EP1110900B1 - Schachtsicherheitssystem für Aufzug - Google Patents

Schachtsicherheitssystem für Aufzug Download PDF

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Publication number
EP1110900B1
EP1110900B1 EP99204429A EP99204429A EP1110900B1 EP 1110900 B1 EP1110900 B1 EP 1110900B1 EP 99204429 A EP99204429 A EP 99204429A EP 99204429 A EP99204429 A EP 99204429A EP 1110900 B1 EP1110900 B1 EP 1110900B1
Authority
EP
European Patent Office
Prior art keywords
shaft
safety
switch
car
elevator according
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.)
Expired - Lifetime
Application number
EP99204429A
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English (en)
French (fr)
Other versions
EP1110900A1 (de
EP1110900B2 (de
Inventor
D.W.L. Offerhaus
Masami Nomura
W.J.J.M. Kempes
L.C. Van Wagensveld
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Elevator Europe BV
Original Assignee
Mitsubishi Elevator Europe BV
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.)
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Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=8241037&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1110900(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Mitsubishi Elevator Europe BV filed Critical Mitsubishi Elevator Europe BV
Priority to AT99204429T priority Critical patent/ATE299835T1/de
Priority to DE69926244T priority patent/DE69926244T3/de
Priority to EP99204429A priority patent/EP1110900B2/de
Priority to AU32442/01A priority patent/AU3244201A/en
Priority to PCT/NL2000/000936 priority patent/WO2001046058A1/en
Priority to CN00819120.4A priority patent/CN1227150C/zh
Publication of EP1110900A1 publication Critical patent/EP1110900A1/de
Publication of EP1110900B1 publication Critical patent/EP1110900B1/de
Publication of EP1110900B2 publication Critical patent/EP1110900B2/de
Application granted granted Critical
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B66B13/14—Control systems or devices
    • B66B13/16—Door or gate locking devices controlled or primarily controlled by condition of cage, e.g. movement or position
    • 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

Definitions

  • This invention relates to an elevator comprising a car inside an elevator shaft, a landing door to open and close an entrance of the elevator shaft which entrance provides access to a work environment in the elevator shaft and a shaft safety system for safeguarding a maintenance worker in the work environment from the car.
  • the invention also relates to a control system, a shaft safety device and a shaft safety system of the elevator.
  • the drive and control units are positioned in a separate room. This room has specific dimensions and no direct contact is possible with the moving car or counterweight, so that a safe work environment is guaranteed.
  • the drive unit and sometimes the control unit as well are positioned inside the shaft, in most cases in the pit or in the top of the shaft. So maintenance and inspection to these parts shall be performed from inside the shaft as well. To guarantee a safe work environment, additional measures have to be taken.
  • the buffers, rubber bumpers, spring or hydraulic buffers safeguard a specified refugee space.
  • the activated pit stopping device safeguards the person present in the pit to be hit by moving parts due to unexpected car operation. Standard procedure is to activate the pit stopping device before entering the pit and deactivating it again after leaving. The operation of the pit stopping device is by manual action, so it can be easily forgotten or even neglected. To reach the parts installed underneath the car after pit entrance, car operation from the pit may be required to lower the car for testing or maintenance performance to these parts. This will lead to unauthorized deactivation of the pit stopping device when present in the pit or climbing on top of something to reach the higher parts which results into an unsafe work environment.
  • the pit For an elevator with the drive system and/or the associated equipment positioned in the pit, the pit is regarded as machine room.
  • the relevant regulation (EN81) demands minimal dimensions for machine rooms for easy and safe working on equipment (EN81-6.3.2). In particular there shall be provided at least a clear height of 2 m at working areas. Sales on the other hand require a minimum pit depth to reduce building costs and to be competitive to other suppliers. These two demands are in conflict with each other.
  • US patent 5,727,657 shows equipment that automatically provides a safe work environment by limitation of the car travel.
  • One or more travel blocking devices pivot into the travel path of the car whenever the car is moved away from the protected area and the car is stopped. During the movement itself the travel blocking devices are retracted again. Switches check these movements.
  • a key to open the door actuates an unlatching and release device positioned above the shaft door. This will actuate a memory circuit to keep the interruption of the safety circuit and prevents car operation until a key switch resets the memory circuit.
  • a disadvantage of this system is that the parts underneath the car are still difficult to reach for maintenance performance. In this circumstance, the car can not be lowered due to the mechanical blocking device. The maintenance person is forced to use a separate ladder or has to climb on top of something else to reach the parts installed underneath the car. This introduces new risks of falling or moving parts crushing left ladders in the pit after maintenance performance. Also dynamic maintenance, that means maintenance performance to parts maintained from the pit that require car movement, cannot be performed in that case. Furthermore, this safety system incorporates a lot of moving parts that can malfunction due to dust or dirt. This system may also be costly due to the amount of parts.
  • the safeguarded free height is only just valid as the person stands on the pit floor mat. During the pit entrance, e.g., standing on the ladder, the free height is not yet safeguarded.
  • the elevator of the invention is characterized in that the shaft safety system comprises a shaft safety device which is arranged to be automatically activated when said landing door is opened or released to be opened and deactivated by manually reset and a control system for controlling the movement of the car wherein the device is connected to the control system and the control system is brought in a safely mode wherein the control system prevents the car to move beyond a predetermined position in the shaft in the direction of the work environment if said device is activated.
  • a shaft safety system is provided that is activated automatically as soon as the landing doors near the area in the shaft to safeguard, e.g., the pit or top of the shaft, are opened or are released to be opened. It provides a safe work environment in the shaft that involves a safeguarded free work height as soon as the shaft safety system is active.
  • the control system will allow car movement by inspection speed only.
  • the shaft safety system will, according to a preferred embodiment, memorize the required condition when the power recovers. An easy check is available for the person if the shaft safety system is active or not.
  • the present invention of a shaft safety system comprises according to a special embodiment the following items.
  • a car that is able to move up or down inside an elevator shaft.
  • a landing door at the landing floor to close the entrance to the part of the elevator shaft to safeguard.
  • a shaft safety device that notifies that someone enters the shaft.
  • a control system is activated that prevents car operation except from the shaft location near the landing door equipped with the safety device, it makes a temporary limit switch operative and it lightens the work light in the shaft. This temporary limit switch prevents the car to move below or above a certain height to safeguard a free work height as is valid for machine rooms.
  • an exception can be made by performing a certain conscious action from inside the pit. After leaving the shaft, the device is manually reset from the landing floor and the control system is inactive again.
  • Figure 1 shows the side view of a machine-room-less elevator.
  • the car 3 and counterweight 6 are suspended by a two to one roping system, with the deflection sheaves 2 mounted in the top of the shaft and deflection sheaves below the car, the so called underslung 4.
  • the lower part of the shaft 1 is the pit 7 where the buffers 8 are positioned.
  • the machine 9 is positioned in the pit, but it could also have been installed for example in the top of the shaft.
  • the machine location in the shaft, in this case the pit is lightened by the work light 10.
  • Landing doors 11 closes entrances to the shaft.
  • the pit is accessible from the lowest landing floor.
  • the elevator is provided with a shaft safety system.
  • This system comprises a shaft safety device 12 which is positioned partly behind and/or above the landing doors near the machine location.
  • the shaft safety system also comprises a temporary operative limit switch 5 positioned in the shaft. In case of a machine in the pit, this limit switch is positioned in the lower part of the shaft. For a machine in the top of the shaft, a temporary operative limit switch can be positioned in the top of the shaft. This limit switch is part of the shaft safety system.
  • the function of this invention is as follows regarding the example of a machine-room-less elevator with the machine in the pit.
  • the landing door has to be opened manually.
  • the shaft safety device will be activated.
  • This will activate a control system of the shaft safety system that lightens the work light in the pit, makes the temporary operative limit switch operative and prevents car operation from any location except for the pit.
  • the work light functions as a warning signal that the shaft safety system is active or not as well.
  • the temporary operative limit switch prevents car operation below a certain level of at least the minimum required safety height as is valid for machine rooms from the moment that the shaft safety system is active.
  • the car can be lowered passed the temporary operative limit switch, e.g., to perform maintenance to the lower parts of the car.
  • the shaft safety device and thereby the shaft safety system has to be reset manually from the landing floor by pulling a pawl or pressing a button inside a key-locked hall panel.
  • the effect of this invention is that as soon as a person manually opens the lowest landing door the shaft safety system is active. The person can safely enter the pit and no danger exists that the car goes down unexpectedly by car operation from another location during his presence in the pit. Also dynamic maintenance can be performed safely from the pit without the danger that the car goes down unexpectedly in case of not paying attention to the car movement but to the maintained parts or in case of inaccurate operation. However, it is still possible to lower the car to maintain the lower parts of the car.
  • FIGS 2 and 3 show an implementation of the shaft safety device including a triangle key lock 19 in the landing door panel 13.
  • This triangle key lock is also part of the conventional door lock system.
  • a lever 18 coupled to the triangle key lock lifts a mechanism when the triangle key lock is manually operated. This will rotate the door latch 14a that is hinged connected to the door hanger 14. When rotated, the door latch no longer locks behind the fixed latch 14b and the door panel, door hanger and everything connected to the door hanger can translate aside.
  • the door lock is rotated by the vanes 14c fixed to the car door that rotate the door latch when making contact with the rollers of the door latch.
  • a second lever 20 is fixed to the triangle key lock, to the opposite side as lever 18.
  • a bracket 17 is mounted behind the triangle key lock.
  • a stopper 16 consisting of a bolt nut combination is fixed to this bracket.
  • a second lever 20 is fixed to the triangle key lock to the opposite side as lever 18.
  • the free end of this lever 20 is hinged connected to a strip 21.
  • This strip is connected by bolts to a special bend strip 22 pointing in the same direction as strip 21. Slots are provided in one of these strips to adjust the total strip length.
  • the other end of strip 22 is hinged connected to a plate 24.
  • This plate is also hinged connected to a bracket 23 that is mounted to the door hanger 14.
  • the bent part of this plate 24 can make contact with a lever 25.
  • This lever is fixed to the safety switch lever 28.
  • the safety switch is mounted to and positioned inside a switch frame 29 that is fixed on top of the header case 15.
  • a switch locking lever 26 with trapped cutting is hinged connected to the switch frame and is pushed against the safety switch lever by a spring 27.
  • this shaft safety device is as follows. To manually open the doors, the triangle key lock will be rotated by means of the triangle key. The levers fixed to the triangle key lock will be rotated as well. Lever 18 will operate the door latch while lever 20 pulls down the strip 22. Rotation of the triangle key lock and thus the fixed connected levers in the opposite direction is limited by means of the stopper 16. When lever 22 is pulled down, lever 24 will be rotated counter-clockwise and lifts lever 25. This will activate the safety switch and at the same time the lock lever 26 will be rotated one step higher underneath the safety switch lever by the spring force. After lever 24 returned to the default position, the safety switch lever is kept in the active position by this lock lever. To reset the safety switch again, the lock lever has to be rotated manually or electrically against the spring force.
  • this shaft safety device is that the safety switch is activated as soon as the triangle key lock is rotated. That means that the shaft safety system is active even before the landing door is really opened.
  • the safety switch is fixed to a static part, so that no difficulties will occur with the wiring.
  • a safety door lock can be applied because it is made bi-stable by the usage of the lock lever. The installation is simple due to the reduced amount of parts and the adjustable length of the part that connects the parts on the door panel with the parts on the header case.
  • FIG 4 shows an implementation of the shaft safety device coupled to the triangle key lock 36 fixed in the door panel 30.
  • a stopper 33 consisting of a bolt-nut combination is fixed to a bracket 34 that is fixed to the door panel.
  • Two plates 35 and 37 are fixed to the triangle key lock.
  • Plate 37 is hinged connected to a strip 38.
  • Plate 38 and plate 39 are fixed connected by bolts. Slots are provided in one of the plates for these bolt connections to adjust the total length of the combined plates.
  • Plate 39 is hinged connected to a flat plate 41 that is hinged connected to bracket 40. This bracket is fixed to the door hanger 31.
  • the safety switch lever 45 is extended by a lever 42. This lever has a bent part at the free end above the plate 41.
  • Lock lever 43 is a plate with a special cutting, trapped over the area that makes contact with the safety switch lever.
  • a spring 44 keeps contact between the lock lever and the safety switch lever.
  • the safety switch is mounted inside a switch frame 46 that is fixed on top of the header case 32.
  • this shaft safety device is similar to the function of the shaft safety device as is described for figure 2.
  • Figure 5 shows a shaft safety device coupled to the triangle key lock 50 in the door panel 47.
  • a stopper 54 is fixed connected to a bracket 53 that is fixed to the door panel.
  • a lever 51 is fixed to the triangle key lock. One side has a free contact with bar 52, while the other end is hinged connected to a lever 55. The length of this lever is adjustable. This is arranged by the use of two plates that are fixed connected by bolts with slots in one of the plates.
  • Lever 55 is hinged connected to a plate 56 that is hinged connected to the door hanger 49.
  • a torsion spring 57 is applied around this connection point to keep the plate in the default position during normal door operation. A part of plate 56 is bent so that it will make contact with a sliding bar 58 when rotated.
  • This bar is guided by a plate 59 that is mounted to the door hanger.
  • a spring 60 keeps the sliding bar in default position during normal operation.
  • a construction of two plates 61, fixed together by slot-bolts connections, is mounted on top of the sliding bar. The top part of the most upper plate is bent so that it will make contact with lever 61 that is mounted to the switch lever 62 when the sliding bar is lifted.
  • the bi-stable switch itself 63 is mounted to a switch frame 64. This switch frame is mounted on top of the header case 48.
  • Figure 6 shows an implementation of a mechanical lock mechanism for a non bi-stable switch of the shaft safety device.
  • a plate with a special cutting 65 is hinged connected 66 to the switch frame.
  • a torsion spring 67 is applied to keep the plate 65 in contact with the switch lever.
  • a reset lever 68 is hinged connected to plate 65.
  • the function of the lock mechanism is to change the non bi-stable switch to a bi-stable switch.
  • the plate 65 hooks around the switch lever when this switch lever is lifted by the operation of the shaft safety device. In that case the switch lever is kept in activated position, even when the pit safety device is no longer operated.
  • the reset lever 68 has to be pulled to release the switch lever again.
  • the effect of the lock mechanism is that a non-bi-stable safety switch can be applied for the shaft safety device that is made bi-stable by means of this lock mechanism.
  • Figure 8 shows an implementation of the shaft safety device including a triangle key lock 70 in the door panel 69.
  • a compact bi-stable safety switch 76 is mounted behind the door panel.
  • a lever 71 is fixed to the triangle key lock to operate the sliding bar 72 of the door latch mechanism and the safety switch pin 74 at the same time.
  • the special wiring of the safety switch 75 is guided behind the bent sides of the door panel.
  • the safety switch is applied with a reset button 76 to reset the switch.
  • Figure 9 shows a slightly different implementation of the shaft safety device including a triangle key lock 78 fixed in the door panel 77.
  • a special shaped lever 79 is fixed to the triangle key lock.
  • This lever has a free contact with the sliding bar of the door latch mechanism 80 and the special switch operation lever 82 of a compact bi-stable safety switch 81.
  • This switch is mounted to a bracket 83.
  • This bracket is fixed to the bent side of the door panel by bolt connections for which slots are provided in both the bracket and door panel.
  • the special wiring of the switch is guided behind the bent sides of the door panel.
  • the switch is provided with a reset button 85.
  • the function of this implementation is as follows.
  • the rotation of the triangle key lock rotates the coupled lever that lifts the sliding bar of the door latch mechanism and the switch operation lever at the same time.
  • the shape of the lever is such that the switch operation lever will be lifted within the specified range. After leaving the pit the shaft safety system has to be reset by pulling out the reset button on the safety switch behind the door panel.
  • Figure 10 shows also a slightly different implementation of the shaft safety device coupled to the triangle key lock 87 fixed in the door panel 86.
  • the lever 88 fixed to the triangle key lock is extended to one side.
  • the free end has a free contact with a compact bi-stable safety switch 90.
  • This switch is mounted to a bracket 91 that is fixed to the upper bent plate of the door panel.
  • the switch is provided with a reset button 92.
  • a lever 93 is coupled to this reset button and somewhere in the center hinged connected 94 to a special shaped bracket 95.
  • This bracket is fixed to the bent side plate of the door panel and guides a sliding bar 97.
  • a spring 96 keeps the sliding bar in the default position during normal operation.
  • the end of the sliding bar to the inner side of the door panel has a free contact with the lever 93 connected to the reset button.
  • a small hole 98 is provided in the side of the door panel.
  • the function of this implementation is as follows.
  • the rotation of the triangle key lock rotates the coupled lever. This rotation lifts the sliding bar of the door latch mechanism and activates the safety switch of the shaft safety device.
  • the shaft safety system After leaving the pit the shaft safety system has to be reset by pushing a pencil within the small hole in the side of the door panel. This will translate the sliding bar against the spring force and rotates the lever coupled to the reset button around the pivot point. The reset button will be pulled. After releasing the pencil from the hole, the spring will return the sliding bar to its default position.
  • Figures 11 and 12 show an implementation of the shaft safety device including a triangle key lock 105 positioned in the top jamb 100.
  • the top jamb is the upper beam of the door frame in the shaft wall.
  • a frame 106 made of a special bent plate is mounted underneath the triangle key lock.
  • a bent plate 108 is fixed on top of the triangle key lock.
  • a spring 104 is mounted between this plate and the frame.
  • a screw 107 is fixed to the frame at the other side of the triangle key lock.
  • the inner wire of a cable 110 is mounted at the end of the plate 108, near the spring attachment.
  • the end of the outer wire near the triangle key lock is mounted to a bracket 103 that is mounted to the top jamb.
  • the other end of cable 110 is mounted to the free end of a lever 112 positioned on top of the header case.
  • the cable is positioned between the shaft wall and the header case.
  • a special bent plate 101 has one free end positioned in the rotation path of plate 108 while the other end is connected to the door latch.
  • Lever 112 is a special bent plate with a horizontal bent part there where the cable is mounted and an inclined bent part at the other end. At a certain distance from both ends, it is hinged connected to a bracket 111 that is fixed to the header case 102. Lever 112 has a free contact with the switch operation lever 113.
  • the compact bi-stable safety switch 114 is mounted to a frame 115 that is also mounted on top of the header case.
  • a reset lever 118 is mounted to the reset button 116 of the switch.
  • a spring 117 is applied between the reset lever and the header case to avoid the reset button being pulled by the mass of the reset lever.
  • the effect of this implementation is the operation of the shaft safety system for an elevator with the triangle key lock positioned in the top jamb.
  • the position of the safety switch on the header case is flexible within a certain range due to the use of a cable to connect the parts in the top jamb with the parts on the header case. Because the cable is positioned between the header case and the shaft wall, no conflicts will occur with parts positioned within the header case.
  • Figure 13 shows a similar but slightly different implementation of the shaft safety device as is described for figure 12 with the triangle key lock 135 positioned in the top jamb 120.
  • a frame made of a bent plate 134 is mounted underneath the triangle key lock.
  • a long screw 133 is fixed to this frame at one side of the triangle key lock.
  • a spring 136 is fixed to this frame at the opposite side of the triangle key lock. The other side of the spring is fixed to a bent plate 132 that is fixed on top of the triangle key lock.
  • a hook-shaped flat plate 131 has a pivot connection at the corner to the top jamb. One free end is positioned within the rotation path of the bent plate 132.
  • the inner wire of the cable 121 is fixed to the other free end.
  • the cable consists of an inner and outer wire and is positioned between the header case 129 and the shaft wall.
  • the cable is guided by a bracket 122) fixed to the header case.
  • the outer wire near the triangle key lock is fixed to header case.
  • the other end of the cable is fixed to a lever 124.
  • This lever is hinged connected at a certain distance from the free end to a bracket 128 that is fixed on top of the header case.
  • a spring 123 is mounted between the lever and header case.
  • the part of this lever at the other side of the pivot connection has free contact with the switch operation lever 126 of the compact bi-stable safety switch 125.
  • This switch is mounted to a frame on top of the header case.
  • a rod 127 is hinged connected to the opposite end of the lever then where the cable was fixed to operate the door latch. The reset is again by means of a reset lever coupled to the reset button of the safety switch.
  • the function of this implementation is similar to the function of the implementation as described for figures 11 and 12 with the following differences.
  • the cable goes straight up and is not bent.
  • the inner wire is not directly mounted to the plate fixed on top of the triangle key lock, but an additional part is used.
  • the rotation of the plate fixed on top of the triangle key lock will make contact with this vertical mounted plate. Due to that this plate will be rotated as well which pulls out the inner wire of the cable.
  • the spring applied between the lever on top of the header case and the header case is applied to ensure that the lever will return to its default position after release of the triangle key lock. No parts of the shaft safety device or even the door latch operation device are positioned within the header case.
  • Figure 14 shows an implementation of a shaft safety device that is operated based on the combination of the landing door opening and the car being present yes or no at the same landing floor.
  • a second set of rollers 138 with attached plate 139 are pivot connected to the door hanger 140.
  • a stiff spring is applied to keep the plate in the upward, default position.
  • the conventional door latch will be operated by the conventional vanes 137a on the car door, while an additional set of vanes 138a on the car door will operate the additional set of rollers.
  • a safety switch 147 with extended switch operation lever 141 is fixed to the switch frame 146 that is mounted on top of the header case 150.
  • a special cut plate 144 is hinged connected to the frame at point 145 and is coupled by a spring 143 to the frame side.
  • a wire 148 is fixed to the free end of this plate that is positioned outside the switch frame. This wire is guided over the deflection sheaves 142 and 149 and tensioned by a small mass 151.
  • a pull ring 152 is mounted at the end of the wire that is accessible from the landing floor with the landing door opened over a small area.
  • the lock mechanism by means of the special cut plate kept in contact with the switch operation lever by means of a spring, will ensure that the switch stays activated even when the doors close again. After leaving the pit the shaft safety system can be reset by pulling the reset wire. This will rotate the connected special cut plate against the spring force and the switch operation lever is released.
  • Figure 15 shows a similar implementation as describes in figure 14 with the difference that instead of the described lock mechanism for the non-bi-stable safety switch, the lock mechanism as described in figure 6 is applied.
  • Figure 16 shows the lock mechanism for a non-bi-stable safety switch as applied in figures 2, 3 and 4 with the extension of an electrical operated plunger.
  • the function of this implementation is that the plunger is translated by the manual operation of a switch or button from another location on the landing floor. The plunger pushes the lock lever down against the spring force and the switch operation lever will be released.
  • the effect is that the doors do not have to be opened to reset the shaft safety system and the position of the reset button or switch is more flexible.
  • FIG 17 shows the schematic implementation of the shaft safety system.
  • the safety switch 168 of the shaft safety device 165 is activated by the operation 167 of manual opening of the doors 166.
  • the safety switch is reset 169 by the activation of the reset button or pawl 170 from the landing floor.
  • the state of the safety switch is transferred 171 to the control system 173.
  • the control system is part of the total elevator control 172.
  • the control system cuts 176 the safety chain, switches on 174 the work light 175, gives a signal 177 to the elevator control and activates 180 the temporary limit switch 184.
  • the cut off of the safety chain also gives a signal 178 to the elevator control to stop the machine.
  • the elevator control controls 181 the elevator car 182 movement and the car operation abilities 190, 191 and 192 via the shaft operation device 187, the car roof operation device 188 and the hall operation device 189. As soon as that the elevator control receives the signal that the shaft safety system is activated, the car operation abilities 190 and 191 via the car roof and hall operation devices are switched off. Only car operation 192 via the shaft operation device is still functioning, but with inspection speed only.
  • the elevator car If the elevator car reaches the level equal to the minimum height as required for machine rooms it operates 183 the temporary limit switch.
  • the temporary limit switch gives a signal 180 to the control system as soon that it is activated.
  • the control system transfers 177 this signal to the elevator control which will stop 181 the car.
  • the elevator car can be lowered passed the temporary limit switch in case the shaft operation device and the cancelling of the temporary limit switch 186 are both activated 185. This command is transferred via the control system to the elevator control.
  • control system only resets the safety switch if the landing doors are in closed position.
  • control system When the control system receives the signal that the shaft safety device is reset, it fixes the safety chain, the work light is switched off, the temporary limit switch is deactivated and the elevator control receives a signal to recover normal operation.

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  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Maintenance And Inspection Apparatuses For Elevators (AREA)
  • Elevator Door Apparatuses (AREA)
  • Elevator Control (AREA)
  • Forklifts And Lifting Vehicles (AREA)
  • Types And Forms Of Lifts (AREA)

Claims (25)

  1. Aufzug mit einer Kabine (3) in einem Aufzugschacht (1), einer Fahrschachttür zum Öffnen und Schließen eines Eingangs des Aufzugschachts (1), wobei der Eingang Zugang zu einer Arbeitsumgebung im Aufzugschacht (1) bietet, und einem Schachtsicherheitssystem, das einen Wartungsarbeiter in der Arbeitsumgebung vor der Kabine (3) schützt, dadurch gekennzeichnet, daß das Schachtsicherheitssystem eine Schachtsicherheitsvorrichtung (12), die automatisch aktiviert wird, wenn die Fahrschachttür (11) geöffnet oder zum Öffnen freigegeben wird, und durch manuelles Rücksetzen (170) deaktiviert wird, und ein Steuersystem (173) aufweist, das die Bewegung der Kabine (3) steuert, wobei die Vorrichtung mit dem Steuersystem (173) verbunden ist, und das Steuersystem in einen Sicherheitsmodus verbracht wird, in dem das Steuersystem (173) die Kabine (3) daran hindert, sich bei aktivierter Vorrichtung (12) über eine vorbestimmte Position innerhalb des Schachts (1) hinaus in Richtung der Arbeitsumgebung zu bewegen.
  2. Aufzug nach Anspruch 1, dadurch gekennzeichnet, daß das Steuersystem (173) im Sicherheitsmodus ferner das Steuern der Kabine (3) von jeglicher Stelle, außer von der Arbeitsumgebung im Schacht (1) aus, verhindert.
  3. Aufzug nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß das Schachtsicherheitssystem ferner mit einem in dem Aufzugschacht (1) angeordneten temporären Endschalter (184) versehen ist, der mit dem Steuersystem (173) verbunden ist, wobei der temporäre Endschalter (184) durch die Kabine (3) betätigbar ist, wenn die Kabine (3) sich über die vorbestimmte Position hinaus bewegt, und wobei das Sicherheitssteuersystem (173) im Sicherheitsmodus die Bewegung der Kabine (3) anhält, wenn der temporäre Endschalter von der Kabine (3) betätigt wird.
  4. Aufzug nach Anspruch 1, 2 oder 3, dadurch gekennzeichnet, daß das Schachtsicherheitssystem ferner ein Schachtlicht (175) aufweist, das zum Beleuchten der Arbeitsumgebung aktiviert wird, wenn das Steuersystem (173) bei Aktivierung der Vorrichtung (12) in den Sicherheitsmodus wechselt.
  5. Aufzug nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Schachtsicherheitsvorrichtung (12) einen Sicherheitsschalter (168) aufweist, der aus einer ersten Position in eine zweite Position betätigbar ist, wenn die Fahrschachttür (11) geöffnet oder zum Öffnen freigegeben ist, wobei der Sicherheitsschalter (168) mit dem Steuersystem (173) verbunden ist, und wobei das Steuersystem (173) In den Sicherheitsmodus wechselt, wenn der Sicherheitsschalter (168) in seine zweite Position gebracht ist.
  6. Aufzug nach Anspruch 5, dadurch gekennzeichnet, daß der Sicherheitsschalter (168) mechanisch aus der ersten Position in die zweite Position betätigt wird.
  7. Aufzug nach Anspruch 5 oder 6, dadurch gekennzeichnet, daß die Schachtsicherheitsvorrichtung (12) ferner ein Schlüsselschloß (19) aufweist, das von außerhalb des Schachts nahe der Fahrschachttür (11) betätigbar ist, wobei das schlüsselschloß (19) die zu öffnenden Fahrschachttüren (11) freigibt und den Sicherheitsschalter (168) von der ersten Position in die zweite Position steuert, wenn das Schlüsselschloß (19) mit einem zum Schlüsselschloß (19) passenden Schlüssel betätigt wird.
  8. Aufzug nach Anspruch 5 oder 6, dadurch gekennzeichnet, daß der Aufzug ferner ein Schlüsselschloß (19) aufweist, das von außerhalb des Schachts (1) nahe der Fahrschachttür (11) betätigbar ist, wobei das Schlüsselschloß (19) die zu öffnenden Fahrschachttüren (11) freigibt, wenn das Schlüsselschloß (19) mit einem zu dem Schlüsselschloß (19) passenden Schlüssel betätigt wird, und wobei die Fahrschachttür (11) den Sicherheitsschalter (168) aus der ersten in die zweite Position steuert, wenn die Fahrschachttüren geöffnet werden.
  9. Aufzug nach Anspruch 7, dadurch gekennzeichnet, daß das Schlüsselschloß (19) den Sicherheitsschalter (168) mechanisch steuert,
  10. Aufzug nach Anspruch 9, dadurch gekennzeichnet, daß mechanische Einrichtungen vorgesehen sind, um eine Drehbewegung des Schlüsselschlosses (19) in eine Translationsbewegung zur Steuerung des Sicherheitsschalters (168) umzuwandeln.
  11. Aufzug nach einem der vorhergehenden Ansprüche 5-10, dadurch gekennzeichnet, daß der Sicherheitsschalter (168) ein bistabiler Schalter ist.
  12. Aufzug nach einem der vorhergehenden Ansprüche 5-10, dadurch gekennzeichnet, daß eine mechanische Verriegelungsvorrichtung vorgesehen ist, um den Sicherheitsschalter bistabil (63) zu machen.
  13. Aufzug nach einem der vorhergehenden Ansprüche 5-12, dadurch gekennzeichnet, daß der Sicherheitsschalter (168) von der Arbeitsumgebung aus manuell aus der zweiten Position in die erste Position rückstellbar ist.
  14. Aufzug nach einem der vorhergehenden Ansprüche 5 - 12, dadurch gekennzeichnet, daß der Sicherheitsschalter (168) von außerhalb des Schachts manuell aus der zweiten Position in die erste Position rückstellbar ist.
  15. Aufzug nach Anspruch 13, dadurch gekennzeichnet, daß das Rückstellen des Sicherheitsschalters durch eine Klinke erfolgt, die mechanisch mit dem Sicherheitsschalter verbunden ist und den Sicherheitsschalter rückstellt, wenn sie gedrückt oder gezogen wird.
  16. Aufzug nach Anspruch 13, dadurch gekennzeichnet, daß das Rückstellen des Sicherheitsschalters (168) durch einen elektrisch betriebenen Stößel und einen Rückstellknopf erfolgt, wobei der Stößel den Sicherheitsschalter rückstellt, wenn der Rückstellknopf betätigt wird.
  17. Aufzug nach Anspruch 14, dadurch gekennzeichnet, daß das Rückstellen des Sicherheitsschalters (168) durch einen elektrisch betriebenen Stößel und einen Rückstellknopf erfolgt, wobei der Stößel den Sicherheitsschalter rückstellt, wenn der Rückstellknopf betätigt wird.
  18. Aufzug nach Anspruch 17, dadurch gekennzeichnet, daß der Rückstellknopf hinter einer mit einem Schlüsselschloß versehenen Flurpaneele oder einem anderen mit einem Schlüsselschloß versehenen Schrank angeordnet ist, der von einem Flur außerhalb des Schachts (1) zugänglich ist.
  19. Aufzug nach einem der vorhergehenden Ansprüche 13 - 18, dadurch gekennzeichnet, daß das Rückstellen des Sicherheitsschalters (168) nur erfolgen kann, wenn sich die Fahrschachttüren (11) in Schließstellung befinden.
  20. Aufzug nach einem der vorhergehenden Ansprüche 5 - 19, dadurch gekennzeichnet, daß Einrichtungen vorgesehen sind, so daß der Sicherheitsschalter (168) nur von der ersten Position in die zweite Position bewegt werden kann, wenn sich die Kabine (3) nicht hinter der Fahrschachttür (11) befindet.
  21. Aufzug nach einem der vorhergehenden Ansprüche 5 - 19, dadurch gekennzeichnet, daß ein erster Rückstellknopf in dem Schacht (1) und ein zweiter Rückstellknopf außerhalb des Schachts vorgesehen ist, wobei der Sicherheitsschalter (168) nur von der zweiten Position in die erste Position rückgestellt wird, wenn der zweite Rückstellknopf nach der Betätigung des ersten Rückstellknopfs betätigt wird.
  22. Aufzug nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das Verhindern der Bewegung der Kabine (3) im Schacht über die vorbestimmte Position hinaus in Richtung der Arbeitsumgebung mittels einer vorbestimmten Aktion, die von einer Person in der Arbeitsumgebung ausgeführt wird, außer Kraft gesetzt werden kann.
  23. Steuersystem für einen Aufzug nach einem der vorhergehenden Ansprüche 1 - 4.
  24. Schachtsicherheitssystem für einen Aufzug nach einem der vorhergehenden Ansprüche 1 - 22.
  25. Schachtsicherheitsvorrichtung für einen Aufzug nach einem der vorhergehenden Ansprüche 1 - 22.
EP99204429A 1999-12-20 1999-12-20 Schachtsicherheitssystem für Aufzug Expired - Lifetime EP1110900B2 (de)

Priority Applications (6)

Application Number Priority Date Filing Date Title
AT99204429T ATE299835T1 (de) 1999-12-20 1999-12-20 Schachtsicherheitssystem für aufzug
DE69926244T DE69926244T3 (de) 1999-12-20 1999-12-20 Schachtsicherheitssystem für Aufzug
EP99204429A EP1110900B2 (de) 1999-12-20 1999-12-20 Schachtsicherheitssystem für Aufzug
PCT/NL2000/000936 WO2001046058A1 (en) 1999-12-20 2000-12-20 Shaft safety system for an elevator
AU32442/01A AU3244201A (en) 1999-12-20 2000-12-20 Shaft safety system for an elevator
CN00819120.4A CN1227150C (zh) 1999-12-20 2000-12-20 用于升降机的竖井安全系统

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP99204429A EP1110900B2 (de) 1999-12-20 1999-12-20 Schachtsicherheitssystem für Aufzug

Publications (3)

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EP1110900A1 EP1110900A1 (de) 2001-06-27
EP1110900B1 true EP1110900B1 (de) 2005-07-20
EP1110900B2 EP1110900B2 (de) 2011-07-27

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EP (1) EP1110900B2 (de)
CN (1) CN1227150C (de)
AT (1) ATE299835T1 (de)
AU (1) AU3244201A (de)
DE (1) DE69926244T3 (de)
WO (1) WO2001046058A1 (de)

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WO2013092493A1 (de) 2011-12-21 2013-06-27 Inventio Ag Einrichtung und verfahren zum entriegeln einer aufzugs-stockwerktür
DE102012005541A1 (de) * 2012-03-21 2013-09-26 Aufzugswerke M. Schmitt & Sohn Gmbh & Co. Schachtsicherheitsvorrichtung sowie Aufzugsanlage
EP2722300A1 (de) 2007-01-03 2014-04-23 Kone Corporation Sicherheitsanordnung für einen Aufzug
US10889465B2 (en) 2017-07-31 2021-01-12 Otis Elevator Company Mechanical hoistway access control device
EP3056460B1 (de) * 2015-02-13 2023-04-05 Kone Corporation Verfahren zum Zurücksetzen einer Aufzugssteuerung vom Inspektionsmodus in den Normalmodus

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US6603398B2 (en) 2001-11-16 2003-08-05 Otis Elevator Company Hoistway access detection system
CN100522787C (zh) * 2004-03-23 2009-08-05 三菱电机株式会社 电梯层门的解锁装置及其改造方法
WO2006062503A1 (en) * 2004-12-03 2006-06-15 Otis Elevator Company Safety device for use in an elevator system
ES2353054T3 (es) 2006-06-30 2011-02-25 Otis Elevator Company Ascensor con un foso de poca profundidad y/o con poco espacio libre superior.
US8136637B2 (en) 2006-06-30 2012-03-20 Otis Elevator Company Safety device for securing minimum spaces at the top or bottom of an elevator shaft being inspected, and elevator having such safety devices
EP2039642A1 (de) * 2007-09-19 2009-03-25 Mac Puar, S.A. Auslösevorrichtung für die Endpositionen eines Aufzugs und Betriebsverfahren dieser Auslösevorrichtung
DE102007049737A1 (de) * 2007-10-16 2009-04-23 Exclusive Lift Gmbh Aufzuganlage für Personen und/oder Lasten mit zumindest einer Aufzugkabine
FR2977881B1 (fr) * 2011-07-13 2015-08-21 Arnoult Patrice Dispositif de blocage de cabine d'ascenseur dans une gaine a une distance determinee du plafond ou du sol de la gaine
FI125118B (fi) 2013-01-07 2015-06-15 Kone Corp Hissi
CN103991762B (zh) * 2014-05-23 2016-01-20 苏州莱茵电梯制造有限公司 斜行电梯井道用的应急保护装置
US11040853B2 (en) 2015-05-07 2021-06-22 Otis Elevator Company Elevator system hoistway access control
AU2016320400B2 (en) 2015-09-11 2019-08-29 Inventio Ag Device and method for monitoring a maintenance mode of an elevator installation
KR102166938B1 (ko) * 2016-04-26 2020-10-16 미쓰비시덴키 가부시키가이샤 엘리베이터의 점검 운전 장치
CN107473061B (zh) 2016-06-08 2020-10-16 奥的斯电梯公司 升降电梯系统的维护安全装置及其操作方法
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CN101084157B (zh) * 2004-12-21 2010-04-14 奥蒂斯电梯公司 电梯安全系统及其防止人员受伤的方法
EP2722300A1 (de) 2007-01-03 2014-04-23 Kone Corporation Sicherheitsanordnung für einen Aufzug
WO2013092493A1 (de) 2011-12-21 2013-06-27 Inventio Ag Einrichtung und verfahren zum entriegeln einer aufzugs-stockwerktür
DE102012005541A1 (de) * 2012-03-21 2013-09-26 Aufzugswerke M. Schmitt & Sohn Gmbh & Co. Schachtsicherheitsvorrichtung sowie Aufzugsanlage
EP3056460B1 (de) * 2015-02-13 2023-04-05 Kone Corporation Verfahren zum Zurücksetzen einer Aufzugssteuerung vom Inspektionsmodus in den Normalmodus
US10889465B2 (en) 2017-07-31 2021-01-12 Otis Elevator Company Mechanical hoistway access control device

Also Published As

Publication number Publication date
EP1110900A1 (de) 2001-06-27
DE69926244T3 (de) 2012-01-05
CN1227150C (zh) 2005-11-16
WO2001046058A1 (en) 2001-06-28
AU3244201A (en) 2001-07-03
DE69926244D1 (de) 2005-08-25
WO2001046058A9 (en) 2002-09-06
CN1434784A (zh) 2003-08-06
DE69926244T2 (de) 2006-05-24
EP1110900B2 (de) 2011-07-27
ATE299835T1 (de) 2005-08-15

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