EP0787676A1 - Sicherheitseinrichtung - Google Patents

Sicherheitseinrichtung Download PDF

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Publication number
EP0787676A1
EP0787676A1 EP97100407A EP97100407A EP0787676A1 EP 0787676 A1 EP0787676 A1 EP 0787676A1 EP 97100407 A EP97100407 A EP 97100407A EP 97100407 A EP97100407 A EP 97100407A EP 0787676 A1 EP0787676 A1 EP 0787676A1
Authority
EP
European Patent Office
Prior art keywords
safety device
driver
travel
release lever
safety
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Withdrawn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
EP97100407A
Other languages
German (de)
English (en)
French (fr)
Inventor
Karsten Gensicke
Peter Moeri
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.)
Inventio AG
Original Assignee
Inventio AG
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 Inventio AG filed Critical Inventio AG
Publication of EP0787676A1 publication Critical patent/EP0787676A1/de
Withdrawn legal-status Critical Current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
    • B66B5/16—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well
    • B66B5/18—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well and applying frictional retarding forces
    • B66B5/22—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well and applying frictional retarding forces by means of linearly-movable wedges

Definitions

  • Safety device in the form of a safety device with a release device for an elevator car running in guides for the transport of people and / or goods, which stops the elevator car when the permissible driving speed in the up and down directions is exceeded, with a release lever connected to the governor rope is effective in both directions.
  • Safety devices of the type mentioned at the outset have the task of protecting the passengers in an elevator car against any physical injury even if the permissible speed in the up direction, the so-called fall upwards, is protected.
  • a safety device designed for this purpose consists of a safety device on the elevator car that is effective in both directions of travel and a release device consisting of a speed limiter that responds in both directions of rotation, a governor rope with tensioning device and breakage control device, and a release lever on the elevator car connected to the governor rope.
  • European Patent Specification No. 0 440 839 schematically shows a double safety gear with separate or connected brake wedges for both directions of travel.
  • the brake wedges are only provided on one side of the guide rail and are supported on the other side of the guide rail by a passive stop plate when catching.
  • this type of safety gear it must be possible to move the safety gear transversely under load Centering in the catching operation. No solution to this problem is disclosed.
  • the brake wedge of the opposite direction which is not involved in catching, is also actuated in the opposite direction and pushed out of its rest position, which is not desired. It is foreseeable that the constructive design of this device for practical use is likely to lead to a cost-intensive solution.
  • the double catching device according to US 5,096,020 also works with one wedge per direction of travel, but in an opposite arrangement.
  • a common trigger lever engages in driver slots in the catch wedges.
  • this device When the safety gear is triggered, this device must also move laterally until it touches the passive opposing wedge.
  • the transverse displacement under load requires rolling friction for a safe centering function, which means a corresponding additional design effort.
  • a further double catching device is disclosed.
  • the safety wedges arranged on both sides of the guide rail according to FIGS. 6 to 9 are each designed for both directions of travel by having a double bevel on the back in different shapes.
  • the brake wedges When catching in the down direction, the brake wedges are pulled into the catching position using rods and when catching in the up direction, they are pushed into the catching position using the same rods.
  • the structurally not trained device still requires various additives such as e.g. specially designed retaining springs, wedge guides and adjustment devices.
  • the invention is characterized inter alia by characterized in that two known and existing safety devices are arranged in opposite directions to each other for both directions of travel and can be put into operation with the existing release system via additional parts.
  • two driver cross members and two driver plates connected to the existing release shaft are provided for each double safety gear.
  • the driver plates have recesses which have the effect that, during a catching operation, the part of the double catching device which is not required for the existing direction of travel remains mechanically unaffected.
  • the recess in the driver plate preferably has the shape of a circular ring segment.
  • the driver crossbar picks up the tie rods of the brake wedges and establishes the operative connection with the driver plate via the driver bolts.
  • the two safety catches are each arranged in a piece of angled profile, the vertical leg of which serves as a mounting base and the horizontal leg of which serves as a mechanical stop.
  • the release crossbeams are guided by means of bolts and are held in a rest position on the outside of the horizontal leg by means of springs.
  • Fig. 1 an elevator car 8 running in guides 9 and suspended on supporting cables 7 is shown in a shaft (not shown), which has an underside on its underside Safety gear unit on the left 5 and a safety gear unit on the right 6.
  • the elevator car 8 is guided, for example, by means of guide rollers 11.
  • the trigger system for the safety gear units 5, 6 consists of a speed limiter 1, which responds to overspeed in both directions of rotation, and a governor rope 2 with tensioning weight 3.
  • the trigger lever 4 on the right safety gear unit 6 is direct with the governor rope 2 and the right safety gear unit 6 with the left safety gear unit 5 operatively connected via a connecting rod 10.
  • two identical, normal and existing safety devices 13 and 14 are arranged and fastened in the functional opposite direction to each other on the inside of the vertical leg of an upper and a lower angle bracket 24 and 25.
  • the angle brackets 24 and 25 are firmly connected with their vertical legs to a support profile 28 on the cabin side.
  • the safety devices 13 and 14 essentially consist of a wedge box 22 and two safety wedges 19 with tie rods 21 in a conventional arrangement.
  • the lower end face of the upper safety device 13 lies against the inside of the horizontal leg of the upper angle bracket 24 and the upper face of the lower safety device 14 lies against the inside of the horizontal leg of the lower angle bracket 25.
  • the tie rods 19 are each guided in a driving crossbar 18 and in a driving crossbar 17 and screwed to it. By means of this screw connection, the rest position of the brake wedges 19 can be adjusted.
  • the driver cross members 17 and 18 are guided by means of guide bolts 16 and are each pressed in the rest position by means of return springs 15 against the outside of the horizontal leg of the angle brackets 24 and 25.
  • the Carrier traverses 17, 18 in the example shown have two flaps reduced in thickness and slightly protruding from the front, each with an elongated hole, into which the tie rods 21 are guided and by means of two locking nuts each with little play in the vertical direction and screwed in the horizontal direction within the elongated hole.
  • the guide bolts 16 are screwed to the horizontal legs of the angle brackets 24 and 25 and form a parallel, mechanical connection of the two angle brackets 24 and 25.
  • the front ends of the driver crossbars 17, 18 are designed as driver bolts 27, each of which is operatively connected to a driving direction a driver plate 26 stand.
  • the driver plate 26 has the shape of a circular surface segment on its surface towards the outer edge and has a recess 20 as a perforated opening over approximately 90% of the segment angle.
  • the driver plates 26 are arranged on both sides of the driver traverses 17 and 18 and are fixedly connected to a release shaft 23.
  • the trigger shaft 23 in turn carries the release lever 4 at the left end and a connecting lever 12 at the right end, which is articulated to the connecting rod 10 visible in FIG. 1 and thus establishes the operative connection between the catch device unit 6 on the right and the catch device unit 5 on the left
  • Trigger shaft 23 is rotatably mounted in the support profile 28, which is part of the cabin support structure, not shown.
  • the shape of the recess 20 in the driver plate 26 is visible in the side view of FIG. 3.
  • the driving pins 27 penetrate this recess 20 and, with their cylindrical outer surfaces in the rest position, each lie on the upper and lower inner edge of the recess 20 with as little play as possible.
  • the two driver plates 26 have the same angular position relative to one another and to the release lever 4.
  • the shape of the above-mentioned elongated holes in the projecting lobes of the driving crossbars 17 and 18 is visible, as is one with the limiter rope 2 Articulated connection at the radial end of the trigger lever 4. Furthermore, the arrangement of the trigger lever 4, the driver plates 26 on both sides and the connecting lever 12 on the trigger shaft 23 is shown, as well as their mounting in the support profile 28.
  • the catching device Auf 13 or the driving pin 27 of the driving crossbar Auf 18 was not actuated, as a result of which the catching device Auf 13 remains in its functional rest position when catching in the down direction. If, after the cause has been remedied, the activated safety device Ab 14 is released by pulling up the elevator and the speed limiter 1 is also reset to the functional starting position, then the safety device and the elevator are ready for operation again.
  • New are the functionally opposite arrangement of the safety devices 13 and 14, the angle brackets 24 and 25 used for this purpose with the double function of attachment and stop, the driver crossbars 17 and 18 with the driver bolts 27, the guide bolts 16 with the return springs 15 and the driver plates 26. These are listed New parts are functionally integrated in series between known and existing parts and assemblies and have thus led to the solution according to the invention.
  • the driver cross members 17, 18, with the same position of the elongated holes can have a wider shape without projecting tabs. In this sense, modified training that serves the same purpose is also possible for the other new parts.
  • the driver plates 26 can have the shape of V-shaped double levers, or the driver bolts 27 could, as a reversal of the triggering active connection, be formed together as a driver fork 30 and instead of the driver plate 26, a simple lever 29 angled at the front into the driver fork intervene ( Fig. 7 ).

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Maintenance And Inspection Apparatuses For Elevators (AREA)
  • Braking Arrangements (AREA)
EP97100407A 1996-01-31 1997-01-13 Sicherheitseinrichtung Withdrawn EP0787676A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH24296 1996-01-31
CH242/96 1996-01-31

Publications (1)

Publication Number Publication Date
EP0787676A1 true EP0787676A1 (de) 1997-08-06

Family

ID=4182538

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97100407A Withdrawn EP0787676A1 (de) 1996-01-31 1997-01-13 Sicherheitseinrichtung

Country Status (6)

Country Link
US (1) US5950768A (no)
EP (1) EP0787676A1 (no)
JP (1) JPH09208151A (no)
AU (1) AU708452B2 (no)
CA (1) CA2196403A1 (no)
NO (1) NO970402L (no)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2201383T3 (es) * 1997-09-29 2004-03-16 Inventio Ag Paracaidas de freno.
DE19906073C2 (de) * 1999-02-12 2003-03-27 Inventio Ag Vorrichtung zum Verhindern unkontrollierter Beschleunigungen eines Fahrkorbs einer Aufzugsanlage
EP1092670A1 (en) * 1999-10-11 2001-04-18 Mac Puar S.A. Two-way elevator parachute
JP4802373B2 (ja) * 2001-02-15 2011-10-26 フジテック株式会社 エレベータの安全装置
MY135853A (en) * 2003-02-04 2008-07-31 Inventio Ag Safety device for an elevator
ATE401283T1 (de) * 2005-05-09 2008-08-15 Dynatech Dynamics & Technology Fangvorrichtung für eine graduelle bidirektionale sicherheitsvorrichtung
CN101143672B (zh) * 2006-09-13 2010-05-12 上海三菱电梯有限公司 电梯装置
ITMI20091725A1 (it) * 2009-10-08 2011-04-09 Gmv Spa Dispositivo di blocco di sicurezza per cabine di ascensori
CN101920880B (zh) * 2010-08-27 2013-08-21 康力电梯股份有限公司 一种家用电梯限速控制装置
BR112013021886A2 (pt) * 2011-03-09 2016-11-01 Inventio Ag método e dispositivo de teste para testar um sistema de limitação de velocidade de uma instalação de elevador
CN102275793B (zh) * 2011-08-16 2013-04-24 湖南海诺电梯有限公司 一种电梯保护装置
CN102400584B (zh) * 2011-09-08 2014-01-08 杭州西子石川岛停车设备有限公司 立体车库用防坠落装置以及使用该装置的立体车库
CN102502373B (zh) * 2011-11-03 2013-07-31 四川省建元升降机制造有限公司 一种用于施工升降机的双向防坠安全装置
US9637348B2 (en) * 2012-04-16 2017-05-02 Mitsubishi Electric Corporation Elevator apparatus

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0440839A1 (de) 1990-02-06 1991-08-14 Thyssen Aufzüge Gmbh Vorrichtung zur Verhinderung unkontrollierter Bewegungen von Aufzügen
US5096020A (en) 1989-12-14 1992-03-17 Kone Elevator Gmbh Elevator safety apparatus
US5230406A (en) 1991-02-06 1993-07-27 Poon Otto L Safety brake arrangement for elevators
US5301773A (en) * 1992-10-23 1994-04-12 Otis Elevator Company Positive terminal overspeed protection by rail grabbing
EP0613851A1 (en) * 1993-03-05 1994-09-07 Kabushiki Kaisha Toshiba A braking device for an elevator

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2150373A (en) * 1937-07-02 1939-03-14 Otis Elevator Co Elevator safety device
US2274000A (en) * 1941-10-16 1942-02-24 Otis Elevator Co Elevator safety apparatus
US2716467A (en) * 1952-10-07 1955-08-30 Watson Elevator Company Inc Elevator car flexible guide clamp safety
US2719608A (en) * 1952-11-20 1955-10-04 Watson Elevator Company Inc Elevator counterweight guide clamp safety
US3762512A (en) * 1971-10-29 1973-10-02 Us Elevator Corp Elevator rail grab safety apparatus
US5065845A (en) * 1990-09-13 1991-11-19 Pearson David B Speed governor safety device for stopping an elevator car
FI98295C (fi) * 1991-11-18 1997-05-26 Kone Oy Tarraaja

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5096020A (en) 1989-12-14 1992-03-17 Kone Elevator Gmbh Elevator safety apparatus
EP0440839A1 (de) 1990-02-06 1991-08-14 Thyssen Aufzüge Gmbh Vorrichtung zur Verhinderung unkontrollierter Bewegungen von Aufzügen
US5230406A (en) 1991-02-06 1993-07-27 Poon Otto L Safety brake arrangement for elevators
US5301773A (en) * 1992-10-23 1994-04-12 Otis Elevator Company Positive terminal overspeed protection by rail grabbing
EP0613851A1 (en) * 1993-03-05 1994-09-07 Kabushiki Kaisha Toshiba A braking device for an elevator

Also Published As

Publication number Publication date
JPH09208151A (ja) 1997-08-12
CA2196403A1 (en) 1997-08-01
US5950768A (en) 1999-09-14
NO970402L (no) 1997-08-01
AU1238897A (en) 1997-08-07
NO970402D0 (no) 1997-01-30
AU708452B2 (en) 1999-08-05

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