EP0872444A2 - Procédure et appareil pour tester un parachute d'ascenseur - Google Patents

Procédure et appareil pour tester un parachute d'ascenseur Download PDF

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Publication number
EP0872444A2
EP0872444A2 EP98106644A EP98106644A EP0872444A2 EP 0872444 A2 EP0872444 A2 EP 0872444A2 EP 98106644 A EP98106644 A EP 98106644A EP 98106644 A EP98106644 A EP 98106644A EP 0872444 A2 EP0872444 A2 EP 0872444A2
Authority
EP
European Patent Office
Prior art keywords
rope
elevator
elevator car
safety gear
shaft
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.)
Withdrawn
Application number
EP98106644A
Other languages
German (de)
English (en)
Other versions
EP0872444A3 (fr
Inventor
Mark Peacock
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.)
Kone Corp
Original Assignee
Kone 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 Kone Corp filed Critical Kone Corp
Publication of EP0872444A2 publication Critical patent/EP0872444A2/fr
Publication of EP0872444A3 publication Critical patent/EP0872444A3/fr
Withdrawn legal-status Critical Current

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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
    • B66B5/12—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions in case of rope or cable slack

Definitions

  • the present invention relates to a procedure as defined in the preamble of claim 1 and to a testing apparatus as defined in the preamble of claim 2 for an elevator safety gear, especially a safety gear activated by the slackening of an elevator rope.
  • An elevator car runs in an elevator shaft along guide rails, guided by roller guides or sliding guides.
  • safety gears fitted e.g. on the elevator car unit and gripping the guide rails in the elevator shaft are used.
  • a safety gear activated on the basis of the slackening of the suspension rope is used.
  • the motive power required for the activation of such a safety gear is taken from a spring in the rope fixture attaching the rope to the elevator car, said spring being loaded by the load applied by the elevator car to the rope fixture.
  • Each rope is provided with a spring.
  • the object of the present invention is to eliminate the drawbacks of prior art and to achieve a completely new type of testing apparatus for the testing of an elevator safety gear.
  • the safety gear is activated by removing the load applied by the elevator rope to the rope fixture in the elevator car. Details of the features of the apparatus of the invention are presented in the claims.
  • the invention makes it possible to simulate a situation where one or more of the ropes is slackened as if the rope were broken or released from its rope fixture.
  • the testing apparatus of the invention allows easier and safer testing of the safety gear.
  • the apparatus of the invention can be mounted on the elevator car unit, in the upper part of it.
  • the apparatus can be fitted to any one of the elevator ropes.
  • Figures 1a and 1b present a testing apparatus mounted on the upper end of a vertical member 1 of the frame of the elevator car unit for the testing of the safety gear.
  • the testing apparatus comprises a frame part 2 fitted on the upper end of the vertical member 1 of the car frame, with a horizontal shaft 3 placed in it.
  • a turnable cam plate 6 placed on the elevator rope 4 with a tightening element 5.
  • the cam plate is in an inclined position, pointing obliquely upward, in a situation before triggering while the rope is straight.
  • a locking ring 7 Placed on the other end of the shaft 3 is a locking ring 7 with a notch 8 in its lower part. In the position depicted by Fig.
  • the notch 8 engages one end of a plate-like lever acting as the trigger 10 of the testing apparatus, said plate-like part being pivoted with a pin 9 in the lower part of the frame 2.
  • the lever Prior to the activation of the apparatus, the lever is in a horizontal position, preventing the cam plate 6 from being turned to a lower position, e.g. to a position as illustrated by Fig. 2, by the rope 4 exerting a downward pull on it.
  • a plate-like triggering stopper 12 is attached to a suitable point on a guide rail 11 in the elevator shaft. When the other end of the lever 10 hits the stopper 12, the apparatus will be activated.
  • the frame of the apparatus consists of a frame plate 13 with box-like parts 14 facing towards the elevator rope 4 fitted to each end of it, the shaft 3 being fitted between the box-like parts, so that the frame part can be fixed to the upper end of the vertical member 1 of the car frame for testing.
  • the stopper 12 comprises a fixing plate 15 by which the stopper can be attached e.g. with screws to the back of the guide rail 11, and an arrester catch 16 bent toward the testing apparatus and comprising a base part oriented in the direction of the lever and a catch part parallel to the fixing plate 15, the lever 10 hitting the catch part when the elevator car is moving.
  • the apparatus is used for testing as follows:
  • One of the elevator ropes 4 which is already held fast in the elevator car by a spring-loaded rope fixture, is connected to the elevator car by means of the testing apparatus.
  • the rope being attached to the elevator car by different parts of it both via the rope fixture and via the testing apparatus, is released from the hoisting drum or from its anchorage immovable relative to the elevator shaft.
  • the rope end is secured but leaving the rope slack.
  • the rope will not support the elevator car, but because the testing apparatus exerts a tightening force on the rope, the rope fixture on the elevator car will still feel that the rope is tensioned.
  • the testing apparatus By means of the testing apparatus, a sufficient force is maintained in the rope fixture of this particular rope to maintain a sufficient load on the spring in the rope fixture to prevent activation of the safety gear even when the rope is loosened so that it does not carry the weight of the elevator car.
  • the apparatus is used to activate the safety gear by releasing the load applied to the rope fixture by the testing apparatus, the safety gear being activated by the motive force released by the removal of the load.
  • the release is effected by driving the elevator car in the down direction and allowing the trigger 10 to hit the stopper 12. This removes the tension applied by the cam 6 to the rope 4 and, via the rope, to the rope fixture in the elevator car.
  • the slack rope can now follow the spring load of the rope fixture and therefore activates the safety gear.
  • the activation is done at a predetermined height in the elevator shaft. Having four freely selectable positions along the shaft 3 corresponding to the rope 4, the apparatus is designed to function regardless of which one of the ropes has been loosened to trigger the safety gear.
  • the triggering mechanism is mounted directly on the top part of the vertical member 1 of the car frame, and the tightening element 5 is attached to the one 4 of the ropes which is to be used in the testing.
  • the cam 6 can be moved to different positions along the shaft 3, so the rope to be used can be freely selected.
  • the elevator is driven from a higher floor towards the floor to be used for the testing.
  • the lever 10 acting as a trigger hits the triggering stopper 12, which is mounted at a predetermined height relative to the top of the frame of the elevator car unit before the car reaches the landing level, the lever 10 will turn up as depicted with a broken line in Fig. 1a, permitting the cam 6 to turn to a horizontal position, which causes the rope 4 to slacken as illustrated by Fig. 2.
  • the safety gear function of the elevator car aroused by rope slackness, now detects the slack rope and activates the safety gear if the latter functions correctly.
  • the rope tension exerted by the cam 6 against the rope fixture in the elevator car preferably exceeds the normal tension, because in this case the rope can be tensioned again after the test, making it easier to fix the loosened rope again to its anchorage in the elevator shaft.
  • Fig. 3 presents a simplified diagram representing a hydraulic elevator with rope suspension.
  • the elevator car 21 is suspended by means of elevator ropes 4.
  • the elevator ropes 4 are attached to the elevator car 21 via springs 24 in the rope fixture 23 on the car.
  • the other ends of the ropes 4 are fixed to an anchorage 27 immovable relative to the elevator shaft.
  • the hydraulic cylinder 22, mounted in the elevator shaft, carries the ropes by means of a diverting pulley 28 moved by the cylinder.
  • the elevator car is provided with a safety gear 26, which is activated by a lever arrangement 25 if the rope 4 becomes slack, in which case the release of the compression of spring 24 or a spring parallel with it will act upon the lever arrangement.

Landscapes

  • Maintenance And Inspection Apparatuses For Elevators (AREA)
  • Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
EP98106644A 1997-04-14 1998-04-09 Procédure et appareil pour tester un parachute d'ascenseur Withdrawn EP0872444A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI971551 1997-04-14
FI971551A FI105177B (fi) 1997-04-14 1997-04-14 Menetelmä ja koestuslaitteisto hissin tarrainlaitetta varten

Publications (2)

Publication Number Publication Date
EP0872444A2 true EP0872444A2 (fr) 1998-10-21
EP0872444A3 EP0872444A3 (fr) 1999-03-31

Family

ID=8548605

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98106644A Withdrawn EP0872444A3 (fr) 1997-04-14 1998-04-09 Procédure et appareil pour tester un parachute d'ascenseur

Country Status (2)

Country Link
EP (1) EP0872444A3 (fr)
FI (1) FI105177B (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005021413A1 (fr) * 2003-09-02 2005-03-10 Kone Corporation Agencement d'engrenage de securite d'ascenseur
US7204964B2 (en) 2002-03-27 2007-04-17 Nissan Motor Co., Ltd. CO oxidizer
WO2018092308A1 (fr) * 2016-11-21 2018-05-24 三菱電機株式会社 Procédé d'inspection pour dispositif d'arrêt d'urgence d'ascenseur

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104781175B (zh) * 2012-11-13 2016-09-14 因温特奥股份公司 具有安全制动器的电梯
CN107176523B (zh) * 2017-07-20 2019-05-14 日立楼宇技术（广州）有限公司 电梯安全钳装置测试台及测试方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE473940C (de) * 1927-07-23 1929-03-25 Otis Aufzugswerke G M B H Einrichtung fuer Fangproben von Aufzuegen
EP0655410A2 (fr) * 1993-11-29 1995-05-31 Otis Elevator Company Dispositif automatique de test de sécurité pour ascenseurs hydrauliques

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE473940C (de) * 1927-07-23 1929-03-25 Otis Aufzugswerke G M B H Einrichtung fuer Fangproben von Aufzuegen
EP0655410A2 (fr) * 1993-11-29 1995-05-31 Otis Elevator Company Dispositif automatique de test de sécurité pour ascenseurs hydrauliques

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7204964B2 (en) 2002-03-27 2007-04-17 Nissan Motor Co., Ltd. CO oxidizer
WO2005021413A1 (fr) * 2003-09-02 2005-03-10 Kone Corporation Agencement d'engrenage de securite d'ascenseur
WO2018092308A1 (fr) * 2016-11-21 2018-05-24 三菱電機株式会社 Procédé d'inspection pour dispositif d'arrêt d'urgence d'ascenseur
CN109952262A (zh) * 2016-11-21 2019-06-28 三菱电机株式会社 电梯的紧急停止装置的检查方法
CN109952262B (zh) * 2016-11-21 2020-06-23 三菱电机株式会社 电梯的紧急停止装置的检查方法

Also Published As

Publication number Publication date
FI971551A (fi) 1998-10-15
FI105177B (fi) 2000-06-30
FI971551A0 (fi) 1997-04-14
EP0872444A3 (fr) 1999-03-31

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