EP3382131A1 - Gate and actuating module for a gate - Google Patents

Abstract

Gate with a movable between a closed position and an open position door leaf, a preferably rope-shaped, in particular wire rope-shaped and coupled to the door leaf force transmission means for transmitting an opening force on the door leaf, a movable storage device, released by the power transmission means in the course of a closing movement of the door leaf by a release movement and is received in the course of an opening movement by a receiving movement, and an actuating device coupled to the storage device, with which the release movement and the receiving movement of the storage device in the course of the closing movement or the opening movement of the door leaf is mediated, characterized by a limiting device for limiting the of the Actuating device transferable to the storage device force and / or transferable from the actuator to the storage device Movement torque, in particular torque.

Description

The invention relates to a gate with a movable between a closed position and an open position door leaf, a preferably rope-shaped, in particular wire-shaped and coupled to the door leaf force transmission means for transmitting an opening force on the door leaf, a movable storage device of the force transmission means in the course of a closing movement of the door leaf a release movement is released and received in the course of an opening movement by a receiving movement and a coupled to the storage device manually operated actuator, with the release movement and the receiving movement of the storage device is mediated in the course of a closing movement or opening movement of the door leaf.

In such gates, as they are also used in the context of the invention, the door leaf is regularly arranged in the closed position approximately in a vertical plane and arranged in the open position above the head usually in a horizontal plane. The door leaf can be made in one piece. In the case of so-called sectional doors, however, it comprises a plurality of door leaf elements which extend perpendicular to the door leaf movement direction Joint axes are hinged together. Such gates, as they can be used in the context of the invention are, for example, in the EP 370376 A1 disclosed.

In the course of Torblattöffnungsbewegung the door leaf must be raised against the force of gravity and moved into the usually over-head opening position. This movement is usually guided by guide rail arrangements. Further, the movement is usually supported by a weight balancing device which is coupled via the power transmission means to the door leaf and exerts an opening force acting on the arranged in the closed position door leaf.

Such a weight compensating device may, for example, be designed as a torsion spring, which rotates a torsion spring shaft, which is usually arranged above the opening to be closed by the door leaf and extends approximately perpendicular to the direction of the door leaf movement. In this case, one end of the torsion spring is held stationary, while the other end is coupled to the rotatably mounted torsion spring shaft. A storage device in the form of a cable drum can be arranged coaxially with the torsion spring shaft, from which a cable, in particular wire rope, coupled to the door leaf is unwound in the course of the closing movement of the door leaf by rotating the torsion spring shaft. The rotation of the Torsionsfederwelle in the course of the closing movement causes a tension of the torsion spring. The stored energy in the tensioned torsion spring is then available to assist the opening movement of the door leaf. The force exerted by the torsion spring is transmitted via the unwound from the storage device forming a cable drum power transmission means in the form of a wire rope on the door leaf.

The rotation of the cable drum in the course of the closing movement, by which the wire rope is released from the cable drum, thereby represents a release movement of running as a cable drum storage device. On the other hand, coupled to the door leaf rope in the course of an opening movement by the supported by the torsion spring rotation of Reel drum wound in a direction opposite to the release movement again on the cable drum. The corresponding movement of the cable drum is referred to as a picking movement.

In manually operated gates, an actuator may be provided with a coaxial with the cable drum and rotatably connected sprocket. The sprocket may be circulated by a hand chain that meshes with the sprocket. By pulling on the hand chain a rotary motion is transmitted to the sprocket and thus also to the cable drum. By this rotation, a wire releasing releasing movement of the storage device or a leading to winding the wire rope receiving movement of the cable drum in the context of a closing or opening movement of the gate mediates.

When using appropriate gates, in particular manually operated gates, a so-called cable break catch device is sometimes activated, in particular during a closing movement, when the force exerted by the door leaf under the effect of gravity on the force transmission means falls below a predetermined value. Then another Torblattbewegung is stopped, while under certain circumstances, a release movement of the storage device takes place with the other areas of the power transmission means are released. This causes a malfunction of the door, which can be eliminated only by service technicians.

In view of these problems in the prior art, the invention has the object to ensure the reliable operation of generic gates without the use of service technicians.

According to the invention this object is achieved by a development of the known goals, which is characterized essentially by the fact that the actuator, for example, a rotating from a hand chain and with respect to a parallel, in particular coaxial with the Torsionsfederwelle rotatable operating wheel, such as a sprocket belt pulley or a Having pulley, a limiting device for limiting the force transmitted from the actuator to the memory device and / or of the actuating device to the memory device transferable moment of motion, in particular torque, assigned.

• In der Öffnungsstellung ist das Torblatt üblicherweise etwa in einer Horizontalebene über Kopf angeordnet, und wird von geeigneten Trägersystemen, wie etwa Führungsschienen, abgestützt. Die das Torblatt in die Schließstellung drängende Kraft muss sowohl die entgegenwirkende Kraft der Gewichtsausgleichseinrichtung, wie etwa der Torsionsfeder, als auch die Massenträgheit des Torblatts selbst überwinden. Diese Kraft wird zum Teil von der Gewichtskraft des Torblatts zur Verfügung gestellt, wenn das Torblatt zumindest teilweise in der die Torblattbewegung führenden Führungsanordnung unter der Schwerkraftwirkung in Richtung auf die Schließstellung gedrängt wird. In einigen Fällen ist ein Federpuffer vorgesehen, der bei Erreichen der Öffnungsstellung beispielsweise durch den bei der Öffnungsbewegung vorlaufenden Rand des Torblatts gespannt wird, so dass die darin gespeicherte Kraft zur Unterstützung der Öffnungsbewegung zur Verfügung steht. Jedenfalls ist die zu Beginn der Torblattöffnungsbewegung verfügbare und in Öffnungsrichtung wirkende Kraft vergleichsweise gering.

This invention is based on the following finding:

• In the open position, the door leaf is usually located about in a horizontal plane above the head, and is supported by suitable support systems, such as guide rails. The force urging the door leaf into the closed position must overcome both the counteracting force of the counterweight device, such as the torsion spring, and the mass inertia of the door leaf itself. This force is provided, in part, by the weight of the door leaf when the door leaf is at least partially urged in the direction of the closed position by the force of gravity to guide the door leaf movement. In some cases, a spring buffer is provided, which is stretched when reaching the open position, for example, by the leading edge during the opening movement of the door leaf, so that the stored therein power is available to support the opening movement. In any case, the force available at the beginning of the door leaf opening movement and acting in the opening direction is comparatively small.

In this state, when the actuator is operated with great force to cause rapid release of the power transmission means, the available force (gravity, spring buffer) urging the door panel to the closed position may not be enough to accelerate the door panel sufficiently quickly so that it is accelerated in accordance with the release of the power transmission means in the direction of the closed position. Then, the weight force of the door leaf does not exert sufficient force on the power transmission means. When the power transmission means in the form of a wire rope is realized, this passes after release from the storage device unwound from the storage without slack between the storage device and the door leaf, resulting in the triggering of a cable breaker, which in turn stops the Torblattbewegung, while other areas the power transmission means are released from the storage device or other sections of the wire rope are unwound from the cable drum. This can also cause the wire rope can not be wound in a controlled manner on the cable drum, because it runs chaotically between the cable drum and the coupling point on the door leaf without biasing force.

By the use of a limiting device according to the invention, the speed of the release of the power transmission means of the memory device is limited because the coupling between actuator on the one hand and memory device on the other hand when large forces occur, as may occur when jerky tightening the hand-operated actuator, separated and the actuator then independent of the storage unit is moved. As a result, overly rapid release of the power transmission means from the memory device can be prevented and a sufficient voltage of the power transmission means between the coupling point on the door leaf and the memory device can be ensured.

In addition, the opening speed of the door leaf can be limited by the limiting device. In the case of manually operated gates, by pulling the hand chain and correspondingly rotating the sprocket, the power transmission means or cable should be wound on the cable drum at an excessively high speed, resulting in a correspondingly high opening speed, the actuator being separated from the storage means by means of the limiting means. This can avoid that the door leaf runs when reaching the open position at an excessively high speed against a corresponding stop or spring buffer. Also damage to the gate can be avoided.

As already mentioned above, the force transmission means according to the invention is preferably cord-shaped, in particular designed in the form of a wire rope, while the gates Storage device has a drum drum with respect to a rotatable drum, released by the rope in the course of a closing movement and on which the rope is wound in the course of an opening movement. The drum axis runs approximately perpendicular to the direction of movement of the door. The drum can also be designed frustoconical, so that at the beginning of a closing movement a shorter cable length per revolution of the cable drum is released from the cable drum than at the end of the closing movement. This takes into account the fact that less closing force is available at the beginning of the closing movement than at the end of the closing movement.

As already mentioned above, the actuating device may be a possibly by a hand chain, a hand belt, such as a toothed belt, or a hand rope circulating and this meshing operating wheel to rotate, the cable drum and the operating wheel are preferably rotatable relative to a common axis of rotation, also is intended to the use of gearboxes with axial offset between the input and output shaft, and at least the cable drum with respect to a shaft extending coaxially to the axis of rotation, such as a torsion spring shaft is fixed. The cable drum is rotatably connected to the shaft. This can be achieved by a positive connection.

In the force limitation according to the invention with the aid of a limiting device, the actuating wheel realized, for example, as a sprocket, belt pulley or pulley is, if appropriate, indirectly connected indirectly to the shaft via a friction clutch separating upon reaching a predetermined torque. For this purpose, the operating wheel can be arranged for example on a non-rotatably connected to the shaft stub shaft, wherein the friction clutch transmits a rotational movement of the sprocket on the stub shaft before reaching a predetermined torque, which in turn is rotatably connected to the shaft connected to the cable drum. When the predetermined torque is exceeded, the friction clutch separates the rotational movement of the sprocket from the stub shaft, so that the actuating wheel is then rotated independently of the stub shaft and thus also independent of the shaft. For motorized gates can according to DE 2702032 A1 Slip clutches are used to compensate for the differences between a drive shaft and a hoist winch. According to DE 2027491 A1 is prevented with a slip clutch that the door leaf is urged with tensioned energy storage in engine operation in the closed position.

In a particularly preferred embodiment of the invention, the friction clutch at least one optionally connected via the shaft stub rotatably connected to the shaft and a voltage applied to a preferably approximately perpendicular to the axis of rotation end face of the actuating wheel friction disc and a biasing means for generating a biasing force with the friction disc and the operating wheel are urged against each other, on. If an axial movement of the actuating wheel is blocked along the shaft axis, a frictional engagement between the friction disc and the actuating wheel is achieved by the biasing force, the torque of the actuating wheel to the friction disc and thus to the shaft and the Cable drum allows while the friction is separated when the predetermined torque is exceeded.

In a further preferred embodiment of the invention, the friction clutch on two friction plates, between which the operating wheel is received, of which at least one rotatably connected to the shaft or the stub shaft and at least one fixed in the axial direction with the shaft or stub shaft, or forms an axial stop for axial movement of the actuating wheel.

The pretensioning device of a friction clutch according to the invention may have a diaphragm spring, which may possibly be indirectly connected via a clamping disk to the boundary surface of the friction disk facing away from the actuating wheel.

In a particularly preferred embodiment of the invention, the biasing means may comprise adjusting means for adjusting the force urging the friction disc against the operating wheel, so as to be able to adjust the predetermined torque at which the friction clutch separates.

In a particularly preferred embodiment of the invention, the adjusting device on a facing away from the friction disc boundary surface of the plate spring can be applied groove nut. By rotating the groove nut with respect to the shaft axis, an axial movement of the groove nut and thus an adjustment of the bias of the plate spring is effected.

As already explained, the shaft can have a torsion spring shaft which revolves around a torsion spring, wherein the torsion spring is tensioned in the course of the closing movement of the door leaf. In this case, the actuating device and the limiting device can be arranged on a releasably connected to the torsion spring shaft and in the assembled state coaxially extending stub shaft. In this embodiment of the invention, actuator and limiting means may be detachably and interchangeably attached to the torsion spring shaft.

An inventive actuation module designed for producing a door according to the invention by means of retrofitting already mounted doors accordingly has an actuation device and a delimiting device, wherein the delimiting device transmits one of the actuation device to a memory device for a force transmission means the force exercisable by the gate can be limited. In a preferred embodiment of the invention, the actuating device and the limiting device of an actuating module according to the invention are arranged on a shaft stub which can be detachably connected to the torsion spring shaft.

Fig. 1

einen eine Betätigungseinrichtung aufweisenden Bereich eines erfindungsgemäßen Tors,

Fig. 2

eine perspektivische Darstellung eines erfindungsgemäßes Betätigungsmoduls, und

Fig. 3

eine Ansicht des Betätigungsmoduls gemäß Fig. 2.

The invention will be explained with reference to the drawing, to which reference is expressly made with respect to all essential to the invention and in the description unspecified highlighted details. In the drawing shows:

Fig. 1

an actuating device having a region of a door according to the invention,

Fig. 2

a perspective view of an inventive actuating module, and

Fig. 3

a view of the actuating module according to Fig. 2 ,

This in Fig. 1 Tor shown has a weight balancing device with a torsion spring rotating around a torsion spring 12. One end of the torsion spring 12 is coupled to the rotatably mounted Torsionsfederwelle 10, while the other end of the torsion spring is fixedly mounted. By rotating the torsion spring shaft 10, which extends approximately in the horizontal direction over the head, the torsion spring is tensioned or relaxed. In addition to the torsion spring serving as a storage device for a power transmission means in the form of a wire rope drum 20 is rotatably connected to the Torsionsfederwelle so that the wire during an opening movement, which leads to the tension of the torsion spring 12, unwound from the cable drum or during a closing movement of the door leaf , which is supported by the tensioned torsion spring 12, is wound on the cable drum.

On the side facing away from the torsion spring 12 of the cable drum 20, an actuating module 100 according to the invention is mounted. As in Fig. 2 and 3 illustrated, the actuation module 100 has a rotatably coupled to the torsion spring shaft 10 stub shaft 120, which rotatably mounted on the Torsionsfederwelle via a coupling nose 122 which engages in a corresponding recess in the Torsionsfederwelle 10 and with the aid of bores 124 passing through nuts on the Torsionsfederwelle can be secured. The stub shaft 120 extends coaxially with the axis of the torsion spring shaft 10. On the stub shaft 120, a designed as a sprocket 130 operating wheel is placed, which is rotatable with respect to the axis of the Torsionsfederwelle.

The rotational movement of the sprocket 130 is a total of 140 designated limiting device on the stub shaft 120 and thus also on the torsion spring shaft 10th transfer. The limiting device comprises a friction disc 142 designed as a brake disk, which abuts against an end face 132 of the sprocket 130 running perpendicular to the axis of the torsion spring shaft. The brake disc 142 is urged by means of a plate spring 144 against the end face 132 of the sprocket 130, which by means of a in Fig. 3 recognizable further brake disc 143, which abuts against the end face 132 opposite end face, is locked in the axial direction. The biasing force of the plate spring 144 is transmitted via a clamping disc 146 on the end face 132 of the sprocket 130. The biasing force is adjustable by means of a groove nut 148. For this purpose, the groove nut 148 on a shaft axis of the shaft stub 120 circumferential thread (see. Fig. 2 ) are screwed and so are offset in the axial direction. By the axial displacement of the groove nut, the plate spring 144 is biased so as to adjust a torque at which the friction clutch produced by the brake discs 142, 143 on the one hand and stub shaft 120 on the other hand is separated.

If an excessive torque is exerted on the sprocket 130 by means of a sprocket rotating and meshing this sprocket, this is not transmitted via the friction coupling to the stub shaft 120 and thus the Torsionsfederwelle and the torsion spring. This prevents the cable 22 from being unwound from the cable drum 20 at such a high speed that the edge of the door leaf leading to the closing movement can no longer follow the release movement and the cable then becomes slack.

The invention is not limited to the embodiment described with reference to the drawing. Rather, the actuation module can also be produced in one piece with the torsion spring shaft 10. It is also thought to arrange the cable drum on the side facing away from the torsion spring side of the actuating module. Gates according to the invention can also be equipped with tension spring systems for weight compensation. It is also thought to use other transmission means instead of a wire rope. It is essential that an actuating device is provided, with which the force or the torque is limited, by which or the storage device for the power transmission means can be transmitted.

Claims (15)

Gate with a movable between a closed position and an open position door leaf, a preferably rope-shaped, in particular wire rope-shaped and coupled to the door leaf force transmission means for transmitting an opening force on the door leaf, a movable storage device, released by the power transmission means in the course of a closing movement of the door leaf by a release movement and is received in the course of an opening movement by a receiving movement, and a hand-operated actuating device coupled to the storage device, with which the release movement and the receiving movement of the storage device in the course of the closing movement or the opening movement of the door leaf is mediated, characterized by a limiting device for limiting the the actuator on the storage device transferable force and / or of the actuator on the storage device Transmittable moment of motion, in particular torque. Door according to claim 1, characterized in that the power transmission means is rope-shaped and the storage means comprises a respect to a drum axis rotatable cable drum, released by the rope in the course of a closing movement and on which the rope is wound in the course of an opening movement. Door according to claim 2, characterized in that the actuating device comprises an operating wheel, such as a sprocket, a belt pulley or a pulley, wherein the cable drum and the operating wheel are preferably rotatable relative to a common axis of rotation and at least the cable drum with respect to a coaxial to the axis of rotation shaft is attached. Door according to claim 3, characterized in that the cable drum rotatably, in particular form-fitting, is connected to the shaft. Door according to claim 3 or 4, characterized in that the actuating wheel is connected via a separating at a predetermined torque friction clutch, if necessary indirectly, with the shaft. Door according to claim 5, characterized in that the friction clutch at least one rotatably connected to the shaft and at a preferably approximately perpendicular to the axis of rotation extending end face of the actuating wheel adjacent friction disc, in particular brake disc, and a biasing means for generating a biasing force, with which the friction disc and the operating wheel are urged against each other, having. Door according to one of the preceding claims, characterized in that the friction clutch comprises two friction plates, between which the actuating wheel is received, of which at least one rotationally fixedly connected to the shaft and forms a stop for an axial movement of the actuating wheel. Door according to claim 6 or 7, characterized in that the biasing means has an optionally indirectly on the side facing away from the actuating wheel boundary surface of the friction disc plate spring. Door according to claim 8, characterized in that the biasing means comprises an adjusting means for adjusting the friction washer urging the actuating wheel. Door according to claim 9, characterized in that the adjusting device has a facing away from the friction disc boundary surface of the plate spring engageable groove nut. Door according to one of the preceding claims, characterized in that the shaft has a torsion spring shaft revolving by a torsion spring, wherein the torsion spring is tensioned in the course of a closing movement of the door leaf and / or the actuating device and the limiting device on a releasably connected to the Torsionsfederwelle and mounted in the Condition coaxially extending stub shaft are arranged. Door according to one of claims 3 to 11, characterized in that the operating wheel of a hand chain, a hand belt, in particular toothed belt or a hand rope is circulated. Actuating module for producing a door according to one of the preceding claims with an actuating device and a limiting device for limiting the transferable from the actuator to a storage device force or of the actuator on the storage device transferable moment of motion, in particular torque. Actuating module according to claim 13, characterized by a stub shaft, on which the actuating device and the limiting device are arranged. Actuating module according to claim 14, characterized in that the stub shaft has a coupling region for the rotationally fixed coupling of the stub shaft with the torsion spring shaft.

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