EP0890010A1 - Door with traction cable system - Google Patents

Abstract

A door has a door leaf (10) which may be moved overhead between an open and closed position and which is connected by means of a traction cable system to a weight-balancing device, driving motor or another similar power source. The traction cable system has at least one cable unit (21) secured at one end to the door leaf and fixed at the other end. In order to dispense with catching means and ensure a longer service life, at least one of the cable units (21) has two cables (21', 21'') loaded approximately in parallel and combined by their associated ends each to a building element. At least one of said building elements is designed as a cable tension compensating device.

Description

 GATE WITH A TOW ROPE DEVICE

The invention relates to a door with a door leaf movably guided between the closed and open positions, for example a lift gate, overhead sectional door, roller door, tilting or swinging gate, which is connected by means of a pull cable device to a weight compensation device, motor drive device or similar power source, which pull cable device has at least one Rope unit includes one end connected to the door leaf and the other end is held stationary.

Door leaves of gates of the type in question are often provided with a traction cable device, via which forces are introduced into the door leaf, such as forces of a motor drive unit of both driving and braking type, as well as forces which compensate for the weight of the door leaf along its path of movement . The latter may be necessary in order to keep the movement forces to be initiated by hand or by motor and ideally to leave the door leaf at every point in the movement path. The majority of the door types mentioned change their center of gravity along the movement path with a horizontal sliding component, others - lifting gate - do not, but require a change in the lever arm due to the force of a weight compensation direction working with springs, which force decreases in the opening direction, which can be accomplished by means of a conical cable drum design.

Rope devices of the type in question thus act on the end facing away from the door leaf on weights, torsion spring shafts, drive shafts or spring devices, the latter of which are held stationary at the other end and in particular work with coil springs.

Rope devices that only work with one rope for each force application point, if the rope breaks, impair the door leaf guidance due to the risk of chucking, but in particular cause the door to fall, which is why so-called Catching devices for the door leaf are unavoidable and are prescribed by the regulations of many countries. You can try to counter this risk of falling by using two parallel ropes so that if one rope breaks, the other still holds the door leaf. If the load is distributed unevenly, which can occur during the assembly of the door and / or occur during operation, one of the ropes is subjected to greater stress and therefore suffers a correspondingly higher risk of tearing.

The invention has for its object to provide a gate of the type mentioned with a pull rope device that makes a safety device unnecessary and has a longer life.

This is achieved according to the invention in that the or at least one of the rope units contains two ropes which are loaded approximately in parallel and are each combined with their mutually associated ends on one component, of which two components at least one is designed as a rope tension compensation device.

Such a weight compensation device could be designed in the form of a circular disk which has guide rollers for the two ropes on its peripheral end face, is rotatably held in a stationary manner about a central axis and on the end face of which the two ropes run on opposite disk sides. In order to keep the other on the sheave load-bearing if one of the ropes breaks, not only must the ends of the ropes be tension-loaded on the sheave, the sheave must moreover be limited to a certain maximum twist angle by stops.

In a preferred embodiment, the preferably parallel running two ropes are held on a seesaw as a compensating device which is pivotally mounted in a central region about a fixed axis and which has a fixing formation for one of the rope ends on both sides of the axis, preferably designed in the manner of a suspension formation such as Determining the ground tension of a thickened rope end in a deepening of the fastening formation in the seesaw extending in the direction of the rope.

In a preferred embodiment, the fixing formations are provided on the thickened rope ends inserted in the direction of the stripping ropes and located in front of the axis of the seesaw. This design provides a relatively large compensation path for the ropes. If the fixing formations are arranged perpendicular to the direction of the stripping ropes, seen in a plane with the pivot point of the seesaw, or viewed from the rope ends in this direction behind the pivot point, less derailment paths are obtained. With increasing The width of the rocker increases the compensation path, but this requires corresponding installation space, which is not always available, for example when arranged in the side areas of running rails for sectional gates.

The pivoting angle of the rocker is limited, preferably by abutment on a shoulder of a stationary component on which the axis of the rocker is fixed and which has a shoulder rising up to the side of the rocker, on which the rocker with its area or the designations depending on the pivoting direction but strikes their area distant from the fixing training seen over the axis.

The ropes, which form a rope unit in parallel arrangement and parallel loading, can run directly between the door leaf and the fixed bracket, in other cases a deflection in the sense of an angular change in the course is required for structural reasons, and finally the ropes can be guided over pulleys, which in the manner of a loose roller, for example, halve the deformation path of a helical spring device held thereon in relation to the movement distance of the rope attack on the door leaf. Such a deflection roller for the ropes can be designed as a pair of rollers or as a double-grooved roller.

In a further preferred embodiment, the fixed mounting of the rope ends is variable in length in the direction of the ropes striving from them, preferably in the form of an opening-free line of a corresponding component extending in this direction, in particular a running rail of a sectional ceiling door, in the openings of which the axis of the seesaw can optionally be fixed can. Another setting option results from the fact that the building-side fixing of the connected spring unit can be adjusted in length in the spring axis direction, for example in the case of a sectional ceiling door by optional use in a punch hole of a row of such punch holes extending in the longitudinal direction of the guide rail concerned. For this purpose, a corresponding anchor is provided with two struts in the longitudinal direction of the spring, in opposite directions, engaging in the punchings, the one of which faces away from the spring is longer than the other, so that when inserted, the longer flag is first inserted into a punched hole and moved against the direction of the spring force up to the stop, the second shorter flag can be inserted into an adjacent punch hole or a further one, whereupon after releasing the anchor, it is moved under spring force until the shorter flag is knocked off at the assigned punch hole edge, the longer flag still being attached to the one assigned to it Support the punch hole edge against being pulled out of the punch hole. A coil spring unit, it can also be provided in parallel, can not only be equipped with springs that are subjected to tension, but it can also be formed from compression coil springs or have both tension-loaded and compression-loaded springs. It is then only a corresponding guide for the compression spring and a corresponding rerouting of the ropes required. Safety can serve to design the spring units in such a way that they consist of at least two helical springs operated in parallel, the inner spring of which has a smaller outer spiral diameter than the inner spiral diameter of the outer spring, which are arranged coaxially one inside the other and the other, and one of them Spring seen in the same longitudinal direction of the spring, rotating to the left and the respective neighboring spring is wound to the right, so that the coil of adjacent springs cross. In this way, springs associated with each other in a space-saving manner prevent each spring fragments from being thrown off if a spring breaks.

The invention is explained in more detail with reference to the exemplary embodiment shown in the drawing, from which further advantageous features of the invention can be derived. Show it

FIG. 1 shows a perspective view of the inside of a ceiling link door leaf with the running rail arrangement and indicated weight compensation device;

FIG. 2 shows a side view and a top view of the horizontal and lowered or arcuate course of the running track device as seen from the door leaf or in plan view;

FIG. 3 shows an overview of different configurations of one or more spring units connected in parallel, each consisting of two coaxial springs, and a schematic partial section through this spring arrangement;

Figure 4 is an enlarged partial view of one of the versions

Figure 3 in side view and partially sectioned top view;

FIG. 5 perspective individual representations from partial areas of the figure

1 in an enlarged view;

Figure 6 is an enlarged plan view of a rocker mounted on a support member. 1 has a door leaf made up of a series of panels 10, the top 10 'and bottom 10 "of which differ from the other panels in the closed position. With the exception of the top panel 10', the other panels are known in the manner of Rollers 11 are guided in so-called first runners, each consisting of a horizontal section 12, an arcuate section 12 'and a vertical section on both sides of the door leaf, while the top panel 10' with rollers 11 arranged on both sides in its upper edge region 13 in second runners, each of a horizontal section 14, a section 14 'which is lowered towards the door opening and is received in an angled section 14''.

This version with second tracks is also known. The gate is provided with a weight compensation device 15, which consists of helical tension springs and associated cable pulls, as is also known in principle, such that a helical tension spring extends parallel to each horizontal section of the running rails, which is held inside the building and is connected to the door leaf and connected to a deflection roller is around which a rope is guided, one end of which is fixed in the lower edge region of the lowermost panel and the other end - in the broader sense on frame-fixed parts. The present exemplary embodiment shows the arrangement of a tension spring device on each of the side regions of the horizontal running rail sections 12 and 14 facing away from one another in such a way that this tension spring device practically does not take up the space above and below the assigned running rails. The lateral space requirement of the coil tension spring devices is kept small in that they consist of coil tension spring units 16, of which - in adaptation to the power requirement or the door leaf weight and for fall protection in the event of spring breakage - preferably several are arranged parallel to one another. Each spring unit consists of two coaxially arranged inside or around each other individual coil springs, the inner 17 and their associated outer 18 are seen in one and the same Federachsrichtung in different directions of rotation, so that when viewed perpendicular to the Federachsrichtung the coil of the two springs under cross acute angles, as can be seen more clearly from FIGS. 3 and 4.

The tension spring devices, each consisting of one or more spring units 16 connected in parallel, per horizontal track section are held in the area fixed to the building, namely in the end area of the horizontal track 12, 14 facing away from the door opening - FIG. 5 - and point to it summarized gate opening-side end a deflection roller in the form of a pair of rollers 25 or a roller with two parallel guide grooves, over which two ropes 21 are guided, which run in parallel at their respective ends practically at the same facilities, namely on the one hand at a common fixing point 22 known design in the lower edge area 23 of the lowest panel 10 ″ in the closed position and fixed in the end area of the horizontal running rails 12, 14 near the opening of the door. The ropes between the pair of deflection rollers 25 and the fixing point 22 on the door leaf side are each guided over a reversing roller 24 in order to change the position the fixing point with the movement of the door leaf compared to the constant spring axis direction of the spring units.

To clarify the arrangement of the spring units 16 in spatial association with the horizontal running rail sections 12, 14, reference is made to FIG. 2, in which the spring units of two coaxially arranged coil springs of opposite helix and the course of the guidance of the two parallel cables per spring device are shown schematically. From these figures - schematic side view in the middle - the shape or spatial assignment between the horizontal track sections 14 and 15 and a helical spring device made of two spring units 16 arranged one below the other can be seen. The display space obtained by interrupting the side view in the horizontal running rail area shows a section perpendicular to the longitudinal direction of the running rails. Furthermore, FIG. 2 shows a side view of a punch hole row 40 in the end region of the horizontal running rail section 14 inside the building, which punched hole cooperates with an anchor 37 fastened to the end of the spring units 16 inside the building, as will be explained with reference to FIG. 5.

FIG. 3 shows, in a kind of exploded view, three embodiments of tension spring devices as they are arranged on the side regions of the horizontal running rail sections 12 and 14, in different versions, namely with a single spring unit 16, with two and with three in parallel with one another arranged spring units 16, each of which consists of two coaxially arranged springs 17 and 18, the longitudinal central region of which is shown shortened. Carriers 30 with roller holders 35, 36 and anchors 37 with flags 38, 39 are shown on both sides of the respective design with one, two or three spring units. The number of spring units 16 is determined by a corresponding number of holding elements 31, 31 ', 31 "are adapted to how this shows the figure easily. A corresponding top view is shown under the different versions in side view. The connections of the springs of the spring units to the holding elements will be explained in more detail in connection with FIG. 4.

Figure 3 below shows a section of the longitudinal profile of a spring unit made of two coaxial springs, namely an inner spring 17 and an outer spring 18 surrounding it. As indicated, the two springs 17 and 18 are in the same direction of the spring axis 29 in the opposite direction wrapped around, ie the spring coil 20 of the two springs 17 and 18 intersect at an acute angle. The inner spring 17 has a smaller outer diameter Da than the inner diameter Di of the outer spring 18 is large. As a result, the springs can move independently of one another without spiral sections of one spring engaging at intervals between adjacent spiral sections of the other spring, although the diameter difference Di - Da can be kept small. In order to reduce frictional stress between adjacent areas of the spring coils 20, a low-friction screen can be provided in these sections, for example by trough-shaped strapping of the coil limited in cross-section to the adjacent areas of the coil or by wrapping it from a plastic that is insensitive to frictional stress.

FIG. 4 shows, using the example of the end region of a helical tension spring device comprising three spring units 16, which is assigned to the respective deflection roller pair 25, the connection of the springs of these units via a summarizing support 30. The flat support 30 is provided with three holding elements 31, 31 'and 31 "striving towards the spring units. provided, which lie in one plane and each have a narrower holding section 32 and a wider holding section 33 located between the latter and the carrier 30. As can be seen from both the side view and the top view in Figure 4, the outer spring 18 of the spring unit 16 in question is which has a larger diameter than the inner spring 17, pushed onto the wider holding section 33 in the vicinity of the carrier, such that the pushed-on helical area 19 engages behind barb-shaped projections 34 on the flanks 47 of the holding section and can thus be pushed on n is secured against being pulled off. In the same way, the inner spring 17 of smaller diameter is pushed out and secured on the narrower holding section 32 of the associated holding element which projects further against it, the flank shape rotated by 180 ° between the two sections 32 and 33 showing protrusions 34 and depressions 48, that the outer spring 18 and the inner spring 17 have opposite winding directions.

On the support area facing away from the holding elements 31... A roll holder 35 is formed from a cheek bearing integral with the support 30 and a bearing counterpart 36, the latter being connected to the support 30 by hanging, as the top view shows; the two parts 35 and 36 are held together by a hollow rivet, which at the same time represents the axis for the deflection roller designed as a deflection roller pair 25.

FIG. 5 shows a series of individual representations from FIG. 1 in an enlarged representation, namely FIG. 5a the formation of the variable-length fixing on the building side of the helical tension spring device symbolically represented by a spring from one or more spring units 16 arranged parallel to one another, with an anchor 37 corresponding to their end on the inside of the building the representation in Figure 3 is connected. The anchor 37 can optionally be inserted into one of the holes in a row of punched holes 40, specifically with a flag 39 striving in the direction of the spring, which, when inserted into a punched hole under the action of the spring 16, engages in a rear grip with the wall of the horizontal running rail section 14 . A flag 38, which struts in the opposite direction of the flag 39 from the spring, is provided with a bore which coincides with a stamped bore adjacent to the punched bore penetrated by the first flag 39 when the rear engagement process of the first flag 38 has taken place. A safety bolt is guided through this punched bore and the bore in the lug 38; these processes are shown in Figures 5a, 5b and 5c. An anchor bracket 46 formed on this serves to handle the anchor 37 in the manner described. FIG. 5d shows the stationary holding of the ends of the two parallel cables 21 on each door leaf side on the door opening side. The thickened rope ends 44 are accommodated in suspension formations 43, preferably in the manner of a bouquet closure, in which position they are held under the force of the spring units acting on the associated deflection roller 25. These designed as attachments are provided on a rocker 41 which is pivotable about an axis 42, so that differences in length between the two cables 21 are compensated by pivoting the rocker with the result of equal load distribution. In the interest of a large compensation possibility, the fixing recesses 43 are provided on both sides of the axis 42 further apart from the deflecting roller pair 25 than the axis 42. In the sense of a length-variable design of this fixed holder, the rocker 41 is in an opening of an opening row 45 extending in the longitudinal direction of the running rail section 14 can optionally be used, so that adjustments with regard to the spring force to be set, the adaptation to given cable lengths and to age-dependent changes in these values are possible.

The remaining FIGS. 5e and 5f show the arrangement of the loop-shaped other ends of the cables 21 at a fixing point 22 in the lower edge area 23 of the lowermost panel 10 ", as well as the position and function of the converting roller 24 in the area of the track section 14 and 14 'close to the building.

It can be seen from the top view shown in FIG. 6 that the rocker 41 can pivot about the axis 42 when one of the cables 21 'or 21 "breaks, until it strikes a shoulder 49 of a support part which carries the axis 42 and is held in a fixed position the possible swivel angle of the rocker in both swivel directions is necessarily limited in order to allow the remaining rope to take up the load. The swivel angle determines the recordable length difference between the two ropes 21 'and 21 "; it should not be too large so that the kinetic load component in the remaining one rope does not become too large if the other rope breaks.

10 F 14.632 fl / hie

REFERENCE SIGN LIST

10, 10 ', 10 "door leaf with top and bottom panel

11 rolls

12. 12 ', 12 "first runners - horizontal, arcuate, vertical section

13 Top edge area of the top panel

14. 14 ', 14 "second tracks - horizontal, lowered, angled sections

15 weight compensation device

16 Tension spring unit = spring unit

17 inner spring

18 outer spring

19 slipped helical area

20 spring coil

21 rope unit

21 'rope

21 "rope

22 setpoints

23 lower edge area of the lower panel

24 conversion rollers

25 pairs of pulleys

26 fixed mounting of the ropes

27 side areas of the horizontal track sections

28 definition of the spring units on the building side

29 spring axle

30 carriers

31, 31 ', 31 "holding elements

32 holding sections - narrower

33 holding sections - wider

34 tabs

35 roll holder

36 reel seat - counterpart

37 anchors

38 longer flag

39 shorter flag

40 row of punch holes Seesaw

axis

Fixing training = hanging training thickened rope ends

Row of openings

Suspension bracket

Flanks

Indentations

shoulder

Inner spiral diameter

Outer spiral diameter

Claims

Expectations 1. Door with a door leaf (10) which is movably guided between the closed and open positions, for example overhead door, overhead sectional door, roller door, tilting or swinging door, which is operated by means of a pulling cable device with a weight compensation device (15), motorized drive device or the like Power source is connected, which pull rope device comprises at least one rope unit (21) which is connected at one end to the door leaf and the other end is held stationary, characterized in that the or at least one of the rope units (21) loaded two approximately parallel, each with their mutually associated ends on a component comprises ropes (21 ', 21 "), of which two components at least one (43) is designed as a rope tension compensation device (41-43). 2. Gate according to claim 1, characterized in that the two cables (21 ', 21 ") of the cable unit (21) between their respective common components (22, 43) held ends are aligned approximately parallel. 3. Gate according to claim 1 or 2, characterized in that the cable tension compensation device (41-43) is designed as a rocker (41) which is pivotally mounted in a central region about a stationary axis (42) and on both sides of the axis (42) each have a fixing formation (43) for one of the rope ends, preferably designed in the manner of a suspension formation such as a Bowden cable fixing supply of a thickened rope end (44) into a recess in the fixing formation (43) extending in the rope direction in the rocker (41). 4. Gate according to claim 3, characterized in that the Festiegeausbildung (43) from the thickened rope ends (44) inserted in this in the direction of the stripping ropes (21 ', 21 ") seen in front of the axis (42) of the rocker (41 ) located on this are provided. 5. Gate according to claim 3 or 4, characterized in that the pivoting angle of the rocker (41) is limited, preferably by a stop on a shoulder (49) of the axis (42) holding the stationary mounting part. 6. Gate according to one of claims 1 to 5, characterized in that the ropes (21 ', 21 ") in the course of their course over deflecting rollers (25) are looped, in training as a pair of rollers or double-grooved role. 7. Gate according to claim 6, characterized in that the deflection rollers (25) with their rotary axis bearing to one end of one or more helical spring units (16) are connected to a weight compensation device (15), the other ends of which are held stationary. 8. Gate according to claim 7, characterized in that the fixed holder (26) of the rope ends variable in length in the spring axis direction, in particular on the associated running rail (14), preferably in the form of an opening row extending in the rail longitudinal direction (45), optionally for optional fixing the axis (42) of the rocker (41). 9. Gate according to claim 7 or 8, characterized in that the building-side fixation (28) of the spring units (16) in the spring axis direction is variable in length, in particular on the respectively associated running rail (14), preferably in the form of a punch hole row extending in the longitudinal direction of the rail ( 40), into which a spring-side armature (37) can be inserted, preferably with two flags (38, 39) striving from each other in the spring axis direction, the lugs of which are facing away from the spring unit (16) are longer than the other and / or those of the spring unit ( 16) facing away from a bore. 10. Gate according to one of claims 1 to 6, characterized in that the coil spring unit has one or more compression springs. 11. Gate according to one of claims 7 to 10, characterized in that the or at least one of the coil spring units (16) consists of at least two paral¬ lel operated operated coil springs (17, 18), the respective inner spring (17) having a smaller coil outer diameter (Da) as the inner coil diameter (Di) of the respective outer spring (18), which are arranged coaxially one inside the other or each other and whose one spring is seen in the same longitudinal direction of the spring, rotating clockwise and the respective adjacent spring is rotating clockwise, so that the helix (20) of adjacent springs (17, 18) cross.