JP2007217171A - Elevator system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To securely operate an elevator in a building provided with a base isolation device in an intermediate layer even if the building is greatly displaced in the horizontal direction at a position where the base isolation device is installed. <P>SOLUTION: This elevator system is provided with a first hoisting machine 10 installed above the base isolation device 1 in the building 2 provided with the base isolation device 1 in the intermediate layer, a first elevator car 4 elevated and lowered by the first hoisting machine 10 and operated at a higher story than that of the base isolation device 1, a second hoisting machine 16 installed below the base isolation device 1 in the building 2, and a second elevator car 6 elevated and lowered by the second hoisting machine 16 and operated at a lower story than that of the base isolation device 1. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an elevator system, and more particularly to an elevator system used in a building having a seismic isolation device in an intermediate layer.

  In recent years, buildings that have improved seismic resistance by providing seismic isolation devices in the middle class have become widespread. In these buildings, when an earthquake occurs, the building is displaced horizontally above and below the base isolation device to prevent or reduce damage to the building due to the earthquake.

  In a building equipped with such a seismic isolation device, the elevator car and the counterweight guide rail provided in the elevator hoistway may be deformed or distorted at the position where the seismic isolation device is provided. is there. When such deformation and distortion occur, the elevator car may not be lifted or lowered due to this.

For this reason, as described in Patent Document 1 below, in a building having a seismic isolation device in the middle layer, even if the building is displaced in the horizontal direction at the position of the seismic isolation device due to the occurrence of an earthquake, the elevator car is An invention of an elevator system that can pass through a floor provided with a seismic isolation device has been proposed.
Japanese Patent Laid-Open No. 11-35252

  However, in the elevator system described above, the following points are not considered.

  Depending on the seismic intensity of the earthquake and the building conditions, the horizontal displacement of the building at the location where the seismic isolation device is installed will be larger than the predicted value, and the guide rail may be deformed or distorted. A state occurs in which the elevator car cannot pass through the provided position.

  When such a situation occurs, the elevator cannot be used as a means for evacuating the building after the earthquake.

  The present invention has been made to solve such a problem, and its purpose is to greatly displace the building in the horizontal direction at the position where the seismic isolation device is provided in the building where the seismic isolation device is provided in the intermediate layer. Even if it is a case, it is providing the elevator system which can operate | move the elevator within the building reliably.

  A first feature according to an embodiment of the present invention is that, in an elevator system, a first hoisting machine installed above the seismic isolation device of a building having a seismic isolation device in an intermediate layer, and the first hoisting machine The first elevator car that is moved up and down and operated on the upper floor from the seismic isolation device, the second hoisting machine installed below the seismic isolation device of the building and the second hoisting machine And a second elevator car operated on a lower floor than the seismic isolation device.

  According to the present invention, even when the building is largely displaced in the horizontal direction at the position where the seismic isolation device is provided, the elevator car can be operated on both the lower floor and the lower floor from the seismic isolation device.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(First embodiment)
As shown in FIG. 1, the elevator system according to the first embodiment of the present invention is provided in a building 2 including a seismic isolation device 1 in an intermediate layer. This elevator system is a group management system that controls the raising and lowering of a plurality of elevator cars. The first elevator hoistway 3 and the first elevator hoistway 3 that are installed above the floor where the seismic isolation device 1 is provided. A first elevator car 4 that moves up and down in the elevator hoistway 3, a second elevator hoistway 5 that is installed below the floor where the seismic isolation device 1 is provided, and the second elevator hoistway 5 A second elevator car 6 that moves up and down, a third elevator hoistway 7 that is installed through the position where the seismic isolation device 1 is provided, and a third elevator that elevates and lowers in the third elevator hoistway 7 A car 8 is provided.

  A first machine room 9 is provided at the upper end of the first elevator hoistway 3, and a first hoisting machine 10 is installed in the first machine room 9. A drive sheave 11 is connected to the rotating shaft of the first hoisting machine 10, and a main rope 13 is wound around the drive sheave 11 and the deflecting sheave 12. A first elevator car 4 is suspended and supported at one end of the main rope 13, and a first counterweight 14 is suspended and supported at the other end of the main rope 13.

  A second machine room 15 is provided at the upper end of the second elevator hoistway 5, and a second hoisting machine 16 is installed in the second machine room 15. A driving sheave 17 is connected to the rotating shaft of the second hoisting machine 16, and a main rope 19 is wound around the driving sheave 17 and the deflecting sheave 18. A second elevator car 5 is suspended and supported at one end of the main rope 19, and a second counterweight 20 is suspended and supported at the other end of the main rope 19.

  A third machine room 21 is provided at the upper end of the third elevator hoistway 7, and a third hoisting machine 22 is installed in the third machine room 21. A drive sheave 23 is connected to the rotating shaft of the third hoisting machine 22, and a main rope 25 is wound around the drive sheave 23 and the deflecting sheave 24. A third elevator car 8 is suspended and supported at one end of the main rope 25, and a third counterweight 26 is suspended and supported at the other end of the main rope 25.

  FIG. 2 is a block diagram showing a control configuration of the elevator system. This elevator system has an elevator control device 27 for raising and lowering the first elevator car 4, the second elevator car 6, and the third elevator car 8. A first hoisting machine 10, a second hoisting machine 16, and a third hoisting machine 22 are connected to the elevator control device 27. Furthermore, the elevator control device 27 is connected to an earthquake detector 28, various sensors 29, various buttons 30, and a speaker 31.

  The elevator control device 27 includes a ROM that stores various programs and fixed data, a RAM that stores data transmitted from the earthquake detector 28, various sensors 29, various buttons 30 and the like, and data stored in the RAM. And a CPU for performing various calculations using programs stored in the ROM.

  The seismic detector 28 has a function of sensing vibrations at or above the first sensing level (for example, P waves above the set value) and vibrations at or above the second sensing level (for example, S waves above the set value). The various sensors 29 include sensors for detecting the stop positions of the elevator cars 4, 6, 8, and sensors for detecting the ascending / descending speed of the elevator cars 4, 6, 8. The various buttons 30 include a call button for calling the elevator cars 4, 6, 8 provided in the elevator hall, a destination floor instruction button provided in each elevator car 4, 6, 8, and the like. . The speaker 31 is provided in the elevator hall and the elevator cars 4, 6, and 8 to broadcast various guidance broadcasts.

  FIG. 3 is a flowchart showing the control contents of the elevator system when an earthquake occurs. First, it is determined whether or not the seismic detector 28 has detected a P wave greater than a set value (S1). When a P wave exceeding the set value is detected (YES in S1), the elevator control operation is started (S2). As a result of this control operation, all elevator cars 4, 6, and 8 are temporarily stopped at the nearest floor, and the elevator car 4, 4, and 8 car doors and the elevator cars 4, 6, and 8 are temporarily stopped. The elevator hall hold door is opened synchronously. As a result, users in the elevator cars 4, 6, 8 can evacuate to the elevator hall on the floor where the elevator cars 4, 6, 8 are stopped.

  After the control operation is started, it is determined whether or not the seismic detector 28 has detected an S wave exceeding the set value (S3), and a set time (for example, 1 minute) has elapsed since the start of the control operation. A determination is made whether or not (S4). If an S wave equal to or greater than the set value is detected before the set time elapses (NO in S4) (YES in S3), the elevator cars 4, 6, and 8 are maintained in a stopped state (S5). The elevator cars 4, 6, and 8 maintained in a stopped state can be restarted by manual switching by a serviceman or a building manager.

  If an S wave exceeding the set value is not sensed (NO in S3) and the set time has passed (YES in S4), the mode is shifted to the rescue operation mode at the time of an earthquake and the elevator hall call button is pressed. (S6). When the call button is pressed (YES in S6), it is determined whether the pressed call button is a floor above the seismic isolation device 1 (S7).

  If the pressed call button is on the floor above the seismic isolation device 1 (YES in S7), the speaker indicates that the first elevator car 4 that is raised and lowered at a position above the seismic isolation device 1 is driven. 31 (S8). Here, an informing means for informing which elevator is available is executed. Further, the first elevator car 4 is driven in synchronization with the notification from the speaker 31 (S9). In this case, the first elevator car 4 carries the user who has entered the first elevator car 4 to the floor designated as the evacuation floor, for example, the top floor.

  On the other hand, if the pressed call button is on the floor below the seismic isolation device 1 (NO in S7), the second elevator car 6 that is lifted and lowered at a position below the seismic isolation device 1 is driven. Is notified from the speaker 31 (S10). Here, an informing means for informing which elevator is available is executed. Further, the second elevator car 6 is driven in synchronization with the notification from the speaker 31 (S11). The second elevator car 6 in this case carries the user who has entered the second elevator car 6 to the floor designated as the evacuation floor, for example, the entrance floor.

  In the earthquake rescue operation mode, the third elevator car 8 that moves up and down in the third elevator hoistway 7 installed through the position where the seismic isolation device 1 is provided is not driven.

  In such a configuration, according to the first embodiment, in the building 2 having the seismic isolation device 1 in the intermediate layer, in the rescue operation mode at the time of earthquake after the earthquake occurs, the first floor is higher than the seismic isolation device 1. The 1 elevator car 4 is operated, and the second elevator car 6 is operated on the lower floor than the seismic isolation device 1.

  Therefore, even if the elevator guide rail is deformed or distorted at the position of the seismic isolation device 1 and the elevator car cannot pass through that position, the upper floor and the lower floor of the seismic isolation device 1 are separately provided. Elevator operation can continue. Thereby, an elevator can be used effectively as a means to evacuate from the building 2 after an earthquake occurs.

(Second Embodiment)
A second embodiment of the present invention will be described with reference to FIG. In addition, the same code | symbol is attached | subjected to the same component as the component demonstrated in 1st Embodiment, and the overlapping description is abbreviate | omitted.

  The basic configuration of the second embodiment is the same as that of the first embodiment. The difference from the first embodiment is that the first elevator car 4 and the second elevator car 6 are different. Is installed in the same elevator hoistway 32. The first hoisting machine 10 is installed in a machine room 33 provided in the upper part of the elevator hoistway 32, and the second hoisting machine 16 is installed in a machine room 34 provided in the middle of the elevator hoistway 32. Yes. The second hoisting machine 16 is installed at a position where the main rope 19 driven by the second hoisting machine 16 is not affected by the horizontal movement by the seismic isolation device 1.

  In such a configuration, the first elevator car 4 can be operated on the upper floor from the seismic isolation device 1 and the second elevator car 6 can be operated on the lower floor from the seismic isolation device 1 during the emergency rescue operation. be able to. As a result, even when the building 2 is largely displaced in the horizontal direction at the position of the seismic isolation device 1, the elevator operation can be continued separately on the upper floor and the lower floor of the seismic isolation device 1, and the building after the earthquake occurs. The elevator can be used effectively as a means for evacuating from 2.

1 is a schematic diagram showing an overall configuration of an elevator system according to a first embodiment of the present invention. It is a block diagram which shows an elevator system. It is a flowchart which shows the control content of the elevator system at the time of the occurrence of an earthquake. It is the schematic which shows the whole structure of the elevator system which concerns on the 2nd Embodiment of this invention.

Explanation of symbols

1 seismic isolation device 2 building 3 first elevator hoistway 4 first elevator car 5 second elevator hoistway 6 second elevator car 7 third elevator hoistway 8 third elevator car 10 first hoist 16 2 hoisting machine 32 elevator hoistway

Claims (4)

A first hoisting machine installed above the seismic isolator of a building having a seismic isolator in the middle layer, and a first elevator that is moved up and down by the first hoisting machine and operated on the upper floor from the seismic isolator The car,
A second hoisting machine installed below the seismic isolation device of the building and a second elevator car that is moved up and down by the second hoisting machine and operated on a lower floor than the seismic isolation device;
An elevator system comprising:   The elevator system according to claim 1, wherein the first elevator car and the second elevator car are installed in different elevator hoistways.   The elevator system according to claim 1, wherein the first elevator car and the second elevator car are installed in the same elevator hoistway. The elevator system according to any one of claims 1 to 3, further comprising a notification unit that notifies a usable elevator.

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