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EP3814265B1 - Lift assembly with a protection screen - Google Patents

Lift assembly with a protection screen Download PDF

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Publication number
EP3814265B1
EP3814265B1 EP19731975.9A EP19731975A EP3814265B1 EP 3814265 B1 EP3814265 B1 EP 3814265B1 EP 19731975 A EP19731975 A EP 19731975A EP 3814265 B1 EP3814265 B1 EP 3814265B1
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EP
European Patent Office
Prior art keywords
counterweight
shaft
protective screen
elevator
elevator system
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Application number
EP19731975.9A
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German (de)
French (fr)
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EP3814265A1 (en
Inventor
Johannes HÄDERER
Michael THÜRIG
Stephan Hess
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Inventio AG
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Inventio AG
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Publication of EP3814265A1 publication Critical patent/EP3814265A1/en
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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
    • B66B5/0043—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
    • B66B17/00—Hoistway equipment
    • B66B17/12—Counterpoises
    • 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

Definitions

  • the invention relates to an elevator system with a protective screen that shields a counterweight.
  • Elevator systems usually include an elevator shaft, an elevator car and a counterweight.
  • the elevator shaft has a shaft head at its upper end and a shaft pit at its lower end.
  • the elevator car and the counterweight are arranged inside the elevator shaft, the counterweight usually being arranged on a shaft wall of the elevator shaft and the elevator car and the counterweight being movable in opposite directions to one another. This means that the counterweight is lowered into the shaft pit along its travel path when the elevator car is moved to an uppermost position within the elevator shaft and vice versa.
  • a lowering of the elevator car or the counterweight can endanger the safety of a service technician located in the shaft pit.
  • a protective screen In order to protect the service technician from the falling counterweight, a protective screen is usually installed, which blocks access to the counterweight travel path.
  • WO 03 08 2722 shows such a protective screen, which is arranged adjacent to the travel path of the counterweight in such a way that a person cannot under any circumstances be injured by the counterweight being moved in the shaft pit.
  • This protective screen has large dimensions and is correspondingly expensive.
  • CN 207 061 584 U and JP 2013 095571 A disclose elevator systems according to the preamble of claim 1.
  • an elevator system with a counterweight that can be moved in an elevator shaft, which counterweight can be provided for weight compensation of an elevator car that can be moved in the opposite direction of the counterweight, and a protective screen that is or can be arranged in a shaft pit of the elevator shaft and has a height section, the height section essentially is aligned parallel to a travel path of the counterweight, with the protective screen for to prevent a person in the shaft pit from entering the travel path of the counterweight, characterized in that the protective screen has a horizontally arranged bend, with an angled section of the protective screen adjoining the bend extending into the projection of the counterweight that is available in the direction of travel.
  • the invention is based on the finding that the largest possible space, which can be occupied by the counterweight along its travel path, has its lowest limit several meters above the bottom of the shaft.
  • this space which is dimensioned as large as possible, therefore also encloses that position of the counterweight which position can be occupied by the counterweight in its lowest position adjacent to at least one buffer device that is maximally compressed.
  • the bottom of the shaft forms the lower boundary of the shaft pit or elevator shaft.
  • the counterweight is not present at any point in time behind an essential lowermost section of the height section, which may be at its lowermost end only a few centimeters from the bottom of the shaft. This means that this lowermost section only prevents a person from entering a space that cannot be directly occupied by the counterweight.
  • the angled section of the protective screen is preferably arranged directly below this said largest possible space.
  • the bend can alternatively be formed with an acute angle or an obtuse angle.
  • the travel of the counterweight is defined in the present description by the entire space that the counterweight can occupy during normal operation of the elevator system plus the space that the counterweight in a fully compressed buffer device occupies when contacting this buffer device.
  • a further development of the elevator installation includes a buffer device arranged or arrangable in the shaft pit to limit the travel path of the counterweight in an emergency situation, the angled section of the protective screen having at least one cutout through which cutout the buffer device protrudes.
  • Such a buffer device is usually arranged standing in the shaft pit in the projection of the counterweight available in the travel direction. This means that the buffer device, which is not maximally compressed, extends from the bottom of the shaft to within the largest possible space that can be occupied by the counterweight along its travel path.
  • the cutout of the angled section of the protective screen enables the use or operation of such a buffer device, which is arranged standing on the shaft floor, for example.
  • the buffer device can be attached to a framework within the pit or to the guide rails.
  • a height section of the protective screen arranged parallel to the travel path of the counterweight has a maintenance cutout, preferably closable with a cover, for inspection and/or maintenance of the buffer device.
  • Such a maintenance cutout or window cutout enables inspection of the components of the elevator system arranged behind the protective screen and maintenance thereof. If necessary, maintenance of other elements of the elevator system, in particular the buffer device or a lower cable device that may be present, is also made possible.
  • the angled portion of the protective screen is a fold or bend.
  • the advantage of such a fold or bend is that the protective screen can be manufactured in a simple manner and is therefore inexpensive.
  • the external dimensions of the angled section of the protective screen cover at least 50% of the area projected by the counterweight in the direction of travel. It is advantageous that a person in the shaft pit cannot get into the travel path of the counterweight by reaching behind the angled section of the protective screen.
  • the travel path of the counterweight is arranged on a shaft wall of the elevator shaft, and the angled section extends up to the shaft wall. Accordingly, increased safety can be achieved for service technicians who carry out maintenance work in the shaft pit.
  • the angled section is preferably spaced at a distance of less than 10 cm or less than 5 cm from the shaft wall. Accordingly, the angled section can be designed to touch the shaft wall.
  • a height section of the protective screen arranged parallel to the travel path of the counterweight extends up to a height of at least 2 m, preferably 2.5 m, above a shaft floor of the shaft pit. In this way it can be ensured that a person in the elevator shaft or in the shaft pit cannot reach or reach beyond the protective screen into the travel path of the counterweight.
  • FIG 1 shows an elevator system 1 with an elevator shaft 2, an elevator car 18 and a counterweight 10.
  • the elevator shaft 2 comprises a shaft head 8 at its upper end and a shaft pit 4 at its lower end and is usually delimited laterally by at least one shaft wall 5.
  • the elevator shaft 2 is delimited by the shaft floor 6.
  • the elevator car 18 is arranged in the elevator shaft 2 such that it can be moved along a main alignment of the elevator shaft 2 .
  • the counterweight 10 can be moved in the opposite direction to the elevator car 18 and is arranged, for example, on the shaft wall 5 .
  • a buffer device 11 can be arranged in the shaft pit 4 below the counterweight 10, so that the travel path of the counterweight 10 is limited in an emergency situation.
  • a protective screen 20 is arranged in the shaft pit 4 in such a way that the travel path of the counterweight 10 is separated from the region of the shaft pit 4 which can be entered by a service technician.
  • the conventional protective screen 20 shown essentially consists of a height section 26 aligned parallel to the travel path of the counterweight 10.
  • the elevator car 18 and the counterweight 10 can be connected by means of a support element 12 .
  • the support element 12 is guided over rollers 14,16.
  • One of these rollers 14, 16 can be designed as a traction sheave coupled to a drive motor for driving the elevator car 18 or the counterweight 10.
  • the elevator car 18 shown is arranged on a top shaft door 19 of the elevator system 1 shown as an example.
  • the counterweight 10 is located in a position arranged in the shaft pit 4 in accordance with the stated ability to move in the opposite direction, with the buffer device 11 being unactuated by the counterweight 10 .
  • the counterweight 10 is preferably spaced apart from the buffer device 11 in the position shown.
  • the figure 2 shows a detail of a shaft pit 4 of a first elevator shaft 2 with a protective screen 20 according to a first embodiment, wherein in figure 3 the side view of the in figure 2 shown elements of the elevator system is shown.
  • FIG. 4 shows a section of a shaft pit 4 of a second elevator shaft 2 with a protective screen 20 according to a second embodiment, with figure 5 the corresponding plan view according to in figure 4 shown section BB is shown.
  • the shaft pits 4 of both according to Figures 2 to 5 Elevator shafts 2 shown are delimited at the bottom by a shaft floor 6 and laterally by a shaft wall 5 .
  • at least one buffer device 11, 11.1, 11.2 is arranged standing on the bottom 6 of the shaft.
  • the buffer device 11, 11.1, 11.2 shown as an example has a base 13, 13.1, 13.2 and a receiving stamp 15.
  • the lower section of the base 13, 13.1, 13.2, which section has a rectangular cross section, can be made of concrete.
  • the receiving stamp 15 is provided for contacting by the counterweight 10 in an emergency situation shown.
  • the figures 2 and 3 shown counterweight 10 its lowest possible positioning. This means that the counterweight 10 is positioned in such a way that the receiving plunger 15 of the buffer device 11 , 11 .
  • Each of the protective screens 20 includes a height section 26, a bend 21 and an angled section 24.
  • the height section 26 extends parallel to the direction of travel of the counterweight 10 and is slightly spaced from the counterweight 10. A correspondingly small spacing means that a service technician cannot enter the space between the height section 26 and the counterweight 10 .
  • the bend 21 is arranged at the lower end of the vertical section 26 .
  • the height section 26 of the protective screen 20 extends from the bend 21 to a height H of, for example, 2.0 m, preferably to a height H of 2.50 m, this height H only being figure 3 is shown or designated.
  • the bend 21 is preferably aligned horizontally and can be produced by edging or bending or comparable methods.
  • An angled section 24 is arranged on the bend 21 , which angled section 24 can be arranged essentially parallel to the shaft base 6 .
  • the angled section 24 can be screwed or welded to the height section 26, for example.
  • the angled sections 24 of the protective screens 20 shown have one or a plurality of cutouts 32, through which cutout 32 or through which cutouts 32 the at least one buffer device 11, 11.1, 11.2 protrudes. Each of these cutouts 32 is assigned to a single buffer device 11, 11.1, 11.2.
  • the wall of the cutouts 32 made in the angled sections 24 can be horizontally spaced from the outer dimensions of the buffer device 11, 11.1, 11.2 in such a way that injury by reaching through between the buffer device 11, 11.1, 11.2 and the angled section 24 is impossible.
  • At least one further cutout (not shown), for example for the passage of a compensation element, can be provided within the angled section 24 .
  • the angled section 24 shown extends from the angled portion 21 to preferably the shaft wall 5, on which shaft wall 5 the counterweight 10 is movably arranged. Accordingly, the angled section 24 is preferably spaced at a distance of less than 10 cm or less than 5 cm from the shaft wall 5 .
  • the protective screen 20, preferably the height section 26, has a maintenance cutout 22 for inspection and/or maintenance of the buffer device 11.
  • a maintenance cutout 22 for example, the buffer device 11, in particular its receiving stamp 15 or switch of this buffer device 11, or the compensation element or a triggering device of the safety brake can be adjusted or serviced.
  • the in the figures 4 and 5 shown angled portion 24 of the protective screen 20 extends in contrast to in the figures 2 and 3 the angled section 24 shown does not reach the shaft wall 5.
  • the counterweight 10 shown has a position within the elevator shaft 2 which corresponds to an uppermost position of the elevator car, not shown, in normal operation. Correspondingly, the counterweight does not contact the buffer device 11 and in particular the receiving stamp 15 .
  • the line 30 shown within the shaft pit 6 therefore corresponds to the lowest possible position of the counterweight 10 in an emergency situation.
  • the largest possible space 30 shown in the top view corresponds to the projection of the counterweight 10 in its direction of travel.
  • the angled section 24 of the protective screen 20 extending in the direction of the shaft wall 5 overlaps this projection of the counterweight 10 by at least 50%. This means that an overlap D of the angled section 24 with respect to the counterweight 10 is at least 50% of the depth C of the counterweight 10 .
  • a percentage overlap, which results from a quotient D by C, is without taking into account an exemplary cutout 32, which cutout 32 is made in the angled section 24 in order to be able to position the buffer device 11 below the counterweight 10.

Landscapes

  • Cage And Drive Apparatuses For Elevators (AREA)

Description

Die Erfindung betrifft eine Aufzugsanlage mit einer ein Gegengewicht abschirmenden Schutzblende.The invention relates to an elevator system with a protective screen that shields a counterweight.

Aufzugsanlagen umfassen üblicherweise einen Aufzugsschacht, eine Aufzugskabine und ein Gegengewicht. Der Aufzugsschacht weist an seinem oberen Ende einen Schachtkopf und an seinem unteren Ende eine Schachtgrube auf. Die Aufzugskabine und das Gegengewicht sind innerhalb des Aufzugsschachtes angeordnet, wobei das Gegengewicht üblicherweise an einer Schachtwand des Aufzugsschachtes angeordnet ist und die Aufzugskabine und das Gegengewicht gegenläufig zueinander verfahrbar sind. Das bedeutet, dass sich das Gegengewicht entlang seines Verfahrweges in die Schachtgrube absenkt, wenn die Aufzugskabine in eine oberste Position innerhalb des Aufzugsschachtes verfahren wird und vice versa. Bei einer Wartung der Aufzugsanlage kann eine solche Absenkung der Aufzugskabine bzw. des Gegengewichtes die Sicherheit eines in der Schachtgrube befindlichen Servicetechnikers gefährden.Elevator systems usually include an elevator shaft, an elevator car and a counterweight. The elevator shaft has a shaft head at its upper end and a shaft pit at its lower end. The elevator car and the counterweight are arranged inside the elevator shaft, the counterweight usually being arranged on a shaft wall of the elevator shaft and the elevator car and the counterweight being movable in opposite directions to one another. This means that the counterweight is lowered into the shaft pit along its travel path when the elevator car is moved to an uppermost position within the elevator shaft and vice versa. During maintenance of the elevator installation, such a lowering of the elevator car or the counterweight can endanger the safety of a service technician located in the shaft pit.

Um den Servicetechniker vor dem herabkommenden Gegengewicht zu schützen, wird üblicherweise eine Schutzblende montiert, die den Zugang in den Verfahrweg des Gegengewichtes versperrt. WO 03 08 2722 zeigt eine solche Schutzblende, welche derart angrenzend an den Verfahrweg des Gegengewichtes angeordnet ist, dass eine Person unter keinen Umständen durch das verfahrene Gegengewicht in der Schachtgrube verletzt werden kann. Nachteilig ist, dass diese Schutzblende hohe Abmessungen hat und entsprechend teuer ist. CN 207 061 584 U und JP 2013 095571 A offenbaren Aufzugsanlagen nach dem Oberbegriff des Anspruchs 1.In order to protect the service technician from the falling counterweight, a protective screen is usually installed, which blocks access to the counterweight travel path. WO 03 08 2722 shows such a protective screen, which is arranged adjacent to the travel path of the counterweight in such a way that a person cannot under any circumstances be injured by the counterweight being moved in the shaft pit. The disadvantage is that this protective screen has large dimensions and is correspondingly expensive. CN 207 061 584 U and JP 2013 095571 A disclose elevator systems according to the preamble of claim 1.

Es ist daher Aufgabe der Erfindung, eine günstigere Schutzblende zu realisieren.It is therefore the object of the invention to realize a less expensive protective screen.

Diese Aufgabe wird gelöst durch eine Aufzugsanlage mit einem in einem Aufzugsschacht verfahrbaren Gegengewicht, welches Gegengewicht für einen Gewichtsausgleich einer gegenläufig des Gegengewichtes verfahrbaren Aufzugskabine vorsehbar ist, und eine in einer Schachtgrube des Aufzugschachtes angeordnete oder anordenbare, einen Höhenabschnitt aufweisende Schutzblende, wobei der Höhenabschnitt im Wesentlichen parallel eines Verfahrweges des Gegengewichtes ausgerichtet ist, wobei die Schutzblende zur Verhinderung eines Eindringens einer in der Schachtgrube befindlichen Person in den Verfahrweg des Gegengewichtes vorgesehen ist, dadurch gekennzeichnet, dass die Schutzblende eine horizontal angeordnete Abwinklung aufweist, wobei sich ein an die Abwinklung anschliessender abgewinkelter Abschnitt der Schutzblende in die in Verfahrrichtung erhältliche Projektion des Gegenwichtes erstreckt.This object is achieved by an elevator system with a counterweight that can be moved in an elevator shaft, which counterweight can be provided for weight compensation of an elevator car that can be moved in the opposite direction of the counterweight, and a protective screen that is or can be arranged in a shaft pit of the elevator shaft and has a height section, the height section essentially is aligned parallel to a travel path of the counterweight, with the protective screen for to prevent a person in the shaft pit from entering the travel path of the counterweight, characterized in that the protective screen has a horizontally arranged bend, with an angled section of the protective screen adjoining the bend extending into the projection of the counterweight that is available in the direction of travel.

Der Erfindung liegt die Erkenntnis zugrunde, dass ein grösstmöglich bemessener Raum, welcher durch das Gegengewicht entlang seines Verfahrweges einnehmbar ist, mehrere Meter oberhalb des Schachtbodens seine unterste Begrenzung aufweist. Insbesondere umschliesst dieser grösstmöglich bemessene Raum demnach auch jene Position des Gegengewichtes, welche Position durch das Gegengewicht in seiner untersten Position angrenzend an mindestens eine maximal gestauchte Puffervorrichtung einnehmbar ist. Der Schachtboden bildet die untere Begrenzung der Schachtgrube bzw. des Aufzugsschachtes.The invention is based on the finding that the largest possible space, which can be occupied by the counterweight along its travel path, has its lowest limit several meters above the bottom of the shaft. In particular, this space, which is dimensioned as large as possible, therefore also encloses that position of the counterweight which position can be occupied by the counterweight in its lowest position adjacent to at least one buffer device that is maximally compressed. The bottom of the shaft forms the lower boundary of the shaft pit or elevator shaft.

Demnach ist hinter einem wesentlichen untersten Abschnitt des gegebenenfalls an seinem untersten Ende lediglich wenige Zentimeter vom Schachtboden beabstandeten Höhenabschnittes zu keinem Zeitpunkt das Gegengewicht vorhanden. Das heisst, dass dieser genannte unterste Abschnitt lediglich verhindert, dass eine Person in einen Raum eindringt, der nicht unmittelbar durch das Gegengewicht eingenommen sein kann.Accordingly, the counterweight is not present at any point in time behind an essential lowermost section of the height section, which may be at its lowermost end only a few centimeters from the bottom of the shaft. This means that this lowermost section only prevents a person from entering a space that cannot be directly occupied by the counterweight.

Um einerseits Material zu sparen und andererseits dennoch ein Eindringen einer in der Schachtgrube befindlichen Person in den Verfahrweg des Gegengewichtes zu verhindern, ist der abgewinkelte Abschnitt der Schutzblende, vorzugsweise unmittelbar, unterhalb dieses genannten grösstmöglich bemessenen Raumes angeordnet. Alternativ zu einer im Wesentlichen rechtwinkligen Abwinklung, welche im Falle eines vertikalen Verfahrweges des Gegengewichtes einen horizontal ausgerichteten abgewinkelten Abschnitt bedingen kann, kann die Abwinklung alternativ spitzwinklig oder stumpfwinklig ausgebildet sein.In order to save material on the one hand and to prevent a person in the shaft pit from entering the travel path of the counterweight on the other hand, the angled section of the protective screen is preferably arranged directly below this said largest possible space. As an alternative to a substantially right-angled bend, which in the case of a vertical displacement path of the counterweight can result in a horizontally oriented angled section, the bend can alternatively be formed with an acute angle or an obtuse angle.

Der Verfahrweg des Gegengewichtes ist in der vorliegenden Beschreibung durch den gesamten Raum definiert, den das Gegengewicht während des Normalbetriebes der Aufzugsanlage einnehmen kann zuzüglich des Raumes, welches das Gegengewicht bei einer vollständig komprimierten Puffervorrichtung bei einer Kontaktierung dieser Puffervorrichtung einnimmt.The travel of the counterweight is defined in the present description by the entire space that the counterweight can occupy during normal operation of the elevator system plus the space that the counterweight in a fully compressed buffer device occupies when contacting this buffer device.

Eine Weiterbildung der Aufzugsanlage umfasst eine in der Schachtgrube angeordnete oder anordenbare Puffervorrichtung zur Begrenzung des Verfahrweges des Gegengewichtes in einer Notfallsituation, wobei der abgewinkelte Abschnitt der Schutzblende mindestens einen Ausschnitt aufweist, durch welchen Ausschnitt die Puffervorrichtung hindurchragt.A further development of the elevator installation includes a buffer device arranged or arrangable in the shaft pit to limit the travel path of the counterweight in an emergency situation, the angled section of the protective screen having at least one cutout through which cutout the buffer device protrudes.

Üblicherweise ist eine solche Puffervorrichtung stehend in der Schachtgrube in der in Verfahrrichtung erhältlichen Projektion des Gegenwichtes angeordnet. Das heisst, dass sich die nicht maximal gestauchte Puffervorrichtung vom Schachtboden bis innerhalb des grösstmöglich bemessenen Raumes, welcher durch das Gegengewicht entlang seines Verfahrweges einnehmbar ist, erstreckt. Der Ausschnitt des abgewinkelten Abschnittes der Schutzblende ermöglicht die Verwendung bzw. den Betrieb einer solchen beispielhaft auf dem Schachtboden stehend angeordneten Puffervorrichtung. Alternativ dazu kann die Puffervorrichtung an einem Gerüst innerhalb der Schachtgrube oder an den Führungsschienen befestigt sein.Such a buffer device is usually arranged standing in the shaft pit in the projection of the counterweight available in the travel direction. This means that the buffer device, which is not maximally compressed, extends from the bottom of the shaft to within the largest possible space that can be occupied by the counterweight along its travel path. The cutout of the angled section of the protective screen enables the use or operation of such a buffer device, which is arranged standing on the shaft floor, for example. Alternatively, the buffer device can be attached to a framework within the pit or to the guide rails.

Bei einer Weiterbildung der Aufzugsanlage weist ein parallel des Verfahrweges des Gegengewichtes angeordneter Höhenabschnitt der Schutzblende einen, vorzugsweise mit einem Deckel verschliessbaren, Wartungsausschnitt zur Inspektion und/oder Wartung der Puffervorrichtung auf.In a further development of the elevator system, a height section of the protective screen arranged parallel to the travel path of the counterweight has a maintenance cutout, preferably closable with a cover, for inspection and/or maintenance of the buffer device.

Ein solcher Wartungsausschnitt bzw. Fensterausschnitt ermöglicht eine Inspektion der hinter der Schutzblende angeordneten Bestandteile der Aufzugsanlage bzw. deren Wartung. Gegebenenfalls ist somit auch eine Wartung weiterer Elemente der Aufzugsanlage, insbesondere der Puffervorrichtung bzw. einer gegebenenfalls vorhandenen Unterseilvorrichtung, ermöglicht.Such a maintenance cutout or window cutout enables inspection of the components of the elevator system arranged behind the protective screen and maintenance thereof. If necessary, maintenance of other elements of the elevator system, in particular the buffer device or a lower cable device that may be present, is also made possible.

Bei einer Weiterbildung der Aufzugsanlage ist die Abwinklung der Schutzblende eine Abkantung oder eine Abbiegung. Vorteilhaft bei einer solchen Abkantung oder einer solchen Abbiegung ist, dass die Schutzblende auf einfache Art hergestellt werden kann und demnach kostengünstig ist.In a further development of the elevator installation, the angled portion of the protective screen is a fold or bend. The advantage of such a fold or bend is that the protective screen can be manufactured in a simple manner and is therefore inexpensive.

Bei einer Weiterbildung der Aufzugsanlage decken die Aussenabmessungen des abgewinkelten Abschnittes der Schutzblende mindestens 50% der durch das Gegengewicht in Verfahrrichtung projizierten Fläche ab. Vorteilhaft ist, dass eine in der Schachtgrube befindliche Person durch Hintergreifen des abgewinkelten Abschnittes der Schutzblende demnach nicht in den Verfahrweg des Gegengewichtes gelangen kann.In a further development of the elevator system, the external dimensions of the angled section of the protective screen cover at least 50% of the area projected by the counterweight in the direction of travel. It is advantageous that a person in the shaft pit cannot get into the travel path of the counterweight by reaching behind the angled section of the protective screen.

Bei einer Weiterbildung der Aufzugsanlage ist der Verfahrweg des Gegengewichtes an einer Schachtwand des Aufzugsschachtes angeordnet, und der abgewinkelte Abschnitt erstreckt sich bis zu der Schachtwand. Entsprechend kann eine erhöhte Sicherheit für Servicetechniker erreicht werden, welche in der Schachtgrube Wartungsarbeiten durchführen. Vorzugsweise ist der abgewinkelte Abschnitt mit einem Abstand kleiner 10 cm oder kleiner 5 cm zur Schachtwand beabstandet. Demnach kann der abgewinkelte Abschnitt die Schachtwand berührend ausgebildet sein.In a further development of the elevator system, the travel path of the counterweight is arranged on a shaft wall of the elevator shaft, and the angled section extends up to the shaft wall. Accordingly, increased safety can be achieved for service technicians who carry out maintenance work in the shaft pit. The angled section is preferably spaced at a distance of less than 10 cm or less than 5 cm from the shaft wall. Accordingly, the angled section can be designed to touch the shaft wall.

Bei einer Weiterbildung der Aufzugsanlage erstreckt sich ein bzw. der parallel des Verfahrweges des Gegengewichtes angeordneter Höhenabschnitt der Schutzblende bis zu einer Höhe von mindestens 2 m, vorzugsweise 2.5 m über einem Schachtboden der Schachtgrube. Derart kann sichergestellt werden, dass eine im Aufzugsschacht bzw. in der Schachtgrube befindliche Person nicht über die Schutzblende hinweg in den Verfahrweg des Gegengewichtes gelangen bzw. greifen kann.In a further development of the elevator system, a height section of the protective screen arranged parallel to the travel path of the counterweight extends up to a height of at least 2 m, preferably 2.5 m, above a shaft floor of the shaft pit. In this way it can be ensured that a person in the elevator shaft or in the shaft pit cannot reach or reach beyond the protective screen into the travel path of the counterweight.

Im Folgenden wird die Erfindung anhand von Figuren näher erläutert. Es zeigen:

Figur 1:
eine Aufzugsanlage mit einer in einer Schachtgrube angeordneten Schutzblende gemäß einer vorbekannten Ausführungsform;
Figur 2:
eine in einer Schachtgrube angeordnete Schutzblende gemäss einer ersten Ausführungsform;
Figur 3:
eine Seitenansicht der in Figur 2 gezeigten Schutzblende mit einem an eine Puffervorrichtung angrenzenden Gegengewicht;
Fig. 4:
eine in einer Schachtgrube angeordnete Schutzblende gemäss einer zweiten Ausführungsform; und
Fig. 5:
eine Draufsicht der in Figur 4 gezeigten Schutzblende.
The invention is explained in more detail below with reference to figures. Show it:
Figure 1:
an elevator system with a protective screen arranged in a shaft pit according to a previously known embodiment;
Figure 2:
a protective screen arranged in a shaft pit according to a first embodiment;
Figure 3:
a side view of the in figure 2 shown protective screen with a counterweight adjacent to a buffer device;
Figure 4:
a protective screen arranged in a shaft pit according to a second embodiment; and
Figure 5:
a top view of the in figure 4 protective shield shown.

Figur 1 zeigt eine Aufzugsanlage 1 mit einem Aufzugsschacht 2, einer Aufzugskabine 18 und einem Gegengewicht 10. Der Aufzugsschacht 2 umfasst an seinem oberen Ende einen Schachtkopf 8 und an seinem unteren Ende eine Schachtgrube 4 und ist seitlich üblicherweise durch mindestens eine Schachtwand 5 begrenzt. In der Schachtgrube 4 ist der Aufzugsschacht 2 durch den Schachtboden 6 begrenzt. Die Aufzugskabine 18 ist im Aufzugsschacht 2 entlang einer Hauptausrichtung des Aufzugsschachtes 2 verfahrbar angeordnet. Das Gegengewicht 10 ist gegenläufig zur Aufzugskabine 18 verfahrbar und beispielhaft an der Schachtwand 5 angeordnet. Eine Puffervorrichtung 11 kann in der Schachtgrube 4 unterhalb des Gegengewichtes 10 angeordnet sein, so dass der Verfahrweg des Gegengewichtes 10 in einer Notfallsituation begrenzt ist. figure 1 shows an elevator system 1 with an elevator shaft 2, an elevator car 18 and a counterweight 10. The elevator shaft 2 comprises a shaft head 8 at its upper end and a shaft pit 4 at its lower end and is usually delimited laterally by at least one shaft wall 5. In the shaft pit 4, the elevator shaft 2 is delimited by the shaft floor 6. The elevator car 18 is arranged in the elevator shaft 2 such that it can be moved along a main alignment of the elevator shaft 2 . The counterweight 10 can be moved in the opposite direction to the elevator car 18 and is arranged, for example, on the shaft wall 5 . A buffer device 11 can be arranged in the shaft pit 4 below the counterweight 10, so that the travel path of the counterweight 10 is limited in an emergency situation.

In der Schachtgrube 4 ist eine Schutzblende 20 derart angeordnet, dass der Verfahrweg des Gegengewichtes 10 vom Bereich der Schachtgrube 4, welcher durch einen Servicetechniker begehbar ist, abgetrennt ist. Die gezeigte herkömmliche Schutzblende 20 besteht im Wesentlichen aus einem parallel des Verfahrweges des Gegengewichtes 10 ausgerichteten Höhenabschnitt 26.A protective screen 20 is arranged in the shaft pit 4 in such a way that the travel path of the counterweight 10 is separated from the region of the shaft pit 4 which can be entered by a service technician. The conventional protective screen 20 shown essentially consists of a height section 26 aligned parallel to the travel path of the counterweight 10.

Die Aufzugskabine 18 und das Gegengewicht 10 können mittels eines Tragelementes 12 verbunden sein. Das Tragelement 12 ist über Rollen 14, 16 geführt. Eine dieser Rollen 14, 16 kann als eine mit einem Antriebsmotor gekoppelte Treibscheibe zum Antrieb der Aufzugskabine 18 bzw. des Gegengewichtes 10 ausgeführt sein.The elevator car 18 and the counterweight 10 can be connected by means of a support element 12 . The support element 12 is guided over rollers 14,16. One of these rollers 14, 16 can be designed as a traction sheave coupled to a drive motor for driving the elevator car 18 or the counterweight 10.

Die in Figur 1 gezeigte Aufzugskabine 18 ist an einer obersten beispielhaft gezeigten Schachttür 19 der Aufzugsanlage 1 angeordnet. Entsprechend der genannten gegenläufigen Verfahrbarkeit befindet sich das Gegengewicht 10 in einer in der Schachtgrube 4 angeordneten Position, wobei die Puffervorrichtung 11 durch das Gegengewicht 10 unbetätigt ist. Vorzugsweise ist das Gegengewicht 10 in der gezeigten Positionierung von der Puffervorrichtung 11 beabstandet.In the figure 1 The elevator car 18 shown is arranged on a top shaft door 19 of the elevator system 1 shown as an example. The counterweight 10 is located in a position arranged in the shaft pit 4 in accordance with the stated ability to move in the opposite direction, with the buffer device 11 being unactuated by the counterweight 10 . The counterweight 10 is preferably spaced apart from the buffer device 11 in the position shown.

Die Figur 2 zeigt einen Ausschnitt einer Schachtgrube 4 eines ersten Aufzugsschachtes 2 mit einer Schutzblende 20 gemäss einer ersten Ausführungsform, wobei in Figur 3 die Seitenansicht der in Figur 2 gezeigten Elemente der Aufzugsanlage dargestellt ist. Die Figur 4 zeigt einen Ausschnitt einer Schachtgrube 4 eines zweiten Aufzugsschachtes 2 mit einer Schutzblende 20 gemäss einer zweiten Ausführungsform, wobei in Figur 5 die entsprechende Draufsicht gemäss dem in Figur 4 dargestellten Schnitt B-B dargestellt ist. Die Schachtgruben 4 beider gemäss den Figuren 2 bis 5 gezeigten Aufzugsschächte 2 sind nach unten durch einen Schachtboden 6 und seitwärts durch eine Schachtwand 5 begrenzt. Beispielhaft ist jeweils mindestens eine Puffervorrichtung 11, 11.1, 11.2 stehend auf dem Schachtboden 6 angeordnet. Die beispielhaft gezeigte Puffervorrichtung 11, 11.1, 11.2 weist einen Sockel 13, 13.1, 13.2 und einen Aufnahmestempel 15 auf. Der untere einen rechteckigen Querschnitt aufweisende Abschnitt des Sockels 13, 13.1, 13.2 kann aus Beton gefertigt sein. Der Aufnahmestempel 15 ist für eine Kontaktierung durch das Gegengewicht 10 in einer gezeigten Notfallsituation vorgesehen.the figure 2 shows a detail of a shaft pit 4 of a first elevator shaft 2 with a protective screen 20 according to a first embodiment, wherein in figure 3 the side view of the in figure 2 shown elements of the elevator system is shown. FIG. 4 shows a section of a shaft pit 4 of a second elevator shaft 2 with a protective screen 20 according to a second embodiment, with figure 5 the corresponding plan view according to in figure 4 shown section BB is shown. The shaft pits 4 of both according to Figures 2 to 5 Elevator shafts 2 shown are delimited at the bottom by a shaft floor 6 and laterally by a shaft wall 5 . For example, at least one buffer device 11, 11.1, 11.2 is arranged standing on the bottom 6 of the shaft. The buffer device 11, 11.1, 11.2 shown as an example has a base 13, 13.1, 13.2 and a receiving stamp 15. The lower section of the base 13, 13.1, 13.2, which section has a rectangular cross section, can be made of concrete. The receiving stamp 15 is provided for contacting by the counterweight 10 in an emergency situation shown.

Einer solchen Notfallsituation entsprechend weist das in den Figuren 2 und 3 gezeigte Gegengewicht 10 seine unterstmögliche Positionierung auf. Das heißt, dass das Gegengewicht 10 derart positioniert ist, dass der Aufnahmestempel 15 der Puffervorrichtung 11, 11.1, 11.2 maximal durch das an den Aufnahmestempel 15 angrenzende Gegengewicht 10 in Richtung des Schachtbodens 6 verschoben ist.According to such an emergency situation, the figures 2 and 3 shown counterweight 10 its lowest possible positioning. This means that the counterweight 10 is positioned in such a way that the receiving plunger 15 of the buffer device 11 , 11 .

Jede der Schutzblenden 20 umfasst einen Höhenabschnitt 26, eine Abwinklung 21 und einen abgewinkelten Abschnitt 24. Der Höhenabschnitt 26 erstreckt sich parallel der Verfahrrichtung des Gegengewichtes 10 und ist gering vom Gegengewicht 10 beabstandet. Eine demgemäss geringe Beabstandung bedeutet, dass ein Servicetechniker den Raum zwischen dem Höhenabschnitt 26 und dem Gegengewicht 10 nicht betreten kann.Each of the protective screens 20 includes a height section 26, a bend 21 and an angled section 24. The height section 26 extends parallel to the direction of travel of the counterweight 10 and is slightly spaced from the counterweight 10. A correspondingly small spacing means that a service technician cannot enter the space between the height section 26 and the counterweight 10 .

Am unteren Ende des Höhenabschnittes 26 ist die Abwinklung 21 angeordnet. Der Höhenabschnitt 26 der Schutzblende 20 erstreckt sich von der Abwinklung 21 bis zu einer Höhe H von beispielhaft 2,0 m, vorzugsweise bis zu einer Höhe H von 2,50 m, wobei diese Höhe H lediglich in Figur 3 dargestellt bzw. bezeichnet ist.The bend 21 is arranged at the lower end of the vertical section 26 . The height section 26 of the protective screen 20 extends from the bend 21 to a height H of, for example, 2.0 m, preferably to a height H of 2.50 m, this height H only being figure 3 is shown or designated.

Die Abwinklung 21 ist vorzugsweise horizontal ausgerichtet und durch Abkantung oder Abbiegung oder vergleichbare Verfahren herstellbar. An der Abwinklung 21 ist ein abgewinkelter Abschnitt 24 angeordnet, welcher abgewinkelte Abschnitt 24 im Wesentlichen parallel des Schachtbodens 6 angeordnet sein kann. Alternativ kann der abgewinkelte Abschnitt 24 mit dem Höhenabschnitt 26 beispielhaft verschraubt oder verschweisst sein.The bend 21 is preferably aligned horizontally and can be produced by edging or bending or comparable methods. An angled section 24 is arranged on the bend 21 , which angled section 24 can be arranged essentially parallel to the shaft base 6 . Alternatively, the angled section 24 can be screwed or welded to the height section 26, for example.

Die gezeigten abgewinkelten Abschnitte 24 der Schutzblenden 20 weisen einen bzw. mehrere Ausschnitte 32 auf, durch welchen Ausschnitt 32 bzw. durch welche Ausschnitte 32 die mindestens eine Puffervorrichtung 11, 11.1, 11.2 hindurchragt. Jeder einzelne dieser Ausschnitte 32 ist einer einzelnen Puffervorrichtung 11, 11.1, 11.2 zugeordnet. Die Wandung der in die abgewinkelten Abschnitte 24 gebrachten Ausschnitte 32 kann dabei derart von den Aussenabmessungen der Puffervorrichtung 11, 11.1, 11.2 horizontal beabstandet sein, dass ein Verletzen durch Hindurchgreifen zwischen der Puffervorrichtung 11, 11.1, 11.2 und dem abgewinkelten Abschnitt 24 verunmöglicht ist. Mindestens ein weiterer nicht dargestellter Ausschnitt, beispielhaft zur Hindurchführung eines Kompensationselementes, kann innerhalb des abgewinkelten Abschnittes 24 vorgesehen sein.The angled sections 24 of the protective screens 20 shown have one or a plurality of cutouts 32, through which cutout 32 or through which cutouts 32 the at least one buffer device 11, 11.1, 11.2 protrudes. Each of these cutouts 32 is assigned to a single buffer device 11, 11.1, 11.2. The wall of the cutouts 32 made in the angled sections 24 can be horizontally spaced from the outer dimensions of the buffer device 11, 11.1, 11.2 in such a way that injury by reaching through between the buffer device 11, 11.1, 11.2 and the angled section 24 is impossible. At least one further cutout (not shown), for example for the passage of a compensation element, can be provided within the angled section 24 .

Der in den Figuren 2 und 3 gezeigte abgewinkelte Abschnitt 24 erstreckt sich von der Abwinklung 21 bis vorzugsweise zur Schachtwand 5, an welcher Schachtwand 5 das Gegengewicht 10 verfahrbar angeordnet ist. Vorzugsweise ist der abgewinkelte Abschnitt 24 demnach mit einem Abstand kleiner 10 cm oder kleiner 5 cm zur Schachtwand 5 beabstandet.The in the figures 2 and 3 The angled section 24 shown extends from the angled portion 21 to preferably the shaft wall 5, on which shaft wall 5 the counterweight 10 is movably arranged. Accordingly, the angled section 24 is preferably spaced at a distance of less than 10 cm or less than 5 cm from the shaft wall 5 .

Die Schutzblende 20, vorzugsweise der Höhenabschnitt 26, weist einen Wartungsausschnitt 22 zur Inspektion und/oder Wartung der Puffervorrichtung 11 auf. Durch diesen Wartungsausschnitt 22 kann beispielhaft die Puffervorrichtung 11, insbesondere deren Aufnahmestempel 15 bzw. Schalter dieser Puffervorrichtung 11, oder das Kompensationselement oder eine Auslösevorrichtung der Fangbremse justiert bzw. gewartet werden.The protective screen 20, preferably the height section 26, has a maintenance cutout 22 for inspection and/or maintenance of the buffer device 11. Through this maintenance cutout 22, for example, the buffer device 11, in particular its receiving stamp 15 or switch of this buffer device 11, or the compensation element or a triggering device of the safety brake can be adjusted or serviced.

Der in den Figuren 4 und 5 gezeigte abgewinkelte Abschnitt 24 der Schutzblende 20 erstreckt sich im Gegensatz zum in den Figuren 2 und 3 gezeigten abgewinkelten Abschnitt 24 nicht bis an die Schachtwand 5. Das gezeigte Gegengewicht 10 weist eine Position innerhalb des Aufzugsschachtes 2 auf, welche einer obersten Position der nicht dargestellten Aufzugskabine in einem Normalbetrieb entspricht. Entsprechend kontaktiert das Gegengewicht die Puffervorrichtung 11 und insbesondere den Aufnahmestempel 15 nicht.The in the figures 4 and 5 shown angled portion 24 of the protective screen 20 extends in contrast to in the figures 2 and 3 the angled section 24 shown does not reach the shaft wall 5. The counterweight 10 shown has a position within the elevator shaft 2 which corresponds to an uppermost position of the elevator car, not shown, in normal operation. Correspondingly, the counterweight does not contact the buffer device 11 and in particular the receiving stamp 15 .

Ein grösstmöglich bemessener Raum 30, welcher durch das Gegengewicht 10 entlang seines Verfahrweges einnehmbar ist, ist durch eine gestrichelte Linie gekennzeichnet. Die in Figur 4 gezeigte Linie 30 innerhalb der Schachtgrube 6 entspricht demzufolge einer unterstmöglichen Position des Gegengewichtes 10 in einer Notfallsituation.A space 30 dimensioned as large as possible, which can be occupied by the counterweight 10 along its path of travel, is indicated by a dashed line. In the figure 4 The line 30 shown within the shaft pit 6 therefore corresponds to the lowest possible position of the counterweight 10 in an emergency situation.

Der in Figur 5 in der Draufsicht dargestellte grösstmöglich bemessene Raum 30 entspricht dabei der Projektion des Gegengewichtes 10 in seiner Verfahrrichtung. Der sich in Richtung der Schachtwand 5 erstreckende abgewinkelte Abschnitt 24 der Schutzblende 20 überlappt diese Projektion des Gegengewichtes 10 zu mindestens 50%. Das heißt, dass eine Überlappung D des abgewinkelten Abschnitts 24 zum Gegengewicht 10 mindestens 50% der Tiefe C des Gegengewichtes 10 beträgt.the inside figure 5 The largest possible space 30 shown in the top view corresponds to the projection of the counterweight 10 in its direction of travel. The angled section 24 of the protective screen 20 extending in the direction of the shaft wall 5 overlaps this projection of the counterweight 10 by at least 50%. This means that an overlap D of the angled section 24 with respect to the counterweight 10 is at least 50% of the depth C of the counterweight 10 .

Eine prozentuale Überlappung, welche sich aus einem Quotienten D durch C ergibt, ist ohne Berücksichtigung eines beispielhaften Ausschnittes 32, welcher Ausschnitt 32 in dem abgewinkelten Abschnitt 24 ausgeführt ist, um die Puffervorrichtung 11 unterhalb des Gegengewichtes 10 positionieren zu können.A percentage overlap, which results from a quotient D by C, is without taking into account an exemplary cutout 32, which cutout 32 is made in the angled section 24 in order to be able to position the buffer device 11 below the counterweight 10.

Claims (7)

  1. An elevator system (1) comprising
    - a counterweight (10) that can be moved in an elevator shaft (2), which counterweight (10) can be provided for weight compensation of an elevator car (18) that can be moved in an opposite direction to the counterweight (10), and
    - a protective screen (20) which is arranged or can be arranged in a shaft pit (4) of the elevator shaft (2) and has a vertical portion (26), the vertical portion (26) being oriented substantially parallel to a movement path of the counterweight (10), the protective screen (20) being provided for preventing a person located in the shaft pit (4) from entering the movement path of the counterweight (10), characterized in that the protective screen (20) has a horizontally arranged angulation (21), an angled portion (24) of the protective screen (20) that adjoins the angulation (21) extending into the projection of the counterweight (10) that can be obtained in the movement direction.
  2. The elevator system (1) according to claim 1, comprising a bumper device (11) which is or can be arranged in the shaft pit (4) to limit the movement path of the counterweight (10), wherein the angled portion (24) of the protective screen (20) has at least one cutout (32), through which cutout (32) the bumper device (11) protrudes.
  3. The elevator system (1) according to any of the preceding claims, wherein a vertical portion (26) of the protective screen (20) arranged parallel to the movement path of the counterweight (10) has a maintenance cutout (22), preferably closable with a cover, for inspection and/or maintenance of the bumper device (11).
  4. The elevator system (1) according to any of the preceding claims, wherein the angulation (21) of the protective screen (20) is a fold or a bend.
  5. The elevator system (1) according to any of the preceding claims, wherein the outer dimensions of the angled portion (24) of the protective screen (20) cover at least 50% of the area projected by the counterweight (10) in the movement direction.
  6. The elevator system (1) according to any of the preceding claims, wherein the movement path of the counterweight (10) is or can be arranged on a shaft wall (5) of the elevator shaft (2), and the angled portion (24) can be extended or extends up to the shaft wall (5).
  7. The elevator system (1) according to any of the preceding claims, wherein a or the vertical portion (26) of the protective screen (20) arranged parallel to the movement path of the counterweight (10) is extendable or extends up to a height of at least 2 m, preferably 2.5 m, above a shaft bottom (6) of the shaft pit (4).
EP19731975.9A 2018-06-28 2019-06-18 Lift assembly with a protection screen Active EP3814265B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP18180434 2018-06-28
PCT/EP2019/065957 WO2020002039A1 (en) 2018-06-28 2019-06-18 Lift system with a protective screen

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EP3814265B1 true EP3814265B1 (en) 2022-06-29

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CN (1) CN112203966B (en)
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EP3904264A1 (en) * 2020-04-30 2021-11-03 KONE Corporation Compensation guide, counterweight screen, elevator and method

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PL3814265T3 (en) 2022-09-05
US11267676B2 (en) 2022-03-08
CN112203966B (en) 2022-12-23
WO2020002039A1 (en) 2020-01-02
AU2019295892B2 (en) 2022-03-31
US20210163259A1 (en) 2021-06-03
CN112203966A (en) 2021-01-08
SG11202009621RA (en) 2020-10-29
AU2019295892A1 (en) 2020-12-24

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