, the landing door moves against the urging force of the self-closing device. When the landing door performs a closing operation for closing the landing doorway, the landing door moves in a direction in which the urging force of the self-closing device is applied.

  On the other hand, in the elevator, when the atmospheric pressure, the air temperature, and the like change, the air flow in the vertical direction according to the change in the atmospheric pressure, the air temperature, etc. is generated in the hoistway as draft air. Strong drafts are likely to occur on hoistways provided in high-rise buildings. As a result, in the elevator, the car door and the landing door are difficult to move due to the draft-like pressure, and the car doorway and the landing doorway may be difficult to open and close.

  In particular, when the landing door closes, when the landing door reaches the position immediately before the landing door is fully closed, the engagement between the landing door and the car door is disengaged, and the landing door is only moved by the urging force of the self-closing device. Due to the movement, the entrance / exit tends to be difficult to close due to the draft pressure.

  Conventionally, in order to more securely close the landing doorway with the landing door, a door closing operation auxiliary device different from the self-closing device is attached to the door frame, and when the landing door reaches the position immediately before the fully closed position, There has been proposed an elevator door device in which a landing door is pushed by a pressing member of a door closing operation assisting device in a direction to close the doorway (see, for example, Patent Document 1).

JP 2012-180209 A

  However, in the conventional elevator door device disclosed in Patent Document 1, the door closing operation assisting device causes the pressing member to collide with the landing door and press the landing door, so that the door closing occurs due to wear or deformation of the pressing member. The auxiliary operation device is likely to break down. In addition, since the force with which the door closing operation assisting device pushes the landing door is limited, depending on the draft wind pressure received by the landing door, it may be difficult to close the landing doorway even if the door closing operation assisting device pushes the landing door. There is also a risk that it will not be resolved.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide an elevator door opening / closing system that can more reliably close a landing doorway.

  The elevator door opening and closing system according to the present invention includes a landing door that opens and closes a landing doorway, an opening and closing damper that opens and closes a communication hole that passes through a three-way frame surrounding the landing doorway and connects the landing and the hoistway, and the operation of the landing door And a control device for controlling the operation of the open / close damper according to the control of the operation of the landing door.

  According to the elevator door opening / closing system of the present invention, by opening the communication hole with the opening / closing damper during the operation of the landing door, a part of the draft can be released through the communication hole different from the landing doorway. Thereby, the pressure of the draft wind which a landing door receives can be made small, and a landing doorway can be closed more reliably.

It is a longitudinal cross-sectional view which shows the elevator by Embodiment 1 of this invention. It is a front view which shows the hall entrance provided in the 1st floor of the building of FIG. It is a flowchart which shows control of the car door and landing door by the control apparatus of FIG. It is a flowchart which shows control of the opening / closing damper by the control apparatus of FIG. It is a flowchart which shows control of the opening / closing damper by the control apparatus of the entrance / exit opening / closing system of the elevator by Embodiment 2 of this invention.

Preferred embodiments of the present invention will be described below with reference to the drawings.
Embodiment 1 FIG.
1 is a longitudinal sectional view showing an elevator according to Embodiment 1 of the present invention. In the figure, a car 2 and a counterweight 3 are provided in the hoistway 1 so as to be able to move up and down. A machine room 4 is provided in the upper part of the hoistway 1. The machine room 4 is provided with a hoisting machine 6 having a drive sheave 5, a deflecting wheel 7 arranged away from the drive sheave 5, and a control device 8 that controls the operation of the elevator.

  A plurality of cords 9 for suspending the car 2 and the counterweight 3 in the hoistway 1 are wound around the drive sheave 5 and the deflecting wheel 7. As the cord-like body 9, for example, a rope or a belt is used. In this example, one end of the cable-shaped body 9 is connected to the car 2, and the other end of the cable-shaped body 9 is connected to the counterweight 3. That is, in this example, the roping method in which the car 2 and the counterweight 3 are suspended by the cable-like body 9 is the 1: 1 roping method.

  The drive sheave 5 is rotated by the driving force of the motor of the hoisting machine 6. The car 2 and the counterweight 3 move up and down in the hoistway 1 according to the rotation of the drive sheave 5.

  A car doorway 10 is formed in the car 2. Further, the car 2 is provided with a car door device 11. The car door device 11 includes a pair of car doors 12 that open and close the car doorway 10 and a door drive motor 13 that generates a driving force that moves the pair of car doors 12 relative to the car 2.

  The pair of car doors 12 move in conjunction with each other in the width direction of the car doorway 10 by the driving force of the door drive motor 13. The car doorway 10 is opened and closed by the movement of the pair of car doors 12 with respect to the car doorway 10.

  On the walls that partition the hall 14 and the hoistway 1 on each floor of the building, a hall entrance 15 that connects the hall 14 and the hoistway 1 to each other is formed. Each floor is provided with a pair of landing doors 16 for opening and closing the landing doorway 15. The pair of landing doors 16 are movable in conjunction with each other in the width direction of the landing doorway 15. The landing entrance 15 is opened and closed by the movement of the pair of landing doors 16 relative to the landing entrance 15.

  In a state where the car 2 is stopped on the floor, the car entrance 10 and the landing entrance 15 face each other in the horizontal direction. When the car doorway 10 and the landing doorway 15 face each other, each car door 12 moves in the width direction of the car doorway 10 so that the car door 12 engages with the landing door 16 via the engaging device 17. To do. The car doorway 10 and the hall doorway 15 are each opened and closed by moving the hall door 16 and the car door 12 together while the car door 12 is engaged with the hall door 16. The control device 8 controls the operation of each car door 12 and each landing door 16 by controlling the door drive motor 13 of the car door device 11.

  The pair of landing doors 16 are always urged in a closing direction for closing the landing doorway 15 by a self-closing device (not shown) including a weight or a spring. When the pair of landing doors 16 perform an opening operation to open the landing doorway 15, the landing doors 16 move against the urging force of the self-closing device.

  On the other hand, when the pair of landing doors 16 performs a closing operation for closing the landing doorway 15, the landing door 16 moves in a direction in which the urging force of the self-closing device is applied. Further, when the landing door 16 is closed, the landing door 16 and the car door are moved to the position immediately before reaching the fully closed position where the landing door 15 is fully closed while engaging with the car door 12. 12 is disengaged, and the landing door 16 is moved to the fully closed position by the urging force of the self-closing device. When each landing door 16 reaches the fully closed position, the closing operation of the landing door 16 is completed.

  FIG. 2 is a front view showing a landing entrance 15 provided on the first floor of the building of FIG. A three-sided frame 19 that surrounds the hall entrance 15 is provided on the partition wall between the hall 14 and the hoistway 1 on each floor. The three-way frame 19 has a pair of vertical frames 20 positioned on both sides in the width direction of the hall entrance 15 and an upper frame 21 connected between the pair of vertical frames 20 and positioned above the hall entrance 15. ing. The landing entrance 15 is formed by the floor of the landing 14 and the three-way frame 19.

  On each floor, a hall operating panel 22 is provided on one vertical frame 20 of the three-way frame 19. The hall operation panel 22 includes an accommodation box in which an operation panel device is accommodated, an operation panel cover 23 that covers the accommodation box, an upward landing button 24 and a downward landing button 25 that are respectively provided on the operation panel cover 23. have. The storage box of the hall operating panel 22 is accommodated in an opening provided in one vertical frame 20. When at least one of the upward hall button 24 and the downward hall button 25 is operated, a hall call signal corresponding to the operated hall button is sent from the hall operation panel 22 to the control device 8. The control device 8 controls the operation of the elevator based on information from the hall operating panel 22.

  A door closing detection switch 18 is provided above the landing doorway 15 to detect that each landing door 16 has reached the fully closed position where the landing doorway 15 is fully closed, that is, the closing operation of each landing door 16 is completed. It has been. When the door closing detection switch 18 detects that the closing operation of each landing door 16 is completed, a detection signal is sent from the door closing detection switch 18 to the control device 8. The control device 8 controls the operation of each car door 12 and each landing door 16 based on information from the door close detection switch 18.

  In the building, a draft wind that is an air flow passing through the hoistway 1 and the landing 14 is generated in accordance with changes in the atmospheric pressure, the air temperature, and the like. If the landing door 16 receives draft pressure during the opening / closing operation of the landing door 16, the landing door 16 becomes difficult to move, and the landing doorway 15 may be difficult to open and close. Therefore, in this example, the control device 8 does not close the landing doors 16 even after a set time T1, for example, T1 = 10 seconds has elapsed since the start of closing the car doors 12 and the landing doors 16. When not completed, control is performed to reverse the closing operation of each car door 12 and each landing door 16 to the opening operation.

  The three-way frame 19 provided in at least one of the floors is formed with a communication hole 31 that penetrates the three-way frame 19 and communicates the hoistway 1 and the landing 14 with each other. Thereby, a part of the draft generated in the building flows from one of the landing 14 and the hoistway 1 to the other through the communication hole 31 different from the landing doorway 15, and the pressure difference between the landing 14 and the hoistway 1 is small. Become.

  In general, the strength of the draft that occurs in a building tends to increase on the lower floor of the building, for example, the first floor or the entrance floor. Therefore, in this example, in order to reduce the draft wind pressure received by the landing door 16, as shown in FIG. 1, the communication holes 31 are provided only in the three-sided frame 19 provided on the first floor of each floor of the building. It has been.

  The communication hole 31 is formed in the upper frame 21 of the three-way frame 19. The communication hole 31 is provided with an open / close damper 32 that opens and closes the communication hole 31. The upper frame 21 is provided with a damper driving device 33 having a motor for operating the open / close damper 32.

  The open / close damper 32 has a plurality of movable blades 34 arranged in the communication hole 31. The plurality of movable blades 34 move in conjunction with each other by an interlocking mechanism (not shown). The damper driving device 33 generates a driving force that moves the plurality of movable blades 34. The communication hole 31 is opened and closed by the movement of the plurality of movable blades 34 by the driving force of the damper driving device 33.

  The control device 8 controls the operation of the open / close damper 32 by controlling the damper drive device 33. The control device 8 controls the operation of the open / close damper 32 in accordance with the control of the operation of each car door 12 and each landing door 16. The control device 8 in this example normally closes the communication hole 31 with the opening / closing damper 32 and starts the closing operation of each car door 12 and each landing door 16, and then a set time T1, for example, T1 = 10 seconds. When the closing operation of each landing door 16 is not completed even after the elapse of time, the opening / closing damper 32 is operated to control the opening / closing damper 32 to open the communication hole 31.

  On each floor of the building, a fire detector (not shown) for detecting a fire in the building is provided. As the fire detector, for example, at least one of a heat detector, a smoke detector, and a flame detector is used. When the fire detector detects a fire, information on the fire detector that detected the fire is sent to the control device 8. The control device 8 controls the operation of the elevator based on information from the fire detector. The control device 8 in this example normally closes the communication hole 31 with the opening / closing damper 32, and when the fire detector detects a fire, the control device 8 prohibits the opening / closing damper 32 from opening the communication hole 31 and operates the elevator. To switch from normal operation to fire control operation. The elevator door opening / closing system includes a car door device 11, each landing door 16, an opening / closing damper 32, and a control device 8.

  Next, control of the car door 12 and the landing door 16 by the control device 8 will be described. FIG. 3 is a flowchart showing control of the car door 12 and the landing door 16 by the control device 8 of FIG. During normal operation of the elevator, whether or not the fire detector has detected a fire is always determined by the control device 8 based on information from the fire detector (S1). When a fire is detected by the fire detector, the operation of the elevator is switched from the normal operation to the fire control operation by the control of the control device 8 (S2). As a result, the car 2 stands by at the nearest floor with the car doorway 10 and the landing doorway 15 open.

  If the fire is not detected by the fire detector and the car 2 stops on the floor (S3), the control device 8 controls the door drive motor 13 to open the car door 12 and the landing door 16 (hereinafter referred to as “door”). The opening operation is started (S4).

  Then, after the door opening operation is completed (S5), the closing operation of the car door 12 and the landing door 16 (hereinafter referred to as “door closing operation”) is started by the door closing command of the control device 8 (S6).

  Thereafter, it is determined by the control device 8 whether or not the closing operation of the landing door 16 is completed (S7). When the closing operation of the landing door 16 is completed, the car 2 can be moved, and the normal operation of the elevator is continued (S8).

  When the closing operation of the landing door 16 is not completed, it is determined by the control device 8 whether or not the set time T1 has elapsed since the door closing operation started (S9). If the set time T1 has not elapsed since the start of the door closing operation, it is determined whether or not the closing operation of the landing door 16 has been completed (S7) and the door closing operation has started. The control device 8 repeatedly determines whether or not the set time T1 has elapsed (S9).

  Thereafter, when the set time T1 elapses in a state where the closing operation of the landing door 16 is not completed, the doors in which the operations of the car door 12 and the landing door 16 are reversed from the closing operation to the opening operation by the control of the control device 8. An inversion operation is performed (S10).

  Thereafter, when the door opening operation is completed again (S5), a series of control from the start of the door closing operation to the door reversing operation is repeated until the closing operation of the landing door 16 is completed (S6, S7, S9, S10). ). Thereafter, when the closing operation of the landing door 16 is completed, the car 2 can be moved, and the normal operation of the elevator is continued (S8).

  Next, control of the open / close damper 32 by the control device 8 will be described. FIG. 4 is a flowchart showing control of the open / close damper 32 by the control device 8 of FIG. During normal operation of the elevator, the control device 8 determines whether or not the fire detector has detected a fire based on the information from the fire detector while maintaining the communication hole 31 closed by the open / close damper 32 (S11). (S12). When a fire is detected by the fire detector, the control device 8 controls to prevent the opening / closing damper 32 from being opened and maintain the communication hole 31 closed (S13).

  When the door closing operation is started by the door closing command of the control device 8 in a state where the fire detector does not detect a fire (S14), it is determined by the control device 8 whether or not the closing operation of the landing door 16 is completed. (S15). When the closing operation of the landing door 16 is completed, the opening operation of the opening / closing damper 32 is prohibited, and the communication hole 31 is maintained closed (S13).

  On the other hand, when the closing operation of the landing door 16 is not completed, it is determined by the control device 8 whether or not the same set time T1 as when the door reversing operation is performed has elapsed since the start of the door closing operation (S16). ). If the set time T1 has not elapsed since the start of the door closing operation, it is determined whether or not the closing operation of the landing door 16 has been completed (S15), and the door closing operation has started. The control device 8 repeatedly determines whether or not the set time T1 has elapsed (S16).

  Thereafter, when the set time T1 has elapsed with the closing operation of the landing door 16 not completed, the open / close damper 32 is operated and the communication hole 31 is opened under the control of the control device 8 (S17). In this example, the opening / closing damper 32 for opening the communication hole 31 is opened simultaneously with the door reversing operation.

  Thereafter, whether or not the closing operation of the landing door 16 is completed is determined again by the control device 8 (S18). When the closing operation of the landing door 16 is not completed, the determination as to whether or not the closing operation of the landing door 16 is completed is repeated until the closing operation of the landing door 16 is completed.

  When the closing operation of the landing door 16 is completed after the communication hole 31 is opened, the open / close damper 32 is operated and the communication hole 31 is closed under the control of the control device 8 (S19).

  In such an elevator door opening / closing system, the communication hole 31 formed in the three-way frame 19 surrounding the landing doorway 15 is opened and closed by the opening / closing damper 32, and the control device 8 controls the opening / closing damper according to the control of the operation of the landing door 16. Since the operation of the door 32 is controlled, by opening the communication hole 31 with the opening / closing damper 32 during the operation of the landing door 16, a part of the draft can be released through the communication hole 31 different from the landing doorway 15. Thereby, the pressure of the draft wind which the landing door 16 receives at the time of operation | movement of the landing door 16 can be made small, and the landing doorway 15 can be closed more reliably.

  The control device 8 controls the opening / closing damper 32 to open the communication hole 31 when the closing operation of the landing door 16 is not completed even after the set time T1 has elapsed after the closing operation of the landing door 16 is started. Therefore, the open / close damper 32 can be operated only when necessary, and the life of the open / close damper 32 can be extended.

  Further, the control device 8 performs the door reversing operation when the closing operation of the landing door 16 is not completed even after the set time T1 has elapsed since the closing operation of the landing door 16 is started. Failure due to load or the like can be prevented.

  In addition, when the fire detector detects a fire, the control device 8 prohibits the opening / closing damper 32 from opening the communication hole 31, so that the communication hole 31 can be closed in the event of a fire, and the hoistway 1 and the landing 14 can be connected. It is possible to partition more reliably. Thereby, the spread of fire can be prevented and the section of the hall 14 can be used as a fire prevention section.

  In the above example, when the closing operation of the landing door 16 is not completed even after the set time T1 has elapsed since the closing operation of the car door 12 and the landing door 16 is started, The door reversing operation in which the operation is reversed from the closing operation to the opening operation and the damper opening operation in which the communication hole 31 is opened by the opening / closing damper 32 are performed at the same time. The damper opening operation may be performed before the door reversing operation.

  In the above example, when the set time T1 elapses without the door closing operation being completed, the door reversing operation is performed under the control of the control device 8, but the door reversing operation is not performed, The door closing operation may be continued until the closing operation is completed. In this case, when the set time T1 elapses after the door closing operation is started, the open / close damper 32 is operated to open the communication hole 31, so that it is considered that the door closing operation is completed after the communication hole 31 is opened. In this way, the time for performing the door reversing operation can be saved, and the time for opening and closing the car door 12 and the landing door 16 can be further shortened.

Embodiment 2. FIG.
In the first embodiment, when the closing operation of the landing door 16 is not completed even after the set time T1 has elapsed from the start of the door closing operation, the control device 8 performs control to open the communication hole 31 by operating the opening / closing damper 32. However, the control device 8 may perform control to open the communication hole 31 by operating the opening / closing damper 32 at the start of the door closing operation.

  FIG. 5 is a flowchart showing control of the opening / closing damper 32 by the control device 8 of the elevator entrance / exit opening / closing system according to Embodiment 2 of the present invention. In the second embodiment, the control (S11 to S14) of the open / close damper 32 by the control device 8 until the door closing operation starts in a state where the fire detector does not detect the fire is the open / close damper in the first embodiment. This is the same as the control 32.

  When the door closing operation is started by the door closing command of the control device 8 in a state where the fire detector does not detect a fire (S14), the open / close damper 32 operates to open the communication hole 31 under the control of the control device 8. (S21). Thereafter, it is determined by the control device 8 whether or not the closing operation of the landing door 16 is completed (S22).

  When the closing operation of the landing door 16 is not completed, the determination as to whether or not the closing operation of the landing door 16 is completed is repeated until the closing operation of the landing door 16 is completed. Thereafter, when the closing operation of the landing door 16 is completed, the open / close damper 32 is operated and the communication hole 31 is closed under the control of the control device 8 (S23).

  The control of the car door 12 and the landing door 16 by the control device 8 is the same as in the first embodiment. Other configurations and operations are the same as those in the first embodiment.

  In such an elevator door opening / closing system, the control device 8 controls the opening / closing damper 32 to open the communication hole 31 at the start of the closing operation of the landing door 16, so the magnitude of the draft wind pressure received by the landing door 16 is large. The landing door 16 can be closed in a state in which the car door is reduced, and the time for opening and closing the car doorway 10 and the hall doorway 15 can be shortened.

  In the above example, when the set time T1 has passed without the door closing operation being completed, the door reversing operation is performed under the control of the control device 8, but the door reversing operation is not performed, The door closing operation may be continued until the closing operation is completed.

  Moreover, in each said embodiment, although the communicating hole 31 opened and closed by the opening / closing damper 32 is formed only in the three-way frame 19 of the landing 14 on the first floor, it is not limited to this, and it opens and closes by the opening / closing damper 32. The communication hole 31 may be formed only in the three-way frame 19 of the hall 14 on the top floor, or the communication hole 31 opened and closed by the opening / closing damper 32 may be formed in the three-side frame 19 of the hall 14 on all floors. Even in this case, a part of the draft wind can be released through the communication hole 31 different from the hall entrance 15 and the magnitude of the draft wind pressure received by the hall door 16 can be reduced.

  In each of the above embodiments, the communication hole 31 that is opened and closed by the opening and closing damper 32 is formed only in the upper frame 21 of the three-way frame 19, but the position at which the communication hole 31 that is opened and closed by the opening and closing damper 32 is formed. May be at any position on the three-way frame 19. For example, the communication hole 31 may be formed in one vertical frame 20 of the three-way frame 19, or the communication hole 31 may be formed in each of the upper frame 21 and the pair of vertical frames 20. Alternatively, a communication hole may be provided in the operation panel cover 23 and the storage box of the hall operation panel 22 so that the hall 14 and the hoistway 1 communicate with each other through the communication hole provided in the hall operation panel 22.

  Moreover, in each said embodiment, you may provide a fire detector in the three-way frame 19 of each floor.

  In each of the above embodiments, the number of communication holes 31 formed in the three-way frame 19 is one. However, a plurality of communication holes 31 are formed in the three-way frame 19, and an opening / closing damper is provided in the plurality of communication holes 31. 32 may be provided. In this case, each communication hole 31 is individually opened and closed by the opening / closing damper 32. In this case, the control device 8 may individually control the operation of each open / close damper 32 according to the control of the operation of the landing door 16, or each open / close damper 32 according to the control of the operation of the landing door 16. The operations may be controlled to be the same. In this way, draft air can be passed through the plurality of communication holes 31 different from the landing doorway 15, and the amount of draft air passing through the landing doorway 15 can be increased. Thereby, the magnitude of the draft wind pressure received by the landing door 16 can be further reduced, and the landing doorway 15 can be more reliably closed.

  1 hoistway, 8 control device, 14 landing, 15 landing entrance, 16 landing door, 19 three-way frame, 31 communication hole, 32 open / close damper.

Claims (5)

A landing door that opens and closes the landing doorway,
An opening / closing damper that opens and closes a communication hole that passes through the three-way frame that surrounds the landing doorway and communicates the landing and the hoistway, and controls the operation of the landing door, and controls the operation of the landing door according to the control of the landing door An elevator door opening / closing system equipped with a control device that controls the operation of the open / close damper.   2. The control device according to claim 1, wherein the control device opens the communication hole with the opening / closing damper when the closing operation of the landing door is not completed even after a set time has elapsed since the closing operation of the landing door is started. Elevator door opening / closing system.   2. The elevator entrance / exit opening / closing system according to claim 1, wherein the control device opens the communication hole with the opening / closing damper at the start of the closing operation of the landing door. A plurality of the communication holes are formed in the three-way frame,
The elevator opening / closing system according to any one of claims 1 to 3, wherein the plurality of communication holes are individually opened and closed by the opening / closing damper.   The elevator control system according to any one of claims 1 to 4, wherein when the fire detector detects a fire, the control device prohibits the opening / closing damper from opening the communication hole.

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