EP3555409B1 - Door having a fall protection mechanism and method for triggering the fall protection mechanism - Google Patents

Door having a fall protection mechanism and method for triggering the fall protection mechanism Download PDF

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Publication number
EP3555409B1
EP3555409B1 EP17835467.6A EP17835467A EP3555409B1 EP 3555409 B1 EP3555409 B1 EP 3555409B1 EP 17835467 A EP17835467 A EP 17835467A EP 3555409 B1 EP3555409 B1 EP 3555409B1
Authority
EP
European Patent Office
Prior art keywords
motor
gate
gate panel
shaft
measuring device
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
EP17835467.6A
Other languages
German (de)
French (fr)
Other versions
EP3555409A1 (en
Inventor
Gabrijel Rejc
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.)
Gabrijel Rejc & Co KG GmbH
Original Assignee
Gabrijel Rejc & Co KG GmbH
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Publication of EP3555409A1 publication Critical patent/EP3555409A1/en
Application granted granted Critical
Publication of EP3555409B1 publication Critical patent/EP3555409B1/en
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
    • E06B9/02—Shutters, movable grilles, or other safety closing devices, e.g. against burglary
    • E06B9/08—Roll-type closures
    • E06B9/11—Roller shutters
    • E06B9/13—Roller shutters with closing members of one piece, e.g. of corrugated sheet metal
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
    • E06B9/02—Shutters, movable grilles, or other safety closing devices, e.g. against burglary
    • E06B9/06—Shutters, movable grilles, or other safety closing devices, e.g. against burglary collapsible or foldable, e.g. of the bellows or lazy-tongs type
    • E06B9/0607—Shutters, movable grilles, or other safety closing devices, e.g. against burglary collapsible or foldable, e.g. of the bellows or lazy-tongs type comprising a plurality of similar rigid closing elements movable to a storage position
    • E06B9/0615—Shutters, movable grilles, or other safety closing devices, e.g. against burglary collapsible or foldable, e.g. of the bellows or lazy-tongs type comprising a plurality of similar rigid closing elements movable to a storage position characterised by the closing elements
    • E06B9/0638—Slats or panels
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
    • E06B9/56—Operating, guiding or securing devices or arrangements for roll-type closures; Spring drums; Tape drums; Counterweighting arrangements therefor
    • E06B9/68—Operating devices or mechanisms, e.g. with electric drive
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
    • E06B9/56—Operating, guiding or securing devices or arrangements for roll-type closures; Spring drums; Tape drums; Counterweighting arrangements therefor
    • E06B9/80—Safety measures against dropping or unauthorised opening; Braking or immobilising devices; Devices for limiting unrolling
    • E06B9/82—Safety measures against dropping or unauthorised opening; Braking or immobilising devices; Devices for limiting unrolling automatic
    • E06B9/84—Safety measures against dropping or unauthorised opening; Braking or immobilising devices; Devices for limiting unrolling automatic against dropping
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
    • E06B9/02—Shutters, movable grilles, or other safety closing devices, e.g. against burglary
    • E06B9/06—Shutters, movable grilles, or other safety closing devices, e.g. against burglary collapsible or foldable, e.g. of the bellows or lazy-tongs type
    • E06B9/0607—Shutters, movable grilles, or other safety closing devices, e.g. against burglary collapsible or foldable, e.g. of the bellows or lazy-tongs type comprising a plurality of similar rigid closing elements movable to a storage position
    • E06B9/0646—Shutters, movable grilles, or other safety closing devices, e.g. against burglary collapsible or foldable, e.g. of the bellows or lazy-tongs type comprising a plurality of similar rigid closing elements movable to a storage position characterised by the relative arrangement of the closing elements in the stored position
    • E06B2009/0684—Shutters, movable grilles, or other safety closing devices, e.g. against burglary collapsible or foldable, e.g. of the bellows or lazy-tongs type comprising a plurality of similar rigid closing elements movable to a storage position characterised by the relative arrangement of the closing elements in the stored position stored in a spiral like arrangement
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
    • E06B9/56—Operating, guiding or securing devices or arrangements for roll-type closures; Spring drums; Tape drums; Counterweighting arrangements therefor
    • E06B9/68—Operating devices or mechanisms, e.g. with electric drive
    • E06B2009/6809—Control
    • E06B2009/6818—Control using sensors
    • E06B2009/6845—Control using sensors sensing position

Definitions

  • the present invention relates to a gate with a fall protection according to the preamble of claim 1.
  • Such gates are suitable, among other things, for industrial use, for closing off production facilities, workshops and warehouses. For example, they are designed to mitigate air movement and help maintain temperatures in cooled or heated areas.
  • Typical designs for doors with vertically movable door leaves are sectional doors, roller doors and spiral doors.
  • Gates of this type can have gate leaves which are divided into sections that can be moved relative to one another, which are guided laterally in the gate frames and are opened or closed in a vertical movement.
  • Gates with vertically movable gate leaves can be designed with or without weight compensation.
  • Known counterbalancing systems include springs which are tensioned when the gate is closed and relax again when the gate is opened, the energy stored in the spring assisting the opening of the gate and thus allowing the gate to be moved with less effort. Gates without a counterweight reduce the production costs and the susceptibility to wear.
  • Doors in industrial applications are often powered by electric motors;
  • the motor is typically connected to the door leaf via a gearbox, with worm gears in particular, but also spur gears, chain or belt drives being used.
  • a parallel direction of development is aimed at increasing the service life, with modern doors being able to complete up to 50,000 or more opening and closing cycles without failure.
  • Friction occurs, such as the motor, the door leaf drive, the gear and the connections between the gear and motor or door leaf drive.
  • a failure such as a material break in one of these door components, can cause the door leaf to fall. This poses great danger to objects and, above all, people who are in the area of the door opening when they fall.
  • Known fall protection devices include mechanisms for detecting a door leaf fall and subsequent triggering of a fall blocking device.
  • the GM 74 26 752 discloses a fall protection for a generic roller shutter.
  • Said roller door essentially consists of movably interconnected slats which, when the door is opened, are wound up on a winding shaft attached in the area of the door lintel.
  • the rotating winding shaft is connected to an electric motor by means of a worm gear.
  • a fall protection system is triggered, which has two locking bolts attached to the bottom door section. These locking bolts, which are pretensioned during operation, are driven outwards into correspondingly shaped openings in the door frame when the fall protection is triggered, and the door is suddenly braked.
  • the fall protection is triggered by means of a tachometer, which determines the speed of the winding shaft. Before the door is operated, a speed limit is defined, above which safe operation of the door cannot be guaranteed and a crash must be assumed. If the said limit speed is exceeded, the fall protection is triggered. In relation to the limit speed, the speed of the winding shaft is the monitoring variable that can be used to detect a malfunction. Errors in the gate that do not lead to an excessive increase in speed or, for example, to uncontrolled lowering of the gate at low speed, do not trigger the fall protection.
  • Another fall protection for a gate is in the EP 1 882 802 A2 described.
  • a control device processes the current setpoint value, direction of rotation and driving speed available internally and compares these with the actual value supplied by a position transmitter.
  • Another function monitoring for a roller shutter is in the EP 0 808 985 A2 described.
  • a sensor is provided there.
  • a scanning device is used to measure the thickness of a layer, for example the thickness of an ice sheet on the goal.
  • Other designs of gates are the JP 2007 177430 A and US2014/332172 described.
  • the U.S. 5,551,535 A a door leaf drive, with a shaft driven by a motor, which a door leaf can move up and down. This gate has a fall arrest device.
  • a measuring device monitors the rpm/speed of rotation of the shaft and the rpm/speed of rotation of the motor.
  • the invention is based on the object of proposing a generic door with a fall protection and a method for triggering a fall protection which reliably detects a falling of the door leaf and just as reliably triggers a braking device which brakes the door quickly and thereby avoids damage to the door.
  • a door with the features of claim 1 is specified.
  • a method with the features of claim 11 is specified. Further advantageous developments are defined in the dependent claims.
  • the coupling of the door leaf drive and the motor results in a defined relationship between the positions and movements of the door leaf, door leaf drive and motor that is determined by the design. Depending on the embodiment, this ratio can be given, for example, by the transmission ratio of a gear between the motor and the door leaf drive, or generally by the type of coupling of the motor and the door leaf drive.
  • the movement parameters of the door leaf can be determined from the movement parameters of the motor using this defined ratio, and vice versa. If said movement parameters of the motor and door leaf are outside of this fixed relationship, a malfunction, such as the door falling, is assumed.
  • the movement parameters of the door leaf and the motor are determined by the first and second measuring device and the measured values are evaluated in a comparator in which the design-related normal relationship of the movement parameters is stored.
  • the braking device is triggered if the ratio of the measured movement parameters is outside the defined ratio.
  • the second measuring device measures at least one movement component of the motor on the motor. From this, the current operating status of the motor can be determined and a sensible assessment of the operating status of the entire door can be made.
  • the measured data can be evaluated quickly in order to initiate automatic braking of the gate in the event of a fault.
  • a high level of safety is achieved with reliable triggering of the braking device in the event of faults.
  • the anti-fall device is also triggered if the door leaf falls at a speed that is the same as or slower than the closing speed of the door in normal operation, i.e. slowly but uncontrollably sinks down. Furthermore, it is possible to stop the falling door leaf very soon after the start of the uncontrolled downward movement, favorably before it reaches a high rate of fall and accordingly requires large braking forces.
  • a movement parameter of the door leaf determined by the first measuring device can be a translation speed of the door leaf. If the door falls, it is primarily indicated by the door leaf falling, i.e. a very rapid downward movement. By measuring the speed of the door leaf, a crash can be very reliably detected.
  • a movement parameter of the door leaf determined by the first measuring device can be an angular position of the rotating door leaf drive.
  • the angular position can be determined conveniently and in a space-saving manner close to the door leaf drive and independently of the current rotation speed of the door leaf drive, which depends on the operating status.
  • a movement parameter of the motor determined by the second measuring device can favorably be a rotational speed of a rotating motor shaft.
  • the speed of the motor shaft can be conveniently determined directly in the vicinity of the motor
  • a movement parameter of the motor determined by the second measuring device can conceivably be an angular position of a rotating motor shaft.
  • the angular position of the motor shaft can also be measured close to the motor to save space.
  • the braking device has a friction brake.
  • a friction brake allows the braking force to be deliberately dosed in order to achieve controlled deceleration of the door leaf. This allows the braking distance and the forces resulting from the negative acceleration, which act on the door leaf and the other components of the door, to be influenced.
  • a braking element of the friction brake frictionally engages a braking surface rotating with the door leaf shaft when the braking device is actuated. Due to the frictional engagement, the door leaf is decelerated depending on the surfaces rubbing against each other and the force acting between the braking element and the braking surface.
  • the one on the door leaf shaft applied brake can be placed in the area of the door leaf shaft to save space and independently of the extension of the door leaf when closed.
  • the motor can be suitable for being controlled until the motor stops, with the door leaf being able to be held in one position, and with the motor being able to be designed in particular as a synchronous motor.
  • Synchronous motors in particular are suitable for providing a high torque even at low speeds or when the motor shaft is stationary, in order to decelerate the door leaf or keep it stationary.
  • the braking device can possibly stop a closing movement of the door leaf within a defined braking distance. This allows the forces occurring throughout the gate during deceleration to be limited to avoid damage to the gate, while the gate leaf is braked quickly enough to prevent damage and injury to objects and people in the gate area.
  • At least one drive wheel formed on the door leaf drive can act on at least one drive means extending in a vertical direction of the door. This achieves good coupling between the door leaf drive and the door leaf and ensures reliable movement of the door leaf, particularly at high movement speeds.
  • the door leaf can be stored in an open position in a kind of spiral guide. This allows the door leaf to be stored in a particularly space-saving manner while the door is open.
  • the object according to the invention is also achieved by a method having the features of claim 11.
  • the measured movement parameters of the motor and the door leaf are compared in the comparator. Due to the construction of the door, these movement parameters are in a defined relationship to each other in all normal operating states of the door, so that a Deviation from this relationship indicates damage to the door and the risk of the door leaf falling. If such a deviation outside of specified tolerances is detected in the comparator during the comparison of the previously measured movement parameters, a braking device is triggered in order to prevent the door leaf from falling and to decelerate the door.
  • This error determination can be carried out reliably in all operating states.
  • the door can be braked at speeds below the normal speed of the door leaf, for example at the start of the falling movement or when the door is slowly but uncontrolled lowering.
  • a translation speed of the door leaf can be advantageously determined by means of the first measuring device. As a result, a falling of the door, which is accompanied by a downward movement of the door leaf at an uncontrolled speed of the door leaf, can be detected directly on the door leaf and thus very reliably.
  • an angular position of the door leaf drive can be determined by means of the first measuring device.
  • the angular position of the door leaf drive can be determined directly on the door leaf drive and by means of a space-saving arrangement of the second measuring device.
  • a speed of a rotating motor shaft of the motor can be determined by means of the second measuring device.
  • the speed lends itself well to the movement of the engine and can be measured relatively easily directly on the engine.
  • the angular position of a rotating motor shaft of the motor can be determined by means of the second measuring device. Regardless of the speed of rotation, the current orientation of the rotating motor shaft can be conveniently determined directly in the vicinity of the motor.
  • the opening and/or closing of the gate can be delayed by means of a friction brake.
  • This enables the braking force to be metered, by means of which the door leaf can be decelerated in such a way that danger to people and objects in the area of the door is kept low and at the same time damage to the door due to high braking forces and abrupt braking is avoided.
  • a braking element can be brought into frictional engagement with a braking surface rotating with the door leaf drive.
  • the braking element can be designed to save space in the area of the door leaf drive and can achieve a controlled braking effect by means of the frictional connection.
  • the braking device may be able to stop the closing movement of the door within a defined braking distance. By defining the braking distance, it can be ensured that the gate is stopped quickly enough to ensure safety for people and objects in the area of the gate in the event of a fall, and at the same time the deceleration can be limited to avoid damage to the gate due to sudden braking.
  • the following embodiments relate primarily to high-speed doors, ie doors whose door leaves reach vertical speeds of more than 1.5 m/s, 2 m/s and in particular in the range from 2 to 4 m/s.
  • figure 1 1 is a schematic plan view of a partially open door, approximately one-third open.
  • the door leaf 10 extends between two door frames 11, in which it is guided laterally.
  • Above the door opening in the area of the door lintel 12 is a door leaf shaft 5, which is part of a door leaf drive and extends approximately over the entire width of the door.
  • the door leaf is formed from mutually movable parallel aligned sections. At its opposite horizontal ends, the door leaf is connected to a drive chain, which extends inside one of the door frames.
  • a gear wheel which is rigidly connected to the door drive shaft 5, engages in each of the drive chains.
  • rotation of the door leaf shaft 5 causes the door leaf to be raised and lowered.
  • the door leaf is guided past the door leaf shaft into a spiral-shaped rail in which the door leaf is stored when open.
  • the door is designed as a roller door with a flexible door leaf, which is wound onto the door leaf shaft.
  • the door leaf drive with the door leaf shaft 5 is connected to an electric motor 3 via a gear 4, the connection between the motor and the door leaf shaft 5 being realized by means of a chain drive.
  • Alternative embodiments can also be equipped with belts, spur, bevel or worm drives or can do without a gear.
  • the motor shaft can be directly connected to the door leaf shaft without a gear.
  • a holding brake 2 is implemented on the motor, which brakes the motor and also the door leaf through the coupling of motor and door leaf drive in normal operation and can hold it in one position.
  • the goal has no counterbalance.
  • tension or compression springs for example, can be designed in the frames or in the lintel to compensate for the weight.
  • the door described therein has a sectional door leaf which, when open, is mounted in a spiral, gear wheels engaging in drive chains running on both sides of the door leaf.
  • the motor is coupled to a drive shaft of the door leaf via a belt.
  • a second measuring device 1 which measures a rotational speed of the motor shaft of the electric motor 3 , is also implemented on the motor.
  • RPM measurement methods known from the prior art are used here, for example by means of induction transmitters or light barriers.
  • speed measurement methods provide digital information on the distance covered by the motor shaft in the form of square-wave signals, which are counted in control units.
  • the angular position can be represented by the measuring device in the form of phase-shifted sine/cosine functions.
  • the measuring device is a rotary feedback system that outputs both the angular position via sine/cosine periods and the absolute number of revolutions as digital information.
  • the measuring device can be used for the commutation of the motor at the same time.
  • the absolute position is output as digital information with a specific resolution. The resolution should be as high as possible in order to achieve short reaction times and braking distances.
  • a first measuring device 6 is implemented on the door leaf shaft 5, which also measures the speed of the door leaf shaft 5 by means of known speed measuring methods.
  • the first measuring device is a sensor system that outputs pulses that are phase-shifted relative to one another on two signal coils.
  • the measured values of the first and second measuring device are transmitted to a comparator 9 via lines 13 , 14 .
  • the measurement can be transmitted via analog voltage values or in digital form if the first and second measuring device can already convert the measured speed values into digital signals. As a rule, digital information transmission is preferred.
  • the comparator can be designed as an electronic component. Alternatively, the comparator can also be implemented as a digital component or by software.
  • the speed can be deduced from the changes in the position values of the two measuring devices with reference to the elapsed time.
  • the speed and position of the door leaf can be determined.
  • the measured values are transmitted from the frames 11 to the comparator 9 via a line 17 .
  • the first measuring device is a light grid, for example, which is arranged directly in the plane of movement of the door leaf and supplies the comparator 9 with the position of the interrupted light beam when a specific light beam is interrupted.
  • the measured values transmitted by the two measuring devices relating to the speeds of the door leaf shaft and the motor shaft are set in relation to one another. Since the door leaf shaft 5 and the motor shaft 3 are coupled to one another via the gear 4, their speeds must be in a fixed ratio to one another in all operating states. If the comparator determines that the actual ratio between the measured speeds deviates from the ratio determined by the design, decoupling between the door leaf drive and motor 3 is assumed, which can be caused, for example, by a gear failure and, in the worst case, result in the door leaf 10 falling . In this case, the safety brake 7 is immediately triggered by the comparator, in that a braking signal is passed through line 15 to the safety brake 7 .
  • the comparator is designed in such a way that it can read in the absolute position values of the measuring device 6 and, in parallel, can count the pulses arriving from the second measuring device.
  • the phase shift of the incoming signals allows a distinction to be made between subtraction and addition.
  • FIG. 2 shows a second embodiment in a sectional view.
  • a control 19 which can be operated from the outside and in which the motor control and the comparator 9 are also implemented.
  • the lines between the comparator 9 and the measuring devices 1, 6 are routed within the door frames 11 and the lintel 12.
  • the door leaf shaft 5, which lies in the cutting plane, is supported at both ends in the area of the door frames by a roller bearing 20 in each case.
  • the power is transmitted between the motor 3 and the door leaf shaft 5 by means of a chain 21 which is guided on a chain wheel 23 of the motor shaft and a chain wheel 24 of the door leaf shaft 5 .
  • the motor 3 is carried out within the spiral 22 in which the door leaf 10 is stored in the open state.
  • the second measuring device 1 is implemented inside the housing of the motor 3 .
  • the first measuring device 6 is designed on the motor-side end of the door leaf shaft.
  • a mechanical service brake which is used to brake the motor and the door leaf coupled to it during normal operation and to hold them in one position.
  • the safety brake 7 is designed as a spring-loaded disc brake.
  • a brake disk 26 is formed on the door leaf shaft so as to be non-rotatable.
  • Two brake shoes 27 with brake pads attached on both sides of the brake disc are prestressed in the direction of the brake disc 26 by means of spring force and are held at a distance from the brake disc by means of an electromagnet counter to the spring force.
  • the electromagnets are deactivated so that the brake shoes 27 are pressed against the brake disc by the spring force and the door leaf shaft 5 brakes.
  • figure 5 shows the in 2
  • the area marked B is enlarged and shows in particular the connection between the motor 3 and the door leaf shaft 5 via the sprockets 23 and the chain 21.
  • the first measuring device 6 is carried out on the right-hand end of the door leaf shaft 5.
  • the embodiment shown is substantially similar to the second embodiment in FIGS Figures 2 to 5 .
  • the main difference is that the motor shaft and the door leaf shaft 5 are at right angles to one another here.
  • the power is transmitted by means of an angular gear 28 with a bevel gear.
  • the design of a worm gear or the like is also conceivable.
  • the embodiment shown corresponds essentially to the embodiment in FIGS Figures 2 to 5 .
  • the main differences are the use of a synchronous motor 3, which can be regulated down to zero speed and can brake and hold the door leaf during operation.
  • the motor therefore requires no additional mechanical service brake in the motor housing and no transmission gear.
  • the motor shaft is coupled directly to the door leaf shaft 5.
  • This measured value is set in relation to the measurement on the motor shaft in the comparator in order to detect a failure of the gate.
  • the embodiment shown essentially corresponds to the embodiment in FIG 7 . What is different is the arrangement of the motor, which is arranged here as a tubular motor inside the door leaf shaft.

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Power-Operated Mechanisms For Wings (AREA)
  • Operating, Guiding And Securing Of Roll- Type Closing Members (AREA)
  • Braking Arrangements (AREA)
  • Stopping Of Electric Motors (AREA)

Description

Die vorliegende Erfindung betrifft ein Tor mit einer Absturzsicherung gemäß dem Oberbegriff des Anspruches 1.The present invention relates to a gate with a fall protection according to the preamble of claim 1.

Derartige Tore eignen sich unter anderem für die industrielle Anwendung, zum Abschließen von Produktionsstätten, Werk- und Lagerhallen. Sie sollen beispielsweise Luftbewegungen abschwächen und helfen, Temperaturen in gekühlten oder beheizten Bereichen aufrechtzuerhalten. Typische Ausführungsformen für Tore mit vertikal bewegbaren Torblättern sind Sektionaltore, Rolltore und Spiraltore. Derartige Tore können in zueinander bewegliche Abschnitte unterteilte Torblätter aufweisen, welche seitlich in den Torzargen geführt sind und in einer Vertikalbewegung geöffnet bzw. geschlossen werden.Such gates are suitable, among other things, for industrial use, for closing off production facilities, workshops and warehouses. For example, they are designed to mitigate air movement and help maintain temperatures in cooled or heated areas. Typical designs for doors with vertically movable door leaves are sectional doors, roller doors and spiral doors. Gates of this type can have gate leaves which are divided into sections that can be moved relative to one another, which are guided laterally in the gate frames and are opened or closed in a vertical movement.

Tore mit vertikal bewegbaren Torblättern können mit oder ohne Gewichtsausgleich ausgeführt sein. Bekannte Gewichtsausgleichssysteme beinhalten Federn, die beim Schließen des Tores gespannt werden und sich beim Öffnen des Tores wieder entspannen, wobei die in der Feder gespeicherte Energie das Öffnen des Tores unterstützt und es somit erlaubt, das Tor mit geringerem Kraftaufwand zu bewegen. Tore ohne einen Gewichtsausgleich verringern den Produktionsaufwand und die Verschleißanfälligkeit.Gates with vertically movable gate leaves can be designed with or without weight compensation. Known counterbalancing systems include springs which are tensioned when the gate is closed and relax again when the gate is opened, the energy stored in the spring assisting the opening of the gate and thus allowing the gate to be moved with less effort. Gates without a counterweight reduce the production costs and the susceptibility to wear.

Tore in industrieller Anwendung werden oft durch Elektromotoren angetrieben; Der Motor ist typischerweise über ein Getriebe mit dem Torblatt verbunden, wobei vor allem Schneckengetriebe, aber auch Stirnradgetriebe, Ketten- oder Riementriebe zum Einsatz kommen.Doors in industrial applications are often powered by electric motors; The motor is typically connected to the door leaf via a gearbox, with worm gears in particular, but also spur gears, chain or belt drives being used.

Eine Entwicklungsrichtung von gattungsgemäßen Toren betrifft deren Bewegungsgeschwindigkeit. Torblätter moderner Schnelllauftore erreichen typischerweise Bewegungs-Geschwindigkeiten von bis zu 4 m/s.One direction of development of gates of this type relates to their speed of movement. Door leaves of modern high-speed doors typically achieve movement speeds of up to 4 m/s.

Eine parallele Entwicklungsrichtung zielt auf eine Erhöhung der Lebensdauer ab, wobei moderne Tore bis zu 50.000 oder mehr Öffnungs-und Schließzyklen versagensfrei absolvieren können.A parallel direction of development is aimed at increasing the service life, with modern doors being able to complete up to 50,000 or more opening and closing cycles without failure.

Diese Kombination von hohen Bewegungsgeschwindigkeiten/Beschleunigungen und sehr vielen Bewegungszyklen führen zu hoher Materialbeanspruchung und daraus folgender erhöhter Gefahr des Materialversagens aufgrund von Verschleiß. Verschleißanfällig sind vor allem Teile, an denen Reibung auftritt, wie der Motor, der Torblattantrieb, das Getriebe sowie die Anbindungen zwischen Getriebe und Motor bzw. Torblattantrieb. Ein Versagen, wie beispielsweise ein Materialbruch in einer dieser Torkomponenten kann zum Absturz des Torblattes führen. Daraus resultieren große Gefahren für Gegenstände und vor allem Personen, die sich während des Abstürzens im Bereich der Toröffnung befinden.This combination of high movement speeds/accelerations and very many movement cycles lead to high material stress and the resulting increased risk of material failure due to wear. Parts that are particularly susceptible to wear are Friction occurs, such as the motor, the door leaf drive, the gear and the connections between the gear and motor or door leaf drive. A failure, such as a material break in one of these door components, can cause the door leaf to fall. This poses great danger to objects and, above all, people who are in the area of the door opening when they fall.

Um derartige Gefahren zu minimieren können Tore eine wirksame Absturzsicherung aufweisen. Bekannte Absturzsicherungen umfassen Mechanismen zur Feststellung eines Torblattabsturzes und einer anschließenden Auslösung einer Absturzblockierung.In order to minimize such dangers, gates can have effective fall protection. Known fall protection devices include mechanisms for detecting a door leaf fall and subsequent triggering of a fall blocking device.

Die GM 74 26 752 offenbart eine Absturzsicherung für ein gattungsgemäßes Rolltor. Das besagte Rolltor besteht im Wesentlichen aus beweglich miteinander verbundenen Lamellen, die beim Öffnen des Tores auf einer im Bereich des Torsturzes angebrachten Wickelwelle aufgewickelt werden. Die rotierende Wickelwelle ist mittels eines Schneckengetriebes mit einem Elektromotor verbunden. Im Falle eines Bruches des Getriebes wird eine Absturzsicherung ausgelöst, welche zwei an der untersten Torlamelle angebrachte Sperrbolzen aufweist. Diese im Betrieb vorgespannten Sperrbolzen werden nach außen in entsprechend ausgeformte Öffnungen in der Torzarge getrieben, wenn die Absturzsicherung ausgelöst wird und bremsen so das Tor ruckartig ab. Das Auslösen der Absturzsicherung erfolgt mittels eines Drehzahlmessers, welcher die Drehzahl der Wickelwelle bestimmt. Vor Betrieb des Tores wird eine Grenzdrehzahl, oberhalb derer ein sicherer Betrieb des Tores nicht gewährleistet werden kann, sondern von einem Absturz ausgegangen werden muss, definiert. Bei Überschreiten besagter Grenzdrehzahl wird die Absturzsicherung ausgelöst. Die Drehzahl der Wickelwelle ist im Bezug auf die Grenzdrehzahl die Überwachungsgröße, anhand der eine Fehlfunktion nachgewiesen werden kann. Fehler im Tor, die nicht zu einer Überhöhung der Drehzahl führen oder beispielsweise in unkontrolliertes Absinken des Tores mit geringer Geschwindigkeit führen nicht zum Auslösen der Absturzsicherung.The GM 74 26 752 discloses a fall protection for a generic roller shutter. Said roller door essentially consists of movably interconnected slats which, when the door is opened, are wound up on a winding shaft attached in the area of the door lintel. The rotating winding shaft is connected to an electric motor by means of a worm gear. In the event of the gear breaking, a fall protection system is triggered, which has two locking bolts attached to the bottom door section. These locking bolts, which are pretensioned during operation, are driven outwards into correspondingly shaped openings in the door frame when the fall protection is triggered, and the door is suddenly braked. The fall protection is triggered by means of a tachometer, which determines the speed of the winding shaft. Before the door is operated, a speed limit is defined, above which safe operation of the door cannot be guaranteed and a crash must be assumed. If the said limit speed is exceeded, the fall protection is triggered. In relation to the limit speed, the speed of the winding shaft is the monitoring variable that can be used to detect a malfunction. Errors in the gate that do not lead to an excessive increase in speed or, for example, to uncontrolled lowering of the gate at low speed, do not trigger the fall protection.

Eine weitere Absturzsicherung für ein Tor ist in der EP 1 882 802 A2 beschrieben. Eine Steuervorrichtung verarbeitet den intern vorliegenden aktuellen Sollwert, Drehrichtung und Fahrgeschwindigkeit und vergleicht diese mit dem Ist-Wert, der von einem Positionsgeber geliefert wird. Eine weitere Funktionsüberwachung für ein Rolltor wird in der EP 0 808 985 A2 beschrieben. Dort ist ein Sensor vorgesehen. Mittels eine Abtastvorrichtung wird die Dicke einer Schicht, zum Beispiel Dicke eines Eispanzers auf dem Tor gemessen. Weitere Ausgestaltungen von Toren sind der JP 2007 177430 A und US 2014/332172 beschrieben. Darüber hinaus offenbart die US 5 551 535 A einen Torblattantrieb, mit einem von einem Motor angetriebenen Welle, welche ein Torblatt auf und ab bewegen kann. Dieses Tor weist eine Absturzbremse auf. Eine Messeinrichtung überwacht die Drehzahl/Drehgeschwindigkeit der Welle sowie die Drehzahl/Drehgeschwindigkeit des Motors.Another fall protection for a gate is in the EP 1 882 802 A2 described. A control device processes the current setpoint value, direction of rotation and driving speed available internally and compares these with the actual value supplied by a position transmitter. Another function monitoring for a roller shutter is in the EP 0 808 985 A2 described. A sensor is provided there. A scanning device is used to measure the thickness of a layer, for example the thickness of an ice sheet on the goal. Other designs of gates are the JP 2007 177430 A and US2014/332172 described. In addition, the U.S. 5,551,535 A a door leaf drive, with a shaft driven by a motor, which a door leaf can move up and down. This gate has a fall arrest device. A measuring device monitors the rpm/speed of rotation of the shaft and the rpm/speed of rotation of the motor.

Der Erfindung liegt die Aufgabe zugrunde, ein gattungsgemäßes Tor mit einer Absturzsicherung sowie ein Verfahren zum Auslösen einer Absturzsicherung vorzuschlagen, welche zuverlässig ein Abstürzen des Torblattes feststellt, und ebenso zuverlässig eine Bremseinrichtung auslöst, welche das Tor schnell bremst und dabei Schäden am Tor vermeidet.The invention is based on the object of proposing a generic door with a fall protection and a method for triggering a fall protection which reliably detects a falling of the door leaf and just as reliably triggers a braking device which brakes the door quickly and thereby avoids damage to the door.

Zur Lösung des vorgenannten Problems wird ein Tor mit den Merkmalen von Anspruch 1 angegeben. Darüber hinaus wird ein Verfahren mit den Merkmalen von Anspruch 11 angegeben. Weitere vorteilhafte Weiterbildungen sind in den Unteransprüchen definiert.Die Kopplung von Torblattantrieb und Motor führt zu einem durch die Konstruktion bedingten, definierten Verhältnis der Positionen und Bewegungen des Torblattes, Torblattantriebes und Motors. Abhängig von der Ausführungsform kann dieses Verhältnis beispielsweise durch das Übersetzungsverhältnis eines Getriebes zwischen Motor und Torblattantrieb, beziehungsweise allgemein die Art der Kopplung von Motor und Torblattantrieb gegeben sein. Aus dem Bewegungsparameter des Motors lassen sich im Normalbetrieb des Tores die Bewegungsparameter des Torblattes anhand dieses definierten Verhältnisses bestimmen, und umgekehrt. Falls besagte Bewegungsparameter von Motor und Torblatt außerhalb dieses festen Verhältnisses stehen, wird von einer Fehlfunktion, wie beispielsweise einem Abstürzen, des Tores ausgegangen.To solve the above problem, a door with the features of claim 1 is specified. In addition, a method with the features of claim 11 is specified. Further advantageous developments are defined in the dependent claims. The coupling of the door leaf drive and the motor results in a defined relationship between the positions and movements of the door leaf, door leaf drive and motor that is determined by the design. Depending on the embodiment, this ratio can be given, for example, by the transmission ratio of a gear between the motor and the door leaf drive, or generally by the type of coupling of the motor and the door leaf drive. During normal operation of the door, the movement parameters of the door leaf can be determined from the movement parameters of the motor using this defined ratio, and vice versa. If said movement parameters of the motor and door leaf are outside of this fixed relationship, a malfunction, such as the door falling, is assumed.

Erfindungsgemäß werden die Bewegungsparameter des Torblattes und des Motors durch die erste und zweite Messeinrichtung bestimmt und die Messwerte in einem Komparator, in dem das konstruktiv bedingte Normalverhältnis der Bewegungsparameter hinterlegt ist, ausgewertet. Die Bremseinrichtung wird ausgelöst, falls das Verhältnis der gemessenen Bewegungsparameter außerhalb des definierten Verhältnisses liegt.According to the invention, the movement parameters of the door leaf and the motor are determined by the first and second measuring device and the measured values are evaluated in a comparator in which the design-related normal relationship of the movement parameters is stored. The braking device is triggered if the ratio of the measured movement parameters is outside the defined ratio.

Die zweite Messeinrichtung misst am Motor wenigstens eine Bewegungskomponente des Motors. Daraus lässt sich der momentane Betriebszustand des Motors bestimmen und eine sinnvolle Einschätzung des Betriebszustandes des gesamten Tores treffen.The second measuring device measures at least one movement component of the motor on the motor. From this, the current operating status of the motor can be determined and a sensible assessment of the operating status of the entire door can be made.

Durch den Einsatz eines Komparators können die gemessenen Daten schnell ausgewertet werden, um im Störungsfall automatisiert eine Bremsung des Tores einzuleiten.By using a comparator, the measured data can be evaluated quickly in order to initiate automatic braking of the gate in the event of a fault.

Es wird eine hohe Sicherheit bei zuverlässiger Auslösung der Bremseinrichtung im Falle von Störungen erreicht. Die Absturzsicherung wird auch ausgelöst, falls das Torblatt mit einer Bewegungsgeschwindigkeit abstürzt die gleich oder geringer ist als die Schließgeschwindigkeit des Tores im Normalbetrieb, also langsam aber unkontrolliert niedersinkt. Weiterhin ist möglich, das fallende Torblatt sehr bald nach Beginn der unkontrollierten Abwärtsbewegung zu stoppen, günstigerweise noch bevor es eine hohe Fallgeschwindigkeit erreicht und dementsprechend große Bremskräfte erfordert.A high level of safety is achieved with reliable triggering of the braking device in the event of faults. The anti-fall device is also triggered if the door leaf falls at a speed that is the same as or slower than the closing speed of the door in normal operation, i.e. slowly but uncontrollably sinks down. Furthermore, it is possible to stop the falling door leaf very soon after the start of the uncontrolled downward movement, favorably before it reaches a high rate of fall and accordingly requires large braking forces.

Gemäß einer Ausführungsform kann ein durch die erste Messeinrichtung bestimmter Bewegungsparameter des Torblattes eine Translationsgeschwindigkeit des Torblattes sein. Ein Abstürzen des Tores äußert sich primär durch ein Fallen, also eine sehr schnelle Abwärtsbewegung, des Torblattes. Durch die Messung der Geschwindigkeit des Torblattes ist ein Abstürzen dementsprechend sehr zuverlässig nachweisbar.According to one embodiment, a movement parameter of the door leaf determined by the first measuring device can be a translation speed of the door leaf. If the door falls, it is primarily indicated by the door leaf falling, i.e. a very rapid downward movement. By measuring the speed of the door leaf, a crash can be very reliably detected.

In einer Fortbildung kann ein durch die erste Messeinrichtung bestimmter Bewegungsparameter des Torblattes eine Winkelposition des rotierenden Torblattantriebes sein. Die Winkelposition lässt sich günstig und platzsparend nah am Torblattantrieb und unabhängig von der aktuellen sowie vom Betriebszustand abhängigen Rotationsgeschwindigkeit des Torblattantriebes bestimmen.In a further development, a movement parameter of the door leaf determined by the first measuring device can be an angular position of the rotating door leaf drive. The angular position can be determined conveniently and in a space-saving manner close to the door leaf drive and independently of the current rotation speed of the door leaf drive, which depends on the operating status.

Günstigerweise kann ein durch die zweite Messeinrichtung bestimmter Bewegungsparameter des Motors eine Drehzahl einer rotierenden Motorwelle sein. Die Drehzahl der Motorwelle lässt sich günstig direkt in der Nähe des Motors bestimmen
Denkbar kann ein durch die zweite Messeinrichtung bestimmter Bewegungsparameter des Motors eine Winkelposition einer rotierenden Motorwelle sein. Als Alternative oder zusätzlich zur Bestimmung der Motorwellendrehzahl kann auch die Winkelposition der Motorwelle platzsparend in der Nähe des Motors gemessen werden.A movement parameter of the motor determined by the second measuring device can favorably be a rotational speed of a rotating motor shaft. The speed of the motor shaft can be conveniently determined directly in the vicinity of the motor
A movement parameter of the motor determined by the second measuring device can conceivably be an angular position of a rotating motor shaft. As an alternative or in addition to determining the motor shaft speed, the angular position of the motor shaft can also be measured close to the motor to save space.

Die Bremseinrichtung weist eine Reibbremse auf. Eine Reibbremse erlaubt eine bewusste Dosierung der Bremskraft um eine kontrollierte Verzögerung des Torblattes zu erzielen. Dies erlaubt eine Beeinflussung des Bremsweges und der aus der negativen Beschleunigung resultierenden Kräfte, welche auf das Torblatt und die anderen Komponenten des Tores wirken.The braking device has a friction brake. A friction brake allows the braking force to be deliberately dosed in order to achieve controlled deceleration of the door leaf. This allows the braking distance and the forces resulting from the negative acceleration, which act on the door leaf and the other components of the door, to be influenced.

Gemäß der Erfindung ist ein Bremselement der Reibbremse reibend mit einer mit der Torblattwelle rotierenden Bremsoberfläche in Eingriff, wenn die Bremseinrichtung ausgelöst wird. Durch den reibenden Eingriff wird das Torblatt abhängig von den aneinander reibenden Oberflächen und der zwischen Bremselement und Bremsoberfläche wirkenden Kraft verzögert. Die an der Torblattwelle angreifende Bremse kann platzsparend im Bereich der Torblattwelle und unabhängig von der Erstreckung des Torblattes im geschlossenen Zustand platziert werden.According to the invention, a braking element of the friction brake frictionally engages a braking surface rotating with the door leaf shaft when the braking device is actuated. Due to the frictional engagement, the door leaf is decelerated depending on the surfaces rubbing against each other and the force acting between the braking element and the braking surface. The one on the door leaf shaft applied brake can be placed in the area of the door leaf shaft to save space and independently of the extension of the door leaf when closed.

In einer möglichen Umsetzung der Erfindung kann der Motor geeignet sein, bis zum Stillstand des Motors geregelt zu werden, wobei das Torblatt in einer Position gehalten werden kann, und wobei der Motor insbesondere als Synchronmotor ausgeführt sein kann. Dadurch ist im Normalbetrieb des Tores ein zuverlässiges Bremsen und Halten des Tores möglich. Gleichzeitig kann der beim Bremsen auftretende Verschleiß im System verringert werden. Insbesondere Synchronmotoren sind geeignet, auch bei geringen Drehzahlen, bzw. bei unbewegter Motorwelle ein hohes Drehmoment bereitzustellen um das Torblatt zu verzögern oder unbewegt zu halten.In a possible implementation of the invention, the motor can be suitable for being controlled until the motor stops, with the door leaf being able to be held in one position, and with the motor being able to be designed in particular as a synchronous motor. As a result, reliable braking and stopping of the door is possible during normal door operation. At the same time, the wear in the system that occurs during braking can be reduced. Synchronous motors in particular are suitable for providing a high torque even at low speeds or when the motor shaft is stationary, in order to decelerate the door leaf or keep it stationary.

Möglicherweise kann die Bremseinrichtung eine Schließbewegung des Torblattes innerhalb eines definierten Bremsweges stoppen. Dadurch können die während der Verzögerung im gesamten Tor auftretenden Kräfte begrenzt werden um Beschädigungen am Tor zu vermeiden, während das Torblatt schnell genug gebremst wird, um Beschädigungen und Verletzungen von Gegenständen und Personen im Torbereich zu verhindern.The braking device can possibly stop a closing movement of the door leaf within a defined braking distance. This allows the forces occurring throughout the gate during deceleration to be limited to avoid damage to the gate, while the gate leaf is braked quickly enough to prevent damage and injury to objects and people in the gate area.

In einer Ausgestaltungsform der Erfindung kann wenigstens ein an dem Torblattantrieb ausgebildetes Antriebsrad an wenigstens ein, sich in einer Höhenrichtung des Tores erstreckendes, Antriebsmittel angreifen. Dadurch wird eine gute Kopplung zwischen Torblattantrieb und Torblatt erreicht und eine zuverlässige Bewegung des Torblattes, insbesondere bei hohen Bewegungsgeschwindigkeiten, gewährleistet.In one embodiment of the invention, at least one drive wheel formed on the door leaf drive can act on at least one drive means extending in a vertical direction of the door. This achieves good coupling between the door leaf drive and the door leaf and ensures reliable movement of the door leaf, particularly at high movement speeds.

Gemäß einer Ausführungsvariante kann das Torblatt in einer offenen Position in einer Art Spiralführung bevorratet sein. Dadurch kann das Torblatt besonders platzsparend aufbewahrt werden, während des Tor geöffnet ist.According to one embodiment variant, the door leaf can be stored in an open position in a kind of spiral guide. This allows the door leaf to be stored in a particularly space-saving manner while the door is open.

Die erfindungsgemäße Aufgabe wird außerdem gelöst durch ein Verfahren mit den Merkmalen des Anspruches 11.The object according to the invention is also achieved by a method having the features of claim 11.

Die gemessenen Bewegungsparameter des Motors und des Torblattes werden im Komparator abgeglichen. Durch die Konstruktion des Tores stehen diese Bewegungsparameter in allen normalen Betriebszuständen des Tores in einem definierten Verhältnis zueinander, sodass eine Abweichung von diesem Verhältnis auf eine Beschädigung des Tores und die Gefahr eines Abstürzens des Torblattes hinweist. Wenn im Komparator während des Vergleiches der zuvor gemessenen Bewegungsparameter also eine solche Abweichung außerhalb von festgelegten Toleranzen festgestellt wird, wird eine Bremseinrichtung ausgelöst um das Abstürzen des Torblattes zu verhindern und das Tor zu verzögern.The measured movement parameters of the motor and the door leaf are compared in the comparator. Due to the construction of the door, these movement parameters are in a defined relationship to each other in all normal operating states of the door, so that a Deviation from this relationship indicates damage to the door and the risk of the door leaf falling. If such a deviation outside of specified tolerances is detected in the comparator during the comparison of the previously measured movement parameters, a braking device is triggered in order to prevent the door leaf from falling and to decelerate the door.

Diese Fehlerbestimmung kann in allen Betriebszuständen zuverlässig ausgeführt werden. Das Bremsen des Tores kann insbesondere bereits bei Geschwindigkeiten unterhalb der normalen Geschwindigkeit des Torblatts erfolgen, etwa zu Beginn der Absturzbewegung oder bei einem langsamen aber unkontrollierten Absinken des Tores.This error determination can be carried out reliably in all operating states. In particular, the door can be braked at speeds below the normal speed of the door leaf, for example at the start of the falling movement or when the door is slowly but uncontrolled lowering.

Günstigerweise kann mittels der ersten Messeinrichtung eine Translationsgeschwindigkeit des Torblattes bestimmt werden. Dadurch kann ein Abstürzen des Tores, welches mit einer Abwärtsbewegung des Torblattes mit unkontrollierter Geschwindigkeit des Torblattes einhergeht, direkt am Torblatt und somit sehr zuverlässig ermittelt werden.A translation speed of the door leaf can be advantageously determined by means of the first measuring device. As a result, a falling of the door, which is accompanied by a downward movement of the door leaf at an uncontrolled speed of the door leaf, can be detected directly on the door leaf and thus very reliably.

In einer Variante kann mittels der ersten Messeinrichtung eine Winkelposition des Torblattantriebes bestimmt werden. Die Bestimmung der Winkelposition des Torblattantriebes kann direkt an dem Torblattantrieb erfolgen und mittels einer platzsparenden Anordnung der zweiten Messeinrichtung erfolgen.In a variant, an angular position of the door leaf drive can be determined by means of the first measuring device. The angular position of the door leaf drive can be determined directly on the door leaf drive and by means of a space-saving arrangement of the second measuring device.

Gemäß einer Ausbildung kann mittels der zweiten Messeinrichtung eine Drehzahl einer rotierenden Motorwelle des Motors bestimmt werden. Die Drehzahl eignet sich gut, um die Bewegung des Motors zu charakterisieren und kann relativ einfach direkt am Motor gemessen werden.According to one embodiment, a speed of a rotating motor shaft of the motor can be determined by means of the second measuring device. The speed lends itself well to the movement of the engine and can be measured relatively easily directly on the engine.

In einer Fortbildung der Erfindung kann mittels der zweiten Messeinrichtung die Winkelposition einer rotierenden Motorwelle des Motors bestimmt werden. Unabhängig von der Drehgeschwindigkeit kann die momentane Ausrichtung der rotierenden Motorwelle günstig direkt in der Nähe des Motors ermittelt werden.In a development of the invention, the angular position of a rotating motor shaft of the motor can be determined by means of the second measuring device. Regardless of the speed of rotation, the current orientation of the rotating motor shaft can be conveniently determined directly in the vicinity of the motor.

Günstigerweise kann das Öffnen und/oder Schließen des Tores mittels einer Reibbremse verzögert werden. Dadurch wird eine Dosierung der Bremskraft ermöglicht, mittels derer das Torblatt so verzögert werden kann, dass Gefahren für Personen und Gegenstände im Bereich des Tores gering gehalten werden und gleichzeitig Beschädigungen am Tor durch hohe Bremskräfte und abruptes Abbremsen vermieden werden.Favorably, the opening and/or closing of the gate can be delayed by means of a friction brake. This enables the braking force to be metered, by means of which the door leaf can be decelerated in such a way that danger to people and objects in the area of the door is kept low and at the same time damage to the door due to high braking forces and abrupt braking is avoided.

In einer Gestaltungsform kann durch das Auslösen der Bremseinrichtung ein Bremselement reibend mit einer mit dem Torblattantrieb rotierenden Bremsoberfläche in Eingriff gebracht werden. Das Bremselement kann platzsparend im Bereich des Torblattantriebes ausgebildet sein und mittels des Reibschlusses eine dosierte Bremswirkung erzielen.In one embodiment, by triggering the braking device, a braking element can be brought into frictional engagement with a braking surface rotating with the door leaf drive. The braking element can be designed to save space in the area of the door leaf drive and can achieve a controlled braking effect by means of the frictional connection.

Möglicherweise kann die Bremseinrichtung die Schließbewegung des Tores innerhalb eines definierten Bremsweges stoppen. Durch die Definition des Bremsweges kann sichergestellt werden, dass das Tor einerseits schnell genug gestoppt wird um im Falle eines Absturzes Sicherheit für Personen und Gegenstände im Bereich des Tores zu gewährleisten und gleichzeitig kann die Verzögerung begrenzt werden um Beschädigungen am Tor durch ruckartiges Bremsen zu vermeiden.The braking device may be able to stop the closing movement of the door within a defined braking distance. By defining the braking distance, it can be ensured that the gate is stopped quickly enough to ensure safety for people and objects in the area of the gate in the event of a fall, and at the same time the deceleration can be limited to avoid damage to the gate due to sudden braking.

Im Folgenden sollen anhand der Zeichnungen einige beispielhafte Ausführungsformen der Erfindung erläutert werden. Es zeigen:

  • Fig. 1 eine Prinzipskizze eines erfindungsgemäßen Tores mit einer Absturzsicherung,
  • Fig. 2 eine Schnittansicht einer zweiten Ausführungsform der Erfindung in Durchfahrtsrichtung,
  • Fig. 3 eine Seitenansicht der Ausführungsform in Fig. 2 von rechts,
  • Fig. 4 eine Vergrößerung des Bereiches A in Fig. 2,
  • Fig. 5 eine Vergrößerung des Bereiches B in Fig. 2,
  • Fig. 6 eine Schnittansicht einer dritten Ausführungsform,
  • Fig. 7 eine Schnittansicht einer vierten Ausführungsform,
  • Fig. 8 eine Schnittansicht einer fünften Ausführungsform.
Some exemplary embodiments of the invention are to be explained below with reference to the drawings. Show it:
  • 1 a schematic diagram of a gate according to the invention with a fall protection,
  • 2 a sectional view of a second embodiment of the invention in the direction of passage,
  • 3 a side view of the embodiment in FIG 2 from the right,
  • 4 an enlargement of the area A in 2 ,
  • figure 5 an enlargement of the area B in 2 ,
  • 6 a sectional view of a third embodiment,
  • 7 a sectional view of a fourth embodiment,
  • 8 a sectional view of a fifth embodiment.

Für gleiche oder sich entsprechende Merkmale werden in den verschiedenen Figuren und im Bezug auf verschiedene Ausführungsformen identische Bezugszeichen verwendet. Auf eine Erläuterung von entsprechenden oder gleichen Merkmalen wird in Bezug auf folgende Figuren verzichtet, wenn sie bereits erläutert wurden.Identical reference symbols are used in the various figures and in relation to various embodiments for the same or corresponding features. Corresponding or identical features are not explained in relation to the following figures if they have already been explained.

Die folgenden Ausführungsformen beziehen sich vor allem auf schnelllaufende Tore, also Tore deren Torblätter Vertikalgeschwindigkeiten von mehr als 1,5 m/s, 2 m/s und insbesondere im Bereich von 2 bis 4 m/s erreichen.The following embodiments relate primarily to high-speed doors, ie doors whose door leaves reach vertical speeds of more than 1.5 m/s, 2 m/s and in particular in the range from 2 to 4 m/s.

In Figur 1 ist eine Draufsicht auf ein zum Teil geöffnetes Tor schematisch, zu etwa einem Drittel geöffnet, dargestellt. Das Torblatt 10 erstreckt sich zwischen zwei Torzargen 11, in denen es seitlich geführt ist. Oberhalb der Toröffnung im Bereich des Torsturzes 12 ist eine Torblattwelle 5, welche zu einem Torblattantrieb gehört ausgebildet und erstreckt sich etwa über die gesamte Breite des Tores.In figure 1 1 is a schematic plan view of a partially open door, approximately one-third open. The door leaf 10 extends between two door frames 11, in which it is guided laterally. Above the door opening in the area of the door lintel 12 is a door leaf shaft 5, which is part of a door leaf drive and extends approximately over the entire width of the door.

Das Torblatt ist aus zueinander beweglichen parallel ausgerichteten Sektionen ausgebildet. An seinen gegenüberliegenden horizontalen Enden ist das Torblatt jeweils mit einer Antriebskette verbunden, welche sich innerhalb einer der Torzargen erstreckt. In jede der Antriebsketten greift jeweils ein Zahnrad ein, welches starr mit der Torantriebswelle 5 verbunden ist. Dadurch führt eine Rotation der Torblattwelle 5 zum Heben und Senken des Torblattes. Das Torblatt wird an der Torblattwelle vorbei in eine spiralförmige Schiene geführt, in der das Torblatt im geöffneten Zustand gelagert wird. In alternativen Ausführungsformen ist das Tor als Rolltor mit einem flexiblen Torblatt, welches auf der Torblattwelle aufgewickelt wird, ausgeführt.The door leaf is formed from mutually movable parallel aligned sections. At its opposite horizontal ends, the door leaf is connected to a drive chain, which extends inside one of the door frames. A gear wheel, which is rigidly connected to the door drive shaft 5, engages in each of the drive chains. As a result, rotation of the door leaf shaft 5 causes the door leaf to be raised and lowered. The door leaf is guided past the door leaf shaft into a spiral-shaped rail in which the door leaf is stored when open. In alternative embodiments, the door is designed as a roller door with a flexible door leaf, which is wound onto the door leaf shaft.

Der Torblattantrieb mit der Torblattwelle 5 ist über ein Getriebe 4 mit einem Elektromotor 3 verbunden, wobei die Anbindung zwischen dem Motor und der Torblattwelle 5 mittels eines Kettentriebes realisiert ist. Alternative Ausführungsformen können auch mit Riemen, Stirn-, Kegeloder Schneckentrieben ausgestattet sein oder auf ein Getriebe verzichten. Beispielsweise kann die Motorwelle getriebelos direkt an die Torblattwelle angebunden sein. Am Motor ist eine Haltebremse 2 ausgeführt, welche den Motor und durch die Kopplung von Motor und Torblattantrieb ebenfalls das Torblatt im Normalbetrieb bremst und in einer Position halten kann. Das Tor weist keinen Gewichtsausgleich auf. In alternativen Ausführungsformen können als Gewichtsausgleich beispielsweise Zug- oder Druckfedern in den Zargen oder im Torsturz ausgebildet sein.The door leaf drive with the door leaf shaft 5 is connected to an electric motor 3 via a gear 4, the connection between the motor and the door leaf shaft 5 being realized by means of a chain drive. Alternative embodiments can also be equipped with belts, spur, bevel or worm drives or can do without a gear. For example, the motor shaft can be directly connected to the door leaf shaft without a gear. A holding brake 2 is implemented on the motor, which brakes the motor and also the door leaf through the coupling of motor and door leaf drive in normal operation and can hold it in one position. The goal has no counterbalance. In alternative embodiments, tension or compression springs, for example, can be designed in the frames or in the lintel to compensate for the weight.

Ein Beispiel für die konstruktive Gestaltung eines Tores, das erfindungsgemäß mit einer Absturzsicherung ausgestattet sein kann, wird in der EP 16 176 550.8 offenbart. Das darin beschrieben Tor weist ein sektionales Torblatt auf, welches im geöffneten Zustand in einer Spirale gelagert ist, wobei Zahnräder in beidseitig des Torblattes ausgeführte Antriebsketten eingreifen. Die Kopplung des Motors mit einer Antriebswelle des Torblattes erfolgt über einen Riemen.An example of the structural design of a gate that can be equipped according to the invention with a fall protection is in EP 16 176 550.8 disclosed. The door described therein has a sectional door leaf which, when open, is mounted in a spiral, gear wheels engaging in drive chains running on both sides of the door leaf. The motor is coupled to a drive shaft of the door leaf via a belt.

Ebenfalls am Motor ist eine zweite Messeinrichtung 1 ausgeführt, welche eine Rotationsgeschwindigkeit der Motorwelle des Elektromotors 3 misst. Zum Einsatz kommen hierbei aus dem Stand der Technik bekannte Drehzahlmessverfahren, beispielsweise mittels Induktionsgebern oder Lichtschranken.A second measuring device 1 , which measures a rotational speed of the motor shaft of the electric motor 3 , is also implemented on the motor. RPM measurement methods known from the prior art are used here, for example by means of induction transmitters or light barriers.

Diese Drehzahlmessverfahren liefern digitale Informationen zum zurückgelegten Weg der Motorwelle in Form von Rechtecksignalen, welche in Steuerungseinheiten gezählt werden. Alternativ kann durch die Messeinrichtung die Winkelposition in Form von phasenverschobenen Sinus-/Cosinusfunktionen dargestellt werden.These speed measurement methods provide digital information on the distance covered by the motor shaft in the form of square-wave signals, which are counted in control units. Alternatively, the angular position can be represented by the measuring device in the form of phase-shifted sine/cosine functions.

In der gezeigten Ausführung ist die Messeinrichtung ein rotatives Feedbacksystem, das sowohl die Winkelposition über Sinus-/Cosinusperioden, als auch die absolute Anzahl der Umdrehungen als digitale Information ausgibt. In dieser Ausführung kann die Messeinrichtung gleichzeitig für die Kommutierung des Motors verwendet werden. Die absolute Position wird als digitale Information mit einer bestimmten Auflösung ausgegeben. Die Auflösung sollte möglichst hoch gewählt werden, um kurze Reaktionszeiten und Bremswege zu erzielen.In the embodiment shown, the measuring device is a rotary feedback system that outputs both the angular position via sine/cosine periods and the absolute number of revolutions as digital information. In this version, the measuring device can be used for the commutation of the motor at the same time. The absolute position is output as digital information with a specific resolution. The resolution should be as high as possible in order to achieve short reaction times and braking distances.

An der Torblattwelle 5 ist eine erste Messeinrichtung 6 ausgeführt, welche ebenfalls mittels bekannter Drehzahlmessverfahren die Drehzahl der Torblattwelle 5 misst.A first measuring device 6 is implemented on the door leaf shaft 5, which also measures the speed of the door leaf shaft 5 by means of known speed measuring methods.

In der gezeigten Ausführungsform ist die erste Messeinrichtung ein Sensorsystem, das auf zwei Signalspulen gegeneinander phasenverschobene Impulse ausgibt.In the embodiment shown, the first measuring device is a sensor system that outputs pulses that are phase-shifted relative to one another on two signal coils.

Die Messwerte der ersten und zweiten Messeinrichtung werden über Leitungen 13, 14 zu einem Komparator 9 übertragen. Die Messübertragung kann über analoge Spannungswerte oder in digitaler Form erfolgen, wenn die erste und zweite Messeinrichtung die gemessenen Drehzahlwerte bereits in digitale Signale umwandeln können. In der Regel wird eine digitale Informationsübermittlung bevorzugt. Der Komparator kann als elektronisches Bauteil ausgeführt sein. Alternativ kann der Komparator auch als digitales Bauteil oder per Software realisiert werden.The measured values of the first and second measuring device are transmitted to a comparator 9 via lines 13 , 14 . The measurement can be transmitted via analog voltage values or in digital form if the first and second measuring device can already convert the measured speed values into digital signals. As a rule, digital information transmission is preferred. The comparator can be designed as an electronic component. Alternatively, the comparator can also be implemented as a digital component or by software.

Aus den Änderungen der Positionswerte der beiden Messeinrichtungen kann unter Bezugnahme der verstrichenen Zeit auf die Geschwindigkeit geschlossen werden.The speed can be deduced from the changes in the position values of the two measuring devices with reference to the elapsed time.

Alternativ oder zusätzlich zur Messung der Drehzahl der Torblattwelle 5, kann deren Winkelposition oder, mithilfe von Lichtschranken in den Zargen 11, die Geschwindigkeit und Position des Torblattes ermittelt werden. Die Messwerte werden von den Zargen 11 durch eine Leitung 17 zum Komparator 9 übertragen.As an alternative or in addition to measuring the rotational speed of the door leaf shaft 5, its angular position or, using light barriers in the frames 11, the speed and position of the door leaf can be determined. The measured values are transmitted from the frames 11 to the comparator 9 via a line 17 .

In derartigen Ausführungen ist die erste Messeinrichtung beispielsweise ein Lichtgitter, das unmittelbar in der Bewegungsebene des Torblattes angeordnet ist und bei Unterbrechung eines bestimmten Lichtstrahls die Position des unterbrochenen Lichtstrahls an den Komparator 9 liefert.In such designs, the first measuring device is a light grid, for example, which is arranged directly in the plane of movement of the door leaf and supplies the comparator 9 with the position of the interrupted light beam when a specific light beam is interrupted.

Im Komparator 9 werden die von den beiden Messeinrichtungen übertragenen Messwerte zu den Drehzahlen der Torblattwelle und der Motorwelle ins Verhältnis zueinander gesetzt. Da die Torblattwelle 5 und die Motorwelle 3 über das Getriebe 4 miteinander gekoppelt sind, müssen deren Drehzahlen in allen Betriebszuständen in einem festen Verhältnis zueinander stehen. Wenn im Komparator festgestellt wird, dass das tatsächliche Verhältnis zwischen den gemessenen Drehzahlen von dem konstruktiv bedingten Verhältnis abweicht, wird von einer Entkopplung zwischen Torblattantrieb und Motor 3 ausgegangen, welcher beispielsweise durch ein Getriebeversagen hervorgerufen werden kann und schlimmstenfalls ein Abstürzen des Torblattes 10 zur Folge hat. In diesem Fall wird durch den Komparator sofort die Auffangbremse 7 ausgelöst, indem ein Bremssignal durch Leitung 15 an die Auffangbremse 7 geleitet wird.In the comparator 9, the measured values transmitted by the two measuring devices relating to the speeds of the door leaf shaft and the motor shaft are set in relation to one another. Since the door leaf shaft 5 and the motor shaft 3 are coupled to one another via the gear 4, their speeds must be in a fixed ratio to one another in all operating states. If the comparator determines that the actual ratio between the measured speeds deviates from the ratio determined by the design, decoupling between the door leaf drive and motor 3 is assumed, which can be caused, for example, by a gear failure and, in the worst case, result in the door leaf 10 falling . In this case, the safety brake 7 is immediately triggered by the comparator, in that a braking signal is passed through line 15 to the safety brake 7 .

In der dargestellten Ausführungsform ist der Komparator so ausgeführt, dass er die absoluten Positionswerte der Messeinrichtung 6 einlesen kann und parallel die von der zweiten Messeinrichtung ankommenden Impulse zählen kann. Durch die Phasenverschiebung der ankommenden Signale kann zwischen einer Subtraktion und Addition unterschieden werden.In the embodiment shown, the comparator is designed in such a way that it can read in the absolute position values of the measuring device 6 and, in parallel, can count the pulses arriving from the second measuring device. The phase shift of the incoming signals allows a distinction to be made between subtraction and addition.

Durch die Wahl unterschiedlicher Wegmessverfahren kann eine diversitäre und sichere Redundanz gewährleistet werden. Während des Betriebes des Tores werden permanent die Bewegungsparameter des Motors und des Torblattes bestimmt und im Komparator ausgewertet.Diverse and secure redundancy can be guaranteed by choosing different displacement measurement methods. During operation of the gate, the movement parameters of the motor and the gate leaf are constantly determined and evaluated in the comparator.

Fig. 2 zeigt ein zweites Ausführungsbeispiel in einer Schnittdarstellung. Rechts vom Torblatt 10 ist in einer Torzarge 11 eine von außen zu bedienende Steuerung 19 vorgesehen, in der ebenfalls die Motorsteuerung und der Komparator 9 ausgeführt sind. Die Leitungen zwischen dem Komparator 9 und den Messeinrichtungen 1, 6 sind innerhalb der Torzargen 11 und dem Torsturz 12 geführt. Die Torblattwelle 5, welche in der Schnittebene liegt, ist an beiden Enden im Bereich der Torzargen durch jeweils ein Wälzlager 20 gestützt. 2 shows a second embodiment in a sectional view. To the right of the door leaf 10 in a door frame 11 there is a control 19 which can be operated from the outside and in which the motor control and the comparator 9 are also implemented. The lines between the comparator 9 and the measuring devices 1, 6 are routed within the door frames 11 and the lintel 12. The door leaf shaft 5, which lies in the cutting plane, is supported at both ends in the area of the door frames by a roller bearing 20 in each case.

Die Leistungsübertragung zwischen Motor 3 und Torblattwelle 5 erfolgt mittels einer Kette 21, die auf jeweils einem Kettenrad 23 der Motorwelle und einem Kettenrad 24 der Torblattwelle 5 geführt ist.The power is transmitted between the motor 3 and the door leaf shaft 5 by means of a chain 21 which is guided on a chain wheel 23 of the motor shaft and a chain wheel 24 of the door leaf shaft 5 .

Der Motor 3 ist innerhalb der Spirale 22 ausgeführt, in der das Torblatt 10 im geöffneten Zustand gelagert wird.The motor 3 is carried out within the spiral 22 in which the door leaf 10 is stored in the open state.

Die zweite Messeinrichtung 1 ist innerhalb des Gehäuses des Motors 3 ausgeführt. Die erste Messeinrichtung 6 ist auf an dem motorseitigen Ende der Torblattwelle ausgeführt. Ebenfalls innerhalb des Motorgehäuses ist eine mechanische Betriebsbremse ausgeführt, welche genutzt wird um den Motor sowie das daran gekoppelte Torblatt im Normalbetrieb abzubremsen und in einer Position zu halten.The second measuring device 1 is implemented inside the housing of the motor 3 . The first measuring device 6 is designed on the motor-side end of the door leaf shaft. Also inside the motor housing is a mechanical service brake, which is used to brake the motor and the door leaf coupled to it during normal operation and to hold them in one position.

An beiden Enden der Torblattwelle 5 sind Antriebsräder 25 ausgeführt, welche in eine Antriebskette des Torblattes angreifen und so die Rotation der Antriebswelle 5 in eine Linearbewegung des Torblattes umsetzen.At both ends of the door leaf shaft 5 there are drive wheels 25 which act on a drive chain of the door leaf and thus convert the rotation of the drive shaft 5 into a linear movement of the door leaf.

Fig. 3 zeigt das in Fig. 2 dargestellte Tor von rechts. Gut sichtbar ist die Anordnung der Spirale 22 im Torsturz 12 und die platzsparende Anordnung des Motors 3 innerhalb der Spirale 22. Die Kette 21 wird seitlich an der Spirale vorbeigeführt um Leistung vom Motor 3 über das Kettenrad 24 an die Torblattwelle 5 zu übertragen. 3 shows that in 2 gate shown from the right. The arrangement of the spiral 22 in the door lintel 12 and the space-saving arrangement of the motor 3 within the spiral 22 are clearly visible.

Fig. 4 zeigt den in Fig. 2 mit A gekennzeichneten Bereich vergrößert. Dabei ist besonders die Auffangbremse 7 am linken Ende der Torblattwelle 5 gut zu erkennen. 4 shows the in 2 Area marked A enlarged. The safety brake 7 at the left end of the door leaf shaft 5 is particularly easy to see.

Die Auffangbremse 7 ist als Federkraft-Scheibenbremse ausgeführt. Im Ausführungsbeispiel ist rotationsfest an der Torblattwelle eine Bremsscheibe 26 ausgebildet. Zwei beidseitig der Bremsscheibe angebrachte Bremsbacken 27 mit Bremsbelägen sind mittels Federkraft in Richtung der Bremsscheibe 26 vorgespannt und mittels eines Elektromagneten entgegen der Federkraft von der Bremsscheibe beabstandet gehalten. Zur Auslösung der Auffangbremse 7 werden die Elektromagneten deaktiviert, sodass die Bremsbacken 27 durch die Federkraft gegen die Bremsscheibe gedrückt werden und die Torblattwelle 5 bremsen. Diese Anordnung hat den weiteren Vorteil, dass sie auch im Falle eines Stromausfalles automatisch aktiviert wird und die Bremse auslöst.The safety brake 7 is designed as a spring-loaded disc brake. In the exemplary embodiment, a brake disk 26 is formed on the door leaf shaft so as to be non-rotatable. Two brake shoes 27 with brake pads attached on both sides of the brake disc are prestressed in the direction of the brake disc 26 by means of spring force and are held at a distance from the brake disc by means of an electromagnet counter to the spring force. To trigger the safety brake 7, the electromagnets are deactivated so that the brake shoes 27 are pressed against the brake disc by the spring force and the door leaf shaft 5 brakes. This arrangement has the further advantage that it is automatically activated and the brake is triggered even in the event of a power failure.

Fig. 5 zeigt den in Fig. 2 mit B gekennzeichneten Bereich vergrößert und zeigt insbesondere die Anbindung zwischen Motor 3 und Torblattwelle 5 über die Kettenräder 23, und die Kette 21. Die erste Messeinrichtung 6 ist an dem rechten Ende Torblattwelle 5 ausgeführt. figure 5 shows the in 2 The area marked B is enlarged and shows in particular the connection between the motor 3 and the door leaf shaft 5 via the sprockets 23 and the chain 21. The first measuring device 6 is carried out on the right-hand end of the door leaf shaft 5.

Die in Fig. 6 gezeigte Ausführungsform ähnelt wesentlich der zweiten Ausführungsform in den Figuren 2 bis 5. Der wesentliche Unterschied ist, dass die Motorwelle und die Torblattwelle 5 hier in einem rechten Winkel aufeinander stehen. Die Leistungsübertragung erfolgt mittels eines Winkelgetriebes 28 mit Kegelstirnrad. Alternativ ist auch die Ausführung eines Schneckengetriebes oder dergleichen denkbar.In the 6 The embodiment shown is substantially similar to the second embodiment in FIGS Figures 2 to 5 . The main difference is that the motor shaft and the door leaf shaft 5 are at right angles to one another here. The power is transmitted by means of an angular gear 28 with a bevel gear. Alternatively, the design of a worm gear or the like is also conceivable.

Die in Fig. 7 gezeigte Ausführungsform entspricht wesentlich der Ausführungsform in den Figuren 2 bis 5. Wesentliche Unterschiede sind die Verwendung eines Synchronmotors 3, der bis zur Drehzahl Null herunter regelbar ist und dabei das Torblatt im Betrieb bremsen und halten kann. Der Motor benötigt daher keine zusätzliche mechanische Betriebsbremse im Motorgehäuse und kein Übersetzungsgetriebe. Die Motorwelle ist direkt mit der Torblattwelle 5 gekoppelt.In the 7 The embodiment shown corresponds essentially to the embodiment in FIGS Figures 2 to 5 . The main differences are the use of a synchronous motor 3, which can be regulated down to zero speed and can brake and hold the door leaf during operation. The motor therefore requires no additional mechanical service brake in the motor housing and no transmission gear. The motor shaft is coupled directly to the door leaf shaft 5.

Ein potentieller Absturz des Torblattes mittels einer Messstrecke 29, an der mittels einer Lichtschrankenanordnung bevorzugt mittels eines Lichtgitters, das horizontal gelagerte Lichtschranken ausbildet die vertikal übereinander angeordnet sind, die Positionen und/oder Bewegungsgeschwindigkeit des Torblattes ermittelt wird. Dieser Messwert wird im Komparator mit der Messung an der Motorwelle ins Verhältnis gesetzt um ein Versagen des Tores zu detektieren.A potential fall of the door leaf by means of a measuring section 29, on which the positions and/or movement speed of the door leaf is determined by means of a light barrier arrangement, preferably by means of a light grid that forms horizontally mounted light barriers that are arranged vertically one above the other. This measured value is set in relation to the measurement on the motor shaft in the comparator in order to detect a failure of the gate.

Die in Fig. 8 dargestellte Ausführungsform entspricht im Wesentlichen der Ausführungsform in Fig. 7. Unterscheidend ist die Anordnung des Motors, der hier als Rohrmotor innerhalb der Torblattwelle angeordnet ist.In the 8 The embodiment shown essentially corresponds to the embodiment in FIG 7 . What is different is the arrangement of the motor, which is arranged here as a tubular motor inside the door leaf shaft.

Claims (17)

  1. Gate with a crash-down prevention mechanism, comprising
    a gate panel (10) which can be opened and closed by the rotation of a gate panel drive (5), which has a gate panel shaft,
    a motor (3) which is coupled to the gate panel drive (5) and
    a braking assembly (7) by means of which the opening and/or closing of the gate panel (10) can be decelerated, and
    a first measuring device (6) for determining at least one movement parameter of the gate panel (10),
    a second measuring device (1) for determining at least one movement parameter of the motor (3), and
    a comparator (9) which compares the measured movement parameters of the gate panel (10) and of the motor (3) and triggers the braking device (7) if the measured movement parameters of the gate panel (10) and of the motor (3) are outside a defined relationship to each other,
    wherein the braking device (7) comprises a friction brake, wherein
    a braking element of the friction brake is in frictional engagement with a braking surface of a disk brake (26) which rotates together with the gate panel shaft when the braking device (7) is released,
    characterized in that
    the second measuring device (1) is provided on the motor (3),
    the first measuring device (6) is formed on the gate panel shaft and on the motor-side end of the gate panel shaft,
    wherein the braking device (7) is provided at the opposite end side of the gate panel shaft opposite to the motor-side end of the gate panel shaft.
  2. Gate according to claim 1, wherein a movement parameter of the gate panel (10) determined by the first measuring device (6) is a translation speed of the gate panel (10).
  3. Gate according to one of the previous claims, wherein a movement parameter of the gate panel (10) determined by the first measuring device (6) is an angular position of the gate panel drive (5).
  4. Gate according to one of the previous claims, wherein a movement parameter of the motor (3) determined by the second measuring device (1) is a rotational speed of a rotating motor shaft.
  5. Gate according to one of the previous claims, wherein a movement parameter of the motor (3) determined by the second measuring device (1) is an angular position of a rotating motor shaft.
  6. Gate according to one of the previous claims, wherein the motor is adapted to be controlled until the motor stops, wherein the gate panel can be held in a position, and wherein the motor is designed in particular as a synchronous motor.
  7. Gate according to one of the previous claims, wherein the braking device (7) can stop a closing movement of the gate panel within a defined braking distance.
  8. Gate according to one of the previous claims, wherein at least one drive wheel formed on the gate panel drive engages at least one drive means extending in a height direction of the gate.
  9. Gate according to one of the previous claims, wherein the gate is stored in an open position in a kind of spiral guide.
  10. Method for triggering a crash-down prevention of a gate with a gate panel (10), which can be opened and closed by the rotation of a gate panel drive (5), which has a gate panel shaft, wherein
    at least one movement parameter of the gate panel (10) is determined by means of a first measuring device (6),
    at least one movement parameter of the motor (3) is determined by means of a second measuring device (1),
    the measured movement parameters of the gate panel (10) and of the motor (3) are compared by means of a comparator (9),
    and, if the movement parameters of the motor (3) and of the gate panel (10) are outside a defined relationship, a braking device (7) is triggered, which decelerates the opening and/or closing of the gate,
    wherein the braking device (7) comprises a friction brake, wherein
    a braking element of the friction brake is in frictional engagement with a braking surface of a disk brake (26) which rotates together with the door blade shaft when the braking device (7) is released,
    characterized in that
    the second measuring device (1) is provided on the motor (3),
    the first measuring device (6) is formed on the gate panel shaft and on the motor-side end of the gate panel shaft,
    the braking device (7) is provided at the opposite end side of the gate panel shaft opposite to the motor side end of the gate panel shaft.
  11. Method according to claim 10, wherein a translation speed of the gate panel (10) is determined by means of the first measuring device (6).
  12. Method according to one of claims 10 and 11, wherein an angular position of the gate panel drive (5) is determined by means of the first measuring device (6).
  13. Method according to one of claims 10 to 12, wherein a rotational speed of a rotating motor shaft of the motor (3) is determined by means of the second measuring device (1).
  14. Method according to one of claims 10 to 13, wherein the angular position of a rotating motor shaft of the motor (3) is determined by means of the second measuring device (1).
  15. Method according to one of claims 10 to 14, wherein the opening and/or closing of the gate is delayed by means of a friction brake.
  16. Method according to one of claims 10 to 15, wherein a braking element is brought into frictional engagement with a braking surface rotating with the door leaf drive by the triggering of the braking device (7).
  17. Method according to one of claims 10 to 16, wherein the braking device (7) stops the closing movement of the door within a defined braking distance.
EP17835467.6A 2016-12-15 2017-12-15 Door having a fall protection mechanism and method for triggering the fall protection mechanism Active EP3555409B1 (en)

Applications Claiming Priority (2)

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DE102016225079.5A DE102016225079A1 (en) 2016-12-15 2016-12-15 Gate with a fall protection
PCT/EP2017/083109 WO2018109191A1 (en) 2016-12-15 2017-12-15 Door having a fall protection mechanism and method for triggering the fall protection mechanism

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EP3555409A1 EP3555409A1 (en) 2019-10-23
EP3555409B1 true EP3555409B1 (en) 2023-02-22

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EP (1) EP3555409B1 (en)
JP (1) JP7021220B2 (en)
CN (1) CN110337525A (en)
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DE (1) DE102016225079A1 (en)
EA (1) EA036915B1 (en)
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WO2021148492A1 (en) * 2020-01-22 2021-07-29 Assa Abloy Entrance Systems Ab Method of arranging an overhead sectional door
DE102022122154A1 (en) 2022-09-01 2024-03-07 Novoferm Tormatic Gmbh Goal
CN116446777B (en) * 2023-04-28 2024-08-30 东莞市歌声美实业有限公司 Automatic and manual double-mode rolling shutter door

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