JP7375503B2 - elevator power supply - Google Patents

Description

The present invention relates to an elevator power supply device.

Patent Document 1 discloses an example of an elevator. In an elevator, a plurality of car-side devices are provided in a car. The plurality of car side devices include a cooler, a lighting device, and a door machine. Electric power for operating each of the plurality of car-side devices is collectively transmitted from the machine room via the power supply cable.

Japanese Patent Application Publication No. 6-135645

BACKGROUND ART Elevators are sometimes provided with a cutoff section that cuts off power transmission through a power supply cable in order to protect car-side devices. Car-side equipment devices operated by the type of power transmitted by the power supply cable are protected by the operation of the interrupter. On the other hand, the plurality of car-side devices may include car-side devices that operate using different types of power extracted from the type of power transmitted by the power supply cable. At this time, even if the cutoff section operates, it may be necessary for the car-side device to continue operating. In this case, when the cutoff section is applied to the elevator of Patent Document 1, the cutoff section cuts off the supply of power to all of the plurality of car side devices. Therefore, some of the car-side devices cannot continue to operate.

The present invention was made to solve these problems. An object of the present invention is to provide a power supply device that can both reduce wiring of power supply cables and continue operation of some car side devices even in elevators equipped with a cutoff section that interrupts power transmission through power supply cables. It is to be.

The elevator power supply device according to the present invention includes an elevator control device to which a first type of power is supplied from an external power supply, and a power supply cable provided between an elevator car that transmits a first type of power to a power receiving unit of the car. A car-side first wiring that transmits electric power to a first device operated by a first type of electric power among a plurality of car-side devices provided in the car, and a car-side first wiring that is provided in the car-side first wiring and that is transmitted to a power supply cable. a car-side opening/closing part that cuts off the first type of power transmitted to the first device by opening when the cut-off part of the control device cuts off the first type of power transmitted to the first device; A second type of electric power, which is connected between the power receiving part and the car-side opening/closing part in one wiring, and which operates with the second type of electric power of the plurality of car-side devices, receives the second type of electric power taken out from the first type of electric power. The second wiring on the car side that transmits to the device and the first type of power extracted from the first type of power are provided in the control device and are closed when the cutoff unit cuts off the first type of power transmitted to the power supply cable. The present invention includes a bypass opening/closing section that connects bypass wiring that transmits two types of power to the power supply cable by bypassing the cutoff section.

With the power supply device according to the present invention, even in elevators that are equipped with a cutoff section that cuts off power transmission through the power supply cable, it is possible to both reduce wiring of the power supply cable and continue operation of some car side devices. .

1 is a configuration diagram of an elevator according to Embodiment 1. FIG. 1 is a configuration diagram of a power supply device according to Embodiment 1. FIG. 1 is a functional block diagram of a power supply device according to Embodiment 1. FIG. 1 is a functional block diagram of a power supply device according to Embodiment 1. FIG.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Modes for carrying out the present invention will be described with reference to the accompanying drawings. In each figure, the same or corresponding parts are given the same reference numerals, and overlapping explanations are simplified or omitted as appropriate.

Embodiment 1.
FIG. 1 is a configuration diagram of an elevator according to the first embodiment.

The elevator 1 in FIG. 1 is applied to a building having multiple floors. A landing 2 is provided on each of the plurality of floors of the building. In a building, a hoistway 3 is provided over multiple floors. The elevator 1 includes a hoist 4, a main rope 5, a car 6, and a counterweight 7.

The hoist 4 is provided, for example, at the upper or lower part of the hoistway 3. The hoist 4 has a sheave 8 and a main motor 9. Sheave 8 is connected to the rotating shaft of main motor 9. The main motor 9 is a device that generates driving force to rotate the sheave 8. The main rope 5 is wound around the sheave 8. The car 6 and the counterweight 7 are suspended by a main rope 5 in the hoistway 3. The car 6 is a device that transports passengers and the like between a plurality of floors by running vertically inside the hoistway 3. The counterweight 7 is a device that balances the load applied to the sheave 8 through the main rope 5 with the car 6. The car 6 and the counterweight 7 travel in opposite directions in the hoistway 3 as the main rope 5 moves due to the rotation of the sheave 8 .

The car 6 includes a plurality of car side devices 10. The plurality of car side devices 10 include, for example, a lighting device, an air pressure control device, a display device, an operation panel, and the like. Each of the plurality of car-side devices 10 is a device that operates by receiving power supply. The lighting device is, for example, an LED lighting device (LED: Light Emitting Diode). In this example, the LED lighting device operates with 200V single-phase AC power.

The control device 11 of the elevator 1 is arranged, for example, at the upper or lower part of the hoistway 3. Alternatively, if a machine room is provided in the elevator 1 above the hoistway 3 or the like, the control device 11 may be placed in the machine room. The control device 11 is provided so as not to move with respect to the hoistway 3. The control device 11 is a device that controls the operation of the elevator 1. The operation of the elevator 1 includes, for example, the running of the car 6. The control device 11 receives power from an external power source 12 . The external power source 12 is, for example, a commercial power source. The external power supply 12 supplies three-phase AC power. The voltage of the external power supply 12 is, for example, 200V. Three-phase AC power is an example of the first type of power. The first type of power is, for example, power for motive power.

The elevator 1 includes a power supply device 13. The power supply device 13 is a device that supplies power to each of the plurality of car side devices 10. The power supply device 13 includes a power supply side device 14, a load side device 15, and a power supply cable 16.

The power source device 14 is connected to the external power source 12 . The power supply side device 14 is provided in the control device 11 .

The load-side device 15 is connected to each of the plurality of car-side devices 10. The load-side device 15 is provided in the car 6. In this example, the load-side device 15 is placed at the top of the car 6. The load-side device 15 includes a power receiving section 17 . The power receiving unit 17 is a part that receives power supply.

The power supply cable 16 connects between the power supply side device 14 and the load side device 15. The power supply cable 16 is connected to the power receiving section 17 of the load-side device 15 . In this example, the power supply cable 16 is a cable that includes wiring for transmitting three-phase AC power. The power supply cable 16 includes an intermediate connection portion 18, a fixed cable 19, and a traveling cable 20. The intermediate connection portion 18 is fixed to the wall surface of the hoistway 3. In this example, the intermediate connection portion 18 is arranged at the center of the hoistway 3 in the vertical direction. The intermediate connection portion 18 is a portion that connects the fixed cable 19 and the traveling cable 20. The fixed cable 19 is a cable that does not move with respect to the hoistway 3. Fixed cable 19 connects between power supply side device 14 and intermediate connection section 18 . The traveling cable 20 is a cable that moves along the hoistway 3 as the car 6 travels. Traveling cable 20 connects between load-side device 15 and intermediate connection section 18 .

In this example, the power supply cable 16 includes a plurality of communication lines that communicate control signals for each of the plurality of car side devices 10. Each of the plurality of communication lines is an example of a communication path for each of the plurality of car side devices 10. Note that each communication path of the plurality of car side devices 10 may be a communication path of wireless communication. In this example, the car side device 10 does not include the power source side device 14 and the load side device 15. In this example, the power supply cable 16 does not include any wiring for feeding power other than the wiring for feeding three-phase AC power from the external power source 12. In this example, the power supply cable 16 does not include wiring for communicating signals other than communication lines for communicating control signals of each of the plurality of car side devices 10.

FIG. 2 is a configuration diagram of the power supply device according to the first embodiment.

The power supply side device 14 includes a power supply side three-phase wiring 21, a cutoff section 22, a bypass wiring 23, and a bypass opening/closing section 24.

The power supply side three-phase wiring 21 is wiring that connects the external power supply 12 and the power supply cable 16. The power supply side three-phase wiring 21 transmits three-phase AC power. The power supply side three-phase wiring 21 is, for example, three-phase, three-wire wiring.

The cutoff section 22 is provided in the power supply side three-phase wiring 21. The cutoff unit 22 cuts off all three phases of the three-phase alternating current when a cutoff signal is input. The cutoff section 22 includes a relay that is closed during normal operation of the elevator 1, for example, and that opens when a cutoff signal is input.

Bypass wiring 23 is wiring that detours around cutoff section 22 . The bypass wiring 23 transmits single-phase AC power extracted from two phases of the three phases of the three-phase AC transmitted by the power supply side three-phase wiring 21. The bypass wiring 23 is, for example, a single-phase two-wire wiring. Single-phase AC power is an example of the second type of power. The second type of power is, for example, power for lighting.

The bypass opening/closing section 24 is provided in the bypass wiring 23. The bypass opening/closing section 24 is interlocked with the blocking section 22 . The bypass opening/closing section 24 connects the bypass wiring 23 by closing when the interrupting section 22 interrupts the three-phase alternating current. The bypass opening/closing section 24 is open during normal operation of the elevator 1. The bypass opening/closing section 24 includes, for example, a relay. In this example, the relay of the bypass opening/closing unit 24 is maintained in an open state by a coil connected to at least one of the three phases of the three-phase alternating current transmitted by the three-phase wiring 21 on the power supply side. At this time, the relay is closed by cutting off the phase to which the coil is connected.

The power supply cable 16 is connected to the power supply side three-phase wiring 21. The power supply cable 16 has, for example, three-phase, three-wire wiring. The power supply cable 16 is connected to the power receiving section 17 of the load-side device 15 .

The load-side device 15 includes a car-side three-phase wiring 25, a car-side opening/closing section 26, a first car-side single-phase wiring 27, a second car-side single-phase wiring 28, and a control opening/closing section 29.

The car-side three-phase wiring 25 is connected to the power supply cable 16 at the power receiving section 17 . The car-side three-phase wiring 25 is wiring that connects the power supply cable 16 and the car-side device 10a. The car-side three-phase wiring 25 transmits three-phase AC power. The car-side three-phase wiring 25 is an example of the car-side first wiring. The car-side three-phase wiring 25 is, for example, three-phase, three-wire wiring. The car side device 10a is a car side device 10 that operates using three-phase AC power. The car side device 10a is, for example, an air pressure control device. The car-side device 10a is an example of a first device.

The car side opening/closing part 26 is provided in the car side three-phase wiring 25. The car side opening/closing section 26 is interlocked with the blocking section 22 . The car-side opening/closing part 26 opens when the cut-off part 22 cuts off the three-phase alternating current, thereby cutting off the car-side three-phase wiring 25. The car side opening/closing part 26 is closed during normal operation of the elevator 1. The car side opening/closing section 26 includes, for example, a relay. In this example, the relay of the car-side opening/closing unit 26 is maintained in a closed state by a coil connected to at least one of the three phases of the three-phase alternating current transmitted by the car-side three-phase wiring 25. At this time, the relay opens when the phase to which the coil is connected is cut off.

The first car-side single-phase wiring 27 is wiring that connects the car-side three-phase wiring 25 and the car-side device 10b. The first car-side single-phase wiring 27 is connected between the car-side opening/closing section 26 and the car-side device 10a. The first car-side single-phase wiring 27 transmits single-phase AC power extracted from two phases of the three phases of the three-phase AC transmitted by the car-side three-phase wiring 25. The first car side single-phase wiring 27 is, for example, single-phase two-wire wiring. The first car-side single-phase wiring 27 is a car-side single-phase wiring. The car-side device 10b is a car-side device 10 that operates using single-phase AC power.

The second car-side single-phase wiring 28 is wiring that connects the car-side three-phase wiring 25 and the car-side device 10c. The second car-side single-phase wiring 28 transmits single-phase AC power extracted from two phases of the three phases of the three-phase AC transmitted by the car-side three-phase wiring 25. The second car side single-phase wiring 28 is, for example, single-phase two-wire wiring. The second car-side single-phase wiring 28 is a car-side single-phase wiring. The second car-side single-phase wiring 28 is an example of the second car-side wiring. The two phases to which the second car side single-phase wiring 28 is connected are the same as the two phases to which the bypass wiring 23 is connected. The car side device 10c is a car side device 10 that operates using single-phase AC power. The car side device 10c is, for example, a lighting device. The car side device 10c is an example of a second device.

The control opening/closing section 29 is provided in the second car side single-phase wiring 28. The control opening/closing unit 29 opens and closes the second car side single-phase wiring 28 when a control signal is input. The control signal includes an open signal and a close signal. The control opening/closing section 29 is closed during normal operation of the elevator 1. The control opening/closing section 29 includes, for example, a relay. The control signal input to the control opening/closing section 29 is output from, for example, one of the plurality of car side devices 10.

FIG. 3 is a functional block diagram of the power supply device according to the first embodiment.

In the elevator 1, a safety circuit 30 is provided. The safety circuit 30 is a circuit that outputs an error signal when detecting an abnormality that affects the operation of the elevator 1. The safety circuit 30 is, for example, an overcurrent protection circuit. The error signal is a signal representing an abnormality that has occurred.

The hoist 4 has a drive section 31. Drive unit 31 includes, for example, a converter and an inverter. The drive unit 31 is a part that outputs electric power to drive the main motor 9. The drive unit 31 receives power input from the control device 11 . Parts of the hoisting machine 4, such as the drive unit 31 and the main motor 9, output an error signal when an abnormality occurs.

The control device 11 includes a main control section 32 . The main control unit 32 is a part that controls the overall operation of the elevator 1. The main control section 32 is connected to the safety circuit 30, the drive section 31, the main motor 9, etc. so as to be able to receive an input of an error signal. The main control unit 32 outputs a circuit break command when an error signal is input.

The power supply device 13 includes an opening/closing control section 33. The opening/closing control section 33 is provided in the control device 11. The opening/closing control section 33 is a section that controls power supply to the car 6. The opening/closing control section 33 is connected to the main control section 32 so as to be able to receive input of a circuit break command. The opening/closing control section 33 is connected to the interrupting section 22 so as to be able to output a interrupting signal when a circuit interrupting command is input.

Continuing with reference to FIG. 3, an example of the operation of the power supply device 13 during normal operation of the elevator 1 will be described.

During normal operation, the cutoff section 22 does not cut off three-phase alternating current. The car-side opening/closing section 26 and the control opening/closing section 29 are closed. Bypass opening/closing section 24 is open.

At this time, the power supply side three-phase wiring 21 transmits three-phase AC power from the external power supply 12 to the power supply cable 16. The power supply cable 16 transmits three-phase AC power to the load-side device 15. The power receiving unit 17 of the load-side device 15 receives three-phase AC power from the power supply cable 16. The car-side three-phase wiring 25 transmits three-phase AC power to the car-side device 10a. The car-side device 10a operates by being supplied with three-phase AC power. The first car-side single-phase wiring 27 transmits single-phase AC power extracted from the three-phase AC to the car-side device 10b. The car-side device 10b operates by being supplied with single-phase AC power. The second car-side single-phase wiring 28 transmits single-phase AC power extracted from the three-phase AC to the car-side device 10c, which is, for example, a lighting device. The car-side device 10c operates by being supplied with single-phase AC power.

During normal operation of the elevator 1, there are times when the car 6 is not occupied by a user. At this time, the operation mode of the elevator 1 may be shifted to the rest mode. The fact that no user is riding in the car 6 may be detected by a user detection device (not shown) having, for example, a human sensor or a camera. The user detection device is an example of the car side device 10. When no user is riding in the car 6, the user detection device outputs an open signal to the control opening/closing unit 29. The control opening/closing section 29 interrupts the second car side single-phase wiring 28. As a result, the supply of power to the car side device 10c is cut off. When the car-side device 10c is a lighting device, the lighting device is turned off. Further, when a user gets on the car 6, the user detection device outputs a close signal to the control opening/closing unit 29. As a result, the supply of power to the car side device 10c is restarted. When the car-side device 10c is a lighting device, the lighting device lights up.

Next, an example of the operation of the power supply device 13 when an abnormality occurs in the elevator 1 will be explained using FIG. 4.
FIG. 4 is a functional block diagram of the power supply device according to the first embodiment.

When an abnormality occurs, an error signal is output from the safety circuit 30, the drive section 31, the main motor 9, etc. to the main control section 32. The main control unit 32 to which the error signal has been input outputs a circuit break command to the opening/closing control unit 33. The opening/closing control section 33 to which the circuit interruption command has been input outputs a interruption signal to the interruption section 22 .

The cutoff unit 22 cuts off the power supply side three-phase wiring 21 when a cutoff signal is input. When the power supply side three-phase wiring 21 is cut off, the bypass opening/closing section 24 is closed in conjunction with the cutoff section 22. At this time, the bypass wiring 23 that bypasses the cutoff section 22 transmits single-phase AC power extracted from the three-phase AC power. Single-phase alternating current for lighting is transmitted to the power supply cable 16 by bypass wiring 23 . The power supply cable 16 transmits single-phase AC power to the load-side device 15. At this time, the power supply cable 16 does not transmit one phase of the three-phase alternating current of the external power supply 12.

The power receiving unit 17 of the load-side device 15 receives single-phase AC lighting power from the power supply cable 16 . At this time, one phase of the car side three-phase wiring 25 is cut off. Therefore, the car-side opening/closing section 26 opens when the one phase is interrupted. That is, the car side opening/closing section 26 opens in conjunction with the blocking section 22.

The car-side opening/closing section 26 cuts off the power transmitted to the car-side device 10a. Further, the first car-side single-phase wiring 27 is connected between the car-side opening/closing section 26 and the car-side device 10b. Therefore, the power transmitted to the car side device 10b is cut off. On the other hand, the second car-side single-phase wiring 28 is connected between the power receiving section 17 and the car-side opening/closing section 26. Therefore, the single-phase AC power transmitted to the second car-side single-phase wiring 28 is not interrupted by the car-side switching section 26. The second car-side single-phase wiring 28 transmits single-phase AC power to the car-side device 10c, which is, for example, a lighting device. The car-side device 10c operates by being supplied with single-phase AC power. In this way, even when the three-phase alternating current transmitted to the power supply cable 16 is cut off by the cutoff section 22, the car side device 10c can receive the supply of single-phase alternating current power. In particular, when the car-side device 10c is a lighting device, the lighting of the lighting device of the car 6 in which the user is riding is maintained.

As described above, the power supply device 13 according to the first embodiment includes the car-side three-phase wiring 25, the car-side opening/closing section 26, the second car-side single-phase wiring 28, the bypass opening/closing section 24, Equipped with The car-side three-phase wiring 25 transmits the three-phase AC power that the power supply cable 16 transmits to the power receiving section 17 of the car 6 to the first device. Power supply cable 16 is provided between control device 11 and car 6. The control device 11 is a device to which three-phase AC power is supplied from an external power source 12. The first device is one of the plurality of car-side devices 10 provided in the car 6 that operates using three-phase AC power. The car side opening/closing part 26 is provided in the car side three-phase wiring 25. When the cutoff section 22 of the control device 11 cuts off the three phases of the three-phase alternating current transmitted to the power supply cable 16, the car side opening/closing section 26 opens. Thereby, the car-side opening/closing section 26 cuts off the three phases of the three-phase alternating current transmitted to the first device. The cutoff section 22 cuts off the three-phase alternating current in response to input of a cutoff signal. The second car-side single-phase wiring 28 is connected between the power receiving section 17 and the car-side opening/closing section 26 in the car-side three-phase wiring 25 . The second car-side single-phase wiring 28 transmits single-phase AC power extracted from two phases of the three-phase AC to the second device. The second device is one of the plurality of car-side devices 10 that operates using single-phase alternating current. The bypass opening/closing section 24 is provided in the control device 11 . When the cutoff section 22 cuts off the three phases of the three-phase alternating current transmitted to the power supply cable 16, the bypass opening/closing section 24 closes. Thereby, the bypass opening/closing section 24 connects the bypass wiring 23. The bypass wiring 23 transmits single-phase AC power to the power supply cable 16 by bypassing the cutoff section 22 . The single-phase alternating current transmitted by the bypass wiring 23 is taken out from the two-phase from which the single-phase alternating current transmitted by the second car-side single-phase wiring 28 is taken out.

The power supply cable 16 supplies power to both the first device operating on three-phase alternating current and the second device operating on single-phase alternating current through common wiring. Therefore, the power supply cable 16 does not require dedicated wiring for transmitting single-phase alternating current. That is, the power supply cable 16 does not require any wiring for feeding power in addition to the wiring for feeding three-phase AC motive power. Therefore, the number of wires in the power supply cable 16 can be reduced. Further, when the cutoff section 22 cuts off the three-phase alternating current, the bypass wiring 23 transmits the single-phase alternating current extracted from the three-phase alternating current to the power supply cable 16 . The power supply cable 16 transmits single-phase alternating current. Therefore, the operation of the second device continues. Furthermore, the car-side opening/closing section 26 blocks the three-phase alternating current transmitted to the first device. Therefore, the third device is protected. In this way, the power supply device 13 can reduce the wiring of the power supply cable 16 and allow some of the car-side devices 10 to continue operating, even in the elevator 1 equipped with the cutoff section 22 that interrupts power transmission through the power supply cable 16. , can be achieved at the same time. In particular, when the second device is a lighting device, even when the three-phase AC power is cut off, the lighting device of the car 6 in which the user is riding is maintained. Therefore, it is difficult to cause discomfort to the user. Further, when the single-phase AC voltage on which the lighting device operates is equivalent to the three-phase AC voltage, the lighting device does not require voltage conversion. This simplifies the configuration of the load-side device 15.

Further, the power supply device 13 includes an opening/closing control section 33 . The opening/closing control section 33 outputs a cutoff signal to the cutoff section 22 when an abnormality in power supply occurs. Thereby, when an abnormality occurs, the three-phase alternating current transmitted to the first device is cut off. Therefore, the first device is protected from abnormalities such as power supply.

Further, the car-side opening/closing section 26 opens when at least one of the three phases of the three-phase alternating current transmitted by the car-side three-phase wiring 25 is interrupted. Thereby, the car-side opening/closing section 26 is interlocked with the cutoff section 22 without requiring a communication line for inputting a control signal to the car-side opening/closing section 26. Therefore, the number of wires for the power supply cable 16 does not increase.

Further, the bypass opening/closing section 24 is closed when at least one of the three phases of the three-phase alternating current transmitted in the control device 11 is cut off. Thereby, the bypass opening/closing section 24 is interlocked with the blocking section 22 without depending on the input of a control signal such as a closing signal. Therefore, the power transmitted to the power supply cable 16 is switched from three-phase AC to single-phase AC in conjunction with the interruption of the interruption unit 22.

The power supply device 13 also includes a control opening/closing section 29 . The control opening/closing section 29 is provided in the second car side single-phase wiring 28. The control opening/closing section 29 opens and closes when a control signal is input from any one of the plurality of car side devices 10. Thereby, the car-side device 10 can stop the operation of the second device, such as the lighting device, when the elevator 1 is in the rest mode, for example.

Note that, when outputting the cutoff signal, the opening/closing control section 33 may output an opening signal to the car-side opening/closing section 26 through a communication path that communicates the control signal to any of the plurality of car-side devices 10. The car-side device 10 may ignore the open signal input from the communication path. The car-side opening/closing unit 26 may ignore control signals of the car-side device 10 other than the open signal input from the communication path. The open signal input to the car side opening/closing section 26 is output only once when the cutoff section 22 operates. Therefore, the operation of the car side device 10 is hardly hindered by the open signal. Further, the car side opening/closing section 26 opens in conjunction with the blocking section 22 without requiring a dedicated communication line for inputting a control signal to the car side opening/closing section 26. Therefore, the number of wires for the power supply cable 16 does not increase.

Further, when outputting a cutoff signal, the opening/closing control section 33 transmits a control signal that causes the car side opening/closing section 26 to output an opening signal through a communication path that communicates the control signal to any of the plurality of car side devices 10. It may also be transmitted to the car side device 10. The open signal input to the car side opening/closing section 26 is output only once when the cutoff section 22 operates. Therefore, the operation of the car side device 10 is hardly hindered by the open signal. Further, the car side opening/closing section 26 does not require a signal processing circuit for discriminating an open signal and a control signal other than the open signal. Further, the car side opening/closing section 26 opens in conjunction with the blocking section 22 without requiring a dedicated communication line for inputting a control signal to the car side opening/closing section 26. Therefore, the number of wires for the power supply cable 16 does not increase.

Moreover, the opening/closing control section 33 may close the bypass opening/closing section 24 by outputting a closing signal to the bypass opening/closing section 24 when outputting the cutoff signal. The opening signal of the bypass opening/closing section 24 may be a signal common to the cutoff signal. Therefore, the power transmitted to the power supply cable 16 can be easily switched from three-phase AC to single-phase AC under the control of the switching control section 33.

Further, the power supply device 13 does not need to include the control opening/closing section 29. Further, the cutoff section 22 may directly receive a cutoff signal from the main control section 32 or another device.

Further, the power supply cable 16 may be the traveling cable 20 itself that connects the control device 11 and the car 6.

1 elevator, 2 landing, 3 hoistway, 4 hoisting machine, 5 main rope, 6 car, 7 counterweight, 8 sheave, 9 main motor, 10, 10a, 10b, 10c car side device, 11 control device, 12 external power supply, 13 power supply device, 14 power supply side equipment, 15 load side equipment, 16 power supply cable, 17 power receiving section, 18 intermediate connection section, 19 fixed cable, 20 traveling cable, 21 power supply side three-phase wiring, 22 cutoff section, 23 Bypass wiring, 24 Bypass opening/closing part, 25 Car side three-phase wiring, 26 Car side opening/closing part, 27 First car side single phase wiring, 28 Second car side single phase wiring, 29 Control switching part, 30 Safety circuit, 31 Drive unit, 32 Main control unit, 33 Opening/closing control unit

Claims (9)

A power supply cable provided between an elevator control device to which the first type of power is supplied from an external power supply and the elevator car transmits the first type of power to a power receiving unit of the car, a car-side first wiring for transmitting data to a first device of the car-side devices that operates using the first type of electric power;
The first type of power, which is provided in the first wiring on the car side and is transmitted to the power supply cable, is transmitted to the first device by opening when a cutoff section of the control device cuts off the power by inputting a cutoff signal. a car-side opening/closing part that cuts off the first type of power that is generated;
The car-side first wiring is connected between the power receiving unit and the car-side opening/closing unit, and the second type of power extracted from the first type of power is transmitted to the car-side device of the plurality of car-side devices. a second car-side wiring for transmitting data to a second device operated by two types of electric power;
The second type of power extracted from the first type of power is provided in the control device and closed when the cutoff unit cuts off the first type of power transmitted to the power supply cable. a bypass opening/closing section that connects bypass wiring that bypasses the cutoff section and transmits data to the power supply cable;
Elevator power supply equipment equipped with. The car-side first wiring transmits three-phase AC power as the first type of power,
The car-side opening/closing section opens when the cutoff section cuts off three phases of three-phase alternating current, which is the first type of power transmitted to the power supply cable, so that the first type of power is transmitted to the first device. Cut off the three phases of the three-phase alternating current that is transmitted as electric power,
The car-side second wiring transmits single-phase AC power extracted from two phases of the three-phase AC, which is the first type of power, to the second device as the second type of power,
The bypass opening/closing section closes when the cutoff section cuts off the three phases of the three-phase alternating current that is the first type of power transmitted to the power supply cable, thereby shutting off the three-phase AC that is the first type of power. The elevator power supply device according to claim 1, wherein the bypass wiring for transmitting single-phase AC power, which is the second type of power extracted from the two-phase AC power, to the power supply cable is connected. The elevator power supply device according to claim 1 or 2, further comprising an opening/closing control section that outputs a cutoff signal to the cutoff section when an abnormality occurs. The elevator power supply device according to any one of claims 1 to 3, wherein the car side opening/closing part opens when the first type of power transmitted by the car side first wiring is cut off. The power supply device for an elevator according to any one of claims 1 to 4, wherein the bypass opening/closing section is closed when the first type of power transmitted in the control device is cut off. 3. The opening/closing control section, when outputting the cutoff signal, opens the car side opening/closing section by outputting an open signal through a communication path that communicates a control signal to any of the plurality of car side devices. The elevator power supply device described in . When outputting the cutoff signal, the opening/closing control section transmits a control signal to the car side opening/closing section to output an opening signal to the car through a communication path that communicates the control signal to any of the plurality of car side devices. The elevator power supply device according to claim 3, wherein the power supply device transmits to a side device. The elevator according to claim 3, wherein the opening/closing control section closes the bypass opening/closing section by outputting a closing signal when outputting the cutoff signal. Power supply device. 9. The control opening/closing section according to claim 1, further comprising a control opening/closing section that is provided in the second car side wiring and opens and closes when a control signal is input from any of the plurality of car side devices. Elevator power supply.

Images