JP2011116471A - Elevator apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an elevator apparatus suppressing an increase in car weight and driving electric power in a construction in which a noncontact electric power supply method is used for electric power supply to car equipment. <P>SOLUTION: One end of a junction cable 14 is connected to a power receiving unit 13. The other end of the junction cable 14 is connected to a terminal box 9 in a car 5. The power receiving unit 13 and the terminal box 9 are electrically connected to each other through the junction cable 14. The power receiving unit 13 is raised and lowered in a hoistway 1 as a counterweight 6 is raised and lowered, and is disposed adjacent to feeders 7A and 7B so as to permit electromagnetic coupling with the feeders 7A and 7B in the entire range of the risable and lowerable range thereof. The power receiving unit 13 receives electric power from the feeders 7A and 7B by the electromagnetic coupling, irrespective of the height position of the counterweight 6. The electric power received by the power receiving unit 13 is supplied to the car equipment 8 through the junction cable 14 and the terminal box 9. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an elevator apparatus using non-contact power supply / reception means as power supply means to a car device installed in a car.

  For example, in a conventional device as shown in Patent Document 1, a non-contact power feeding device is provided at a location corresponding to a stop floor in a hoistway, and a non-contact power receiving device is provided in a car. In this conventional apparatus, electric power is supplied to the car from the non-contact power feeding device via the non-contact power receiving device while the car is stopped on the stop floor.

  Further, for example, in the conventional device as shown in Patent Document 2, the non-contact power feeding device is provided at a location corresponding to the stop floor in the hoistway, and the non-contact power receiving device is provided on both the car and the counterweight. Yes. Also in this conventional apparatus, electric power is supplied to the car from the non-contact power feeding device via the non-contact power receiving device while the car is stopped on the stop floor.

JP-A-5-294568 Japanese Patent No. 3915414

  The conventional devices as shown in Patent Documents 1 and 2 have a configuration in which all power receiving system devices such as a non-contact power receiving device, a battery, an inverter, and a converter used for non-contact power feeding are mounted on a car. For this reason, there exists a problem that the weight of a car becomes large and the electric power required for an elevator drive becomes large.

  In the conventional device as shown in Patent Document 2, a driving device is provided in the counterweight, and the driving device is driven by the driving power received by the noncontact power receiving device of the counterweight from the noncontact power feeding device. The That is, the non-contact power receiving device provided on the counterweight of this conventional device is used only for supplying driving power to the driving device.

  The present invention has been made in order to solve the above-described problems, and an elevator capable of suppressing an increase in car weight and driving power in a configuration using a non-contact power feeding method for power supply to car equipment. The object is to obtain a device.

  An elevator apparatus according to the present invention is provided in a hoistway, and a car and a counterweight that are elevated in the hoistway, a main rope for suspending the car and the counterweight in the hoistway, A car device installed in a car, provided in the hoistway along the lifting and lowering direction of the counterweight, and disposed in the vicinity of a region where the counterweight is projected in the lifting and lowering direction And a power feeding unit electrically connected to an AC power source, and provided in the counterweight, which is raised and lowered in the hoistway as the counterweight is raised and lowered, and in the entire range of the liftable range. A power receiving unit that is arranged adjacent to the power feeding unit so as to be electromagnetically coupled to the power feeding unit, receives power from the power feeding unit by electromagnetic coupling, and connects the power receiving unit and the basket device, and power from the power receiving unit To the basket equipment In which further comprising a power transmission means.

  According to the elevator apparatus according to the present invention, the power receiving unit provided in the counterweight is arranged adjacent to the power feeding unit so as to be electromagnetically coupled to the power feeding unit in the entire range of the lifting and lowering range. Power is supplied to the car equipment via the power feeding section, power receiving section, and relay cable, which eliminates the need to install power receiving equipment such as a conventional device in the car. In the configuration using the contact power feeding method, an increase in the car weight and the driving power can be suppressed.

BRIEF DESCRIPTION OF THE DRAWINGS It is a block diagram which shows the elevator apparatus by Embodiment 1 of this invention. It is a block diagram which shows the counterweight of FIG. It is a block diagram which shows the power receiving unit of FIG. It is a block diagram which shows the counterweight by Embodiment 2 of this invention. It is a block diagram which shows the counterweight by Embodiment 3 of this invention. It is sectional drawing which shows the balance rope by Embodiment 4 of this invention.

Hereinafter, embodiments for carrying out the present invention will be described 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. FIG. 2 is a front view showing the counterweight 6 of FIG.
1 and 2, a machine room 1a is provided in the upper part of the hoistway 1 of the building. The machine room 1a is provided with a control panel (not shown), a hoisting machine 2, and a curling wheel 3. A main rope 4 is wound around the outer peripheral surface of the sheave of the hoisting machine 2 and the outer peripheral surface of the curling wheel 3.

  Both ends of the main rope 4 are arranged so as to hang down in the hoistway 1. A car 5 is suspended from one end of the main rope 4. A counterweight 6 is suspended from the other end of the main rope 4. The car 5 and the counterweight 6 are moved up and down in the hoistway 1 by the driving force of the hoisting machine 2.

  In the hoistway 1, a pair of power supply lines 7 </ b> A and 7 </ b> B as a power supply unit is stretched along the vertical direction (along the elevating direction of the counterweight 6). The pair of power supply lines 7A and 7B are arranged at intervals in the horizontal direction. Further, the feeder lines 7A and 7B are arranged in the vicinity of a region where the counterweight 6 is projected in the ascending / descending direction. Furthermore, the upper ends of the feeder lines 7A and 7B are disposed in the machine room 1a. The upper ends of the feeder lines 7A and 7B are electrically connected to a commercial power source (AC power source). Furthermore, the lower ends of the feeder lines 7A and 7B are fixed to the bottom of the hoistway 1.

  A car device 8 and a terminal box 9 are installed in the car 5. The car device 8 is, for example, a lighting device, an operation panel, a car position indicator, or the like. The terminal box 9 is a power distributor. The car device 8 and the terminal box 9 are electrically connected to each other via electric wires. Here, the car device 8 and the control panel are electrically connected to each other via a control cable (control moving cable: not shown) and can communicate with each other.

  The counterweight 6 includes a weight frame 10, a unit fixing plate 11, and a plurality of weight adjusting bodies 12 for adjusting the weight. The weight frame 10 has a quadrangular shape. The unit fixing plate 11 is attached to the inside of the weight frame 10. The inside of the weight frame 10 is partitioned into an upper space and a lower space by a unit fixing plate 11. The weight adjuster 12 is, for example, a metal block or an iron plate. The plurality of weight adjusting bodies 12 are stacked and fixed in the lower space of the weight frame 10.

  In the upper space of the weight frame 10, a power receiving unit (non-contact power receiving device) 13 as a power receiving unit is provided. Here, one end of a relay cable (power moving cable) 14 as a power transmission unit is electrically connected to the power receiving unit 13. The other end of the relay cable 14 is electrically connected to the terminal box 9 in the car 5.

  That is, the power reception unit 13 and the terminal box 9 are electrically connected to each other via the relay cable 14. The relay cable 14 transmits the power of the power receiving unit 13 to the car device 8. Further, the intermediate portion of the relay cable 14 is wound around the outer peripheral surfaces of the pair of sheaves 15A and 15B provided at the lower end portion of the hoistway 1. Further, the relay cable 14 moves as the car 5 and the counterweight 6 move up and down.

  Here, the weight of the counterweight 6 is set so that the weight of the power receiving unit 13 is added and then the number of the weight adjusting bodies 12 is adjusted so as to balance the weight of the car 5 when loading 50%, for example. Yes.

  Next, the configuration of the power receiving unit 13 will be described. FIG. 3 is a configuration diagram showing the power receiving unit 13 of FIGS. FIG. 3A is a perspective view showing the power receiving unit 13. FIG. 3B is a plan view showing the power receiving unit 13. In FIG. 3, the power receiving unit 13 has an iron core 16 and a coil 17. The shape of the iron core 16 is E-shaped. Moreover, the iron core 16 has three protrusions 16a to 16c arranged to face each other at intervals, and a yoke part 16d that connects these protrusions 16a to 16c. The yoke portion 16 d is fixed to the upper surface of the unit fixing plate 11. The protrusions 16 a to 16 c are arranged so as to protrude in the horizontal direction to the outside of the weight frame 10.

  The coil 17 is formed on the protruding portion 16b. The winding of the coil 17 is electrically connected to one end of the relay cable 14. Here, the protrusions 16a and 16b adjacent to each other are arranged so as to sandwich the feeder line 7A in the horizontal direction. Similarly, the protrusions 16b and 16c adjacent to each other are arranged so as to sandwich the feeder line 7B in the horizontal direction. That is, the coil 17 is disposed between the power supply lines 7A and 7B at a distance (in a non-contact state) from both of the power supply lines 7A and 7B.

  That is, the power receiving unit 13 is raised and lowered in the hoistway 1 as the counterweight 6 is raised and lowered, and the power supply lines 7A and 7B can be electromagnetically coupled to the power supply lines 7A and 7B in the entire range of the liftable range. 7B is arranged next to the 7B. As a result, the power receiving unit 13 receives power from the feeder lines 7A and 7B by electromagnetic coupling regardless of the height position of the counterweight 6, and the power received by the power receiving unit 13 passes through the relay cable 14 and the terminal box 9. Via the car device 8.

  According to the elevator apparatus of the first embodiment as described above, the power receiving unit 13 provided in the counterweight 6 is fed so that it can be electromagnetically coupled to the feeder lines 7A and 7B over the entire range in which it can be raised and lowered. It arrange | positions adjacent to the electric wires 7A and 7B. With this configuration, electric power from the AC power supply is supplied to the car device 8 via the feeder lines 7A and 7B, the power receiving unit 13 and the relay cable 14. As a result, it is not necessary to mount a power receiving system device such as a conventional device in the car 5, thereby suppressing an increase in the car weight and driving power in the configuration using the non-contact power feeding method for supplying power to the car device 8. be able to.

  Further, the weight of the counterweight 6 is set so as to balance the weight of the car 5 when loading 50% load, for example, by adding the weight of the power receiving unit 13 and adjusting the number of the weight adjusting bodies 12. . With this configuration, an increase in the weight of the counterweight 6 due to the provision of the power receiving unit 13 in the counterweight 6 can be suppressed.

  Further, since the power wiring in the control cable is omitted, the control cable can be thinner than the conventional device, and the weight of the car can be further reduced. As a result, it is possible to further reduce the electric power for driving the car up and down.

  In the first embodiment, the car device 8 and the control panel are electrically connected via the control cable. However, the control cable may be omitted, and the car device 8 and the control panel may be able to communicate with each other wirelessly.

Embodiment 2. FIG.
In the first embodiment, only AC power is supplied to the car device 8. On the other hand, in Embodiment 2, both AC power and DC power are supplied to the car device 8.

  FIG. 4 is a block diagram showing a counterweight according to Embodiment 2 of the present invention. In FIG. 4, the outline of the configuration of the elevator apparatus according to the second embodiment is the same as the configuration of the elevator apparatus according to the first embodiment. Further, the configuration of the elevator apparatus according to the second embodiment is such that the converter 21 is further provided in the upper space of the counterweight 6, and one end of the relay cable 14A is a coil of the power receiving unit 13 instead of the relay cable 14. 17 is different from the configuration of the elevator apparatus according to the first embodiment.

  Converter 21 is fixed to the upper surface of unit fixing plate 11. Further, the converter 21 is electrically connected to the winding of the coil 17 of the power receiving unit 13. Furthermore, converter 21 converts AC power received from power receiving unit 13 into DC power. Further, one end of the relay cable 14B is connected to the converter 21.

  The other end portions of the relay cables 14A and 14B are electrically connected to the terminal box 9 of the car 5 similarly to the relay cable 14 of the first embodiment. The intermediate portions of the relay cables 14A and 14B are wound around the outer peripheral surfaces of the sheaves 15A and 15B, similarly to the relay cable 14 of the first embodiment.

  Accordingly, AC power is supplied from the power receiving unit 13 to the car device 8 via the relay cable 14 </ b> A and the terminal box 9. At the same time, DC power is supplied from the power receiving unit 13 to the car device 8 via the converter 21, the relay cable 14 </ b> A, and the terminal box 9. That is, the relay cable 14A is for AC power transmission, and the relay cable 14B is for DC power transmission.

  According to the elevator apparatus of the second embodiment as described above, the converter 21 provided in the counterweight 6 converts the AC power from the power receiving unit 13 into DC power, and the DC power is converted into the relay cable 14B and It is supplied to the car device 8 through the terminal box 9. With this configuration, even if the car device 8 is a DC device, it is not necessary to provide the converter 21 in the car 5, and an increase in the weight of the car 5 can be suppressed, and DC power is supplied to the car device 8. be able to.

  In the second embodiment, both AC power and DC power are supplied to the car device 8. However, the present invention is not limited to this example, and only DC power may be supplied to the car device 8. In this case, the relay cable 14A can be omitted.

Embodiment 3 FIG.
In the second embodiment, the DC power output from the converter 21 is directly supplied to the car device 8. On the other hand, in the third embodiment, the DC power output from the converter 21 is temporarily stored in the battery 22, and the DC power is supplied from the battery 22 to the car device 8.

  FIG. 5 is a block diagram showing a counterweight according to Embodiment 3 of the present invention. In FIG. 5, the outline of the configuration of the elevator apparatus according to the third embodiment is the same as the configuration of the elevator apparatus according to the first and second embodiments. Further, the configuration of the elevator apparatus of the third embodiment is that a battery (power storage unit) 22 and an inverter 23 are further provided in the upper space of the counterweight 6, and a relay cable 14C instead of the relay cables 14A and 14B. , 14D is different from the configuration of the elevator apparatus of the second embodiment.

  The battery 22 and the inverter 23 are fixed to the upper surface of the unit fixing plate 11. The battery 22 is electrically connected to the converter 21. Battery 22 receives DC power output from converter 21 and stores the DC power. One end of the relay cable 14C is electrically connected to the battery 22. The inverter 23 is electrically connected to the battery 22. Inverter 23 receives DC power stored in battery 22 and converts the DC power into AC power.

  Furthermore, one end of the relay cable 14D is electrically connected to the inverter 23. The other end portions of the relay cables 14C and 14D are connected to the terminal box 9 of the car 5 similarly to the relay cable 14 of the first embodiment. The relay cable 14C is for DC power transmission, and the relay cable 14D is for AC power transmission. The intermediate portions of the relay cables 14C and 14D are wound around the outer peripheral surfaces of the sheaves 15A and 15B, similarly to the relay cable 14 of the first embodiment.

  Accordingly, DC power is supplied from the battery 22 to the car device 8 via the relay cable 14 </ b> C and the terminal box 9. At the same time, AC power is supplied from the battery 22 to the car device 8 via the inverter 23, the relay cable 14 </ b> D, and the terminal box 9.

  According to the elevator apparatus of the third embodiment as described above, the DC power output from the converter 21 is stored in the battery 22, and thereafter the DC power stored in the battery 22 is supplied to the car device 8. . At the same time, the DC power stored in the battery 22 is converted into AC power by the inverter 23, and this AC power is supplied to the car device 8. With this configuration, even when the power supply from the power supply lines 7A and 7B is cut off due to a power failure or the like, the direct current power and the alternating current power can be supplied to the car device 8 by the direct current power stored in the battery 22. The car device 8 can be operated. For example, lighting can be turned on, or an emergency intercom can be used for talking.

  In the third embodiment, both AC power and DC power are supplied to the car device 8. However, the present invention is not limited to this example, and only one of DC power and AC power may be supplied to the car device 8. In this case, one of the relay cable 14C and the relay cable 14D can be omitted.

Embodiment 4 FIG.
In the first to third embodiments, the relay cables 14 and 14A to 14D are used for power transmission. On the other hand, in Embodiment 4, the single core cable 34 is formed in the wire rope 30, and this single core cable 34 is used for electric power transmission.

  In the elevator apparatus of the fourth embodiment, a balancing rope is provided instead of the relay cable 14 of FIG. 1 of the first embodiment. The balancing rope connects the bottoms of the car 5 and the counterweight 6. Further, the balancing rope is constituted by a plurality of wire ropes 30. As shown in FIG. 6, the wire rope 30 includes a core portion 31 and a plurality of strands 32 arranged on the outer periphery of the core portion 31. The strand 32 is formed by twisting a plurality of strands 33 having different diameters.

  The core portion 31 is formed with a single-core cable 34 as power transmission means (embedded) including a conductor layer 34a that is a conductive wire and an insulating layer 34b that is, for example, an insulating rubber that covers the conductor layer 34a. ). One end of the single-core cable 34 is electrically connected to the power receiving unit 13, the converter 21, the battery 22, or the inverter 23 of the counterweight 6. The other end of the single-core cable 34 is electrically connected to the terminal box 9 of the car 5. Therefore, the wire rope 30 of the balancing rope of the fourth embodiment has power transmission means corresponding to the relay cables 14 and 14A to 14D of the first to third embodiments.

  According to the elevator apparatus of the fourth embodiment as described above, the single-core cable 34 is formed on the core portion 31 of the wire rope 30 of the balancing rope. With this configuration, it is not necessary to provide the relay cables 14 and 14A to 14D in the first to third embodiments separately from the balancing rope, so that the configuration can be simplified.

  In the fourth embodiment, an example in which a single-core cable is used as the power transmission unit has been described. However, the power transmission means is not limited to a single-core cable, and for example, a cable having two or more cores, a coaxial cable, or the like may be used as the power transmission means. That is, two or more cables, coaxial cables, and the like may be formed on the core portion 31 of the wire rope 30.

  Moreover, in Embodiment 4, the wire rope 30 in the balancing rope has the power transmission means, but the wire rope in the main rope 4 may have the power transmission means. That is, power transmission means may be formed at the core of the wire rope in the main rope 4.

  DESCRIPTION OF SYMBOLS 1 Hoistway, 4 Main rope, 5 Car, 6 Counterweight, 7A, 7B Feeding line (feeding part), 8 Car apparatus, 13 Power receiving unit (power receiving part), 14, 14A-14D Relay cable (power transmission means) , 21 Converter, 22 Battery (power storage unit), 23 Inverter, 30 Wire rope, 31 Core part, 34 Single-core cable (power transmission means), 34a Conductor layer, 34b Insulating layer.

Claims (6)

A car and a counterweight which are provided in the hoistway and are raised and lowered in the hoistway;
A main rope for suspending the car and the counterweight in the hoistway;
An elevator apparatus comprising: car equipment installed in the car,
A power feeding unit that is provided in the hoistway along the lifting and lowering direction of the counterweight and is disposed in the vicinity of a region in which the counterweight is projected in the lifting and lowering direction and electrically connected to an AC power source;
Adjacent to the power feeding section, provided on the counterweight, so that it can be raised and lowered in the hoistway as the counterweight rises and lowers, and can be electromagnetically coupled to the power feeding section in the entire range of the lifting and lowering range. A power receiving unit disposed together and receiving power from the power feeding unit by electromagnetic coupling;
An elevator apparatus, further comprising: a power transmission unit that electrically connects the power reception unit and the car device, and transmits power from the power reception unit to the car device. A converter provided on the counterweight for converting AC power received by the power receiving unit into DC power;
The power transmission means electrically connects the converter and the car device instead of the power receiving unit and the car device, and transmits DC power from the converter to the car device. The elevator apparatus according to claim 1. A power storage unit provided on the counterweight and capable of storing DC power from the converter;
The power transmission means electrically connects the power storage unit and the car device instead of the converter and the car device, and transmits DC power stored in the power storage unit to the car device. The elevator apparatus according to claim 2, characterized in that: A converter that is provided on the counterweight and that converts AC power received by the power receiving unit into DC power;
A power storage unit provided in the counterweight and capable of storing DC power from the converter;
An inverter provided on the counterweight and converting DC power stored in the power storage unit into AC power; and
The power transmission means electrically connects the inverter and the car device instead of the power receiving unit and the car device, and transmits AC power from the inverter to the car device. The elevator apparatus according to claim 1. The power transmission means is constituted by a wire rope provided therein, and further includes a balancing rope that connects bottom portions of the cage and the balancing weight. The elevator apparatus of Claim 1. The said main rope is comprised by the wire rope in which the said electric power transmission means was provided. The elevator apparatus of any one of Claim 1 to 4 characterized by the above-mentioned.

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