JP2012218833A - Elevator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an elevator in which rust prevention of a guide rail is improved.SOLUTION: The elevator includes: an elevating/lowering unit elevated and lowered inside an elevating/lowering path; a guide rail for guiding elevating and lowering of the elevating/lowering unit; a magnet part provided on the elevating/lowering unit side; a coil part provided on the guide rail side; and a plurality of generators for generating power by elevating and lowering of the elevating/lowering unit and making a current flow to the guide rail.

Description

  Embodiments described herein relate generally to an elevator in which a guide rail is rust-proof.

  There is a steel structure electronic rust prevention system that suppresses the occurrence of rust (rust) in steel structures due to rainwater, etc., increases durability, and extends the service life.

Japanese Patent Laid-Open No. 11-43789

  On the other hand, there has been a demand for rust prevention for the guide rails of elevators, and there has been a need for improvement regarding rust prevention.

  An object of this invention is to provide the elevator which improved the rust prevention of the guide rail.

  The elevator according to the embodiment includes a lifting unit that moves up and down in a hoistway, a guide rail that guides lifting of the lifting unit, a magnet unit provided on the lifting unit side, a coil unit provided on the guide rail side, And a plurality of generators for generating electric power by raising and lowering the elevating unit and flowing current to the guide rail.

The front view which showed the elevator concerning 1st Embodiment. Sectional drawing which expanded and showed the circumference | surroundings of the main rail of the elevator shown in FIG. Sectional drawing which expanded and showed the periphery of the counter rail of the elevator shown in FIG. The schematic diagram which showed the transformer and rectifier of the elevator shown in FIG. Sectional drawing which showed the flow of the electron inside the main rail and counter rail shown in FIG. Sectional drawing which showed the modification of the elevator concerning 1st Embodiment. Sectional drawing which expanded and showed the circumference | surroundings of the main rail and counterrail of the elevator concerning 2nd Embodiment. Sectional drawing which expanded and showed the circumference | surroundings of the main rail and counterrail of the elevator concerning 3rd Embodiment.

  A first embodiment of an elevator will be described with reference to FIGS. 1 to 5.

  As shown in FIGS. 1 to 3, the elevator 11 includes a hoistway 12, a wall 13 that surrounds the hoistway 12, a car 14 that moves up and down in the hoistway 12, and an upper side of the hoistway 12. The machine room 15 provided, the hoisting machine 16 provided in the machine room 15, the control panel 17 provided in the machine room 15 for controlling the hoisting machine 16, and the main sheave 23 of the hoisting machine 16 A main rope 21 that is wound and fixed to the car 14 at one end, a counterweight 22 that is fixed to the other end of the main rope 21, a deflecting sheave 24 provided adjacent to the main sheave 23, and a car 14, a metal main rail 25 that guides the raising and lowering of the metal 14, a metal main rail bracket 26 that fixes the main rail 25 to the wall 13, and a metal counter that guides the raising and lowering of the counterweight 22. A rail 27, a metal counter rail bracket 28 that fixes the counter rail 27 to the wall 13, a guide shoe 31 that is provided on the car 14 and guides the car along the main rail 25, and the car 14 A tail cord 32 for supplying control signals and electric power, a compensating rope 33 connecting the car 14 and the counterweight 22, a compensating sheave 34 around which the compensating rope 33 is wound, and the car 14 A plurality of first AC generators 35 (generators) that generate electricity by raising and lowering and a plurality of second AC generators 36 (generators) that generate electricity by raising and lowering the counterweight 22 are provided. The car 14 and the counterweight 22 are an example of a lifting unit that moves up and down in the hoistway 12. The main rail 25 and the counter rail 27 are examples of guide rails that guide the raising and lowering of the car 14 and the counterweight 22.

  The control panel 17 (control unit) controls the entire elevator 11 as well as the hoisting machine 16. As shown in FIG. 4, the elevator 11 includes a transformer 37 for adjusting the voltage of electricity generated by the first AC generator 35 and the second AC generator 36 to an appropriate value, and an AC current. And a rectifier 38 composed of a diode or the like for converting the current into a direct current.

  As shown in FIG. 2, the elevator 11 is provided at a position between the first insulator 41 provided at a position between the main rail 25 and the wall portion 13, and between the main rail 25 and the main rail bracket 26. The second insulator 42 is provided to prevent the current flowing through the main rail 25 from leaking to the wall portion 13. In the case where the main rail 25 and the wall portion 13 are separated and the main rail 25 is in contact with the wall portion 13 only by the main rail bracket 26, the first insulator 41 is not necessary. It is sufficient to use only the second insulator 42.

  Similarly, as shown in FIG. 3, the elevator 11 includes a third insulator 43 provided at a position between the counter rail 27 and the wall portion 13, and between the counter rail 27 and the counter rail bracket 28. And a fourth insulator 44 provided at a position so that the current flowing through the counter rail 27 does not leak into the wall portion 13. If the counter rail 27 and the wall 13 are separated from each other and the counter rail 27 is in contact with the wall 13 only by the counter rail bracket 28, the third insulator 43 is not necessary. It is sufficient to use only the fourth insulator 44. The first to fourth insulators 44 are each composed of a rubber sheet or the like.

  Each of the plurality of first AC generators 35 can generate electric power using the up-and-down movement of the car 14, and can pass a current (weak current) to the main rail 25 in the vicinity. As shown in FIG. 2, the plurality of first AC generators 35 include a plurality of first coil portions 45 provided at a substantially uniform pitch along the length direction of the main rail 25, and the car 14. For example, one first magnet portion 46 provided in the vicinity of the guide shoe 31 (FIG. 2 shows only one first coil portion 45). That is, one first magnet unit 46 is shared by a plurality of first AC generators 35. The first magnet unit 46 is made of, for example, a permanent magnet, but may be an electromagnet. The direction of the lines of magnetic force of the first magnet unit 46 is directed in the lateral direction perpendicular to the height direction of the hoistway 12.

  Further, in the present embodiment, one first magnet portion 46 is provided in the car 14, but the number of the first magnet portions 46 is not limited to this, for example, the height of the car 14 A plurality of first magnet portions 46 may be provided in the car 14 along the direction (vertical direction) to further improve the power generation efficiency.

  In the middle of the main rail 25, the first coil portions 45 are provided at a substantially uniform pitch (for example, one for every 1 m) as described above. It is densely arranged so that the pitch gradually decreases as it goes (for example, one for every 50 cm, and one for every 25 cm at a position closest to the end of the main rail).

  In the present embodiment, each first coil portion 45 is provided on, for example, a bottom portion 25B (flange portion) of the main rail 25. Each first coil portion 45 is wound with a coil in a direction orthogonal to the magnetic field lines from the first magnet portion 46. The first coil unit 45 can generate electric power when the lines of magnetic force from the first magnet unit 46 cross the coil of the first coil unit 45 by raising and lowering the car 14.

  The positive pole 47 (anode) of each first coil portion 45 is connected to the head portion 25 </ b> A of the main rail 25. The negative pole 48 (cathode) of the first coil portion 45 is connected to the bottom portion 25B (flange portion) of the main rail 25.

  Similarly, each of the plurality of second AC generators 36 can generate electric power by using the lifting and lowering movement of the counterweight 22 and flow current (weak current) to the counter rail 27 in the vicinity. . As shown in FIG. 3, the plurality of second AC generators 36 includes a plurality of second coil portions 51 provided at a substantially uniform pitch along the length direction of the counter rail 27, and the counterweight 22. For example, it has one second magnet portion 52 provided in the vicinity of the guide shoe 31 (in FIG. 2, only one second coil portion 51 is shown). That is, one second magnet unit 52 is shared by a plurality of second AC generators 36. The second magnet unit 52 is made of a permanent magnet, for example, but may be an electromagnet. In the present embodiment, one counter magnet 22 is provided in the counterweight 22, but the counterweight is balanced along the height direction (vertical direction) of the counterweight 22 in the same manner as the first magnet section 46. A plurality of second magnet parts 52 may be provided on the weight 22 to increase power generation efficiency.

  In the middle of the counter rail 27, the second coil portion 51 is provided at a substantially uniform pitch (for example, one for every 1 m) as described above. They are densely arranged so that the pitch gradually decreases as they go (for example, one for every 50 cm, and one for every 25 cm at the point closest to the end of the counter rail 27).

  In the present embodiment, each second coil portion 51 is provided on, for example, the bottom portion 25B (flange portion) of the counter rail 27. Each second coil unit 51 has a coil wound in a direction perpendicular to the magnetic field lines from the second magnet unit 52. The second coil unit 51 can generate electric power when the lines of magnetic force from the second magnet unit 52 cross the coil of the second coil unit 51 by raising and lowering the counterweight 22.

  The positive pole 47 (anode) of each second coil portion 51 is connected to the head portion 27 </ b> A of the counter rail 27. The negative pole 48 (cathode) of the second coil part 51 is connected to the bottom part 27 </ b> B (flange part) of the counter rail 27.

  Subsequently, the rust preventive action of the first embodiment will be described with reference to FIG. First, when the elevator 11 is operated and the car 14 and the counterweight 22 are moved up and down in the hoistway 12, the first coil portion 45 of the first AC generator 35 at the position where the car 14 has passed, and Electric power is generated in the second coil portion 51 of the second AC generator 36 at the position where the counterweight 22 has passed. The weak current generated by the first coil portion 45 flows from the head portion 25A of the main rail 25 toward the bottom portion 25B (actually, electrons are supplied from the bottom portion 25B of the main rail 25 toward the head portion 25A. ) Similarly, the weak current generated by the second coil portion 51 flows from the head portion 27A of the counter rail 27 toward the bottom portion 27B (actually, from the bottom portion 27B of the counter rail 27 toward the head portion 27A). Electrons are supplied). In this way, electrons are always supplied to the main rail 25 and the counter rail 27, and the metal constituting the main rail 25 and the counter rail 27 is prevented from being ionized, and the main rail 25 and the counter rail 27 are prevented from being rusted. .

  Further, in the normal elevator 11, the number of times that the car 14 and the counterweight 22 pass as the distance from both ends of the main rail 25 and the counter rail 27 decreases, and the first AC generator 35 and the second AC power generation are reduced. There is a possibility that sufficient power generation is not performed in the machine 36. In the present embodiment, since the first AC generator 35 and the second AC generator 36 are arranged with high density as they go to both ends of the main rail 25 and the counter rail 27, the car 14 and the counterweight 22 It is designed to supply the necessary amount of electrons for rust prevention if there is at least one pass.

  According to the first embodiment, the elevator 11 is provided on the guide rail side, a lifting unit that moves up and down in the hoistway 12, a guide rail that guides the lifting and lowering of the lifting unit, a magnet portion provided on the lifting unit side, and the guide rail side. And a plurality of generators that generate electric power by raising and lowering the elevating unit and flow current to the guide rail.

  According to the above configuration, the guide rails (main rail 25, counter rail 27) can be rust-proof using a generator that generates electricity by raising and lowering the lifting unit (car 14, balance weight 22). The power supply is unnecessary and the configuration can be simplified, and clean energy that has not been used so far can be used effectively.

  Further, the elevator 11 is provided on at least one of the wall portion 13 surrounding the hoistway 12, the bracket for attaching the guide rail to the wall portion 13, the guide rail and the wall portion 13, and the guide rail and the bracket. And an insulator.

  According to this, a part of the current (electrons) supplied to the guide rail does not leak to the wall portion 13, and the effect of rust prevention (electronic rust prevention) of the guide rail can be exhibited more efficiently. .

  The coil portions are provided at a substantially uniform pitch along the length direction of the guide rail. According to this configuration, a plurality of coil parts (first coil part 45, second coil part 51) can be provided along the guide rails (main rail 25, counter rail 27). Even if the amount of power generation in one is small, the amount of power generation can be supplemented by the number of coil portions. Thereby, sufficient electrons are supplied to each part of the guide rail, and the rust prevention effect of the guide rail can be sufficiently exhibited.

  Furthermore, the coil portions are densely provided as they approach the both end portions of the guide rail. For this reason, the power generation amount does not become insufficient at both ends of the guide rail (main rail 25, counter rail 27) where the number of times the elevator unit (the car 14, the counterweight 22) passes is inevitably reduced. A sufficient amount of electrons for rusting can be supplied to the guide rail.

  With reference to FIG. 6, the modification of the elevator of 1st Embodiment is demonstrated. In this modification, unlike the first embodiment, the first coil portion 45 of the first AC generator 35 and the second coil portion 51 of the second AC generator 36 are the main rail 25 and the counter rail. 27 on the wall 13 in the vicinity of the main rail 25 and the counter rail 27, not on the bottom 25B. The first magnet portion 46 is provided not at the guide shoe 31 but at the tip of the structure 49 that protrudes from the car 14. Similarly, the second magnet portion 52 is provided not at the guide shoe 31 but at the tip of the structure 50 protruding from the counterweight 22.

  Also according to this modification, a sufficient rust prevention effect can be obtained for the main rail 25 and the counter rail 27. That is, the installation positions of the first coil part 45 and the second coil part 51 are not limited to the main rail 25 and the bottom part 25 </ b> B of the counter rail 27. However, in the first embodiment, the first coil portion 45 and the second coil portion 51 are provided on the bottom portion 25B of the main rail 25 and the counter rail 27, thereby effectively utilizing the space in the hoistway 12. ing.

  Subsequently, a second embodiment of the elevator will be described with reference to FIG. The elevator 11 of the second embodiment differs from the first embodiment in that it has a plurality of external power sources 61 and the like that can flow current to the guide rail, but the other parts are It is common. For this reason, a different part from 1st Embodiment is mainly demonstrated, a common code | symbol is attached | subjected about a common location, and description is abbreviate | omitted.

  In the present embodiment, the plurality of first AC generators 35 are arranged at a substantially uniform pitch along the length direction of the main rail 25 (for example, one for every 1 m). And instead of arranging the 1st alternator 35 densely as it goes to both ends of the main rail 25 as in the first embodiment, in this embodiment, there are a plurality of parts near the both ends of the main rail 25. An external power supply 61 is attached to each of the first AC generators 35.

  That is, one of the plurality of external power supplies 61 is connected to the first AC generator 35 in the vicinity of the lower end (one end portion) of the main rail 25. One of the plurality of external power supplies 61 is connected to the first AC generator 35 in the vicinity of the upper end (the other end) of the main rail. In the present embodiment, a battery is used as an example of these external power sources 61.

  Similarly, in the present embodiment, a plurality of second AC generators 36 are arranged at a substantially uniform pitch along the length direction of the counter rail 27 (for example, one for every 1 m). Then, instead of densely arranging the second AC generator 36 as it goes to both ends of the counter rail 27 as in the first embodiment, in this embodiment, there are a plurality of parts near the both ends of the counter rail 27. An external power supply 61 is attached to each of the second AC generators 36.

  That is, one of the plurality of external power supplies 61 is connected to the second AC generator 36 in the vicinity of the lower end (one end portion) of the counter rail 27. One of the plurality of external power supplies 61 is connected to the second AC generator 36 in the vicinity of the upper end (the other end) of the counter rail 27. In the present embodiment, a battery is used as an example of these external power sources 61. The external power supply 61 is not limited to a battery, and may be one that supplies power from the control panel 17, for example.

  In the present embodiment, each of the plurality of first AC generators 35 has a first acquisition unit 62 that acquires the amount of power generated by itself and transmits it to the control panel 17 (control unit). is doing. Similarly, each of the plurality of second AC generators 36 has a second acquisition unit 63 that acquires the amount of power generated by itself and transmits it to the control panel 17 (control unit). Yes.

  Then, the antirust effect | action in the elevator 11 of this embodiment is demonstrated. When the car 14 or the counterweight 22 is moved up and down by the normal operation of the elevator 11, the first car generator 35 and the counterweight 22 pass through the first AC generator 35 and the second AC generator 36, and the first Electric power is generated in the coil unit 45 and the second coil unit 51. The electricity thus generated is supplied as electrons from the bottoms 25B and 27B of the main rail 25 and the counter rail 27 toward the heads 25A and 27A. At the same time, the first acquisition unit 62 acquires the amount of power generated by the first AC generator 35, and the second acquisition unit 63 acquires the amount of power generated by the second AC generator 36. These results are transmitted to the control panel 17 (control unit). The control panel 17 compares the power generation amount of each first AC generator 35 and the power generation amount of each second AC generator 36 with a predetermined reference value. As a result of comparison with the reference value, the switch 64 is operated so that current flows from the external power supply 61 to the main rail 25 and the counter rail 27 at a place where only a power generation amount lower than the reference value is obtained. When the amount of power generation exceeding the reference value is obtained, no current is supplied from the external power supply 61.

  According to the second embodiment, the elevator 11 is provided on the guide rail side, a lifting unit that moves up and down in the hoistway 12, a guide rail that guides the lifting and lowering of the lifting unit, a magnet portion provided on the lifting unit side, and the guide rail side. A plurality of generators that generate electric power by raising and lowering the elevating unit and flowing current to the guide rail, a plurality of external power sources 61 that can flow current to the guide rail, and a plurality of power generation A plurality of acquisition units that acquire their own power generation amount and currents from a plurality of external power sources 61 to the guide rails when the power generation amounts acquired by the plurality of acquisition units are smaller than a predetermined value. A control unit for flowing

  According to this configuration, when the electric power planned in the generator cannot be generated, the external power supply 61 can be used to flow current to the guide rail (main rail 25, counter rail 27), and the guide rail can reliably Can exhibit anti-rust effect.

  One of the plurality of external power sources is provided in the vicinity of one end portion of the guide rail, and one of the plurality of external power sources is provided in the vicinity of the other end portion of the guide rail. According to this configuration, the external power source is used as a spare power source at both ends of the guide rail (main rail 25, counter rail 27) where the number of times the elevator unit (the car 14, the counterweight 22) passes is inevitably reduced. Can be arranged. As a result, when a predetermined power generation amount cannot be obtained in the generator, a current can be passed from the external power supply 61 to the guide rail, and the rust prevention effect of the guide rail can be reliably exhibited.

  In the present embodiment, the external power source (battery) is provided only in the vicinity of both ends of the main rail 25 and the counter rail 27. However, the present embodiment is not limited to this example. An external power supply 61 may be arranged as a preliminary power supply provided at a location where the amount is small.

  Next, a third embodiment of the elevator will be described with reference to FIG. The elevator 11 of the third embodiment is different from the first embodiment in that the electricity generated by the first AC generator 35 and the second AC generator 36 is temporarily charged in the battery 71. The other parts are common. For this reason, a different part from 1st Embodiment is mainly demonstrated, a common code | symbol is attached | subjected about a common location, and description is abbreviate | omitted.

  In the present embodiment, the elevator 11 includes a plurality of batteries 71 connected to each of the plurality of first AC generators 35 or the plurality of second AC generators 36, and a plurality of batteries 71 connected to the plurality of batteries 71. A plurality of switches 64 for passing a current from the battery 71 to the main rail 25 or the counter rail 27, and cutting off a current from the plurality of batteries 71; and a plurality of timers 72 respectively connected to the plurality of switches 64. Have. The positive electrode 47 (anode) of each battery 71 is connected to the main rail 25 or the head 25A (27A) of the counter rail 27. The negative pole 48 (cathode) of each battery 71 is connected to the bottom 25B (27B) of the main rail 25 or the counter rail 27. The arrangement of the plurality of first AC generators 35 and the plurality of second AC generators 36 is the same as that in the first embodiment.

  The rust preventive action of the elevator according to this embodiment will be described. In the present embodiment, electricity generated by the plurality of first alternating current generators 35 and the plurality of second alternating current generators 36 is converted into direct current through a rectifier 38 formed of, for example, a diode or the like, and is temporarily supplied to the battery 71. Charged. The electric power charged in the battery 71 is caused to flow through the main rail 25 or the counter rail 27 for several seconds, for example, once every several hours, by a switch 64 that operates under the control of the timer 72. In addition, about the space | interval which flows an electric current, and the flow time, it can set suitably according to conditions, such as humidity in a building.

  According to the third embodiment, the elevator 11 is provided on the guide rail side, a lifting unit that moves up and down in the hoistway, a guide rail that guides the lifting and lowering of the lifting unit, a magnet portion provided on the lifting unit side, and the guide rail side. A plurality of generators that generate electricity by raising and lowering the lifting unit, a plurality of batteries 71 that store electricity generated by the plurality of generators, and guide from the plurality of batteries 71 at regular time intervals. And a timer 72 for supplying current to the rail.

  According to this configuration, since the electric power generated by the generator can be once charged and stored in the battery 71, for example, even when the elevator 11 is stopped for a certain period, As long as the power continues, the guide rail can exhibit a rust prevention effect for a certain period of time. Similarly, the antirust effect can be exhibited even at night when the elevator 11 is not frequently operated, and the rust generation rate can be further reduced. Thereby, the life of the guide rail can be further extended.

  The elevator 11 of the present invention is not limited to the embodiment described above, and the generator that appears in the embodiment is merely an example. In addition, power is generated using either the kinetic energy when the elevator unit (the car 14, the counterweight 22) is raised or lowered and the energy (vibration, wind power, regenerative power) derived therefrom. Current may be passed through the guide rails (main rail 25, counter rail 27) to prevent rust.

  Specifically, using the vibration generated in the main rail 25 and the counter rail 27 when the car 14 and the counterweight 22 are raised and lowered, for example, a piezoelectric element provided adjacent to these is used as a generator to generate power, Even if a weak current is passed through the main rail 25 and the counter rail 27, a certain degree of rust prevention effect can be expected. This vibration is generated, for example, when a roller type guide shoe provided on the car 14 and the counterweight 22 contacts the main rail 25 and the counter rail 27 when the car 14 and the counterweight 22 are raised and lowered.

  Similarly, even if power is generated by a small wind power generator using wind force generated when the car 14 and the counterweight 22 are raised and lowered, and a weak current is caused to flow through the main rail 25 and the counter rail 27, the same is prevented. Rust effect can be expected.

  Further, after regenerating electric power generated in the hoist 16 when the moving car 14 is stopped, the electric power is transformed and rectified, and further stored in the battery 71 if necessary. Even if a weak current is passed through the main rail 25 and the counter rail 27, there is an antirust effect. Of course, various modifications can be made without departing from the scope of the invention.

DESCRIPTION OF SYMBOLS 11 ... Elevator, 12 ... Hoistway, 13 ... Wall part, 14 ... Car, 17 ... Control board, 22 ... Balance weight, 25 ... Main rail, 26 ... Main rail bracket, 27 ... Counter rail, 28 ... Counter rail bracket 35 ... 1st AC generator, 36 ... 2nd AC generator, 41 ... 1st insulator, 42 ... 2nd insulator, 43 ... 3rd insulator, 44 ... 4th insulator , 45 ... 1st coil part, 46 ... 1st magnet part, 51 ... 2nd coil part, 52 ... 2nd magnet part, 61 ... External power supply, 62 ... 1st acquisition part, 63 ... 2nd 64, switch, 71, battery, 72, timer

Claims (9)

A lifting unit that moves up and down in the hoistway;
A guide rail for guiding the lifting and lowering of the lifting unit;
A plurality of generators having a magnet part provided on the lifting unit side and a coil part provided on the guide rail side, generating power by raising and lowering the lifting unit, and flowing current to the guide rail;
Elevator equipped with. A wall surrounding the hoistway;
A bracket for attaching the guide rail to the wall;
An insulator provided between at least one of the guide rail and the wall and between the guide rail and the bracket;
The elevator according to claim 1, comprising:   The elevator according to claim 2, wherein the coil portions are provided at a substantially uniform pitch along a length direction of the guide rail.   The elevator according to claim 3, wherein the coil portions are densely provided as approaching both end portions of the guide rail.   The elevator according to claim 1, wherein the guide rail side includes the guide rail itself and a wall portion that is located in the vicinity of the guide rail and surrounds the hoistway. A lifting unit that moves up and down in the hoistway;
A guide rail for guiding the lifting and lowering of the lifting unit;
A magnet unit provided on the lifting unit side, a coil unit provided on the guide rail side, and an acquisition unit that acquires its own power generation amount, and generates power by raising and lowering the lifting unit, and the guide rail A plurality of generators for supplying current to
A plurality of external power sources capable of passing a current through the guide rail;
A control unit for causing a current to flow from the plurality of external power sources to the guide rail when the power generation amount acquired by the acquisition unit is smaller than a predetermined value;
Elevator equipped with.   One of the plurality of external power supplies is provided in the vicinity of one end of the guide rail, and one of the plurality of external power supplies is provided in the vicinity of the other end of the guide rail. The elevator according to claim 6. A lifting unit that moves up and down in the hoistway;
A guide rail for guiding the lifting and lowering of the lifting unit;
A plurality of generators having a magnet part provided on the lifting unit side and a coil part provided on the guide rail side, and generating power by raising and lowering the lifting unit;
A plurality of batteries for storing electricity generated by the plurality of generators;
A timer for causing a current to flow from the plurality of batteries to the guide rail at regular time intervals;
Elevator equipped with. A lifting unit that moves up and down in the hoistway;
A guide rail for guiding the lifting and lowering of the lifting unit;
A plurality of generators that generate electric power by either kinetic energy at the time of raising or lowering of the elevating unit and energy derived from the kinetic energy, and flowing current to the guide rail,
Elevator equipped with.

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