EP3313767B1 - Safety system for maintenance of a lift or elevator - Google Patents

Safety system for maintenance of a lift or elevator Download PDF

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Publication number
EP3313767B1
EP3313767B1 EP15787024.7A EP15787024A EP3313767B1 EP 3313767 B1 EP3313767 B1 EP 3313767B1 EP 15787024 A EP15787024 A EP 15787024A EP 3313767 B1 EP3313767 B1 EP 3313767B1
Authority
EP
European Patent Office
Prior art keywords
lift
control member
shaft
pit
sensor
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.)
Active
Application number
EP15787024.7A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3313767A1 (en
Inventor
Carlos BONANOMI
Riccardo Andrea COSTA
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.)
Giovenzana International BV
Original Assignee
Giovenzana International BV
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 Giovenzana International BV filed Critical Giovenzana International BV
Publication of EP3313767A1 publication Critical patent/EP3313767A1/en
Application granted granted Critical
Publication of EP3313767B1 publication Critical patent/EP3313767B1/en
Active legal-status Critical Current
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B19/00—Mining-hoist operation
    • 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
    • B66B5/0043—Devices enhancing safety during maintenance
    • 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
    • B66B5/0043—Devices enhancing safety during maintenance
    • B66B5/005—Safety of maintenance personnel
    • 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
    • B66B5/0043—Devices enhancing safety during maintenance
    • B66B5/005—Safety of maintenance personnel
    • B66B5/0056—Safety of maintenance personnel by preventing crushing
    • 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

Definitions

  • the subject matter of the present invention is a safety system for maintenance of a lift or elevator according to the main claim 1.
  • Another subject matter of the invention is a lift or elevator equipped with such device of the main claim 1.
  • a lift moves within a shaft or containment structure which is either of a masonry type or defined by in-sight guides located along a side of the building or structure or an internal portion of the latter.
  • a lift is driven by motors located on an upper section of the lift itself (or “lift cage") or located within a machine compartment present on a top of the lift shaft.
  • the lift shaft also includes a lower section which is more or less hollow and far away from the lower stop position of the lift within its own shaft or containment structure, called lift shaft "pit".
  • a lift's control member is usually present and is used during the usual maintenance which the lift and its driving and guiding parts are periodically submitted to.
  • such member is used by an operator or a serviceman to prevent the lift from being used by third parties during maintenance and to move the lift itself as necessary during the maintenance operation.
  • control member comprises usual control means consisting of push-buttons to move the lift in its shaft as well as means for activating such control means (and for disabling the usual push-button panel inside the lift cage).
  • control means consisting of push-buttons to move the lift in its shaft
  • means for activating such control means and for disabling the usual push-button panel inside the lift cage.
  • an emergency push-button or “mushroom” is also present whose depression results in completely disabling the movement of the lift in the shaft. This in order to prevent the operator from being collided with by a lift unexpectedly operated by third parties during maintenance.
  • a purpose of the present invention is to offer a safety system that always disables the use of the lift whenever a maintenance operation is in progress and there is an operator within the pit of the lift shaft who performs such operation.
  • a purpose or object of the invention is to offer a system of the mentioned type that is automatically set without any specific operator's intervention but displacing the control push-button panel located in the pit with respect to a rest station where such push-button panel is located while normally using the lift (i.e. whenever no maintenance is carried out).
  • Another purpose is to offer a system of the mentioned type that warranties an absolute safety to an operator present in the pit of the lift shaft while performing maintenance.
  • a system comprises a control member 1 of a lift (not shown) suitable for being located within a lower section or pit 2 ( figure 4 ) of a lift shaft 3 (or a similar containment structure).
  • the control member 1 is a push-button panel of a type used by an operator whenever the lift is submitted to a (periodical or extraordinary) maintenance operation and comprises push-buttons 5 for driving the lift, a usual switch 6 (of the respective cam type with dual positive opening contacts), and an emergency push-button 7 whose depression immediately stops the movement of the lift within the shaft 3 whenever, for a reason whatsoever, the lift is driven into motion by third parties, while a maintenance operation is in progress, thus jeopardizing the safety of the operator present in the pit 2.
  • a system according to the invention whose goal is to identify the position of the control member 1 in a rest position (i.e. the presence of such member in said station) where such member is stored by said operator after performing the maintenance operation.
  • said system comprises position (or presence) detector means suitable for detecting the position (or the presence) of the member 1 in the rest station.
  • control member 1 be suitable for cooperating with a sheath 10 integral with a wall 11 of the pit 2 (which might be a vertical wall or an horizontal one), said sheath 10 defining a specific rest station wherein the control member 1 is positioned whenever no maintenance action is performed on the lift.
  • the system according to the invention envisages that the sheath be provided with a presence sensor 13 for sensing the presence of the control member 1 within a pocket 14 of the sheath comprising side walls 15 and 16 and a terminal wall 17 rising up from a bottom wall 18 which is secured to the wall 11.
  • the presence sensor can be of the contact type, for instance an electromechanical contactor associated with anyone of such walls 15 and 18, or be defined by a proximity sensor, for instance a magnetic sensor or an RFID detector or an optical sensor or a similar proximity sensor.
  • the latter two sensors are preferred in that they are less subjected to dust, humidity, or others (which might interfere with their detection action) than an electromechanical contactor.
  • figures 1 and 2 show a proximity sensor 13 of the magnetic type, for instance a Hall or Reed sensor comprising a detector part 22 integral with the member 1 and a ferromagnetic metal part 21 integral with the terminal wall 17 of the sheath 10.
  • the detector part 22 is connected to a control unit 24 (for instance, the usual control unit that controls the movement of the lift) which controls the usual motor 25 of the lift.
  • the detector part 22 of the sensor 13 detects such extraction and informs the control unit 24 accordingly.
  • the latter preferably a microprocessor one, according to a first operational algorithm, intervenes onto the control of the motor 25 so as to prevent its activation (should, for instance, a user go in the lift and operate a push-button panel present therein) as long as such member 1 is out of the sheath 10.
  • the positioning of the control member 1 in the rest station is facilitated so that, after performing maintenance, a safe re-positioning of such member in said station allows the normal use of the lift.
  • the rest station is implemented on a horizontal wall of the pit 2.
  • the part 21 of the sensor 13 is associated with such wall and its detector part 22 is still bound to the control member 1. This applies to both cases of a presence sensor and of a magnetic proximity sensor.
  • the detector part 22 is defined by a mechanical contactor and the part 21 is not present and replaced by the wall 11 of the pit itself.
  • the part 21 of the member 1 upon positioning on the wall 11, makes it possible to detect the latter and consequently the positioning of such member in the rest station. Therefore, the lift can be used in the usual mode.
  • Figure 4 shows a solution similar to that depicted in figure 3 , but applied to a vertical wall.
  • the rest station includes a support 40 for the member 1 (which, in this example, is a shelf, but might even be defined by a hook which the member 1 is connected to).
  • the member 1 which, in this example, is a shelf, but might even be defined by a hook which the member 1 is connected to.
  • control member 1 (or "push-button panel") includes an emergency push-button 7 anyway, simply displacing such member 1 from the rest station triggers a lift safety system which prevents its use whenever an operator (who moved such member from said station) is present in the pit 2. Subsequently, the operator operates the switch 6 so as to safely perform the maintenance operation. Further, thanks to the invention, it is possible not to install one or several fixed emergency stop push-buttons.
  • the invention is easy to implement and to use and can be also applied to lifts already in operation, even for many years.

Landscapes

  • Maintenance And Inspection Apparatuses For Elevators (AREA)
  • Elevator Control (AREA)
EP15787024.7A 2015-06-23 2015-10-12 Safety system for maintenance of a lift or elevator Active EP3313767B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITUB20151609 2015-06-23
PCT/IB2015/057788 WO2016207706A1 (en) 2015-06-23 2015-10-12 Safety system for maintenance of a lift or elevator

Publications (2)

Publication Number Publication Date
EP3313767A1 EP3313767A1 (en) 2018-05-02
EP3313767B1 true EP3313767B1 (en) 2020-05-27

Family

ID=54251601

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15787024.7A Active EP3313767B1 (en) 2015-06-23 2015-10-12 Safety system for maintenance of a lift or elevator

Country Status (7)

Country Link
EP (1) EP3313767B1 (zh)
CN (1) CN107820482B (zh)
BR (1) BR112017027834B1 (zh)
ES (1) ES2802989T3 (zh)
HK (1) HK1247904A1 (zh)
RU (1) RU2018102230A (zh)
WO (1) WO2016207706A1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3817169B1 (en) * 2019-10-28 2022-02-09 KONE Corporation Inspection station

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3730442A1 (en) * 2019-04-26 2020-10-28 KONE Corporation Mobile operating unit, elevator and method

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03195680A (ja) * 1989-12-25 1991-08-27 Hitachi Elevator Eng & Service Co Ltd エレベータの保守運転装置
US5025895A (en) * 1990-01-09 1991-06-25 G.E.C. Holding Corp. Elevator car top intrusion device
JP2694484B2 (ja) * 1991-11-22 1997-12-24 株式会社日立製作所 エレベーターの制御装置
JPH05330753A (ja) * 1992-05-27 1993-12-14 Mitsubishi Electric Corp エレベーターのかご上運転装置
JP3195680B2 (ja) * 1993-02-05 2001-08-06 太平洋工業株式会社 圧縮機の容量制御用コントロールバルブ
JP2007276902A (ja) * 2006-04-03 2007-10-25 Toshiba Elevator Co Ltd エレベータ
CN101596999A (zh) * 2009-04-23 2009-12-09 康力电梯股份有限公司 电梯安全系统
IT1395791B1 (it) * 2009-12-21 2012-10-19 Pizzato Elettrica Srl Pulsantiera per il comando di impianti
JP2011178496A (ja) * 2010-02-26 2011-09-15 Toshiba Elevator Co Ltd エレベータの制御装置
JP2012056691A (ja) * 2010-09-08 2012-03-22 Toshiba Elevator Co Ltd エレベータ
CN203474154U (zh) * 2013-10-08 2014-03-12 桑云香 一种建筑工程用安全升降控制装置
JP2015081193A (ja) * 2013-10-24 2015-04-27 株式会社日立ビルシステム エレベータの安全装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3817169B1 (en) * 2019-10-28 2022-02-09 KONE Corporation Inspection station

Also Published As

Publication number Publication date
BR112017027834B1 (pt) 2021-12-21
BR112017027834A2 (pt) 2018-09-04
RU2018102230A (ru) 2019-07-25
WO2016207706A1 (en) 2016-12-29
CN107820482B (zh) 2020-07-31
HK1247904A1 (zh) 2018-10-05
RU2018102230A3 (zh) 2019-07-25
CN107820482A (zh) 2018-03-20
ES2802989T3 (es) 2021-01-22
EP3313767A1 (en) 2018-05-02

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