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WO2000055085A1 - Dispositif de securite pour ascenseur - Google Patents

Dispositif de securite pour ascenseur Download PDF

Info

Publication number
WO2000055085A1
WO2000055085A1 PCT/JP1999/001325 JP9901325W WO0055085A1 WO 2000055085 A1 WO2000055085 A1 WO 2000055085A1 JP 9901325 W JP9901325 W JP 9901325W WO 0055085 A1 WO0055085 A1 WO 0055085A1
Authority
WO
WIPO (PCT)
Prior art keywords
weight
car
counterweight
governor
hoistway
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP1999/001325
Other languages
English (en)
Japanese (ja)
Inventor
Yasushi Chadani
Masami Yoshikawa
Ad Van Eekelen
Breunis Van De Pol
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to DE69929515T priority Critical patent/DE69929515T2/de
Priority to PCT/JP1999/001325 priority patent/WO2000055085A1/fr
Priority to EP99909205A priority patent/EP1086921B1/fr
Publication of WO2000055085A1 publication Critical patent/WO2000055085A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
    • B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
    • B66B5/04—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions for detecting excessive speed
    • B66B5/044—Mechanical overspeed governors

Definitions

  • the present invention relates to a safety device for a rope-type elevator, and more particularly to a safety device for an elevator that suppresses a rising speed of a car when the car rises at an excessive speed.
  • FIG. 5 is a block diagram showing a conventional elevator as shown in, for example, JP-A-6-15661 and JP-A-6-179585.
  • a machine room 2 is provided above a hoistway 1.
  • a hoist 3 as a driving device is installed.
  • the hoisting machine 3 is provided with a brake 4 for stopping the rotation of the sheave 3a.
  • the main rope 5 is wound around the sheave 3a of the hoisting machine 3.
  • a car 6 is suspended from one end of the main rope 5, and a counterweight 7 is suspended from the other end of the main rope 5.
  • the car 6 and the counterweight 7 are alternately moved up and down in the hoistway 1 by the driving force of the hoisting machine 3.
  • the machine room 2 is provided with a governor 8 for detecting an overspeed of the car 6.
  • a governor rope 9 is wound around the governor 8. Both ends of the governor rope 9 are connected to an emergency stop device 11 provided at the lower part of the car 6, whereby the governor rope 9 is circulated as the car 6 moves up and down.
  • a tension sheave 10 for applying tension to the governor rope 9 is provided.
  • the car-side shock absorber 12 and the counterweight 7 that receive the car 6 when the car 6 descends to the lowest movement position below the movement range during normal operation
  • Each of the weight-side shock absorbers 13 which receives the counterweight 7 when descending to the moving position is provided.
  • the cage 6 and the counterweight 7 are used to drive the hoisting machine 3. It is moved up and down in hoistway 1. If the speed of the car 6 exceeds the rated speed for some reason during the lowering operation of the car 6, the increase in the circulation speed of the governor rope 9 is detected by the governor 8, and the brake 4 operates.
  • the governor brake (not shown) provided in the governor 8 operates to apply a mechanical braking force to the governor rope 9.
  • the safety gear 11 operates. If the car 6 collides with the car side shock absorber 12 before the car 6 is stopped by the emergency stop device 11, the impact is reduced by the car side shock absorber 12.
  • the means for decelerating or stopping the overspeed when the car 6 rises is smaller than the means for decelerating or stopping the overspeed when the car 6 descends. Therefore, improvements for further improving safety are required. Disclosure of the invention
  • the present invention has been made in order to solve the above-described problems, and has an object to provide an all-around safety device capable of improving safety against overspeed when a car is raised.
  • the safety device of the elevator comprises: a hoistway, a car and a counterweight that moves up and down the hoistway, a rope that suspends the car and the counterweight in the hoistway, and a rope.
  • a driving device that raises and lowers the car and the counterweight via a hoistway, and a weight-side shock absorber that is installed in the hoistway and receives the counterweight when the counterweight moves down to the lowest moving position
  • FIG. 3 is an explanatory diagram for explaining the braking force required of the weight governor of FIG. 1
  • FIG. 4 is a flow chart showing an operation when a stop switch is provided on the weight governor.
  • FIG. 5 is a configuration diagram showing one example of a conventional elevator. BEST MODE FOR CARRYING OUT THE INVENTION
  • FIG. 1 is a configuration diagram showing an entire elevator according to an example of an embodiment of the present invention.
  • a machine room 2 is provided above a hoistway 1.
  • a hoist 3 as a driving device is installed in the machine room 2.
  • the hoisting machine 3 is provided with a brake 4 for stopping the rotation of the sheave 3a.
  • the main rope 5 is wound around the sheave 3a of the hoisting machine 3.
  • a car 6 is suspended from one end of the main rope 5, and a counterweight 7 is suspended from the other end of the main rope 5.
  • the car 6 and the counterweight 7 are alternately moved up and down in the hoistway 1 by the driving force of the hoisting machine 3.
  • the machine room 2 is provided with a car-side governor 8 for detecting an overspeed of the car 6.
  • a car-side governor rope 9 is wound around the car-side governor 8. Both ends of the car-side governor rope 9 are connected to an emergency stop device 11 provided at the lower part of the car 6 so that the car-side governor rope 9 is circulated as the car 6 moves up and down. You.
  • a tensioning wheel 10 for applying tension to the car-side governor rope 9 is provided.
  • the car-side shock absorber 12 and the counterweight 7 that receive the car 6 when the car 6 descends to the lowest movement position below the movement range during normal operation
  • Each of the weight-side shock absorbers 13 which receives the counterweight 7 when descending to the moving position is provided.
  • the machine room 2 has substantially the same structure as that of the car speed governor 8 and is provided with an ffi-side governor 21 for detecting an overspeed of the counterweight 7.
  • a tension sheave 24 for applying tension to the weight governor rope 22 is provided.
  • FIG. 2 is a front view showing the weight side governor 21 of FIG.
  • a base 31 is fixed above the hoistway 1.
  • a base 33 rotatable about an axis 32 is supported on the base 31.
  • the sheave 33 is provided with a pair of flyweights 36, 37 which can rotate around shafts 34, 35, respectively.
  • the flyweights 36 and 37 are connected to each other via a link 38.
  • An equilibrium spring 39 is provided between one flyweight 37 and the sheave 33.
  • the flyweights 36 and 37 are rotated about the shafts 34 and 35 against the balance spring 39 by the centrifugal force generated by the rotation of the sheave 33.
  • the base 31 supports a ratchet 41 that can rotate about the shaft 32 independently of the sheave 33.
  • a braking arm 43 rotatable around a shaft 42 is supported on the base 31.
  • the braking arm 43 is provided with a braking piece 44 facing the weight governor rope 22 wound around the sheave 33.
  • One end of an operating rod 45 is rotatably connected to the ratchet 41.
  • a spring shaft 46 penetrating the braking arm 43 is fixed to the other end of the operating rod 45.
  • a spring receiver 47 is passed through the end of the spring shaft 46 opposite to the operation rod 45, and a plurality of nuts 48 are screwed thereto.
  • a compression coil spring 49 is provided between the spring support 47 and the braking arm 43.
  • One fly weight 37 is provided with a latch 37 a that engages with the teeth of the ratchet 41.
  • the detection mechanism in this example has axes 34 and 35, flyweights 36 and 37, links 38, balancing springs 39, and a ratchet 41.
  • the governor brake has a shaft 42, a braking arm 43, a braking piece 44, an operating rod 45, a spring shaft 46, a spring bearing 47, a nut 48 and a compression coil spring 49. ing.
  • the cage-side governor 8 and the weight-side governor 21 have almost the same structure.
  • the cage-side governor 8 further includes a stop switch 51 and an operation member 52 in addition to the weight-side governor 21 as shown by a two-dot chain line in FIG.
  • the stop switch 51 is mounted on the base 31 and outputs a signal for operating the brake 4.
  • the operation member 52 is attached to the flyweight 37, and the stop switch 51 is operated by the rotation of the flyweight 37.
  • the dimension (height) of the top clearance is determined according to the set speed of the weight side shock absorber 13. That is, if the speed at which the counterweight 7 collides with the weight-side shock absorber 13 is equal to or lower than the set speed, the amount of the car 6 to jump up is also within the range of the top clearance, and the car 6 is Does not hit the ceiling.
  • the set speed of the weight side shock absorber 13 is designed in accordance with the rated speed of the elevator every night.
  • the braking force is applied to the weight governor rope 22 by the weight governor 21.
  • the second overspeed is set to be equal to or less than the set speed of the weight side shock absorber 13.
  • the braking of the weight governor rope 22 causes the balancing weight 7 to stop, or the descending speed of the balancing weight 7 is reduced to a speed lower than the set speed of the weight buffer 13. Is done. Therefore, even if the brake 4 is broken or the gear of the hoisting machine 3 is broken, the car 6 is prevented from colliding with the ceiling of the hoistway 1, and safety against overspeed when the car 6 is raised is prevented. The performance is improved.
  • FIG. 3 is an explanatory diagram for explaining the braking force required for the weight side governor 21 of FIG.
  • W 1 is the weight of the car 6
  • W 2 is the weight of the counterweight 7
  • F 1 is the braking force by the weight governor 21
  • ⁇ is the downward acceleration of the counterweight 7.
  • the SI-side governor 21 does not necessarily need to stop the weight-side governor rope 22, and may reduce the speed to the set speed of the weight-side shock absorber 13 or less.
  • the braking force required for the weight side governor 21, that is, the minimum braking force required to decelerate the car 6 and the counterweight 7, depends on the weight of the counterweight 7 and the unloaded state. Only the difference from the weight of car 6 (when F 1 W 2—W 1 is less than 0) c
  • This braking force is the car 6 that descends at an overspeed when the main rope 5 is cut. It is overwhelmingly smaller than the force required to brake the vehicle. Therefore, by using a structure substantially similar to the structure of the car-side governor 8, safety against overspeed when the car is raised can be improved.
  • the traction does not occur when the balancing weight 7 collides with the weight buffer 13 and the weight buffer is not generated. Since the cage 6 is lifted after the container 13 is fully compressed, the lift amount of the cage 6 is within the range of the top clearance.
  • the structure of the weight-side governor 21 showing the weight-side governor 21 without the stop switch 51 and the operating member 52 is replaced by the structure of the car-side governor. It may be the same as 8.
  • the set speed of the stop switch 51 of the weight side governor 21 is slightly higher than that of the car side governor 8 or the output of the stop switch 51 of the weight side governor 21 is invalidated. You can do it.
  • FIG. 4 is a flowchart showing the operation when the stop switch 51 is provided in the weight governor 21.
  • the presence or absence of the output of the first overspeed detection signal from the stop switch 51 of the car side governor 8 is always detected (step SI).
  • the brake 4 of the hoisting machine 3 is operated (step S2).
  • the presence or absence of the output of the overspeed detection signal from the stop switch 51 of the weight side governor 21 is detected (step S3).
  • step S5 The following is mechanically detected by the weight governor 21 (step S5). Then, when the descending speed of the counterweight 7 exceeds the second overspeed, the 31-side governor rope 22 is braked by the weight-side governor 21 as described above.
  • the brake 4 can be operated with the first set value. It can be operated and safety can be further improved.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Maintenance And Inspection Apparatuses For Elevators (AREA)

Abstract

L'invention concerne un dispositif sécurité pour ascenseur à local de machinerie (2), comprenant un limiteur de vitesse (8) côté cabine pour détecter la survitesse d'une cabine (6),et un limiteur de vitesse (21) côté contrepoids pour détecter la survitesse d'un contrepoids (7), un câble (22) de limiteur de vitesse côté contrepoids, enroulé autour dudit limiteur (21), les deux parties d'extrémité dudit câble (22) étant reliées au contrepoids (7). De plus, ledit câble (22) de limiteur de vitesse de contrepoids se déplace selon si le contrepoids (7) doit être monté ou descendu et, lorsque la vitesse d'abaissement du contrepoids (7) dépasse une valeur déterminée, le câble (22) du limiteur de vitesse côté contrepoids est freiné par le limiteur de vitesse (21) côté contrepoids, de sorte que le contrepoids (7) soit freiné.
PCT/JP1999/001325 1999-03-17 1999-03-17 Dispositif de securite pour ascenseur Ceased WO2000055085A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE69929515T DE69929515T2 (de) 1999-03-17 1999-03-17 Aufzugssicherheitseinrichtung
PCT/JP1999/001325 WO2000055085A1 (fr) 1999-03-17 1999-03-17 Dispositif de securite pour ascenseur
EP99909205A EP1086921B1 (fr) 1999-03-17 1999-03-17 Dispositif de securite pour ascenseur

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP1999/001325 WO2000055085A1 (fr) 1999-03-17 1999-03-17 Dispositif de securite pour ascenseur

Publications (1)

Publication Number Publication Date
WO2000055085A1 true WO2000055085A1 (fr) 2000-09-21

Family

ID=14235212

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP1999/001325 Ceased WO2000055085A1 (fr) 1999-03-17 1999-03-17 Dispositif de securite pour ascenseur

Country Status (3)

Country Link
EP (1) EP1086921B1 (fr)
DE (1) DE69929515T2 (fr)
WO (1) WO2000055085A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002120979A (ja) * 2000-10-16 2002-04-23 Mitsubishi Electric Corp エレベータの調速装置
WO2006022015A1 (fr) * 2004-08-27 2006-03-02 Mitsubishi Denki Kabushiki Kaisha Appareil élévateur
JP2009107809A (ja) * 2007-10-31 2009-05-21 Hitachi Ltd エレベーター装置
JP2009263015A (ja) * 2008-04-22 2009-11-12 Hitachi Ltd エレベーター装置
US10501286B2 (en) 2017-05-12 2019-12-10 Otis Elevator Company Simultaneous elevator car and counterweight safety actuation
US11492231B2 (en) * 2016-05-23 2022-11-08 Mitsubishi Electric Corporation Elevator apparatus

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1297465C (zh) * 2001-12-11 2007-01-31 三菱电机株式会社 电梯装置
FI117239B (fi) * 2001-12-27 2006-08-15 Kone Corp Hissin turvalaite
WO2011010990A1 (fr) 2009-07-20 2011-01-27 Otis Elevator Company Système de régulateur pour ascenseur

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5131445A (ja) * 1974-09-11 1976-03-17 Mitsubishi Electric Corp Erebeetasochi
JPS5574979A (en) * 1978-11-28 1980-06-05 Shimizu Construction Co Ltd Elevation device

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5183979A (en) * 1991-07-22 1993-02-02 Otis Elevator Company Elevator governor rope restraint when elevator car moves with car doors open

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5131445A (ja) * 1974-09-11 1976-03-17 Mitsubishi Electric Corp Erebeetasochi
JPS5574979A (en) * 1978-11-28 1980-06-05 Shimizu Construction Co Ltd Elevation device

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP1086921A4 *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002120979A (ja) * 2000-10-16 2002-04-23 Mitsubishi Electric Corp エレベータの調速装置
WO2006022015A1 (fr) * 2004-08-27 2006-03-02 Mitsubishi Denki Kabushiki Kaisha Appareil élévateur
JP2009107809A (ja) * 2007-10-31 2009-05-21 Hitachi Ltd エレベーター装置
JP2009263015A (ja) * 2008-04-22 2009-11-12 Hitachi Ltd エレベーター装置
US11492231B2 (en) * 2016-05-23 2022-11-08 Mitsubishi Electric Corporation Elevator apparatus
US10501286B2 (en) 2017-05-12 2019-12-10 Otis Elevator Company Simultaneous elevator car and counterweight safety actuation

Also Published As

Publication number Publication date
EP1086921B1 (fr) 2006-01-18
DE69929515D1 (de) 2006-04-06
EP1086921A1 (fr) 2001-03-28
DE69929515T2 (de) 2006-09-21
EP1086921A4 (fr) 2002-11-06

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