EP2456704B1 - Lift cabin ceiling with an element which can be lowered - Google Patents

Lift cabin ceiling with an element which can be lowered Download PDF

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Publication number
EP2456704B1
EP2456704B1 EP10734075.4A EP10734075A EP2456704B1 EP 2456704 B1 EP2456704 B1 EP 2456704B1 EP 10734075 A EP10734075 A EP 10734075A EP 2456704 B1 EP2456704 B1 EP 2456704B1
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EP
European Patent Office
Prior art keywords
cage
lift
cabin ceiling
ceiling part
roof part
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
EP10734075.4A
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German (de)
French (fr)
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EP2456704A1 (en
Inventor
Bjarne Lindberg
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Inventio AG
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Inventio AG
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Publication date
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Priority to EP10734075.4A priority Critical patent/EP2456704B1/en
Publication of EP2456704A1 publication Critical patent/EP2456704A1/en
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Publication of EP2456704B1 publication Critical patent/EP2456704B1/en
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    • 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
    • B66B11/02—Cages, i.e. cars
    • B66B11/0226—Constructional features, e.g. walls assembly, decorative panels, comfort equipment, thermal or sound insulation
    • B66B11/0246—Maintenance features
    • 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
    • B66B5/0087—Devices facilitating maintenance, repair or inspection tasks

Definitions

  • the present invention relates to an elevator car ceiling with a lowerable cabin ceiling part
  • Retractable cabin ceilings are used differently in an elevator. For example, trapped passengers can be freed from an elevator car via the lowered cabin ceiling, or service technicians can use the lowered cabin ceiling to gain access to components of the elevator that are to be maintained.
  • a cabin ceiling also serve to ensure a security space between the elevator car and the shaft end by the lowerable car ceiling is connected to an automatic triggering, which triggers in the unlawful presence of a person on the car roof.
  • Such a lowerable cabin ceiling usually consists of a ceiling frame and a lowerable cabin ceiling part.
  • the ceiling frame frames the cabin ceiling part.
  • the cabin ceiling part is suspended by a lowering mechanism on the ceiling frame.
  • the cabin ceiling part is held, for example by means of a bolt in its rest position at the height of the ceiling frame.
  • the Patent DE 101 04 351 A1 shows a lowerable cabin ceiling part for maintenance, which is suspended on a lowering mechanism.
  • the lowering mechanism consists of two subsystems. Each of these subsystems, in turn, has two rod-shaped elements that form a scissors-like structure. Here are the two rod-shaped elements each rotatably connected to each other approximately at its center by means of a hinge.
  • the two subsystems are coupled at the ends of the rod-shaped elements with the ceiling frame and the cabin ceiling part.
  • a lowered cabin ceiling becomes known., which is connected via Knickarmcrue with the ceiling frame.
  • Another lowerable cabin ceiling is in the EP 1 760 029 A1 shown.
  • the lifting device of the cabin ceiling comprises several Bowden cables.
  • the aim is to create the safest and most functional workplace for the service technician.
  • This includes, for example, a platform that is as stable as possible, good access to the components to be serviced in the shaft and on the cabin roof, as well as quick and easy lowering of the cabin ceiling.
  • an elevator has an elevator car, an elevator car ceiling covering the elevator car, a car ceiling part forming the elevator car ceiling, a ceiling frame framing the car ceiling part, a mechanism connecting the car ceiling part to the ceiling frame, and to the car ceiling part from an upper rest position to a lower position inside the elevator car, and at least two subsystems which are components of the mechanism.
  • a subsystem has at least two rod-shaped elements, the cabin ceiling part prevent rotation about a horizontal axis of the cabin ceiling portion and which are rotationally coupled to the cabin ceiling portion and the ceiling frame.
  • First coupling points of the at least two rod-shaped elements of a first subsystem with the cabin ceiling part lie on a first straight line and second coupling points of at least two rod-shaped elements of a second subsystem with the cabin ceiling part lie on a second straight line.
  • the first and second straight lines intersect.
  • the advantage of such an elevator is that both tilting directions of the cabin ceiling part, which serves as a platform, are rotationally secured by the subsystems.
  • the cabin ceiling part thus remains in a horizontal position during the entire lowering process.
  • the cabin ceiling portion remains in its lower position upon entering the same in a stable position.
  • the cabin ceiling part not tilted thanks to the always horizontal position of the cabin ceiling part during lowering.
  • the lowering or lifting of the cabin ceiling part is independent of the point of attack of the service technician. The maintenance technician can thus easily move the cabin ceiling part from a position near the elevator car door comfortably and controlled vertically.
  • the rod-shaped elements of the subsystems underlying the ceiling frame leave a clearance which the cabin ceiling portion passes from the upper rest position to the lower position during the lowering operation during the lowering operation.
  • the cross section of the elevator car can be used optimally. Because the components of the Absenkmechanismus need no space outside the base of the cabin ceiling part or the ceiling frame, if necessary, the base of the cabin ceiling part can reach approximately the extent of the base of the cabin interior. Thus, the maintenance technician can easily and conveniently reach all the elements to be serviced in the shaft without having to lean far or even have to stand on the cabin roof or the ceiling frame.
  • At least one subsystem has a return element which supports the lowering movement up to an upper equilibrium point, counteracts the lowering movement between the upper equilibrium point and a lower force reversal point and supports the lowering movement from the lower force reversal point.
  • the cabin ceiling part is automatically lowered from the upper rest position to the upper equilibrium point. In the upper equilibrium point of the cabin ceiling part is then held by the restoring element in suspension and prevents further rapid sagging of the cabin ceiling part in the cabin interior. In addition, the cabin ceiling part is automatically lowered from the lower equilibrium point in the lower position and prevents the cabin ceiling part from popping up when reaching the lower position. The handling of the lowerable cabin ceiling part is so much easier and safer.
  • FIGS. 1 to 3 show a first embodiment of a lowerable cabin ceiling.
  • the lowerable cabin ceiling has a ceiling frame 2, a lowerable cabin ceiling part 1 and a lowering mechanism.
  • the lowering mechanism in turn has two subsystems. Each of these subsystems is designed as a pivoting fork frame, which is composed of a base bar 14 and two fork legs 10, 11, 12, 13.
  • the show FIGS. 1 to 3 the cabin ceiling part 1 in an extended position, an intermediate position and a rest position. From the FIG. 3 It can be seen that the lowering mechanism takes up little space in its folded state.
  • FIG. 3 introduced an orthogonal reference system with the directions x, y and z, the also on the in the Figures 1 and 2 as well as in the FIGS. 4 to 16 shown embodiments finds application.
  • the two subsystems each have a pivoting fork frame, consisting of a base rod 14 and two rod-shaped fork legs 10, 11, 12, 13, which are each connected at right angles to the end of the base bar 14.
  • a base bar 14 of a first pivoting fork frame is rotatably mounted on the ceiling frame 2.
  • the free ends of the two rod-shaped fork legs 10, 11 are coupled by means of Drehlinear Inserten with the cabin ceiling part 1.
  • a basic rod of a second pivoting fork frame is rotatably mounted on the cabin ceiling part 1 and the free ends of the two fork legs 12, 13 are coupled by means of Drehlinear Inserten with the ceiling frame 2.
  • the two basic rods 14 are arranged at right angles to each other.
  • the first pivoting fork frame prevents the cabin ceiling part 1 from rotating around the x-axis of the in Figure 3 shown xyz coordinate system and the second pivoting fork frame prevents the cabin ceiling part 1 at a rotation about the y-axis, so that the cabin ceiling part 1 always remains aligned horizontally.
  • the first pivoting fork frame prevents displacement of the cabin ceiling part 1 in the y-direction and the second pivoting fork frame prevents a displacement of the cabin ceiling part 1 in the x-direction. Since the two pivoting fork frame a rotation of the cabin ceiling part 1 order To prevent the z-axis, the kinematic degrees of freedom of the lower cab lower part 1 reduce to a vertical mobility in the z-direction.
  • FIGS. 4 to 6 show a second embodiment of the lowerable cabin ceiling.
  • the cabin ceiling has a ceiling frame 2, a cabin ceiling part 1 and a lowering mechanism.
  • the lowering mechanism itself has two subsystems, each consisting of an articulated pair.
  • An articulated pair in turn comprises two articulated arms 20, 21, 22, 23, which have the same direction of rotation when lowering the cabin ceiling part 1. From the FIG. 6 It can be seen that the collapsed articulated arms on the cab roof have a very small space requirement.
  • the two subsystems each have an articulated pair of two articulated arms 20, 21 and 22, 23.
  • Each articulated arm 20, 21, 22, 23 has two rod-shaped legs 20.1, 20.2, 21.1, 21.2, 22.1, 22.2, 23.1, 23.2, which are connected to each other via a rotary joint, 20.3, 21.3, 22.3, 23.3.
  • the ends of the rod-shaped articulated arms are coupled by means of rotary bearings 20.4, 20.5, 21.4, 21.5, 22.4, 22.5, 23.4, 23.5 to the ceiling frame 2 and to the cabin ceiling part 1.
  • the directions of rotation of the first Knickarmepres, consisting of the articulated arms 20, 21, and the second Knickarmepar consisting of the articulated arms 22, 23, aligned at right angles to each other.
  • the first pair of articulated arms prevents the cabin ceiling part 1 from rotating around the x-axis in the xyz coordinate system and the second pair of articulated arms prevents the cabin ceiling part 1 from hindering on a rotation about the y-axis, so that the cabin ceiling part 1 always remains aligned horizontally.
  • At least one leg pair for example, consisting of the legs 20.2, 21.2 of the first and / or second Knickarmecrus connected by at least one transverse strut 24.1, 24.2, 25.1, 25.2.
  • Under pair of legs here are two legs 20.2, 21.2 understood that are each part of a Knickarms 20, 21, 22, 23, are arranged at the same height, ie both are either coupled to the ceiling frame 2 or both on the cabin ceiling part 1, and belong to the same Knickarmecru ,
  • the Knickarmecrue example at their leg pairs with the example: welded crossbars 24.1, 24.2, 25.1, 25.2 equipped.
  • These transverse struts 24.1, 24.2, 25.1, 25.2 move in the lowering process in different planes and are geometrically designed so that no collisions take place during the movement of the cabin ceiling part 1 between the cross struts 24.1, 24.2, 25.1, 25.2 and the pairs of legs different Knickarmecoope.
  • FIGS. 7 to 10 show an example of an embodiment with eight cross struts 24.1, 24.2, 25.1, 25.2.
  • Each two cross struts 24.1, 24.2, 25.1, 25.2 form a cross strut cross, which each connects a leg pair of a Knickarmecrus.
  • FIGS. 14 to 16 show the second embodiment with at least one transverse strut 29, 30, which connects the hinges 20.3, 21.3 and 22.3, 23.3 each of a Knickarmecrus together.
  • This at least one additional transverse strut 29, 30 causes a further reinforcement and stabilization of the lowering mechanism.
  • the at least one additional transverse strut 29, 30 is realized, for example, as a cross-connection tube.
  • FIG. 14 are all pairs of legs of Knickarmeprese equal length.
  • An articulated pair for example consisting of the articulated arms 20, 21, is mounted on the cabin ceiling part 1 or coupled to the ceiling frame 2.
  • support elements 31.1, 31.2, 32.1, 32.2 such as spacer plates 32.1, spacing blocks 31.1, 31.2, 32.2 or washers used.
  • These support elements 31.1, 31.2, 32.1, 32.2 are mounted on top of the cabin ceiling part 1 and on top of the ceiling frame 2 and serve as increased coupling points of the articulated arms 20, 21, 22, 23. In this way, the two transverse struts 29, 30 come at different heights lie and remain collision-free when lowering the lowering mechanism.
  • FIGS. 15 and 16 is the upper leg pair of a first Knickarmecrus with the legs 22.2, 23.2 shorter than the upper leg pair of a second Knickarmepar with the legs 20.2, 21.2. Due to the different length of these leg pairs result in different height folding axes of Knickarmecrue. During the lowering movement is thus ensured that the additional transverse struts 29, 30 do not collide with cross struts 24.1, 25.2 or legs 20.1, 20.2, 21.1, 21.2, 22.1, 22.2, 23.1, 23.2 other Knickarmpase.
  • a pad element 33.1, 33.2, 34.1, 34.2 is still provided to increase the coupling points of the articulated arms 20, 21, 22, 23 on the cabin ceiling part 1 or ceiling frame 2.
  • the difference in the leg length can be selected by the skilled person so that it is possible to dispense with a support element.
  • FIGS. 11 to 16 connects in the second embodiment at least one further articulated arm 28 a free corner of the cabin ceiling part 1 with the ceiling frame 2.
  • Three corners of the cabin ceiling part 1 are already held by the articulated arms 20, 21, 22, 23.
  • a further stabilization of the cabin ceiling part 1 in the lowered position is ensured by means of at least one additional articulated arm 28 which connects the free fourth corner of the cabin ceiling part 1 with the ceiling frame 2.
  • the additional articulated arm 28 preferably arranged at a 45 ° angle to the other articulated arms 20, 21, 22, 23.
  • the FIGS. 11 to 13 is an arrangement of the articulated arm 28, in which he collapses parallel to the bending axis of the second Knickarmecrus, also possible.
  • the free fourth corner can be further stabilized by the attachment of a second additional articulated arm.
  • the orientation of the axis of rotation of the first additional articulated arm are parallel to the axis of rotation of the articulated arms 20, 21 and the orientation of the axis of rotation of the second additional articulated arm parallel to the axis of rotation of the articulated arms 22, 23rd
  • FIGS. 11 to 13 show the second embodiment with a weight compensation mechanism.
  • the weight compensation mechanism has at least one lever arm 26.2, 27.2 and a return element 26.1, 27.1.
  • the weight compensation mechanism aims at a partial compensation of the weight of the cabin ceiling part 1 and the lowering mechanism, whereby the most comfortable and safe lowering and lifting the cabin ceiling part 1 is achieved using a small hand force as possible.
  • FIGS. 11 to 13 is in the second embodiment, at least one upper leg 22.2, 23.2 of an articulated arm 22, 23 rotatably coupled to the lever arm 26.2, 27.2.
  • the coupling angle between in each case a lever arm 26.2, 27.2 and an upper leg 22.2, 23.2 is preferably in the range of 0 to 30 °.
  • a return element 26.1, 27.1 couples a lever arm 26.2, 27.2 and the elevator car 3 and exerts a restoring force on the lever arm 26.2, 27.2 and the upper leg 22.2, 23.2.
  • two lever arms 26.2, 27.2 are connected to the elevator car 3 by means of tension springs 26.1, 27.1.
  • a restoring element 26.1, 27.1 designed as a tension spring.
  • a tension spring 26.1, 27.1 attached to the rear supporting corner profiles of the elevator car 3 at the upper end of the lever 26.2, 27.2 and laterally outside.
  • the return elements could also be designed as gas springs. An arrangement with compression springs is also possible.
  • the design of the weight compensation mechanism in particular the geometric relationships, the masses of the moving parts and the spring constants of the springs are chosen so that the cabin ceiling part 1 with a lower or lift manual power of preferably less than about 100 N.
  • FIG. 17 shows the force-displacement curve of the applied manual force.
  • the cabin ceiling part goes through the following lowering and lifting steps:
  • the maintenance technician dissolves inside the elevator car 3 a locking of the lowerable cabin ceiling part 1.
  • the part 1 is lowered by, for example, about 150 mm to an upper equilibrium point.
  • the maintenance technician stands in the car door opening and pulls the cabin ceiling part 1 preferably at its front end further down until the cabin ceiling part 1 has passed a lower power reversal point at about 770 mm reduction.
  • the maintenance technician locks at least one of the front articulated arms 20, 28, wherein a rotary joint 20.3, 28.3 is fixed.
  • the service technician takes the ladder 4 from the cab roof part 1 and rises by means of the ladder 4 to the cab roof part 1. If the other articulated arms 21, 22, 23 are not yet fully outstretched, they are now stretched to the stop by the weight of the service technician.
  • the maintenance technician can now make all the necessary maintenance work in the shaft out of the elevator car 3. After completing the maintenance work and leaving the cabin ceiling part 1, the service technician places the ladder 4 back on the cabin ceiling part 1.
  • the maintenance technician releases the locking of the front articulated arm 20, 28 and pushes it into the cabin center until the cabin ceiling part 1 has passed the lower power reversal point at about 750 mm.
  • the remaining articulated arms 21, 22, 23 are preferably provided with return springs, which ensure that the articulated arms 21, 22, 23 reliably buckle in the intended direction towards the elevator car center. From the equilibrium point the cabin ceiling part 1 is lifted by the tension springs 26.1, 27.1 in the upper equilibrium point at about 150 mm. Depending on the system friction of the lowering mechanism, it may be necessary to use a small hand force to reach the upper equilibrium point.
  • the maintenance technician now goes into the elevator car 3 and pushes the cabin ceiling part 1 against the spring force of the tension springs 26.1, 27.1 upwards and locks the cabin ceiling part 1 in its upper rest position.
  • the Figures 18 and 19 illustrate an elevator 100, which has an elevator car 3, which is movable in the elevator shaft 40.
  • the elevator 100 furthermore has at least one suspension or traction means, on which the elevator car 3 is suspended, via a drive which is in operative contact with the suspension or traction means and which drives the latter, via a counterweight, which is likewise suspended from the suspension. or traction means is suspended and balances the cabin weight, and guide rails, the elevator car 3 in the elevator shaft 40 leads.
  • the latter elevator components are in the Figures 18 and 19 not shown for clarity.
  • FIG. 18 a doorless elevator car 3 with the cabin ceiling part 1 in its rest position and with collapsed lowering mechanism.
  • the movable part of the ceiling, the cabin ceiling part 1 and the lowering mechanism is suspended from the roof frame 2 and preferably locked by means of a bolt, bolt or the like.
  • the ceiling frame 2 is preferably attached to four corner profiles of the elevator car 3.
  • the FIG. 19 shows the elevator car 3 with the cabin ceiling part 1 in its lowered position.
  • the lowerable car ceiling is described in the above embodiments in the application as a maintenance platform. However, this cabin ceiling can also be used for other purposes with minor adaptations.
  • the lowerable car ceiling is also an evacuation platform for the exit from a stationary elevator car or as a safety device for maintaining a security space above the elevator car, especially at reduced height of the shaft headspace.
  • the lowerable cabin ceiling part When using the lowerable cabin ceiling as an evacuation platform, the changed space requirements must be taken into account primarily.
  • the lowerable cabin ceiling part is to be designed so that a passenger can reach the top of the cabin ceiling part from the interior of the elevator car even with the cabin doors closed.
  • large base surface of the cabin ceiling part of advantage is in the dimensioning of the cabin ceiling part as an evacuation platform to ensure that when lowered cabin ceiling part, a passenger can stand upright next to the cabin ceiling part. It is advantageous if the cabin ceiling part only uses about half of the floor space available in the cabin interior. This ensures that a passenger, for example, by means of a ladder board the cabin ceiling part and can get from there to the cabin roof.
  • the ladder is preferably on the top of the cabin ceiling part, as in the above example.
  • the evacuation platform is preferably also equipped with a weight-balancing mechanism so that the cab top part can be operated safely and with the least manual effort.
  • a weight compensation mechanism of the type described above is suitable with a lever arm and a return element with a comparable force-displacement curve. The adjustment of the return element and the arrangement of the elements of the weight balance mechanism follow, taking into account the changed weight ratios of the reduced cabin ceiling part.
  • the largest possible base area of the cabin ceiling part is advantageous. Because the safety device to enter the cabin roof by an unauthorized person reliably a security room of a virtual cuboid with a floor area of at least 0.6 to 0.8 m and a Höche of at least 0.5 m guarantee. For this purpose, the cabin ceiling part lowers after entering the interior of the elevator car.
  • the safety device has a modified weight compensation mechanism, which has an adapted force-displacement curve.
  • the weight compensation mechanism is for example adjustable so that a restoring force acts over the entire lowering path of the cabin ceiling part.
  • the lowering of the cabin ceiling part is braked so that neither persons inside the cabin nor the person who is on the canopy come to harm.
  • the tension spring from the above example, the use of a damper or a spring-damper combination is possible.
  • the safety device also has a triggering mechanism for releasing the locking of the cabin ceiling part.
  • the automatic triggering system comprises at least one sensor for detecting the presence of a person on the car roof and an actuator for opening the lock. Suitable sensors are infrared sensors, pressure sensors, motion detectors, pedal switches and the like.
  • the safety device has no automatic triggering. There is also no locking of the cabin ceiling part provided.
  • a design of the weight compensation mechanism is provided, which presses the cabin ceiling part in the rest position against a stop. Only after the person sitting on the car roof unauthorized person steps on the cabin ceiling part, the cabin ceiling part lowers by the additional weight of the person inside the elevator car.
  • the lowerable car ceiling can be used as a maintenance platform and / or evacuation platform and / or as a safety device.

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  • Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Cage And Drive Apparatuses For Elevators (AREA)

Description

Die vorliegende Erfindung betrifft eine Aufzugskabinendecke mit einem absenkbaren KabinendeckenteilThe present invention relates to an elevator car ceiling with a lowerable cabin ceiling part

Absenkbare Kabinendecken werden in einem Aufzug unterschiedlich eingesetzt. So lassen sich eingeschlossene Fahrgäste über die abgesenkte Kabinendecke aus einer Aufzugskabine befreien oder Wartungstechniker können sich über die abgesenkte Kabinendecke Zugang zu Bestandteilen des Aufzugs, die zu warten sind, verschaffen. Zudem kann eine solche Kabinendecke auch dazu dienen, einen Sicherheitsraum zwischen der Aufzugskabine und dem Schachtende zu gewährleisten, indem die absenkbare Kabinendecke mit einer Auslösungsautomatik verbunden ist, die bei unerlaubter Anwesenheit einer Person auf dem Kabinendach auslöst.Retractable cabin ceilings are used differently in an elevator. For example, trapped passengers can be freed from an elevator car via the lowered cabin ceiling, or service technicians can use the lowered cabin ceiling to gain access to components of the elevator that are to be maintained. In addition, such a cabin ceiling also serve to ensure a security space between the elevator car and the shaft end by the lowerable car ceiling is connected to an automatic triggering, which triggers in the unlawful presence of a person on the car roof.

Eine solche absenkbare Kabinendecke besteht üblicherweise aus einem Deckenrahmen und einem absenkbaren Kabinendeckenteil. Dabei rahmt der Deckenrahmen das Kabinendeckenteil ein. Das Kabinendeckenteil wird durch einen Absenkmechanismus am Deckenrahmen aufgehängt. Zudem wird das Kabinendeckenteil beispielsweise mittels eines Riegels in seiner Ruheposition auf Höhe des Deckenrahmens gehalten.Such a lowerable cabin ceiling usually consists of a ceiling frame and a lowerable cabin ceiling part. The ceiling frame frames the cabin ceiling part. The cabin ceiling part is suspended by a lowering mechanism on the ceiling frame. In addition, the cabin ceiling part is held, for example by means of a bolt in its rest position at the height of the ceiling frame.

Die Patentschrift DE 101 04 351 A1 zeigt ein absenkbares Kabinendeckenteil für Wartungsarbeiten, das an einem Absenkmechanismus aufgehängt ist. Der Absenkmechanismus besteht aus zwei Untersystemen. Jedes dieser Untersysteme wiederum verfügt über zwei stabförmige Elemente, die eine scherenartige Struktur bilden. Dabei sind die beiden stabförmigen Elemente jeweils in etwa in ihrer Mitte mittels eines Gelenks drehbar miteinander verbunden. Die beiden Untersysteme sind an den Enden der stabförmigen Elemente mit dem Deckenrahmen und dem Kabinendeckenteil gekoppelt.The Patent DE 101 04 351 A1 shows a lowerable cabin ceiling part for maintenance, which is suspended on a lowering mechanism. The lowering mechanism consists of two subsystems. Each of these subsystems, in turn, has two rod-shaped elements that form a scissors-like structure. Here are the two rod-shaped elements each rotatably connected to each other approximately at its center by means of a hinge. The two subsystems are coupled at the ends of the rod-shaped elements with the ceiling frame and the cabin ceiling part.

Aus der JP 9 263372 A ist eine absenkbare Kabinendecke bekannt geworden., die über Knickarmpaare mit dem Deckenrahmen verbunden ist. Eine weitere absenkbare Kabinendecke ist in der EP1 760 029 A1 gezeigt. Die Hebevorrichtung der Kabinendecke umfasst mehrere Bowdenzüge.From the JP 9 263372 A is a lowered cabin ceiling become known., Which is connected via Knickarmpaare with the ceiling frame. Another lowerable cabin ceiling is in the EP 1 760 029 A1 shown. The lifting device of the cabin ceiling comprises several Bowden cables.

Bei der Entwicklung einer absenkbaren Kabinendecke wird angestrebt einen möglichst sicheren und funktionalen Arbeitsort für den Wartungstechniker zu schaffen. Dies beinhaltet beispielsweise eine möglichst stabile Plattform, einen guten Zugang zu den zu wartenden Komponenten im Schacht und auf dem Kabinendach sowie ein einfaches und schnelles Absenken der Kabinendecke.In the development of a lowerable cabin ceiling, the aim is to create the safest and most functional workplace for the service technician. This includes, for example, a platform that is as stable as possible, good access to the components to be serviced in the shaft and on the cabin roof, as well as quick and easy lowering of the cabin ceiling.

Dementsprechend ist es die Aufgabe der vorliegenden Erfindung die Handhabung und die Sicherheit von absenkbaren Kabinendecken weiter zu verbessern.Accordingly, it is the object of the present invention to further improve the handling and safety of lowerable cabin ceilings.

Gemäss eines Aspekts verfügt ein Aufzug über eine Aufzugskabine, eine Aufzugskabinendecke, die die Aufzugskabine deckt, ein Kabinendeckenteil, das Bestandteil der Aufzugskabinendecke ist, einen Deckenrahmen, der das Kabinendeckenteil umrahmt, einen Mechanismus, der das Kabinendeckenteil mit dem Deckenrahmen verbindet und an dem das Kabinendeckenteil von einer oberen Ruheposition in eine untere Position ins innere der Aufzugskabine absenkbar ist, und mindestens zwei Untersysteme, die Bestandteile des Mechanismus sind. Dabei verfügt ein Untersystem über mindestens zwei stabförmige Elemente, die das Kabinendeckenteil am Rotieren um eine Horizontalachse des Kabinendeckenteils hindern und die rotatorisch mit dem Kabinendeckenteil und dem Deckenrahmen gekoppelt sind. Erste Kopplungspunkte der mindestens zwei stabförmigen Elemente eines ersten Untersystems mit dem Kabinendeckenteil liegen auf einer ersten Gerade und zweite Kopplungspunkte der mindestens zwei stabförmigen Elemente eines zweiten Untersystems mit dem Kabinendeckenteil liegen auf einer zweiten Gerade. Dabei schneiden sich die erste und die zweite Gerade.According to one aspect, an elevator has an elevator car, an elevator car ceiling covering the elevator car, a car ceiling part forming the elevator car ceiling, a ceiling frame framing the car ceiling part, a mechanism connecting the car ceiling part to the ceiling frame, and to the car ceiling part from an upper rest position to a lower position inside the elevator car, and at least two subsystems which are components of the mechanism. In this case, a subsystem has at least two rod-shaped elements, the cabin ceiling part prevent rotation about a horizontal axis of the cabin ceiling portion and which are rotationally coupled to the cabin ceiling portion and the ceiling frame. First coupling points of the at least two rod-shaped elements of a first subsystem with the cabin ceiling part lie on a first straight line and second coupling points of at least two rod-shaped elements of a second subsystem with the cabin ceiling part lie on a second straight line. The first and second straight lines intersect.

Der Vorteil eines solchen Aufzugs liegt darin, dass beide Kipprichtungen des Kabinendeckenteils, der als Plattform dient, durch die Untersysteme drehgesichert sind. Der Kabinendeckenteil bleibt also während des ganzen Absenkvorgangs in einer horizontalen Lage. Zudem bleibt der Kabinendeckenteil in seiner unteren Position bei Betreten desselben in einer stabilen Lage. Diese Vorteile ermöglichen beispielsweise einem Wartungstechniker den Kabinendeckenteil auf einfache und kontrollierte Weise abzusenken und vereinfachen dank der Stabilität der Plattform die Wartungsarbeiten aus der Aufzugskabine.The advantage of such an elevator is that both tilting directions of the cabin ceiling part, which serves as a platform, are rotationally secured by the subsystems. The cabin ceiling part thus remains in a horizontal position during the entire lowering process. In addition, the cabin ceiling portion remains in its lower position upon entering the same in a stable position. These advantages, for example, allow a service technician to lower the cabin ceiling portion in a simple and controlled manner and, thanks to the stability of the platform, simplify maintenance operations from the elevator car.

Weiters vorteilhaft ist, dass das Kabinendeckenteil dank der stets horizontalen Lage des Kabinendeckenteils während des Absenkens nicht verkantet. Zudem erfolgt das Absenken oder Heben des Kabinendeckenteils unabhängig vom Angriffspunkt des Wartungstechnikers. Der Wartungstechniker kann somit den Kabinendeckenteil auch aus einer Position nahe der Aufzugskabinentüre ohne weiteres bequem und kontrolliert vertikal verschieben.It is also advantageous that the cabin ceiling part not tilted thanks to the always horizontal position of the cabin ceiling part during lowering. In addition, the lowering or lifting of the cabin ceiling part is independent of the point of attack of the service technician. The maintenance technician can thus easily move the cabin ceiling part from a position near the elevator car door comfortably and controlled vertically.

Vorzugsweise verlassen die stabförmigen Elemente der Untersysteme, die unterhalb des Deckenrahmens liegen, einen Lichtraum, den das Kabinendeckenteil von der oberen Ruheposition in die untere Position beim Absenkvorgang durchläuft, während des Absenkvorgangs nicht.Preferably, the rod-shaped elements of the subsystems underlying the ceiling frame leave a clearance which the cabin ceiling portion passes from the upper rest position to the lower position during the lowering operation during the lowering operation.

Vorteilhaft ist, dass der Querschnitt der Aufzugskabine optimal genutzt werden kann. Da die Bestandteile des Absenkmechanismus keinen Raum ausserhalb der Grundfläche des Kabinendeckenteils bzw. des Deckenrahmens benötigen, kann bei Bedarf die Grundfläche des Kabinendeckenteils annähernd die Ausdehnung der Grundfläche des Kabineninnenraums erreichen. So kann der Wartungstechniker einfach und bequem alle zu wartenden Elemente im Schacht erreichen ohne sich weit vorbeugen oder gar auf das Kabinendach beziehungsweise den Deckenrahmen stehen zu müssen.It is advantageous that the cross section of the elevator car can be used optimally. Because the components of the Absenkmechanismus need no space outside the base of the cabin ceiling part or the ceiling frame, if necessary, the base of the cabin ceiling part can reach approximately the extent of the base of the cabin interior. Thus, the maintenance technician can easily and conveniently reach all the elements to be serviced in the shaft without having to lean far or even have to stand on the cabin roof or the ceiling frame.

Erfindungsgemäss verfügt mindestens ein Untersystem über ein Rückstellelement, das die Absenkbewegung bis zu einem oberen Gleichgewichtspunkt unterstützt, zwischen dem oberen Gleichgewichtspunkt und einem unteren Kraftumkehrpunkt der Absenkbewegung entgegenwirkt und die Absenkbewegung ab dem unteren Kraftumkehrpunkt unterstützt.According to the invention, at least one subsystem has a return element which supports the lowering movement up to an upper equilibrium point, counteracts the lowering movement between the upper equilibrium point and a lower force reversal point and supports the lowering movement from the lower force reversal point.

Vorteilhaft ist der Einsatz eines Rückstellelements, das den Kraftaufwand eines Wartungstechnikers beim Absenken oder Heben des Kabinendeckenteils zwischen den zwei Gleichgewichtspunkten minimiert. Zudem wird der Kabinendeckenteil aus der oberen Ruhestellung bis in den oberen Gleichgewichtspunkt automatisch abgesenkt. Im oberen Gleichgewichtspunkt wird dann der Kabinendeckenteil vom Rückstellelement in der Schwebe gehalten und verhindert ein weiteres schnelles Durchsacken des Kabinendeckenteils in den Kabineninnenraum. Zudem wird der Kabinendeckenteil ab dem unteren Gleichgewichtspunkt automatisch in die untere Position abgesenkt und verhindert ein Aufspringen des Kabinendeckenteils beim Erreichen der unteren Position. Die Handhabung des absenkbaren Kabinendeckenteils wird also viel einfacher und sicherer.It is advantageous to use a restoring element that minimizes the effort of a service technician when lowering or lifting the cabin ceiling part between the two equilibrium points. In addition, the cabin ceiling part is automatically lowered from the upper rest position to the upper equilibrium point. In the upper equilibrium point of the cabin ceiling part is then held by the restoring element in suspension and prevents further rapid sagging of the cabin ceiling part in the cabin interior. In addition, the cabin ceiling part is automatically lowered from the lower equilibrium point in the lower position and prevents the cabin ceiling part from popping up when reaching the lower position. The handling of the lowerable cabin ceiling part is so much easier and safer.

Im Folgenden wird die Erfindung durch ein Ausführungsbeispiele und den Zeichnungen gemäss den Figuren 11 bis 13 verdeutlicht und weiter beschrieben. Es zeigen:

Fig. 1
eine erste Ausführungsform des absenkbaren Kabinendeckenteils mit zwei Schwenkgabelrahmen in einer ausgezogenen Position;
Fig. 2
die erste Ausführungsform des absenkbaren Kabinendeckenteils mit zwei Schwenkgabelrahmen beim Absenken;
Fig. 3
die erste Ausführungsform des absenkbaren Kabinendeckenteils mit zwei Schwenkgabelrahmen in einer oberen Ruheposition;
Fig. 4
eine zweite Ausführungsform des absenkbaren Kabinendeckenteils mit zwei Knickarmepaaren in einer ausgezogenen Position;
Fig. 5
die zweite Ausführungsform des absenkbaren Kabinendeckenteils mit zwei Knickarmepaaren beim Absenken;
Fig. 6
die zweite Ausführungsform des absenkbaren Kabinendeckenteils mit zwei Knickarmepaaren in einer oberen Ruheposition;
Fig. 7
die zweite Ausführungsform des absenkbaren Kabinendeckenteils mit zwei Knickarmepaaren und Querstreben zwischen den Schenkeln der Knickarmepaare in einer ausgezogenen Position;
Fig. 8
die zweite Ausführungsform des absenkbaren Kabinendeckenteils mit zwei Knickarmepaaren und Querstreben zwischen den Schenkeln der Knickarmepaare beim Absenken;
Fig. 9
die zweite Ausführungsform des absenkbaren Kabinendeckenteils mit zwei Knickarmepaaren und Querstreben zwischen den Schenkeln der Knickarmepaare in einer oberen Ruheposition;
Fig. 10
die zweite Ausführungsform des absenkbaren Kabinendeckenteils mit zwei Knickarmepaaren und Querstreben zwischen den Schenkeln der Knickarmepaare beim Absenken;
Fig. 11
die zweite Ausführungsform des absenkbaren Kabinendeckenteils mit zwei Knickarmepaaren und zwei Rückstellelementen für einen erfindungsgemässen Aufzug in einer ausgezogenen Position;
Fig. 12
die zweite Ausführungsform des absenkbaren Kabinendeckenteils mit zwei Knickarmrepaaren und zwei Rückstellelementen beim Absenken;
Fig. 13
die zweite Ausführungsform des absenkbaren Kabinendeckenteils mit zwei Knickarmrepaaren und zwei Rückstellelementen in einer oberen Ruheposition;
Fig. 14
die zweite Ausführungsform des absenkbaren Kabinendeckenteils mit zwei Knickarmrepaaren und Querstreben zwischen den Schenkeln und den Gelenken der Knickarmepaare in einer Variante mit gleichlangen Schenkeln beim Absenken;
Fig. 15
die zweite Ausführungsform des absenkbaren Kabinendeckenteils mit zwei Knickarmrepaaren sowie Querstreben zwischen den Schenkeln und den Gelenken der Knickarmepaare in einer Variante mit ungleichlangen Schenkeln in einer ausgezogenen Position;
Fig. 16 die zweite Ausführungsform des absenkbaren Kabinendeckenteils mit zwei Knickarmepaaren sowie Querstreben zwischen den Schenkeln und den Gelenken der Knickarmepaare in einer Variante mit ungleichlangen Schenkeln beim Absenken;
Fig. 17 eine Kraft-Weg-Diagramm beim Handauszug des absenkbaren Kabinendeckenteils mit zwei Rückstellelementen;
Fig. 18 eine Aufzugskabine mit einem absenkbaren Kabinendeckenteil in einer oberen Ruheposition; und
Fig. 19 die Aufzugskabine mit einem absenkbaren Kabinendeckenteil in einer ausgezogenen Position.
In the following the invention by an embodiment and the drawings according to the FIGS. 11 to 13 clarified and further described. Show it:
Fig. 1
a first embodiment of the lower cab lower part with two pivoting fork frame in an extended position;
Fig. 2
the first embodiment of the lower cab lower part with two pivoting fork frame when lowering;
Fig. 3
the first embodiment of the lower cab lower part with two pivoting fork frame in an upper rest position;
Fig. 4
a second embodiment of the lowerable cabin ceiling part with two pairs of articulated arms in an extended position;
Fig. 5
the second embodiment of the lowerable cabin ceiling part with two pairs of articulated arms when lowering;
Fig. 6
the second embodiment of the lowerable cabin ceiling part with two pairs of articulated arms in an upper rest position;
Fig. 7
the second embodiment of the lowerable cabin ceiling part with two pairs of articulated arms and cross struts between the legs of the Knickarmepaare in an extended position;
Fig. 8
the second embodiment of the lowerable cabin ceiling part with two Knickarmepaaren and Cross struts between the legs of the Knickarmepaare when lowering;
Fig. 9
the second embodiment of the lowerable cabin ceiling part with two pairs of articulated arms and cross struts between the legs of the Knickarmepaare in an upper rest position;
Fig. 10
the second embodiment of the lowerable cabin ceiling part with two pairs of articulated arms and cross struts between the legs of Knickarmepaare when lowering;
Fig. 11
the second embodiment of the lowerable cab ceiling part with two pairs of articulated arms and two return elements for a lift according to the invention in an extended position;
Fig. 12
the second embodiment of the lowerable cabin ceiling part with two Knickarmrepaaren and two return elements when lowering;
Fig. 13
the second embodiment of the lowerable cabin ceiling part with two articulated repeater arms and two return elements in an upper rest position;
Fig. 14
the second embodiment of the lowerable cabin ceiling part with two Knickarmrepaaren and cross struts between the legs and the joints of Knickarmepaare in a variant with equal legs when lowering;
Fig. 15
the second embodiment of the lowerable cabin ceiling part with two Knickarmrepaaren and transverse struts between the legs and the joints of the Knickarmepaare in a variant with unequal length legs in an extended position;
16 shows the second embodiment of the lowerable cabin ceiling part with two pairs of articulated arms and transverse struts between the legs and the joints of the articulated pairs in a variant with uneven legs during lowering;
17 shows a force-displacement diagram during the manual extraction of the lowerable cabin ceiling part with two restoring elements;
18 shows an elevator car with a lowerable cabin ceiling part in an upper rest position; and
Fig. 19, the elevator car with a lowerable cabin ceiling part in an extended position.

Die Figuren 1 bis 3 zeigen eine erste Ausführungsform einer absenkbaren Kabinendecke. Die absenkbare Kabinendecke verfügt über einen Deckenrahmen 2, ein absenkbares Kabinendeckenteil 1 und über einen Absenkmechanismus. Der Absenkmechanismus wiederum verfügt über zwei Untersysteme. Jedes dieser Untersysteme ist als Schwenkgabelrahmen ausgelegt, der aus einem Grundstab 14 und zwei Gabelschenkeln 10, 11, 12, 13 zusammengesetzt ist. Dabei zeigen die Figuren 1 bis 3 das Kabinendeckenteil 1 in einer ausgezogenen Position, einer Zwischenposition und in einer Ruheposition. Aus der Figur 3 ist ersichtlich, dass der Absenkmechanismus in seinem zusammengefalteten Zustand wenig Raum beansprucht. Zudem ist in Figur 3 ein orthogonales Referenzsystem mit den Richtungen x, y und z eingeführt, das ebenso auf die in den Figuren 1 und 2 sowie die in den Figuren 4 bis 16 gezeigten Ausführungsformen Anwendung findet.The FIGS. 1 to 3 show a first embodiment of a lowerable cabin ceiling. The lowerable cabin ceiling has a ceiling frame 2, a lowerable cabin ceiling part 1 and a lowering mechanism. The lowering mechanism in turn has two subsystems. Each of these subsystems is designed as a pivoting fork frame, which is composed of a base bar 14 and two fork legs 10, 11, 12, 13. The show FIGS. 1 to 3 the cabin ceiling part 1 in an extended position, an intermediate position and a rest position. From the FIG. 3 It can be seen that the lowering mechanism takes up little space in its folded state. Moreover, in FIG. 3 introduced an orthogonal reference system with the directions x, y and z, the also on the in the Figures 1 and 2 as well as in the FIGS. 4 to 16 shown embodiments finds application.

In der ersten Ausführungsform gemäss den Figuren 1 bis 3 verfügen die beiden Untersysteme je über einen Schwenkgabelrahmen, bestehend aus einem Grundstab 14 und zwei stabförmigen Gabelschenkeln 10, 11, 12, 13, die je rechtwinklig mit dem Ende des Grundstabs 14 verbunden sind. In den Figuren 1 bis 3 ist aus Platzgründen nur der eine Grundstab 14, der am Deckenrahmen befestigt ist visualisiert. Ein Grundstab 14 eines ersten Schwenkgabelrahmens ist drehbar am Deckenrahmen 2 befestigt. Die freien Enden der zwei stabförmigen Gabelschenkel 10, 11 sind mittels Drehlinearführungen mit dem Kabinendeckenteil 1 gekoppelt. Ein Grundstab eines zweiten Schwenkgabelrahmens ist drehbar am Kabinendeckenteil 1 befestigt und die freien Enden der zwei Gabelschenkel 12, 13 sind mittels Drehlinearführungen mit dem Deckenrahmen 2 gekoppelt. Zudem sind die beiden Grundstäbe 14 rechtwinklig zueinander angeordnet.In the first embodiment according to the FIGS. 1 to 3 The two subsystems each have a pivoting fork frame, consisting of a base rod 14 and two rod-shaped fork legs 10, 11, 12, 13, which are each connected at right angles to the end of the base bar 14. In the FIGS. 1 to 3 For reasons of space, only one basic bar 14, which is fastened to the ceiling frame, is visualized. A base bar 14 of a first pivoting fork frame is rotatably mounted on the ceiling frame 2. The free ends of the two rod-shaped fork legs 10, 11 are coupled by means of Drehlinearführungen with the cabin ceiling part 1. A basic rod of a second pivoting fork frame is rotatably mounted on the cabin ceiling part 1 and the free ends of the two fork legs 12, 13 are coupled by means of Drehlinearführungen with the ceiling frame 2. In addition, the two basic rods 14 are arranged at right angles to each other.

Der erste Schwenkgabelrahmen hindert das Kabinendeckenteil 1 an einer Rotation um die x-Achse des in Fig.3 gezeigten x-y-z Koordinatensystems und der zweite Schwenkgabelrahmen hindert das Kabinendeckenteil 1 an einer Rotation um die y-Achse, so dass das Kabinendeckenteil 1 stets waagrecht ausgerichtet bleibt. Zudem verhindert der erste Schwenkgabelrahmen eine Verschiebung des Kabinendeckenteils 1 in y-Richtung und der zweite Schwenkgabelrahmen verhindert eine Verschiebung des Kabinendeckenteils 1 in x-Richtung. Da die beiden Schwenkgabelrahmen eine Rotation des Kabinendeckenteils 1 um die z-Achse verhindern, reduzieren sich die kinematischen Freiheitsgrade des absenkbaren Kabinendeckenteils 1 auf eine vertikale Beweglichkeit in z-Richtung.The first pivoting fork frame prevents the cabin ceiling part 1 from rotating around the x-axis of the in Figure 3 shown xyz coordinate system and the second pivoting fork frame prevents the cabin ceiling part 1 at a rotation about the y-axis, so that the cabin ceiling part 1 always remains aligned horizontally. In addition, the first pivoting fork frame prevents displacement of the cabin ceiling part 1 in the y-direction and the second pivoting fork frame prevents a displacement of the cabin ceiling part 1 in the x-direction. Since the two pivoting fork frame a rotation of the cabin ceiling part 1 order To prevent the z-axis, the kinematic degrees of freedom of the lower cab lower part 1 reduce to a vertical mobility in the z-direction.

Die Figuren 4 bis 6 zeigen eine zweite Ausführungsform der absenkbaren Kabinendecke. Auch in dieser zweiten Ausführungsform verfügt die Kabinendecke über einen Deckenrahmen 2, ein Kabinendeckenteil 1 und einen Absenkmechanismus. Der Absenkmechanismus selbst verfügt über zwei Untersysteme, die je aus einem Knickarmepaar bestehen. Ein Knickarmepaar wiederum umfasst zwei Knickarme 20, 21, 22, 23, die den gleichen Drehsinn beim Absenken des Kabinendeckenteils 1 besitzen. Aus der Figur 6 ist ersichtlich dass die zusammenfalteten Knickarme auf dem Kabinendach einen äusserst geringen Raumbedarf aufweisen.The FIGS. 4 to 6 show a second embodiment of the lowerable cabin ceiling. Also in this second embodiment, the cabin ceiling has a ceiling frame 2, a cabin ceiling part 1 and a lowering mechanism. The lowering mechanism itself has two subsystems, each consisting of an articulated pair. An articulated pair in turn comprises two articulated arms 20, 21, 22, 23, which have the same direction of rotation when lowering the cabin ceiling part 1. From the FIG. 6 It can be seen that the collapsed articulated arms on the cab roof have a very small space requirement.

In der zweiten Ausführungsform gemäss den Figuren 4 bis 6 verfügen die beiden Untersysteme je über ein Knickarmepaar bestehend aus zwei Knickarmen 20, 21 und 22, 23. Jeder Knickarm 20, 21, 22, 23 verfügt über zwei stabförmige Schenkel 20.1, 20.2, 21.1, 21.2, 22.1, 22.2, 23.1, 23.2, die über ein Drehgelenk, 20.3, 21.3, 22.3, 23.3 miteinander verbunden sind. Die Enden der stabförmigen Knickarme sind mittels Drehlager 20.4, 20.5, 21.4, 21.5, 22.4, 22.5, 23.4, 23.5 mit dem Deckenrahmen 2 und mit dem Kabinendeckenteil 1 gekoppelt. Zudem sind die Drehrichtungen des ersten Knickarmepaars, bestehend aus den Knickarmen 20, 21, und des zweiten Knickarmepaars, bestehend aus den Knickarmen 22, 23, rechtwinklig zueinander ausgerichtet.In the second embodiment according to the FIGS. 4 to 6 The two subsystems each have an articulated pair of two articulated arms 20, 21 and 22, 23. Each articulated arm 20, 21, 22, 23 has two rod-shaped legs 20.1, 20.2, 21.1, 21.2, 22.1, 22.2, 23.1, 23.2, which are connected to each other via a rotary joint, 20.3, 21.3, 22.3, 23.3. The ends of the rod-shaped articulated arms are coupled by means of rotary bearings 20.4, 20.5, 21.4, 21.5, 22.4, 22.5, 23.4, 23.5 to the ceiling frame 2 and to the cabin ceiling part 1. In addition, the directions of rotation of the first Knickarmepaars, consisting of the articulated arms 20, 21, and the second Knickarmepar, consisting of the articulated arms 22, 23, aligned at right angles to each other.

Das erste Knickarmepaar hindert das Kabinendeckenteil 1 an einer Rotation um die x-Achse im x-y-z-Koordinatensystem und das zweite Knickarmepaar hindert das Kabinendeckenteil 1 an einer Rotation um die y-Achse, so dass das Kabinendeckenteil 1 stets waagrecht ausgerichtet bleibt.The first pair of articulated arms prevents the cabin ceiling part 1 from rotating around the x-axis in the xyz coordinate system and the second pair of articulated arms prevents the cabin ceiling part 1 from hindering on a rotation about the y-axis, so that the cabin ceiling part 1 always remains aligned horizontally.

Gemäss Figuren 7 bis 10 ist in der zweiten Ausführungsform mindestens ein Schenkelpaar, beispielsweise bestehend aus den Schenkeln 20.2, 21.2 des ersten und/oder zweiten Knickarmepaars mittels mindestens einer Querstrebe 24.1, 24.2, 25.1, 25.2 verbunden. Unter Schenkelpaar werden hier zwei Schenkel 20.2, 21.2 verstanden, die je Bestandteil eines Knickarms 20, 21, 22, 23 sind, auf gleicher Höhe angeordnet sind, d.h. beide entweder am Deckenrahmen 2 oder beide am Kabinendeckenteil 1 gekoppelt sind, und dem gleichen Knickarmepaar angehören.According to FIGS. 7 to 10 is in the second embodiment, at least one leg pair, for example, consisting of the legs 20.2, 21.2 of the first and / or second Knickarmepaars connected by at least one transverse strut 24.1, 24.2, 25.1, 25.2. Under pair of legs here are two legs 20.2, 21.2 understood that are each part of a Knickarms 20, 21, 22, 23, are arranged at the same height, ie both are either coupled to the ceiling frame 2 or both on the cabin ceiling part 1, and belong to the same Knickarmepaar ,

Denn um die Steifigkeit des Absenkmechanismus in der x-und y-Richtung sowie die Torsionssteifigkeit um die z-Achse zu erhöhen, sind die Knickarmepaare beispielsweise an ihren Schenkelpaaren mit den z.B: angeschweissten Querstreben 24.1, 24.2, 25.1, 25.2 ausgestattet. Diese Querstreben 24.1, 24.2, 25.1, 25.2 bewegen sich beim Absenkvorgang in unterschiedlichen Ebenen und sind geometrisch so gestaltet, dass keine Kollisionen während der Bewegung des Kabinendeckenteils 1 zwischen den Querstreben 24.1, 24.2, 25.1, 25.2 und den Schenkelpaaren unterschiedlicher Knickarmepaare stattfinden.Because in order to increase the rigidity of the Absenkmechanismus in the x and y direction and the torsional stiffness about the z-axis, the Knickarmepaare example, at their leg pairs with the example: welded crossbars 24.1, 24.2, 25.1, 25.2 equipped. These transverse struts 24.1, 24.2, 25.1, 25.2 move in the lowering process in different planes and are geometrically designed so that no collisions take place during the movement of the cabin ceiling part 1 between the cross struts 24.1, 24.2, 25.1, 25.2 and the pairs of legs different Knickarmepaare.

Die Figuren 7 bis 10 zeigen beispielhaft eine Ausführungsform mit acht Querstreben 24.1, 24.2, 25.1, 25.2. Je zwei Querstreben 24.1, 24.2, 25.1, 25.2 bilden dabei ein Querstrebenkreuz, das je ein Schenkelpaar eines Knickarmepaars verbindet. Es liegt jedoch im Ermessen des Fachmanns, wie viele Querstreben und in welcher Anordnung zwischen den Schenkelpaaren eingesetzt werden.The FIGS. 7 to 10 show an example of an embodiment with eight cross struts 24.1, 24.2, 25.1, 25.2. Each two cross struts 24.1, 24.2, 25.1, 25.2 form a cross strut cross, which each connects a leg pair of a Knickarmepaars. However, it is at the discretion of a person skilled in the art how many transverse struts and in which arrangement between the pairs of legs are used.

Figuren 14 bis 16 zeigen die zweite Ausführungsform mit mindestens einer Querstrebe 29, 30, die die Drehgelenke 20.3, 21.3 und 22.3, 23.3 jeweils eines Knickarmepaars miteinander verbindet. Diese mindestens eine zusätzlichen Querstrebe 29, 30 bewirkt eine weitere Verstärkung und Stabilisierung des Absenkmechanismus. Die mindestens eine zusätzlichen Querstrebe 29, 30 wird beispielsweise als Querverbindungsrohr realisiert. FIGS. 14 to 16 show the second embodiment with at least one transverse strut 29, 30, which connects the hinges 20.3, 21.3 and 22.3, 23.3 each of a Knickarmepaars together. This at least one additional transverse strut 29, 30 causes a further reinforcement and stabilization of the lowering mechanism. The at least one additional transverse strut 29, 30 is realized, for example, as a cross-connection tube.

In Figur 14 sind alle Schenkelpaare der Knickarmepaare gleichlang ausgebildet. Ein Knickarmepaar, beispielsweise bestehend aus den Knickarmen 20, 21, ist aufgesetzt mit dem Kabinendeckenteil 1 oder mit dem Deckenrahmen 2 gekoppelt. Dazu werden Unterlagselemente 31.1, 31.2, 32.1, 32.2, wie beispielsweise Abstandsbleche 32.1, Abstandsquader 31.1, 31.2, 32.2 oder Unterlagsscheiben verwendet. Diese Unterlagselemente 31.1, 31.2, 32.1, 32.2 sind oben auf dem Kabinendeckenteil 1 und oben auf dem Deckenrahmen 2 befestigt und dienen als erhöhte Kopplungspunkte der Knickarme 20, 21, 22, 23. Auf diese Weise kommen die beiden Querstreben 29, 30 auf unterschiedlichen Höhen zu liegen und bleiben beim Absenken des Absenkmechanismus kollisionsfrei.In FIG. 14 are all pairs of legs of Knickarmepaare equal length. An articulated pair, for example consisting of the articulated arms 20, 21, is mounted on the cabin ceiling part 1 or coupled to the ceiling frame 2. For this purpose, support elements 31.1, 31.2, 32.1, 32.2, such as spacer plates 32.1, spacing blocks 31.1, 31.2, 32.2 or washers used. These support elements 31.1, 31.2, 32.1, 32.2 are mounted on top of the cabin ceiling part 1 and on top of the ceiling frame 2 and serve as increased coupling points of the articulated arms 20, 21, 22, 23. In this way, the two transverse struts 29, 30 come at different heights lie and remain collision-free when lowering the lowering mechanism.

Gemäss Figuren 15 und 16 ist das obere Schenkelpaar eines ersten Knickarmepaars mit den Schenkeln 22.2, 23.2 kürzer als das obere Schenkelpaar eines zweiten Knickarmepaars mit den Schenkeln 20.2, 21.2. Durch die unterschiedliche Länge dieser Schenkelpaare resultieren unterschiedlich hohe Faltachsen der Knickarmepaare. Während der Absenkbewegung ist somit gewährleistet, dass die zusätzlichen Querstreben 29, 30 nicht mit Querstreben 24.1, 25.2 oder Schenkeln 20.1, 20.2, 21.1, 21.2, 22.1, 22.2, 23.1, 23.2 anderer Knickarmpaare kollidieren. In der hier gezeigten Ausführung ist nach wie vor ein Unterlagselement 33.1, 33.2, 34.1, 34.2 vorgesehen um die Kopplungspunkte der Knickarme 20, 21, 22, 23 am Kabinendeckenteil 1 oder Deckenrahmen 2 zu erhöhen. Der Unterschied in der Schenkellänge kann aber vom Fachmann so gewählt werden, dass auf Unterlagselement verzichtet werden kann.According to FIGS. 15 and 16 is the upper leg pair of a first Knickarmepaars with the legs 22.2, 23.2 shorter than the upper leg pair of a second Knickarmepar with the legs 20.2, 21.2. Due to the different length of these leg pairs result in different height folding axes of Knickarmepaare. During the lowering movement is thus ensured that the additional transverse struts 29, 30 do not collide with cross struts 24.1, 25.2 or legs 20.1, 20.2, 21.1, 21.2, 22.1, 22.2, 23.1, 23.2 other Knickarmpaare. In the here As shown, a pad element 33.1, 33.2, 34.1, 34.2 is still provided to increase the coupling points of the articulated arms 20, 21, 22, 23 on the cabin ceiling part 1 or ceiling frame 2. However, the difference in the leg length can be selected by the skilled person so that it is possible to dispense with a support element.

Gemäss Figuren 11 bis 16 verbindet in der zweiten Ausführungsform mindestens ein weiterer Knickarm 28 eine freie Ecke des Kabinendeckenteils 1 mit dem Deckenrahmen 2. Drei Ecken des Kabinendeckenteils 1 sind bereits durch die Knickarme 20, 21, 22, 23 festgehalten. Eine weitere Stabilisierung des Kabinendeckenteils 1 in abgesenkter Position wird mittels mindestens eines zusätzlichen Knickarms 28 gewährleistet, der die freie vierte Ecke des Kabinendeckenteils 1 mit dem Deckenrahmen 2 verbindet. Wegen der Ausgewogenheit des Absenkmechanismus wird wie in den Figuren 14 bis 16 gezeigt der zusätzliche Knickarm 28 vorzugsweise in einem 45° Winkel zu den anderen Knickarmen 20, 21, 22, 23 angeordnet. Gemäss den Figuren 11 bis 13 ist eine Anordnung des Knickarms 28, in der er parallel zur Knickachse des zweiten Knickarmepaars einknickt, auch möglich.According to FIGS. 11 to 16 connects in the second embodiment at least one further articulated arm 28 a free corner of the cabin ceiling part 1 with the ceiling frame 2. Three corners of the cabin ceiling part 1 are already held by the articulated arms 20, 21, 22, 23. A further stabilization of the cabin ceiling part 1 in the lowered position is ensured by means of at least one additional articulated arm 28 which connects the free fourth corner of the cabin ceiling part 1 with the ceiling frame 2. Because of the balance of the lowering mechanism is like in the FIGS. 14 to 16 shown the additional articulated arm 28 preferably arranged at a 45 ° angle to the other articulated arms 20, 21, 22, 23. According to the FIGS. 11 to 13 is an arrangement of the articulated arm 28, in which he collapses parallel to the bending axis of the second Knickarmepaars, also possible.

Vorzugsweise lässt sich die freie vierte Ecke durch das Anbringen eines zweiten zusätzlichen Knickarms weiter stabilisieren. Dabei liegen die Ausrichtung der Drehachse des ersten zusätzlichen Knickarms parallel zur Drehachse der Knickarme 20, 21 und die Ausrichtung der Drehachse des zweiten zusätzlichen Knickarms parallel zur Drehachse der Knickarme 22, 23.Preferably, the free fourth corner can be further stabilized by the attachment of a second additional articulated arm. The orientation of the axis of rotation of the first additional articulated arm are parallel to the axis of rotation of the articulated arms 20, 21 and the orientation of the axis of rotation of the second additional articulated arm parallel to the axis of rotation of the articulated arms 22, 23rd

Die Figuren 11 bis 13 zeigen die zweite Ausführungsform mit einem Gewichtausgleichsmechanismus. Dabei verfügt der Gewichtausgleichsmechanismus über mindestens einen Hebelarm 26.2, 27.2 sowie ein Rückstellelement 26.1, 27.1. Der Gewichtausgleichsmechanismus bezweckt eine teilweise Kompensation des Gewichts des Kabinendeckenteils 1 und des Absenkmechanismus, womit ein möglichst bequemes und sicheres Absenken und Heben des Kabinendeckenteils 1 unter Anwendung einer möglichst kleinen Handkraft erreicht wird.The FIGS. 11 to 13 show the second embodiment with a weight compensation mechanism. there the weight compensation mechanism has at least one lever arm 26.2, 27.2 and a return element 26.1, 27.1. The weight compensation mechanism aims at a partial compensation of the weight of the cabin ceiling part 1 and the lowering mechanism, whereby the most comfortable and safe lowering and lifting the cabin ceiling part 1 is achieved using a small hand force as possible.

Gemäss Figuren 11 bis 13 ist in der zweiten Ausführungsform mindestens ein oberer Schenkel 22.2, 23.2 eines Knickarms 22, 23 mit dem Hebelarm 26.2, 27.2 drehstarr gekoppelt. Der Kopplungswinkel zwischen jeweils einem Hebelarm 26.2, 27.2 und einem oberen Schenkel 22.2, 23.2 liegt vorzugsweise im Bereich von 0 bis 30°. Ein Rückstellelement 26.1, 27.1 koppelt einen Hebelarm 26.2, 27.2 und die Aufzugskabine 3 und übt eine Rückstellkraft auf den Hebelarm 26.2, 27.2 bzw. den oberen Schenkel 22.2, 23.2 aus. Vorzugsweise sind zwei Hebelarme 26.2, 27.2 mittels Zugfedern 26.1, 27.1 mit der Aufzugskabine 3 verbunden.According to FIGS. 11 to 13 is in the second embodiment, at least one upper leg 22.2, 23.2 of an articulated arm 22, 23 rotatably coupled to the lever arm 26.2, 27.2. The coupling angle between in each case a lever arm 26.2, 27.2 and an upper leg 22.2, 23.2 is preferably in the range of 0 to 30 °. A return element 26.1, 27.1 couples a lever arm 26.2, 27.2 and the elevator car 3 and exerts a restoring force on the lever arm 26.2, 27.2 and the upper leg 22.2, 23.2. Preferably, two lever arms 26.2, 27.2 are connected to the elevator car 3 by means of tension springs 26.1, 27.1.

Im gezeigten Beispiel wird ein Rückstellelement 26.1, 27.1 als Zugfeder ausgelegt. Dabei ist eine Zugfeder 26.1, 27.1 jeweils am oberen Ende des Hebels 26.2, 27.2 und seitlich aussen an den hinteren tragenden Eckprofilen der Aufzugskabine 3 befestigt. Alternativ zu den mechanischen Zugfedern 26.1, 27.1 liessen sich die Rückstellelemente auch als Gasfedern auslegen. Eine Anordnung mit Druckfedern ist ebenfalls möglich.In the example shown, a restoring element 26.1, 27.1 designed as a tension spring. In this case, a tension spring 26.1, 27.1 attached to the rear supporting corner profiles of the elevator car 3 at the upper end of the lever 26.2, 27.2 and laterally outside. As an alternative to the mechanical tension springs 26.1, 27.1, the return elements could also be designed as gas springs. An arrangement with compression springs is also possible.

Die Auslegung des Gewichtausgleichsmechanismus insbesondere die geometrischen Verhältnisse, die Massen der beweglichen Teile und die Federkonstanten der Federn sind so gewählt, dass sich der Kabinendeckenteil 1 mit einer manuellen Kraft von vorzugsweise weniger als ca. 100 N absenken oder heben lässt.The design of the weight compensation mechanism in particular the geometric relationships, the masses of the moving parts and the spring constants of the springs are chosen so that the cabin ceiling part 1 with a lower or lift manual power of preferably less than about 100 N.

Die Figur 17 zeigt den Kraft-Weg-Verlauf der aufzubringenden manuellen Kraft. Im gezeigten Beispiel durchläuft das Kabinendeckenteil folgende Absenk- und Hebeschritte:The FIG. 17 shows the force-displacement curve of the applied manual force. In the example shown, the cabin ceiling part goes through the following lowering and lifting steps:

Der Wartungstechniker löst im Innern der Aufzugskabine 3 eine Arretierung des absenkbaren Kabinendeckenteils 1. Dabei senkt sich das Teil 1 um beispielsweise ca. 150 mm bis zu einem oberen Gleichgewichtspunkt.The maintenance technician dissolves inside the elevator car 3 a locking of the lowerable cabin ceiling part 1. In this case, the part 1 is lowered by, for example, about 150 mm to an upper equilibrium point.

Der Wartungstechniker stellt sich in die Kabinentüröffnung und zieht das Kabinendeckenteil 1 vorzugsweise an ihrem vorderen Ende weiter nach unten, bis das Kabinendeckenteil 1 einen unteren Kraftumkehrpunkt bei ca. 770 mm Absenkung passiert hat. Beim Überschreiten des unteren Kraftumkehrpunktes bewegt sich der Kabinendeckenteil 1 von selber in seine untere ausgezogene Position bei ca. 950 mm. Der Wartungstechniker arretiert mindestens einen der vorderen Knickarme 20, 28, wobei ein Drehgelenk 20.3, 28.3 fixiert wird.The maintenance technician stands in the car door opening and pulls the cabin ceiling part 1 preferably at its front end further down until the cabin ceiling part 1 has passed a lower power reversal point at about 770 mm reduction. When exceeding the lower Kraftumkehrpunktes the cabin ceiling part 1 moves by itself in its lower extended position at about 950 mm. The maintenance technician locks at least one of the front articulated arms 20, 28, wherein a rotary joint 20.3, 28.3 is fixed.

Vorzugsweise befindet sich auf dem Kabinendeckenteil 1 eine Leiter 4. Nachdem der Kabinendeckteil 1 fertig abgesenkt ist, nimmt der Wartungstechniker die Leiter 4 vom Kabinendeckenteil 1 und steigt mittels der Leiter 4 auf den Kabinendeckenteil 1. Falls die übrigen Knickarme 21, 22, 23 noch nicht vollständig ausgestreckt waren, werden diese nun durch das Gewicht des Wartungstechnikers bis zum Anschlag ausgestreckt.Preferably, there is a ladder 4 on the cab roof part 1. After the cab roof part 1 is completely lowered, the service technician takes the ladder 4 from the cab roof part 1 and rises by means of the ladder 4 to the cab roof part 1. If the other articulated arms 21, 22, 23 are not yet fully outstretched, they are now stretched to the stop by the weight of the service technician.

Der Wartungstechniker kann nun aus der Aufzugskabine 3 heraus alle nötigen Wartungsarbeiten im Schacht vornehmen. Nach Abschluss der Wartungsarbeiten und Verlassen des Kabinendeckenteils 1 legt der Wartungstechniker die Leiter 4 wieder auf den Kabinendeckenteil 1.The maintenance technician can now make all the necessary maintenance work in the shaft out of the elevator car 3. After completing the maintenance work and leaving the cabin ceiling part 1, the service technician places the ladder 4 back on the cabin ceiling part 1.

In der Türöffnung stehend löst der Wartungstechniker die Arretierung des vorderen Knickarms 20, 28 und drückt diesen in das Kabinenzentrum hinein, bis der Kabinendeckenteil 1 den unteren Kraftumkehrpunkt bei ca. 750 mm passiert hat. Die übrigen Knickarme 21, 22, 23 sind vorzugsweise mit Rückstellfedern versehen, die sicherstellen, dass die Knickarme 21, 22, 23 zuverlässig in die vorgesehene Richtung hin zum Aufzugskabinenzentrum einknicken. Ab dem Gleichgewichtspunkt wird das Kabinendeckenteil 1 durch die Zugfedern 26.1, 27.1 in den oberen Gleichgewichtspunkt bei ca. 150 mm zurückgehoben. Je nach Systemreibung des Absenkmechanismus ist eventuell die Anwendung einer geringen Handkraft zum Erreichen des oberen Gleichgewichtspunkts nötig.Standing in the doorway, the maintenance technician releases the locking of the front articulated arm 20, 28 and pushes it into the cabin center until the cabin ceiling part 1 has passed the lower power reversal point at about 750 mm. The remaining articulated arms 21, 22, 23 are preferably provided with return springs, which ensure that the articulated arms 21, 22, 23 reliably buckle in the intended direction towards the elevator car center. From the equilibrium point the cabin ceiling part 1 is lifted by the tension springs 26.1, 27.1 in the upper equilibrium point at about 150 mm. Depending on the system friction of the lowering mechanism, it may be necessary to use a small hand force to reach the upper equilibrium point.

Der Wartungstechniker begibt sich nun in die Aufzugskabine 3 und drückt den Kabinendeckenteil 1 gegen die Federkraft der Zugfedern 26.1, 27.1 nach oben und arretiert das Kabinendeckenteil 1 in seiner oberen Ruheposition.The maintenance technician now goes into the elevator car 3 and pushes the cabin ceiling part 1 against the spring force of the tension springs 26.1, 27.1 upwards and locks the cabin ceiling part 1 in its upper rest position.

Die Figuren 18 und 19 stellen einen Aufzug 100 dar, der über eine Aufzugskabine 3 verfügt, die im Aufzugsschacht 40 verfahrbar ist. Dazu verfügt der Aufzug 100 desweiteren über mindestens ein Aufhänge- oder Traktionsmittel, an welchem die Aufzugskabine 3 aufgehängt ist, über einen Antrieb, der in Wirkkontakt mit dem Aufhänge- oder Traktionsmittel steht und die dieses Antreibt, über ein Gegengewicht, das ebenfalls am Aufhänge- oder Traktionsmittel aufgehängt ist und das Kabinengewicht ausgleicht, und über Führungsschienen, die die Aufzugskabine 3 im Aufzugsschacht 40 führt. Letztgenannte Aufzugskomponenten sind in den Figuren 18 und 19 aus Übersichtlichkeitsgründen nicht dargestellt.The Figures 18 and 19 illustrate an elevator 100, which has an elevator car 3, which is movable in the elevator shaft 40. For this purpose, the elevator 100 furthermore has at least one suspension or traction means, on which the elevator car 3 is suspended, via a drive which is in operative contact with the suspension or traction means and which drives the latter, via a counterweight, which is likewise suspended from the suspension. or traction means is suspended and balances the cabin weight, and guide rails, the elevator car 3 in the elevator shaft 40 leads. The latter elevator components are in the Figures 18 and 19 not shown for clarity.

Insbesondere zeigt die Figur 18 eine türlose Aufzugskabine 3 mit dem Kabinendeckenteil 1 in seiner Ruheposition und mit zusammengefaltetem Absenkmechanismus. Der bewegliche Teil der Decke, das Kabinendeckenteil 1 und der Absenkmechanismus ist am Dachrahmen 2 aufgehängt und vorzugsweise mittels eines Bolzens, Riegels oder dergleichen arretiert. Der Deckenrahmen 2 ist vorzugsweise an vier Eckprofilen der Aufzugskabine 3 befestigt. Die Figur 19 zeigt die Aufzugskabine 3 mit dem Kabinendeckenteil 1 in seiner abgesenkten Position.In particular, the shows FIG. 18 a doorless elevator car 3 with the cabin ceiling part 1 in its rest position and with collapsed lowering mechanism. The movable part of the ceiling, the cabin ceiling part 1 and the lowering mechanism is suspended from the roof frame 2 and preferably locked by means of a bolt, bolt or the like. The ceiling frame 2 is preferably attached to four corner profiles of the elevator car 3. The FIG. 19 shows the elevator car 3 with the cabin ceiling part 1 in its lowered position.

Die absenkbare Kabinendecke ist in den obigen Ausführungsbeispielen in der Anwendung als Wartungsplattform beschrieben. Diese Kabinendecke lässt sich jedoch mit geringfügigen Adaptionen auch für andere Zwecke einsetzen. Beispielsweise ist die absenkbare Kabinendecke auch als Evakuationsplattform für den Ausstieg aus einer stillstehenden Aufzugskabine oder als Sicherheitseinrichtung zur Einhaltung eines Sicherheitsraumes oberhalb der Aufzugskabine, insbesondere bei reduzierter Höhe des Schachtkopfraumes.The lowerable car ceiling is described in the above embodiments in the application as a maintenance platform. However, this cabin ceiling can also be used for other purposes with minor adaptations. For example, the lowerable car ceiling is also an evacuation platform for the exit from a stationary elevator car or as a safety device for maintaining a security space above the elevator car, especially at reduced height of the shaft headspace.

Beim Einsatz der absenkbaren Kabinendecke als Evakuationsplattform ist primär den geänderten Platzanforderungen Rechnung zu tragen. Denn beim Ausstieg eingeschlossener Passagiere aus einer Aufzugskabine ist der absenkbare Kabinendeckenteil so zu konzipieren, dass ein Passagier auch bei geschlossenen Kabinentüren die Oberseite des Kabinendeckenteils vom Innern der Aufzugskabine erreichen kann. Ist bei Wartungsarbeiten eine möglichst grosse Grundfläche des Kabinendeckenteils von Vorteil, ist bei der Dimensionierung des Kabinendeckenteils als Evakuationsplattform darauf zu achten, dass bei abgesenktem Kabinendeckenteil ein Passagier aufrecht neben dem Kabinendeckenteil stehen kann. Es ist vorteilhaft, wenn das Kabinendeckenteil nur etwa die Hälfte der im Kabineninnern verfügbaren Grundfläche ausschöpft. Damit bleibt gewährleistet, dass ein Passagier beispielsweise mittels einer Leiter das Kabinendeckenteil besteigen und von dort auf das Kabinendach gelangen kann. Die Leiter befindet sich wie im obigen Beispiel vorzugsweise auf der Oberseite des Kabinendeckenteils.When using the lowerable cabin ceiling as an evacuation platform, the changed space requirements must be taken into account primarily. For when leaving enclosed passengers from an elevator car, the lowerable cabin ceiling part is to be designed so that a passenger can reach the top of the cabin ceiling part from the interior of the elevator car even with the cabin doors closed. Is one possible during maintenance work large base surface of the cabin ceiling part of advantage, is in the dimensioning of the cabin ceiling part as an evacuation platform to ensure that when lowered cabin ceiling part, a passenger can stand upright next to the cabin ceiling part. It is advantageous if the cabin ceiling part only uses about half of the floor space available in the cabin interior. This ensures that a passenger, for example, by means of a ladder board the cabin ceiling part and can get from there to the cabin roof. The ladder is preferably on the top of the cabin ceiling part, as in the above example.

Die Evakuationsplattform ist vorzugsweise ebenfalls mit einem Gewichtausgleichsmechanismus ausgerüstet, damit das Kabinendeckenteil sicher und unter Aufwendung geringster Handkraft betätigbar ist. Dazu eignet sich ein Gewichtausgleichsmechanismus der zuvor beschriebenen Bauart mit einem Hebelarm und einem Rückstellelement mit einem vergleichbaren Kraft-Weg-Verlauf. Die Einstellung des Rückstellelements und die Anordnung der Elemente des Gewichtausgleichsmechanismus folgen unter Berücksichtigung der geänderten Gewichtsverhältnisse des verkleinerten Kabinendeckenteils.The evacuation platform is preferably also equipped with a weight-balancing mechanism so that the cab top part can be operated safely and with the least manual effort. For this purpose, a weight compensation mechanism of the type described above is suitable with a lever arm and a return element with a comparable force-displacement curve. The adjustment of the return element and the arrangement of the elements of the weight balance mechanism follow, taking into account the changed weight ratios of the reduced cabin ceiling part.

Beim Einsatz der absenkbaren Kabinendecke als Sicherheitseinrichtung ist eine möglichst grosse Grundfläche des Kabinendeckenteils von Vorteil. Denn die Sicherheitseinrichtung soll beim Betreten des Kabinendachs durch eine unbefugte Person zuverlässig einen Sicherheitsraum eines virtuellen Quaders mit einer Grundfläche von mindestens 0.6 auf 0.8 m und einer Höche von mindestens 0.5 m gewährleisten. Dazu senkt sich der Kabinendeckenteil nach Betreten desselben ins Innere der Aufzugskabine ab.When using the lowerable cabin ceiling as a safety device, the largest possible base area of the cabin ceiling part is advantageous. Because the safety device to enter the cabin roof by an unauthorized person reliably a security room of a virtual cuboid with a floor area of at least 0.6 to 0.8 m and a Höche of at least 0.5 m guarantee. For this purpose, the cabin ceiling part lowers after entering the interior of the elevator car.

Vorzugsweise verfügt die Sicherheitseinrichtung über einen modifizierten Gewichtausgleichsmechanismus, der einen angepassten Kraft-Weg-Verlauf besitzt. Der Gewichtausgleichsmechanismus ist beispielsweise so einstellbar, dass eine Rückstellkraft über den ganzen Absenkweg des Kabinendeckenteils wirkt. So erfolgt der Absenkvorgang des Kabinendeckenteils gebremst, damit weder Personen im Kabineninnern noch die Person, die sich auf dem Kabinendach befindet, zu Schaden kommen. Anstelle der Zugfeder aus obigem Beispiel ist auch der Einsatz eines Dämpfers oder einer Feder-Dämpfer-Kombination möglich.Preferably, the safety device has a modified weight compensation mechanism, which has an adapted force-displacement curve. The weight compensation mechanism is for example adjustable so that a restoring force acts over the entire lowering path of the cabin ceiling part. Thus, the lowering of the cabin ceiling part is braked so that neither persons inside the cabin nor the person who is on the canopy come to harm. Instead of the tension spring from the above example, the use of a damper or a spring-damper combination is possible.

Vorzugsweise verfügt die Sicherheitseinrichtung zudem über eine Auslöseautomatik zum Lösen der Arretierung des Kabinendeckenteils. Dabei umfasst die Auslöseautomatik mindestens eine Sensorik zum Feststellen der Anwesenheit einer Person auf dem Kabinendach sowie einer Stelleinheit zum Öffnen der Arretierung. Als Sensorik eignen sich Infrarotsensoren, Drucksensoren, Bewegungsmelder, Tretschalter und dergleichen.Preferably, the safety device also has a triggering mechanism for releasing the locking of the cabin ceiling part. In this case, the automatic triggering system comprises at least one sensor for detecting the presence of a person on the car roof and an actuator for opening the lock. Suitable sensors are infrared sensors, pressure sensors, motion detectors, pedal switches and the like.

In einer besonders einfachen Ausführungsform verfügt die Sicherheitseinrichtung über keine Auslöseautomatik. Es ist auch keine Arretierung des Kabinendeckenteils vorgesehen. In dieser Ausführungsform ist jedoch eine Auslegung des Gewichtausgleichsmechanismus vorgesehen, der das Kabinendeckenteil in der Ruheposition gegen einen Anschlag presst. Erst nachdem die sich unbefugt auf dem Kabinendach aufhaltende Person auf den Kabinendeckenteil tritt, senkt sich das Kabinendeckenteil durch die zusätzliche Gewichtskraft der Person ins Innere der Aufzugskabine.In a particularly simple embodiment, the safety device has no automatic triggering. There is also no locking of the cabin ceiling part provided. In this embodiment, however, a design of the weight compensation mechanism is provided, which presses the cabin ceiling part in the rest position against a stop. Only after the person sitting on the car roof unauthorized person steps on the cabin ceiling part, the cabin ceiling part lowers by the additional weight of the person inside the elevator car.

Besonders vorteilhaft ist der gleichzeitige Einsatz der absenkbaren Kabinendecke für unterschiedliche Zwecke. So kann die absenkbare Kabinendecke als Wartungsplattform und/oder Evakuationsplattform und/oder als Sicherheitseinrichtung verwendet werden.Particularly advantageous is the simultaneous use of the lowerable cabin ceiling for different purposes. Thus, the lowerable car ceiling can be used as a maintenance platform and / or evacuation platform and / or as a safety device.

Claims (10)

  1. Lift cage roof with
    - a cage roof part (1), which is a component of the lift cage roof,
    - a roof frame (2), which frames the cage roof part (1),
    - a mechanism, which connects the cage roof part (1) with the roof frame (2) and at
    which the cage roof part (1) is lowerable from an upper rest position to a lower rest position in the interior of the lift cage (3) and
    - at least two subsystems, which are components of the mechanism, wherein one subsystem comprises at least two rod-shaped elements (10, 11, 12, 13; 20, 21, 22, 23) which prevent the cage roof part (1) from rotation about a horizontal axis (x, y) of the cage roof part (1) and which are rotationally coupled with the cage roof part (1) and the roof frame (2),
    wherein first coupling points (20.4, 21.4) of the at least two rod-shaped elements rod-shaped elements (10, 11, 12, 13; 20, 21, 22, 23) of a first subsystem lie together with the cage roof part (1) on a first straight line and second coupling points (22.4, 23.4) of the at least two rod-shaped elements (10, 11, 12, 13; 20, 21, 22, 23) of a second subsystem lie together with the cage roof part (1) on a second straight line, wherein the first and second straight lines intersect,
    characterised in that at least one subsystem comprises a restoring element (26.1, 27.1) which assists a lowering movement as far as an upper point of equilibrium, between the upper point of equilibrium and a lower point of force reversal opposes the lowering movement, and assists the lowering movement from the lower point of the force reversal.
  2. Lift according to claim 1, wherein the rod-shaped elements (10, 11, 12, 13; 20, 21, 22, 23) of the subsystems, which lie below the roof frame, do not depart from a clear space, which the cage roof part (1) runs through during the lowering process from the upper rest position to the lower rest position, during the lowering process.
  3. Lift according to claim 1 or 2, wherein the two subsystems each comprise two folding arms (20, 21; 22, 23), which respectively form a first and a second folding arm pair, each folding arm (20, 21, 22, 23) consisting of two rod-shaped limbs (20.1, 21.1, 22.1, 23.1, 20.2, 21.2, 22.2, 23.2), which are connected together by way of a rotary joint (20.3, 21.3, 22.3, 23.3), wherein ends of the rod-shaped folding arms (20, 21, 22, 23) are coupled with the roof frame (2) and with the cage roof part (1) by means of rotary joints (20.4, 21.4, 22.4, 23.4, 20.5, 21.5, 22.5, 23.5) and wherein a rotational direction of the first folding arm pair and a rotational direction of the second folding arm pair are oriented at right angles to one another.
  4. Lift according to claim 3, wherein at least two limbs (20.1, 21.1, 22.1, 23.1, 20.2, 21.2, 22.2, 23.2) of the first and/or second folding arm pair are connected by means of at least one transverse strut (24.1, 24.2, .25.1, 25.2).
  5. Lift according to one of claims 3 and 4, wherein two upper limbs (20.2, 21.2, 22.2, 23.2) of the first folding arm pair are shorter than two upper limbs (20.2, 21.2, 22.2, 23.2) of the second folding arm pair.
  6. Lift according to claim 5, wherein the rotary joints (20.3, 21.3, 22.3, 23.3) of at least one folding arm pair are connected by means of a transverse strut (29, 30).
  7. Lift according to any one of claims 3 to 6, wherein at least one further folding arm (28, 29) connects a free corner of the cage roof part (1) with the roof frame (2).
  8. Lift according to any one of claims 3 to 7, wherein at least one upper limb (22.2, 23.2) of a folding arm (22, 23) is coupled with a lever arm (26.2, 27.2) to be secure against relative rotation and wherein a restoring element couples the lever arm (26.2, 27.2) and the lift cage (3) and exerts a restoring force on the lever arm (26.2, 27.2).
  9. Lift cage (3) with a lift cage roof according to any one of claims 1 to 8.
  10. Lift cage with a lift cage according to claim 9.
EP10734075.4A 2009-07-21 2010-07-07 Lift cabin ceiling with an element which can be lowered Not-in-force EP2456704B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP10734075.4A EP2456704B1 (en) 2009-07-21 2010-07-07 Lift cabin ceiling with an element which can be lowered

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP09166016A EP2277817A1 (en) 2009-07-21 2009-07-21 Lift with a cabin ceiling element that can be lowered
EP10734075.4A EP2456704B1 (en) 2009-07-21 2010-07-07 Lift cabin ceiling with an element which can be lowered
PCT/EP2010/059681 WO2011009716A1 (en) 2009-07-21 2010-07-07 Elevator with a lowerable car cover

Publications (2)

Publication Number Publication Date
EP2456704A1 EP2456704A1 (en) 2012-05-30
EP2456704B1 true EP2456704B1 (en) 2016-04-27

Family

ID=41314692

Family Applications (2)

Application Number Title Priority Date Filing Date
EP09166016A Withdrawn EP2277817A1 (en) 2009-07-21 2009-07-21 Lift with a cabin ceiling element that can be lowered
EP10734075.4A Not-in-force EP2456704B1 (en) 2009-07-21 2010-07-07 Lift cabin ceiling with an element which can be lowered

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP09166016A Withdrawn EP2277817A1 (en) 2009-07-21 2009-07-21 Lift with a cabin ceiling element that can be lowered

Country Status (2)

Country Link
EP (2) EP2277817A1 (en)
WO (1) WO2011009716A1 (en)

Cited By (3)

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US11104550B2 (en) 2018-02-27 2021-08-31 Otis Elevator Company Elevator car and elevator system comprising an elevator car
US11292696B2 (en) 2018-07-30 2022-04-05 Otis Elevator Company Elevator car
US11427441B2 (en) 2020-07-23 2022-08-30 Otis Elevator Company Elevator car with foldable working platform

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Publication number Priority date Publication date Assignee Title
ES2460290B1 (en) * 2012-11-12 2014-11-18 Rubén PALOMINO BUSTOS Roof system with vertical displacement for elevator
US20160130115A1 (en) * 2014-11-07 2016-05-12 Richard C. BLASKA Retractable overhead access platform for machine room less elevator systems
AT517871B1 (en) * 2015-10-16 2017-12-15 Norbert Steiner car
AT15711U1 (en) * 2016-05-19 2018-04-15 Steiner Norbert car
ES2865161T3 (en) 2016-07-15 2021-10-15 Kone Corp Elevator and lift arrangement
CN109476459A (en) * 2016-07-15 2019-03-15 通力股份公司 Lift appliance
EP3505483A1 (en) * 2018-01-02 2019-07-03 KONE Corporation An elevator car
EP3760564B1 (en) * 2019-07-05 2023-05-17 Otis Elevator Company Elevator car with working platform stabilisation
EP3786095A1 (en) * 2019-08-27 2021-03-03 Otis Elevator Company Low overhead compensatory measure
EP4286314A1 (en) 2022-06-03 2023-12-06 Otis Elevator Company Elevator car with blocking member for foldable working platform
EP4303164A1 (en) 2022-07-04 2024-01-10 OTIS Elevator Company Elevator car with foldable working platform

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09263372A (en) * 1996-03-28 1997-10-07 Mitsubishi Denki Bill Techno Service Kk Car ceiling elevatable device for elevator
DE10104351A1 (en) 2001-02-01 2002-08-22 Ingenieurgesellschaft Foerder Lift (elevator) with drive and control units traveling with cabin has these units mounted on cabin roof
EP1760029A1 (en) * 2005-08-30 2007-03-07 Inventio Ag Elevator car comprising a maintenanec platform and method for servicing an elevator system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11104550B2 (en) 2018-02-27 2021-08-31 Otis Elevator Company Elevator car and elevator system comprising an elevator car
US11292696B2 (en) 2018-07-30 2022-04-05 Otis Elevator Company Elevator car
US11427441B2 (en) 2020-07-23 2022-08-30 Otis Elevator Company Elevator car with foldable working platform

Also Published As

Publication number Publication date
EP2277817A1 (en) 2011-01-26
EP2456704A1 (en) 2012-05-30
WO2011009716A1 (en) 2011-01-27

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