WO2015144978A1 - Ascenseur muni d'un appareil de surveillance de la tension des moyens de traction - Google Patents

Ascenseur muni d'un appareil de surveillance de la tension des moyens de traction Download PDF

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Publication number
WO2015144978A1
WO2015144978A1 PCT/FI2015/050120 FI2015050120W WO2015144978A1 WO 2015144978 A1 WO2015144978 A1 WO 2015144978A1 FI 2015050120 W FI2015050120 W FI 2015050120W WO 2015144978 A1 WO2015144978 A1 WO 2015144978A1
Authority
WO
WIPO (PCT)
Prior art keywords
elevator
traction means
tautness
monitoring
traction
Prior art date
Application number
PCT/FI2015/050120
Other languages
English (en)
Inventor
Markku Haapaniemi
Matti RÄSÄNEN
Markku HÄIVÄLÄ
Ari Kattainen
Original Assignee
Kone Corporation
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 Corporation filed Critical Kone Corporation
Publication of WO2015144978A1 publication Critical patent/WO2015144978A1/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
    • B66B5/02—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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B11/00—Main component parts of lifts in, or associated with, buildings or other structures
    • B66B11/0065—Roping
    • B66B11/008—Roping with hoisting rope or cable operated by frictional engagement with a winding drum or sheave
    • B66B11/009—Roping with hoisting rope or cable operated by frictional engagement with a winding drum or sheave with separate traction and suspension ropes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B7/00—Other common features of elevators
    • B66B7/06—Arrangements of ropes or cables
    • B66B7/10—Arrangements of ropes or cables for equalising rope or cable tension

Definitions

  • the object of the invention is an elevator, as defined in the preamble of claim 1, said elevator being provided with an apparatus monitoring the tautness of the traction means.
  • the tautness of an elevator traction means e.g. of a belt or rope
  • mechanical belt tensioners e.g. in such a way that the tautness monitoring apparatus is disposed in a tensioning station below the floor of the elevator car, and sudden slackening of a traction means in a situation in which e.g. the traction means breaks is monitored with the monitoring contacts that are in said tensioning station.
  • the traction means is continuously tensioned in steps with a certain force, which tensioning force is monitored mechanically by means of a spring force.
  • a problem in this solution is, inter alia, that in some situations the tensioning force exerted by the tensioning station might become too large with respect to the tensioning needed. This can cause a risk of the traction means breaking and it wears, inter alia, the bearings.
  • the purpose of this invention is to eliminate the aforementioned drawbacks and to achieve an elevator provided with an apparatus electrically monitoring the tautness of the traction means of the elevator, wherein the tensioning force of the traction means can be adjusted in such a way that the traction means can be actively tensioned according to need.
  • Another aim of this invention is to achieve an elevator in which the sudden slackening of the traction means, e.g. as a consequence of breakage of the traction means, is simultaneously monitored with the electrical apparatus monitoring the tautness of the traction means.
  • Yet another aim of the invention is to enable during operation the collection of data about the condition of the traction means, by means of which data, inter alia, the durability of the traction means can be ensured and also a servicing impulse can be given to elevator maintenance in good time, and the lifecycle of the traction means can also be established.
  • the elevator according to the invention said elevator being provided with an apparatus electrically monitoring the tautness of the traction means, 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.
  • inventive embodiments are also discussed in the descriptive section of the present application.
  • inventive content of the application can also be defined differently than in the claims presented below.
  • inventive content may also consist of several separate inventions, especially if the invention is considered in the light of expressions or implicit sub-tasks or from the point of view of advantages or categories of advantages achieved. In this case, some of the attributes contained in the claims below may be superfluous from the point of view of separate inventive concepts.
  • the different details presented in connection with each embodiment can also be applied in other embodiments.
  • at least some of the subordinate claims can, in at least some situations, be deemed to be inventive in their own right.
  • One advantage, among others, of the solution according to the invention is that monitoring of the tautness of a traction means improves and the tautness can be adjusted more precisely than in solutions according to prior art.
  • a further advantage is that the solution according to the invention enables the collection of data about the condition of the traction means during operation, by means of which data, inter alia, the durability of the traction means can be ensured and also a servicing impulse can be given to elevator maintenance in good time.
  • Another advantage is also that the lifecycle of a traction means can be established better than before by means of the aforementioned collection of data during operation.
  • One preferred embodiment of the invention relates to the simultaneous monitoring of more than one belt.
  • the belts are fixed or supported by means of diverting pulleys independently of each other, and when the differences between the tautness of the belts compared to each other are monitored, the slackening or detachment of even a single belt can be conveniently detected.
  • Fig. 1 presents a diagrammatic and simplified side view of one elevator according to the invention and an elevator car in an elevator hoistway
  • Fig. 2 presents a diagrammatic and simplified view of the machine and traction means of the elevator according to Fig. 1 as viewed from above the elevator machine that is in the bottom part of the elevator hoistway, and
  • Fig. 3 presents a diagrammatic and simplified view, as seen from the direction A-A of Fig. 2, of the diverting pulleys and traction means of an elevator machine in the bottom part of the elevator hoistway .
  • Fig. 1 presents a simplified and partially sectioned side view of one elevator according to the invention, wherein both the elevator car 1 and two compensating weights or counterweights 2, hereinafter compensating weights 2, said weights being side-by-side, are suspended with a 1:1 suspension in such a way that the suspension ropes 3 of the elevator car 1 are led to travel from the elevator car 1 via the diverting pulleys 4 that are in the top part of the elevator hoistway to two compensating weights 2 that are disposed side-by-side with each other, to which compensating weights the second ends of the suspension ropes 3 are fixed.
  • the supporting and the moving of the elevator car 1 and of the compensating weights 2 are separated from each other, in which case moving is implemented by means of traction means 7 that are side-by-side, the first ends of which traction means 7 are fixed to their fixing points 9 on the bottom part of the elevator car 1, and the second ends of which are fixed to their fixing points 10 on the bottom part of the compensating weights 2.
  • Each traction means 7 is led from the fixing point 9 of its first end under the bottom of the traction sheave 5 of the elevator machine 6 in the bottom part of the elevator hoistway to the diverting pulley assembly 8, and after passing around the bottom of the diverting pulleys of which assembly each traction means 7 is led to their fixing point 10 of the second end, to the bottom part of the compensating weights 2.
  • the drive motor of the elevator is the elevator machine 6.
  • a tensioning means 9a of the traction means In connection with the fixing point of the first end of a traction means 7 is also a tensioning means 9a of the traction means, the purpose of which tensioning means is to keep the traction means 7 sufficiently taut from the viewpoint of operational functionality.
  • the tensioning means 9a could just as well be only in connection with the fixing point 10 of the second end of the traction means 7 or also at both ends of the traction means 7.
  • the traction means 7 is e.g. a toothed belt or other belt, a rope or a chain, which receives its kinetic energy from the traction sheave 5 by means of shape-locking.
  • the monitoring means 11 monitoring the tautness, and more precisely a reduction - i.e.
  • a slackening - in the tautness, of a traction means 7 is disposed on the shaft of the diverting pulley assembly 8.
  • the monitoring means is preferably electrical and connected to the control system of the elevator.
  • the monitoring means 11 mainly breakage of a traction means 7 and the sudden slackening of the traction means 7 resulting from it, in which case the tautness of the traction means 7 simultaneously changes, is monitored.
  • each traction sheave 5 for each side of the elevator machine 6, said traction sheaves being similar to each other, is fitted onto the shaft 6a of the elevator machine, which shaft extends in the solution according to the example from the elevator machine 6 to both sides of it.
  • On the outer rim of each traction sheave 5 are grooves for two traction sheaves 7 that are side-by-side, e.g. for a first, i.e. inner, traction means 7a and for a second, i.e.
  • the operational brake 6b of the elevator is also on the shaft 6a. In the case according to the example, one operational brake 6b is disposed on each end of the shaft 6a, on different sides of the elevator machine 6.
  • Two diverting pulley assemblies 8 are also disposed in the bottom part of the elevator hoistway to allow the passage of the traction means 7a, 7b from the traction sheaves 5 to the compensating weights 2.
  • Each diverting pulley assembly 8 has a shaft 8c, on which two diverting pulleys are mounted side- by-side on bearings, a first traction means 7a being fitted to be deflected under the first of which diverting pulleys, i.e. the inner diverting pulley 8a, and a second traction means 7b being fitted to be deflected under the second, i.e. outer, diverting pulley 8b.
  • each diverting pulley 8a, 8b can be adapted to rotate while supported on its own shaft and not while supported on the aforementioned shared shaft 8c.
  • the electrical monitoring means 11 monitoring the tautness, more precisely a reduction - i.e. slackening - in the tautness, of a traction means 7 is disposed on the shaft 8c of the diverting pulleys 8a, 8b of the diverting pulley assembly 8.
  • the electrical monitoring means 11, according to the invention, monitoring the tautness of a traction means 7 could just as well more generally be disposed on some other support receiving the rope forces of the traction means 7, wherein the monitoring of the tautness of the traction means 7 is also arranged to be performed as the monitoring of the difference of the support forces of two traction means 7a, 7b that are side- by-side .
  • the monitoring means 11 comprises e.g. two essentially similar sensors, such as pressure sensors, measuring sensor data, i.e. a first pressure sensor 11a, which is disposed on the first end of the shaft 8c, and a second pressure sensor lib, which is disposed on the second end of the shaft 8c.
  • the pressure sensors 11a, lib are connected to the elevator control system, which has means for receiving and processing the pressure notified by the pressure sensors 11a, lib, said pressure being the measuring data, in such a way that the difference in tautness between the traction means 7a and 7b, and e.g. the sudden slackening, e.g. as a result of breakage, of one of the two traction means 7a or 7b, can be deduced from the pressure difference between the pressure sensors 11a, lib.
  • control system of the elevator has means for receiving and processing the measuring data notified by electrical sensors, such as pressure sensors 11a, lib, in such a way that the difference in tautness between the traction means 7a and 7b, and e.g. the sudden slackening, e.g. as a result of breakage, of one of the two traction means 7a or 7b, can be deduced from the difference between the measuring data of the sensors.
  • electrical sensors such as pressure sensors 11a, lib
  • the monitoring means 11 by means of the monitoring means 11 the magnitude of the support force, or a change in the magnitude of the support force, of the shaft 8c of the diverting pulleys 8a, 8b is monitored or observed.
  • the pressure sensors 11a and lib on each end of the shaft 8c make possible the aforementioned monitoring as differential monitoring, but instead of the pressure sensors 11a, lib also other types of sensors can well be used.
  • electrical strain gauges measuring the torsional moment of the shaft 8c are also well suited to the purpose of the invention .
  • the suspension structure of the elevator can be different to what is presented above.
  • the traction means arrangement can in this case be suspended with e.g. a 2:1 suspension, in which case it is possible to use only one traction means per one compensating weight, which traction means is adapted to travel twice via diverting pulleys that are side-by-side in the bottom part of the elevator hoistway.
  • the different parts of the same traction means travel side-by-side below the diverting pulleys that are side-by-side on a shared shaft, so that a similar pressure difference result, or some other type of difference in measuring results, can be obtained as differential monitoring from a shaft shared by the diverting pulleys as in the case of separate traction means.
  • the compensating weights can also be on different sides of the line of travel of the elevator car to each other, and can also be on the same or different sides of the center line of the elevator to each other.

Landscapes

  • Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
  • Maintenance And Inspection Apparatuses For Elevators (AREA)

Abstract

La présente invention concerne un ascenseur équipé d'un appareil (11) de surveillance de la tension des moyens de traction, ledit ascenseur comprenant au moins un système de commande d'ascenseur, une cabine d'ascenseur (1), un ou plusieurs poids de compensation (2) et un ou plusieurs câbles d'ascenseur (3) supportant la cabine d'ascenseur (1) ainsi que chaque poids de compensation (2), et également une machine d'ascenseur (6) comprenant une ou plusieurs poulies de traction (5) transmettant au moyen d'un ou de plusieurs moyens de traction (7) l'énergie cinétique à la fois à la cabine d'ascenseur (1) et à chaque poids de compensation (2), et un ou plusieurs ensembles poulie de compensation (8) pourvu(s) de poulies de compensation (8a, 8b) disposées côte-à-côte. Ledit appareil (11) de surveillance de la tension des moyens de traction (7) est disposé sur le support recevant les forces du câble des moyens de traction (7), par exemple sur l'arbre (8c) des poulies de compensation (8a, 8b) pour surveiller l'amplitude de la force de support des poulies de compensation (8a, 8b).
PCT/FI2015/050120 2014-03-24 2015-02-27 Ascenseur muni d'un appareil de surveillance de la tension des moyens de traction WO2015144978A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI20145270A FI126805B (fi) 2014-03-24 2014-03-24 Vetoelimen kireyttä valvovalla laitteistolla varustettu hissi
FI20145270 2014-03-24

Publications (1)

Publication Number Publication Date
WO2015144978A1 true WO2015144978A1 (fr) 2015-10-01

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PCT/FI2015/050120 WO2015144978A1 (fr) 2014-03-24 2015-02-27 Ascenseur muni d'un appareil de surveillance de la tension des moyens de traction

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FI (1) FI126805B (fr)
WO (1) WO2015144978A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017129852A1 (fr) * 2016-01-25 2017-08-03 Kone Corporation Agencement permettant de tendre un élément de traction d'un ascenseur et de surveiller la tension de l'élément de traction

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1944772A (en) * 1932-09-10 1934-01-23 Westinghouse Elec Elevator Co Elevator compensating rope sheave
WO1998029327A1 (fr) * 1996-12-30 1998-07-09 Kone Corporation Dispositif de cable d'ascenseur
US20120006627A1 (en) * 2010-07-09 2012-01-12 Donato Carparelli Monitoring of support in an elevator installation
WO2013068635A1 (fr) * 2011-11-13 2013-05-16 Kone Corporation Système d'ascenseur
EP2676915A1 (fr) * 2012-06-22 2013-12-25 Kone Corporation Élévateur
CN103626005A (zh) * 2012-08-24 2014-03-12 原志坤 一种单绳缠绕式提升机松绳保护装置

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1944772A (en) * 1932-09-10 1934-01-23 Westinghouse Elec Elevator Co Elevator compensating rope sheave
WO1998029327A1 (fr) * 1996-12-30 1998-07-09 Kone Corporation Dispositif de cable d'ascenseur
US20120006627A1 (en) * 2010-07-09 2012-01-12 Donato Carparelli Monitoring of support in an elevator installation
WO2013068635A1 (fr) * 2011-11-13 2013-05-16 Kone Corporation Système d'ascenseur
EP2676915A1 (fr) * 2012-06-22 2013-12-25 Kone Corporation Élévateur
CN103626005A (zh) * 2012-08-24 2014-03-12 原志坤 一种单绳缠绕式提升机松绳保护装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017129852A1 (fr) * 2016-01-25 2017-08-03 Kone Corporation Agencement permettant de tendre un élément de traction d'un ascenseur et de surveiller la tension de l'élément de traction

Also Published As

Publication number Publication date
FI20145270A (fi) 2015-09-25
FI126805B (fi) 2017-05-31

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