EP1944262B1 - Geschwindigkeitsbegrenzer für hubvorrichtungen - Google Patents

Geschwindigkeitsbegrenzer für hubvorrichtungen Download PDF

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Publication number
EP1944262B1
EP1944262B1 EP06794053.6A EP06794053A EP1944262B1 EP 1944262 B1 EP1944262 B1 EP 1944262B1 EP 06794053 A EP06794053 A EP 06794053A EP 1944262 B1 EP1944262 B1 EP 1944262B1
Authority
EP
European Patent Office
Prior art keywords
pulley
governing
steering linkage
toothed
overspeed governor
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.)
Not-in-force
Application number
EP06794053.6A
Other languages
English (en)
French (fr)
Other versions
EP1944262A1 (de
EP1944262A4 (de
Inventor
Luis Simal
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.)
Schlosser Luezar & Cvr SL
Original Assignee
Schlosser Luezar & Cvr SL
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 Schlosser Luezar & Cvr SL filed Critical Schlosser Luezar & Cvr SL
Publication of EP1944262A1 publication Critical patent/EP1944262A1/de
Publication of EP1944262A4 publication Critical patent/EP1944262A4/de
Application granted granted Critical
Publication of EP1944262B1 publication Critical patent/EP1944262B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • B66B7/062—Belts
    • 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 refers to a mechanical overspeed governor that activates safety gear used in lifts. It has been conceived and built in order to obtain substantial advantages with respect to other existing systems.
  • Activating the safety gear is mostly done through the usual means, conventional steering linkage and overspeed governor, having to function in both UP and DOWN movements of the lift car.
  • the actuating devices on traditionally used safety gear are based on a governing pulley (1) on which the governing rope (2) engages and which, in its turn, rotates on another diverting or tension pulley (3) functioning as the rope tension system.
  • the overspeed governor is installed at the top part of the lift and the diverting pulley at the lower part or lift pit.
  • the rope is linked to the steering linkage (4) connected to the lift car (5) uniting its two stretches.
  • the governing pulley (1) includes a tripping mechanism or triggers (6) that consist in a centrifugal governor or any other known type.
  • the car (5) the movement of which is lineal, pulls along the governing rope (2), thus making this governing pulley rotate (1), generating a centrifugal force in the triggers (6) that rotate in connection with the pulley in question.
  • These masses or triggers (6) move radially on the pulley (1) to which opening movement a spring (19) puts up resistance to a greater or lesser extent in order to adjust the actuating or tripping speed.
  • synchronization systems consisting in levers, coupling etc. may be installed. They will synchronize the opening movement of the masses.
  • the steering linkage is a mechanism that consists of a central rod (9) which rotates onto holes made either directly onto the car sling or onto bushings installed for this purpose and fixed to them and of one or various levers (10) that transmit the rotation of the rod in a certain movement of the triggering component of the safety gear.
  • the governing rope (2) is connected to a lever (10) of the steering linkage in such a way that when the overspeed governor gets blocked, it makes the lever (10) move upwards or downwards.
  • the steering linkage rod (9) rotates so as to transmit the movement to the lever (10) corresponding to the safety gear situated at the other side of the lift car.
  • overspeed governor rope (2) slides onto the pulleys (1,3) causing friction, wear and pressure on the rope (2) and on the steering linkage. This is difficult to control as these factors depend on the friction coefficient of the rope with the groove of the pulley and on the rope tension.
  • Conventional overspeed governors require either a lot of assembly time or work as they are based on several components that need to be assembled on-site.
  • the governing rope only has one fixed stretch going from the upper part to the lower part of the pit and is tightened by means of springs at both ends.
  • the overspeed governor consists of a conventional governing pulley and a diverting pulley both mounted on the same plane and with a different rotating axis disposed on a supporting structure installed on top of the lift car structure. On top of the component that abuts against the centrifugal mass, some perforations are made with the aim of securing an auxiliary rod or lever.
  • This auxiliary rod joins the ends of the centrifugal masses with either the steering linkage lever or with a connecting rod that functions in connection with the steering linkage rod responsible for simultaneously activating both safety gears arranged at either one side or the other of the lift car.
  • a connecting rod that functions in connection with the steering linkage rod responsible for simultaneously activating both safety gears arranged at either one side or the other of the lift car.
  • the use of the rope is for the activating force of the safety gear to be equally conditioned by the belt tension and the friction coefficients with the resulting difficulty in its control.
  • Document 200101202 does not require ropes but is based on the use of a wheel with a centrifugal system mounted onto the lift car, which rotates onto the guide rail.
  • the centre of this wheel is connected to the steering linkage lever arranged like an articulated quadrangle in which two opposite sides are linked to the moving part of the safety gear and to the wheel respectively.
  • the wheel blocks it stops rotating on the guide rail.
  • the centre of the wheel then initiates an upward or downward movement according to the actuating direction causing the steering linkage lever to rotate thus activating the safety gear.
  • Document US 5052523 is based on the use of a rope and a governing pulley that rotates on the guide rail and also includes connection means to activate the safety gear by means of a rope and a drum. This system is only valid for actuating in one direction due to the use of a rope.
  • the overspeed governor described in document US 5052523 is based on the use of a rope and includes as an option a friction sliding clutch which, by means of a brake, limits the pressure to transmit.
  • This clutch carries out certain normal pressure and, through friction, limits the force to transmit, this force sliding and thus functioning like a brake.
  • this type of clutch eliminates wear of the rope, its efficiency resides in the normal pressure produced between both sides of two discs. It does not have an adjusting system that makes adjustment easy nor does it allow the maintenance of the force when facing small dimensional variations due to wear of the friction components.
  • Another aspect is the volume the clutch occupies which makes its installation in reduced spaces and in the lift car difficult as it is an accessory of the overspeed governor and is not on the same plane as the governing pulley.
  • overspeed governor described in document DE 29922874 U1 uses a rope and also includes a brake sliding clutch in a similar way as the one previously described but it does not include an adjustment system making possible easy adjustment of the force to transmit and which, in turn, allows maintaining the force when facing slight dimensional variations due to wear of the friction components.
  • the overspeed governor in document EP1454867A1 describes an overspeed governor in the lift car that requires levers for the connection to the safety gear.
  • a traction system it uses different possibilities of rigid systems and a version with a toothed zip presenting it as an inconvenient only possible in one coupling point, not allowing to choose the position of the overspeed governor with respect to the component arranged in the lift shaft.
  • the system that makes it possible for the toothed pulley to rotate after blocking is not able to adjust by means of springs.
  • US 5 349 854 discloses an over speed governor for elevators.
  • the main disadvantages of the overspeed governors described above are the connection between the governor rope (2) and the steering linkage (4,9,10) which require the manufacturing of car sling parts made to measure, the size of the overspeed governors with clutch as well as the assembly time necessary to install the pulleys and the ropes, adjusting the rope tension between a maximum and a minimum, etc.
  • the invented device has a new design, which makes it possible to solve the following problems depending on whether its arrangement is in the lift shaft or in the lift car and on the type of assembly and components used:
  • the current invention makes it possible to use a mechanical overspeed governor using a toothed timing belt (11) incorporating an adjustable limiting system (15,16,22) that enables the pulley, on which the timing belt engages, to rotate once the blocking has occurred, limiting the blocking force transmitted to the steering linkage-safety gear system during the actuating process. If its location is in the lift car, the axis of the governing pulley (1) can be used and therefore the overspeed governor on the axis of the steering linkage rod (9), enabling to integrate it into the safety gear so that the assembly of both components becomes easier. All this is extremely simple to achieve and it is easy to manufacture the one package consisting of both components.
  • the overspeed governor is based on two aspects:
  • the overspeed governor object of the invention, consists of a toothed pulley (16) on which a toothed timing belt (11), mounted onto a pulley, engages. It rotates on a hollow tube (14) or fixed axis.
  • a centrifugal or inertial governing system is installed on the pulley (6) like the ones already know technically (of this type of governors as well as of the ones in other sectors).
  • the system which limits the transmitted force to the steering linkage may be set out between the stop (8) of the governing system and the actuating of the steering linkage or on another part, such as for example between the outer toothed pulley (16) and its inner part.
  • tension is not necessary to ensure the safety gear performance. It is enough to make sure the belt (11) is perfectly fastened at both ends, both on the top and on the bottom part.
  • the system is fitted out with one or several diverting pulleys (17).
  • pulleys are positioned on a plate (18) connected to a hollow tube (14) or axis on which the pulley rotates or another part of the car sling or lift shaft, depending on the arrangement needed, being on the same plane as the governing pulley.
  • These pulleys act as guides and as belt guards making it possible to install the overspeed governor independently of the toothed timing belt on both sides of the overspeed governor.
  • a tube or axis (14) is used as a rotation axis (14), on the outer part of which a governing pulley (1) is installed and on its inner part it engages or joins the steering linkage rod (9).
  • the rest of the components such as the stop (8) and the system that limits the force between the pulley and the governing pulley (16,15, 22) also use this tube as their rotation axis.
  • the overspeed governor object of the invention, has a hollow tube (14) connected to a plate (18) in which a hole has been made for the tube to pass through.
  • a governing pulley is installed (1) on top of which a toothed pulley (16) is mounted so that a belt (11) placed in the lift shaft couples onto this pulley.
  • the rotation of the pulley is produced by means of one or several bearings positioned on the outside of the tube.
  • a centrifugal system (6) On one side of the pulley a centrifugal system (6), which moves some masses as a consequence of the rotation of the pulley, is installed.
  • a spring (19) is installed that puts up resistance to this radial movement, which is overcome as a consequence of the centrifugal force.
  • the compensation between the weight of the masses is done through coupling both masses - as if they were two toothed wheels- at the other side of their rotation axis.
  • One option for this system is to have at least one groove or slit (25) in radial direction on the pulley where the timing belt or first part (16) of the adjustable system which limits the force (15) engages and at least one radial drill on the governing pulley or second part (15) of the concentric adjustable system which limits the force with the pulley or first part of the adjustable force-limiting system by placing round-shaped projections (22) and compression springs (26) on this pulley. They oppose the movement of the projections towards the centre as a consequence of the rotation of the first part (16) of the adjustable force-limiting system (15) on the second one (15) as the projections are inserted into the grooves (25) of the pulley.
  • Another option for the pulley rotation system after blocking consists of the following:
  • a disc (21) is installed on the same tube (14) . It has been emptied on the inside in an interior diameter. On its perimetric part there are three radial slanted holes placed on top of the centrifugal masses (6) so that in their radial movement they end up sticking out of the groove of the disc (21), abutting in the part where there is no groove (8) causing the disc (21) to rotate in connection with the pulley.
  • the disc is connected to the steering linkage rod (9) by means of a pin (23) or other system depending on the shape of the steering linkage rod so that its rotation moves the rod (9), causing direct activation without any intermediary safety gear components.
  • fittings or parts (24) are installed that axially join the governing pulley to the blocking disc so that the overspeed governor constitutes a solid block that is mounted on the steering linkage rod (9).
  • a plate (18) may be installed on one end of the tube on which the pulley (1) is mounted.
  • This plate (18) can be the lid of the safety gear.
  • two diverting pulleys (17) are installed vertically (17) to obtain a greater amount of coupled teeth and guide the timing belt in relation to the rest of the components arranged in the lift shaft.
  • the toothed timing belt is fixed to the lift shaft or guide rail at the top and bottom part by means of a tensioning system based on a spring. It is installed in such a way that it can activate electric switches in order to detect possible breakage of the timing belt and thus bringing the lift to stop.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
  • Maintenance And Inspection Apparatuses For Elevators (AREA)
  • Pulleys (AREA)

Claims (1)

  1. nspruch 1: Übergeschwindigkeitsregler für einen Aufzug mit Steuerungs-Zahnriemen (11), folgendes umfassend: eine Kupplung (12,15), die die blockierenden Kräfte begrenzt, eine gezahnte Riemenscheibe (13), in die der Zahnriemen (11) eingreift, die Riemenscheibe dreht auf einer hohlen Röhre (14), ein Zetrifugal- oder Trägheitsgesteuertes Steuerungssystem, das auf der Scheibe (6, 7) angebracht ist, sodass wenn eine bestimmte Drehgeschwindigkeit der Steuerungsscheibe (1, 13) überschritten wird, stößt das Steuerungssystem (6,7) an einen Halt (8), dieser Halt ist konzentrisch bezüglich der Steuerungsscheibe und verbindet die Regler-Koppelung so, dass die Drehung des Halts (8) die Regler-Koppelung (4) dazu bringt, sich durch die Drehung der Regler- Koppelungsstange (9) zu bewegen, sobald die Sicherheitsvorrichtung und Steuerungskoppelung (4) aktiviert sind, ermöglicht die Kupplung (12,15) der Zahnriemenscheibe sich weiter zu drehen, die Kupplung (12,15) ist zwischen dem äußeren gezahnten Rad (16) der Steuerungsscheibe und der Innenseite angebracht, wobei um sicherzustellen, dass die Spannung des Zahnriemens nicht notweindig für die Wirkung der Sicherheitsvorrichtung ist, ist das System mit einer oder mehreren Umlenk-Scheiben (17) ausgestattet, diese Scheiben sind auf einer Platte (18) angebracht, die mit einer hohlen Röhre (14) oder Achse verbunden ist, auf der sich die Scheibe dreht, wobei der Übergeschwindigkeitsregler ist weiter durch die Tatsache definiert ist, dass sie aus einer hohlen Röhre (14) besteht, als eine rotierende Achse auf der äußeren Seite, wobei die Steuerungsscheibe (1) angebracht wird und auf der inneren Seite, an der die Steuerungskoppelungsstange (9) eingreift, der Rest der Komponenten, wie zumm Beispiel der Halt (8) und/oder die Kupplung (12,15), ebenso wird die hohle Röhre als Rotationsachse benutzt, weiterhin dabei durch das Kupplungssystem mit Riemen definiert ist, und der Tatsache, dass die Zahnradfunktionen an den Fahrkorb angeschlossen sind, es besteht kein Gleiten zwischen dem letzteren und dem Steuerungs-Riemen, wodurch ermöglicht wird, durch das Verwenden eines Wertgebers oder Sensors auf der Antriebsscheibe, die genue Position des Fahrkorbs zu kennen.
EP06794053.6A 2005-07-04 2006-06-29 Geschwindigkeitsbegrenzer für hubvorrichtungen Not-in-force EP1944262B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ES200501527U ES1060583Y (es) 2005-07-04 2005-07-04 Limitador de velocidad para aparatos de elevacion
PCT/ES2006/000378 WO2007003671A1 (es) 2005-07-04 2006-06-29 Limitador de velocidad para aparatos de elevación

Publications (3)

Publication Number Publication Date
EP1944262A1 EP1944262A1 (de) 2008-07-16
EP1944262A4 EP1944262A4 (de) 2011-07-20
EP1944262B1 true EP1944262B1 (de) 2017-01-11

Family

ID=35069797

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06794053.6A Not-in-force EP1944262B1 (de) 2005-07-04 2006-06-29 Geschwindigkeitsbegrenzer für hubvorrichtungen

Country Status (3)

Country Link
EP (1) EP1944262B1 (de)
ES (1) ES1060583Y (de)
WO (1) WO2007003671A1 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013193877A (ja) * 2012-03-23 2013-09-30 Hitachi Ltd エレベーター装置
FR3013340B1 (fr) * 2013-11-15 2016-01-01 Sapa Systeme d'ascenseur a equilibrage reduit
EP2913287B1 (de) * 2014-02-26 2018-01-03 Otis Elevator Company Regler zur steuerung der relativen geschwindigkeit eines gehoben objekts zu einem führungselement

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3415343A (en) * 1967-04-18 1968-12-10 Alimak Verken Ab Catch apparatus for the cages of scaffold elevators and the like
DE2821547A1 (de) 1978-05-17 1979-11-22 Ind Aufzuege Gmbh Antrieb fuer geschwindigkeitsbegrenzer und den zugeordneten sicherungsmitteln bei aufzuegen verschiedenster bauart
US5052523A (en) 1991-02-14 1991-10-01 Otis Elevator Company Elevator car-mounted govenor system
US5349854A (en) 1992-05-01 1994-09-27 Otis Elevator Company Elevator speed and position indicating device
DE29922874U1 (de) 1999-11-18 2000-03-16 Bode Aufzuege Gmbh Bongers & D Begrenzerrad für Geschwindigkeitsbegrenzer
JP5155505B2 (ja) * 2000-04-27 2013-03-06 インベンテイオ・アクテイエンゲゼルシヤフト エレベーター乗客の避難用装置
EP1454867B1 (de) 2001-12-11 2012-08-22 Mitsubishi Denki Kabushiki Kaisha Aufzugsgeschwindigkeitsregler
JP2004142858A (ja) 2002-10-23 2004-05-20 Mitsubishi Electric Corp エレベータのかご位置検出装置

Non-Patent Citations (1)

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

Also Published As

Publication number Publication date
ES1060583U (es) 2005-10-01
EP1944262A1 (de) 2008-07-16
EP1944262A4 (de) 2011-07-20
WO2007003671A1 (es) 2007-01-11
ES1060583Y (es) 2006-01-16

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