WO2011000064A1 - Système et procédé d'actionnement de portes d'ascenseur - Google Patents

Système et procédé d'actionnement de portes d'ascenseur Download PDF

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Publication number
WO2011000064A1
WO2011000064A1 PCT/BR2009/000193 BR2009000193W WO2011000064A1 WO 2011000064 A1 WO2011000064 A1 WO 2011000064A1 BR 2009000193 W BR2009000193 W BR 2009000193W WO 2011000064 A1 WO2011000064 A1 WO 2011000064A1
Authority
WO
WIPO (PCT)
Prior art keywords
subassembly
accordance
elevator door
fact
trolley
Prior art date
Application number
PCT/BR2009/000193
Other languages
English (en)
Inventor
Laercio Papini
Eduardo Magalhães CALDEIRA
Original Assignee
Otis Elevator Company
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Otis Elevator Company filed Critical Otis Elevator Company
Priority to PCT/BR2009/000193 priority Critical patent/WO2011000064A1/fr
Publication of WO2011000064A1 publication Critical patent/WO2011000064A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B13/00—Doors, gates, or other apparatus controlling access to, or exit from, cages or lift well landings
    • B66B13/02—Door or gate operation
    • B66B13/06—Door or gate operation of sliding doors
    • B66B13/08—Door or gate operation of sliding doors guided for horizontal movement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B13/00—Doors, gates, or other apparatus controlling access to, or exit from, cages or lift well landings
    • B66B13/02—Door or gate operation
    • B66B13/14—Control systems or devices
    • B66B13/16—Door or gate locking devices controlled or primarily controlled by condition of cage, e.g. movement or position
    • B66B13/165—Door or gate locking devices controlled or primarily controlled by condition of cage, e.g. movement or position electrical

Definitions

  • the present invention refers to elevator door systems and more particularly, to drive mechanisms for doors made of panels that move horizontally in the same direction for opening and closing the access doorway to the elevator car.
  • each panel has a front edge and a back edge, as well as a header that is fixed to a support trolley that moves along a track to effect the opening and closing of the door.
  • the width of each panel usually equals half the opening of the access doorway.
  • the first panel In the closed position, the first panel has its front edge positioned substantially coincident with the first column of the doorway, and its back edge approximately coincident with the front edge of the second panel. The back edge of the latter, in turn, is positioned substantially coincident with the second column.
  • the opening cycle includes movement of the panels in the same direction, to one side of the doorway.
  • the first panel moves away from the first column toward the second column, the movement of the second panel being in the same direction, i.e., also toward the second column.
  • the front edges of both panels are in approximately coincident position with the second column, leaving the opening of the access doorway clear between the elevator car and the landing of the floor where it is stopped.
  • the path traveled by the first panel during the cycles of opening and closing is approximately equal to the opening between the columns that delimit the mentioned doorway, as its front edge will run the entire distance between the columns.
  • the path of the second panel is approximately half that of the first panel, since the movement of its front edge is limited to- the distance between the second column and the center of the doorway.
  • the panels move simultaneously at different speeds in order to complete their runs at the same time.
  • the time that the front edge of the first panel takes to travel between columns is equal to the time needed by the front edge of the second panel to go half that distance. Consequently, both the opening and closing cycles of the first panel move at twice the speed of the second panel, so that the beginning and end of the movement coincide in time for both.
  • U.S. Patent 5,584,365 proposes the use of an independent electromechanical device to drive each panel.
  • One of the advantages of independent movement of the door panels lies in the fact that the kinetic energy of the assembly is reduced by moving the masses of these panels independently of each other. This allows the speed of closing the door to be increased without exceeding the limits imposed by safety standards with respect to the maximum kinetic energy allowed.
  • the system proposed in this document presents considerable complexity, due to the need for the second electromechanical drive and means to coordinate its actions with those of the first electromechanical drive, and this complexity is reflected in higher cost.
  • This fast trolley drives the slow trolley 3 by means of a mechanical coupling made up of two pulleys 5 mounted on the ends of this trolley and a steel cable 12 going around these pulleys to form a closed link, having an intermediate point of one of its loops locked to a fixed anchor 13, as shown in Figure 1, and in more detail in Figure 2, which is a reproduction of Figure 3 in WO 2008/034915.
  • the opposite loop in this case, the top one, has an intermediate point attached to a pin 14 that is fixed to the fast trolley (not shown in Figure 2).
  • the pulleys 5 have a peripheral channel that fits in the rail 9 provided on the lower branch of support beam 1 with "C" section.
  • the arrangement illustrated makes it so that the assembly consisting of trolley 2 and pulleys 5 affixed to it are moved at half the displacement speed of pin 14, that is, of fast trolley 2.
  • the apparatus proposed in the patent document is simpler than that described in U.S. 5,584,365. Nevertheless, with time in use, the cable could unravel or fray, producing an irregular movement of the slow trolley or even stopping it if the cable slips out of one of the pulley grooves or breaks. Also, wear on the axles of the pulleys 5 may be aggravated by the fact of being subjected to forces in two directions, namely, vertical from the weight of the slow panel, and horizontal caused by the necessary tensioning of the cable.
  • the present invention aims to resolve one or more of the aforementioned issues that pertain to conventional door driving systems.
  • An embodiment of the present invention addresses a drive system of an elevator door.
  • the drive system includes, among other possible things, at least two subassemblies and a releasable engagement device between the subassemblies.
  • the at least two door subassemblies which move sideways and in the same direction to open and close a doorway, include a first assembly and a second subassembly.
  • the first subassembly comprises a first panel affixed to a first trolley and is configured to move between a first stop and a second stop along a track that extends across the doorway.
  • the second subassembly comprises a second panel affixed to a second trolley and is configured to move along the track.
  • the releasable engagement device between the subassemblies includes a first engagement member affixed to the first trolley and a second engagement member affixed to the second trolley.
  • the first and second engagement members are configured to be coupled by a force of mutual attraction and/or mechanical interaction of such first and second engagement members when the trolleys are impelled against each other.
  • the first and second engagement members are configured to be decoupled by application of a force that is configured to overcome the force of mutual attraction and/or mechanical interaction.
  • Figures 1 and 2 illustrate a prior art system for driving the door, in accordance with patent document WO 2008/034915.
  • Figure 3 is an exploded view that illustrates the main elements of a first embodiment of a drive system for an elevator door according to the invention.
  • Figure 4 shows the elements of the embodiment shown in Figure 3 in positions where they are ready to operate the door, which is in the closed position.
  • Figures 5-a to 5-e illustrate various stages in a sequence for the elevator door opening and closing operation for the embodiment shown in Figure 3.
  • Figures 7-a to 7-e schematically illustrate various stages in a sequence for the elevator door opening and closing operation for the embodiment corresponding to Figure 3 and the schematic of Figure 6.
  • Figure 8 is a simplified schematic representation of an elevator door in a second embodiment of the invention.
  • Figures 9-a to 9-f schematically illustrate various stages in a sequence for the elevator door opening and closing operation for the second embodiment of the invention that is diagrammed in Figure 8.
  • Figure 10 illustrates an attachment detail of magnetic elements according to an embodiment of the invention.
  • Figures 11 -a to 11-f schematically illustrate various stages in a sequence for the door opening and closing operation according to a third embodiment of the invention.
  • Figure 12 illustrates use of a magnetic field generator to facilitate decoupling of the door panels of any one or more of the foregoing embodiments.
  • FIGS 13 -a to 13-d illustrate an alternative embodiment of the invention, in which the coupling is provided by mechanical coupling means.
  • Figure 14 illustrates the use of a magnetic field generator to facilitate the engagement operation provided by means of the mechanical coupling embodiment of Figures 13-a to 13-d.
  • Figures 15-a to 15-c illustrate in simplified form the use of an alternative mechanical coupling on an elevator door in accordance with another embodiment of the invention.
  • FIGs 16-a to 16-g detail operation of the mechanical coupling of the embodiment shown in Figures 15-a to 15-c.
  • the proposed system consists of two subassemblies 20 and 30.
  • the first subassembly 20 is made up of a first door panel 21 that extends through the height of the access doorway, this panel being suspended by attachment means provided in its header to the first trolley 22 that moves horizontally on track 40.
  • This panel consists of a first vertical edge 25, also known as the front edge and a second vertical edge 26 referred to as the back edge.
  • the second subassembly 30 consists of a second door panel 31 that extends through the height of the doorway and that will be suspended by its header to the second trolley 32 that moves horizontally on track 40, on a path parallel to that of the first trolley.
  • This second panel consists of a first vertical edge, or front edge 37 and a second vertical edge, or back edge 38, this edge being supplied with a flange 38' provided by bending the panel plate.
  • track 40 is supported by a column41 (which also serves as a stop) at its first end and a columns41 ' (shown only in Figure 4) at its second end (also shown in Figure 4).
  • the system also comprises a stop 43 placed in approximate coincidence with a first doorway jamb and a stop 44 approximately positioned at a second doorway jamb.
  • the second trolley 32 is provided at its front and back ends, with angle brackets 33 and 34 to which the permanent magnets 35 and 36 are affixed.
  • the first trolley 22, is provided at its back end with an angle bracket 23 whose flange 24 is aligned with said permanent magnets 35, 36 and located on the same axis 27.
  • This angle bracket 23, including flange 24, is made of a ferromagnetic material, such as steel plate or equivalent.
  • Figure 5-a illustrates the beginning of the door opening when the first subassembly 20, which comprises panel 21, is driven in the direction indicated by arrow 47A.
  • This impulse may be provided by an electromechanical drive to which the subassembly is connected, or if the door is installed on a floor, by the temporary link between subassembly 20 and the corresponding subassembly of the panel (not shown) on the door of the elevator car, when it is stopped at that floor.
  • the driven first subassembly 20 causes the front edge 25 to move away from stop 44.
  • both the above subassemblies are jointly and rigidly linked and operate as one unit at this stage of the door opening operation.
  • Figure 5-c illustrates completion of the door opening operation: at the end of the movement of subassembly 20, when the back edge 26 of panel 21 is substantially aligned with the back edge of panel 31, the two panels 21 and 31 substantially overlapping, subassembly 20 is now stopped, as symbolized by arrow 48 A.
  • the front edge 25 of panel 21 is substantially aligned with the front edge 37 of panel 31, the position of both these edges coinciding with the jamb of the doorway 50.
  • flange 24 associated with trolley 22 comes into contact and is magnetically linked with the permanent magnet 36 aligned with the back edge of panel 31 , to form a new, secondary engagement between these subassemblies 20, 30.
  • Second subassembly 30 continues to be moved together with first subassembly 20 to the point where flange 38' of panel 31 halts at fixed stop 43, this second subassembly 30 then being immobilized, symbolized by arrow 48B, as shown in Figure 5-e. Because trolley 22 continues to be driven in the direction of closing the door, a force, which is greater than that of the force of magnetic attraction between flange 24 of the trolley 22 and the magnet 36 of trolley 32 provides the separation of the flange 24 from the magnet 36.
  • Figure 5- e shows the stage after this separation, in which first subassembly 20 continues in its movement toward stop 44, as indicated by arrow 49A.
  • Figures 6 and 7 show a schematic graphically representing operation of the system being proposed.
  • Figure 6 which corresponds to the perspective view of Figure 4, shows subassemblies 20 and 30 and the elements involved in operation of the system, highlighting the following:
  • first permanent magnet 35 mounted on angle bracket 33, substantially aligned with front edge 37 of panel 31 of second subassembly 30;
  • flange 24 and magnet 35 are in physical contact in the closed position, forming a magnetic coupling v m that acts as a rigid engagement between subassemblies 20 and 30.
  • Figure 7-a illustrates the start of the door opening operation by applying an impulse to first subassembly 20, as arrow 47A suggests. Because of the presence of magnetic coupling v m , this impulse is transferred to second subassembly 30, which moves jointly with first subassembly 20, at the same speed and in the same direction, indicated by arrow 47B.
  • Figure 7-b shows the situation after the movement of second subassembly 30 has been halted by contact between back edge 38 of this subassembly and the end-of-course stop consisting of column 41.
  • first subassembly 20 may now move independently at speed 47A.
  • the end of the movement of the first subassembly 20 occurs at the end of the approach of this subassembly to the end-of-course stop consisting of column 41, when flange 24 aligned with back edge 26 (not referenced in the figure) bears against second magnet 36.
  • both subassemblies 20, 30 are stopped, with the access doorway 50 of the door fully open. Also, because of contact between flange 24 and magnet 36, a second magnetic coupling v' m is formed, creating a rigid link between the two subassemblies 20, 30 that are mutually engaged.
  • second permanent magnet 36 is not installed on trolley 32.
  • fixed magnet 36' is attached to angle bracket 51, which is in turn installed on track 40, in a position substantially aligned with column 41, which serves as the stop delimiting the end of the route traveled by trolleys 22 and 32.
  • magnet 36' is also aligned with axis 53 which passes through flange 52 of angle bracket 34, this piece being made of ferromagnetic material.
  • the situation is similar to that shown in Figure 6 with the magnetic coupling v m , forming a rigid engagement between the first and second subassemblies 20, 30.
  • Figure 9-b illustrates a situation in which the second subassembly 30 has reached the end of its course, where flange 52 makes contact with magnet 36' aligned with column 41, which serves as the stop.
  • the contact between flange 52 and magnet 36' creates a magnetic coupling v" m .
  • the attraction force of magnetic coupling v m is overcome and first subassembly 20 continues its movement toward upright 41, as indicated by arrow 47 A. Movement of the first subassembly 20 stops when flange 24 (substantially aligned with back edge 26 of first subassembly 20) bears against flange 52 of second subassembly 30, which is already stopped.
  • Figure 9-c shows this condition, which corresponds to complete opening of access doorway 50 of the elevator. Observe that, in addition to the magnetic coupling v" m between this " flange 52 and magnet 36', there is an additional magnetic link (not shown) between flange 24 and the magnet 36', but weaker than magnetic coupling v" m .
  • the closing operation begins with application of an impulse to first subassembly 20, which moves in the direction indicated by arrow 49A in Figure 9-d. Contrary to what occurs in the first embodiment of the invention (see Figure 7-d), subassembly 30 remains coupled to magnet 36' via magnetic coupling v" m , which is stronger than the bond between the magnet 36' and flange 24, which disengages with relative ease when first subassembly 20 is driven. Movement of second subassembly 30 begins only when flange 24 contacts magnet 35, with the consequent restoration of magnetic coupling v m , as shown in Figure 9-e.
  • subassembly 30 will be moved together with subassembly 20 at the same speed 49B, in the direction of closing the doorway, this closure being accomplished when front edge 25 of the first subassembly 20 comes into contact with stop 44 and the flange 38' of the second subassembly 30 comes into contact with fixed stop 43, as shown in Figure 9-f.
  • FIG. 11 illustrates yet another embodiment of the invention, in which the flange of ferromagnetic material 24' interacts with permanent magnet 36 positioned substantially in alignment with the back edge 38 of second subassembly 30.
  • the operations of opening and closing the door are carried out in two phases, one phase of movement together in which both subassemblies 20, 30 are rigidly coupled and move together at the same speed, and a phase of independent movement, in which second subassembly 30 is uncoupled from first subassembly 20, and *only first subassembly 20 moves while the second subassembly remains immobile.
  • the opening operation consists of the first phase of movement together and afterward the phase of independent movement.
  • the closing operation of the embodiment in Figures 7-a to 7e consists of an initial phase of movement together, as shown in Figure 7-d, followed by a phase of independent movement as subassembly 20 moves and subassembly 30 is immobile.
  • an initial phase of independent movement precedes a phase of moving together.
  • door opening includes an initial phase of independent movement, in that only subassembly 20 moves, followed by a phase of movement together, shown in Figure 11-c, in which both subassemblies move together to complete opening of the doorway 50.
  • the closing operation is similar to that of the embodiment shown in Figures 7-a to 7-e, that is, a first phase of movement together followed by a second phase of independent movement.
  • FIG. 12 is a principle diagram that illustrates in simplified and schematic form the use of a magnetic field generator (i.e., electromagnet) 55, symbolized by a coil, placed in the position where decoupling needs to occur between subassemblies 20 and 30 during the door opening operation.
  • the magnetic field generator 55 is arranged so that when energized, it generates its field opposite the field of the permanent magnet 35.
  • a control circuit feeds the generator a pulse of current, resulting in weakening or even canceling the magnetic bond between the flange 24 and the permanent magnet 35 that formed the engagement between the subassemblies 20, 30.
  • the mutual disengagement of the subassemblies 20, 30 will require a smaller impulsive force applied to subassembly 20, reducing the mechanical strain on the system.
  • Figures 13-a to 13-d show, in schematic and simplified form, one of the possible ways of embodying this type of device that consists of two mechanical engagement parts 60 and 70 affixed, respectively, to trolleys 22 and 32.
  • the first part 60 consists of a flange 61 and a retention element provided in this case by a cylindrical retention pin 62.
  • the second part 70 consists of a base plate 71, to which a support shaft 72 is attached by way of a movable lock 73.
  • the movable lock 73 has, in its front portion 74 facing the first part 60, a recess 75 that fits the contour of retention pin 62.
  • the lock 73 itself is pressed down by spring 77, and this pressure is adjustable by tightening nut 78.
  • Figure 13-a shows the engagement uncoupled, with lock 73 in the resting position and trolley 22 approaching, as indicated by arrow 63 A.
  • Figure 13-b illustrates a subsequent operational stage, in which the contact of pin 62 against the bottom edge configured as a chamfer 76 of front portion 74 presses lock 73, which rotates in the direction indicated by the arrow 63B, raising front portion 74.
  • Figure 13-c shows trolleys 22 and 32 fully engaged, lock 73 having returned to its original position indicated by the arrow 63 C, thereby providing latching by recess 75 of retention pin 62.
  • the lateral force 64 needed to provide the decoupling of the engagement is a function of pressure exerted by spring 77 and the angle ⁇ at the point of contact between the retention pin 62 and the recess 75, as illustrated in detail in Figure 13-d.
  • Figure 14 illustrates application of the same mechanical engagement principle as illustrated in Figure 13 along with a magnetic field generator (i.e., electromagnet).
  • a magnetic field generator i.e., electromagnet
  • the field generated by the coil of the magnetic field generator 56 attracts the free end 74 of lock 73, momentarily overcoming the pressure exerted by spring 77, facilitating locking as well as unlocking of pin 62.
  • Electrical activation of the field generator can be made based on determination of the positioning of subassemblies 20 or 30 using a known process, such as, for example, photodetector means, magnetic position detector, rotation counter with electromechanical drive that directly or indirectly controls the movement of subassembly 20, and other means that are not the subject of this invention.
  • Triggering of the lock 73 in the engagement mechanism may also be effected by using a permanent magnet 58, as illustrated in the sequence of drawings in Figures 15 and 16.
  • the sequence of operating the engagement is illustrated in Figures 16-a to 16-d and the disengagement is illustrated in Figures 16-e to 16-g.
  • first engagement part 60 of the coupling, affixed to trolley 22 is approaching (in the direction of arrows 47A in Figure 15-a and 63 A in Figure 16-a) second engagement part 70, affixed to trolley 32, which remains immobile.
  • front portion 74 of lock 73 is positioned within the magnetic field of permanent magnet 58, which is sufficiently intense to overcome the force of spring 77, making front portion 74 move upward.
  • This phase of the operating sequence is also shown in simplified form in Figure 15-a, from which the spring 77 has been omitted for a clearer view.
  • the movement of front portion 74 is sufficient to allow pin 62 to be easily received, without touching it, under the chamfered underside 76 of lock 73, as shown in Figure 16- b. In this manner, pin 62 freely approaches, recess 75.
  • Figures 16-e to 16-g illustrate the disengagement sequence that begins with the two rigidly coupled trolleys 22, 32 moving together toward fixed permanent magnet 58, at speed 67A, 67B.
  • the front portion 74 of lock 73 is attracted by the magnetic field of permanent magnet 58. This attraction raises the end in the direction of arrow 63B, thereby releasing pin 62 from recess 75 and allowing disconnection between the two parts 60, 70 of the engagement, so that trolley 22 can move in the direction indicated by arrow 67 A, without dragging trolley 32.
  • trolley 32 remains stationary in the position illustrated in Figure 16-g, while trolley 22 freely moves away.

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  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Elevator Door Apparatuses (AREA)

Abstract

L'invention concerne un système d'actionnement pour une porte d'ascenseur, comprenant au moins deux sous-ensembles (20, 30) et un dispositif d'engrènement provisoire entre les sous-ensembles. Un premier sous-ensemble (20) comprenant un premier panneau (21) fixé à un premier chariot (22) se déplace entre un premier et un second arrêt (41, 44) le long d'un rail (40) qui s'étend à travers une entrée de porte (50). Un second sous-ensemble (30) qui comprend un second panneau (31) fixé à un second chariot (32) se déplace également le long du rail (40). Le dispositif d'engrènement provisoire entre les sous-ensembles (20, 30) comprend un premier élément d'engrènement (24, 60) fixé au premier chariot (22) et un second élément d'engrènement (35, 36, 70) fixé à un second chariot (32). Les éléments d'engrènement (35, 36, 70) étant conçus pour être couplés par une force d'attraction mutuelle et/ou une interaction mécanique de ces premier et second éléments d'engrènement lorsque les chariots (22, 32) sont poussés l'un contre l'autre. Les éléments d'engrènement sont conçus pour être désolidarisés par une force supérieure à la force d'attraction mutuelle et/ou à celle de l'interaction mécanique.
PCT/BR2009/000193 2009-06-30 2009-06-30 Système et procédé d'actionnement de portes d'ascenseur WO2011000064A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/BR2009/000193 WO2011000064A1 (fr) 2009-06-30 2009-06-30 Système et procédé d'actionnement de portes d'ascenseur

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/BR2009/000193 WO2011000064A1 (fr) 2009-06-30 2009-06-30 Système et procédé d'actionnement de portes d'ascenseur

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WO2011000064A1 true WO2011000064A1 (fr) 2011-01-06

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016162710A1 (fr) * 2015-04-07 2016-10-13 Otis Elevator Company Système de verrouillage pour des panneaux d'une cabine d'ascenseur et procédé de contrôle d'accès à une cage d'ascenseur depuis l'intérieur de la cabine
US10011463B2 (en) 2013-01-08 2018-07-03 Otis Elevator Company Elevator door friction belt drive including one or more markers

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5584365A (en) * 1994-09-16 1996-12-17 Otis Elevator Company Telescoping elevator door system
JP2000318958A (ja) * 1999-05-07 2000-11-21 Mitsubishi Electric Corp ホームエレベータのドア装置

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5584365A (en) * 1994-09-16 1996-12-17 Otis Elevator Company Telescoping elevator door system
JP2000318958A (ja) * 1999-05-07 2000-11-21 Mitsubishi Electric Corp ホームエレベータのドア装置

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10011463B2 (en) 2013-01-08 2018-07-03 Otis Elevator Company Elevator door friction belt drive including one or more markers
WO2016162710A1 (fr) * 2015-04-07 2016-10-13 Otis Elevator Company Système de verrouillage pour des panneaux d'une cabine d'ascenseur et procédé de contrôle d'accès à une cage d'ascenseur depuis l'intérieur de la cabine
CN107531459A (zh) * 2015-04-07 2018-01-02 奥的斯电梯公司 用于电梯轿厢的面板的锁定系统以及从所述轿厢内部控制对电梯竖井的接近的方法
US10252887B2 (en) 2015-04-07 2019-04-09 Otis Elevator Company Locking system for trap or panels of an elevator car and method of controlling access to an elevator shaft from inside the car

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