JP5138240B2 - Elevator equipment - Google Patents

Description

  The present invention relates to an elevator apparatus that monitors the open / closed state of landing doors on each floor and that urgently stops raising / lowering of a car when the opening of the landing door is detected.

A landing door of a general elevator apparatus is provided with an engaging mechanism that can be engaged with a car door and a lock mechanism that is connected to the engaging mechanism and locks the landing door. Then, when the engagement mechanism is engaged with the car door, the landing mechanism is unlocked by receiving the power of the car door and the landing door is opened in conjunction with the opening of the car door. . The lock mechanism is provided with a door closing confirmation switch as a safety device. And the locked / unlocked state of the landing door is monitored by the operation control unit via the door closing confirmation switch. Here, the operation control unit raises and lowers the car only when all the doors of the car door and each landing door are closed. For this reason, when the operation control unit detects the unlocked state of the landing door during the raising and lowering of the car, the raising and lowering of the car is urgently stopped.
Here, when the car that is being lifted passes near the landing and the car door and the engaging mechanism are engaged with each other, if an earthquake occurs, the car door and the engaging mechanism are Will collide with each other. Thus, when the car door and the engagement mechanism collide with each other, the lock mechanism may be temporarily removed, and the landing door may be unlocked. Then, when the operation control unit detects that the car door is unlocked, the raising and lowering of the car is urgently stopped (containment accident occurs).
On the other hand, in the emergency operation system for elevators, when the car is in an emergency stop state, the emergency controller provided at the landing is operated by the operator to release the car's emergency stop state. The car is moved to the nearest landing (evacuation floor) (see, for example, Patent Document 1).

Japanese Patent Laid-Open No. 10-17233

  In the conventional elevator emergency operation device as described above, the emergency stop state of the car is released by the operation of the emergency controller by the manager, but the occurrence of the emergency stop of the car itself could not be suppressed. .

  The present invention has been made to solve the above-described problems, and an object thereof is to obtain an elevator apparatus that can reduce the frequency of occurrence of an emergency stop of a car due to an earthquake.

  An elevator apparatus according to the present invention is provided in a car that is raised and lowered in a hoistway, a car door that opens and closes a car doorway, a landing door that opens and closes a doorway of a car that is driven when the car door is opened and closed, and a landing door A lock mechanism that can be engaged with a car door and is operated in accordance with opening and closing of the car door when engaged with the car door, and is provided on the landing door. Locking / unlocking detection means for detecting the locked / unlocked state of the door, provided on the landing door, door opening detecting means for detecting movement of the landing door from the closed position to the opening direction, locking / unlocking detecting means, When an earthquake is detected via an earthquake detection unit that is connected to the door open detection means and detects an earthquake, the unlocking state of the landing door is detected to detect movement of the landing door from the closed position to the opening direction. Then stop raising and lowering the car A stop signal for causing the car to move, and detecting the unlocking state of the landing door to detect that the landing door is in the closed position, and controlling the landing door open / close confirmation unit that allows the car to move up and down, and the operation of the car In addition, an operation control unit that stops raising and lowering the car in response to a stop signal from the landing door opening / closing confirmation unit is provided.

  In the elevator apparatus according to the present invention, when the unlocking state of the landing door is detected and the landing door is detected to be in the closed position when an earthquake is detected, the elevator door opening / closing confirmation unit allows the raising / lowering of the car. Therefore, the frequency of emergency stop of the car due to the earthquake can be reduced.

The best mode for carrying out the present invention will be described below with reference to the drawings.
Embodiment 1 FIG.
1 is a block diagram showing an elevator apparatus according to Embodiment 1 of the present invention. (The figure which shows the landing door 2 from the hoistway side.)
The hall entrance 1 on each floor is opened and closed by a hall door 2. The landing door 2 has a high-speed door and a low-speed door (single door type landing door). A hanger plate 3 is provided above the hall entrance 1 on the inner wall of the hoistway. The hanger plate 3 is provided with a hanger rail 3 a that guides the opening and closing of the landing door 2. A plurality of door hangers 4 are provided above the landing door 2. A hanger roller 5 is attached to each door hanger 4. The hanger roller 5 is rotatably mounted on the hanger rail 3a. That is, the landing door 2 is suspended from the hanger rail 3 a via the door hanger 4 and the hanger roller 5.

  The door hanger 4 disposed on the door closing direction side (the left side in the figure) of the landing door 2 has an engagement roller 6, a latch 7 interlocked with the engagement roller 6, and a first contact attached to the upper surface of the latch 7. An operation member 8 and a second contact operation member 9 disposed so as to protrude upward from the hanger roller 5 are provided. The engagement roller 6 includes a car door vane 11 (dotted line in the figure) attached to a car door (not shown) when the car 10 being lifted (dotted line in the figure) passes near the landing doorway. Engage with. Further, when the engagement roller 6 is engaged with the car door vane 11, the engagement roller 6 receives the power of the car door and transmits a driving force to the landing door 2.

  On the inner wall of the hoistway on the outside in the length direction of the hanger plate 3 (left side in the figure), a catch 12 that can be engaged with the latch 7 and a door closing confirmation switch 13 as locking / unlocking detection means are provided. . Here, the latch 7 and the receiver 12 constitute a lock mechanism 14. That is, when the latch 7 and the catch 12 are engaged with each other, the landing door 2 is locked, and movement of the landing door 2 in the door opening direction is restricted. Further, when the latch 7 and the catch 12 are released from each other, the landing door 2 is unlocked, and the restriction on the movement of the landing door 2 in the door opening direction is released. The door closing confirmation switch 13 is a switch for detecting the locked state / unlocked state of the landing door 2. Further, the door closing confirmation switch 13 is disposed adjacent to the receiver 12. Further, the contact of the door closing confirmation switch 13 is operated by the first contact operating member 8.

  On the upper part of the door hanger 4, a door opening detector 15 is provided as a door opening detecting means for detecting movement of the landing door 2 from the closed position to the opening direction. The door open detector 15 has an operation element 15 a that is operated by contacting the second contact operating member 9. The door open detector 15 generates a signal indicating that the door is opened in response to the landing door 2 having moved from the fully closed position to the door open direction by a predetermined distance (for example, 20 mm) or more.

  The door closing confirmation switch 13 and the door opening detector 15 are connected to the control panel 16. The control panel 16 has an operation control unit (elevator operation control device) 16a that controls the operation of the car 10, and a landing door opening / closing confirmation unit (landing door door closing confirmation device) 16b that monitors the opening / closing status of the landing door 2. doing. The control panel 16 is connected to an earthquake detector 17 as an earthquake detector for detecting an earthquake. When the earthquake detector 17 detects the earthquake vibration, the earthquake detector 17 sends information indicating the occurrence of the earthquake and the intensity of the earthquake to the operation control unit 16a and the landing door opening / closing confirmation unit 16b. And the operation control part 16a will perform the control operation at the time of the earthquake of the cage | basket | car 10 if the detection content by the earthquake detector 17 is more than predetermined seismic intensity (for example, seismic intensity 5). Further, the operation control unit 16a stops the raising / lowering of the car 10 in response to a stop signal for stopping the raising / lowering of the car 10 from the landing door opening / closing confirmation unit 16b.

  When the landing door opening / closing confirmation unit 16b detects that an earthquake has occurred via the earthquake sensor 17 while the car 10 is being lifted, the landing door opening / closing confirmation unit 16b To check whether the landing door 2 is closed. When the landing door opening / closing confirmation unit 16b detects that the landing door 2 is in the closed position, the car 10 is detected until a predetermined time (for example, about 1 second) elapses after the unlocking state of the landing door 2 is detected. Temporary allowance of raising and lowering. The landing door opening / closing confirmation unit 16b allows the car 10 to continue to be lifted and lowered if the landing door 2 is locked when a predetermined time has elapsed. That is, when the landing door opening / closing confirmation unit 16b detects that the landing door 2 is unlocked, if it is determined that the lock mechanism 14 is temporarily disengaged due to the impact of the earthquake, the car 10 continues to move up and down. Let

  On the other hand, if the landing door opening / closing confirmation unit 16b detects unlocking of the landing door 2 without detecting an earthquake, the landing door 2 allows the car 10 to move up and down for about 0.1 second, and if the landing door 2 is locked during this time, The continuation of the raising / lowering of the car 10 is allowed. At this time, if the landing door 2 is in an unlocked state, the landing door opening / closing confirmation unit 16b determines whether the car 10 is raised or lowered and sends a stop signal to the operation control unit 16a. The landing door opening / closing confirmation unit 16b also detects when the landing door 2 is moved in the opening direction, or when it is detected that the landing door 2 is unlocked after a predetermined time has elapsed. 10 is stopped, and a stop signal is sent to the operation control unit 16a.

  Here, the control panel 16 can be constituted by a computer (not shown) having an arithmetic processing unit (CPU), a storage unit (ROM, RAM, hard disk, etc.) and a signal input / output unit. The storage unit of the computer of the control panel 16 stores programs for realizing the functions of the operation control unit 16a and the landing door opening / closing confirmation unit 16b.

  Next, the operation will be described. FIG. 2 is a flowchart showing the operation of the control panel 16 of FIG. 1 when an earthquake occurs. First, when an earthquake is detected by the earthquake detector 17, the control panel 16 executes an earthquake control operation (Step S1) and confirms whether or not the unlocked state of the landing door 2 is detected (Step S2). . When the unlocking state of the landing door 2 is detected, the control panel 16 checks whether or not the opening state of the landing door 2 is detected (step S3). If the opening state of the landing door 2 is not detected, that is, if the landing door 2 is closed, the control panel 16 passes a predetermined time (about 1 second) after detecting the unlocking state of the landing door 2. Until then, the car 10 continues to move up and down (step S4). Then, the control panel 16 confirms whether or not the landing door 2 is locked (step S5). When the landing door 2 is locked, or when the unlocking state of the landing door 2 is not detected (NO direction of step S2), the control panel 16 continues the control operation during the earthquake as it is (step S6). .

  Then, the control panel 16 stops the car 10 at the nearest floor, opens the car 10 for a predetermined time, and closes the door (step S7). Further, the control panel 16 confirms whether or not the door opening button in the car 10 has been operated (step S8). If the door opening button is operated, the car is opened for a certain period of time (15 to 20 seconds) (step S8). S9). Then, the control panel 16 stops the operation of the car 10 (step S10). On the other hand, when the opening state of the landing door 2 is detected (YES direction of step S3), when the landing door 2 is in the unlocked state after a predetermined time has elapsed from the time of detection of unlocking (NO direction of step S5), the control panel 16 urgently stops the raising / lowering of the car 10 (step S11), and puts the car 10 into an operation stop (step S10).

  In the elevator apparatus as described above, when the unlocking state of the landing door 2 is detected and the landing door 2 is detected to be in the closed position when an earthquake is detected, the elevator 10 is moved up and down. Since it is permitted by the confirmation unit 16b, the occurrence frequency of the emergency stop of the car 10 due to the earthquake can be reduced.

  Here, in the emergency operation device of the conventional elevator, in order to immediately recover from the emergency stop state of the car due to the earthquake, it is necessary to make an administrator for operating the emergency controller resident in the building. In the elevator apparatus as described above, if the landing door is temporarily unlocked due to the earthquake vibration, the elevator can be lifted and the emergency stop of the car 10 due to the earthquake can be avoided, so there is no need for a resident manager. It can be.

  In the first embodiment, the lateral opening type landing door has been described. However, the present invention can also be applied to a central opening type landing door.

  In Embodiment 1, it was confirmed in FIG. 2 whether the control panel 16 detected the unlocked state of the landing door 2 after executing the earthquake control operation. Regardless, when the earthquake detection unit detects an earthquake, it may be confirmed whether the landing door opening / closing confirmation unit has detected the unlocked state of the landing door.

  Further, in the first embodiment, the operation control unit 16a and the landing door opening / closing confirmation unit 16b receive information indicating the occurrence of the earthquake and the intensity of the earthquake from the earthquake detector 17, but the operation control unit and the landing door opening / closing are received. The confirmation unit may receive information indicating the occurrence of an earthquake and the intensity of the earthquake from, for example, a remote monitoring center.

  Furthermore, in the first embodiment, the door opening detector 15 is used as the door opening detecting means, but the door opening detecting means is not limited to this example, and the movement of the landing door from the closed position to the opening direction is performed. Anything that can be detected is acceptable.

  In addition, when the landing door opening / closing confirmation unit 16b according to the first embodiment detects an earthquake and detects that the landing door 2 is in the closed position by detecting the unlocking of the landing door 2, the unlocking of the landing door 2 is performed. The car 10 was temporarily allowed to move up and down until a predetermined time had elapsed since the lock state was detected, but the landing door open / close confirmation unit detects the unlocking of the landing door when it detects an earthquake. When it is detected that the landing door is in the closed position, the car may be allowed to move up and down as it is.

  Furthermore, in the first embodiment, when the unlocking of the landing door 2 is detected and the landing door 2 is in the closed position when an earthquake is detected, the unlocking state of the landing door 2 is detected. Although the elevator 10 was temporarily allowed to move up and down until a predetermined time had elapsed, the landing door open / close confirmation unit detected the unlocking of the landing door when the earthquake was detected, and the landing door was in the closed position. If the car passes through the section where the lock mechanism and the car door are engaged with each other (the section where the car is adjacent to the landing), the car may be allowed to move up and down temporarily. Good. In this case, the lock mechanism and the car door are engaged with each other by using, for example, a car position detector provided on the car and a door zone plate provided on the inner wall of the hoistway for operating the car position detector. This makes it possible to detect the current section.

BRIEF DESCRIPTION OF THE DRAWINGS It is a block diagram which shows the elevator apparatus by Embodiment 1 of this invention. It is a flowchart which shows the operation | movement at the time of the occurrence of an earthquake of the control panel of FIG.

Explanation of symbols

  2 landing doors, 10 cars, 13 door closing confirmation switch (locking / unlocking detection means), 14 lock mechanism, 15 door opening detector (door opening detection means), 16a operation control unit, 16b landing door opening / closing confirmation unit, 17 earthquake detection (Earthquake detection unit).

Claims (3)

A car that is raised and lowered in the hoistway,
A car door that opens and closes the doorway of the car,
A landing door that is driven in accordance with the opening and closing of the car door and opens and closes the entrance of the landing,
A locking mechanism provided on the landing door, engageable with the car door, operated in accordance with opening and closing of the car door when engaged with the car door, and locking the landing door;
Locking / unlocking detecting means provided on the landing door for detecting the locking state / unlocking state of the landing door by the locking mechanism,
A door opening detection means provided on the landing door for detecting movement of the landing door from the closed position to the opening direction;
Connected to the unlocking detecting means and the door opening detecting means, and detecting an unlocking state of the landing door by detecting an earthquake via an earthquake detecting unit for detecting an earthquake, and closing the landing door When the movement from the position to the opening direction is detected, a stop signal for stopping the raising and lowering of the car is generated, and the unlocking state of the landing door is detected to detect that the landing door is in the closed position. A landing door opening / closing confirmation unit that allows the raising and lowering of the car, and an operation control unit that controls the operation of the car and stops the raising / lowering of the car in response to a stop signal from the landing door opening / closing confirmation unit. The elevator apparatus characterized by this.   The landing door opening / closing confirmation unit detects an unlocked state of the landing door and detects that the landing door is in a closed position when an earthquake is detected via the earthquake detection unit. The car is allowed to move up and down until a predetermined time elapses from the detection of the unlocked state, and a stop signal is generated when the unlocking state of the landing door is detected after the predetermined time elapses. Item 2. The elevator apparatus according to Item 1.   When the landing door opening / closing confirmation unit detects an earthquake via the earthquake detection unit and detects the unlocking state of the landing door and detects that the landing door is in the closed position, When the car passes through the section where the car door is engaged with each other, the car is allowed to move up and down, and when the car goes out of the section, the landing door is unlocked. The elevator apparatus according to claim 1, wherein a stop signal is generated upon detection.

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