EP1663837B1 - Elevator safety gear arrangement - Google Patents

Elevator safety gear arrangement Download PDF

Info

Publication number
EP1663837B1
EP1663837B1 EP04742137A EP04742137A EP1663837B1 EP 1663837 B1 EP1663837 B1 EP 1663837B1 EP 04742137 A EP04742137 A EP 04742137A EP 04742137 A EP04742137 A EP 04742137A EP 1663837 B1 EP1663837 B1 EP 1663837B1
Authority
EP
European Patent Office
Prior art keywords
safety gear
rope
overspeed governor
safety
elevator
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
EP04742137A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1663837A1 (en
Inventor
Jorma Mustalahti
Esko Aulanko
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 EP1663837A1 publication Critical patent/EP1663837A1/en
Application granted granted Critical
Publication of EP1663837B1 publication Critical patent/EP1663837B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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 an elevator safety gear arrangement as defined in the preamble of claim 1.
  • the speed of the elevator car is monitored during both downward and upward travel by means of an overspeed governor, which, when an overspeed situation occurs, reacts e.g. by activating a safety device called safety gear mounted on the elevator car, which stops the elevator car safely before the car reaches an excessive overspeed. In most cases this happens in a situation where, after the occurrence of a disturbance, the elevator car starts falling downwards at an increasing speed.
  • the overspeed governor is usually a device based on centrifugal force and comprising a rope loop connected to a safety gear mounted on the elevator car, in which loop a rope runs around diverting pulleys of the overspeed governor with the motion of the elevator car. If the elevator car reaches an excessive speed, then the overspeed governor will be locked by the action of centrifugal force, stopping the said rope, with the result that the safety gear is activated and stops the elevator car by gripping an elevator guide rail with a wedge.
  • the overspeed governor rope passes around an overspeed governor rope pulley placed in the upper part of the shaft or in the machine room and runs through the whole length of the shaft to the lower part of the shaft, where the rope passes around a diverting pulley.
  • the rope is tensioned by a counterweight attached to the diverting pulley in the lower part of the shaft and pulling the lower diverting pulley downwards.
  • the rope is fastened to the safety gear mounted on the elevator car, so that the rope runs along with the elevator car.
  • overspeed governor rope counterweights A problem with the use of overspeed governor rope counterweights is the space taken up by the counterweights especially when a limited space is available below the elevator car.
  • the counterweights take up space in the vertical direction, so when the shaft space below the elevator car is low, it is difficult to find room for the counterweights below the overspeed governor diverting pulley, which has to be located substantially below the lower position of the elevator car.
  • a further problem is that, in prior-art solutions based on centrifugal force, the overspeed governor can only be placed in the upper part of the rope loop, which constitutes a limitation of flexibility of design and layout.
  • the US 4,565,264 discloses an elevator safety gear arrangement comprising at least an elevator car moving along guide rails provided with a safety gear and an overspeed governor which is fastened to the safety gear.
  • the second end of the overspeed governor is connected to the safety gear via a tensioning spring.
  • EP 872 444 discloses an apparatus for testing a safety gear. On this behalf the elevator rope is connected to the elevator car by means of a testing apparatus monitoring the rope slackening to trigger the safety gear.
  • the object of the present invention is to overcome the above-mentioned drawbacks and achieve a simple, safe and compact safety gear arrangement in which the overspeed governor can be disposed either in the upper or in the lower end of the shaft and which can also be used as an installation-time safety gear.
  • a further object of the invention is to achieve an economical and versatile safety gear arrangement that can also be used for detecting an elongation or rupture of the overspeed governor rope.
  • the safety gear arrangement of the invention is characterized by what is disclosed in the characterization part of claim 1.
  • Other embodiments of the invention are characterized by what is disclosed in the other claims.
  • the solution of the invention has the advantage that the overspeed governor need not be placed only in the upper part of the shaft or in the machine room, but, depending on the case, the overspeed governor may be located at either the upper or lower end of the overspeed governor rope loop.
  • a further advantage is that no space consuming rope weights for rope tensioning are needed, which is why the solution can be installed in a small space and is therefore very well suited for use in situations where the space above or below the elevator is limited.
  • the solution of the invention is simpler and more economical in structure than prior-art solutions. This is due, among other things, to the fact that the safety gear contactor and the tensioning contactor can be combined.
  • An additional advantage is that the elevator safety gear is capable of gripping when necessary even in cases where the overspeed governor rope is broken or elongated and the overspeed governor would therefore normally be no longer operational in an overspeed situation.
  • Another advantage is that the new safety gear arrangement can also be used during installation as an installation safety gear in combination with a pedal.
  • the figures present an elevator car 1 arranged to travel upwards and downwards along vertical guide rails 2, guided by guides 12.
  • the figure does not show the elevator drive machine or suspension structures, which are inessential to the present invention.
  • the elevator car is provided with a safety gear 3 comprising at least a safety lever 7, whose movement causes a wedge to move in a gripping device housing 13 so that the wedge gets wedged between the gripping device housing 13 and the guide rail 2, thus stopping the elevator car 1.
  • the movement of the safety lever 7 is usually originated by an overspeed governor 4 based on centrifugal force, which in this embodiment has been installed in the lower part of the elevator shaft.
  • the rotating overspeed governor 4 is driven by a rope 6 placed in the elevator shaft and having its first end fastened to the free end of the safety lever 7. From the safety lever 7, the rope 6 goes to the overspeed governor 4 and passes under the diverting pulley of the overspeed governor 4, after which the rope 6 goes upwards and passes around a diverting pulley 5 mounted in the upper part of the elevator shaft and then goes downwards again and is connected by its second end to the safety lever 7, the rope being tensioned by a tensioning spring 8 placed below the safety lever.
  • the overspeed governor rope 6 moves along with the elevator car 1 and the safety lever 7 remains in the normal position.
  • the tensioning spring 8 works like a prior-art counterweight, keeping the rope 6 tight.
  • the safety gear arrangement also comprises a back stop 9 placed below the tensioning spring. If the back stop 9 is disposed at a suitable distance from the spring, the tensioning spring 8 will activate the safety gear 3 even when the rope 6 becomes slack or breaks. In such a situation, the rope 6 will no longer compress the tensioning spring 8 towards the safety lever 7 but the released spring will hit against the stop face of the back stop 9, with the result that the supporting force lifts the safety lever 7 upwards and the wedge of the safety gear 3 is pushed between the gripping device housing 13 and the guide rail 2, stopping the motion of the elevator car.
  • the safety gear 3 is additionally provided with a contactor 10, which is activated in a when the safety gear grips and also in situations where the rope 6 of the overspeed governor 4 becomes slack or breaks.
  • the elevator control system receives information regarding the disturbance and reacts according to the situation, e.g. by switching off the driving power to the elevator.
  • the safety gear 3 also comprises a back stop 11 in the elevator car to support the safety lever 7, which rests on it in a normal situation.
  • the safety gear arrangement of the invention can also be utilized as an installation safety gear at installation time.
  • the brake pedal of the safety gear used during installation is connected by a rod to the safety lever 7, so that when the pedal is pressed down, the safety gear 3 is activated and the falling movement of the elevator car 1 is stopped.
  • the connecting rod is not shown in the figures.
  • the overspeed governor may also be mounted in the upper part of the elevator shaft if this is more sensible in a given situation.
  • the structure of the safety gear 3 may differ from that described above.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Maintenance And Inspection Apparatuses For Elevators (AREA)
  • Types And Forms Of Lifts (AREA)
  • Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
  • Paper (AREA)
  • Insulated Conductors (AREA)
  • Valve Device For Special Equipments (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
  • Lock And Its Accessories (AREA)
EP04742137A 2003-09-02 2004-06-28 Elevator safety gear arrangement Expired - Lifetime EP1663837B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI20031240A FI118763B (fi) 2003-09-02 2003-09-02 Hissin tarraajajärjestely
PCT/FI2004/000394 WO2005021413A1 (en) 2003-09-02 2004-06-28 Elevator safety gear arrangement

Publications (2)

Publication Number Publication Date
EP1663837A1 EP1663837A1 (en) 2006-06-07
EP1663837B1 true EP1663837B1 (en) 2008-10-08

Family

ID=27838914

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04742137A Expired - Lifetime EP1663837B1 (en) 2003-09-02 2004-06-28 Elevator safety gear arrangement

Country Status (5)

Country Link
EP (1) EP1663837B1 (fi)
AT (1) ATE410391T1 (fi)
DE (1) DE602004017026D1 (fi)
FI (1) FI118763B (fi)
WO (1) WO2005021413A1 (fi)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2495205A1 (en) * 2009-10-28 2012-09-05 Mitsubishi Electric Corporation Emergency stop device for elevators
CN103171942A (zh) * 2013-04-07 2013-06-26 上海微频莱机电科技有限公司 一种电梯安全制动装置

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI123730B (fi) * 2006-11-10 2013-10-15 Kone Corp Järjestely hissin nopeudenrajoittimessa
WO2015155854A1 (ja) * 2014-04-09 2015-10-15 三菱電機株式会社 エレベータ装置

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58119573A (ja) * 1982-01-07 1983-07-16 三菱電機株式会社 エレベ−タ装置
ES2173571T3 (es) * 1997-03-07 2002-10-16 Kone Corp Procedimiento y aparato para la instalacion de un ascensor.
FI105177B (fi) * 1997-04-14 2000-06-30 Kone Corp Menetelmä ja koestuslaitteisto hissin tarrainlaitetta varten
AU2002244093A1 (en) * 2002-02-07 2003-09-09 Otis Elevator Company Elevator governor rope tensioning

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2495205A1 (en) * 2009-10-28 2012-09-05 Mitsubishi Electric Corporation Emergency stop device for elevators
EP2495205A4 (en) * 2009-10-28 2014-12-03 Mitsubishi Electric Corp EMERGENCY STOP DEVICE FOR ONE ELEVATOR
CN103171942A (zh) * 2013-04-07 2013-06-26 上海微频莱机电科技有限公司 一种电梯安全制动装置

Also Published As

Publication number Publication date
FI20031240A0 (fi) 2003-09-02
FI118763B (fi) 2008-03-14
WO2005021413A1 (en) 2005-03-10
FI20031240A (fi) 2005-03-03
EP1663837A1 (en) 2006-06-07
DE602004017026D1 (de) 2008-11-20
ATE410391T1 (de) 2008-10-15

Similar Documents

Publication Publication Date Title
KR100956527B1 (ko) 승강기용 안전장치
EP2108609B1 (en) Electronic elevator safety system
EP1739046B1 (en) Emergency stop system of elevator
KR101456403B1 (ko) 엘리베이터 장치
US10093515B2 (en) Elevator apparatus
US20120000731A1 (en) Elevator over-acceleration and over-speed protection system
US20070000734A1 (en) Elevator arrangement
EP3377433B1 (en) Housing assembly for a safety actuation device
EP1900673A1 (en) Tension pulley device for elevator governor rope
EP1927567A1 (en) Elevator device
JPWO2014097373A1 (ja) エレベータ装置
KR20080092376A (ko) 엘리베이터 및 엘리베이터 브레이크
EP2292546A1 (en) Apparatus and method for detecting whether an elevator car has become jammed along its travel path
EP1663837B1 (en) Elevator safety gear arrangement
EP1687228B1 (en) Elevator
US6318506B1 (en) Single rope elevator governor
US7137484B2 (en) Safety system for restraining movement of elevator car when car doors are open
JP2809571B2 (ja) エレベーター用張り車装置
KR101190236B1 (ko) 엘리베이터용 양방향 조속기
US7073632B2 (en) Safety system for restraining movement of elevator car when car doors are open
JPWO2006022015A1 (ja) エレベータ装置
WO2003072479A1 (en) Elevator governor rope tensioning
KR100627540B1 (ko) 엘리베이터 장치
RU2026253C1 (ru) Лифт
CN113498399B (zh) 用于安全钳的触发系统、电梯设备和运行电梯设备的方法

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20060330

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR

DAX Request for extension of the european patent (deleted)
17Q First examination report despatched

Effective date: 20061201

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

REF Corresponds to:

Ref document number: 602004017026

Country of ref document: DE

Date of ref document: 20081120

Kind code of ref document: P

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20081008

NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20081008

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20090119

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20090108

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20081008

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20081008

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20081008

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20090218

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20081008

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20081008

Ref country code: BE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20081008

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20081008

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20090108

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20081008

26N No opposition filed

Effective date: 20090709

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20081008

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090630

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090628

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20090109

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090628

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20090409

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20081008

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20081008

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 13

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 14

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 15

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20180625

Year of fee payment: 15

Ref country code: CH

Payment date: 20180621

Year of fee payment: 15

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20180626

Year of fee payment: 15

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20180622

Year of fee payment: 15

Ref country code: GB

Payment date: 20180620

Year of fee payment: 15

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 602004017026

Country of ref document: DE

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20190628

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190628

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190628

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200101

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190630

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190630

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190630