DE102022120651A1 - Industrial gate - Google Patents

Abstract

Industrial door with a door leaf movable along a path predetermined by a guide rail arrangement between a closed position, in which it is arranged approximately in a vertical plane, and an open position, in which it is at least partially arranged overhead, which has a plurality of and arranged one behind the other in the direction of the door leaf movement preferably has door members articulated to one another with respect to joint axes running perpendicular to the predetermined path, and a weight compensation device which is coupled to the door leaf via a coupling device and designed to support the door leaf movement from the closed position to the open position, the weight compensation device having at least one tension spring arrangement which is in the course of a Closing movement of the door leaf from the open position to the closed position can be tensioned by stretching along at least one spring axis.

Description

The invention relates to an industrial door with a door leaf which can be moved along a path predetermined by a guide rail arrangement between a closed position, in which it is arranged approximately in a vertical plane, and an open position, in which it is at least partially arranged overhead, which has a plurality of in Door leaf movement direction arranged one behind the other and preferably with respect to hinge axes that are articulated to one another with respect to the predetermined path, and a weight compensation device coupled to the door leaf via a coupling device and designed to support the door leaf movement from the closed position to the open position.

Industrial doors are used to close openings in commercial buildings, such as logistics centers, warehouses, production halls and the like. The openings to be closed by the industrial gates should usually be passed through by various types of vehicles, such as transport vehicles, forklifts and the like, and/or used for loading and unloading transport vehicles that have approached corresponding loading ramps. Accordingly, the openings and thus also the door leaves regularly have a width of 3.00 m or more, such as 3.50 m or more, possibly 4.00 m or more, possibly even 4.50 m or more, such as 5 ,00m or more. The height of corresponding openings and the door leaves to be used to close these openings is also regularly 3.50 m or more, possibly 4.00 m or more, possibly 4.50 m or more or even 5.00 m or more.

Corresponding door leaves can weigh several hundred kilograms. This weight can increase even further if particularly thick and/or particularly reinforced door leaves are used for the purpose of thermally insulating the space to be closed with the gate from the surroundings and/or for the purpose of a burglar-proof construction. For door leaves designed for thermal separation, door members designed in a sandwich construction can be used, in which an insulating material core is accommodated between shell-shaped elements, such as metal shells. The thickness of the insulating material core can be 80 mm or more. The weight of the door leaves increases accordingly.

Motor-driven drive devices are usually used to move the door leaves of industrial doors between the open position and the closed position. The opening movement, in which the door leaf has to be moved upwards against the force of gravity, is regularly supported by a so-called weight compensation device. The weight compensation device of conventional industrial doors comprises at least one torsion spring, in which a strand-shaped spring element helically revolves around a torsion axis. Such a torsion spring can be tensioned by rotating one end of the strand-shaped spring element about the torsion axis, while the other end is held fixed to the building. Such a rotation can be effected in the course of a closing movement of the door leaf if a traction means coupled to the door member leading during the closing movement is unwound by a storage device which is non-rotatably connected to the rotatable end of the strand-shaped spring element while rotating the storage device and utilizing gravity. The traction means can be a wire rope, while the storage device can be a cable drum connected in a rotationally fixed manner to the rotatable end of the torsion spring.

The spring energy introduced into the torsion spring and absorbed therein by converting potential energy released during the closing movement is available to support the opening movement. An electric motor drive is regularly used, which is coupled to the storage means, such as the cable drum, and causes it to rotate during the opening movement, during which the traction means is wound up again, supported by the spring energy absorbed in the torsion spring .

In conventional industrial doors, the torsion spring is arranged above the building opening to be closed, and it can also be arranged at a rear end of the guide rail arrangement facing away from the building opening, provided that the door leaf is deflected in the course of the opening movement in such a way that it is approximately in a horizontal plane in the open position located.

As already mentioned above, the door leaf can be arranged overhead in the open position approximately in a horizontal plane. Corresponding guide rails regularly have a first, approximately straight guide rail section, which in the closed position extends approximately parallel to a side edge of the door leaf approximately in the direction of gravity, and a second, approximately straight guide rail section, which in the open position is approximately parallel to the side edge of the door leaf extends approximately in a horizontal direction. The straight sections can be over be connected to each other by an arcuate section. To safely guide the door leaf movement, guide rail arrangements of industrial doors have one, two or more guide rails which are arranged in the area of the opposite side edges of the door leaf, whereby each of these guide rails can have two approximately straight sections which are connected to one another via an arcuate section. To guide the door leaf movement, the guide rails cooperate with guide means attached to the door members, such as guide rollers, which can be accommodated in the guide rails. Industrial doors of the type just described are available, for example WO 2018/091204 A1 described. The disclosure content of this document with regard to the guide rail arrangements, door section dimensions and weight compensation devices is hereby incorporated into this description by express reference.

In addition to the industrial doors described, in which the door leaf is arranged overhead in the open position approximately in a horizontal plane, industrial doors are also known in which the door leaf is pulled approximately vertically upwards. Industrial doors are also known in which the door leaf is pulled upwards at an angle during the opening movement, following a sloping roof. Such industrial doors are also known in which the door leaf is initially deflected vertically upwards and only above the room opening in the course of the opening movement and is moved into a horizontal plane or diagonally upwards.

For all industrial doors described, the spatial geometry must enable the accommodation of the door leaf in the closed position and the open position, the accommodation of the guide rail arrangements and also the accommodation of the weight compensation devices. Furthermore, in accordance with the relevant safety regulations, care must be taken to ensure that the door leaf does not fall in an uncontrolled manner if the weight compensation device is damaged, which would entail the risk of injury to people and/or damage to objects. Appropriate fall protection is available, for example EP 3608493 A1 and the WO 2003/087506 A described. The disclosure content of these writings is hereby incorporated into this description by express reference.

The invention is based on the object of providing industrial doors that are structurally simple and can be installed in a large number of commercially used buildings.

According to the invention, this object is achieved by a further development of the known gates, which is essentially characterized in that the weight compensation device has at least one tension spring arrangement, which can be tensioned in the course of a closing movement of the gate leaf from the open position to the closed position by stretching along at least one spring axis.

The invention is based on the knowledge that the limitation in terms of installation conditions is in many cases caused by the use of torsion springs for providing the weight compensation device, because such torsion springs have to be arranged above the opening to be closed with the door leaf.

In the case of gates in which the gate leaf is arranged overhead in the closed position approximately in a horizontal plane, a fall height of at least 300 mm is required for the installation of a corresponding weight compensation device with torsion springs, that is, an installation space of at least 300 mm between the upper edge of the with the opening to be closed by the door leaf and the ceiling of the room or an installation below this ceiling.

In the case of industrial doors according to the invention, however, the tension spring arrangement of the weight compensation device can also be attached in the area of the lateral edges of the opening. This achieves greater variability in terms of the requirements for installation conditions. When arranging the tension spring in the area of the side edges of the opening to be closed with the door leaf, a lintel height of only 200 mm or less, in some cases only 100 mm or less, is generally required, which is facilitated by the use of guide rail arrangements according to the above-mentioned international patent application can be.

In the case of industrial doors, the guide rail sections, which run approximately in a straight line and parallel to the side edge of the door leaf in the closed position, are usually attached to side frame rails, which may be attached to the wall containing the opening with the interposition of insulating materials, such as in the EP 2136025 B1 and the EP 2586952 B1 explained. The disclosure content of these documents is hereby incorporated into this description by express reference with regard to the design and attachment of side frame rails for fastening guide rail sections to the walls containing the opening to be closed.

In industrial door constructions, unlike garage door constructions, the WO 97/37097 A1 described type, so much space is provided in the area of the side frame spars for the accommodation of tension spring arrangements that sufficiently dimensioned tension spring arrangements can also be accommodated there to support the opening movement of heavy industrial door leaves. When using tension spring arrangements as weight compensation devices for industrial doors, it is therefore not necessary to mount these tension spring arrangements with great assembly effort in the area of the second guide rail sections that extend overhead, approximately in the horizontal direction, as in the WO 97/37097 suggested for garage doors.

The weight compensation devices with torsion springs used above in connection with conventional industrial doors have or more torsion springs, which must be dimensioned according to the total weight of the door leaf. This makes it necessary to use the fall protection devices mentioned above, which prevent the door leaf from falling if a torsion spring is damaged.

The tension spring arrangements of industrial doors according to the invention can have a large number of spring elements designed as coil springs, each of which only has to compensate for a fraction of the weight of the door leaf. If individual spring elements are damaged, the remaining intact spring elements provide weight compensation, which is sufficient to prevent damage to objects or injury to people. For this reason, when using industrial doors according to the invention, it is not necessary to provide fall protection, as is provided in conventional industrial doors. This significantly reduces the design effort associated with the provision and assembly of industrial doors according to the invention. The use of tension spring arrangements instead of conventional torsion springs also offers significant advantages with regard to the weight dimensioning of door leaves according to the invention, because by using a corresponding number of tension spring elements, weight compensation can also be provided for door leaves with a very high weight, as occurs when the Door leaf is particularly high, particularly wide and / or particularly thick, that is, with a thickness of 80 mm or more or even 100 mm or more, in order to provide a high degree of thermal insulation if necessary. The invention also contemplates the use of gates that are 60 mm or less thick.

The door leaf of an industrial door according to the invention can have a height of 3.00 m or more, in particular about 3.50 m or more, possibly 4.00 m or more, possibly 4.50 to 5.00 m or more in the closed position. The width of the door leaf of an industrial door according to the invention in a direction perpendicular to the direction of movement of the door leaf and in the plane of the door leaf can be 3.50 m or more, in particular 4.00 m or more, possibly 4.50 m to 5.00 m or more.

The weight of a door leaf of a door according to the invention can be 200 kg or more, in particular 240 kg or more, possibly 300 kg or more, possibly 360 kg or more.

In the case of industrial doors according to the invention, the height of individual door sections in the direction of movement can be 580 mm or more, in particular 600 mm or more, possibly 620 mm or more, in order to be able to cover a large opening height using a comparatively small number of door sections. At least one gate member can have a surrounding frame, in particular an aluminum frame, which may be at least partially transparent. Although the use of industrial doors with four or fewer door sections is also contemplated, an industrial door according to the invention can have five or more door sections arranged one behind the other in the direction of door leaf movement.

In the case of industrial doors according to the invention, the door leaf can have a total size of 5.00 m × 5.00 m or even more. However, the use of industrial doors according to the invention with door leaves that have a size of 4.00 m × 4.00 m or 4.00 m × 3.50 m is also considered.

As with known industrial doors, the guide rail arrangement of industrial doors according to the invention can have a first approximately straight guide rail section which runs approximately parallel to the side edge of the door leaf in the closed position, in particular approximately in the direction of gravity, and a second approximately straight guide rail section which runs approximately parallel to the side edge of the door leaf in the open position have, wherein the approximately straight sections can enclose an angle in the range between 90 ° and 180 ° with each other. The guide rail arrangement expediently has two guide rails attached in the area of the side edges of the opening to be closed, each of which has two approximately straight sections and interacts with guide elements attached to the door members of the door leaf, such as guide rollers.

If the door leaf is designed with hinged axes that are connected to one another in an articulated manner with respect to the hinge axes that are perpendicular to the direction of movement and is to be deflected between the first approximately straight guide rail section and the second approximately straight guide rail section in the course of the opening and closing movement, i.e. it is not pulled up vertically, which is the case This may be the case if the straight guide rail sections enclose an angle of approximately 180 degrees, the approximately straight guide rail sections can be connected to one another via an arcuate guide rail section.

In the area of the arcuate section of the guide rails, polygonal accelerations occur when the door leaf moves. In order to reduce the forces that occur, it has proven to be expedient if an inner guide surface of the arcuate section on a radially inner guide surface thereof has a radius of curvature of 500 mm or more, in particular 600 mm or more, the polygon ratio, that is Ratio of the inner radius of the arcuate section of the guide rail arrangement to the height of at least one gate member, or to the distance between successive hinge axes with respect to which the gate members are articulated to one another, 0.8 or less, preferably 0.75 or less, particularly preferably 0.7 or is less.

In the case of industrial doors according to the invention, the arcuate section can extend into the area below the upper edge of the opening to be closed with the door leaf. In this case, the guide rail arrangement can have a third approximately rectilinear guide rail section, which is arranged above the second approximately rectilinear guide rail section and for guiding a guide member attached to the upper edge of an upper door member in the closed position, such as a guide member perpendicular to the direction of movement of the door leaf running axis of rotation is designed to be rotatably mounted guide roller. This guide element, which is attached to the upper edge of the upper door member in the closed position, does not pass through the arcuate guide rail section, so that complete opening closure can be achieved even if the arcuate section of the guide rail arrangement extends into the area of the upper edge of the opening to be closed with the door leaf . Corresponding guide rail arrangements for garage doors, i.e. for doors with a lower height, lower width and/or lower weight, are in the EP 0230999 A2 described. The disclosure content of this document is incorporated into this description by express reference with regard to the design of guide rail arrangements with an additional guide rail for guide elements attached to the upper edge of the door leaf.

Industrial doors according to the invention can also be used for openings in commercially used rooms whose height is significantly higher than the height of the room opening. In such cases, it can make sense to attach the sections that run in a straight line parallel to the side edges of the door leaf to the building ceiling in the open position. The distance between the upper edge of the opening to be closed with the door leaf and the building ceiling can be bridged if the length of the first approximately straight section at least corresponds to the height of the door leaf in the closed position or the room opening or is greater than the height of the Space opening. In these cases, in the course of an opening movement, the door leaf is first moved vertically upwards beyond the upper edge of the room opening before it is deflected and at least partially arranged overhead, approximately in a horizontal plane.

In the case of industrial doors that are suitable for closing openings in particularly high rooms, the angle between the first approximately straight section and the second approximately straight section can also be approximately 180°, so that the gate is pulled vertically upwards in the course of the opening movement becomes. In these cases, it may be possible to dispense with the use of arcuate sections between the approximately straight sections.

An industrial door according to the invention, like the conventional industrial doors already explained above, can have a drive device that is coupled to the door leaf and can be operated to move the door leaf between the closed position and the open position. Unlike conventional industrial doors, in which the drive device has a wire rope that can be unwound from a cable drum in the course of a closing movement and which is coupled to the lowest gate member in the closed position, the drive device of an industrial door according to the invention is expediently connected to the one leading or in the opening movement Closed position top gate member coupled because the assembly space below the top gate member in the closed position in industrial doors according to the invention is limited by the tension spring arrangements expediently arranged in the area of the first approximately straight guide rail sections, but in the area of the top door member in the closed position There is still enough assembly space available. In other embodiments of the invention, the drive device can also be connected to the

The lowest gate member in the closed position that follows the opening movement must be coupled.

The drive device of an industrial door according to the invention can have a rotating traction means, which can be driven in a rotating manner by a motor and can be coupled via a coupling means to the uppermost gate member in the closed position, the coupling means being at least partially parallel to the two approximately in a straight line in the course of a rotating movement of the traction means extending guide rail sections can be moved. The rotating traction means can be coupled via a coupling arm which is pivotably attached to the top gate member in the closed position. The traction means of corresponding drive devices can be accommodated at least in sections in a drive rail which extends approximately parallel to the second approximately straight section of the guide rail arrangement and two deflection means, such as chain pinions or the like, can rotate with deflection axes which run approximately parallel to one another and perpendicular to the direction of movement of the door leaf, whereby the motor can possibly be detachably coupled to one of these deflection means. Corresponding drive devices are in the EP 1780363 A1 described. The disclosure content of this document is hereby incorporated into this description by express reference with regard to the design and arrangement of drive devices.

The motor of the drive device according to the invention can be a frequency-controlled motor. With such motors, door leaf speeds of 1 m/s or more can be achieved. Through appropriate frequency control, the door leaf movement can be automatically braked in the course of the closing movement if the edge of the door leaf leading during the closing movement falls below a predetermined height in order to reduce the risk of injuries to people or damage to objects in the course of the closing movement. To further reduce the risk of injury to people and/or damage to objects, a light grid arrangement can be provided in the area of the opening to be closed with the door leaf, which is designed to work together with a suitable control device to stop the door leaf movement when a light beam is interrupted.

In addition or as an alternative to a drive device with a motor coupled to the door leaf via a traction means, the drive device of an industrial door according to the invention can also have a motor which can be moved approximately parallel to the second approximately straight section and is coupled to the door leaf, in particular to a gate member which advances during an opening movement . In this embodiment of the invention, the drive device can have a pinion which can be rotated by the motor and which meshes with an engagement means, such as a toothed rack or a toothed belt, which is fixed with respect to the second approximately straight section and extends approximately parallel to this approximately straight section. In the course of a movement of the door leaf, the motor moves along the engagement means in this embodiment of industrial doors according to the invention. If the engagement means is a toothed belt or similar, it can wrap around the pinion and be pushed against the pinion with the help of at least one pressure roller on the side facing away from the pinion in order to ensure a reliable positive connection between the pinion and the toothed belt. Corresponding drive devices are in the EP 1176279 B1 described. The disclosure content of this document is hereby incorporated into this description by express reference with regard to the structural design of a drive device.

The tension spring arrangement of a sectional door according to the invention can have two, three, four or more, such as six or more, possibly eight or more, coil springs. In order to avoid injury to people and/or damage to objects, it has proven to be expedient if each coil spring of the tension spring arrangement is designed to generate a tensile force of 200 N or less when it reaches a closed position. In this way, the creation of excessive crash forces if individual coil springs are damaged can be avoided.

In the sense of a symmetrical introduction of force when supporting the opening movement of the door leaf, it has proven to be expedient if the tension spring arrangement has two groups of coil springs, each of which preferably has the same number of coil springs, such as four or more, six or more or even eight or more coil springs, and which are coupled to opposite lateral edges of the door leaf. A group of coil springs is therefore coupled to it in the area of a lateral edge of the door leaf, while the other group of coil springs is coupled to the door leaf in the area of the other lateral edge.

The spring axes of a tension spring arrangement according to the invention extend as above already explained, expediently approximately in the direction of gravity, that is approximately parallel to the first straight section of the guide rail arrangement, the lower axial ends of the individual coil springs expediently being fastened with respect to the wall having the opening to be closed, while the upper ends of the individual coil springs are attached to the door leaf are coupled. The coil springs can be fixed in relation to the side frame bars, with a plurality of fasteners being arranged on the side frame bars in the direction of gravity to adjust the weight balancing force in the closed position. To couple the coil springs to the door leaf, in industrial doors according to the invention, a door member that trails during an opening movement, i.e. the lowest door member in the closed position, can be coupled to the tension spring arrangement via at least one traction means, such as at least one wire rope. From a safety point of view, it has proven to be expedient if the door leaf is coupled to the tension spring arrangement via two traction devices running parallel to one another, such as two wire ropes. In this case, the traction means, starting from the gate member that follows during the opening movement, can revolve around a first deflection means, such as a first deflection roller, which is fixedly attached in the area of the upper edge of the opening to be closed with the door leaf, and can be deflected downwards, in the further course In the area of the upper ends of the tension spring arrangement, a second deflection means, such as a second deflection roller, which is fixedly attached to this upper end, rotates around and is deflected upwards again, with an end of the traction means facing away from the door member trailing during the opening movement above an upper end in the closed position of the door leaf the weight compensation device is fixed with respect to the wall having the opening to be closed with the door leaf.

With this coupling, the upper end of the traction mechanism arrangement is pulled upwards in the course of the closing movement of the door leaf by the traction means surrounding the deflection means attached to the upper end of the traction mechanism arrangement and the tension spring arrangement is thus stretched or tensioned. The energy absorbed in the tension spring arrangement is then available to support the opening movement of the door leaf, in the course of which the traction mechanism rotated by the traction mechanism arrangement is pushed back down into the starting position at the upper end of the traction mechanism arrangement.

As will be explained further below, in industrial doors according to the invention, tension spring arrangements can be provided on each side of the opening to be closed with the door leaf. In such arrangements, at least one traction means is arranged in the area of the opposite lateral edges, each of which revolves around two deflection means, namely a first traction means, such as a first deflection roller, which is fixedly attached in the area of the upper edge of the opening to be closed with the door leaf, and a second deflection means, such as a second deflection roller, which is fixedly attached in the area of the upper ends of the tension spring arrangement with respect to this upper end. A uniform application of force when supporting an opening movement can be achieved in such industrial doors if the first deflection means are connected to one another in a rotationally fixed manner via a shaft. This connection is of particular importance if the door leaf has a width of 3.00 m or more, in particular 4.00 m or more, such as 5.00 m or more. The even application of force is already useful when the door leaf is operated manually. However, it becomes particularly important when, in the case of a motor drive, force is introduced off-center, for example when the coupling means of a drive device, which is coupled via a traction device on the one hand to a motor and on the other hand to an upper edge of a door leaf in the closed position, is eccentric to this upper edge of the door leaf is coupled.

Similar to those in the WO 97/37097 In the described tension spring arrangements, two coil springs of the tension spring arrangement can also rotate around a common spring axis, preferably in opposite directions, in industrial doors according to the invention, with the upper axial ends of at least two coil springs, preferably all coil springs, of a group of coil springs via a common holder, preferably equipped with the second deflection means the traction means are coupled.

Due to the described coupling of the tension spring arrangement to the door leaf, the door leaf movement is reduced from the open position to the closed position in a tensioning distance of the tension spring arrangement which is reduced by a factor of 2. This means that a movement of the door leaf by 1 m is converted into a stretching of the tension spring arrangement by a tension distance of 0.5 m. In the context of the invention, particularly when using door leaves with a height of 4.00 m or more, in order to avoid excessive stretching of the coil springs, it is also considered to reduce the door leaf movement by a factor of more than 2, in particular 4 or more cause.

In the case of industrial doors according to the invention, the door leaf can be attached to each side Closing opening groups of coil springs can be arranged, each comprising three or four outer springs and three or four inner springs. Using a total of six springs on each side of the opening to be closed, each of which provides a tensile force of 200 N, provides such support that door leaves weighing around 240 kg can be lifted with almost no force. When using four outer springs and four inner springs on each side of the door, i.e. eight springs per side, each of which provides a force of 200 N, door leaves weighing around 360 kg can be moved from the closed position to the open position with almost no force.

The invention also relates to the use of an industrial gate according to the invention for closing an opening in a commercially used building, such as a logistics center, a warehouse, a production hall or the like. When used according to the invention, the lintel height above the building opening, that is to say the distance between the upper edge of the building opening and the building ceiling, can be 300 mm or less, such as 200 mm or less, possibly 150 mm or less, possibly 100 mm or less, while the height of the building opening may be 3.50 m or more, such as 4.00 m or more, in particular 4.50 m or more, possibly 5.00 m or more.

As part of a use according to the invention, transport vehicles can be loaded and unloaded through the building opening when the door leaf is in the open position. Furthermore, uses are also considered in which the building opening is driven through by vehicles such as transport vehicles, forklifts or the like.

The invention also relates to the use of a tension spring arrangement for an industrial door according to the invention.

QUOTES INCLUDED IN THE DESCRIPTION

This list of documents listed by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• WO 2018/091204 A1 [0007]
• EP 3608493 A1 [0009]
• WO 2003/087506 A [0009]
• EP 2136025 B1 [0015]
• EP 2586952 B1 [0015]
• WO 9737097 A1 [0016]
• WO 9737097 [0016, 0039]
• EP 0230999 A2 [0026]
• EP 1780363 A1 [0031]
• EP 1176279 B1 [0033]

Claims (33)

Industrial door with a door leaf movable along a path predetermined by a guide rail arrangement between a closed position, in which it is arranged approximately in a vertical plane, and an open position, in which it is at least partially arranged overhead, which has a plurality of and arranged one behind the other in the direction of the door leaf movement preferably has door members articulated to one another with respect to joint axes running perpendicular to the predetermined path, and a weight compensation device which is coupled to the door leaf via a coupling device and designed to support the door leaf movement from the closed position to the open position, characterized in that the weight compensation device has at least one tension spring arrangement, which can be tensioned in the course of a closing movement of the door leaf from the open position to the closed position by stretching along at least one spring axis. Industrial gate Claim 1 , characterized in that the height of the door leaf in the closed position is 3.00 m or more, in particular 3.50 m or more, possibly 4.00 m or more, possibly 4.50 to 5.00 m or more and/ or the width of the door leaf in a direction perpendicular to the direction of movement of the door leaf and in the plane of the door leaf is 3.50 m or more, in particular 4.00 or more, possibly 4.50 to 5.00 m or more. Industrial gate Claim 1 or 2 , characterized in that the weight of the door leaf is 240 kg or more, in particular 300 kg or more, possibly 360 kg or more. Industrial door according to one of the preceding claims, characterized in that the height of at least one door member in the direction of movement of the door leaf is 580 mm or more, in particular 600 mm or more, possibly 620 mm or more. Industrial door according to one of the preceding claims, characterized in that the door leaf has five or more, in particular six or more, possibly eight or more door members arranged one behind the other in the direction of movement of the door leaf. Industrial door according to one of the preceding claims, characterized in that at least one door member has a frame, in particular an aluminum frame, which may have an at least partially transparent filling. Industrial door according to one of the preceding claims, characterized in that the guide rail arrangement has a first approximately straight guide rail section which runs approximately parallel to the side edge of the door leaf in the closed position and a second approximately straight guide rail section which runs approximately parallel to the side edge of the door leaf in the open position, wherein the approximately straight guide rail sections form an angle in the range between 90° and 180° with one another. Industrial door according to one of the preceding claims, characterized in that the approximately straight sections are connected to one another via an arcuate section. Industrial gate Claim 8 , characterized in that an inner guide surface of the arcuate section has a radius of curvature of 500 mm or more, in particular 600 mm or more, on a radially inner guide surface thereof. Industrial gate after one of the Claims 7 until 9 , characterized by a third approximately straight guide rail section, which is arranged above the second approximately straight section and for guiding a guide means attached to the upper edge of an upper door member in the closed position, such as a guide roller rotatably mounted with respect to the axis of rotation running perpendicular to the direction of movement of the door leaf , is designed. Industrial gate after one of the Claims 7 until 10 , characterized in that the length of the first approximately straight section corresponds at least to the height of the door leaf in the closed position, in particular is greater than the height of the door leaf in the closed position. Industrial door according to one of the preceding claims, characterized by a drive device coupled to the door leaf and operable to move the door leaf between the closed position and the open position. Industrial gate Claim 12 , characterized in that the drive device is coupled to the gate member leading during an opening movement. Industrial gate Claim 13 , characterized in that the drive device has a rotating traction means, which can be driven in rotation by a motor and via a coupling means to which during an opening movement running gate member is coupled, the coupling means being movable at least in sections approximately parallel to the second approximately rectilinear section in the course of a rotating movement of the traction means. Industrial gate Claim 14 , characterized in that the traction means is accommodated at least in sections in a drive rail extending approximately parallel to the second approximately straight section and two deflection means, such as chain pinions or the like, rotate around deflection axes which run approximately parallel and perpendicular to the direction of movement of the door leaf, the Motor is optionally releasably coupled to a deflection means and the drive rail is preferably arranged overhead. Industrial gate Claim 15 , characterized in that the motor has a frequency-controlled motor. Industrial gate after one of the Claims 12 until 16 , characterized in that the drive device has a motor which is movable approximately parallel to the second approximately straight section and is coupled to the door leaf, in particular to a door member which advances during an opening movement. Industrial gate Claim 17 , characterized in that the drive device has a pinion which can be rotated by the motor and which meshes with an engagement means, such as a toothed rack or a toothed belt, which is fixed with respect to the second approximately straight section and extends approximately parallel to the second approximately straight section. Industrial door according to one of the preceding claims, characterized in that the tension spring arrangement has two, three, four or more, such as six or more, possibly eight or more coil springs. Industrial gate Claim 19 , characterized in that each coil spring of the tension spring arrangement is designed to generate a tensile force of 200 N or less when the closed position is reached. Industrial gate Claim 19 or 20 , characterized in that the tension spring arrangement has two groups of coil springs, each of which preferably comprises the same number of coil springs and which are coupled to mutually opposite lateral edges of the door leaf. Industrial door according to one of the preceding claims, characterized in that at least one spring axis extends approximately parallel to the first approximately rectilinear section approximately in the direction of gravity. Industrial gate after one of the Claims 19 until 22 , characterized in that a gate member that trails during an opening movement is coupled to the tension spring arrangement via at least one traction means, such as a wire rope. Industrial gate Claim 22 and 23 , characterized in that the traction means, starting from the edge trailing during the opening movement, revolves around a first deflection means, such as a first deflection roller, which is fixedly attached in the area of the upper edge of the opening to be closed with the door leaf, and is deflected downwards in the further course In the area of the upper end of the tension spring arrangement, a deflection means fixedly attached to this upper end, such as a second deflection roller, rotates and is deflected upwards again, with an end of the traction means facing away from the gate member trailing during the opening movement being fixed above an upper end of the tensioned traction means arrangement , in particular with respect to the wall having the opening to be closed is fixed. Industrial gate Claim 24 , characterized in that at least one traction means is arranged in the area of the opposite lateral edges, each of which revolves around two deflection means, the first deflection means being connected to one another in a rotationally fixed manner via a shaft. Industrial gate after one of the Claims 19 until 25 , characterized in that two coil springs of the tension spring arrangement revolve around a common spring axis, preferably in opposite directions. Industrial gate after one of the Claims 23 until 26 , characterized in that the upper axial ends of at least two coil springs, preferably all coil springs, of a group of coil springs are coupled to the traction means via a common holder, preferably equipped with the second deflection means. Industrial gate after one of the Claims 21 until 27 , characterized in that the door leaf movement from the open position to the closed position is implemented in a tensioning section of the tension spring arrangement that is reduced by a factor of 2 or more, in particular 4 or more. Use of an industrial door according to one of the preceding claims for closing an opening in a commercially used building, such as a logistics center, a warehouse, a production hall or the like. Use after Claim 29 , in which the fall height above the building opening, i.e. the distance between the upper edge of the building opening and the building ceiling, is 300 mm or less, such as 200 mm or less, possibly 150 mm or less, possibly 100 mm or less. Use after Claim 29 or 30 , in which transport vehicles are loaded and/or unloaded through the building opening. Use after one of the Claims 29 until 31 , in which the building opening is driven through by vehicles such as transport vehicles, forklifts or the like. Use of a tension spring arrangement for an industrial door according to one of the Claims 1 until 28 .