EP0309511A1

EP0309511A1 - Gate, in particular a motor-driven industrial gate

Info

Publication number: EP0309511A1
Application number: EP88902791A
Authority: EP
Inventors: Gabrijel Rejc
Original assignee: EFAFLEX Transport- und Lagertechnik GmbH
Current assignee: EFAFLEX Transport- und Lagertechnik GmbH
Priority date: 1987-03-26
Filing date: 1988-03-23
Publication date: 1989-04-05
Also published as: WO1988007618A1; YU58888A; DE3709884A1

Abstract

Dans la porte décrite, l'ouverture (6) est recouverte dans la position fermée par un écran protecteur lamellaire (2, 2') formé de lamelles (8) rigides et mutuellement inclinables qui, dans la position ouverte, se trouvent en rouleau (12) dans une région marginale de l'ouverture de porte (6). Ladite porte est caractérisée en ce que les lamelles (8) s'étendent au-dessus de la hauteur de l'ouverture de porte, en ce que le rouleau (12) est situé au niveau d'un bord latéral de l'ouverture de porte, et en ce que l'écran protecteur lamellaire (2, 2') est guidé et supporté dans la région du bord supérieur ou inférieur de l'ouverture de porte. La porte roulante peut ainsi être ouverte rapidement, et lors de l'ouverture, la hauteur totale de l'ouverture de porte (6) est immédiatement dégagée. En outre, l'agencement latéral du rouleau vertical permet une construction compacte.In the door described, the opening (6) is covered in the closed position by a lamellar protective screen (2, 2') formed of rigid and mutually tiltable slats (8) which, in the open position, are in a roll ( 12) in a marginal region of the door opening (6). Said door is characterized in that the slats (8) extend above the height of the door opening, in that the roller (12) is located at a side edge of the door opening. door, and in that the lamellar protective screen (2, 2') is guided and supported in the region of the upper or lower edge of the door opening. The rolling door can thus be opened quickly, and when opening, the total height of the door opening (6) is immediately cleared. Additionally, the lateral arrangement of the vertical roller allows for compact construction.

Description

Tori in particular motor-driven industrial door

The invention relates to a door, in particular a motor-driven industrial door, according to the preamble of claim 1.

Such generic industrial doors are used as so-called roller doors. Such roller doors have a number of advantages, such as a clean, complete closure of the door opening, which optimally protects against heat losses, drafts, unauthorized entry, etc. The disadvantage, however, is that such roller shutters can only be moved at very low speed, partly because they have to be pulled up despite the considerable weight and, on the other hand, tend to buckle and tilt if the downward movement is too rapid. Therefore, such roller shutters are not suitable for bringing about a closure of the door opening when there is considerable traffic through the door opening. Therefore, such roller doors are often used in addition to so-called high-speed doors of a suitable construction, with the daytime

High-speed doors enable the climatic closure of the door opening and a comfortable passage, while at night the roller doors ensure permanent closure even against unauthorized entry.

An example of a generic roller door can be seen from DE-GM 85 32 601. In this case, at least the profile strips or slats forming the lower end of the lamellar armor are additionally connected to one another by at least one leaf spring band running perpendicularly to them, in order to stiffen against buckling and thus increase the permissible lowering speed achieve. The speed increase that can be achieved is too low.

Another disadvantage of such roller shutters is that they cover the entire width in the area of the upper one

The edge of the door opening must be supported on a shaft in order to prevent the profile strips or slats from sagging too much, especially when the door width is large. The windings of the lamellar armor lie against one another under strong pressure and contract further in the course of the movement of the lamellar armor in accordance with the forces which occur, so that strong friction occurs under pressure between the windings. As a result, the surfaces of the slats are exposed to heavy loads and become unsightly over time, especially if window openings or similar surfaces with particularly sensitive surfaces are provided in the gate.

A further disadvantage is that a safety gear is required for such rolling gates for safety reasons, since with them, for example if the drive shaft breaks, there is the possibility that the slatted armor will be pulled down by its own weight at high speed and thereby endanger people and things considerably . In addition, it is considered disadvantageous in practice that when the gate is opened, the entire height of the gate opening is not immediately available for passage, so that there are waiting times, since most vehicles have a much greater overall height than width.

In contrast, the invention has for its object to provide a door with the essential advantages of conventional roller doors, but which can also be designed for high-speed properties and immediately opens the entire height of the door opening when opened, so that it is suitable for frequent passages with normally closed door . This object is achieved by the characterizing features of claim 1.

The fact that the slats are arranged in the vertical direction of the door opening and form a laterally standing wrap, the entire passage height is immediately released when the slat armor is opened and an early passage is thus possible. Furthermore, the winding is not subjected to gravity transversely to its longitudinal axis. Rather, the slat armor can be supported in the manner of a sliding gate hanging on its upper edge, for example by conventional guide roller constructions, and is guided on its lower edge, so that when the slat armor moves, only acceleration and friction forces, but not gravity, have to be overcome. As a result of this and due to the good upper and lower guiding options, the door can be designed with high-speed properties and can thus serve as a permanent, optimal closure of the door opening similar to a roller door, even if frequent traffic through the door opening is to be expected.

Conventional sliding gates with rigid door leaves require a correspondingly large space on the side to accommodate the door leaf in the open position of the door, which is perceived as extremely disadvantageous not only in confined spaces. So-called rotary gates are also known, in which the wings of the sliding gate consist of segments which can be angled relative to one another and which can be deflected in a large arc of 90 °, so that the required lateral space is at the expense of one

Space requirements in the direction of flow is reduced, but this only shifts the space requirements in another direction. From DE-A-34 01 042 it is already known to use tongue-like or apron-like gate leaves which move into the door opening from the side and which also have fast-running properties. Here, however, the tried and tested design principles of roller doors are not used, but each door wing consists of two cloth-like plastic sheets with a front end construction. The plastic sheets extend from the strip-shaped end construction to the area of the side wall of the gate opening, where each sheet is individually wound on a winding shaft. Such a door may be an alternative to the current high-speed elastic doors, but it cannot do the function of a roller shutter made of rigid profile strips or slats, because the plastic sheets obviously lack the suitability for this. The good possibility of winding elastic plastic webs is, however, the main idea of this design principle. A relatively good thermal insulation of the door material itself is achieved by the double arrangement of plastic sheets with an air cushion arranged between them, but this is again significantly impaired by the fact that there is no floor-side guidance and therefore a more or less wide floor gap must remain depending on the unevenness of the floor. Sealing by means of brushes or the like attached to the lower edge of the plastic sheets is difficult because the brushes do not allow the unobstructed formation of a clean winding in view of the low thickness of the plastic sheets. There is also no thermal insulation of the gap towards the upper edge of the door opening. Although the plastic webs in the winding are not in contact with each other under strong gravity, the plastic surface is relatively sensitive, particularly in transparent window areas in the case of such flexible plastic webs, so that even with lower frictional forces between the windings directly adjacent to one another in the winding Contamination of dirt and dust as well as damage are to be expected.

A clean, faster and tilt-free running of the slat armor in the closing direction is guaranteed according to claim 5 in that the drive engages pulling in the area of the free edge of the slat armor in the closing direction.

In a particularly preferred embodiment of the invention, it is provided according to claim 3 that the windings of the lamellar armor do not touch each other and are guided at a distance from each other in upper and lower guide profiles. This certainly precludes any damage from mutual contact and friction.

in a further embodiment of the invention it is provided according to claim 4 that the windings between the guide profiles are exposed, ie are not wound on an inner winding shaft. Due to the rigidity of the lamellae on the one hand and the absence of the action of gravity transversely to the axis of the winding on the other hand, such guidance in the central region of the winding can be omitted with regard to the upper and lower guide profiles. This creates a cavity there that can be chosen to be relatively large without the winding diameter therefore becoming excessively large. Therefore, drive units such as, in particular, an electric motor can be arranged in the free interior of the winding, so that, despite a relatively larger diameter of the innermost winding, an overall extremely space-saving design results.

If the winding is arranged in a hinged box according to claim 5, access to the electric motor or the like inside the winding is particularly facilitated. When the gate is closed there is no wrap act so that the electric motor is completely freely accessible after opening the box and is available for maintenance and repair work.

A particularly tight closure of the door opening is obtained if, according to claim 6, the slats of the slat armor are connected to one another via sealing bands such as spring steel bands, steel-reinforced rubber bands or the like. As a result, an articulated connection of the slats, which is susceptible to interference and susceptible to noise, can be eliminated, the relatively large inner diameter of the inner winding of the winding avoiding an extremely strong angling. In particular, if, according to claim 7, the bands are firmly clamped laterally in the slats, the result is an absolutely airtight and extremely stable construction with good security against unauthorized access, with no attachment options for tools or the like.

If, according to claim 8, a bottom band arranged on the bottom edge of the slat armor is provided, which engages in a narrow slot of a guide rail, a deflection of the slat armor transverse to the direction of movement, for example as a result of wind pressure, is practically completely avoided and at the same time good coverage of the Floor gap reached.

To reduce the frictional forces while increasing the guiding accuracy, guide rollers of the lamellar armor are usually provided, which run in the bottom-side guide rail, as is known per se in sliding gates. In conventional sliding gates, however, the guide rollers are mounted on corresponding retaining bolts on the underside of the gate segment, so that the slot in the guide rail must have a correspondingly large width. A large width of the slot of the guide rail is ins Particularly disadvantageous in industry in particular for driving over the slot, in particular if, for example, pallet trucks with a small wheel diameter of 100 mm or even less are used, which should not feel that the slot is being driven over if possible. According to claim 9 it is therefore provided in a particularly preferred embodiment of the invention that the guide rollers are mounted on the end tape, which is fastened in the bottom of the lamellar armor and passes through the slot, so that it can be made extremely narrow. At the same time the occurrence of increased frictional forces due to sliding friction between the end band and the guide profile is reliably avoided. With regard to the risk of contamination of the bottom-side guide rail even with a small internal width of the slot, it is particularly advantageous if, according to claim 10, the weight support of the lamellar armor is carried out via idler rollers which are arranged on its upper edge and run in a conventional carrier and guide rail. Since the running surfaces of such an upper support and guide rail hardly pollute to any appreciable extent, the slat armor runs smoothly and evenly when the door is opened and closed. A particular additional advantage is that this type of weight support allows the guide rollers to be arranged vertically on the bottom end band of the lamellar armor, since they only need to absorb horizontal forces. Since practically no dirt collects on the vertical running surfaces of the guide rail, a light and uniform guidance of the bottom end band and thus of the lamellar armor is made possible, through which the end band is guided centrally in the slot and sliding friction between the end band and the guide rail is avoided. A hindrance to the free running of the guide rollers by dirt accumulating on the bottom of the guide rail is avoided in that according to claim 12 there is a vertical distance between the lower edge of the guide rollers and the bottom of the guide rail, so that a pocket for receiving dirt that has penetrated is formed.

In view of the particularly small clear width of the slot in the guide rail embedded in the floor, cleaning the guide rail is complex since cleaning tools can also penetrate poorly. It is therefore provided according to claim 13 that the narrow slot in the areas of the guide rail released by the guide rollers is covered by a spring element in order to minimize the entry of dirt, for example when a vehicle drives over it. The spring element can be elastically displaceable by the rollers and / or the spring steel strip on the underside of the lamellar armor, so that the slot is automatically closed when the lamellar armor is moved into the open position and automatically when the lamellar armor is retracted into the closed position for the guide rollers and of the spring steel strip is opened. In a particularly preferred embodiment, the spring element in the region of its free end has a projection which engages in the slot when it is covered. The upper surface of the projection then advantageously connects the two upper edges of the slot almost seamlessly, so that a practically continuous surface is created. This largely avoids the formation of a groove in which dirt could accumulate and fall into the guide rail if the spring element is pushed to the side by the guide rollers or the end band when the door opening is closed.

In addition to the simultaneous use of a door according to the invention, this type of bottom-side guidance is also important for use with conventional ones Sliding or rotary doors. For training one

Gates with horizontally running slat armor result in the measures of claims 15 and 16 a particularly clean and simple guidance of the slat armor.

For larger door widths in particular, it is preferred according to claim 17 to provide a slat armor on both sides, as is already known in principle from DE-OS 34 01 045. This has the advantage that the

The opening speed with respect to the passage width of the door is twice as large as the speed of movement of each slat armor, and the passage opening is first opened in the middle of the door opening, so that particularly rapid passage is possible.

Furthermore, there is the possibility of driving the two lamella armatures independently of one another and controlling their movement. This makes a control possible, which ensures that the door opening is only released in the width required for a passage or a passage and thus an unnecessarily wide opening over the entire door width is avoided, which would favor the entry of drafts and dust.

Since the opening and closing of the invention

Frictional forces occurring due to the smooth running of the slat armor are low, the gate can be operated by hand even without a motor drive.

Further details, features and advantages of the invention result from the following description of an embodiment with reference to the drawing.

It shows

Figure 1 is a perspective view of a gate according to the invention in the closed position. Fig. 2 is a sectional view taken along the line II-II in Fig. 1i

Fig. 3 is a partial sectional view along the line III-III. in Fig. 2i

Fig. 4 is a sectional view taken along the line IV-IV in Fig. 3i

Fig. 5 shows a detail of Fig. 1 in an enlarged view

Fig. 6a is a sectional view of the bottom region of the gate in the closed position to illustrate the guide device

Fig. 6b is a sectional view of the bottom region of the gate in the open position and

Fig. 7 shows a further sectional view of the bottom region of the gate in the open position.

As illustrated in FIG. 1, the illustrated embodiment of a door according to the invention has two lamella armor 2, 2 ', the free edges 4, 4' of which, in the closed position shown, lie against one another in the middle of a door opening 6, so that the door opening 6 is completely covered. The following description relates to the lamellar armor 2 on the left in the figure, but also applies analogously to the lamellar armor 2 'on the right in the figure. The slat armor 2 consists of vertically arranged slats 8 which can be angled relative to one another. In order to release the gate opening 6, the slat armor 2 is moved in the direction pointing to the left in the figure and opened into a winding 13 within a laterally arranged box 11 which can be hinged 10 wrap t (Fi g. 2, 3).

The section shown in FIG. 2 along the line II-II of FIG. 1 shows the spiral course of a lower guide profile 14 in which guide rollers 16 run, which are connected to the slats 8 via brackets 18 and an end band 20 (FIG. 6a ). As the lamellar armor 2 shown wound in section illustrates, the spiral course of the lower guide profile 14 is selected so that when the lamellar armor 2 is wound up or unwound, contact between the lamellas 8 is excluded. An electric motor 22 is arranged in the space remaining inside the winding 12 (FIG. 3) and is freely accessible when the

Lamellar armor 2 is in the closed position, ie there is no winding, and the hinged box 11 is open. As schematically indicated by the dash-dotted lines, the electric motor 22 arranged above the cutting plane is connected to a drive roller 26 via a drive belt 24. A second, concentric drive roller 28 is connected to this drive roller 26, in which a V-belt 30 runs (FIG. 3), which is connected to the lamellar armor 2 via a driver 35 and a connecting part 34 (FIG. 4). If the shaft of the electric motor 22, whose direction of rotation is reversible, rotates clockwise in the figure, the concentric drive rollers 26, 28 are also rotated clockwise. Accordingly, the attached to the V-belt 30

Driver 32 and thus also the slat armor 2 in the figure to the right, that is, moved in the closing direction of the gate.

As shown in the partial section in FIG. 3 along the line III-III according to FIG. 2, the motor 22 is fastened vertically in the interior of the winding 13 to a vertically supported bearing plate 36 and protrudes the drive belt 24 and the drive rollers 26, 28 with the V-belt 30 in connection. Upper guide profiles 38 are further fastened to the bearing plate 3b, which have a course corresponding to the spiral course of the lower guide profiles 14 and connect to a profile bar 39 (FIG. 4) arranged in the region of the gate opening 6. In the upper guide profiles 38 and the profile strip 39 run guide rollers 40 arranged with a vertical axis and support rollers 42 arranged with a horizontal axis. The guide rollers 40 and the support rollers 42 are attached to the connecting parts 34. At the lower ends of the connecting parts 34, the upper edges of the slats 8 are attached. The lower area of the slats 8 is covered by the closed, hinged box 11.

As illustrated by the section shown in FIG. 4 along the line IV-IV in FIG. 3, the driver 33 is fastened with its upper end to the V-belt 30 guided around a deflection roller 44 and attached with its lower end to the connecting part 34 a lamella 8 of the lamellar armor 3 is arranged. A connection corresponding to this connection between the V-belt 30 and a lamella 8 of the lamellar armor 3 is brought about via the driver 33 'between the V-belt 30 and the other lamellar armor 2' which is hidden in the figure. A cover 4b protects the drive and guidance of the lamellar armor 2, 2 'against undesired ingress of dirt and the like. When the drive roller 28 (not shown) and thus also the deflection roller 44 rotate, the outer sections of the V-belt 30 shown in the figure move in the opposite direction. Accordingly, the slat armor 2, 2 'connected to the V-belt via the drivers 32, 32' and the connecting parts 34, 34 'are moved in opposite directions, so that their free edges 4, 4' move towards each other when the gate closes and when opening the gate moving away from each other.

The detail V according to FIG. 1 shown enlarged in FIG. 1 shows lamellae 8, the adjacent lateral edge regions of which are connected to one another via sealing tapes 48 fastened to them. The lower edges of the sealing tapes 48 run flush with the lower edges of connecting parts 50, that is to say they cover the upper edge of the continuous closing tape 20, so that no gap remains in the areas between adjacent slats 8 and a very tight closing of the gate opening 6, which prevents drafts and dust from entering is made possible.

As the bottom-side guide of the slats 8 shown in section in FIG. 6a shows, a guide rail 52 which is essentially U-shaped is provided for the guide rollers 16. Towards the bottom surface, the guide rail 52 is closed off by two cover rails 54, 54 ', which leave a narrow slot 56 free. The continuous end band 20 runs in the slot 56 and connects the underside of the slats 8 to the guide rollers 16. A spring element 58 is arranged on the left side of the U-shaped guide rail 52 in the figure. The lower end of the spring element 58 is fixedly connected to the guide rail 52, while the upper end can slide on the underside of the cover rails 54, 54 'and can therefore close the slot 56. The cover rails 54, 54 'consist of a material such as bronze, which has favorable sliding properties compared to the spring element 58 and is less hard than this. When the gate closes, the spring element 58 is pushed by the guide rollers 16 to the inside of the guide rail 52, which is on the left of the figure, so that it assumes the position shown by releasing the slot 56. If the slats 6 of the slat armor 2 and thus the guide rollers 16 are withdrawn from the guide rail 52 to open the door, the spring element 58 assumes the position shown in FIG. 6b and closes the slot 56. The sliding movement of the spring element 58 is thereby facilitated, that the same. Side as the spring element 58 arranged cover rail 54 has a bevel 60 arranged on its lower edge and adjacent to the slot 56. In the position shown in the figure, the free end of the spring element 58 connects with its upper edge almost seamlessly to the upper edge of the cover rail 54 'adjoining the gap 5b, so that only little dirt collects on the upper surface of the spring element 58 covering the gap can.

In the embodiment shown in FIG. 7, the spring element 58 has a crank 62 in the region of its free end, which engages in the slot 56 when the gate is opened and forms a continuous surface with the upper surfaces of the cover rails 54, 54 'almost seamlessly, so that accumulation of dirt on the upper surface of the crank 62 is largely avoided.

Claims

1. gate, in particular motor-driven industrial door, with covering the door opening in the closed position by rigid slats covering the door opening, mutually angled slats, which form a slat armor and are present in the open position in an edge region of the door opening as a winding, characterized in that the slats (8) reach over the height of the door opening (6) and the winding (12) is present on one side edge of the door opening (6), and that the lamella armor (2) is guided in the area of the upper and lower edge of the door opening (6) and is supported.

2. Gate according to claim 1, characterized in that the drive engages pulling in the closing direction in the region of the free edge of the slat armor (2).

3. Gate according to claim 1 or 2, characterized in that the lamellar armor (2) in the winding (12) on the upper and lower guide profiles (14, 38) is guided such that the windings come to lie one above the other without contact.

4. Gate according to claim 3, characterized in that the windings between the guide profiles (14, 38) are exposed without internal supports and inside the winding (30) drive units, in particular an electric motor (22), are arranged.

5. Gate according to claim 3 or 4, characterized in that the winding (13) is arranged in a hinged box (11).

6. Gate according to one of claims 1 to 5, characterized in that the slats (8) of the slat armor (2) via sealing strips (48) such as spring steel strips are interconnected.

7. Gate according to claim 6, characterized in that the sealing strips (48) are firmly clamped laterally in the slats (8).

8. gate, in particular according to one of claims 1 to 7, characterized in that for bottom-side guidance of the lamellar armor (2) or another sliding leaf, a bottom-side closure band (20) such as spring steel band is provided, which in a narrow bottom-side slot (56) Engages guide rail (52).

9. Gate according to claim 8, characterized in that on the end band (20) guide rollers (16) are mounted, which run in the guide rail (52).

10. Gate according to one of claims 1 to 9, characterized in that the weight support of the lamellar armor (2) is carried out on upper support rollers (42) which run in upper profile strips (39).

11. Gate according to claim 10, characterized in that the guide rollers (16) on the end band (20) are arranged with a vertical axis.

12. Gate according to claim 11, characterized in that the bottom of the guide rail (52) is arranged at a distance below the lower edge of the guide rollers (16).

13. Gate according to one of claims 8 to 12, characterized in that the slot (56) in the bottom guide rail (52) in the. the guide rollers (16) released areas of the guide rail (52) is covered by a Federelemeπt (58) which can be elastically pushed to the side by the guide rollers (16) or the end tape (20).

14. Gate according to claim 13, characterized in that when the slot (56) is covered, the spring element (58) engages with a crank (bδ) arranged in the region of its free end in the slot (56).

15. Gate according to one of claims 3 to 5 and one of claims 8 to 14, characterized in that the guide profile (14) and the guide rail (52) connect to one another and form a continuous guide for the guide rollers (16).

16. Gate according to one of claims 3 to 5 and one of claims 10 to 14, characterized in that the guide profile (38) and the profile strip (39) connect to each other and a continuous guide for the guide rollers (40) and support for the support rollers (43) form.

17. Gate according to one of claims 1 to 16, characterized in that two lamellar armor (2, 2 ') are provided which meet one another in the middle when the gate opening (b) is closed.