JP2002541364A - Industrial gate - Google Patents

Abstract

Kind Code: A1 The invention is a fast-acting industrial gate having a gate body in the form of a segmented armor, wherein the segment (2) is a gate. Is guided in a side guide (5) having a helical section (52) with a continuously curved helical shape. Said segment (2) is formed from a material having a flexural strength of less than 1,500 N · m ² . As in the present invention, except that the combined effect of the bendable material and especially the helical shape of the helical section (52) is appropriate to allow particularly fast speeds when opening and closing the industrial gate. Is also understood. In addition, low noise and energy operation of the industrial gate (1) is possible, with less susceptibility to the damage achieved by the flexible design of the segment (2).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD OF THE INVENTION

 The invention starts with a fast-moving industrial gate according to the preamble of claim 1.

[0002]

[Prior art]

As with the shutter principle, conventional retractable gates having a lamella or segment suspension and an upper hoisting shaft are generally known. These roll-up gates are suitable, for example, as external closures for buildings between opening hours, but require a significant amount of time to open and close very slowly. As such, it is normally kept in the open position during business hours.

[0003] Fast-acting rewind gates, which employ rewinding of the gate body above the entrance, are known for practical use. These are, for example, plastic PVC gates, in which a suspension of plastic PVC or similar flexible synthetic material is wound in a conventional manner by means of a conventional winding shaft and unwound to close the entrance. is there. The winding of the gate body or the hanging part of the gate, every time the winding,
Scratches and damage as they would be in the coil of a normal roll-up gate to each other, but this can be avoided. Hangings of plastic thick synthetic material are held by side edges in guides on the side of the wall and at the bottom by transverse aluminum shields with rubber-like contact strips fixed on the lower side. Terminated. As the wind blows, the side edges of the suspension are held by buttons in a vertical guide that does not slide down. The storm causes a protrusion in the central area of the suspension due to the stretching of the material, but the storm button (ant)
The i-wind buttons can generally be removed from the vertical guide of the entrance. Reattachment of this windproof button generally exposes problems and damage can occur to the suspension.

Further, since the aluminum shield is located in an area where collision is likely to occur,
In the event of a collision, it will easily undergo continuous deformation, in which case it will need to be replaced. In order to address this problem, German Patent DE 4313063 C2 describes, for the same application, a retractable gate with a flexible suspension, in which a polycarbonate shield is suspended as a termination. Located at the bottom edge of the part. In the event of a collision, breakage or damage of the shield can be largely avoided. However, it has to be taken into account that the suspended part is disengaged from the side guides by wind forces, for example during the closing operation of the retractable gate. Therefore, such roll-up gates have only limited suitability as closures to the outside of the building.

[0005] German Patent Application Nos. DE 4015214A, DE 4015215A,
From DE 40 15 216 A it is known that a fast-acting industrial gate of the type indicated in the preamble of claim 1 is understood to be very suitable for practical use, Obtained a patent for the take-out gate. In a conventional wound gate, the segments of the gate body are fixed to an upper winding shaft and wound directly on each other, and the segments of the gate body, such as a fast-acting spiral gate, It moves in the guide rail with the help of side rollers. As in the case of segmented gates, but with small diameters, they are bent towards the inside of the door into a straight guide section at the upper end of the entrance. After another 180 degree bend, they are again guided back down to a straight straight line and
After the bending of 80 degrees, the vehicle is guided backwards again. This results in an extended coil in which the segments of the gate body are not above each other and are guided in spaced relation by rollers in the guide. During operation, the guides are positioned significantly apart from each other within the spiral section to safely avoid contact between the segments. The extended shape of the helical section avoids an extra increase in structural height in the head region. In other words, only triple overlap,
At the expense of extra structural depth into the interior of the building, because the only part of the trajectory within the helical section overlaps, the large gap between the guides in the overlapping area increases the structural height. It has only a limited effect in the sense of increasing its height.

[0006] Thus, the speed of movement of the gate body has increased considerably to about 1.5 m per second. Scratches and dirt on the gate body, which are unavoidable when the segments are above each other in the coil and impair the instantaneous light transmission of the gate body, are further avoided.

[0007] The manufacture of said fast-acting spiral gate opens up the principle of a roll-up gate to a new application. That is, conventional roll-up gates with winding shafts, on the one hand, due to these very slow movements and, on the other hand, heavy conditions, which are predominantly metal gate bodies, have to be closed between business hours ( While being employed as a stable entrance closure at night (e.g. at night), PVC torsion gates located behind them in the same aisle often provide a temporary closure between vehicle aisles. Fast-acting spiral gates are frequently used as an alternative to the above two types. These are provided with both a robust and reliable external closure of the entrance between opening hours and a quick opening and closing movement of the vehicle's aisles during opening hours, and a conventional retractable Serves as both a gate and a temporary closure with a torsion gate made of PVC.

If the latter should not be opened properly for any reason,
Since the vehicle collides with the gate body between business hours, the risk of damage to the gate body such as a fast-acting spiral gate increases. When aluminum side segments are used, the resulting segments that have to be repaired are very easily and continuously damaged, such as collisions. Furthermore, such metal segments have a relatively large weight, which results in a high energy consumption for the opening and closing operations, and in particular a strain in the link members associated with a large acceleration force.

[0009] It is therefore desirable that the segments of the gate body be assembled of a relatively ductile material that is lightweight but has tensile strength and mechanical strength. Tensile strength and sturdiness are due, on the one hand, to a high degree of security against entry into the gate body during business hours and, on the other hand, to the absorption of loads reducing damage by wind pressure, thereby closing the entrance. Help. The wind pressure acting on such a closed gate body is such that the side roller flanges strictly prevent this gate body from freely passing through the entrance plane despite the loaded wind pressure. The gate body protrudes until it is brought into contact with the guide side of the side of the wall cooperating with said side rollers. In this case, the segments have an arcuate shape transverse to the inlet and are subject to tension strains due to wind forces.

[0010] The flexible design of such segments is not possible with conventional fast-acting spiral gates, as this creates a problem with intractable non-contact coils in the upper region. That is, for example, two layers of aluminum side plates and about 3
m, so that the upper vertical helical guide rails must be significantly spaced from each other to effectively avoid contact. Large deflections in the vertical guide rails have already been caused by their own weight.

However, this static consideration needs to be added by operational considerations. That is, to be precise, the high speed of movement upon opening results in outwardly protruding segments, which have already been subjected to high centrifugal forces during the first 90 degree distortion. Upon movement to the next vertical path, these centrifugal forces suddenly disappear, causing the segments to twist back and forth, backing up following the upward swing . As a result, the segment in the non-constant vibration state is eccentric to the second 180 positioned to go indoors.
Toward a degree of distortion, they protrude by centrifugal forces so that they are again suddenly accelerated outward and subjected to very severe new vibrations. In extreme cases, the segment
While having diametrically opposite movement, there is further protrusion so that a particularly high reaction force results in the component.

In this case, furthermore, considerable energy losses surface. When moving to a vertical guide section, centrifugal forces cause the rollers to first act on the outside of the guide track and then swing back to contact the inside of the guide track, reversing the direction of rotation of the rollers. As a result, friction loss occurs. This further has a detrimental effect on endurance and the generation of noise in the assembly.

At the previously achieved maximum moving speed of about 1.5 m / s, these unstable properties are still manageable in the case of relatively rigid aluminum side segments, Already includes considerable noise generation. Even with vibration, the mutual contact of the segments in the vertical trajectory of the non-contact coil is ruled out by the relatively large spacing between the guides in an area that coincides with the trajectory in the spiral section. However, the more flexible design of the segments is limited by deceleration so that the centrifugal forces generated at the protrusions avoid globally uncontrolled instability of the segments, including not only mutual contact and damage, but also the generation of severe noise. Must be done, resulting in a reduction in the maximum speed that can be tolerated.

[0014]

[Problems to be solved by the invention]

The present invention is based on the general speed in a method in which on the one hand the effects of being damaged by accidental collisions are drastically reduced, and on the other hand there are no unacceptable terrible noises and high-speed operation is possible. Based on the purpose of designing a dynamic industrial gate.

[0015] This object has a helical shape that spirals section of the guide is bent continuously, segment, general industrial formed of pliable material having a 1,500N · m ² smaller bending strength Achieve that a gate is provided.

In the case of the structure according to the invention, the components of the guide that are continuously curved in a straight part, or in a helical region avoiding the bending point, have a centrifugal force that acts in the same direction as they enter the coil region. That the force has a consequence on the segment,
It is understood besides. Especially at high speeds, these centrifugal forces are caused by alternating centrifugal forces and gravity to avoid oscillating or uniformly unstable movements,
It will always be the protrusion of the outer segment. Where the segments protrude to the plane adjoining the guide rail on the outside, any segments located there protrude outward by centrifugal force, in any case more strongly than the inner segments, and the centrifugal force is This is harmless because it gets higher with larger diameters. Thus,
The protruding segments of the gate body engage in a so-called shell-like profile without any risk of contact during movement in and out of the coil area. The higher, i.e. multiple overlap, of adjacent trajectories in the spiral section that occurs in the case of the present invention is not a problem, albeit manifesting as a disadvantage in the aspect of avoiding contact. It is clear that, as in the present invention, the vibration or swaying of the segments is effected by high speed movement, i.e., a certain centrifugal force acting in a speed-dependent and generally outward direction, and in a forward-reverse direction independent of the speed. This is because excessive gravity can be avoided more safely.

The degree of deflection or protrusion of the segments is further reduced by the action of centrifugal force. This is because the segments interconnected at the edges are always oriented at the appropriate angle by the continuous curve of the guide rail, and thus have a distinctly increased dimension stability against protrusion. is there. This situation is important for the success of the invention, especially in the stationary state. That is, in the open position of the door, the continuous curvature of the helical section causes all segments in the coil area to be oriented at an appropriate angle to each other to support each other against deflection. In this way, the spacing between each helical rotation of the guide track is such that the structural height of the coil area is substantially larger than the normal prior art height and in any case acceptably larger. It can be quite narrow. As a result, under certain circumstances, the portion of the coil area of a normal fast-acting spiral gate that protrudes inward, contrary to expectations, is substantially smaller in depth and more compact in height. It has been completely omitted to make the design, if any, very small.

Experiments have shown that the fast-acting spiral gate according to the invention is much quieter and energy-saving even with the same gate body gravity, as compared to conventional designs. Tests in this respect show that any phenomena that can be estimated can be explained mainly through a considerable reduction of the bending movement in the coil area of the fast-acting spiral gate according to the invention. That is, in the case of the extended coil area, when the first distortion occurs, a bending motion occurs in the connecting rubber strip, and
Upon restoration from the first 90 degree distortion, a corresponding bending motion occurs and the second
When the bending of the rubber strip occurs, the bending motion again occurs, and when restoring from the second distortion, the bending motion of the rubber strip increases by more than 300 degrees with the corresponding bending motion occurring again. This is followed by a completely unobtrusive bending movement, which results in a maximum amount of a single bending movement upon entry into the coil area. This is because the appropriate orientation of the segments at an angle to one another is at least substantially supported throughout the coil area, for example reaching about 53 degrees. This resulted in a reduction in energy consumption of about 30% in the case of the gate in one experiment.

[0019] A further reduction in energy consumption is also achieved by the fact that, due to the centrifugal force, the rollers are in continuous contact with one side of the guide track, thus alternately contacting the inside and outside of the guide in the spiral section. , The reversal of the roller rotation direction
Derived from the fact that it is not further required. Furthermore, this allows the durability of the rollers to be substantially reduced from significantly increasing the useful life of the assembly.

[0020] Furthermore, this will reduce the generation of noise with respect to vibration or swaying motion that is suppressed by the steady action of high centrifugal force. In short, low noise exercise with surprisingly low energy consumption is a result under any circumstances. Furthermore, when flexible segments of synthetic material are used, the energy consumption is reduced since the weight of the gate body can be kept low by the low acceleration forces occurring at the same speed. That is, this results in less distortion in the coupling between segments that are designed to be lighter and have a longer life.

It is known per se to use a guide having a spiral shape that is continuously bent in the spiral section, for segments that exist without contact between each other in the spiral section.

Thus, from German Patent 1,172,560, blinds or shutters of interconnected segments can be provided, for example, in addition to closures at building entrances, for example:
An escalator entrance closure is known.
The segment of this known shutter is engaged in a side guide and has a plurality of rollers inside the guide rail. Known shutters can be opened manually or by machine and have a sprocket which acts on the rollers of the blind and, if by machine, conveys the rollers at every cut. In the helical section, the shape of the guide is adapted to the purpose for each situation of the insertion by means of an extended helical section with a straight section or a compact helical section with a helical shape that is bent almost continuously for each insertion. Can be done. Also, the material of the segments is such that the dynamic forces do not work due to the low speed of movement, even with a motor drive, and the static forces are usually not so important due to the narrow segment width, so Is freely adaptable to the application of.

[0023] From German Patent No. 3,709,884 A1, furthermore, industrial gates in the form of spiral gates are known, in which segmented armor is known, in the open position, a continuously bent spiral shape and non-contact of the segments. And a configuration having the following arrangement. However, this is a sliding spiral gate with a coiled area and rigid segments provided on the sides of the wall. Thus, since the segmented armor is guided on a support on one of its sides, there is no problem of segment deflection under the influence of gravity. For this reason, there is no need for spacing of the guides in the helical section to avoid contact between the segments during flexing. Due to the rigid design of the segments, no deformation occurs even under dynamic tension.

The arrangement in the linter of the spiral section of this known industrial gate only needs to eliminate the essential properties of the sliding retractable gate, but at an early stage at the top of the gate. It is not hard to release. further,
Instead of a vertical spiral section on both sides, a common spiral section in a horizontal arrangement must be provided in the area of the lintenle, and in the customarily wide width of such sliding retractable gates, Having a thickness. Thus, such applications need to be provided with a considerable distance between the guides in the spiral section to avoid segment contact, and the horizontally arranged spiral section is unacceptable for the head area Structural height. That is, the available entrance height is significantly reduced, thus eliminating one of the basic effects of the sliding retractable gate in turn.

Thus, the known helical section having a continuously bent helical shape,
When applied to a conventional industrial gate, it does not provide any clues to these geometric applications according to the present invention, in cooperation with the flexible design of the segments to achieve the above related effects. .

[0026]

[Means for Solving the Problems]

1,500N · m ² less flexure strength provided for segments of pliable material is defined by the product of the elastic modulus E and geometrical moment of inertia I,
E is a characteristic value for the material used, and I is a characteristic value for the geometric configuration of the segment. Thus, the desired flexural strength is provided by these parameters, which are appropriately set, and it is possible to adapt to the prerequisites of the material, such as different door widths and impact strengths. In practical tests, it is understood that values of the flexural strength below the limit values mentioned above are particularly suitable for the main purpose of the invention. That is, in combination with a spiral shape that is continuously bent, these make it possible to obtain unexpectedly useful effects. Further, as long as the geometric configuration is set to some extent, such a condition may result in the material being used having a modulus of elasticity that allows the gate body to be less susceptible to external influences on damage. Become.

In summary, the present invention provides, firstly, in the form of a segmented armor, a fast-acting spiral gate with a gate body, further increasing the speed of movement and extremes Due to the low noise and energy savings but also the susceptibility to damage, it is suitable as a considerably improved door closure in vehicle aisles,
At the same time, the entrance between business hours can be completely sealed and used as a secure closure to the penetration.

[0028] Effective development can be seen from the features of the claims.

[0029] less than 1,000 N · ^{m 2,} preferably by less than 500 N · ^{m 2,} in particular providing a segment made of a material having a bending strength of 200 N · ^{m 2,}
As in the present invention, for example, less than 40,000 N / mm ² , especially 10,000
Even materials with a low modulus of elasticity less than N / mm ² can be employed, and the risk of continuous deformation or even damage of the segments, for example by accidental impact, can be further reduced. Simultaneous segments are characterized in that they exhibit improved dynamic properties in combination with a continuously bent helical shape. Further, the configuration of the gate body can be arbitrarily adjusted according to the door width through a specific flexural strength.

For the segment according to the invention, the choice of a material having a density of 2 g / cm ³ or less allows a significant reduction in the mass moved, and the centrifugal force can be substantially reduced. In this case, the segments have relatively low weight characteristics due to the low deflection of the matched segments in the upper coil at rest. Thus, the guide rails can be evenly arranged close to each other. This allows a further reduction in the space required at the gate lintel.

Testing on a flexible synthetic material segment, preferably having one layer side, PC, PMMA, PVC, or a combination of the two materials, is shown herein and includes aluminum side surfaces. In addition to a dramatic reduction in susceptibility to damage compared to the segments, a reduction of more than 40% in weight has been achieved. In any case, the problem of shaking or noise in the coil area does not occur even at a speed of movement higher than 3 m / s. 100% higher than the maximum moving speed of the type of the known fast-acting spiral gate.

Furthermore, the good elastic, flexible design of, for example, segments of such materials reduces the tendency for continuous damage suffered by weak impacts, since the segments acted upon by impact can be quite resistant. . In this way, a fairly deep penetration into the plane of the gate body, for example a vehicle part, can be tolerated without continuous deformation.

It is more effective when at least a part of the segment is formed transparent. This makes it possible, even when the gate is closed, to see the space on the side facing the entrance, for example so that traffic vehicles approaching can be recognized. Furthermore, since the segments according to the invention are present in a non-contact manner in the coil, the rubbing of the segment surfaces can be substantially eliminated so that their transparency is maintained continuously.

In the following, the invention will be explained in more detail by embodiments with reference to the figures of the drawings.

[0035]

BEST MODE FOR CARRYING OUT THE INVENTION

As shown in FIGS. 1-3, an industrial gate 1 has a gate body covering an entrance, the gate body being composed of a number of segments 2 interconnected at appropriate angles. ing. These segments 2 are arranged to extend vertically over the entrance and are hingedly interconnected at the side edges through strap hinges 3. The plurality of hinge members of each strap hinge 3 can be aligned at an appropriate angle by hinge pins not shown in detail. A roller 4 having a holding flange is arranged coaxially with the hinge pin, and is engaged with a guide 5 arranged on a frame 6 on both sides of the entrance. This allows for easy exchange of one layer sections. This is because these segments 2 are connected to the strap hinges 3 so that they do not exert any force on themselves so that the lifting movement is guided directly via said strap hinges.

The basic structure of the gate body and the guide will not be described further here, but in particular German Patent No. 4015214A and German Patent No. 4 mentioned for the first time.
No. 015215A, as well as DE 40 15 216 A.

Each of the plurality of guides 5 has a vertical section 51 within the entrance frame 6 and a spiral section 52 in the entrance head area, as can best be seen in FIG. When the gate 1 is opened, the gate body composed of a number of segments 2 is drawn into the spiral section 52 of the guide 5, as shown in FIG. Moving this gate 1 is achieved by a motor not shown here. Further, as can be seen in FIG.
Are present without contact between each other in the spiral section 52. further,
At least in the spiral section 52, these segments 2 are not engaged with the guide 5.

The helical section 52 has a substantially continuously curved helical shape formed without any linear or bent portions. In order to achieve the ideal circular spiral due to manufacturing technology, a quarter circle or half circle guide segment
In this embodiment, they are arranged continuously, and their radii, or this guide segment, are dimensioned to be a spiral giving a continuous curved shape. However, it is also possible to carry out a continuous and integrated production of the guide rails, depending on the choice of materials and production equipment. In this way, the retraction of the gate body into the helically shaped coil area is performed against centrifugal forces acting in the same direction, and preferably has substantially always the same magnitude, but in any case abrupt. Not subject to significant fluctuations. Furthermore, within the range between the guides 5, the projections of the individual segments 2 that may occur under the influence of centrifugal force are greater in each outer position than in the inner segment 2 due to the larger outer diameter. It is not a disadvantage because it resists centrifugal force. Thus, contact between the segments 2 can be avoided in both stationary and non-stationary states.

As shown in more detail in FIG. 4, the segments 2 oriented at an appropriate angle within the helical section 52 have a more limited projection of each segment 2, for example under centrifugal force. As such, they are still stabilized by rubber strips arranged as link members between these segments 2. Similarly, in the case of a static load, the direction of this segment in the spiral region 52 is limited to some extent by the weight of the segment.

FIG. 5 shows a cross-sectional view of a single-layer segment 2. This is PMMA or P
It is composed of a material having a low modulus of elasticity, such as VC or, preferably, an effective combination of the two. In addition, the opposite ends 21 of the segments 2 are used to receive rubber strips not shown here, whereby the one-layer segments 2 can be oriented at an appropriate angle but are sealed and connected to each other ing. Each segment 2 further has a through hole, not shown here, which is provided in the strap hinge 3. Segment 2 of the first layer has a geometrical moment of inertia _{I y} of 22,000mm ^4.

The two-layer segment 2 ′ is shown in FIG. With regard to the functional dimensions of this two-layer segment 2 ′, it is designed in line with the one-layer segment 2 and can thus be exchanged. The two-layer segment 2 ′ is 3
Having a geometrical moment of inertia _{I y} of 5,800mm ^4.

FIG. 7 is a stress-strain diagram illustrating the elastic action of various materials. In particular, in comparison with steel, aluminum and especially PMMA and P
VC means that substantially large deformation before elastic deformation occurs or the limit of tensile force is reached, respectively, is reduced.

The following table and FIG. 8 show the characteristic values of the various materials and of the flexure of the various segments.

[0044]

[Table 1] FIG. 8 shows a deflection strength-deflection diagram, and arbitrary values described in the above table are schematically represented. The characteristic curve a) represents a one-layer segment having a length of 3,000 mm, according to a characteristic curve b) showing a two-layer segment of a certain length. The characteristic curve c) represents a one-layer segment having a length of 6,000 mm by means of a characteristic curve d) showing a two-layer segment of a certain length.

The relationship between the flexing action and the flexing strength shown in FIG. 9 is as follows.

[0046]

(Equation 1) The quantities used in this equation have the following meanings:

F _m Maximum deflection (mm) F Bending force (N) l Board length (mm) E Modulus of elasticity (N / m ² ) I _y Equatorial geometrical lateral moment of inertia (mm ⁴ ) This gives the following relationship to the flexural strength:

[0048]

(Equation 2) Thus, the flexural strength, for both the material used and the geometry of the segments,

[Equation 3] Depending on the amount.

[0049] When the starting bending was assumed constant force F and a predetermined maximum deflection f _m, bending strength, to changes in the length of the plate or segments, the third force, respectively, changes. Here, the approximate flexural strength is understood as a result of a practical test. 1,500 N · m ² is suitable for all conventional door widths of 8 m or more, and is especially effective in cooperation with this bent continuous spiral shape.

Thus, the preferred flexural strength for each door is inferred from this relationship and is substantially smaller for smaller door widths. The factors of the flexural strength of a particular dimension arise from the design of the segment shape preset to a certain degree and from a design that is less susceptible to external effects such as accidental collisions, for example the elastic modulus of the material. .

Thus, as provided by the present invention, depending on the door width, a flexural strength of less than 1,500 N · m ² with different materials and geometries is obtained. Also, segments of aluminum can be formed in corresponding geometric components, but this material is ineffective in terms of low elastic deformation compared to synthetic materials.

While being able to be oriented at an appropriate angle, a plurality of one-layer segments are interconnected by rubber strips, so that the gate body itself, as shown in the table above, has a deflection relative to the one-layer segments. It should be further taken into account that it is more stable than represented by the value. The maximum deflection of the gate body envisaged under actual circumstances is typically 400 mm, and 200 mm for special applications substantially different from this door width.

The modulus of elasticity is a function of the stress on elastic elongation, and therefore it is more important that it has significance only within the elastic region. As the strain at the limit of elasticity substantially reduces the tension on the metal, collisions and the like readily cause continuous deformation of the segment or gate body. Therefore, the range of elastic elongation of each material must be considered in the segment design.

When the segments are formed of a synthetic material, a substantial weight saving can further be achieved. Also, as a result, deflection can be reduced by a linear load in a static state. In this case, it is calculated as follows.

[0055]

(Equation 4) Further, this weight reduction reduces the magnitude of the centrifugal force in an unsteady state such as when the gate is opened and closed.

In addition to the illustrated embodiment, the present invention allows for additional design approaches.

Each segment 2 is made transparent by a single layer design of segment 2 which is more effective with improved transparency. It is only possible to make the segment 2 of one layer of the gate body transparent.

In the embodiment shown, the segments are not guided directly inside the guide 5, but only through the mediation of the rollers 4. However, it is also possible to arrange the segments so as to be surrounded by guides, in particular in the region of the vertical section 51.

Thus, the present invention provides a fast-acting industrial gate in which the guide 5 has a helical section 52 with a continuously curved helical shape. The gate body of the gate 1 of the present invention has lamellae are formed of a material having a 1,500N · m ² smaller bending strength, or the segment 2. As in the present invention, the relatively flexible material of the helical section 52, especially the combination of the helical shapes, is suitable for allowing particularly high speeds during opening and closing of the industrial gate. Furthermore, forces acting transversely to the plane of the entrance can be resiliently absorbed by the flexible design of the segments 2 so that a continuous deformation of the gate body in the event of a collision can be avoided to some extent.

[Brief description of the drawings]

FIG. 1 is a simplified side view of an industrial gate according to the present invention.

FIG. 2 is a partially cutaway front view of the industrial gate according to the present invention.

FIG. 3 is a top view of the industrial gate shown in FIG. 2;

FIG. 4 is a detailed view of a bent section.

FIG. 5 shows a cross-sectional view of a section of one layer.

FIG. 6 shows a cross-sectional view of a two-layer section.

FIG. 7 shows stress-strain diagrams for comparison of characteristic values of various materials.

FIG. 8 shows flex strength-flex diagrams for comparison of single and double enclosed sections as well as various materials.

FIG. 9 is a diagram showing a theoretical explanation of the flexural strength.

Claims (9)

[Claims] 1. A gate body covering an inlet, said gate body being interconnected so that it can be oriented at an appropriate angle, and guided by a guide (5) with the aid of a roller (4). This segment has a plurality of segments (2; 2 ').
5) comprises a vertical section (51) in the frame area (6) of the entrance and a spiral section (52) in the head area of the entrance, said spiral section (52) being a gate in this spiral section (52). Used to receive the rollers (4) of the gate body in an open position such that adjacent areas of the body are spaced apart from each other without contact while being held by the rollers (4) associated therewith. In the high-speed industrial gate (1), the spiral section (52) has a continuously curved spiral shape, and the segment (2; 2 ′) is smaller than 1,500 N · m ^2. An industrial gate formed of a flexible material having a bending strength. 2. The industrial gate according to claim 1, wherein the segments (2; 2 ′) are formed of a material having a flexural strength of less than 1,000 N · m ² . 3. The segment (2; 2 ′) is made of a material having a flexural strength of less than 500 N · m ² , preferably less than 200 N · m ^2. 3. The industrial gate according to 2. Wherein said segments (2; 2 '), the claims, characterized in that less than 40,000 N / mm ^2, and is formed of a material having a particularly 10,000 N / mm ² is less than the elastic modulus 4. The industrial gate according to any one of items 1 to 3. 5. The industrial gate according to claim 1, wherein the segments (2; 2 ′) are formed of a material having a density of 2 g / cm ³ or less. . 6. The industrial gate according to claim 1, wherein the segments (2; 2 ′) are formed of a synthetic material. 7. The (2; 2 ′) is PMMA, PVC, or a combination thereof.
The industrial gate according to any one of claims 1 to 6, wherein the industrial gate is formed by a combination of two. 8. The industrial gate according to claim 1, wherein at least a part of the segment has a single-layer design. 9. The industrial gate according to claim 1, wherein at least a part of the segment (2; 2 ′) is made transparent.