JP2007254096A - Elevator device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide elevator control devices equipped with an automatic landing device at the time of power failure, while suppressing costs. <P>SOLUTION: The automatic landing device 10 at the time of power failure common to a plurality of elevators, such as an elevator A and an elevator B, is provided, and as batteries for an emergency electric power source, two systems, systems C and D, are equipped. A system C battery 12 is installed in the automatic landing device 10 at the time of blackout, and system D batteries 25A, 25B are individually installed in a system A elevator control device 2A and a system B elevator control device 2B, respectively. The battery in one system is used for a power source of an operation control part and an indicating lamp at the time of blackout which are continuously required at the time of blackout, and the battery in the other system is used for a power source for elevator operation. This configuration suppresses increase in the size of the automatic landing device 10 at the time of power failure. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an elevator apparatus having an automatic landing function during a power failure, and more particularly to an elevator apparatus including a plurality of elevator numbers.

  Elevators are equipped with various security equipment, but one type is an automatic landing device in the event of a power failure, which is equipped with a battery for power supply, and the energy source of the elevator when commercial power is lost during a power failure. When there is a car that has been stopped in a zone where it is impossible to open and close the door, it is moved to the light load direction and automatically landed on the nearest floor. Yes (see, for example, Patent Document 1).

This automatic landing device at the time of power failure has been widely used conventionally, but at this time, in the prior art, it is customary to provide an automatic landing device at the time of power failure for each elevator device. When there were multiple elevators, there were also multiple automatic landing devices during power outages.
JP 7-252049 A

  The above-mentioned prior art cannot be said to give consideration to the space required for installation of the automatic landing device at the time of a power failure, and has a problem in suppressing the installation cost and maintenance cost of the elevator.

  In the conventional technology, when there are multiple elevators, an automatic landing device at the time of power failure is required for each elevator. Therefore, when multiple elevator control devices are installed in the same machine room, automatic operation at the time of power failure is performed in a narrow machine room. It is difficult to secure the installation space for the landing device, and the number of batteries is increased by the number of elevators. Therefore, time and cost are increased for construction and maintenance.

  At this time, since it is inevitable that the device will be enlarged only by putting the battery in one place, the degree of freedom of installation of the current device is impaired, and in this case, charging of the battery The problem that a great deal of time is spent is derived.

  The present invention has been made to solve this problem, and an object of the present invention is to provide an elevator control device capable of achieving both the equipment of an automatic landing device during a power failure and cost reduction.

  The object is to provide an elevator apparatus having at least two elevators and equipped with an automatic flooring device at the time of a power failure by a battery power supply, and providing one automatic powering device at the time of a power failure shared by the at least two elevators. The battery that is shared by the at least two elevators as a power source for automatic landing operation at the time of power failure is installed in the one automatic landing device at the time of power failure, and the automatic landing operation at the time of power failure by the at least two elevators. The battery used individually as a power source for the vehicle is achieved by installing it in each elevator control device.

  At this time, a battery charging device that uses the regenerative current of the elevator as a power source may be provided, and a battery installed in the automatic landing device during a power failure may be charged by the regenerative current of the elevator. One may be used as a drive power source for an electromagnetically open brake of an elevator drive device.

  Further, the elevator control device is provided with means for detecting the presence or absence of passengers in the elevator car, and when there is no passenger in the elevator car, the elevator car is moved in the light load direction for regenerative operation. Similarly, the elevator speed during the automatic landing operation at the time of power outage may be controlled according to the remaining amount of the battery, and there is no passenger in the car at this time. In such a case, it is possible not to perform an indicator light or an announcement for passengers in the car.

  Therefore, the automatic landing device at the time of a power failure of a plurality of elevators according to the present invention includes two systems of batteries, one of which is a power source for an operation control unit and a power failure indicator lamp that are always required at the time of a power failure, and the other is an elevator drive device. As a power source, one of the two systems of batteries is shared by a plurality of elevators, and the other is installed in the elevator controller. Moreover, the automatic landing device at the time of a power failure is provided with a device for charging a battery with a regenerative current during an elevator regenerative operation.

  According to the present invention, the battery serving as a power source at the time of a power failure is divided into two systems for each elevator, and one system battery is shared by a plurality of elevators. As a result, it is possible to reduce the size and weight of the automatic landing device during a power failure.

  In addition, in an elevator in which a battery for releasing the brake of the drive device is installed in the elevator control device, the battery for releasing the brake of the drive device is shared with one system of the battery power source at the time of power failure, so that the control device Space saving and cost reduction.

  Further, in the present invention, since the battery is charged with the regenerative current at the time of the regenerative operation of the elevator, the charging time of the battery can be shortened. Therefore, according to the present invention, for a plurality of elevators, As a result, the battery capacity can be saved and the automatic landing device can be downsized during a power failure, and the space in the machine room and hoistway can be saved and the workability can be improved.

  Hereinafter, the elevator apparatus by this invention is demonstrated in detail by embodiment of illustration.

Embodiment 1
FIG. 1 shows an embodiment in which the present invention is applied to a system including two elevators of No. 1 and No. 2, so that the same numerals in the figure indicate the same parts. At this time, the one with the suffix A is for Unit 1, the one with B is for Unit 2, and the numbers without anything are common to all elevators. Represent.

  In FIG. 1, 1A and 1B are commercial power sources, 2A and 2B are elevator control devices, 3A and 3B are elevator drive devices, 4A and 4B are ropes, 5A and 5B are counterweights, 6A and 6B are car control devices, and 7A. 7B is a car, and 8A and 8B are car load detection devices. The car control devices 6A and 6B receive detection data from the car load detection devices 8A and 8B and open / close the car doors. And control the indicator light.

  Next, reference numeral 10 denotes an automatic landing device at the time of a power failure. In the case of this embodiment, only one unit is provided in common with both the first and second elevators as shown in the figure. In this case, the battery charger 11 and the battery 12 are provided. At this time, the battery 12 is provided in common to each unit as described above. Call.

  Next, 21A and 21B are power failure detection units in the elevator control device, 22A and 22B are operation control units that control all movements of the elevator, 23A and 23B are motor control units including a converter and an inverter, and 24A and 24B are brakes. It is a control unit.

  Reference numerals 25A and 25B denote batteries, which are used as power sources for operating (opening) the electromagnetic release brakes 31A and 31B of the elevator driving devices 3A and 3B. ) Is provided. Therefore, it is called a D system battery here.

  Next, reference numerals 26A and 26B denote switching devices that function to switch the operation control unit and the power supply for the power failure indicator lamp that are always required from the commercial power source to the C-system battery 12 in the event of a power failure. 27A and 27B are also switching devices, which function to switch the power source of the electromagnetic open brakes 31A and 31B from the commercial power source to the D system batteries 25A and 25B when a power failure is detected.

  Here, the elevator driving devices 3A and 3B include elevator driving motors 32A and 32B and sheaves 33A and 33B in addition to the electromagnetic release brakes 31A and 31B described above, and are stretched over the sheaves 33A and 33B. The cars 7A and 7B are moved by the ropes 4A and 4B so that a service across the floors can be obtained.

  At this time, when the motors 32A and 32B are regeneratively controlled by the motor control units 23A and 23B, and the regenerative current is supplied to the battery charging device 11, the C system battery 12 is thereby charged. Therefore, the battery charging device 11 includes a rectifier and a filter for charging the battery with a regenerative current during the elevator regenerative operation.

  In this embodiment, the C system battery is used as a power source for an operation control unit and a power failure indicator light that are always required in the event of a power failure, and the D system battery is used as a drive power source. It is also possible to use the system battery as a power source for an operation control unit or a power failure indicator lamp.

  Next, the operation of the embodiment of FIG. 1 will be described. First, when power is normally supplied from the commercial power sources 1A and 1B, the three-phase AC power necessary for the operation of the elevator is supplied from the commercial power sources 1A and 1B, and the elevator operation control unit 22A. , 22B are configured to output commands necessary for elevator operation to the motor control units 23A, 23B, the brake control units 24A, 24B, and the car control units 6A, 6B.

  Therefore, as a result, the cars 7A and 7B and the counterweights 5A and 5B are controlled by the looseness and tightening control of the brakes 31A and 31B and the rotation and stop of the electric motors 32A and 32B. It moves up and down appropriately according to the hall call inside and operates to provide the requested service. At this time, the switching devices 26A and 26B for switching the C system battery and the switching devices 27A and 27B for switching the D system battery are both turned OFF.

  Thus, it is assumed that a power failure or voltage loss has occurred in the commercial power supplies 1A and 1B at a certain point in time while the elevator is operating as usual. Here, description will be made below with reference to the flowchart of FIG. Here, the processing step is represented by S.

  Then, this power failure or voltage loss is detected by the power failure detection units 21A and 21B in the elevator control devices 2A and 2B (S1), and as a result, the elevator is emergency stopped by the elevator operation control units 22A and 22B (S2). ).

  Thereafter, the switching devices 26A and 26B are controlled to be turned ON by detecting the power failure of the power failure detection units 21A and 21B (S3), whereby the C-system battery 12 in the automatic landing device 10 at the time of power failure is transferred via the switching devices 26A and 26B. Since it is supplied to the elevator operation control units 22A and 22B, the elevator operation control units 22A and 22B operate using this as a power source, and recognize that it is in a power outage state and switch to automatic landing operation during a power outage.

  Next, the presence / absence of passengers is detected by the in-car load detection devices 8A and 8B installed in the cars 7A and 7B (S4), and an indicator lamp that informs the car on which the passengers are on a power outage. And make an announcement (S5). On the other hand, no display or announcement is made for a car with no passengers.

  Thereafter, it is confirmed that each safety device is normal (S6). If the confirmation result is NO, that is, if the safety device is not normal, it is impossible to land on the nearest floor here (S7), and the maintenance staff is on standby for rescue (S8). However, during this time, as long as the power storage state of the C-system battery 12 continues, the indicator lamp is turned on so that the anxiety caused by the rescue waiting state is alleviated.

  On the other hand, when the confirmation result in S6 is YES, it is checked from the detection result of the car position whether or not the door can be opened and closed (S10). If it is within the possible range, the door is opened to wait (S11). After this, it is confirmed by the detection output of the load detection devices 8A and 8B that there are no passengers in the car (S12), then the door is closed (S13), and then the switching devices 26A, 26B for both the C system and the D system, 27A and 27B are turned off (S14), and the automatic landing operation at the time of power failure is completed only by returning to the commercial power source side.

  On the other hand, if the car is in a range in which the door cannot be opened, that is, if the confirmation result in S10 is NO, first, the switching devices 27A and 27B for the D system battery are turned on (S20), and the elevator The brakes 31A and 31B are controlled by the electric power of the D system batteries 25A and 25B according to the commands of the operation control units 22A and 22B (S21), and the motors 32A and 32B are similarly controlled by the electric power of the C system battery 12 (S22). Then, it is landed on the nearest floor (S23).

  At this time, in order to save battery capacity, the car is moved up and down in a direction in which the load applied to the motors 32A and 32B is light. At this time, the elevator speed at the time of automatic landing operation at the time of power failure may be controlled according to the remaining amount of the battery.

  Further, the regenerative current generated during the automatic landing operation to the nearest floor in S22 is supplied to the battery charger 11 (S24), and the C system battery 12 is charged (S25).

  After stopping at the nearest floor in S25, the process returns to S11, opens the door and waits. In S12, it is confirmed from the detection results of the load detection devices 8A and 8B that the passenger is not in the car, and then the door is closed in S13. In S14, the switching devices 26A, 26B, 27A, and 27B of both the A and B systems are turned off, and then switched to the commercial power circuit to complete the automatic landing operation during a power failure.

  As described above, in this embodiment, the C system battery 12 serving as the elevator control power source is provided in the automatic landing device 10 at the time of power failure, and the D system batteries 25A and 25B serving as the elevator drive power source include the plurality of elevator control devices 2A, Since it is installed every 2B, it is possible to automatically land each of the elevator cars 7A and 7B at the same time for a plurality of elevators. Therefore, a service equivalent to that of a conventional elevator is possible.

  In this way, when a common power-off automatic grounding device is installed in multiple elevators, in the conventional technology, all batteries are installed in the automatic power-off device during a power failure, so the battery that must be installed there Requires capacity for all elevators, which increases the capacity (number) of batteries and increases the size of the automatic landing device during a power failure.

  Therefore, in the embodiment shown in FIG. 1, the battery required for automatic landing operation at the time of power failure is constituted by two batteries of C system and D system. An increase in the capacity of the battery to be installed can be suppressed, and as a result, the automatic landing device during a power failure can be reduced in size.

  On the other hand, as shown in FIG. 1, in an elevator in which a battery for releasing the brake of the drive device is installed in the elevator control device, the cost of the control device is increased by sharing the battery with the drive power supply at the time of power failure. Can be suppressed.

Embodiment 2
By the way, in the case of this invention, the automatic landing device at the time of a power failure with a completely different characteristic can be obtained by switching the connection destination of the C system battery and the D system battery in the first embodiment. Therefore, a case where the C system battery is used as an elevator drive power source and the D system battery is used as an elevator control power source will be described below as a second embodiment.

  First, in the case of the second embodiment, in FIG. 1, the C system battery 12 is connected to the switching devices 27A and 27B, and the D system batteries 25A and 25B are connected to the switching devices 26A and 26B. Accordingly, at this time, the switching devices 26A and 26B are not a C system but a D system battery switching device, and the switching devices 27A and 27B are not a D system but a C system battery switching device.

  Next, the operation of the second embodiment will be described with reference to the flowchart of FIG. Here, in the flowchart of FIG. 3, the same S number is attached | subjected about the process step same as the case of the flowchart of FIG.

  Therefore, in FIG. 3, the process of S3 in FIG. 2 is replaced with the process of S33, the process of S25 is replaced with the process of S35, and the process of S36 is performed between the process of S5 and S6. The other points are the same except that the process is added and returned after the process of S35 and before the process of S36.

  Here, it is assumed that a power failure is detected during normal operation of the elevator (S1). Then, the elevator stops emergency (S2), and the switching device for the D system battery is turned ON (S33). As a result, the D system battery in the elevator control device is used for emergency via the switching device for the D system battery. The power is supplied to the elevator operation control unit.

  Therefore, the operation of the elevator operation control unit is continued, recognizing that it is in a power failure state, switching to automatic landing operation at the time of power failure, and detecting the presence or absence of passengers by a car load detection device installed in the car ( S4) An indicator lamp and announcement for notifying the power failure to the car in which passengers are present are made (S5). On the other hand, no display or announcement is made for a car with no passengers.

  After that, the elevator operation control unit checks the remaining amount of the C system battery, determines the order for automatic landing operation on the nearest floor from the load detection data in the car, and sequentially performs automatic landing operation according to the order. Is executed (S36). For example, it is assumed that the remaining capacity of the C-system battery is only a capacity to move a car for one car, and that there are passengers in two cars.

  In this case, in S36, power is supplied from the C system battery to the first elevator control device, and the car is automatically landed to the nearest floor, and the automatic landing to the nearest floor at this time is performed. The battery is charged by the regenerative current generated during operation, and the battery capacity necessary for starting the second unit is obtained.

  In this case, if there are three elevators and the remaining capacity of the C-system battery is only enough to move two cars, and there are passengers in the three cars In this case, in S36, power is supplied to the elevator control devices in sequence from the first battery to the second one from the C system battery, and then the car is automatically landed on the nearest floor sequentially. The battery is charged by the regenerative current generated during the automatic landing operation to the nearest floor at this time, and the battery capacity necessary for starting the third vehicle is obtained.

  At this time, in order to obtain regenerative power, the elevator is moved while the motor is in a light load without stopping at the nearest floor, that is, during the regenerative operation state, and the regenerative power obtained from this moves the battery. There is also a method of charging.

  Next, it is confirmed that each safety device is normal (S6). If the safety device is not normal, it is impossible to automatically land on the nearest floor (S7), and a state of waiting for rescue by maintenance personnel is entered (S7). During this time, the indicator lamp is kept on as long as the C system battery continues.

  On the other hand, in the case of YES in S6, the position of the next car is detected and it is confirmed that it is within a range where the door can be opened and closed (S10). If the door can be opened and closed, the door is opened (S11), the load detection device detects that there are no passengers in the car, and then the door is closed (S12, S13). For both C and D systems Is switched off and switched to the commercial power supply circuit (S14), and the automatic landing operation at the time of power failure is completed while the car is stopped.

  On the other hand, when the car is in a range where the door cannot be opened and closed in S10, the switching device for the C system battery is turned on (S30), and the brake is released and the motor is controlled by the command of the elevator operation control unit. Land on the nearest floor. The regenerative current generated at this time is supplied to the battery charger 11 (S24), and the D system battery is charged (S35).

  After stopping at the nearest floor in S25, the process returns to S11, opens the door and waits. In S12, it is confirmed from the detection results of the load detection devices 8A and 8B that the passenger is not in the car, and then the door is closed in S13. In S14, the switching devices 26A, 26B, 27A, and 27B of both the A and B systems are turned off, and then switched to the commercial power circuit to complete the automatic landing operation during a power failure.

Therefore, according to this Embodiment 2, the reliability with respect to the automatic landing operation at the time of a power failure is further improved, and the possibility that the nearest floor landing becomes impossible and the rescuer needs to be rescued. In the above embodiment, the case where there are two elevators has been described as an example. However, the present invention can be similarly applied even when there are three or more elevators. Is clear.

It is a block block diagram which shows one Embodiment of the elevator apparatus by this invention. It is a flowchart figure for demonstrating the automatic landing operation at the time of the power failure by Embodiment 1 of this invention. It is a flowchart figure for demonstrating the automatic landing operation at the time of the power failure by Embodiment 2 of this invention.

Explanation of symbols

1A, 1B: Commercial power supply (3-phase AC power supply)
2A, 2B: Elevator control device 3A, 3B: Elevator drive device 4A, 4B: Rope 5A, 5B: Counterweight 6A, 6B: Car control device 7A, 7B: Car 8A, 8B: Car load detection device 10: Power failure Automatic landing device 11: Battery charger 12: C system battery 21A, 21B: Power failure detection unit 22A, 22B: Elevator operation control unit,
23A, 23B: Motor control unit 24A, 24B: Brake control unit 25A, 25B: D system battery (for emergency power supply during power failure)
26A, 26B: Switching device (switching device for C system battery when power failure is detected)
27A, 27B: Switching device (switching device for D system battery when power failure is detected)
31A, 31B: Brake 32A, 32B: Electric motor 33A, 33B: Sheave

Claims (6)

In an elevator apparatus having at least two elevators and equipped with an automatic landing device at the time of power failure by battery power supply,
A power outage automatic flooring device shared by the at least two elevators is provided;
A battery shared as a power source for automatic landing operation at power failure by the at least two elevators is installed in the one automatic landing device at power failure,
A battery used individually as a power source for automatic landing operation at the time of a power failure in the at least two elevators is installed in a control device of each elevator. In the elevator apparatus according to claim 1,
A battery charging device that uses the regenerative current of the elevator as a power source is provided,
A battery installed in the automatic landing device at the time of a power failure is charged by a regenerative current of the elevator. In the elevator apparatus according to claim 1,
One of the said batteries is used as a drive power supply of the electromagnetic open type brake of an elevator drive device, The elevator device characterized by the above-mentioned. In the elevator apparatus according to claim 2,
The elevator control device comprises means for detecting the presence or absence of passengers in the elevator car,
An elevator apparatus characterized in that when there are no passengers in the elevator car, regenerative operation is performed by moving the car in the light load direction. In the elevator apparatus according to claim 1,
The elevator apparatus characterized by the elevator speed at the time of the automatic landing operation at the time of a power failure being controlled according to the remaining amount of the battery. In the elevator apparatus according to claim 1,
An elevator apparatus characterized in that no indicator light or announcement is given to passengers in the car when there are no passengers in the car.

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