EP3805139A1 - Control device and method for engaging an arresting device - Google Patents

Abstract

The present invention relates to a device for engaging a safety gear in elevators, comprising means for detecting position-dependent operating parameters of the elevator system, a revolving release rope, coupling means for coupling the release rope to the safety gear of the car, an intelligent, safe shaft copying system, an elevator control for exchanging control parameters with the intelligent safe shaft copying system and at least one braking means for triggering a braking force on the release rope, the at least one braking means can be activated via a brake control signal by the intelligent safe shaft copying system depending on the position-dependent operating parameters of the elevator system and thereby the safety device of the via the release rope and the coupling means Car can be activated and a method for engaging a safety gear in elevators.

Description

1. Technical field

The invention relates to a device and a method for triggering a safety gear in elevators, in particular in traction sheave elevators, for use in building technology when modernizing or building new elevators according to the preambles of independent claims 1 and 11.

2. State of the art

Combinations of conventional (i.e. mechanical) overspeed governors and mechanical safety gears are known, which are mechanically coupled via a release rope.

For example, describes the WO 2010 046 489 A1 a speed limiter in an elevator system, with a reset device for a brake of the speed limiter, the brake being mechanically and remotely releasable and releasable. For this purpose, the overspeed governor is equipped with a remote-controlled release mechanism, for example a magnetic switch. The speed limiter is the detector for the overspeed and acts as an actuator to trigger the safety gear.

Furthermore, a combination of shaft copying systems with evaluation units of absolute value encoders, for example based on perforated tapes, magnetic tapes or optical tapes and electrically triggered safety devices, for example by opening valves or dropping magnets, is known.

The shaft copying system is the detector for the overspeed and controls the actuator to trigger the safety gear.

In previously known solutions, it is disadvantageous that conventional speed governors always have to be mechanically set / calibrated system-specifically. In addition, conventional overspeed governors have many moving parts and are therefore a source of noise.

Another disadvantage is that conventional speed governors can only be installed to a limited extent due to their design. It is therefore often necessary to change a setting for a different installation position, such as hanging or standing.

Another disadvantage is that the fail-safe principles electrically triggered safety gear are usually designed in such a way that an operating voltage must be maintained for normal operation, i.e. for 100% of the time, in order not to trigger the safety gear. This means a permanent stand-by power requirement, which is not the case with mechanical solutions.

Another disadvantage of known solutions is that in the event of a power failure, the safety gear will always be triggered. As a rule, therefore, an uninterruptible power supply, battery backup, etc. must also be provided.

In the assembly phase, in which conventional safety gears have often already ensured the safety of assembly personnel, a comparable implementation of the control is difficult with the electrical solutions now known, since the triggering system (shaft copying) is often not yet ready for operation or a permanent power supply is not guaranteed .

3. Task

It is therefore the object of the invention to provide a combination of the evaluation unit as a detecting system and a conventional safety gear in order to combine the advantages of the intelligent shaft copying device with those of the conventional safety gear and thereby the use of a safety gear in combination with a triggering absolute value encoder system as protection Allow crashes and overspeed during the assembly and operation phases. Furthermore, the use of a braking device which cannot be set in advance and which can be pre-produced in large numbers for the releasing rope of the safety gear, which can be used completely independently of both speed and direction, is to be made possible. The invention should be equally suitable for use in new systems as well as for modernization solutions in which an existing safety gear cannot or should not be replaced.

This object is achieved by a control device with the features of independent patent claim 1 and a method for triggering a safety gear with the features of independent patent claim 11. Preferred embodiments can be found in the dependent claims.

According to the invention, the following is provided to achieve the object:
The use of a safe, intelligent shaft copying device with an integrated evaluation unit or a separate evaluation unit as a system for recognizing operating parameters of the elevator system that differ from normal operation, for example excessive speed, or unintentional or atypical movements with or without closed doors.

The intelligent shaft copying device comprises means for position-dependent acquisition of operating parameters of the elevator system.

The integrated evaluation unit or separate evaluation unit of the intelligent shaft copying device advantageously comprises an integrated or remote analog or digital computer with processor, program memory and data memory and interface for data acquisition and optionally for programming.

Means for recording the position values of the car and / or the counterweight continuously or at defined time intervals.

From this, the integrated or separate evaluation unit of the intelligent shaft copying device forms the time-dependent position s (t) F and from it the actual speed v (t) F by one-time differentiation according to the time depending on s (t) F and / or by two-fold differentiation according to the Time, the actual acceleration a (t) F of the car and / or the time-dependent position s (t) G and, depending on this, depending on s (t) G, the actual speed v (t) G and depending on the time by differentiation / or the actual acceleration a (t) G of the car of the counterweight by two differentiation according to time. Advantageously, further differentiations according to time can also take place in each case in order to increase the differential response sensitivity in the event of changes in the time course of the position s (t) F and / or s (t) G.

Acquisition of the control parameters of the elevator control such as "ascent" or "descent" or intended "start position" and intended "stop position", speed or acceleration professional, etc.

The correlation of these values is preferably determined taking into account the control parameters and optionally taking into account the car load in one or more calibration runs and as at least one target value curve or a target value profile with defined ranges of permissible values for the position-dependent target speed and / or the position-dependent target acceleration and / or possibly further position-dependent derivatives of the target acceleration are stored. It is advantageous that a tolerance band or a profile with defined ranges of permissible values for the nominal value curve is formed in each case. If the position-dependent setpoint speed and / or setpoint acceleration and / or other derivatives of the setpoint acceleration deviate from the respective setpoint within the tolerance band or within the setpoint profile, the safety gear is triggered via means for braking the release rope, whereby the conventional safety gear of the elevator system intervenes.

Advantageously, the respective tolerance band can be recorded continuously during driving operation and stored in a self-learning manner and thus updated. Continuous adaptation of the setpoint bands or the setpoint profile for the position-dependent speed and / or the position-dependent acceleration of the car and / or the counterweight is possible in order to detect changes and load conditions that occur in practice and make them tolerable. A defined maximum tolerance band can be specified as a limitation of the tolerable changes.

The position values of the car and / or the counterweight can advantageously be detected by optical, magnetic and / or acoustic incremental or absolute value sensors. A first derivative and / or a second derivative is preferably formed by an integrated or separate evaluation unit by differentiating the at least once and / or at least twice Position value according to time. The result is the speed and / or the acceleration of the car and / or the counterweight.

Alternatively or additionally, the speed can be detected by speed-proportional means such as inductive sensors, which detect the respective speed depending on the position of the car and / or the counterweight and forward it as an actual value to the intelligent shaft copying device.

Optionally, the intelligent shaft copying device can determine the position of the car and / or the counterweight by integrating it once. The position of the door switches is advantageously used as an initial value and / or as an intermediate value as intermediate and support values of the positions.

Optionally, the intelligent shaft copying device can determine the position-dependent acceleration values from the speed signal by differentiation.

Alternatively or additionally, the acceleration can be detected by means of acceleration proportional, such as at least one inertial acceleration sensor, which detects the respective acceleration depending on the position of the car and / or the counterweight and forwards it as an actual value to the intelligent shaft copying device.

Optionally, the intelligent shaft copying device can determine the speed of the car and / or the counterweight by integrating once and / or the position of the car and / or the counterweight by integrating twice. The position of the Position sensors of a conventional shaft copying system and / or the door switches are used as intermediate and support values for the positions.

Optionally, the intelligent shaft copying device can use differentiation to determine at least one position-dependent derivation of the acceleration value from the acceleration signal, which derives particularly sensitive critical changes in the position-dependent course of movement of the car and / or the counterweight.

Optionally, the means for position-dependent acquisition of operating parameters of the elevator system include means for acquiring the structure-borne noise on components of the elevator system, such as on the revolving release rope and / or on the car rails and / or on the propellants. The frequency spectrum contained therein can be analyzed, for example, by means of a fast Fourier transform analysis. The frequency spectrum determined in normal operation serves as a reference or, together with a defined tolerance band, as a setpoint spectrum. During operation, the frequency spectrum is continuously monitored and compared as an actual value with the setpoint spectrum. In the event of a deviation, for example with a changed frequency spectrum due to changed friction of the propellant or insufficient lubrication of the running rails etc., the safety device is triggered controlled by the intelligent shaft copying device via means for braking the release rope, whereby the conventional safety device of the elevator system intervenes.

This advantageously results in the possibility of defining various release speeds, release accelerations or other derivatives according to time or of frequency-specific acoustic or mechanical vibrations in the operating parameters of the elevator system depending on the position, the direction or the operating state (normal operation / inspection / assembly / ...) the driver's cab and / or the counterweight.

This enables the monitoring of position-dependent, optionally load-dependent and control-dependent such as direction-of-travel and / or start / stop-dependent overspeed, or unintentional or atypical movements or accelerations with or without closed doors and, if necessary, the triggering of the elevator system's safety gear.

It is advantageous if a revolving alternative or additional release rope is used to release the safety gear, which acts on the safety gear in a manner analogous to a speed limiter rope. The alternative or additional revolving release rope is used to trigger the safety gear in the same way as a speed limiter rope. The alternative or additional release cable comprises a flexible material with high tear resistance transverse to the direction of rotation, for example a steel cable or a plastic-coated steel cable, a fiber cable, a belt, a belt or a chain.

Advantageously, two guide pulleys, mounted in any position, for example hanging, standing or sideways, in the shaft head and in the shaft pit can be used to guide the revolving release cable.

The pulleys and their attachments, in particular the braking means and the means for detecting position-dependent operating parameters of the elevator system, are also independent of the installation position, direction of rotation and speed and no presetting or calibration of direction or speed is required.

The tension of the revolving release rope is maintained by means of springs and / or weights via the lower pulley or the upper pulley or both pulleys.

The braking means comprises a braking device on at least one deflection pulley of the release rope, which the braking effect via form or frictional engagement and mechanically, hydraulically or pneumatically, for example via bolts, brake linings or the like, on at least one deflection pulley or add-on parts such as brake disks, perforated disks or the like of the deflection pulley of the release rope.

As an alternative or in addition, the braking means comprises a cable brake, by means of which the braking force can also be applied directly to the release cable.

The braking means is advantageously kept open by electrical voltage and is applied immediately when the voltage is removed by gravity, secure springs or the like, so that a fail-safe principle is also achieved as a result.

The braking device can be applied at any time to save electricity when the vehicle is stationary and released again before the next trip.

The actuation of the braking means can be monitored via one or more brake contacts; so that the open, the closed or both states can be recognized by the intelligent, secure shaft copying system.

When the voltage drops after a triggering criterion has been detected, for example an overspeed, the brake is applied, at least one deflection pulley and / or the triggering rope brakes directly. This activates the safety gear via the release rope.

Optionally, additional switches can be integrated into a circuit to control the braking device, which enable the safety gear to be triggered for test purposes or in the event of other safety requirements, for example for monitoring protected areas or during assembly activities. It is advantageous that the use of an alternative or additional revolving release rope to release the safety gear is analogous to a speed limiter rope.

The alternative or additional circumferential release rope comprises a material that is flexible transversely to the direction of rotation and has high tear resistance, for example a steel cable or a plastic-coated steel cable, a fiber rope, a belt, a belt or a chain.

The alternative or additional revolving release rope can be guided using two guide pulleys that can be mounted in any position.

It is advantageous that the pulleys, the braking means and the means for detecting position-dependent operating parameters of the elevator system are independent of the installation position, the direction of rotation and the speed and that no presetting or calibration of direction or speed is required.

The tension of the revolving release rope can be maintained via the lower pulley or the upper pulley or over both pulleys by means of springs and / or weights.

The intelligent, safe shaft copying system, together with the means for detecting position-dependent operating parameters of the elevator system, is according to the invention the detector for overspeed and / or movements that deviate from a target tolerance range, such as position deviations, speed deviations, deviating accelerations, deviations in the third or higher degree differentiation of the position of the car and / or the counterweight according to the time and / or for exceptional acoustic and / or mechanical Vibrations in the elevator system and controls the braking device for the release rope as an actuator to release the safety gear.

The intelligent, secure shaft copying system can in particular comprise a stationary coded tape which is read or scanned by a reading head. The reading head can be permanently connected to a car or a cabin. The fixed encoded tape can comprise a magnetic tape, a perforated tape or the like. With this refinement, a clear determination of the position of the car can always be provided. In this way, a safe system can advantageously be provided through redundant scanning and constant comparison of the values.

• Verwendung einer sicheren intelligenten Schachtkopierungsvorrichtung mit integrierter Auswerteeinheit oder separater Auswerteeinheit als System zur Erkennung von ausgehend vom Normalbetrieb abweichenden Betriebsparametern der Aufzugsanlage, beispielsweise der Übergeschwindigkeit, oder unbeabsichtigter oder untypischer Bewegungen mit oder ohne geschlossene Türen.
• Erfassung von positionsabhängigen Betriebsparametern der Aufzugsanlage durch die Schachtkopierungsvorrichtung
• Erfassung von zeitlich kontinuierlichen oder in zeitlich definierten Abständen der Positionswerte des Fahrkorbs und/oder des Gegengewichts.
• Erfassen der zeitabhängigen Position s(t)F und davon durch einmalige Differentiation nach der Zeit abhängig von s(t)F Bestimmung der Ist-Geschwindigkeit v(t)F und/oder durch zweimalige Differentiation nach der Zeit Bestimmung der Ist-Beschleunigung a(t)F des Fahrkorbs und/oder der zeitabhängigen Position des Gegengewichts s(t)G und davon abhängig von s(t)G Bestimmung durch einmalige Differentiation nach der Zeit der Ist-Geschwindigkeit v(t)G und/oder Bestimmung durch zweimalige Differentiation nach der Zeit der Ist-Beschleunigung a(t)G des Gegengewichts durch eine integrierte oder separate Auswerteeinheit der intelligenten Schachtkopierungsvorrichtung.
• Optional können jeweils auch weitere Differentiationen nach der Zeit erfolgen, um so die differentielle Ansprechempfindlichkeit bei Veränderungen des zeitlichen Verlaufs der Position s(t)F und oder s(t)G zu erhöhen.
• Optional Erfassung der Fahrkorblast
• Erfassung der Steuerungsparameter der Aufzugssteuerung wie beispielsweise "Auffahrt" oder "Abfahrt" oder vorgesehene "Startposition" und vorgesehene "Stoppposition", Geschwindigkeits- oder Beschleunigungsprofi etc.
• Korrelation dieser Werte, vorteilhaft unter Berücksichtigung der Steuerungsparameter und optional unter Berücksichtigung der Fahrkorblast, welche in einer oder mehreren Eichfahrten ermittelt und als wenigstens eine Sollwertkurve oder ein Sollwertprofil mit definierten Bereichen zulässiger Werte für die positionsabhängige Sollgeschwindigkeit und/oder die positionsabhängige Sollbeschleunigung und/oder gegebenenfalls weiterer positionsabhängiger Ableitungen der Sollbeschleunigung abgespeichert werden.
• Optional wird dabei jeweils ein Toleranzband oder ein Profil mit definierten Bereichen zulässiger Werte für den Sollwertverlauf gebildet. Bei Abweichung der positionsabhängigen Sollgeschwindigkeit und/oder Sollbeschleunigung und/oder weiterer Ableitungen der Sollbeschleunigung vom jeweiligen Sollwert innerhalb des Toleranzbandes oder innerhalb des Sollwerteprofils erfolgt die Auslösung der Fangvorrichtung über Mittel zum Bremsen des Auslöseseils, wodurch die konventionelle Fangvorrichtung der Aufzugsanlage eingreift.
• Optional kann das jeweilige Toleranzband während des Fahrbetriebes laufend erfasst und selbstlernend abgespeichert und damit aktualisiert werden. So ist eine laufende Anpassung der Sollwertbänder oder des Sollwerteprofils für die positionsabhängige Geschwindigkeit und/oder die positionsabhängige Beschleunigung des Fahrkorbs und/oder des Gegengewichts möglich, um dadurch in der Praxis auftretende Veränderungen und Lastzustände zu erfassen und tolerierbar zu machen. Vorteilhafter Weise kann dabei ein definiertes maximales Toleranzband als Begrenzung der tolerierbaren Veränderungen vorgegeben werden.
• Optional alternative oder zusätzliche Erfassung der Geschwindigkeit durch geschwindigkeitsproportionale Mittel wie beispielsweise induktive Sensoren erfolgen, welche abhängig von der Position des Fahrkorbs und/oder des Gegengewichtes die jeweilige Geschwindigkeit erfassen und als Istwert an die intelligente Schachtkopierungsvorrichtung weiterleiten.
• Optional kann die intelligente Schachtkopierungsvorrichtung daraus durch einmalige Integration die Position des Fahrkorbs und/oder des Gegengewichts ermitteln. Vorteilhaft werden dabei als Anfangswert und/oder als Zwischenwert die Position der Türschalter als Zwischen- und Stützwerte der Positionen herangezogen.
• Optional kann die intelligente Schachtkopierungsvorrichtung aus dem Geschwindigkeitssignal durch Differentiation die positionsabhängigen Beschleunigungswerte ermitteln.
• Optional alternative oder zusätzliche Erfassung der Beschleunigung durch beschleunigungsproportionale Mittel wie beispielsweise wenigstens einen inertialen Beschleunigungssensor, welcher abhängig von der Position des Fahrkorbs und/oder des Gegengewichtes die jeweilige Beschleunigung erfasst und als Istwert an die intelligente Schachtkopierungsvorrichtung weiterleitet.
• Optional kann die intelligente Schachtkopierungsvorrichtung daraus durch einmalige Integration die Geschwindigkeit des Fahrkorbs und/oder des Gegengewichts und/oder durch zweimalige Integration die Position des Fahrkorbs und/oder des Gegengewichts ermitteln. Vorteilhafter Weise werden dabei als Anfangswert und/oder Zwischenwert die Position der Positionssensoren eines konventionellen Schachtkopierungssystems und/oder die Türschalter als Zwischen- und Stützwerte der Positionen herangezogen.
• Optional kann die intelligente Schachtkopierungsvorrichtung aus dem Beschleunigungssignal durch Differentiation wenigstens eine positionsabhängige Ableitung des Beschleunigungswertes ermitteln, welche besonders empfindlich kritische Veränderungen des positionsabhängigen Bewegungsverlaufs des Fahrkorbs und/oder des Gegengewichts anzeigen.
• Optional umfassen die Mittel zur positionsabhängigen Erfassung von Betriebsparametern der Aufzugsanlage Mittel zur Erfassung des Körperschalls an Komponenten der Aufzugsanlage, wie beispielsweise am umlaufenden Auslöseseil und/oder an den Fahrkorbschienen und/oder an den Treibmitteln. Vorteilhafter Weise erfolgt eine Analyse des darin enthaltenen Frequenzspektrums, beispielhaft mittels einer Fast-Fourier-Transformations-Analyse. Das im Normalbetrieb ermittelte Frequenzspektrum dient dabei als Referenz oder zusammen mit einem definierten Toleranzband als Sollwertespektrum. Im Betrieb wird das Frequenzspektrum laufend überwacht und als Istwert mit dem Sollwertespektrum verglichen. Bei Abweichung, beispielsweise bei verändertem Frequenzspektrum aufgrund von veränderter Friktion der Treibmittel oder bei mangelnder Schmierung der Laufschienen etc., erfolgt gesteuert von der intelligenten Schachtkopierungsvorrichtung die Auslösung der Fangvorrichtung über Mittel zum Bremsen des Auslöseseils, wodurch die konventionelle Fangvorrichtung der Aufzugsanlage eingreift.
• Definition verschiedener Auslösegeschwindigkeiten, Auslösebeschleunigungen oder weiterer Ableitungen nach der Zeit in Abhängigkeit von der Position, der Richtung oder dem Betriebszustand, beispielsweise Normalbetrieb oder Inspektion oder Montage.
• Überwachung von positionsabhängiger, optional lastabhängiger und steuerungsabhängiger wie beispielsweise fahrtrichtungsabhängiger und/oder start/stopp-abhängiger Geschwindigkeit, oder unbeabsichtigter oder untypischer Bewegungen mit oder ohne geschlossene Türen.
• Auslösung der Fangvorrichtung bei Abweichung von einem zulässigen Toleranzbereich positionsabhängiger, optional lastabhängiger und steuerungsabhängiger wie beispielsweise fahrtrichtungsabhängiger und/oder start/stopp-abhängiger Geschwindigkeit und/oder bei Abweichung von einem positionsabhängigen, optional lastabhängigen und steuerungsabhängigen wie beispielsweise fahrtrichtungsabhängigen zulässigen Toleranzbereich unbeabsichtigter oder untypischer Beschleunigungen mit oder ohne geschlossene Türen.

A method of engaging a safety gear includes the following steps:

• Use of a safe, intelligent shaft copying device with an integrated evaluation unit or separate evaluation unit as a system for detecting operating parameters of the elevator system that differ from normal operation, for example excessive speed, or unintentional or atypical movements with or without closed doors.
• Acquisition of position-dependent operating parameters of the elevator system by the shaft copying device
• Acquisition of the position values of the car and / or the counterweight that are continuous over time or at defined time intervals.
• Acquisition of the time-dependent position s (t) F and from it through one-time differentiation according to the time dependent on s (t) F determination of the actual speed v (t) F and / or by two-fold differentiation according to the time determination of the actual acceleration a (t) F of the car and / or the time-dependent position of the counterweight s (t) G and dependent thereon on s (t) G determination single differentiation according to the time of the actual speed v (t) G and / or determination by double differentiation according to the time of the actual acceleration a (t) G of the counterweight by an integrated or separate evaluation unit of the intelligent shaft copying device.
• Optionally, further differentiations according to time can also take place in each case in order to increase the differential response sensitivity in the event of changes in the temporal course of the position s (t) F and / or s (t) G.
• Optional acquisition of the car load
• Acquisition of the control parameters of the elevator control such as "ascent" or "descent" or intended "start position" and intended "stop position", speed or acceleration professional, etc.
• Correlation of these values, advantageously taking into account the control parameters and optionally taking into account the car load, which is determined in one or more calibration runs and as at least one target value curve or a target value profile with defined ranges of permissible values for the position-dependent target speed and / or the position-dependent target acceleration and / or possibly further position-dependent derivatives of the target acceleration can be stored.
• Optionally, a tolerance band or a profile with defined ranges of permissible values for the setpoint curve is formed in each case. If the position-dependent target speed and / or target acceleration and / or further derivations of the target acceleration deviate from the respective target value within the tolerance band or within the target value profile, the safety device is triggered by means of braking the release rope, whereby the conventional safety device of the elevator system intervenes.
• Optionally, the respective tolerance band can be continuously recorded during driving and stored in a self-learning manner and thus updated. Continuous adjustment of the setpoint bands or the setpoint profile for the position-dependent speed and / or the position-dependent acceleration of the car and / or the counterweight is possible in order to detect changes and load conditions that occur in practice and make them tolerable. A defined maximum tolerance band can advantageously be specified as a limitation of the tolerable changes.
• Optional alternative or additional detection of the speed by speed-proportional means such as inductive sensors, which detect the respective speed depending on the position of the car and / or the counterweight and forward it as an actual value to the intelligent shaft copying device.
• Optionally, the intelligent shaft copying device can determine the position of the car and / or the counterweight by integrating it once. It is advantageous as an initial value and / or the position of the door switches is used as an intermediate value as intermediate and supporting values of the positions.
• Optionally, the intelligent shaft copying device can determine the position-dependent acceleration values from the speed signal by differentiation.
• Optional alternative or additional detection of the acceleration by means of acceleration-proportional means such as at least one inertial acceleration sensor, which detects the respective acceleration depending on the position of the car and / or the counterweight and forwards it as an actual value to the intelligent shaft copying device.
• Optionally, the intelligent shaft copying device can determine the speed of the car and / or the counterweight by integrating once and / or the position of the car and / or the counterweight by integrating twice. Advantageously, the position of the position sensors of a conventional shaft copying system and / or the door switches as intermediate and support values of the positions are used as the initial value and / or intermediate value.
• Optionally, the intelligent shaft copying device can use differentiation to determine at least one position-dependent derivation of the acceleration value from the acceleration signal, which derives particularly sensitive critical changes in the position-dependent course of movement of the car and / or the counterweight.
• Optionally, the means for position-dependent detection of operating parameters of the elevator system include means for detecting the Structure-borne noise on components of the elevator system, such as on the revolving release rope and / or on the elevator car rails and / or on the propellants. The frequency spectrum contained therein is advantageously analyzed, for example by means of a fast Fourier transform analysis. The frequency spectrum determined in normal operation serves as a reference or, together with a defined tolerance band, as a setpoint spectrum. During operation, the frequency spectrum is continuously monitored and compared as an actual value with the setpoint spectrum. In the event of a deviation, for example with a changed frequency spectrum due to changed friction of the propellant or insufficient lubrication of the running rails etc., the safety device is triggered controlled by the intelligent shaft copying device via means for braking the release rope, whereby the conventional safety device of the elevator system intervenes.
• Definition of different release speeds, release accelerations or other derivations according to time depending on the position, the direction or the operating status, for example normal operation or inspection or assembly.
• Monitoring of position-dependent, optionally load-dependent and control-dependent such as direction-dependent and / or start / stop-dependent speed, or unintentional or atypical movements with or without closed doors.
• Triggering of the safety gear in the event of a deviation from a permissible tolerance range of position-dependent, optionally load-dependent and control-dependent such as, for example, direction-dependent and / or start / stop-dependent speed and / or in the event of a deviation from a position-dependent, optionally load-dependent and control-dependent such as Direction of travel-dependent permissible tolerance range of unintentional or atypical accelerations with or without closed doors.

5. Brief description of the drawings

• Fig. 1 eine Vorrichtung zum Einrücken einer Fangvorrichtung bei Aufzügen mit Bremsbacken wirkend auf die obere Umlenkrolle des Auslöseseils und in
• Fig. 2 eine Vorrichtung zum Einrücken einer Fangvorrichtung bei Aufzügen mit Bremswirkung des Auslöseseils durch eine Seilbremse.

In the following, exemplary embodiments of the invention are described with reference to figures. These figures show in

• Fig. 1 a device for engaging a safety gear in elevators with brake shoes acting on the upper pulley of the release rope and in
• Fig. 2 a device for engaging a safety gear in elevators with braking action of the release rope by a rope brake.

6. Detailed description

Embodiments of the present invention are described below only by way of example. These examples illustrate the best ways of putting the invention into practice that are currently known to the applicant, although of course these are not the only ways in which this could be achieved. The description sets forth the functions of the example and the sequence of steps for creating and operating the example. However, the same or equivalent functions and sequences may be achieved from other examples.

Fig. 1 shows a device for engaging a safety gear in elevators, comprising means for detecting position-dependent operating parameters 120 of the elevator system, a revolving release rope 4, an upper pulley 6 for the trigger rope 4, a lower pulley 2 for the trigger rope 4, coupling means 3 for coupling the trigger rope 4 to the safety device 20 of the car 10, an intelligent, secure shaft copying system 100, an elevator control 200 for exchanging control parameters 210 with the intelligent, secure one Shaft copying system 100 and at least one braking means 110 for triggering a braking force on the upper deflection roller 6 of the release rope 4 and / or on the lower deflection roller 2 of the release rope 4 and / or on the release rope 4, the at least one braking means 110 in this embodiment via brake shoes the upper deflection pulley 6 of the release rope 4 acts and can be activated via a brake control signal 101 by the intelligent safe shaft copying system 100 depending on the position-dependent operating parameters 120 of the elevator system and thereby the safety gear 20 of the car 10 can be activated via the release rope 4 and the coupling means 3.

In this example, F1 is a downward force component which is generated, for example, by a spring or a weight and via the bearing of the lower deflection roller 1, the lower deflection roller 2 tensions the release cable 4. Optional means for load detection 30 include, for example, a force sensor or a load cell for detecting the weight force acting on the car 10 relative to the car suspension.

Fig. 2 shows a device for engaging a safety gear in elevators, comprising means for detecting position-dependent operating parameters 120 of the elevator system, a revolving release rope 4, an upper pulley 6 for the trigger rope 4, a lower pulley 2 for the trigger rope 4, coupling means 3 for coupling the trigger rope 4 to the safety gear 20 of the car 10, an intelligent, safe shaft copying system 100, an elevator control 200 for exchanging control parameters 210 with the intelligent safe shaft copying system 100 and at least one braking means 110 for releasing a braking force on the release rope 4, the at least one braking means 110 in This exemplary embodiment is designed as a rope brake which acts on the release rope 4 and via a brake control signal 101 through the intelligent safe shaft copying system 100 as a function of the position-dependent operating parameters 120 of the elevator system can be activated and thereby the safety device 20 of the car 10 can be activated via the release rope 4 and the coupling means 3.

In this example, F1 is a downward force component which is generated, for example, by a spring or a weight and via the bearing of the lower deflection roller 1, the lower deflection roller 2 tensions the release cable 4. Optional means for load detection 30 include, for example, a force sensor or a load cell for detecting the weight force acting on the car 10 relative to the car suspension.

List of reference symbols used:

• 1 bearing of the lower pulley of the release rope
• 2 lower pulley of the release rope
• 3 coupling agents
• 4 release rope
• 5 Bearings of the upper pulley of the release rope
• 6 upper pulley of the release rope
• 10 car
• 20 safety gear
• 30 optional means of load measurement
• 100 intelligent safe shaft copying system
• 101 Brake control signal
• 110 braking means
• 120 means for recording position-dependent operating parameters
  the elevator system
• 200 elevator control
• 210 control parameters
• F1 downward force component

Claims (15)

Device for engaging a safety gear in elevators, comprising means for recording position-dependent operating parameters (120) of the elevator system, a revolving release rope (4), an upper pulley (6) for the trigger rope (4), a lower pulley (2) for the trigger rope (4), coupling means (3) for coupling the release rope (4) to the safety gear (20) of the car (10), an intelligent, safe shaft copying system (100), an elevator control (200) for exchanging control parameters (210) with the intelligent safe shaft copying system (100) and at least one braking means (110) for releasing a braking force on the upper deflection pulley (6) of the release rope (4) and / or on the lower deflection roller (2) of the release rope (4) and / or on the release rope ( 4), the at least one brake means (110) via a brake control signal (101) through the intelligent, secure shaft copying system (100) as a function of the position-dependent operating parameters parameters (120) of the elevator system can be activated and thereby the safety gear (20) of the car (10) can be activated via the release rope (4) and the coupling means (3). Device for engaging a safety gear in elevators according to claim 1, characterized in that the means for detecting position-dependent operating parameters (120) means for detecting the position s (t) F of the car (10) and the first derivative according to the time v (t) F and / or the second derivative according to time a (t) F and optionally further derivatives of s (t) F according to time. Device for engaging a safety gear in elevators according to claim 1, characterized in that the means for detecting position-dependent operating parameters (120) means for Position detection s (t) G of the counterweight and the first derivative according to time v (t) G and / or the second derivative according to time a (t) G and possibly further derivatives of s (t) G according to time. Device for engaging a safety gear in elevators according to claim 1, characterized in that the means for detecting position-dependent operating parameters comprises means for detecting the structure-borne noise in the elevator shaft. Device for engaging a safety gear in elevators according to claim 4, characterized in that the means for detecting the structure-borne noise in the elevator shaft comprises means for analyzing the frequency spectrum of the structure-borne noise on the revolving rope, on the car rails, on the car and / or on the propellants. Device for engaging a safety gear in elevators according to one of the preceding claims, characterized in that the means for detecting position-dependent operating parameters (120) additionally comprises means for detecting the load (30). Device for engaging a safety gear in elevators according to one of the preceding claims, characterized in that the braking means (110) comprises a braking device on at least one deflection roller (2, 6) of the release rope (4), which the braking effect via form or frictional engagement and mechanically , hydraulically or pneumatically, on at least one of the deflection pulley (2, 6) or attachments of the deflection pulley (2, 6) of the release rope (4), or that the braking means (110) alternatively or additionally comprises a rope brake, through which the braking force directly can be applied to the release rope (4). Device for engaging a safety gear in elevators according to One of the preceding claims, characterized in that the braking means (110) is kept open by electrical voltage and is applied immediately when the voltage is removed by gravity and / or secure springs or the like. Device for engaging a safety gear in elevators according to one of the preceding claims, characterized in that the braking means (110) can be applied at any time to save electricity when the vehicle is stationary and can be released again before the next trip. Device for engaging a safety gear in elevators according to one of the preceding claims, characterized in that one or more brake contacts are provided for monitoring the actuation of the braking means (110) so that the open, the closed or both states of the intelligent, secure shaft copying system (100 ) can be recognized. A method for engaging a safety gear in elevators, comprising the steps of: Use of a secure, intelligent shaft copying device (100) according to one of the preceding claims 1 to 18. • Acquisition of position-dependent operating parameters of the elevator system by the shaft copying device (100). • Detection of the position values s (t) F of a car (10) and / or s (t) G of a counterweight that are continuous over time or at defined time intervals. • Detection of the time-dependent position s (t) F and of it by one-time differentiation according to time depending on s (t) F determination of the actual speed v (t) F and / or determination of the actual acceleration a by two differentiation according to time (t) F of the car (10) and / or the time-dependent position of the counterweight s (t) G and depending on s (t) G Determination by single differentiation according to the time of the actual speed v (t) G and / or determination by double differentiation according to the time of the actual acceleration a (t) G of the counterweight by an integrated or separate Evaluation unit of the intelligent shaft copying device (100). • Acquisition of the control parameters of an elevator control such as "ascent" or "descent" or intended "start position" and intended "stop position", speed or acceleration profile. • Correlation of these values taking into account the control parameters and optionally taking into account the car load, which is determined in one or more calibration runs and as at least one target value curve or a target value profile with defined ranges of permissible values for the position-dependent target speed and / or the position-dependent target acceleration and / or possibly others position-dependent derivatives of the target acceleration are stored. • Definition of different release speeds, release accelerations or other derivations according to time depending on the position, the direction or the operating status, for example normal operation or inspection or assembly. • Monitoring of position-dependent, optionally load-dependent and control-dependent such as direction-dependent and / or start / stop-dependent speed, or unintentional or atypical movements with or without closed doors. • Triggering of the safety gear in the event of a deviation from a permissible tolerance range of position-dependent, optionally load-dependent and control-dependent such as travel direction-dependent and / or start / stop-dependent speed and / or deviation from a position-dependent, optionally load-dependent and control-dependent such as Direction of travel-dependent permissible tolerance range of unintentional or atypical accelerations with or without closed doors. A method of engaging an elevator safety gear according to claim 11, further comprising the steps of: • Carrying out further differentiations according to time in order to increase the differential response sensitivity in the event of changes in the temporal course of the position s (t) F and / or s (t) G. A method of engaging an elevator safety gear according to claim 11 or 12, further comprising the steps of: • Detection of the car load. • Formation of a tolerance band or a profile with defined ranges of permissible values for the setpoint curve. • Triggering of the safety gear via means for braking the release rope (4), whereby the conventional safety gear of the elevator system intervenes if the position-dependent target speed and / or target acceleration deviate and / or other derivations of the target acceleration from the respective target value within the tolerance band or within the target value profile. A method of engaging a safety gear in elevators according to any one of claims 11 to 13, further comprising the steps of: • Continuous recording of the respective tolerance band during travel and self-learning storage and thus updating, which enables continuous adjustment of the setpoint bands or the setpoint profile for the position-dependent speed and / or the position-dependent acceleration of the car and / or the counterweight, thereby enabling in practice to record occurring changes and load conditions and to make them tolerable. A method of engaging a safety gear in elevators according to any one of claims 11 to 14, further comprising the steps of: • Provision of means for position-dependent acquisition of operating parameters of the elevator system, means for acquiring structure-borne noise on components of the elevator system, such as on the revolving release rope (4) and / or on the car rails and / or on the propellants.

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