WO2006112008A1

WO2006112008A1 - Elevator device

Info

Publication number: WO2006112008A1
Application number: PCT/JP2005/007134
Authority: WO
Inventors: Masanori Yasue
Original assignee: Mitsubishi Denki Kabushiki Kaisha
Priority date: 2005-04-13
Filing date: 2005-04-13
Publication date: 2006-10-26
Also published as: CN101163636B; EP1870368B1; JP4917030B2; EP1870368A4; EP1870368A1; JPWO2006112008A1; CN101163636A

Abstract

An elevator device has a generator for generating electric power according to the speed of an elevator car and an emergency stop device for forcibly braking the car. The emergency stop device is adapted to operate by the power generated by the generator when the speed of the car is abnormal. Further, the emergency stop device is mounted on the car.

Description

Specification

Elevator equipment

Technical field

[0001] The present invention relates to an elevator apparatus provided with an emergency stop device for forcibly stopping a force or a counterweight. Background art

In conventional elevator apparatuses, an emergency stop device that is operated by an electromagnetic actuator may be mounted on a car in order to quickly perform an emergency stop operation of a force. The electromagnetic actuator is operated by power supply from a battery! (See Patent Document 1).

[0003] Patent Document 1: Pamphlet of International Publication No. 2004Z083091

Disclosure of the invention

Problems to be solved by the invention

[0004] With recent advances in battery technology, small and large-capacity batteries have been developed and used in portable devices and the like. However, when used as a power source for emergency stop devices, the lifespan is sufficient. Absent. In addition, a large-capacity capacitor is also being developed. It uses electric energy stored in the past and discharges little by little over time, so it is guaranteed that power can be supplied at the required moment. It cannot be said that there is. Therefore, there is a demand for quicker and more reliable operation of the emergency stop device.

[0005] The present invention has been made to solve the above-described problems, and forcibly stops the lifting body when the speed of the car or the counterweight (lifting body) is excessive. It is an object of the present invention to provide an elevator apparatus that can operate the emergency stop device more quickly and reliably.

Means for solving the problem

[0006] An elevator apparatus according to the present invention includes a generator that generates electric power according to the speed of a lifting body, and a power that is mounted on the lifting body and that is generated by the generator when the speed of the lifting body is abnormal. And is equipped with an emergency stop device for forcibly braking the force. Brief Description of Drawings

FIG. 1 is a configuration diagram showing an elevator apparatus according to Embodiment 1 of the present invention.

2 is a main part configuration diagram showing the elevator apparatus of FIG. 1. FIG.

FIG. 3 is a side view showing the pulley device of FIG. 2.

FIG. 4 is a plan view showing an elevator apparatus according to the second embodiment.

5 is a main part front view showing the pulley apparatus of FIG. 4. FIG.

BEST MODE FOR CARRYING OUT THE INVENTION

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

Embodiment 1.

FIG. 1 is a configuration diagram showing an elevator apparatus according to Embodiment 1 of the present invention. In the figure, a pair of car guide rails 2 and a pair of counterweight guide rails (not shown) are installed in the hoistway 1. A car 3 that is a lifting body is arranged between the car guide rails 2, and a counterweight 4 that is a lifting body is arranged between the counterweight guide rails. The force 3 is moved up and down in the hoistway 1 while being guided by each force guide rail 2, and the counterweight 4 is moved up and down in the hoistway 1 while being guided by each counterweight guide rail.

At the upper part of the hoistway 1, there are provided a deflecting wheel 5 and a lifting machine 6 that is a driving device that generates driving force for raising and lowering the force 3 and the counterweight 4. The lifting machine 6 includes a drive device body 7 including a motor and a drive sheave 8 rotated by the drive device body 7. A plurality of main ropes 9 are wound around the deflector 5 and the drive sheave 8. The car 3 and the counterweight 4 are suspended in the hoistway 1 by the main ropes 9. The force 3 and the counterweight 4 are moved up and down in the hoistway 1 by the rotation of the drive sheave 8.

[0010] The car 3 is mounted with a pair of emergency stop devices 10 facing the car guide rails 2 respectively. Each emergency stop device 10 has a braking unit 11 for generating a braking force to the car 3 and an electromagnetic drive unit 12 for operating the braking unit 11 by energization. Each braking portion 11 has a wedge 13 that can be brought into and out of contact with the force guide rail 2. The wedge 13 is pressed against the car guide rail 2 by the operation of the braking unit 11. Each braking portion 11 generates a braking force against the force 3 when the wedge 13 is pressed against the car guide rail 2. The force 3 is forced by the braking force generated by the operation of each braking part 11. Stopped.

[0011] The car 3 also includes a first driven pulley 14 and a second driven pulley 15 which are a pair of rotating bodies rotated according to the speed of the force car 3, and first and second driven pulleys 14, A pulley device (rotating body device) 17 having an urging device 16 for urging the first and second driven pulleys 14 and 15 in a direction away from each other is mounted. In this example, the pulley device 17 is provided at the lower portion of the car 3. The first and second driven pulleys 14 and 15 are arranged side by side in the vertical direction. That is, the first driven pulley (one rotating body) 14 is disposed above the second driven pulley (the other rotating body) 15. A governor rope 18 is wound around the first and second driven pulleys 14 and 15 so as to surround the first and second driven pulleys 14 and 15 together.

An upper fixing member 19 and a lower fixing member 20 that are respectively fixed to the car guide rail 2 are provided at the upper and lower portions of the hoistway 1. One end of a governor loop 18 is connected to the upper fixing member 19 via a spring (elastic body) 21. The other end of the governor rope 18 is connected to the lower fixing member 20 via a spring (elastic body) 22. The governor rope 18 is wound around the first driven pulley 14 from the lower fixing member 20 side, and then is wound around the second driven pulley 15 and reaches the upper fixing member 19 side.

[0013] The governor rope 18 is given tension by the biasing forces of the springs 21, 22 and the biasing device 16. As a result, a frictional force is generated between the governor rope 18 and the first and second driven pulleys 14 and 15, and the first and second driven pulleys 14 and 15 are prevented from slipping with respect to the governor rope 18. The first and second driven pulleys 14 and 15 are rotated according to the speed of the force 3 when the pulley device 17 is moved with respect to the governor rope 18 when the car 3 is moved up and down in the hoistway 1. It has become so. That is, the rotational speed of the first and second driven pulleys 14 and 15 increases as the speed of the force 3 increases, and decreases as the speed of the force 3 decreases / J. .

[0014] It should be noted that the bottom of the hoistway 1 is balanced when the car shock absorber 23 for reducing the impact on the car 3 when the force 3 is dropped and the counterweight 4 is dropped. A counterweight buffer 24 for reducing the impact on the weight 4 is installed. The car 3 is connected to a control cable (moving cable) 25 for transmitting information between the control device (not shown) for controlling the operation of the elevator and the car 3. . FIG. 2 is a main part configuration diagram showing the elevator apparatus of FIG. FIG. 3 is a side view showing the pulley device 17 of FIG. In the figure, the car 3 includes a first generator 26 and a second generator 27 that generate power by the movement of the car 3, and a first car speed detector 28 that detects the speed of the car 3. And a second car speed detector 29. The first generator 26 and the first car speed detector 28 are provided on the rotating shaft of the first driven pulley 14. Further, the second generator 27 and the second car speed detector 29 are provided on the rotation shaft of the second driven pulley 15. The first generator 26 and the first car speed detector 28 may be integrated with the first driven pulley 14 without being provided on the rotating shaft of the first driven pulley 14, or the outer circumference of the first driven pulley 14 may be integrated. It may be engaged with the part. Further, the second generator 27 and the second car speed detector 29 may be integrated with the second driven pulley 15 without being provided on the rotating shaft of the second driven pulley 15, or may be integrated with the second driven pulley 15. May be engaged with 15 outer peripheries.

The first generator 26 generates electric power corresponding to the speed of the force 3 based on the rotation of the first driven pulley 14, and the second generator 27 generates the car 3 based on the rotation of the second driven pulley 15. It generates power according to the speed of the. Each emergency stop device 10 is operated by the electric power generated by the first and second generators 26 and 27 when the speed of the force 3 is abnormal (excessive). In other words, the magnitude of the power generated by the first and second generators 26 and 27 increases as the speed of the car 3 increases, so the power generated by the first and second generators 26 and 27 The emergency stop device 10 does not operate until it reaches the predetermined magnitude when the speed of the force 3 is increased abnormally.

The first car speed detector 28 generates a signal corresponding to the speed of the force 3 based on the rotation of the first driven pulley 14, and the second car speed detector 29 is connected to the second driven pulley 15. A signal corresponding to the speed of the car 3 is generated based on the rotation. Examples of the first and second car speed detectors 28 and 29 include encoders.

[0018] Further, the car 3 includes a speed control device 30 for supplying power to the electromagnetic drive unit 12 as much as the first and second generators 26 and 28 only when the speed of the force 3 is abnormal. A backup circuit 31 is installed.

[0019] The speed governor 30 includes a car receiver 32 that receives power from the first and second generators 26 and 27, and a car based on information from the first and second car speed detectors 28 and 29, respectively. 3 speed A speed control unit 33 that determines whether or not there is an abnormality and supplies the power received by the power receiving unit 32 to each emergency stop device 10 only when the speed of the force 3 is abnormal is provided.

[0020] The power receiving unit 32 operates the power from the first and second generators 26, 28 to operate the control power source for the control operation of the speed governor 30 and the electromagnetic drive unit 12 of the emergency stop device 10. As a power source for emergency operation, the speed control unit 33 is supplied.

[0021] The speed control unit 33 can be controlled by supplying control power from the power receiving unit 32. The speed control unit 33 also includes information from the first processing unit 34 that determines whether there is an abnormality in the speed of the car 3 based on information from the first car speed detector 28, and information from the second car speed detector 29. The speed of the car 3 is determined to be abnormal by at least one of the second processing unit 35 for determining whether the speed of the car 3 is abnormal based on the information and the first and second processing units 34, 35. In some cases, an emergency output unit 36 is provided for supplying emergency operation power from the power receiving unit 32 to each emergency stop device 10.

[0022] In each of the first and second processing units 34, 35, an overspeed setting pattern, which is a reference for determining whether there is an abnormality in the speed of the car 3, is provided in the vertical direction in the hoistway 1. It is set in advance to correspond to all positions. In this example, the overspeed setting pattern is set so as to continuously decrease toward the terminal end in a predetermined section near the terminal end (upper end and lower end) of the hoistway 1.

[0023] The first processing unit 34 obtains a signal from the first car speed detector 28 as force information, and obtains the position and speed of the force 3 based on the obtained force information. 37 and a first determination unit 38 that determines whether there is an abnormality in the speed of the cage 3 by comparing the position and speed of the car 3 obtained by the first calculation unit 37 with the overspeed setting pattern. Have.

[0024] The second processing unit 35 acquires a signal from the second car speed detector 29 as force information, and calculates a position and speed of the car 3 based on the acquired car information, A second determination unit 40 for determining whether or not the speed of the car 3 is abnormal by comparing the position and speed of the car 3 obtained by the second calculation unit 39 with the overspeed setting pattern. ing.

[0025] The emergency output unit 36 determines whether or not the emergency operation power from the power receiving unit 32 is supplied to each emergency stop device 10 based on information from each of the first and second determination units 38 and 40. Are to be determined. That is, the emergency output unit 36 performs the determination by the first determination unit 38 and the first determination unit 38. 2 Based on the double determination with the determination by the determination unit 40, it is determined whether or not the power to supply the emergency stop power from the power reception unit 32 to each emergency stop device 10 is determined.

[0026] The knock-up circuit 31 determines whether or not the speed of the force 3 is abnormal based on the magnitude of the electric power from the first and second generators 26 and 27, and the speed of the force 3 is abnormal. The electric power from the first and second generators 26 and 27 is supplied to the electromagnetic drive unit 12 only when it is determined that. The knock-up circuit 31 is set with an abnormality determination set value that is a reference for determining whether there is an abnormality in the speed of the car 3 by comparing with the magnitude of electric power from the first and second generators 26 and 27. Has been. The set value for abnormality determination is set to a value larger than the rated speed of the elevator.

Each emergency stop device 10 is operated by supplying power to the electromagnetic drive unit 12 at least one of the speed control device 30 and the backup circuit 31 and forcibly generates a braking force for the force 3. It's like! /

Next, the operation will be described. When the cage 3 is moved in the hoistway 1, the first and second driven pulleys 14 and 15 are rotated according to the speed of the cage 3. As a result, electric power corresponding to the speed of the car 3 is supplied from the first and second generators 26 and 27 to the governor 30 and the backup circuit 31, and a signal corresponding to the speed of the car 3 is supplied to the first and second generators 26 and 27. 2 is transmitted from the car speed detectors 28 and 29 to the governor 30.

[0029] The control operation of the speed governor 30 is performed by supplying power from the first and second generators 26 and 27. From the control operation of the speed governor 30, the first processing unit 34 determines whether there is an abnormality in the speed of the car 3 based on the signal from the first car speed detector 28, and the second processing unit 35 Based on the signal from the car speed detector 29, a determination is made as to whether the car 3 speed is abnormal.

[0030] Further, in the knock-up circuit 31, in parallel with the determination by the speed governor 30, whether there is an abnormality in the speed of the car 3 based on the magnitude of the electric power from the first and second generators 26, 27 Is judged.

[0031] When the elevator is normally operated and the speed of the force 3 is normal, the power supply to each emergency stop device 10 from each of the speed control device 30 and the backup circuit 31 is stopped. ing. As a result, force 3 is forced by the action of each emergency stop device 10. It will never be stopped.

[0032] For example, when the speed of the car 3 is abnormally increased due to the breakage of the main rope 9, and the speed of the car 3 is determined to be abnormal by at least one of the first and second processing units 34, 35. The electric power generated in the first and second generators 26 and 27 is supplied from the emergency output unit 36 of the speed governor 30 to each emergency stop device 10.

[0033] Further, even when there is no power supply from the speed control device 30 to each emergency stop device 10, if the speed of the force 3 is determined to be abnormal by the backup circuit 31, the first and the first 2 The electric power generated by the generators 26 and 27 is supplied from the knock-up circuit 31 to each emergency stop device 10.

[0034] The magnitude of the electric power supplied to each emergency stop device 10 from each of the speed governor 30 and the backup circuit 31 is that the speed of the force 3 is abnormally increased. It is large enough to operate. Accordingly, when the speed of the force 3 increases abnormally, each emergency stop device 10 is operated by the supply of electric power from the speed governor 30 or the backup circuit 31, and the movement of the force 3 is stopped.

[0035] In such an elevator apparatus, the first and second generators 26, 27 generate electric power according to the speed of the car 3, and the first and second power generators when the speed of the car 3 is abnormal. Since the emergency stop device 10 is operated by the power of the machines 26 and 27, the kinetic energy of the car 3 can be converted into electric power, and even when the speed of the car 3 increases abnormally during a power failure. The first and second generators 26 and 27 can generate enough power for each emergency stop device 10 to operate. Therefore, in the event of a power failure, for example, the emergency stop device does not operate due to causes such as deterioration of the battery, so that it is possible to avoid such a situation and operate the emergency stop device 10 in a shorter time and more reliably. Can be made.

[0036] Further, since the first and second generators 26 and 27 are mounted on the force cage 3, the supply of electric power to each emergency stop device 10 is interrupted by the breakage of the control cable 25, for example. Power can be supplied to each emergency stop device 10 more reliably.

[0037] Further, the first and second car speed detectors 28 and 29 generate signals corresponding to the speed of the car 3, and the governor 30 is supplied from the first and second car speed detectors 28 and 29. Of the basket 3 based on the signal Whether or not the speed is abnormal is determined, and only when it is determined that the speed of the force 3 is abnormal, the power from the first and second generators 26 and 27 is supplied to each emergency stop device 10. Therefore, the malfunction of each emergency stop device 10 can be prevented, and the operation of each emergency stop device 10 when the speed of the force 3 is abnormal can be performed more reliably.

[0038] Further, since the first and second car speed detectors 28 and 29 are mounted on the force 3, the signals from the first and second car speed detectors 28 and 29 are sent to the governor 30. Can be transmitted more reliably.

The pulley device 17 includes first and second driven pulleys 14 and 15 that are rotated according to the speed of the force 3, and the speed governor 30 includes the first and second driven pulleys 14. , 15 is used to determine whether the speed of the car 3 is abnormal or not, so the determination by the governor 30 can be performed with a simple configuration and more reliably.

Further, the speed governor 30 includes a first processing unit 34 that determines whether the speed of the car 3 is abnormal based on the rotation of the first driven pulley 14, and a force based on the rotation of the second driven pulley 15. Based on the information from each of the second processing unit 35 for determining the speed abnormality of the third and the first and second processing units 34, 35, at least one of the first and second processing units 34, 35 is used. Since it has been determined that the speed of the car 3 is abnormal due to the car, it has an emergency output unit 36 that supplies power from the first and second generators 26, 27 to the emergency stop device 10. Thus, a plurality of determinations can be made as to whether or not the speed of the force 3 is abnormal, and the reliability of determining whether or not power is supplied to each emergency stop device 10 can be improved. Thereby, it is possible to further prevent the emergency stop device 10 from malfunctioning.

[0041] Further, the first and second driven pulleys 14 and 15 are wound around the first and second driven pulleys 14 and 15 together with a governor rope 18 stretched vertically in the hoistway 1. The first and second driven pulleys 14 and 15 are biased by the biasing device 16 in a direction away from each other so that tension is applied to the governor rope 18. A large frictional force can be generated between the driven pulleys 14, 15 and the governor rope 18, and slippage of the first and second driven pulleys 14, 15 with respect to the governor rope 18 can be prevented. As a result, the first and second driven pulleys 14 and 15 can be rotated more reliably according to the speed of the car 3. [0042] Further, since the governor rope 18 is connected to the upper part of the hoistway 1 through the spring 21 and is connected to the lower part of the hoistway 1 through the spring 22, the governor rope 18 can be tensioned. Even if the length of the governor rope 18 is extended due to changes over time, the extension of the governor rope 18 can be absorbed by the elasticity of the springs 21 and 22, and the first and second driven pulleys 14 and 15 and the governor rope It is possible to prevent a decrease in the magnitude of the frictional force between the two.

[0043] Embodiment 2.

FIG. 4 is a plan view showing the elevator apparatus according to the second embodiment. FIG. 5 is a front view of an essential part showing the pulley apparatus of FIG. In the figure, a pulley device (rotary body device) 54 is mounted on the car 3. The pulley device 54 is provided on the upper portion of the car 3. In addition, the pulley device 54 includes a first driven pulley (rotating body) 51 and a second driven pulley (rotating body) 52, and first and second driven pulleys 51 and 52 arranged in a horizontal direction at intervals. And an urging device 53 for urging the first driven pulley 51 and the second driven pulley 52 in directions away from each other.

[0044] The first driven pulley 51 is disposed on the outer side of the car 3 with respect to the second driven pulley 52 in the horizontal direction. Further, on the outer peripheral portion of the first driven pulley 51, two groove portions 51a and 51b around which the governor rope 18 is wound are provided. On the outer peripheral portion of the second driven pulley 52, a single groove portion 52a around which the governor rope 18 is wound is provided.

The governor rope 18 is wound around the first driven pulley 51 and the second driven pulley 52 so as to surround the first and second driven pulleys 51 and 52 together. Further, the governor rope 18 is wound around the first driven pulley 51 along the groove 51a from the lower fixing member 20 side, wound around the second driven pulley 52 along the groove 52a, and then into the groove 51b. Along the first driven pulley 51, the second driven pulley 51 is wound again and reaches the upper fixing member 19 side. The governor rope 18 is tensioned by the biasing forces of the springs 21 and 22 and the biasing device 53.

Further, the car 3 is equipped with a first generator 55 and a second generator 56 that generate electric power by the movement of the car 3. The first generator 55 is provided on the rotating shaft of the first driven pulley 51. The second generator 56 is provided on the rotating shaft of the second driven pulley 52.

[0047] The first generator 55 generates electric power according to the speed of the force 3 based on the rotation of the first driven pulley 51. The second generator 56 generates electric power according to the speed of the car 3 based on the rotation of the second driven pulley 52. Each emergency stop device 10 is operated by the electric power generated by the first and second generators 55 and 56 when the speed of the force 3 is abnormal! In this example, the first generator 55 is an AC generator that generates a voltage having a frequency corresponding to the rotation of the first driven pulley 51. Also, it is regarded as an AC generator that generates a voltage with a frequency corresponding to the rotation of the second driven pulley 52.

[0048] A speed governor 57 is mounted on the car 3. The speed governor 57 can be controlled by receiving electric power from the first and second generators 55 and 56. Also, the governor 57 determines whether there is an abnormality in the speed of the basket 3 based on the frequency of the voltage (power information) generated in each of the first and second generators 55, 56, The power generated by the first and second generators 55 and 56 is supplied to each emergency stop device 10 only when the speed of the force 3 is abnormal.

[0049] Further, the speed governor 57 has a first processing unit for determining an abnormality in the speed of the car 3 based on the frequency of the voltage from the first generator 55, and a frequency of the voltage from the second generator 56. When the speed of the car 3 is determined to be abnormal by at least one of the second processing unit and the first and second processing units that determine an abnormality in the speed of the car 3 based on the first and second Generator 55, 56 It has an emergency output section that supplies power to each emergency stop device 10 as much as possible.

[0050] In other words, the speed governor 57 detects the speed of the basket 3 only as a power source for the control operation and uses it as information (car information) to determine whether there is an abnormality in the speed of the force 3 In addition, power from the first and second generators 55 and 56 is supplied. Other configurations are the same as those in the first embodiment.

[0051] Next, the operation will be described. When the first and second driven pulleys 51 and 52 are rotated by the movement of the force 3, power corresponding to the speed of the force 3 is supplied from the first and second generators 55 and 56 to the governing device 57. Is done.

[0052] Thus, in the speed governor 57, whether there is an abnormality in the speed of the car 3 based on the information on the power from each of the first and second generators 55, 56 (in this example, the voltage frequency). Judged.

[0053] When the elevator is operated normally and the speed of the force 3 is normal, In the device 57, the abnormality of the speed of the car 3 is not judged, and the power supply from the speed governor 57 to each emergency stop device 10 is stopped.

[0054] For example, when the speed of the car 3 is abnormally increased due to the breakage of the main rope 9 or the like and the speed control device 57 determines that the speed of the car 3 is abnormal, the first and second generators 55 , 56 is supplied from the governor 57 to each emergency stop device 10. Thereby, each emergency stop device 10 is operated and the movement of the force 3 is stopped.

In such an elevator apparatus, the speed governor 57 acquires the frequency of the voltage from the first and second generators 55 and 56 as power information, and the speed of the car 3 based on the power information. The power from the first and second generators 55 and 56 is supplied to each emergency stop device 10 only when it is determined that the speed of the force 3 is abnormal. Therefore, the speed of the force 3 can be detected without using a dedicated speed detector for detecting the speed of the force 3. As a result, the number of parts can be reduced, and the cost and size can be reduced.

[0056] Further, since the first and second driven pulleys 51, 52 are arranged in the horizontal direction at intervals, the height of the pulley device 54 can be reduced, and the hoistway The dimension in the height direction of 1 can be reduced. As a result, the elevator apparatus can be reduced.

In the above example, the power information for the speed governor 57 to detect the speed of the car 3 is the frequency of the voltage, but the information changes according to the speed of the power 3. If necessary, the voltage can be large. Also, by installing a load such as a resistor in the output part of the generator governor, the current magnitude and frequency can be used as power information. Even in this case, the speed governor 57 can determine whether or not the speed of the car 3 is abnormal, and a dedicated speed detector for detecting the speed of the car 3 can be omitted.

[0058] In each of the above embodiments, the number of driven pulleys rotated according to the speed of the force 3 is two of the first and second driven pulleys. The number of driven pulleys is one. Also good. Even in this case, the speed governor can determine the speed of the car 3 based on the rotation of the driven pulley, and can determine whether or not the speed of the car 3 is abnormal. In this case, the governor rope 18 is wound only on one driven pulley. The governor rope 18 has a spring. Tension is applied by the urging forces of 21 and 22.

[0059] In addition, the number of driven pulleys should be three or more. In this case, the speed governor is provided with three or more processing units corresponding to each driven pulley. Each processing unit determines whether or not the speed of the car 3 is abnormal based on the rotation of the corresponding driven pulley. In addition, the emergency output unit determines that the number of determinations that the speed of the cage 3 is abnormal among the determinations by each processing unit is greater than the number of determinations that the speed of the cage 3 is normal. The electric power from the first and second generators is supplied to each emergency stop device 10. For example, if the number of driven pulleys is three, the speed governor uses the power from the generator when the speed of the car 3 is determined to be abnormal by two or three processing units. Each emergency stop device 10 is supplied. In this way, even if there is an erroneous determination about the rotation of some of the driven pulleys, it is possible to determine the power supply to each emergency stop device 10 by determining the other driven pulleys. It is possible to improve the reliability of the determination by.

[0060] Further, in each of the above-described embodiments, the force in which the governor rope 18 is connected to the upper and lower portions of the hoistway 1 via the springs 21 and 22 only in either the upper or lower portion of the hoistway 1 Alternatively, the governor rope 18 may be connected via a spring. Even in this case, the extension of the governor port 18 can be absorbed by the spring, and the decrease in the magnitude of the frictional force between the driven pulley and the governor rope 18 can be prevented.

[0061] In each of the above embodiments, the pulley device, the emergency stop device, the speed governor, and the back-up circuit may be mounted on the force balancing weight 4 that is mounted only on the car 3. V, shi, force 3 and counterweight 4, even if it is mounted on the slippage.

Claims

The scope of the claims

[1] a generator that generates electric power according to the speed of the lifting body; and

An emergency stop device mounted on the lifting body and operated by the electric power generated by the generator when the speed of the lifting body is abnormal and forcibly braking the lifting body

An elevator apparatus comprising:

[2] The elevator apparatus according to claim 1, wherein the generator is mounted on the lifting body.

[3] A speed detector that generates a signal corresponding to the speed of the lifting body, and

Only when the signal from the speed detector is acquired as lifting body information, the presence / absence of an abnormality in the speed of the lifting body is determined based on the lifting body information, and the speed of the lifting body is determined to be abnormal. A speed control device for supplying the power from the generator to the safety device

The elevator apparatus according to claim 1 or 2, further comprising:

[4] The elevator apparatus according to claim 3, wherein the speed detector is mounted on the lifting body.

[5] Information on the electric power from the generator is obtained as lifting body information, and based on the lifting body information, it is determined whether or not the speed of the lifting body is abnormal, and the speed of the lifting body is abnormal. A speed governor that supplies the power from the generator to the emergency stop device only when it is determined that

The elevator apparatus according to claim 1 or 2, further comprising:

6. The elevator apparatus according to claim 5, wherein the power information is a voltage magnitude.

[7] The generator is designed to generate an alternating voltage,

6. The elevator apparatus according to claim 5, wherein the frequency of the voltage is supplied from the generator to the speed governor as information on the electric power! /.

[8] The apparatus further includes a rotating body device having a rotating body that is rotated according to the speed of the lifting body, and the speed control device acquires the lifting body information based on the rotation of the rotating body. The elevator apparatus according to any one of claims 3 to 7, wherein the elevator apparatus is configured.

[9] The rotating body device includes a plurality of the rotating bodies,

The speed governor individually determines whether there is an abnormality in the speed of the lifting body based on the information of the lifting body due to the rotation of each rotating body, and determines at least! / The power supply from the generator to the emergency stop device is performed when the determination is that the speed of the force is abnormal. Elevator equipment.

[10] The rotating body device includes three or more rotating bodies,

The speed governing device individually determines whether or not the speed of the lifting body is abnormal based on the information of the lifting body due to the rotation of the rotating body, and the speed of the lifting body is abnormal. When the number of determinations is greater than the number of determinations that the speed of the lifting body is normal, the generator power is supplied to the emergency stop device.

The elevator apparatus according to claim 8, wherein the elevator apparatus is V.

[11] The rotating body device urges the rotating body in a direction in which the rotating bodies are separated from each other, and a pair of the rotating bodies on which governor ropes connected to the upper and lower parts of the hoistway are hung. An urging device and mounted on the lifting body,

The governor rope is hung on each rotating body so as to surround each rotating body together,

11. The elevator apparatus according to claim 8, wherein tension is applied to the governor rope by urging the rotating body of the urging apparatus.

12. The elevator apparatus according to claim 11, wherein the rotating bodies are arranged in the horizontal direction at intervals.

[13] The electric governor according to claim 11 or 12, wherein the governor rope is connected to at least one of an upper part and a lower part of the hoistway through an insulator.

£ lLOO / SOOZd / lDd 91 800ΖΪΪ / 900Ζ OAV