EP2604566B1 - Sicherungsvorrichtung sowie Aufzugvorrichtung - Google Patents

Sicherungsvorrichtung sowie Aufzugvorrichtung Download PDF

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Publication number
EP2604566B1
EP2604566B1 EP20110009794 EP11009794A EP2604566B1 EP 2604566 B1 EP2604566 B1 EP 2604566B1 EP 20110009794 EP20110009794 EP 20110009794 EP 11009794 A EP11009794 A EP 11009794A EP 2604566 B1 EP2604566 B1 EP 2604566B1
Authority
EP
European Patent Office
Prior art keywords
sensors
safety device
sensor
safety
contact
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.)
Active
Application number
EP20110009794
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German (de)
English (en)
French (fr)
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EP2604566A1 (de
Inventor
Beat De Col
Dr. Tobias Leutenegger
Dumeng Hersche
Jürg Hegelbach
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.)
Cedes AG
Original Assignee
Cedes AG
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 Cedes AG filed Critical Cedes AG
Priority to EP20110009794 priority Critical patent/EP2604566B1/de
Priority to US13/677,678 priority patent/US8820482B2/en
Priority to BR102012031603A priority patent/BR102012031603A2/pt
Priority to BR102012031717A priority patent/BR102012031717A2/pt
Priority to CN201210536263.5A priority patent/CN103159103B/zh
Priority to BR102012031711A priority patent/BR102012031711A2/pt
Publication of EP2604566A1 publication Critical patent/EP2604566A1/de
Application granted granted Critical
Publication of EP2604566B1 publication Critical patent/EP2604566B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
    • B66B5/0006—Monitoring devices or performance analysers
    • B66B5/0018—Devices monitoring the operating condition of the elevator system
    • B66B5/0031—Devices monitoring the operating condition of the elevator system for safety reasons
    • 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
    • B66B13/22—Operation of door or gate contacts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
    • B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions

Definitions

  • the invention relates to a safety device for elevator devices according to the preamble of claim 1 and to an elevator device according to the preamble of claim 13.
  • An electronic security system for a lift is known.
  • This system includes a safety circuit that can ultimately be used to turn on or off the engine to drive the cab.
  • the safety circuit in turn comprises a switch which can be switched by connection to a safety device.
  • the safety device in turn is coupled to door contacts.
  • the object of the invention is to provide a security device as well to propose an elevator device in which the maintenance susceptibility improved and the maintenance can also be simplified.
  • measured values in the form of digital or analog data can be transmitted, identification codes of the sensors or of the controller, commands or the like.
  • the transmission can also take the form of special protocols.
  • the sensors could also be designed to detect another state, for example a maximum limit value for the engine temperature.
  • the switching unit is adapted to the closed and / or opened conduction state of the first Security circle.
  • the interruption device serves to interrupt the drive, the interruption being dependent on how the switching states of the switching unit and, moreover, other switches in the first safety circuit are, that is to say, whether all the doors are actually locked.
  • the switching unit can transmit data and / or control signals to it directly by connection to the control unit. This makes it possible that these data are directly available to the control unit and can be displayed, for example.
  • the control unit such as the lift control or read where the safety circuit is blocked, where an elevator door does not close or can not be locked, where in the safety circuit / safety device an error has occurred or whether all sensors work correctly.
  • Decisive here is the interaction of the sensors, which now unlike electromechanical switches cause no interruption of a circuit, with the measure that signals can be transmitted to the control unit or to the lift control, which can thus be used directly.
  • the safety device thus remains an autonomous working unit, yet the control unit / lift control can be constantly supplied with information about which operating state is currently present or whether a fault or blockage has occurred.
  • control unit / lift control which controls the drive of the car via the engine control, additionally set the engine control, for example in the event of an interruption such that the car can start again gently after the interruption, for example, is switched to an emergency program or the like.
  • a lift control unit receives commands from the users, eg by pressing a button when the car is called by a user waiting in front of the lift or a floor to be approached is selected.
  • the lift control / control unit can also control the motor control of the drive motor during regular operation (smooth start, deceleration, stand-by operation, etc.).
  • the ride can only be started or continued when all doors are locked. Accordingly, it is expedient if the corresponding sensors, which are each assigned to a door, are connected in series.
  • the first safety circuit has, for example, opening switch and a relay / contactor as interruption device.
  • the opening switch may be formed in conventional safety circuits as electromechanical switch. If an open line state is effected, ie the first safety circuit is interrupted, the relay or the contactor also opens and interrupts, for example, a motor of the elevator.
  • the safety device can effectively be regarded as an equivalent circuit for individual opening switches or for all opening switches which monitor the closed state or locking state of the door.
  • the safety device can also be a second safety circuit.
  • the transmission device is designed as a controller which has a connection to the safety device, wherein the transmission device is designed to switch the switching unit.
  • the controller thus takes over the transmission of the data / control signals to the control unit and, in the event of an interruption, switches even the switching unit so that it causes a break in the first safety circuit. This means, that the drive is switched off.
  • the transmission device can also be designed to receive data and / or control signals of the control unit, thereby advantageously enabling data exchange. It is conceivable, for example, for the control unit to request the current operating status via a command and then to receive the response data on the operating status from the controller or for the control unit to carry out a check of the controller on a regular basis. Also this measure can simplify the maintenance and improve the maintenance susceptibility.
  • control unit receives a signal via another I / O interface (eg the emergency stop switch in the cabin), so that it sends a command to interrupt the safety circuit to the safety unit's switching unit for safety reasons, even though the sensors are in regular operation (eg locked doors).
  • another I / O interface eg the emergency stop switch in the cabin
  • This device effectively allows the safety circuit or array of sensors to be "decoupled” as a separate device. This can be advantageous in particular if a device with comparatively high voltages is required for the interruption device. Such a device offers corresponding disadvantages during assembly or maintenance, since possibly live parts could be touched with relatively high voltage; in the safety device according to the invention, these disadvantages can be avoided.
  • the safety circuit itself can, however, basically be operated with relatively low voltages.
  • the safety device can be designed as a second safety circuit, which comprises at least two sensors which, as a function of a closed state, which is to be detected by the sensors, between at least two switching states are switchable.
  • the closing state or locking state of the elevator door can be determined by the sensors.
  • the interruption device may be designed, inter alia, depending on the switching state of a switching unit (not the sensor directly) to interrupt the drive and / or continue.
  • the switching unit in turn can be switched by connection to the safety circuit between at least two switching states.
  • the interruption device and the switching of the interruption device are indeed dependent on the safety circuit, but not directly coupled to this, but indirectly via an intermediate switching unit.
  • the sensors can in turn be connected in series.
  • a fault condition of a sensor In a normal series circuit, however, only the interruption of the circuit per se can be regularly perceived, but not which sensor is currently interrupted by a defect. For a large number of sensors, the inspection during maintenance therefore requires a corresponding time and thus a corresponding cost.
  • This can be countered by providing a display device for displaying the switching state of the individual sensors with assignment of the individual switching states to the corresponding sensors.
  • a corresponding display device is able to indicate which sensor has which switching state or which sensor does not have a specific switching state, for example which sensor is open.
  • the safety device can also be designed as a bus system, the sensors each having an electronic unit.
  • the sensor is connected to the bus via its corresponding electronics unit.
  • a bus enables the transmission and / or exchange of data. For example can be read out on command data individual sensor.
  • a bidirectional bus in which data can be sent and received. Basically, however, a unidirectional bus is conceivable.
  • the data may represent switching states, but it may also be transmitted identification data of the sensors, which provide information about which sensor is currently. This identification data can also be, for example, addressing the individual sensors. This makes it possible in a particularly elegant way to read out which sensor currently indicates a particular state.
  • bus systems can also work very fast, which can also contribute to increased security.
  • At least one of the sensors is constructed as follows: A sensor for securing devices for elevator devices, which can move a cabin via a drive, wherein the sensor is designed as an optical sensor comprising a transmitter for transmitting an optical signal and a Receiver for receiving the optical signal comprises. It is particularly advantageous on the sensor that it can work without contact, which means wear-free. In addition, the sensor thus has no or less live contact surfaces and is also safe to install. The sensor according to the invention can therefore replace a commercially available switch, a so-called interlock switch, from the prior art. In addition, the sensor allows that in contrast to an electromechanical switch no interruption of the circuit must be made.
  • the sensor can also prevent a defect, e.g. occur in electromechanical sensors and contacts by contact firing due to sparkover when opening or closing the electrical contacts and can eventually lead to loss of function.
  • an inductively or capacitively operating sensor is also conceivable.
  • a voltage is induced via a coil or an inductance, which basically depends on the time change of a magnetic field (duration of the changes, strength of the changes or distance from the generator of the magnetic field, etc.) and which can be measured.
  • a capacitive sensor a sample capacity is measured, the capacity u. a. depends on the distance of the capacitor plates or dielectric between the capacitor plates, that is about a material that is placed between the capacitor plates.
  • a capacitive and inductive sensor like an optical sensor, also enables the advantages associated with the fact that in principle no interruption of the circuit must take place.
  • a contact bridge and a contactor for receiving the contact bridge are provided, which are arranged so that the closed state of the elevator door by connection of contact and contact bridge can be determined.
  • the detection state of the sensor therefore depends on the approach of the contact bridge to the contact person.
  • An elevator itself generally has on the one hand a cabin, which can be moved between individual floors or floors.
  • the individual floors each have shaft openings, in the area of the cabin can be moved to a holding position, if they should approach the corresponding floor. In this holding position access to the cabin is then possible.
  • Elevator doors can be landing doors or cabin doors.
  • the shaft doors are mounted or moved in the shaft opening in the shaft itself.
  • the Cabin doors in turn are attached to the cabin and stored mobile. Regularly a landing door is assigned to a car door, wherein both are arranged overlapping (at least partially overlapping) in the holding position.
  • Such elevator or car doors can be monitored, for example, by means of the safety device according to the invention or an embodiment of the invention, in particular by sensors with contact bridge and contact person.
  • the safety device checks the lock and optionally interrupts the drive by means of a breaker device.
  • the interruption device or the interrupting circuit can address the control unit for this, so that it stops the drive via the motor control; It is also conceivable that the interruption device directly interrupts the power supply of the drive / motor.
  • the corresponding sensor is thus designed to check whether the corresponding door of a lift or a shaft is open or closed and locked.
  • this measure allows a mechanically very stable device.
  • the sensor can be designed so that the contact bridge is received with clearance or positive fit in the shaft of the contact.
  • the contact bridge is designed such that it comprises at least one transmission element for transmitting an optical signal.
  • a so-called fail-safe circuit ie a fail-safe circuit can be achieved.
  • the transmission element can namely be designed in such a way that the transmission of the optical signal takes place in a special way, which can only be manipulated with great difficulty and which is not accidentally readily realized. If it were, for example, a mere photoelectric barrier, which would be interrupted when closing the door, this would mean that the drive would be released even if z. B. a corresponding object, a fly or the like interrupts the light barrier.
  • the transmission element is a reflection surface, which then reflects the optical signal or the light and only then conducts to the corresponding receiver.
  • the reflection surface may, for example, be arranged in a notch in the contact bridge.
  • the transmission element is an optical medium. It is conceivable, for example, that the refraction of light is used in the transition from the air into this optical medium and the light beam is thus directed in a certain direction, so that only then is passed either on the receiver or just not on the receiver.
  • an optical medium may further be provided a light guide.
  • the optical signal is transmitted when its light is coupled into the optical fiber, propagated through the optical fiber and passed through the optical fiber in the receiver.
  • the transmitter as a light emitting diode and / or form the receiver as a photodiode.
  • These are particularly inexpensive standard electronic components; In particular, this can save costs.
  • the contact person comprises transmission elements for transmitting the optical signal, e.g. Reflective surfaces or optical media such as e.g. Light guide. It is conceivable that a portion of the propagation path of the optical signal from the transmitter to the receiver via a reflection surface or by an optical fiber in the contact takes place. It is also conceivable that by receiving the contact bridge of the optical fiber in the contact or in the contact bridge is shifted so that a transmission of the light is made possible.
  • the senor may comprise an electronic unit for evaluating the receiver, which is designed to interpret the evaluation of the receiver in one of the switching states and / or in an electrical signal.
  • the electronic unit is designed to generate an electrical signal or to make an electrical contact.
  • the mechanical closing state is detected purely by optical means, this means that it is not absolutely necessary again to produce a mechanical contact or a mechanical opening state in order to obtain an electrical signal.
  • the optical signal, the receiver such as a photodiode, turns on and thus a line state (in contrast to an interruption) can be achieved.
  • the electronics unit can also be designed in addition to allow a connection to other electronics.
  • a separating strip for the optical separation of transmitter and receiver can additionally be provided. This once more fundamentally reduces the possibility of errors occurring due to incorrect interpretation of the signals.
  • a diffuser can also be provided which spreads diffused light diffusely. It is also conceivable that the receiver is set to a certain threshold with respect to the intensity of the incident light in the detection, so that at a certain amount of stray light, which may fall into the receiver, not yet a corresponding sequence signal is triggered, which only then resolved should be when light falls in the receiver via the transmission element.
  • a connection can be made, in which the contactor comprises a shaft and the contact bridge comprises a tongue-shaped tab, which engages in connection of contact bridge and contact in the slot. It is also particularly advantageous that a corresponding coding can be made, that is, that the contact bridge, similar to a key, must be specially designed so that it can penetrate into the contact person. This can in particular increase the safety of this device, in particular if the contact-receiving shaft is designed so that no hand can penetrate.
  • a corresponding sensor at least two transmission elements which are arranged one behind the other in the direction of movement of the contact bridge, which means that when locking the door, the contact bridge correspondingly dips into the contact and initially for the optical signal or the optical light beam of the Transmission elements (namely, the first in the direction of movement) is visible.
  • the contact bridge When moving on then the next transmission element visible, while the previous is pushed out of the optical path. It can thus offset in time several optical signals occur.
  • the first safety circuit can continue to have electromechanical opening switches. If necessary, these should remain, for example, in an existing elevator system and not be replaced, for example, when retrofitting by optical sensors.
  • Optical sensors may be provided in particular for checking the proper locking of elevator doors. If the elevator is to be stopped in its movement but also when the lock has been correctly fulfilled, but there is another fault, may be used to check such incidents may continue to be electromechanical opening switch.
  • the sensors and / or opening switches can be connected in series so that the drive is stopped in the event of an interruption.
  • the circuit thus corresponds to an AND circuit, i. the motor only runs if all sensors or opening switches switch through and do not interrupt the line.
  • a corresponding display device may be provided which, for example, makes it possible to identify which sensor is currently in a certain switching state and is possibly defective.
  • the display device may also be connected to the bus in one embodiment of the invention.
  • the senor may comprise an electronic unit for evaluating the receiver, which is designed to interpret the evaluation of the receiver in one of the switching states and / or in an electrical signal.
  • the electronic unit is designed to generate an electrical signal or to make an electrical contact.
  • the mechanical closing state is detected purely by optical means, this means that it is not absolutely necessary again to produce a mechanical contact or a mechanical opening state in order to obtain an electrical signal.
  • the optical signal, the receiver such as a photodiode, turns on and thus a line state (in contrast to an interruption) can be achieved.
  • a line state in contrast to an interruption
  • the electronics unit can also be designed in addition to enable a connection to a further electronics.
  • it may also be designed to enable a connection to a bus.
  • the lower maintenance susceptibility can be improved since mechanical contacts and sensor are essentially avoided. It is also particularly advantageous that only the penetration of the contact bridge into the contact receiver is necessary as a mechanical contact closure.
  • the electronic unit is for communication with a switching unit, in particular for the transmission of switching states and / or identification signals.
  • the switching unit is a component with which a line can be opened or closed by a switching operation, similar to a relay or Contactor.
  • the switching process is triggered when the sensors transmit a corresponding signal or corresponding information to the switching unit. It is particularly advantageous that the line between the switching unit and the sensor no longer has to be interrupted, as is the case for example regularly with a contactor / relay.
  • the electronics unit can be arranged in particular in or on the contact, in which transmitter and receiver are arranged.
  • the contactor may be in the elevator device e.g. be arranged statically, while the contact bridge is disposed on a movable part and only the "key" is to allow the signal transmission in the contactor.
  • a sensor can have exactly two connections, which serve for the one hand the power supply and on the other hand the communication with the electronic unit. For communication thus serves the same line, which is also used for power. This measure allows a particularly compact and inexpensive construction.
  • no additional lines or connections must be laid.
  • the communication can take place via a modulation of its own resistance of the sensor.
  • the voltage and / or the current intensity can be modulated in the circuit with the switching unit. This modulation then carries the information that is to be transmitted in the communication.
  • a circuit is conceivable, for example, which includes sensors connected in series and (likewise connected in series) a switching unit. If the resistance of a sensor is changed with sensors connected in series, the current intensity changes. For example, if a constant current source is used for the circuit, a change in resistance causes the voltage to be increased to account for the resulting decrease in amperage, which is initially caused by the lower resistance to compensate.
  • the modulation can therefore be the carrier of the information.
  • the changes in current or voltage are measurable and can be interpreted as information.
  • the switching unit in turn is designed in a development of the invention to carry out the communication with the sensors by modulation of the current or the voltage. This measure can be done by changing resistors or corresponding changes or adjustments of voltage or current.
  • the sensor has a low volume resistance.
  • the resistance of a sensor can be, for example, in the range from 1 ohm to 100 ohms, in particular in the range of 5 ohms to 20 ohms, preferably less than 10 ohms.
  • an elevator device according to the invention with a car and at least one elevator door for opening and / or closing the car as well as with a safety device is further characterized in that a safety device according to the invention is provided.
  • contact bridge it is conceivable, in particular, for the contact bridge to be mounted on an elevator door and the contact person for the cabin itself. Basically, however, a reverse construction is conceivable, namely: the contact person on the elevator door and the contact bridge to the cabin. In analogy, contact bridge and contact can also be arranged on the shaft door and on the shaft or manhole frame.
  • the contact person himself can furthermore have a housing with mounting elements and the previously described insertion slot for the contact bridge.
  • the electronic unit can be equipped as a light guide plate (abbreviation: PCB) with a light-emitting diode (abbreviation: LED) and a corresponding photodiode as a receiver.
  • the divider can be arranged between transmitter and receiver accordingly.
  • corresponding contacts for example for contacting with the photodiode, allow a connection to a corresponding electronic unit.
  • the electronic unit can also be provided as a separate component or integrated into another part of the elevator. Basically, the light lock between transmitter and receiver can be effectively converted into an electrical signal.
  • the contact bridge can in turn have a mounting plate, a corresponding tongue with optical fibers, in which case the corresponding optical fibers can lead light from the LED to the photodiode when the tongue is retracted. If necessary, the corresponding parts can also be pre-assembled in particular.
  • a separate evaluation unit can be provided, which can communicate with the corresponding bus, for example, via an interface. It is particularly advantageous in the device according to the invention that no interruption of an electrical contact is provided, but only allows a transmission of a signal by optical means or prevented.
  • the device according to the invention is particularly easy to retrofit.
  • it has hitherto been particularly disadvantageous that in the case of a defect of a sensor, virtually all sensors in the individual storeys must be examined separately in this regard.
  • it may not be possible to detect whether it is the defect of a single sensor or multiple sensors, so that all sensors must be checked if necessary.
  • the states of the sensor d. H. Defective or not or open or not, can also be conveniently displayed centrally via an evaluation unit on a computer, control panel or the like.
  • the safety device can be used as a replacement part.
  • the connection to the opening switches e.g. conventional electromechanical switch, can be cut. Instead, the switching unit of the safety device is connected.
  • the cost of retrofitting can thus be significantly reduced. It is regularly enough to move in a longer connection line over the floors.
  • both lines to the old opening switches can usually be easily cut practically at a location near the control center.
  • retrofitting is a retrofit device in a corresponding, retrofitted Installed elevator device, wherein the elevator device has a safety circuit, which corresponds to the first safety circuit according to the invention and has opening switch.
  • the retrofit device comprises sensors which can be switched between at least two switching states as a function of the closed state of the elevator door.
  • the retrofit device comprises a switching unit which is to be used instead of the opening switch to be replaced.
  • the switching unit can be switched by means of the sensors. Sensors and switching unit can exchange information, for example, via modulation of the voltage / current or of the inherent resistance of the sensors.
  • FIG. 1 shows a sensor 1 with a contact 2 (shaft) and a contact bridge 3, wherein the contact bridge has reflection strips 9, which reflect light emitted by a transmitter of the contact 2 in the direction of a receiver of the contact 2.
  • FIG. 2 again shows the corresponding contact 2 with a transmitter 4 and a receiver 5, between which a divider 6 is arranged, in front view, side view and top view.
  • a divider 6 is arranged, in front view, side view and top view.
  • the contactor 2 has additional electrical connections, via which the sensor 1 can be connected to the rest of the Sersorvoruze or with the safety circuit.
  • FIG. 3 shows a contact bridge in different views in front view, side view and top view. These also include corresponding mounting aids 8.
  • transmission elements 9 slots are incorporated in the contact bridge 3, each having reflection surfaces.
  • the reflection units 9a, 9b, 9c there are three reflection units 9a, 9b, 9c, so that to some extent a dynamic contact detection is possible, since upon penetration of the contact bridge 3 in the contact 2 and in the optical light path first the reflection unit 9a, then the reflection unit 9b and finally 9c penetrate and thus a dynamic measurement of the signal in time dependence is possible.
  • FIG. 4 shows a sensor 1 'with a contactor 2 (slot) and a contact bridge 3', wherein the contact bridge has a light guide; the light emitted by a transmitter of the contactor 2 passes into the light guide input 4 ', propagates through the light guide and leaves the light guide output 5' again, so that it reaches the receiver of the contactor 2.
  • FIG. 5 again shows the corresponding contact 2, as he already too FIG. 2 has been described, which is also suitable for a sensor 1 'with light guide.
  • FIG. 6 shows a contact bridge 3 'in different views, in front view, side view and top view. This also includes corresponding mounting aids 8.
  • a transmission element L a light guide is incorporated into the contact bridge 3 ', through which the from Contact user can propagate emitted light signal. You can also see the light inlet 4 'and the light output 5'.
  • FIG. 7 shows such a penetration of the contact bridge 3 (with reflection strips) in the contactor 2, wherein in situation A, the contact bridge is not yet in communication with the contact 2.
  • the reflection unit 9a has just penetrated in the region of the optical path and transmits the light path from the transmitter to the receiver.
  • situation C the contact bridge 3 is just so that an interruption of the optical signal erfelgt because the contact bridge 3 in height is just between the reflection units 9b and 9c and the optical path is thus interrupted.
  • the contact bridge Only in situation D is the contact bridge, which is fully retracted into the contactor 2, in such a position that the optical path is not interrupted and the receiver 4 can pass light via the reflection element 9c into the detector / photodiode.
  • the reflection units 9, and also other transmission units such as optical media can have different shapes and provide characteristic reflections or light transmissions, so that these can also be identified by means of the receiver or the electronics unit, if appropriate.
  • FIG. 8 shows a similar view, in which the contact bridge 3 penetrates into the contact 2.
  • FIG. 9 again shows a security device with multiple optical sensors 10, which are all connected in series. Furthermore, there are a number of other electromechanical opening switches 11 which can be used in any other way in conjunction with a lift. In addition, a voltage source 13 is present. All these switches or sensors 11 and 10 are connected in series and connected to a switching unit 12. This circuit of a series connection of the switches 11, the sensors 10 and the switching unit 12 forms a safety circuit. If one of the switches 11 interrupted, so is the entire circuit interrupted, and the switching unit 12 switches off the motor M, which is the drive for the elevator car from.
  • the switches 11 may be opening switches of known type.
  • one of the sensors 10 detects that, for example, the elevator is not properly locked, it sends a corresponding signal via the circuit which is received by the communication unit of the switching unit 12 so that it can switch off the motor M. Accordingly, the switching unit 12 partially takes over the function of your relay; In addition, switching operations of the switching unit but also dependent on signals from the sensors. The switching unit 12 thus not only reacts to line breaks.
  • FIG. 10 shows a safety device with a safety device, namely a (second) safety circuit 14, with corresponding optical sensors 10.
  • This safety circuit is connected via a switching unit 12 'with the first safety circuit 16, which in turn has further sensor 11.
  • the switching unit 12 ' is similar to the switching unit 12 and has the same operation; This is in contrast to the switching unit 12 off FIG. 9 however, the voltage source is integrated with the switching unit 12 '.
  • the first safety circuit 16 is a contactor / relay 15, which in turn off a drive M.
  • the contactor 15 is merely designed to switch off the motor M in the event of a line interruption of the circuit 16. If one of the sensors 10 is optically interrupted, then the switching unit 12 'is interrupted and thus the line of the first safety circuit 16.
  • the contactor 15 switches off the motor M.
  • the sensors according to the invention are combined in a separate safety circuit 14 and connected via the switching unit 12 'to the original, first safety circuit 16.
  • the safety circuit 16 may partially use the wiring of the original safety device.
  • FIG. 10 is also shown how a retrofit of a conventional device can be done by the original first safety circuit 16 is cut at the points U and the second safety circuit 14 with the switching unit 12 'is used accordingly. It must be fed then only a longer cable K.
  • the communication device for communication with the control unit is presently not shown.
  • FIG. 11 shows a corresponding device in which instead of a second safety circuit as a safety device, a bus 20 is arranged.
  • the corresponding sensors 21 have an electronics unit, which enable a connection to the corresponding bus 20.
  • the bus is also connected to a switching unit 25, so when interrupting one of the optical sensor 21 this in turn sends a signal to the switching unit 25, which in turn interrupts the first safety circuit 26. With the contactor 15, the motor M is switched off due to the broken line of the safety circuit 26.
  • the switching unit 25 may form the master in the bus while the sensors 21 are in slave configuration.
  • FIG. 12 shows a similar device as FIG. 8 However, here the contactor 15 is additionally integrated into the switching unit 27, wherein the contactor shuts off the motor if necessary.
  • FIG. 13 shows an exemplary circuit diagram 30 for a lift gem. the invention.
  • FIG. 14 shows a sensor 41 in plan view and in a side view with a contact receiver 42 and a contact bridge 43, in which a light guide 44 is arranged.
  • the contact bridge 43 is designed overall as a light guide 44, ie it consists of the corresponding optical medium.
  • the contactor 42 includes a transmitter 45 and a receiver 46 for transmitting / receiving optical signals. The emitted by the transmitter 45 optical signal, as soon as the contactor 42 has received the contact bridge 43, propagate through the light guide 44 and enters the receiver 46.
  • the contact bridge 43 (or the light guide 44) is U-shaped and engages when it is plugged into the contactor 42, only with the two legs in the two shafts of the contact person 42 a.
  • the light guide 44 is accordingly also U-shaped.
  • FIG. 15 again shows the sensor 41 in a perspective view.
  • FIG. 16 shows a schematic representation of the communication in the safety circuit 14 between the controller 57 of the switching unit and the individual sensors 10 and their microcontroller microcontroller.
  • the units 50, 51 each correspond to a sensor. With the reference numerals 52, 53 variable resistors are shown. Each sensor is assigned a variable resistor.
  • the change of the resistance can take place in different ways: It is conceivable that resistances are connected in parallel to others, whereby the total resistance decreases accordingly. But it is also conceivable that circuit technology, for example by blocking individual transistors, the resistance is affected.
  • the change in resistance can be optically influenced, e.g. by phototransistors, photodiodes, optocouplers o. ⁇ .
  • the circuit includes constant current sources 54, 55, each of which is adapted to adjust its voltage as the resistance in the circuit changes so that a constant current flows.
  • Change of resistance (Communication: controller 57 to sensor 10) regulates the constant current source 54 to a constant current level so that the voltage measured across the voltmeter 56 changes.
  • the current intensity can also be modulated, i. the voltage does not remain constant (communication: sensor to controller).
  • the change in the voltage applied to the circuit can be determined by the voltmeter 58.
  • the states of the individual sensors or other data of the sensors can be output via an output 60.
  • the relay 59 is controlled according to the sensors.
  • FIG. 16 is a switching unit 12 '' shown, such as in FIG. 9 as a switching unit 12 or in FIG. 10 is shown as switching unit 12 '.
  • the switching unit 12 ' still comprises a voltage source.
  • the switching unit 12 off FIG. 9 In particular, it also includes the function of a relay which can also switch off the motor M when the line is interrupted.
  • the switching unit 12 is in FIG. 16 connected to a (second) safety circuit 14.
  • FIG. 17 shows accordingly a complete drive device according to the invention.
  • the drive device comprises a drive circuit N, via which the motor M is operated to drive the cabin.
  • the safety device is essentially the same as FIG. 10 .
  • the switching unit 12 'off Figure 1C is schematic in FIG. 17 as a switching unit 106, which comprises a breaker device 104 and a communication device or a controller 105 for data exchange with the control unit or lift controller 100 via a data line 103.
  • the lift controller 100 may also communicate with other devices of the elevator via input / output (I / O) interfaces 101. Further, the lift controller 100 is connected to the engine controller 102, which is in turn connected in the drive circuit N for controlling the motor M.
  • I / O input / output
  • the lift controller 100 transmits data via an I / O interface to a display device (not shown) or to the control centers for the elevator, including the data about the status of the safety device.
  • the lift controller 100 can not only display this status, but also appropriately control the motor control 102 with respect to the interruption of the drive circuit N.
EP20110009794 2011-12-12 2011-12-12 Sicherungsvorrichtung sowie Aufzugvorrichtung Active EP2604566B1 (de)

Priority Applications (6)

Application Number Priority Date Filing Date Title
EP20110009794 EP2604566B1 (de) 2011-12-12 2011-12-12 Sicherungsvorrichtung sowie Aufzugvorrichtung
US13/677,678 US8820482B2 (en) 2011-12-12 2012-11-15 Elevator monitor and drive safety apparatus
BR102012031603A BR102012031603A2 (pt) 2011-12-12 2012-12-11 Dispositivo de segurança e instalação de elevador
BR102012031717A BR102012031717A2 (pt) 2011-12-12 2012-12-12 dispositivo comutador e instalação de elevador
CN201210536263.5A CN103159103B (zh) 2011-12-12 2012-12-12 安全装置和电梯装置
BR102012031711A BR102012031711A2 (pt) 2011-12-12 2012-12-12 dispositivo de segurança e dispositivo elevador

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20110009794 EP2604566B1 (de) 2011-12-12 2011-12-12 Sicherungsvorrichtung sowie Aufzugvorrichtung

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EP2604566A1 EP2604566A1 (de) 2013-06-19
EP2604566B1 true EP2604566B1 (de) 2014-03-26

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CN103159103B (zh) 2017-07-07
BR102012031711A2 (pt) 2019-01-08
US20130146398A1 (en) 2013-06-13
BR102012031717A2 (pt) 2015-10-20
BR102012031603A2 (pt) 2014-04-29
US8820482B2 (en) 2014-09-02
EP2604566A1 (de) 2013-06-19
CN103159103A (zh) 2013-06-19

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