DE102008039144A1 - lifting door - Google Patents

Abstract

The invention relates to a lifting gate, in particular a high-speed industrial door, with two guideways, which are respectively arranged on the two opposite sides of a door opening, and a lamellar armor (2) for covering the door opening in the closed position, wherein the lamellar armor (2) he (22). have, which are hinged together and hinged against one another via hinge pins (23), wherein the hinge bands (21) have a length corresponding to the clear height of the door opening, wherein the hinge bands (21) are supported and guided in the guide tracks (31) , and wherein the lamellar armor (2) lamellae (24, 24a), which are placed on the hinge members (22). The lifting door according to the invention is distinguished by the fact that mutually facing side edge sections of two adjacent lamellae (24, 24a) are designed to complement each other in such a way that they interlock with each other when the lift gate (1) is closed to produce a labyrinth seal. This can provide an improved lift gate, which is suitable for high-speed operation and at the same time has fire protection properties.

Description

The The invention relates to a lifting door, in particular a high-speed Industrial door, with two guideways, each attached to the two opposite sides of a door opening are arranged, and a lamellae to cover the door opening in closed position, with the lamellar hinges having hinge members which articulate with each other connected and hinged against each other via hinge pins, wherein the hinge bands have a length, which corresponds to the clear height of the door opening, and with the hinge straps in the guideways are supported and guided, with the lamellae also has lamellae which are placed on the hinge members are.

Such a lifting door is for example from the WO 91/18178 known. This is suitable for a high-speed operation of up to 3 meters per second and offers in the closed state an excellent seal against wind and weather attack and security against unauthorized opening. In addition, this known lifting door can be moved with a low noise. It has proven itself in practice with great success.

in this connection In particular, it has proven to be advantageous that the hinge straps form the supporting framework of the lamellar armor and all at absorb the forces arising from the movement of the lift gate. Because these hinges at the same time in the guideways supported and managed is a very fast Run the lift gate possible without affecting the movement becomes uneven or restless. The high-speed characteristics this known lift gate are further supported by this, that the lamellar armor in the area of the lintel without contact is guided in a winding, which by accordingly spirally guided sections of the guideways is predetermined.

The individual lamellae are so spaced apart the hinge members of the hinge straps put on that each adjacent lamella by means of the hinge against each other are bendable. In this known example is spaced adjacent Slats formed a gap in which the hinge pin of the Engage hinges. By providing the pivot axis of any hinge within the space between the slats on the one hand, the angular openings between the adjacent Slats and on the other hand, the Kippbeschleunigungen when retracting minimized in the upper tracks. This is connected with correspondingly smaller acceleration forces during Angling and the consequently possible larger Running speeds of the lifting gate.

neighboring Slats this conventional lift gate are approximately over provided with sealing strips throughout the door width, which provide windproofness and the ingress of rainwater and prevent dust. In addition, they also take care of a mechanical stability of the slats with each other. This keeps the lamellae in the closed position even larger wind loads stood without getting to be buckled or deformed. Here are these sealing strips Thickenings on which in appropriately trained recesses at the facing side edge portions of two adjacent ones Intervene slats.

The lifting gate according to the WO 91/18178 has proved 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 retardant is taken into account, wherein on the non-fire side, the temperature must not increase by more than a predetermined value in a predetermined time. In order to meet these requirements, conventional fire protection 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, an improved lift gate to provide, which for a high-speed operation is suitable and at the same time provides fire protection properties.

These Task is achieved by a lifting gate with the features of claim 1 solved. This is characterized in particular by that side facing edge portions of two adjacent Slats are designed so complementary to each other, that this with closed lift gate to produce a labyrinth seal mesh.

By thus produced according to the invention seal in the manner of a labyrinth seal on the mutually facing side edge portions of adjacent slats is against the passage of a gas from one side of the louvered armature to the other side generates a resistance force 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.

simultaneously In case of fire, a penetration of flames is prevented because the straight path through the lamellar shell blocked is.

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

moreover is due to the interlocking of the two side edge sections a possible offset of the two adjacent slats effectively prevented each other. This is particularly important when the individual slats are exposed to a different heat effect and therefore a different degree of bending deformation subject. According to the invention remains the lamellae also exist in this case as a single unit and forms an effective Torabschluß to a flame transfer to prevent.

advantageous Further developments of the invention Hubtores are the subject of dependent claims 2 to 9th

So the side edge portion of a blade in cross-section with a Be provided projection while the side edge portion the associated adjacent lamella in cross section in the central region is recessed so that the projection is positively in the recess engages when the lift gate is closed. To this Way can be with structurally simple means a advantageous complementary formation of the side edge sections achieve from two adjacent lamellae.

If at least one side edge portion facing an adjacent louver a lamella is essentially the width of the Door opening extending sealing element is arranged leaves a possible gas transfer in case of fire even more reliable prevention. In addition, such a support Sealing element, the wind-tightness of the lamellar armor. Thus, with simple structural means a lift gate with improved closing as well as fire protection properties are provided.

Thereby, that the sealing element formed of a flame-retardant elastomer is, it keeps a fire load in a particularly good way was standing. This improves the fire protection properties of the Hubtores invention. Suitable materials These are, for example, chloroprene or silicone.

From Another advantage is when at least one on an adjacent Slat assigning side edge portion of a blade at least a fire protection element is arranged from a material that is under thermal action expands and a gap between the Side edge sections of adjacent slats closes. In order to can be an even more reliable shielding of one side of the lamellar tank opposite the other side achieve. So hereby are for example combustible elements, which stored on one side of the lifting gate, even more reliable against a radiation power of the fire on the other side of the gate shielded. This improves the fire protection function of Hubtores invention, this being simultaneously with little design effort and using by itself known materials is possible. In practice it has become for example, a material for such a fire protection element from the product range "FIREFLY" of the company TENMAT GmbH proved to be particularly suitable. For example, "FIREFLY 102" is capable of at fire to 25 times its original thickness expand and thus openings reliably too close.

If at least two fire protection elements on the at least one side edge portion which are each adjacent in gap areas to the Large areas of the lamellar armor, or on it attributed arranged, can be independently From the side on which the fire is present, a reliable Achieve shielding for the other side of the lift gate. In addition, the fire protection elements then successively take effect and thus the stability the lifting gate according to the invention in case of fire on improve.

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 bending of the individual slats against each other, for example, in a spiral section in the lintel area, and second, to keep the gap narrow to prevent the passage of hot gases etc. through the labyrinth seal as reliably as possible. Especially in high-speed operation, it has proved to be advantageous if this gap at least five millimeters and in particular at least seven millimeters is wide. In this case, such gap widths are particularly uncritical in a fire, especially if in the area between the two associated lamellae there is a fire protection element which expands under thermal action and is readily able to close a gap of seven millimeters or more.

About that In addition, the lifting door according to the invention in a Another embodiment, a bottom-side closure element which preferably consists of a flame-retardant elastomer is formed, wherein the closing element at least one Fire protection element is arranged from a material that is under thermal action expands and possibly a gap between a bottom slat and a bottom closes. In this way is also the bottom side on the lifting gate according to the invention a reliable conclusion to avoid a transfer obtained from hot gases or a flameout. All the more so if a flame-retardant elastomer as a material used for the bottom end element becomes. But even if this final element of the heat can no longer resist, can then be through the Foaming or swelling of the fire protection element establish a reliable degree in this field.

in this connection It is also possible that the terminating element is designed as a hollow profile, wherein the at least one fire protection element present in the cavity of the closing element. The fire protection element is then protected in general operation within the Arranged in the end element and ultimately only becomes effective when the terminating element is destroyed due to thermal action is and there is a risk that the bottom side on the inventive Hubtor could arise a gap. The fire protection function the lifting door according to the invention is thereby further improved.

The Invention will be described below in embodiments the figures of the drawing explained in more detail. It shows:

1 a front view of a lifting gate according to the invention;

2 a side view of the invention Hubtores in section;

3 a plan view of the invention Hubtores in section;

4 a detail section through the lamellar armor of the invention Hubtores;

5 a detail with facing side edge portions of two adjacent lamella after 4 ;

6 a side view of a blade;

7 a section through a side frame;

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

9 a detail from 8th with the inlet region of the lamellae in the winding box; and

10 a detailed view of a bottom end element of a lamellar armor.

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

As can be seen from the figures, are in the two side frames 3 guideways 31 arranged, which run upright in the region of the door opening and have a spiral course in the winding box. The lamellar armor 2 can be thereby with open lifting gate 1 non-contact in the winding box 4 Arrange.

As in 4 can be seen in more detail, has the lamellae 2 hinges 21 on which each adjacent to the guideways 31 laterally on the lamellar armor 2 are arranged. In 4 is just one of the hinges 21 recognizable. The hinges 21 have hinge links 22 on which by means of hinge pins 23 hinged together and thus are angled away from each other.

In addition, the lamellar armor points 2 a plurality of lamellae 24 (see. 6 ), which are on the hinge members 22 set up and fixed to it. As in particular from the 4 . 5 and 7 is recognizable, are the individual lamellae 24 at their longitudinal ends with roller axes 25 coupled, which guide rollers 26 wear. These engage in guideways 31 one. The hinges 21 are thus indirectly in the guideways 31 supported and guided. The slats 24 are made in the present example of an aluminum alloy.

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

In 5 is shown in more detail, such as side facing edge portions of adjacent lamellae 24 are designed. So engages an upper side edge section 241 a lower lamella 24 positively in a lower side edge portion 242 an upper lamella 24 one. This is at the top of the side edge section 241 a lead 243 educated. At the top of the projection 243 is a sealing element 27 arranged from the material chloroprene, which in a mounting groove on the projection 243 is fixed. The material chloroprene is characterized by its good fire protection properties, since it is flame retardant. The lower side edge section 242 has a recess 244 on, which laterally through two side walls 245 is limited. 6 shows the cross-sectional shape of such a blade 24 ,

As in 5 is shown overlap the projection 243 as well as the side walls 245 at the respective associated side edge portion, so that here a labyrinth is formed, which makes it difficult in the manner of a labyrinth seal a flow of gases such as air and in particular also of heated air. By the arrangement of the sealing element 27 is the gas passage at the closed lift gate 1 completely stopped. The sealing element 27 For this purpose, it extends essentially over the entire width of the lamellar armor 2 or the door opening.

It lies between the projection 243 and a respective sidewall 245 the recess 244 A gap 246 which has a significant influence on the tightness of this type of labyrinth seal. The less wide this gap 246 on both sides of the projection 243 is, the lower is the tendency to let through air flows, for example, due to a wind load. On the other hand, however, a certain minimum gap is appropriate to unhindered bending of the individual slats 24 allow each other in the winding box to form the spiral winding. In practice, here has a gap with a width of, for example, 7 mm on both sides of the projection 243 proved to be particularly suitable to reliably damage slats even in high-speed operation 24 to avoid when bending. It should be noted that at Torblattgeschwindigkeiten of example, 3 m / sec. considerable dynamic forces at the inlet of the lamellar armor 2 in the winding in the winding box 4 come into effect. As a result, elastic deformation phenomena occur, in particular in the middle region of the lamellar shell 2 seen across the gate width, which is characterized by a sufficient gap width in the overlap region of adjacent lamellae 24 can be safely taken.

Nevertheless, in case of fire, a particularly reliable conclusion in this border area between two adjacent lamellae 24 Furthermore, in the present embodiment, they are on both sides of the projection 243 Fire protection elements 28a arranged on the flanks. 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 z. "FIREFLY 102", which expands to 25 times its original thickness on fire. The fire protection elements 28a here in accordance with the illustration in 5 a substantially rectangular cross section and extend substantially over the entire door width of the lifting gate 1 , ie it is designed strip-shaped.

In case of fire, so even with a failure of the sealing element 27 a reliable conclusion of the free space between two slats 24 possible, so that a flame can be reliably prevented.

7 shows a plan view of a detail in the region of a side frame 3 , From this representation shows how the lamellae 2 by means of the roller axes 25 and the leadership roles 26 in a guideway 31 engages and is held therein.

As shown in 7 are also additional fire protection elements 28b on both sides of the lamellar armor 2 arranged in the area in which this in the side frames 3 entry. The fire protection elements 28b are also formed of a material which expands under the action of heat and here the space between a side frame 3 and the lamellar armor 2 in case of fire closes. In this way, the transfer of hot gases in case of fire in the area of the side frames 3 be reliably prevented. A suitable material for the fire protection elements 28b is in turn z. Eg "FIREFLY 102". The other side frame 3 is analogous to the one in 7 shown side frame designed and also has fire protection elements.

8th shows the area of the inlet of the lamellar armor 2 in the winding box 4 , As in particular from 9 As can be seen in more detail, fire protection elements are also here 28c arranged, which analogous to the fire protection elements 28a and 28b can be configured and serve in case of fire to seal the gate lintel area. Here, too, a reliable conclusion to hot gases, flames, etc. is possible.

In 10 is the lower section of the lamellar armor 2 shown. As can be seen from this, closes to a lowermost lamella 24a a conclusion element 29 at. The lower side edge section of the lowest lamella 24a this is different than at the other fins 24 educated. It contains receiving grooves for fastening sections of the closing element 29 , The final element 29 is formed in the present embodiment of a flame retardant elastomer, in which case again chloroprene is used.

As further out 10 is recognizable, is the final element 29 designed as a hollow profile with additional outside sealing lips. Within the free space formed in the hollow profile are also fire protection elements 28d arranged, which in turn are formed from a heat-expanding and free-space fire-retardant filling material such as "FIREFLY 102". This is in case of fire even with a possible destruction of the final element 29 due to the heat a reliable conclusion at the bottom area of the lift gate 1 possible. As a result, a gap formation between the lowest lamella 24a and a floor 5 be prevented.

The lifting gate 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 can be done by lowering or closing the lift gate 1 thus a spread of the fire can be reliably prevented. Individual sections of the building can thus be sealed against each other.

This protective effect is maintained even if the individual slats 24 of the lamellar armor 2 due to a strong heat development on one side of the lift gate 1 should bend. Such a deflection is due to the then given different temperatures on both sides of the lamellar armor 2 caused because then a different elongation behavior comes to light. Because the slats 24 However, interlocking form fit, there is no risk that an offset between two adjacent slats arises. Thus, the cohesion remains within the lamellar armor 2 permanently preserved.

The Invention allows in addition to the illustrated embodiments additional design approaches too.

So can the sealing element 27 for example, elsewhere in the joint area of two slats 24 to be ordered. It can, for. B. in the recess 244 positioned and accordingly on the upper lamella 24 be provided. Furthermore, the sealing element 27 also present on the side of the projection. It can also be used several sealing elements of this type.

Since material of the sealing element 27 may also be a conventional rubber, etc., which has no special fire protection properties.

The fire protection elements 28a - 28d each can also be arranged elsewhere in the respective area, as long as they achieve the desired fire protection effect in case of use. So can the fire protection elements 28a for example, on the side walls 254 the recess 244 available. The number of fire protection elements 28d in the area of the closing element 29 may also differ from the four shown. In addition, they can also on the outside of the final element 29 available. Furthermore, in certain applications, these fire protection elements 28a - 28d partly or completely waived.

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

The labyrinth in the joint area of two lamellas 24 can also be made in other ways than 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.

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• WO 91/18178 [0002, 0006, 0037]

Claims (9)

Lift gate ( 1 ), in particular high-speed industrial door, with two guideways ( 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 ( 23 ) are bendable against each other, wherein the hinge straps ( 21 ) have a length which corresponds to the clear height of the door opening, and wherein the hinge straps ( 21 ) in the guideways ( 31 ) are supported and guided, and wherein the lamellae ( 2 ) Lamellae ( 24 . 24a ), which on the hinge members ( 22 ), characterized in that mutually facing side edge sections ( 241 . 242 ) of two adjacent lamellae ( 24 . 24a ) are designed to be complementary to one another in such a way that they are closed when the lifting door is closed ( 1 ) for making a labyrinth seal interlock. Lift gate according to claim 1, characterized in that the side edge section ( 241 ) of a lamella ( 24 . 24a ) in cross-section with a projection ( 243 ), while the side edge section ( 242 ) of the associated adjacent lamella ( 24 . 24a ) is recessed in the cross section in the central region, so that the projection ( 243 ) positively in the recess ( 244 ) engages when the lifting gate ( 1 ) closed is. Lift gate according to claim 1 or 2, characterized in that at least one on an adjacent lamella ( 24 . 24a ) assigning side edge portion ( 241 . 242 ) of a lamella ( 24 . 24a ) a substantially over the width of the door opening extending sealing element ( 27 ) is arranged. Lift gate according to claim 3, characterized in that the sealing element ( 27 ) made of a flame retardant elastomer, such. As chloroprene or silicone is formed. Lift gate according to one of claims 1 to 4, characterized in that at least one on an adjacent slat ( 24 . 24a ) assigning side edge portion ( 241 . 242 ) of a lamella ( 24 . 24a ) at least one fire protection element ( 28a ) is disposed of a material that expands under thermal action and a gap between the side edge portions ( 241 . 242 ) of adjacent lamellae ( 24 . 24a ) closes. Lift gate according to claim 5, characterized in that at least two fire protection elements ( 28a ) at the at least one side edge portion ( 241 . 242 ), wherein these each in gap areas adjacent to the large surfaces of the lamellar armor ( 2 ), or arranged thereon. 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. Lift gate according to one of claims 1 to 7, characterized in that it further comprises a bottom end element ( 29 ), which is preferably formed from a flame-retardant elastomer, wherein the closing element ( 29 ) at least one fire protection element ( 28d ) is arranged from a material that expands under thermal action and possibly closes a gap between a bottom plate and a bottom. Lift gate according to claim 8, characterized in that the closing element ( 29 ) is formed as a hollow profile, wherein the at least one fire protection element ( 28d ) in the cavity of the closing element ( 29 ) is present.