EP2326784A2

EP2326784A2 - Vertical lift door

Info

Publication number: EP2326784A2
Application number: EP09778013A
Authority: EP
Inventors: Matjaz Sentjurc
Original assignee: Efaflex Inzeniring doo
Current assignee: Efaflex Inzeniring doo
Priority date: 2008-08-21
Filing date: 2009-08-20
Publication date: 2011-06-01
Anticipated expiration: 2029-08-20
Also published as: JP5722216B2; KR20110053242A; KR101608793B1; WO2010020419A3; WO2010020419A2; EP2326784B1; CN102124179A; DE102008039144A1; WO2010020419A8; JP2012500347A; SI2326784T1

Abstract

The invention relates to a vertical lift door, especially a high-speed industrial door, comprising two guide tracks which are arranged on opposite sides of a door opening, and a lamellar armor structure (2) for covering the door opening in the closed position. The lamellar armor structure (2) comprises strap hinges (21) which have hinge members (22) that are articulated to each other and that can be bent in relation to each other via hinge pins (23). The strap hinges (21) have a length that corresponds to the internal height of the door opening, the strap hinges (21) being supported and guided in the guide tracks (31), and the lamellar armor structure (2) having lamellae (24, 24a) that are put onto the hinge members (22). The vertical lift door according to the invention is characterized in that lateral edge sections of two adjacent lamellae (24, 24a), which sections face each other, are designed to be complementary to each other in such a manner that they engage with each other when the vertical lift door (1) is closed, thereby producing a labyrinth seal. The improved vertical lift door is suitable for high-speed operation and at the same time has fire protection properties.

Description

description

lifting door

The invention relates to a lifting door, in particular a high-speed industrial door, with two guide tracks, which are each arranged on the two opposite sides of a door opening, and a lamellar armor for covering the door opening in the closed position, wherein the lamellae hinge bands, which have hinge members which articulated with each other connected and hinged against one another via hinge pins, wherein the hinge straps have a length corresponding to the clear height of the door opening, and wherein the hinge straps are supported and guided in the guideways, wherein the slat armor further comprises slats, which are mounted on the hinge members.

Such a lifting door has become known, for example, from WO 91/18178. This is suitable for a high-speed operation of up to 3 meters per second and offers in the closed state an excellent tightness against wind and weather attack as well as security against an unauthorized

To open. In addition, this known lifting door can be moved with a low noise. It has proven itself in practice with great success.

It has proved to be particularly advantageous that the

Hinge straps form the supporting framework of the lamellar armor and absorb all forces arising during the movement of the lifting gate. Since these hinges are supported and guided in the guideways at the same time, a very fast running of the lifting door is possible without the movement is uneven or restless. The high-speed properties of this known

Lifting gates are further supported by the fact that the lamellae is guided in the area of the lintel without contact in a winding, which is determined by correspondingly spirally guided sections of the guideways. The individual lamellae are placed with such a distance from each other on the hinge members of the hinge straps that each adjacent lamellae by means of the hinge strip against each other are angled. In this known example, a gap is formed at a distance of adjacent lamellae, in which engage the hinge pin of the hinge bands. By providing the pivot axis of each hinge within the space between the slats, on the one hand, the angular openings between the adjacent slats and, on the other hand, the tilting accelerations when entering the upper guideways are minimized. This is associated with correspondingly smaller acceleration forces at the angle and consequently possible higher running speeds of the lifting gate.

Adjacent lamellae of this conventional lift gate are provided approximately over the entire width of the gate away, each with sealing strips, which a

Provide windproofness and prevent the ingress of rainwater and dust.

In addition, they also ensure a mechanical stability of the slats with each other. As a result, the lamellae in the closed position withstands even larger wind loads without being bulging or being deformed. Here, these sealing strips have thickenings which engage in correspondingly formed recesses on the mutually facing side edge sections of two adjacent lamellae.

The lifting door according to WO 91/18178 has proven very successful as a high-speed industrial door, but it provides only a very limited fire protection function. On the other hand, fire protection door arrangements have become known with which a space closure with high fire resistance effect to be produced. For the assessment of the fire resistance here three criteria are set: Firstly, the fire protection gate assembly must have sufficient intrinsic stability in order to maintain the room closure even in a fire for at least a predetermined period of time. Another criterion is the flame resistance, ie the time until flames can penetrate the other side of the goal. As a third criterion, the insulation effect of the fire protection curtain is taken into account, wherein the temperature on the non-fire side is not may increase more than a predetermined value in a predetermined time. In order to meet these requirements, conventional fire door assemblies often have a relatively high weight and therefore can only be operated very slowly.

It is therefore an object of the present invention to provide an improved lift gate, which is suitable for high-speed operation and at the same time provides fire protection properties.

This object is achieved by a lifting gate with the features of claim 1. This is distinguished, in particular, by the fact that mutually facing side edge sections of two adjacent lamellae are designed to be complementary to one another in such a way that they engage in one another when the lift gate is closed in order to produce a labyrinth seal.

By thus produced according to the invention seal on the nature of a labyrinth seal on the mutually facing side edge portions of adjacent slats, a resistance force is generated against the passage of gas from one side of the slats to the other side, which suppresses such gas passage. Such gases can thus not pass straight through the lamellae, but are deflected and decelerated or stopped as in a labyrinth.

At the same time a penetration of flames is prevented in case of fire, since the rectilinear path through the lamellar shell is blocked.

Since the slats of such a lifting gate are typically made of metal and preferably made of aluminum, they withstand the temperatures and thus an effective Torabschluß is achieved in case of fire.

In addition, a possible offset of the two adjacent lamellae is effectively prevented by the intermeshing of the two side edge sections.

This is particularly important if the individual blades are exposed to a different heat and therefore a subject to different levels of bending deformation. According to the invention, the lamellar armor remains in this case as a closed unit and forms an effective Torabschluß to prevent the passage of flame.

Advantageous developments of the invention Hubtores are the subject of the dependent claims 2 to 9.

Thus, the side edge portion of a lamella may be provided with a projection in cross-section, while the side edge portion of the associated adjacent lamella is recessed in cross-section in the central region, so that the

Protrusion positively engages in the recess when the lift gate is closed. In this way can be achieved with structurally simple means an advantageous complementary formation of the side edge portions of two adjacent lamellae.

If a sealing element extending essentially over the width of the door opening is arranged on at least one side edge section of a lamella facing an adjacent lamella, a possible gas transfer in the event of a fire can be prevented even more reliably. In addition, such a sealing element supports the wind-tightness of the lamellar armor. Thus, a lift gate with improved closing as well as fire protection properties can be provided with simple structural means.

The fact that the sealing element is formed from a flame-retardant elastomer, it holds a fire load in a particularly good way withstand. As a result, the fire protection properties of the lifting door according to the invention improve. Suitable materials for this purpose are, for example, chloroprene or silicone.

It is a further advantage if at least one fire protection element made of a material is arranged on at least one side edge section of a lamella facing an adjacent lamella, which expands under thermal action and closes a gap between the side edge sections of adjacent louvers. This is still a achieve more reliable shielding of one side of the lamellar armor opposite to the other side. Thus, for example, combustible elements, which are mounted on one side of the lifting door, are even more reliably shielded against a radiation power of the source of fire on the other side of the door. This improves the fire protection function of the invention Hubtores, this being possible at the same time with little design effort and using materials known per se. In practice, for example, a material from the "FIREFLY" product range from TENMAT GmbH has proven to be particularly suitable for such a fire protection element, for example "FIREFLY 102" capable of expanding to 25 times its original thickness in the event of fire and thus reliably closing openings.

If at least two fire protection elements are present on the at least one side edge portion, which are respectively arranged in gap regions adjacent to the large surfaces of the lamellar armor or facing thereto, reliable shielding for the other side can be achieved independently of the side on which the fire source is present achieve the lifting gate. In addition, the fire protection elements can then successively come into effect and thus further improve the stability of the lifting door according to the invention in case of fire.

It has proven to be advantageous if a gap between the projection and a side wall of the recess at the side edge portions is at least three millimeters wide. Then on the one hand there is enough space to allow undisturbed Abwinkein the individual slats against each other, for example, in a spiral section in the lintel area, and on the other hand to keep the gap narrow to prevent the passage of hot gases etc. through the labyrinth seal as reliable as possible. Especially in high-speed operation, it has proved to be advantageous if this gap is at least five millimeters and in particular at least seven millimeters wide. In this case, such gap widths are particularly uncritical in a fire, especially if there is a fire protection element in the area between the two associated lamellae, which expands under the influence of heat and readily able to close even a gap of seven millimeters or more.

In addition, the lift gate according to the invention may in a further embodiment also have a bottom-side closure element, which is preferably formed from a flame-retardant elastomer, wherein the closure element at least one fire protection element is arranged from a material which expands under thermal action and possibly a gap between a bottom slat and a bottom closes. In this way, a reliable conclusion to avoid a crossing of hot gases or a flameout is also achieved on the bottom side of the inventive Hubtor. All the more so if a flame-retardant elastomer is used as a material for the bottom-side closure element. But even if this final element of the heat can no longer withstand, then can be produced by the foaming or swelling of the fire protection element a reliable conclusion in this area.

In this case, it is also possible that the closure element is designed as a hollow profile, wherein the at least one fire protection element is present in the cavity of the closure element. The fire protection element is then protected within the terminating element arranged in general operation and ultimately only effective when the terminating element is destroyed due to thermal influence and there is a risk that a gap could arise on the bottom side of the invention Hubtor. The fire protection function of the Hubtors invention is thereby further improved.

The invention will be explained in more detail in exemplary embodiments with reference to the figures of the drawing. It shows:

Fig. 1 is a front view of a lifting door according to the invention;

Fig. 2 is a side view of the invention Hubtores in section;

Fig. 3 is a plan view of the invention Hubtores in section; 4 shows a detail section through the lamellar armor of the lifting door according to the invention;

FIG. 5 shows a detail with side edge sections facing one another of two adjacent lamellae according to FIG. 4; FIG.

Fig. 6 is a side view of a blade;

7 shows a section through a side frame;

8 shows a section through a winding box on the gate lintel;

Fig. 9 shows a detail of Fig. 8 with the inlet region of the laminated armor in the

Wrap box; and

10 is a detail view of a bottom end element of a

Slatted armor.

In the figures 1 to 3, three views of a lifting gate 1 are shown, which is designed as a high-speed industrial door. It has a door leaf in the form of a laminated armor 2, which is held and guided in side frames 3 on both sides, and a winding box 4, which is arranged in the lintel area and the lamellar shell 2 receives in open door leaf.

As can be further seen from the figures, in the two side frames 3

Guideways 31 are arranged, which run upright in the region of the door opening and have a spiral course in the winding box. The lamellae 2 can thus be arranged without contact in the winding box 4 with the lift gate 1 open.

As can be seen in more detail in FIG. 4, the lamellar armor 2 has hinge straps 21, which are each arranged adjacent to the guide tracks 31 on the side of the lamellar armor 2. In Fig. 4, only one of the hinge bands 21 can be seen. The hinge bands 21 have hinge members 22 which are hingedly connected together by means of hinge pins 23 and thus are angled away from each other.

In addition, the lamellae 2 has a plurality of lamellae 24 (see Fig. 6), which are mounted on the hinge members 22 and fixed thereto. As can be seen in particular from Figures 4, 5 and 7, the individual

Blades 24 coupled at their longitudinal ends with roller axes 25, which

Wear guide rollers 26. These engage in guideways 31. The

Hinge belts 21 are thus indirectly supported and guided in the guide tracks 31. The fins 24 are in the present example of a

Aluminum alloy produced.

In that regard, the structure of the lifting gate 1 substantially corresponds to a conventional high-speed industrial door, as exemplified in WO 91/18178.

In Fig. 5 is shown in more detail how mutually facing side edge portions of adjacent blades 24 are configured. Thus, an upper side edge section 241 of a lower sipe 24 engages positively in a lower side edge section 242 of an upper sipe 24. For this purpose, a projection 243 is formed on the upper side edge portion 241. At the upper end of the projection 243 while a sealing element 27 is disposed of the material chloroprene, which is fixed in a mounting groove on the projection 243. The material chloroprene is characterized by its good fire protection properties, since it is flame retardant. The lower side edge portion 242 has a

Recess 244, which is bounded laterally by two side walls 245. 6 shows the cross-sectional shape of such a blade 24.

As shown in Fig. 5, the projection 243 and the side walls 245 overlap at the respective associated side edge portion, so that here

Labyrinth is formed, which impedes the passage of gases such as air and in particular of heated air in the manner of a labyrinth seal. By the arrangement of the sealing element 27 while the gas passage is completely suppressed in the closed lifting door 1. The sealing element 27 For this purpose, it extends essentially over the entire width of the lamellar armor 2 or the door opening.

In this case, there is a gap 246 between the projection 243 and a respective side wall 245 of the recess 244, which has a significant influence on the tightness of this type of labyrinth seal. The less wide this gap 246 is on both sides of the projection 243, the lower the tendency to let air flows, for example, due to a wind load. On the other hand, however, a certain minimum gap is appropriate to allow unhindered Abwinkein the individual blades 24 against each other in the winding box to form the spiral winding. In practice, a gap with a width of, for example, 7 mm on both sides of the projection 243 has proved to be particularly suitable in order to reliably prevent damage to the blades 24 in the high-speed operation. It should be noted that at Torblattgeschwindigkeiten of example, 3 m / sec. considerable dynamic forces come in the inlet of the laminated armor 2 in the winding in the winding box 4 to the effect. As a result, elastic deformation phenomena occur, in particular in the middle region of the lamellar armor 2 over the door width, which can be safely accommodated by a sufficient gap width in the overlap region of adjacent lamellae 24.

In order nevertheless to produce a particularly reliable closure in this boundary region between two adjacent lamellae 24 in the event of fire, fire protection elements 28a are furthermore arranged on the flanks thereof on both sides of the projection 243. These consist of a material that expands under the action of heat and fills existing spaces in a fire-retardant manner. A suitable material is, for example, "FIREFLY 102", which expands to 25 times its original thickness in the event of fire, in which case the fire protection elements 28a have a substantially rectangular cross-section, as shown in FIG Door width of the lifting gate 1, ie it is designed strip-shaped. In case of fire, even with a failure of the sealing element 27 a reliable conclusion of the free space between two fins 24 is possible, so that a flame can be reliably prevented.

FIG. 7 shows a plan view of a detail in the region of a side frame 3.

From this illustration shows how the laminated armor 2 engages by means of the roller axes 25 and the guide rollers 26 in a guide track 31 and is held therein.

Further, as shown in FIG. 7, in addition

Fire protection elements 28 b arranged on both sides of the laminated armor 2 in the area in which this enters the side frames 3. The fire protection elements 28b are also formed of a material which expands under the action of heat and here closes the space between a side frame 3 and the lamellae 2 in case of fire. In this way, the transfer of hot gases in case of fire can be reliably prevented even in the area of the side frames 3. A suitable material for the fire protection elements 28b is in turn e.g. "FIREFLY 102." The other side frame 3 is designed analogously to the side frame shown in Fig. 7 and also has fire protection elements.

9 shows in more detail, fire protection elements 28c are arranged here as well, which can be configured analogously to the fire protection elements 28a and 28b and, in the event of a fire, are arranged in the same manner as the fire protection elements 28a and 28b serve a seal of the lintel area. Here, too, a reliable conclusion to hot gases, flames, etc. is possible.

In Fig. 10, the lower portion of the laminated armor 2 is shown. As can be seen from this, a lowermost lamella 24a follows

End element 29 at. The lower side edge portion of the lowermost blade 24a is formed differently than the other blades 24 for this purpose. It includes receiving grooves for attachment portions of the end member 29. The end member 29 is in the present embodiment of a heavy formed flammable elastomer, in which case again chloroprene is used.

As can also be seen from FIG. 10, the closing element 29 is designed as a hollow profile with additional outside sealing lips. Within the free space formed in the hollow profile fire protection elements 28d are further arranged, which in turn from a under heat expands and spaces fire-retardant filling material such

In the event of fire, a reliable closure at the bottom area of the lifting gate 1 is thus possible even in the event of destruction of the closing element 29 due to the effect of heat, thereby preventing the formation of a gap between the lowest lamella 24a and a bottom 5.

The lifting door 1 thus not only shows high-speed characteristics, but can also be used as a fire door. If a fire breaks out in a building, it is thus possible to reliably prevent the fire from spreading through lowering or closing of the lifting gate 1. Individual sections of the building can thus be sealed against each other.

In this case, this protective effect is maintained even if the individual slats 24 of the slatted shell 2 should bend due to a strong heat generation on one side of the lifting door 1. Such a deflection is caused by the then given different temperatures on both sides of the lamellar shell 2, since then a different elongation behavior comes to light. However, since the slats 24 engage one another in a form-fitting manner, there is no danger of an offset occurring between two adjacent slats. Thus, the cohesion within the lamellar armor 2 is permanently retained.

The invention allows, in addition to the illustrated embodiments, further design approaches.

For example, the sealing element 27 can also be arranged elsewhere in the impact area of two lamellae 24. It can eg in the recess 244 positioned and accordingly provided on the upper fin 24. Furthermore, the sealing element 27 may also be present laterally of the projection. It can also be used several sealing elements of this type.

The material of the sealing member 27 may also be a conventional rubber, etc., which does not have any special fire protection properties.

The fire protection elements 28a-28d can each be arranged elsewhere in the respective area, as long as they achieve the desired fire protection effect in the event of an emergency. For example, the fire protection elements 28a may also be present on the side walls 254 of the recess 244. The number of fire protection elements 28d in the region of the closing element 29 can likewise deviate from the four shown. In addition, these can also be present on the outer side of the closing element 29. Furthermore, in certain applications, these fire protection elements 28a-28d can be partially or completely dispensed with.

In some embodiments, the hinge pins can also take over the function of the roller axes, so that the latter can be omitted. The hinge straps are then guided directly into the guideways 31.

The labyrinth in the joint area of two lamellas 24 can also be used on other

As are produced by the explained projection-recess arrangement. Other geometric designs are directly applicable as long as the direct passageway through the lamellae is interrupted in this area.

Claims

claims

1 lifting door (1), in particular high-speed industrial door, with two guide tracks (31), which are respectively arranged on the two opposite sides of a door opening, and a lamellar armor (2) to cover the door opening in the closed position, wherein the lamellar armor (2) hinges (21), the hinge members (22) which are hinged together and hinged against each other via hinge pins (23), wherein the hinge straps (21) have a length corresponding to the clear height of the door opening, and wherein the hinge straps (21 ) are supported and guided in the guide tracks (31), and wherein the lamellae (2) slats (24, 24a) which are placed on the hinge members (22), characterized in that facing each other side edge portions (241, 242) of two adjacent lamellae (24, 24a) are designed so complementary to each other that they with closed lift gate (1) for producing e mesh in labyrinth seal.

2. Lift gate according to claim 1, characterized in that the side edge portion (241) of a lamella (24, 24a) is provided in cross-section with a projection (243), while the side edge portion (242) of the associated adjacent lamella (24, 24a) in Cross section is recessed in the central region, so that the projection (243) engages positively in the recess (244) when the lifting gate (1) is closed.

3. Lift gate according to claim 1 or 2, characterized in that at least one on an adjacent blade (24, 24 a) facing side edge portion (241, 242) of a blade (24, 24 a) in the Essentially over the width of the Toröffhung extending sealing element (27) is arranged.

Lifting gate according to claim 3, characterized in that the sealing element (27) is made of a flame retardant elastomer, e.g. Chloroprene or

Silicone, is formed.

5. Lift gate according to one of claims 1 to 4, characterized in that at least one on an adjacent blade (24, 24 a) facing side edge portion (241, 242) of a blade (24, 24 a) at least one

Fire protection element (28a) is arranged from a material which expands under thermal action and a gap between the side edge portions (241, 242) of adjacent lamellae (24, 24a) closes.

6. Lift gate according to claim 5, characterized in that at least two fire protection elements (28a) on the at least one side edge portion (241, 242) are present, which are each arranged in gap areas adjacent to the large surfaces of the lamellar armor (2), or pointing to it ,

7. Lift gate according to one of claims 2 to 6, characterized in that a gap between the projection (243) and a side wall (245) of the recess (244) is at least 3 mm, preferably at least 5 mm and in particular at least 7 mm wide.

8. Lift gate according to one of claims 1 to 7, characterized in that it further comprises a bottom end member (29), which is preferably formed from a flame retardant elastomer, wherein the end member (29) at least one fire protection element (28d) made of a material is arranged, which is under thermal action expands and possibly closes a gap between a bottom fin and a bottom.

9. Lift gate according to claim 8, characterized in that the closing element (29) is designed as a hollow profile, wherein the at least one fire protection element (28d) is present in the cavity of the closure element (29).