EP2835480A2 - Gate - Google Patents

Abstract

The invention relates to a gate with a along a predetermined path between an open position and a closed position movable door leaf and on the one hand to a coupling region of the door leaf and on the other hand to an opening movement of the door support sheet weight compensation device coupled traction means and responsive to a change in a bias voltage of the traction device wherein the securing device has an under the action of a biasing device can be applied to the traction means and designed upon removal of the traction means for operating a slack rope safety switch Wächterereinrichtung.

Description

The invention relates to a gate with a along a predetermined path between an open position and a closed position movable door leaf and on the one hand to a coupling region of the door leaf and on the other hand to an opening movement of the Torbelattens supporting weight compensation device coupled traction means and a change in a caused by the weight balancing bias the traction means appealing security device.

Gates of this type are, for example, realized in the form of tilting gates with integrally designed door leaves, roller doors with in the open position wound into a multi-layered winding door leaves and sectional doors. In these types of doors, the door leaf is usually arranged in the open position above the head, while it can be arranged in the case of tilting gates and sectional doors approximately in a horizontal plane, while it is wound up at rolling doors to form a multi-layered winding. In order to support the Torblattbewegung from the closed position to the open position counterbalancing devices in the form of tension or torsion springs are used, which stretched in the course of a closing movement so that the energy stored in the counterbalancing devices can be used to assist the opening movement. For this purpose, the weight compensation device is coupled via a traction means to the door leaf. The traction means is biased by the weight balancer.

In sectional doors, the door leaf consists of a plurality of with respect to perpendicular to the Torblattbewegungsrichtung hinge axes hingedly interconnected Torblattelementen, the door leaf is usually arranged in the open position above the head in a horizontal plane and in the closed position in a vertical plane. To guide the Torblattbewegung such sectional doors usually guide rail assemblies are used, with a first rectilinear portion which extends approximately parallel to a lateral edge of the door leaf in the closed position, and a second approximately rectilinear portion extending in the horizontal direction approximately parallel to the Torblattrand extends in the open position, and an arcuate portion with which the two rectilinear portions are interconnected. Corresponding guide rails are arranged on both lateral edges of the door leaf.

In such gates, the opening movement of the door leaf can be effected or assisted by using a traction means with which the door leaf is pulled from the closed position to the open position. The traction means is realized, for example, in the form of a wire rope coupled to a lower edge of the door leaf, which is wound onto a storage device in the form of a cable drum in the course of the opening movement of the door leaf. The weight compensation device usually provided for supporting the door leaf movement is, for example, tensioned in the form of a torsion spring revolving around a torsion spring shaft in the course of the closing movement of the door leaf, so that the energy then stored is available to support the opening movement. The torsion spring shaft usually extends approximately perpendicular to the Torblattbewegungsrichtung or to the guide rails of a sectional door, which serves as a storage device cable drum coaxial with the Torsionsfederwelle arranged at one axial end thereof, in particular. Rotationally connected thereto.

In such gates, the torsion spring shaft may be at the rear end of the horizontally extending guide rail sections facing away from the opening to be closed with the door leaf or be arranged above the vertically extending guide rail sections.

The closing movement of corresponding door leaves is supported by the weight of the door leaf, wherein the closing movement of the counteracting spring force acting as a counterbalance spring, esp. Torsion spring, must be overcome. In this case, the weight balancing device is to be dimensioned so that the door leaf is not transferred without force from the open position to the closed position or falls. Usually motor-operated or manually operated drive means are used to effect the closing movement, with which the weight balancing device is tensioned by hand or motorized, so as to allow the promoted by the weight of the door leaf closing movement of the door leaf, at the same time released the traction means of an example. As a cable drum running memory device is made by the cable drum is rotated together with the torsion spring shaft by motor or hand operated. The cable designed as a traction device is then tensioned by the action of the weight of the moving in the closed position door leaf and acting on it by the weight balancing counterforce, whereby a defined position and bias of the traction means can be ensured even during the closing movement.

By the traction means so the restoring force is transmitted in the course of the closing movement to exciting weight balancing device on the door leaf. Accordingly, with the weight balancing device not only a promotion of the opening movement of the door leaf is achieved, but also allows a controlled closing movement and prevents uncontrolled closing of the door leaf under its weight.

In particular, in the case of motor-driven gates, this safety function of the weight compensation device, which is transmitted to the door leaf via the traction means, is to be monitored for its functionality. It must be ensured that the Torblattbewegung is stopped when the backup, eg. When tearing the traction device or breakage of the counterbalancing spring, is no longer guaranteed. In this connection, two approaches are proposed in prior art gates. According to a first solution, a slack rope safety switch is mounted in a separate housing on the door leaf and acted upon by the traction means. Once the bias of the traction device decreases, a shutdown of the Torblattbewegung is triggered via the circuit breaker. In this solution, an electrical connection between the slack rope safety switch and the means needed to shut down the Torblattbewegung is needed. For this purpose, a wiring is mounted on the door leaf, where appropriate, a junction box must be used to connect to the control on the door leaf.

In view of the problems associated with the wiring of electrical components on the moving door leaf, a solution has been developed in which a role as a slack rope safety switch roller end switch is mounted on the building wall by means of holders so that it is acted upon by the traction means, so that a change in Pretension of the traction means causes an actuation of the roller limit switch, with the desired shutdown of the Torblattbewegung is triggered. In this solution, it is not necessary to provide a wiring on the moving door leaf. However, a complex attachment of the roller limit switch is required depending on the structural conditions.

In view of the problems described above, the invention has for its object to provide a gate that is easy to assemble while ensuring the desired fall protection.

According to the invention, this object is achieved by a development of the known goals, which is characterized essentially in that the securing device has an under the action of a biasing device applied to the traction means and designed to decrease the tension means for operating a slack rope safety switch Wächterereinrichtung.

In gates according to the invention thus an additional guard device is used, which can be mounted with respect to a fixed mounted part of the door and cooperating with a slack rope safety switch ensures the required fall protection. Accordingly, it has been recognized within the scope of the invention that, by providing an additional guarding device, the problems encountered in the prior art can be solved by direct application of the slack rope safety switch by the traction means, because with the use of this additional device independent of the movement of the door leaf and the structural conditions Backup is possible. For this purpose, the guard device, as explained above, preferably at a fixed relative to the building to be closed with the gate component of Tors mounted. The achievable advantages justify the use of an additional component readily.

As already explained above, the traction means can be at least partially released by a storage device during a closing movement of the door leaf from the open position into the closed position. Then the guard device is expediently be applied to the traction means between the storage device and the door leaf-side coupling region.

The storage device may, in the case of gates according to the invention as well as in the case of conventional gates, have a drum, in particular a cable drum, onto which the traction means, which is preferably designed as a traction cable, can be wound up during a closing movement of the door leaf.

In a particularly preferred embodiment of the invention, the biasing means is coupled to the Wächterereinrichtung that it exerts a release of the traction means of the memory device favoring force on the Wächterereinrichtung and also on the traction means. In such an arrangement of the biasing device, the slack of the traction means is prevented under the effect of the guard device against the traction means urging memory device in a jerky opening or closing movement. The biasing device acting on the guard device then acts upon a closing movement of the door leaf to produce a biasing of the traction means thereon, similar to the weight compensation device normally provided in the closed state. This can ensure that the traction means is stretched in a defined manner with intact traction means in each operating condition. This effect of the inventively provided Wächterereinrichtung as a backup of a controlled release of the traction means of the storage device is in the DE 10 2009 037 467 A1 explained in detail. The disclosure of this document with regard to the function of the guarding device as a safety rope is hereby incorporated by explicit reference in this description.

To obtain a predetermined sequence of movements and to further increase the reliability of gates according to the invention, the lateral surface of the drum used as a storage device for the traction means, esp. Cable drum, preferably a drum axis encircling circumferential Seilführungsnut, in which an example Wire rope running traction means is guided. As in the case of known gates, the weight compensation device can also have a torsion spring extending helically and extending in a direction perpendicular to the door leaf movement, which is tensioned during a closing movement of the door leaf, the storage device designed as a cable drum being connected in a rotationally fixed manner to the torsion spring shaft , so that the traction cable is automatically unwound therefrom during a rotation of the torsion spring shaft in the course of a closing movement of the door leaf or is automatically wound on it upon an opening movement of the door leaf.

Expediently, the drum axis of the cable drum used as storage device extends co-linear with the shaft axis of the torsion spring shaft, wherein the storage device or cable drum can be fastened to an axial end of the torsion spring shaft.

Usually, a traction means is provided at each lateral edge of the door leaf. In this case, corresponding rope drums or storage devices are attached to both axial ends of the torsion spring shaft.

The guard means which can be applied to the traction means can have a lever which is rotatably mounted relative to the drum axis and extends in the radial direction with respect to the drum axis, with the spring or tension spring at least partially revolving around the drum axis or torsion spring shaft axis in the cable release direction, in which the traction cable of the Drum is unwindable, can be urged against the pull rope. For this purpose, the lever may be equipped at its end facing away from the drum axis with an approximately parallel to the drum axis extending contact device. The lever may have a slid on the torsion spring shaft and rotatably held thereon, for example. Disk-shaped holder. The lateral surface of the holder may have a Torsionsfederwellenachse at least partially encircling and designed to accommodate the tension spring guide groove.

When the abutment device of the lever of the guard device can be rotatably mounted on the holder with respect to a rotation axis extending parallel to a torsion spring shaft axis, the friction caused by contact of the guard device with the traction means can be reduced because the guard device is rotated during expiration of the traction means, so that instead of the sliding friction only a rolling friction occurs.

The slack rope safety switch of a door according to the invention may be attached to the rotatably mounted lever and be dissolved or acted upon by an abutment triggered by slackening of the traction means rotation of the traction device, so as to trigger the shutdown of the Torblattbewegung. For this purpose, it is not necessary to mount electrical components and / or lines on the moving door leaf. At most, it may be necessary to mount such components on the rotatable with respect to a small angle of rotation holder. The slack rope safety switch can be arranged in this embodiment of the invention in a housing of the lever, wherein an actuating element can protrude from a housing opening.

In another embodiment of the invention, the slack rope safety switch is fixedly mounted and is acted upon or released from a contact surface of the guard device or the lever, when the guard device is urged or loosened in slackening of the traction means under the action of the biasing means.

As already explained above in connection with conventional gates, the slack rope safety is used esp. In such gates, in which a designed for moving the door leaf drive means is provided.

In a particularly preferred embodiment of the invention, the safety device according to the invention is combined with a light barrier arrangement, the at least one, preferably two, three or more, transversely, esp. About perpendicular, and / or approximately parallel to the predetermined trajectory of the door leaf aligned light barrier (s) and a responsive to an interruption and / or release of a light barrier for stopping the Torblattbewegung operable control device.

Such light barrier assemblies are used in cooperation with the controller to provide additional protection in the event that persons or objects approach the path of travel of the door panel and / or the door panel leaves its predetermined path of travel. The light barrier arrangement can be arranged as well as the securing device according to the invention together with the control device fixed. Then a complete backup of the Torblattbewegung be realized without electrical components on moving door leaf parts.

Light barrier arrangements and associated safety devices are, for example, in the DE 20 2006 002 000.4 and the EP 2 236 732 A described. The disclosure of these documents is hereby incorporated by reference into this description with regard to the design of the light barrier arrangements and the associated control devices. In the cited documents, the light barrier arrangements and the associated control devices are described using the example of a roller door.

However, corresponding arrangements are also readily usable for sectional doors.

Fig. 1

eine Darstellung eines erfindungsgemäßen Tors,

Fig. 2

eine Darstellung der Vorspanneinrichtung des in Fig. 1 dargestellten Tors,

Fig. 3

eine weitere Detaildarstellung der Vorspanneinrichtung des in Fig. 1 dargestellten Tors und der daran gekoppelten Wächtereinrichtung und

Fig. 4

eine explosionsartige Detaildarstellung der Vorspanneinrichtung, des Halters und der Wächtereinrichtung einer Sicherungseinrichtung eines erfindungsgemäßen Tors,

Fig. 5

ein erfindungsgemäßes Tor mit einer Wächtereinrichtung in einer ersten Betriebsstellung und

Fig. 6

das erfindungsgemäße Tor gemäß Fig. 5 mit der Wächtereinrichtung in einer anderen Betriebsstellung.

The invention will be explained with reference to the drawing, to which reference is made for all essential to the invention and in the description not further highlighted details explained. In the drawing shows:

Fig . 1

a representation of a gate according to the invention,

Fig. 2

a representation of the biasing means of in Fig. 1 represented gate,

Fig. 3

a further detailed representation of the biasing means of in Fig. 1 shown gate and coupled thereto Wächterereinrichtung and

Fig. 4

an explosive detail of the biasing device, the holder and the guard device of a security device of a door according to the invention,

Fig. 5

an inventive gate with a Wächtereinrichtung in a first operating position and

Fig. 6

the gate according to the invention Fig. 5 with the guarding device in another operating position.

In the Fig. 1 to 3 a hand-operated gate is shown, in which a manually induced movement of a link chain 10 is transmitted via a roller chain 14 to a torsion spring shaft 20. The link chain 10 revolves around a profiled on its outer surface corresponding to the chain links operating wheel 12, so that a translational movement of the link chain 10 is converted into a rotational movement of the actuating wheel 12 about a parallel to the torsion spring shaft 20 extending axis. This rotational movement of the actuating wheel 12 is transmitted via a coaxial with the actuating wheel 12 and rotatably connected thereto associated sprocket on a roller chain 14, which transmits the rotary motion to a coaxial with the torsion spring shaft 20 and rotatably connected thereto sprocket.

The torsion spring shaft 20 is rotated by a torsion spring 30 helically. The torsion spring 30 is on the one hand rotationally fixed to the torsion spring shaft 20 and on the other hand connected to a stationary fastening element 64 so that a rotation of the Torsionsfederwelle 20 leads to the tension or relaxation of the torsion spring 30. The arrangement is chosen so that during an opening movement of the door leaf, not shown in the drawing, a relaxation of the torsion spring 30 takes place, while in a closing movement and a concomitant rotation of the torsion spring shaft 20, a voltage of the torsion spring 30 takes place.

The slack rope safety according to the invention is also used with particular advantage in gates, in which the rotation of the torsion spring shaft 20 is effected by means of an electric shaft drive.

Coaxial with the torsion spring shaft 20 and rotatably connected thereto serving as a storage device cable drum 40 is disposed, in the course of a closing movement of the door leaf serving as a traction device 42 cable is unwound, which on the other hand is attached to a not shown in the drawing coupling region of the door leaf. This coupling region is usually located in the closed position lower edge of the door leaf. The cable drum 40 has a helical circumferential guide groove 44, in which the pull cable 42 is wound wound during an opening movement of the door leaf. The unwound from the cable drum 40 traction cable 42 is biased by a total of 50 designated guarding device in the cable release direction in which the pull cable 42 is unwound from the cable drum 40. The guard device 50 has a perpendicular to the Torsionsfederwelle 20 extending lever 52 with a parallel to the torsion spring shaft 20 extending contact device 54. The lever 52 rests on the traction cable 42 via the abutment device 54. About the lever 52, the tension cable 42 is acted upon by the biasing force of a tension spring 60. The lever 52 is pushed with its holder 56 on the torsion spring shaft 20 and circulated by the tension spring 60.

How very clear in the Fig. 4b . 5 and 6 can be seen, the tension spring 60 is coupled on the one hand to the lever 52 and on the other hand to a stationary fastener 64, so that from the tension spring 60, a biasing force in the release direction via the abutment means 54 of the lever 52 can be exerted on the pull cable 42. When the pull cable 42 breaks, the lever 52 is rotated about the torsion spring shaft 20 under the action of the tension spring 60. A slack rope safety switch 70 received in a chamber of the holder 56 (see FIG. Fig. 4 . 5 and 6 ) can then be released from a contact surface, so as to effect a shutdown of the Torblattbewegung.

In the in the Fig. 1 to 3 illustrated embodiment of the invention, the lever 52 is rotated over an angle of more than 180 ° of the tension spring 60. Therefore, with this device, a pivoting of the guard device 50 and the lever 52 and therefore a corresponding bias of the pull cable 42 via a pivot angle of 180 ° or more.

How very clear in Fig. 4 can be seen, the abutment means 54 comprises a sleeve 154 having a frustoconical outer boundary surface, which is penetrated by a recess 154 a. The recess 154a serves to receive a fastening pin 156, which on the other hand also passes through the lever 52, so that the abutment device 54 is mounted rotatably with respect to the sleeve axis rotatably on the lever 52 and the movement of the traction cable 42 counteracts only a rolling friction. The tension spring 60 is accommodated in a groove 62 of the lever 52 which runs around the torsion spring shaft axis. In addition, a guide device 66 is provided for guiding the tension spring 60, which may be pivotally fixed to the lever 52. In the embodiment of the invention shown in the drawing, the guide device 66 forms a contact surface for the slack rope fuse switch 70. By the pivotal mounting of the guide means 66 to the lever 52, the mounting of the securing device is made possible under different installation conditions while ensuring the functionality and at the same time ensures a secure guidance of the tension spring 60 at different rotational positions of the lever 52.

According to Fig. 4b ), the slack rope safety switch 70 is received in a chamber of the lever 52, wherein an actuator 74 thereof may protrude from a housing opening. In a triggered by slackening of the pull cable 42 rotational movement of the slack rope safety switch 70 is released from the contact surface formed by the guide means 66 and thus causes the shutdown of the Torblattbewegung.

In another embodiment of the invention, the slack rope safety switch 70 may itself be stationarily arranged, wherein the counter bearing is formed by the lever 52.

How very clear in Fig. 5 it can be seen, the slack rope safety switch 70 is disposed in a chamber of the lever 52. When the lever 52 with the abutment means 54 on the pull cable 42 (not shown) is applied, also the actuating element 74 of the slack rope safety switch 70 abuts the abutment surface formed by a protruding into the chamber web of the guide means 66. The corresponding signal is forwarded via a line 72 to a control device. The line 72 rotates the lever 52 on the tension spring 60 side facing away. It is arranged at an axial distance from the abutment device 54.

As soon as the bias of the tension cable 42 decreases, the lever 52 is rotated about the spring shaft axis and enters the in Fig. 6 shown operating position. In this operating position, the actuating element 74 of the slack rope safety switch 70 is released from the contact surface. Via the line 72, a corresponding signal can then be forwarded to a control device and a shutdown of the gate can be triggered.

Through a comparative analysis of the Fig. 5 and 6 It can be seen that only a slight movement of the line 72 is observed by turning the lever 52 about the near-axis arrangement of the slack rope securing switch 70. This achieves increased operational reliability.

The invention is not limited to the embodiment explained with reference to the drawing. Rather, it is also thought to perform holder and lever in one piece. Instead of a tension spring and a torsion spring can be used to effect the bias of the guard device. A safety device according to the invention can be used in conjunction with overhead doors, roller doors and sectional doors.

LIST OF REFERENCE NUMBERS

10

link chain

12

operating wheel

14

roller chain

20

torsion spring

30

torsion spring

40

cable drum

42

Pulling means / pulling rope

44

guide groove

50

Guardian device

52

lever

54

equipment installation

56

holder

60

mainspring

62

Rope guide groove / groove

64

fastener

66

guide means

70

Slack rope safety switch

72

management

74

actuator

154

shell

154a

recess

156

fastening pin

n

photocell

Claims (18)

Gate with a door leaf which can be moved along a predetermined path between an open position and a closed position and a traction means (42) coupled on the one hand to a coupling region of the door leaf and on the other hand to a weight balancing device supporting an opening movement of the door leaf and to a change of a pretensioning of the traction means (42). An appealing securing device, characterized in that the securing device has an under the action of a biasing means to the traction means (42) can be applied and when removing the tension means for operating a slack rope safety switch (70) designed Wächtereinrichtung (50). Door according to claim 1, characterized in that the traction means (42) is at least partially released from a storage device during a closing movement of the door leaf from the open position into the closed position, and the guard device (50) is connected between the storage device and the coupling area to the traction means (42). can be applied. Door according to one of the preceding claims, characterized in that the storage device comprises a drum, in particular cable drum (40), to which the traction means (42), preferably designed as a traction cable, can be wound during an opening movement of the door leaf. Door according to one of the preceding claims, characterized in that the pretensioning device exerts a force which promotes the release of the traction means (42) from the storage device to the guard device (50) and the traction means (42). Door according to claim 3, characterized in that the jacket surface of the cable drum (40) has a cable guide groove (62) running helically around the drum axis. Door according to one of the preceding claims, characterized in that the counterbalancing device has a helically extending torsion spring (30) extending perpendicular to the door leaf movement direction and rotatably mounted torsion spring shaft (20), which is tensioned during a closing movement of the door leaf. Door according to claim 5, characterized in that the storage device is non-rotatably connected to the Torsionsfederwelle (20). Door according to one of claims 3 to 7, characterized in that the drum axis of the cable drum (40) is arranged colinearly to the shaft axis of the torsion spring shaft (20). Door according to one of the preceding claims, characterized in that the guard device (50) has a lever (52) rotatably mounted with respect to the drum axis. A door according to claim 9, characterized in that the slack rope safety switch (70) is at least partially disposed in a chamber of the lever (52). Door according to claim 9 or 10, characterized in that the guard device (50) at least partially revolves the drum axis and the lever (52) preferably in the cable release direction, in which the traction cable (42) from the cable drum (40) can be unwound against the traction cable (42) urging spring, esp. Zugfeder (60). Door according to one of claims 9 to 11, characterized in that the lever (52) is attached to a holder (56) pushed onto the torsion spring shaft (20). Door according to claim 12, characterized in that the holder (56) has a torsion spring shaft (20) at least partially encircling and for receiving the tension spring (60) designed guide groove (44). Door according to one of the preceding claims, characterized by a drive device designed to move the door leaf. Door according to one of the preceding claims, characterized in that the holder (56) and / or the lever (52) designed for operating or releasing the slack rope safety switch (70) actuation switch and / or designed for application to a slack rope safety switch (70) Operating portion has. Door according to one of the preceding claims, characterized by a light barrier arrangement having at least one, preferably two, three or more, transversely, in particular vertically, and / or approximately parallel to the predetermined path oriented light barrier (s) and in response to an interruption and / or releasing a photocell to stop the Torblattbewegung operable control device. Door according to one of the preceding claims, characterized in that the door leaf has a plurality of door leaf elements which are arranged one behind the other in the direction of door leaf movement and articulated with respect to each other perpendicular to the door leaf movement direction. Door according to one of the preceding claims, characterized by a guide device (66) for guiding the Torblattbewegung between the open position, in which the door leaf is arranged above the head approximately in a horizontal plane, and the closed position, in which it is arranged approximately in a vertical plane.

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