EP4204656A1 - Safety system for a drive, which has a circulating traction mechanism, of a gate, in particular a lifting gate, more particularly a high-speed lifting gate, and gate comprising said safety system - Google Patents
Safety system for a drive, which has a circulating traction mechanism, of a gate, in particular a lifting gate, more particularly a high-speed lifting gate, and gate comprising said safety systemInfo
- Publication number
- EP4204656A1 EP4204656A1 EP21770170.5A EP21770170A EP4204656A1 EP 4204656 A1 EP4204656 A1 EP 4204656A1 EP 21770170 A EP21770170 A EP 21770170A EP 4204656 A1 EP4204656 A1 EP 4204656A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- gate
- safety system
- door
- blocking
- drive
- 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.)
- Granted
Links
- 230000000903 blocking effect Effects 0.000 claims abstract description 90
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 13
- 238000004804 winding Methods 0.000 claims description 13
- 238000005381 potential energy Methods 0.000 claims description 12
- 230000001360 synchronised effect Effects 0.000 claims description 12
- 230000005484 gravity Effects 0.000 description 13
- 238000013461 design Methods 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 4
- 230000036316 preload Effects 0.000 description 4
- 230000001960 triggered effect Effects 0.000 description 4
- 230000001133 acceleration Effects 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 230000001419 dependent effect Effects 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000035484 reaction time Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
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- 238000007665 sagging Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
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
- E06B9/56—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
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05D—HINGES OR SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS
- E05D13/00—Accessories for sliding or lifting wings, e.g. pulleys, safety catches
- E05D13/003—Anti-dropping devices
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05F15/00—Power-operated mechanisms for wings
- E05F15/60—Power-operated mechanisms for wings using electrical actuators
- E05F15/603—Power-operated mechanisms for wings using electrical actuators using rotary electromotors
- E05F15/665—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for vertically-sliding wings
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
- E05Y2201/00—Constructional elements; Accessories therefor
- E05Y2201/40—Motors; Magnets; Springs; Weights; Accessories therefor
- E05Y2201/47—Springs
- E05Y2201/484—Torsion springs
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
- E05Y2201/00—Constructional elements; Accessories therefor
- E05Y2201/60—Suspension or transmission members; Accessories therefor
- E05Y2201/622—Suspension or transmission members elements
- E05Y2201/658—Members cooperating with flexible elongated pulling elements
- E05Y2201/672—Tensioners, tension sensors
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
- E05Y2201/00—Constructional elements; Accessories therefor
- E05Y2201/60—Suspension or transmission members; Accessories therefor
- E05Y2201/622—Suspension or transmission members elements
- E05Y2201/71—Toothed gearing
- E05Y2201/712—Toothed gearing with incomplete toothing
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
- E05Y2400/00—Electronic control; Electrical power; Power supply; Power or signal transmission; User interfaces
- E05Y2400/10—Electronic control
- E05Y2400/44—Sensors not directly associated with the wing movement
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
- E05Y2800/00—Details, accessories and auxiliary operations not otherwise provided for
- E05Y2800/40—Physical or chemical protection
- E05Y2800/404—Physical or chemical protection against component faults or failure
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
- E05Y2900/00—Application of doors, windows, wings or fittings thereof
- E05Y2900/10—Application of doors, windows, wings or fittings thereof for buildings or parts thereof
- E05Y2900/106—Application of doors, windows, wings or fittings thereof for buildings or parts thereof for garages
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
- E05Y2900/00—Application of doors, windows, wings or fittings thereof
- E05Y2900/40—Application of doors, windows, wings or fittings thereof for gates
Definitions
- Safety system for a drive of a gate in particular a lifting gate, more particularly a high-speed lifting gate, and gate having the safety system, having a revolving traction mechanism
- the invention relates to a safety system for a door drive having a revolving traction mechanism, in particular a lifting door, more particularly a high-speed lifting door according to the preamble of claim 1 and a door having the safety system.
- a generic safety system is known from CN 2 373 548 Y and DE 16 59 481 A.
- DE 102017 102614 A1 discloses a device for detecting a door leaf falling and a system for detecting a door leaf falling.
- the relevant device uses a door leaf falling detection device which is provided on the door leaf and has means for detecting an acceleration of a door leaf falling detection device.
- a communication unit sends a crash notification signal if a crash is positively detected, for example when a detected acceleration value exceeds an upper limit.
- suitable braking means can then be actuated by means of such a fall detection device, which ensures that the door leaf is stopped.
- DE 20 2012 001 954 U1 discloses a drive arrangement for roller doors which has a catch device, the drive arrangement comprising an endlessly revolving transmission means. Furthermore, this drive device includes a drive motor, which directly drives a so-called safety gear. This safety gear contains a safety gear. From the output shaft this Safety gear, which acts as a drive shaft for the transmission drive, transmission means lead to corresponding driven wheels on a winding shaft.
- centrifugally actuated safety gears are known in which a rotating element is coupled to a door drive shaft, for example.
- Locking bodies are driven in rotation together with this rotary element, which are displaced outwards due to centrifugal force when a certain speed is exceeded and, for example, enter locking pockets, whereby further rotation of the rotor shaft is prevented by means of the locking bodies.
- JP 2008-38 499 A discloses a traction means tensioning device which is easy to assemble.
- the object of the invention is to specify a safety system for a drive of a door, in particular a lifting door, which has a peripheral traction mechanism, which can detect a breakage/tearing of the peripheral traction mechanism in a particularly simple and reliable manner and, if this is detected, reliably and particularly easily for a blockage of a driven wheel, in particular a gate curtain of a lift gate.
- the safety system should be able to react quickly in order to keep an uncontrolled further lowering of the gate curtain of the gate, in particular the lifting gate, to a minimum in the event of a breakage/tearing of the circulating traction mechanism and to ensure an “immediate or almost immediate” blocking of the gate curtain.
- the safety system according to the invention should be independent of an external energy supply and should itself work reliably, in particular automatically and reliably.
- the object of the invention is to specify a door, in particular a lifting door, which is equipped with the safety system.
- a safety system is a safety system for a drive of a door, in particular a lifting door, more particularly a high-speed lifting door, having a revolving traction means, with a drive wheel and a driven wheel, wherein a drive torque can be transmitted from the drive wheel to the driven wheel by means of the traction means
- the safety system also includes a blocking member which, in a normal operating position in which the traction means is intact, is disengaged from the driven wheel and is held in the normal position in a pretensioned manner by means of a prestressing device and a holding device, the holding device being designed and set up in such a way that it is at least in the event of a tearing of the traction mechanism, the blocking member is released and the prestressing device shifts the blocking member from the normal position into a blocking position in which at least the driven wheel is blocked.
- Such a safety system is developed in such a way that the holding device is provided on a motor bracket of a drive motor, which is held in a prestressed operating position by the traction mechanism.
- the present safety system according to the invention for gates, in particular lifting gates can be used particularly expediently for an indirectly driven synchronous shaft/winding shaft of such a gate, in particular lifting gates, with such a drive being particularly space-saving, but having a peripheral traction mechanism which has a certain probability of failure (breakage/tearing ) is inherent.
- the present invention is particularly suitable for monitoring such a traction means, which is designed in particular as a toothed belt, chain or V-belt.
- the safety system according to the invention is advantageously usable as an alternative or in addition to other braking and safety devices on a gate, in particular a lifting gate.
- the driven wheel is automatically, immediately and automatically blocked in at least one of the two possible directions of rotation, in order to prevent a fall, e.g. B. a gate curtain or a gate curtain of the gate, especially lifting gate to avoid.
- a fast reaction time of the safety system is particularly advantageous, so that an unintentional acceleration of a gate curtain or gate curtain does not occur or occurs only to a significant extent during a time until the driven wheel is blocked. As a result, the blocking forces or braking forces remain low.
- the safety system according to the invention is independent of external electrical, hydraulic or pneumatic energy sources and thus a particularly high level of operational safety is ensured.
- a motor bracket for the drive motor of the drive is provided as the attachment location for the holding device, which bracket can usually be displaced or pivoted within limits relative to the frame, for example to enable retensioning of the traction means.
- the displacement path or the pivoting range of the motor bracket can be expediently designed in such a way that the motor bracket moves a piece, for example due to gravity is shifted or pivoted, so that the holding device releases the holding section of the blocking member and the safety system is triggered due to the tearing of the traction means and the resulting displacement of an engine bracket.
- the blocking member has a blocking element which interacts with the driven wheel in a form-fit blocking manner in the blocking position.
- a form-fitting engagement of the blocking element with the output gear enables a particularly secure blocking that is independent of, for example, environmental conditions, which in contrast to this, for example in the case of a frictional blocking, could influence a coefficient of friction between the blocking partners acting there and thus a purely frictional blocking would be less reliable.
- the blocking element is a toothed segment with a toothed wheel radius that increases counter to a direction of engagement, which meshes with a corresponding toothed section of the driven wheel in the event of blocking.
- Such a design of the blocking element as a toothed segment with a gear wheel radius that increases in a direction of engagement causes a self-reinforcing blocking.
- the prestressing device or the prestressing of the blocking element only has to be designed and constructed by such a measure that the prestressing results in an engagement of the toothed segment and a corresponding toothed section of the output gear. Once this intervention has taken place, the blocking or the further reinforced toothing acts automatically, in that a torque is transmitted from the output gear to the toothed segment.
- the prestressing device is a lever arm pivoted in the vertical direction relative to the lowest possible zero position, so that its prestressing takes place in the form of potential energy, and/or is a spring.
- the prestressing of the blocking member is realized in that the lever arm is pivoted about a pivot axis from its lowest possible position, which causes the center of gravity of the lever arm or a boom weight of a different design has a higher potential energy compared to its lowest point and, due to the force of gravity, tends towards the lowest possible potential energy level in the event of release.
- the corresponding preload is therefore solely due to the gravitational force and does not require any additional components.
- the prestressing device can be supplemented by a spring or formed alone.
- Such a spring can, for example, be designed as a tension spring or as a torsion spring which, starting from the prestressed normal position, supports or alone causes a movement of the blocking element towards the blocking position or at least until the blocking element engages with the output gear.
- a suitably selected and set up e.g. B. built-in compression spring.
- the holding device is a pedestal, which releases a holding section of the prestressing device in the event of tearing.
- the above measure represents a simple way of maintaining a pretension of the blocking element.
- the holding device is a pedestal, which occupies different positions in space depending on the presence or absence of the traction means, with the position of the pedestal being such that there is a holding section of the pretensioning device, i.e. for example the lever arm, in a pretensioned position holds position.
- the motor bracket can be automatically displaced by means of a pretension, in particular can be pivoted with respect to a drive frame and the motor bracket thereby releases the holding section.
- Pivoting displaceability of the motor bracket has proven to be particularly expedient, since, in contrast to linear displaceability, there is less friction or smaller surfaces between a motor bracket and a connecting component move relative to one another and thus reliable pivoting of the motor bracket due to gravity can be guaranteed more reliably than in the case of linear displacement.
- the motor bracket can be pretensioned by means of a spring device in relation to the drive frame in order to pretension it.
- the above-mentioned displaceability of the motor bracket for the purpose of releasing the holding section of the blocking member can be supported by a spring device or can be ensured solely by a spring device.
- a spring device in particular when, for example, in an installation position of the drive, a pivotability that is determined in terms of direction by gravity, z. B. is not possible for reasons of space.
- it can be expedient to position the motor bracket in relation to a lowest zero position of the motor bracket in order to prestress the motor bracket in such a way that it has an increased potential energy.
- This gravity-related preload can be achieved by the swiveling motor bracket together with the drive motor having a center of mass during normal operation of the safety system, which is higher than a mechanically possible lowest position, whereby the preload is due to gravity he follows.
- the blocking member preferably interacts with the output wheel in a blocking manner only in one direction of rotation of the latter.
- the blocking member is at least partially arranged in its blocking position in a normal path of the intact traction means.
- the driven wheel is coupled to a winding shaft or a synchronous shaft of the door, in particular the lifting door, and that Security system is set up and designed in such a way that falling of a gate curtain or gate curtain is thereby blocked.
- the safety system is particularly suitable for use in lifting gates with a retractable gate curtain or in spiral lifting gates in which the gate curtain is guided in a spiral with its lateral edges.
- the invention can be used with low-lintel doors and vertical and sideways runners.
- the invention also includes a door, in particular a lifting door, having the safety system as described above.
- the gate in particular the lifting gate
- the gate is characterized in that the gate, in particular the lifting gate, is designed as a high-speed lifting gate with a gate curtain or a gate curtain, with the intended operation of the gate, in particular the lifting gate, an opening speed of the gate curtain or the door curtain of more than 1.0 m/s in some areas, preferably 1.5 m/s, particularly preferably 2.0 m/s, up to a maximum of 5.0 m/s, and a closing speed of at least more than 0.3 m/s in some areas s to 1.5 m/s, in particular greater than 0.5 m/s to 0.8 m/s.
- the safety system according to the invention has proven particularly effective as a supplement to other catch systems which engage directly with the gate curtain or gate curtain for gates, particularly in the design as high-speed gates. This is due in particular to the short reaction time from a tearing of the traction mechanism to an effective blockage of the drive shaft. In this way, an impulse of the gate curtain/gate curtain that is difficult to absorb with increasing falling speed can be prevented and the synchronous shaft/winding shaft can be blocked at an early stage.
- the door is designed as a spiral lifting door without a winding shaft, which has a synchronous shaft.
- the invention is explained in more detail by way of example with reference to the figures, namely an application of a lifting gate in the design of a spiral lifting gate.
- FIG. 1 a perspective partial view of a lifting gate according to the invention with a drive having the safety system according to the invention in a perspective representation;
- FIG. 2 the safety system according to the invention in a side view in a normal position with the traction mechanism intact;
- FIG. 3a in a partially transparent perspective illustration, the interaction of a blocking element, in particular its holding section, with a holding device in a position held in pretension (normal operating position of the drive);
- FIG. 3b the holding device and the holding section in an enlarged detailed view
- FIG. 4a the above-described embodiment of the safety system according to the invention in the normal position with the traction mechanism intact;
- FIG. 4b the safety system according to the invention in a blocking position with torn traction means
- FIG. 5 a modification of the safety system, in which the traction mechanism forms the holding device.
- the invention can also be used to advantage in so-called roller doors, in which the door curtain is wound around a winding shaft.
- the term lifting gate used in the exemplary embodiment is to be understood generally as a gate in the different embodiments described above.
- a safety system 1 according to the invention in an application on a lifting gate 100 is shown in FIG.
- the synchronous shaft 101 which in the case of a lifting gate 100 in the design of a lifting gate with a curtain that can be rolled up, can also be a winding shaft, is designed and set up in the present design of the lifting gate 100 as a spiral lifting gate for the purpose of attaching a gate curtain 103, which, for example, consists of slats or of otherwise in rigid segments can be designed to move up and down.
- the gate curtain 103 is formed from a large number of slats/segments 104, which are each connected to one another in an articulated manner at their longitudinal edges.
- the door curtain 103 is guided laterally in guide rails (not shown), which are fastened to frames 105, for example.
- the synchronous shaft 101 running in the horizontal direction is mounted and coupled to a driven gear 10 in a torque-transmittable manner.
- the driven wheel 10 is part of a drive 50 for the door curtain 103.
- the drive 50 has a drive wheel 11 which is coupled to a drive motor 12.
- the drive wheel 11, which is driven by the drive motor 12, is connected to the driven wheel 10 by means of an endlessly revolving traction mechanism 13.
- the endlessly circulating traction means 13 can be, for example, a chain, a V-belt or a toothed belt, with the drive wheel 11 and Output wheel 10 are sprockets, V-belt wheels or toothed belt wheels.
- the drive 50 also includes a blocking element 15 as an essential component of the safety system 1.
- the blocking element 15 has a blocking element 16 (not shown in FIG.
- the lever arm 17 is rigidly connected to the blocking element 16 and is mounted pivotably with respect to the frame 105 about a first pivot axis S1.
- the drive motor 12 is connected to a motor bracket 18, wherein the motor bracket 18 is arranged at least partially pivotable about a second pivot axis S2 with respect to the frame 105.
- the motor bracket 18 is fastened via a bearing block 19 to the frame 105 or a part that is comparable to the frame 105 and is immovable.
- the pivot axes S1 and S2 are in particular aligned parallel to a longitudinal axis of the drive motor 12 and to a longitudinal axis of the winding shaft/synchronous shaft 101 .
- FIG. 1 shows a state of the security system 1 according to the invention in a so-called normal position, i. H. with a traction mechanism 13 which is intact, d. H. not cracked/broken.
- the safety system 1 according to the invention is able, in the event of the traction means 13 tearing/breaking, to shift into a blocked position in which the winding shaft/synchronous shaft 101 is blocked.
- a blocking position is explained in more detail below in connection with the description of FIG. 4b.
- a pedestal 20a which is covered in FIG. 1, is arranged on the engine bracket 18 as a holding device 20.
- the pedestal 20a (cf. Figures 3a, b) provides a surface 21 available on which in the normal position according to Figure 1, Figure 2, Figures 3a, b and Figure 4a a holding portion 22, which in the embodiment according to the figures, for example as Ball bearing 22a is formed, can rest. In the normal position, i.e.
- the ball bearing 22a rests on the surface 21 and holds the lever arm 17 or its center of gravity in a raised and pivoted position relative to its lowest possible vertical position, so that the lever arm 17 has a higher potential energy due to gravity than in an undeflected, vertically lowest position.
- This potential energy of the lever arm 17 is maintained by the pedestal 20a, on which the ball bearing 22a rests, during normal operation of the drive 50 and the safety system 1 (also in its normal position).
- the safety system 1 in particular its lever arm 17 and thus the entire blocking member 15 is prestressed, namely arranged prestressed due to potential energy.
- the blocking element 16 is not in engagement with the driven wheel 10, so that the driven wheel 10 can rotate freely in both possible directions of rotation and the door drive can therefore move the door curtain/door curtain 103 up and down in the intended manner.
- the blocking element 16 (see FIG. 2) is designed as a toothed segment 30 .
- the toothed segment 30 has teeth 31 along its circumference, which can mesh with at least one toothed section 32 of the output gear 10 .
- the driven wheel 10 is designed as a chain wheel or as a toothed belt wheel, the teeth that are present in any case can be used as the toothed section 32 .
- the driven wheel 10 is designed as a V-belt or V-ribbed belt wheel, for example, it is expedient to provide a corresponding toothed section 32 adjacent to the raceways of the V-belts/V-ribbed belts, which is able to mesh with the toothed segment 30 .
- the toothed segment 30 In a region which is closest to the output wheel 10 in the normal position, the toothed segment 30 has a smaller radius of the toothing there with respect to the pivot axis S1.
- the distance between the toothing and the first pivot axis S1 increases eccentrically in the opposite direction to the direction of engagement E, so that a tooth of the toothing that is further away from the direction of engagement E has a greater radial distance (radius) from the pivot axis S1 than the first tooth in the direction of engagement E.
- the increase in the radius occurs eccentrically from the first to the last tooth of the toothed segment 30 continuously.
- the toothed segment 30 of the blocking element 16 is z. B. attached to the frame 105 pivotable about the first pivot axis S1.
- a stop 34 is provided against which—as will be described below—the lever arm 17 rests when the safety system 1 is in a blocked position.
- the lever arm 17 with its holding section 22, which is designed, for example, in the form of the ball bearing 22a, together with the pedestal 20a as the holding device 20, represents a prestressing device 28, by means of which the lever arm 17 can be potential energy biased state is kept biased in the normal position of the security system 1.
- the pretensioning of the pretensioning device 28 is released and thus, due to the potential energy stored in the lever arm 17, an automatic actuation/pivoting displacement of the blocking element 16 about the pivot axis S1 can take place.
- pretensioning device 28 could be spring devices, for example torsion springs, which resiliently pretension the blocking element 16 about the first pivot axis S1 by means of spring energy, in support of or as an alternative to the pretensioning by means of potential energy.
- a spring device would support part of the pretensioning device 28 or would be the pretensioning device 28 on its own.
- FIGS. 4a (normal position) and 4b which shows the blocked position.
- FIG. 1 shows the normal position of the safety system 1 according to the invention, in which the traction mechanism 13 is intact and, as intended, connects the drive wheel 11 to the driven wheel 10 in a torque-transmittable manner.
- the traction mechanism 13 is designed, for example, as a toothed belt.
- the lever arm 17 In this position, the lever arm 17 is in its prestressed position, with the holding section 22 (ball bearing 22a) covered in FIG. 4a resting on the holding device 20, in particular the pedestal 20a.
- the motor bracket 18 is in a position suitable for this purpose, with the traction mechanism 13 being properly tightened, for example by means of a clamping screw 35. B. against the frame 105 biasing.
- the blocking element 16 is arranged in this position in such a way that none of the teeth of the toothed segment 30 is in engagement with corresponding teeth of the output gear 10 . In this state, proper up and down operation of the door curtain/door curtain 103 (not shown in FIG. 4a) of the lifting door 100 is ensured.
- the traction means 13 breaks or tears.
- the motor bracket 18 can move away in the direction of the arrow 200 by gravity, pivoting about the second pivot axis S2. In normal operation, the traction means 13 thus keeps the motor bracket 18 pretensioned against the clamping screw 35 . If, in the event that the traction mechanism 13 tears, the motor bracket 18 moves away together with the drive motor 12 in the direction of arrow 200 due to gravity, the holding device 20, i.e. the platform 20a, is also moved and performs a movement along the direction of arrow 201 with the second pivot axis S2 as a pivot.
- the surface 21 of the pedestal 20a is also displaced below the ball bearing 22a, ie below the holding section 22, so that after a certain distance the ball bearing 22a is no longer supported by the surface 21.
- a pivoting movement of the lever arm 17 begins together with the blocking element 16 along the direction of the arrow 202 with the first pivot axis S1 as the pivot.
- teeth of the Blocking element 16 with teeth of the driven gear 10 engaged.
- the downward striving gate curtain/gate curtain 103 applies a torque to the driven wheel 10 in the direction of arrow 203, which moves the blocking element 15 (blocking element 16 and lever arm 17) further along the direction of arrow 202, even beyond the point at which a center of gravity of the blocking member 15 has reached its lowest vertical point.
- the corresponding radial contact pressure between the blocking element 16 and the output gear 10 is increased as a result of the toothing radius increasing as the pivoting progresses in the direction of the arrow 202 .
- the lever arm 17 moves into its mechanically possible end position (blocking position) according to FIG. In such a position, it is no longer possible for the output wheel 10 to rotate further in the direction of the arrow 203, ie it is blocked, and further lowering of the door curtain/door curtain 103 is prevented.
- the lever arm 17 is arranged in such a way that it comes to rest in an imaginary normal travel path 205 of an intact traction mechanism 13 or, in the illustration according to FIG. 4b, crosses it.
- the lever jib 17 is located in the plane of the traction means 13, viewed in a direction perpendicular to the plane of the page in FIGS. 4a, 4b.
- the safety system 1 creates a mechanically particularly simple, reliable and, despite everything, non-destructive safety system 1, which can be returned to its original state without further replacement of components (with the exception of the torn traction means 13). If it is triggered by a torn traction mechanism 13, it is not absolutely necessary to replace other parts.
- the safety system according to the invention can be operated without external energy supplies.
- no electrical, hydraulic or pneumatic energy supplies are necessary.
- a roller 51 can be located, for example, at the free end of the lever arm 17, which uses the traction means 13 itself, in particular—as shown—the inside or the outside thereof, as a holding device 20.
- the traction means 13 tears the no longer tensioned inside of the traction means 13 then releases the above-mentioned roller 51 and the blocking member 15 can be moved from its normal position analogous to the embodiment described above via the engaged position, i.e. the position in which the first teeth of the Blocking member 16 mesh with the driven gear 10 in its Reach blocking position and thus blocking the driven wheel 10 and the winding shaft or the synchronous shaft 101 act.
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Power-Operated Mechanisms For Wings (AREA)
- Operating, Guiding And Securing Of Roll- Type Closing Members (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102020122719.1A DE102020122719A1 (en) | 2020-08-31 | 2020-08-31 | Safety system for a drive of a gate, in particular a lifting gate, more particularly a high-speed lifting gate, and gate having the safety system, having a revolving traction mechanism |
PCT/EP2021/073778 WO2022043514A1 (en) | 2020-08-31 | 2021-08-27 | Safety system for a drive, which has a circulating traction mechanism, of a gate, in particular a lifting gate, more particularly a high-speed lifting gate, and gate comprising said safety system |
Publications (2)
Publication Number | Publication Date |
---|---|
EP4204656A1 true EP4204656A1 (en) | 2023-07-05 |
EP4204656B1 EP4204656B1 (en) | 2024-10-02 |
Family
ID=77774890
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP21770170.5A Active EP4204656B1 (en) | 2020-08-31 | 2021-08-27 | Safety system for a drive, which has a circulating traction mechanism, of a gate, in particular a lifting gate, more particularly a high-speed lifting gate, and gate comprising said safety system |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP4204656B1 (en) |
JP (1) | JP7549133B2 (en) |
CN (1) | CN115843322A (en) |
DE (1) | DE102020122719A1 (en) |
WO (1) | WO2022043514A1 (en) |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1659481U (en) | 1953-05-08 | 1953-07-16 | Telefonbau & Normalzeit Gmbh | LOCKING PUSH BUTTON, IN PARTICULAR FOR FIRE ALARMS. |
DE1659481A1 (en) | 1965-07-29 | 1969-10-02 | Busch Jaeger Duerener Metall | Protection against unintentional closing of roller shutters |
DE9403957U1 (en) * | 1994-03-10 | 1995-07-20 | Lucas, Bernd, 49809 Lingen | Fall protection |
US5706552A (en) * | 1996-08-30 | 1998-01-13 | Hsieh; Tsung-Wen | Apparatus for preventing a motor rolling door from falling |
CN2286237Y (en) * | 1996-12-20 | 1998-07-15 | 汕头经济特区龙亨自动门窗有限公司 | Chain breakage proof protector for electric rolling machine for door |
CN2373548Y (en) | 1999-05-18 | 2000-04-12 | 漳州市杰龙卷帘机电厂 | Anti-skid device for rolling door |
JP4440631B2 (en) | 2003-12-26 | 2010-03-24 | 文化シヤッター株式会社 | Switchgear |
JP5041738B2 (en) | 2006-06-13 | 2012-10-03 | 三和シヤッター工業株式会社 | Fall prevention device for architectural shutter device |
JP5112657B2 (en) | 2006-08-08 | 2013-01-09 | 三和シヤッター工業株式会社 | Switch mounting structure |
JP4993571B2 (en) * | 2006-10-10 | 2012-08-08 | 文化シヤッター株式会社 | Switchgear |
DE102009044492B8 (en) * | 2009-11-10 | 2012-03-01 | Efaflex Inženiring D. O. O. Ljubljana | Roller door, in particular high-speed industrial door |
DE202012001954U1 (en) | 2012-02-28 | 2013-05-29 | GfA-Gesellschaft für Antriebstechnik Dr.-Ing. Hammann GmbH & Co. KG | Drive arrangement with safety gear |
DE102017102614A1 (en) | 2017-02-09 | 2018-08-09 | Efaflex Tor- Und Sicherheitssysteme Gmbh & Co. Kg | Door panel crash detection system, door panel crash detection system, and door panel crash detection method |
-
2020
- 2020-08-31 DE DE102020122719.1A patent/DE102020122719A1/en active Pending
-
2021
- 2021-08-27 WO PCT/EP2021/073778 patent/WO2022043514A1/en active Search and Examination
- 2021-08-27 EP EP21770170.5A patent/EP4204656B1/en active Active
- 2021-08-27 CN CN202180048156.5A patent/CN115843322A/en active Pending
- 2021-08-27 JP JP2023512657A patent/JP7549133B2/en active Active
Also Published As
Publication number | Publication date |
---|---|
CN115843322A (en) | 2023-03-24 |
WO2022043514A1 (en) | 2022-03-03 |
JP7549133B2 (en) | 2024-09-10 |
EP4204656B1 (en) | 2024-10-02 |
JP2023543967A (en) | 2023-10-19 |
DE102020122719A1 (en) | 2022-03-03 |
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