EP0655410B1 - Dispositif automatique de test de sécurité pour ascenseurs hydrauliques - Google Patents

Dispositif automatique de test de sécurité pour ascenseurs hydrauliques Download PDF

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Publication number
EP0655410B1
EP0655410B1 EP94308801A EP94308801A EP0655410B1 EP 0655410 B1 EP0655410 B1 EP 0655410B1 EP 94308801 A EP94308801 A EP 94308801A EP 94308801 A EP94308801 A EP 94308801A EP 0655410 B1 EP0655410 B1 EP 0655410B1
Authority
EP
European Patent Office
Prior art keywords
test assembly
lever
fastening device
rope
abutment
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.)
Expired - Lifetime
Application number
EP94308801A
Other languages
German (de)
English (en)
Other versions
EP0655410A3 (fr
EP0655410A2 (fr
Inventor
Erminio Guaita
Leandre Adifon
Carlo Vailati
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.)
Otis Elevator Co
Original Assignee
Otis Elevator Co
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 Otis Elevator Co filed Critical Otis Elevator Co
Publication of EP0655410A2 publication Critical patent/EP0655410A2/fr
Publication of EP0655410A3 publication Critical patent/EP0655410A3/fr
Application granted granted Critical
Publication of EP0655410B1 publication Critical patent/EP0655410B1/fr
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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
    • B66B5/0087—Devices facilitating maintenance, repair or inspection tasks
    • B66B5/0093—Testing of safety devices
    • 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

Definitions

  • the present invention concerns an assembly to facilitate testing of safety mechanisms in hydraulic elevators.
  • hydraulic elevators can be actuated directly or indirectly.
  • a piston or.pistons are connected to the framework of the car by means of a series of ropes, which are, in turn, sent back over pulleys.
  • a speed governor is used to prevent the rate of descent from exceeding a predetermined value.
  • a slack rope system is provided instead of a governor.
  • a mechanism used along with a rupture valve over the piston, substitutes for the governor.
  • small wheels provided along the running guides of the elevator car are automatically pressed against the running guides, thus stopping the travel of the elevator car.
  • the cars of hydraulic elevators are mounted on a framework consisting of two uprights and a base. On each upright are the slide runners or rollers of the elevator car and a safety plate.
  • the safety plate includes a roller that moves vertically and which, if activated, presses against the guide, stopping the elevator car.
  • Each of the rollers is engaged by a torsion bar that actuates the rollers.
  • the present invention is characterised over DE-A-3232213 in that the means to engage the abutment includes a support on which a first and a second lever are hinged, and wherein in the deactivated position of the device, one end of the first lever is engaged with the abutment means and its opposite end is positioned above one end of the second lever, the means of remote disengagement being connected to the opposite end of the second lever, the two levers being positioned with respect to each other in such a way that, when the means to remotely disengage is acted upon, the second lever rotates, releasing the end of the first lever with which it is engaged, allowing the first lever to rotate and thereby release the abutment means.
  • a test assembly operates to permit movement of a rope by an amount sufficient to activate the elevator's slack rope system.
  • the test assembly preferably includes an attachment strap of one of the ropes which, upon activation of the test assembly, is permitted to slide in relation to a fastening device of the rope. The movement of the rope is an amount at least sufficient to activate the slack rope device.
  • the test assembly further preferably includes a flange carried on the attachment strap above said fastening device.
  • a fastening device 1 is located in the pit of the hoistway. Straps 2 of two ropes 3 are attached to the fastening device. The opposite end of each rope 3 (see Figure 2) is connected to block 4, with a spring positioned around it and compressed between block 4 and plate 6. Blocks 4 are proximate to lever 7. Engagement between blocks 4 and lever 7 causes the activation of the safety device.
  • the safety device is illustrated generically with reference number 8, as it does not form part of the invention.
  • fixed block 9 is mounted on the fastening device 1.
  • a first lever 10, hinged at point 11, and a second lever 12, hinged at point 13, are hinged on the fixed block 9.
  • the first lever 10 is shown in a substantially horizontal position, in the deactivated condition shown in Figure 1, with one of its ends--the front one--engaged with flange 14 positioned over the threaded part 15 of strap 2, above fastening device 1, and with the other end engaged with the upper end of lever 12.
  • the lower end of lever 12, which is found in a substantially vertical position in the deactivated condition of Figure 1, is connected to line 16.
  • Line 16 provides means to activate the test assembly.
  • threaded part 15 extends below fastening device 1 by a much larger amount than the corresponding threaded part 15 of the other strap 2, over which the test assembly is not provided.
  • the threaded part 15 carries spring 17, which is positioned between fastening device 1 and nut and lock nut system 18, screwed to the end of threaded part 15.
  • the extent of threaded part 15 below fastening device 1 is determined so as to allow, as will be more evident later, rope 3 to move at least enough to activate safety device 8.
  • test assembly is realized further in such a way as to be restored automatically.
  • a typical hydraulic elevator has an automatic valve that, when activated, makes the pulleys drop even a little lower.
  • spring 17 can lengthen, bringing flange 14 back to a position in which it can be reengaged by the end of lever 10. In any case, it should be noted that the restoration would occur even in the absence of spring 17, simply by the force of gravity.
  • At least the invention provides a simple, easy to use test assembly for safety testing hydraulic elevators, which does not require long preparation times and that can be used quickly, and which allows the entire test to be conducted without the need to go into the hoistway.

Landscapes

  • Maintenance And Inspection Apparatuses For Elevators (AREA)
  • Types And Forms Of Lifts (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)

Claims (8)

  1. Dispositif d'essai pour faciliter les essais de sécurité dans un ascenseur ayant un dispositif à câble détendu, le dispositif d'essai comprenant :
    un dispositif de fixation (1) pour un câble (3) ;
    des moyens (2, 15) destinés à attacher un câble audit dispositif de fixation (1);
    des moyens de butée (14) montés sur les moyens d'attache (2 ; 15) ;
    des moyens (10) destinés à entrer en prise avec les moyens de butée (14) pour empêcher le mouvement relatif entre les moyens de butée (14) et le dispositif de fixation (1) ; et
    des moyens (16) destinés à dégager à distance les moyens de prise (10) des moyens de butée (14), ce dégagement permettant un déplacement des moyens d'attache (2) par rapport au dispositif de fixation (1) qui est suffisant pour activer le dispositif à câble détendu ;
    caractérisé en ce que les moyens destinés à entrer en prise avec la butée comprennent un support (9) sur lequel sont articulés un premier levier (10) et un deuxième levier (12), et dans lequel, dans la position désactivée du dispositif, une extrémité du premier levier (10) est en prise avec les moyens de butée (14) et son extrémité opposée est positionnée au-dessus d'une extrémité du deuxième levier (12), les moyens de dégagement à distance (16) étant reliés à l'extrémité opposée du deuxième levier (12), les deux leviers (10, 12) étant positionnés l'un par rapport à l'autre de telle manière que, lorsque les moyens de dégagement à distance sont actionnés, le deuxième levier (12) tourne, en libérant l'extrémité du premier levier (10) avec laquelle il est en prise, pour permettre au premier levier (10) de tourner et de libérer ainsi les moyens de butée (14).
  2. Dispositif d'essai selon la revendication 1, comprenant en outre des moyens (19) destinés à empêcher l'activation du dispositif d'essai.
  3. Dispositif d'essai selon la revendication 2, dans lequel les moyens destinés à empêcher l'activation du dispositif d'essai comprennent une goupille de sécurité (19) mise en prise avec les moyens de prise (10).
  4. Dispositif d'essai selon une quelconque des revendications précédentes, dans lequel lesdits moyens de butée comprennent une collerette (14).
  5. Dispositif d'essai selon une quelconque des revendications précédentes, dans lequel lesdits moyens de butée (14) sont agencés au-dessus dudit dispositif de fixation (1).
  6. Dispositif d'essai selon une quelconque des revendications précédentes, dans lequel lesdits moyens d'attache comprennent un collier (2).
  7. Dispositif d'essai selon une quelconque des revendications précédentes, comprenant en outre un ressort de rappel (17) disposé entre le dispositif de fixation et l'extrémité des moyens d'attache.
  8. Dispositif d'essai selon une quelconque des revendications précédentes, dans lequel les moyens destinés à dégager à distance comprennent un câble (16) relié aux moyens (10) destinés à entrer en prise avec les moyens de butée (14).
EP94308801A 1993-11-29 1994-11-29 Dispositif automatique de test de sécurité pour ascenseurs hydrauliques Expired - Lifetime EP0655410B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITRM930793A IT1262462B (it) 1993-11-29 1993-11-29 Dispositivo automatico per prove di sicurezza in ascensori idraulici ad azionamento indiretto.
ITRM930793 1993-11-29

Publications (3)

Publication Number Publication Date
EP0655410A2 EP0655410A2 (fr) 1995-05-31
EP0655410A3 EP0655410A3 (fr) 1995-11-29
EP0655410B1 true EP0655410B1 (fr) 1999-09-08

Family

ID=11402075

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94308801A Expired - Lifetime EP0655410B1 (fr) 1993-11-29 1994-11-29 Dispositif automatique de test de sécurité pour ascenseurs hydrauliques

Country Status (6)

Country Link
EP (1) EP0655410B1 (fr)
JP (1) JPH07196270A (fr)
KR (1) KR100329129B1 (fr)
AT (1) ATE184259T1 (fr)
DE (1) DE69420519T2 (fr)
IT (1) IT1262462B (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI105177B (fi) * 1997-04-14 2000-06-30 Kone Corp Menetelmä ja koestuslaitteisto hissin tarrainlaitetta varten
DE102006027989A1 (de) * 2006-06-14 2007-12-20 Logos-Innovationen Gmbh Hebevorrichtung mit einer Antriebseinheit zum Heben einer Lastaufnahme
CN104310152B (zh) * 2014-09-19 2016-04-27 宁波浩渤工贸有限公司 一种电梯绳索安全紧固装置

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3232213A1 (de) * 1982-08-30 1984-03-01 Oildinamic Aufzugsantriebe GmbH, 8011 Kirchheim Vorrichtung zur ploetzlichen entlastung des seilzugs von seilhydraulik-aufzuegen

Also Published As

Publication number Publication date
KR950013958A (ko) 1995-06-15
KR100329129B1 (ko) 2002-11-22
EP0655410A3 (fr) 1995-11-29
JPH07196270A (ja) 1995-08-01
ITRM930793A1 (it) 1995-05-29
IT1262462B (it) 1996-06-19
EP0655410A2 (fr) 1995-05-31
ATE184259T1 (de) 1999-09-15
DE69420519D1 (de) 1999-10-14
DE69420519T2 (de) 2000-04-13
ITRM930793A0 (it) 1993-11-29

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