EP1660692A2

EP1660692A2 - Enclosure with openable and closeable lateral walls and roof surfaces, and sliding door therefor

Info

Publication number: EP1660692A2
Application number: EP04763718A
Authority: EP
Inventors: Bernd Lucas
Original assignee: BELU AG
Current assignee: BELU VERWALTUNGSGESELLSCHAFT MBH
Priority date: 2003-08-01
Filing date: 2004-08-02
Publication date: 2006-05-31
Also published as: WO2005012587A3; JP2007500785A; DE20312165U1; RU2006106275A; US20060185263A1; WO2005012587A2

Abstract

The invention relates to an enclosure, having openable and closeable lateral walls and roof surfaces, as well as a sliding door therefor, comprising frontwalls (14A, 14B), at least partially-openable and closeable lateral walls (16A, 16B) and roof surfaces (18A, 18B). According to said invention, at least one of the lateral walls is embodied as a curtain (20A, 20B) which can be wound up at the lower end thereof, which is kept ready by means of an end strip (22A, 22B), guided on both sides thereof, and which can be raised or lowered. When closed, the at least one guided end strip (22A, 22B) is embodied as a profile (P), at least partially forming roof surfaces and having a boundary area, oriented towards at least one lateral wall (16A, 16B), from which the curtain (20A, 20B) is hung in a substantially perpendicular manner.

Description

Enclosure with openable and closable side walls and roof areas as well as a roller door for this

The invention relates to a housing with the features of the preamble of claims 1, 16 and 17 and a roller door therefor.

Generic enclosures are known from DE 100 41 257 A1 and are used, for. B. for housing galvanic baths, e.g. B. for galvanizing large components, but are also suitable for paint booths and the like. In this known housing, the two side walls and the entire roof area can be closed by two symmetrical cloth-like curtains. When open, the curtains are wound on winding shafts near the floor on both sides of a galvanic bath. To close the housing, the curtain, which is fastened across its entire width to an end bar, is transferred from the open to the closed position via a vertical double-ended guide that merges into an approximately horizontal guide in the roof area. In order to enable the necessary lateral expansion in the roof area to achieve an approximately cubic housing space, one or two support rollers are moved in the same end guides for each curtain, which, in the closed state, the deflection enable the curtain from the approximately horizontal roof area to the approximately vertical side wall area and extend over the entire width of the curtain.

Such enclosures have proven useful for enclosing galvanized baths that are completely visible at the top. However, arise - especially with increasing bath length, i. H. with increasing side wall length - considerable bending problems because both the end strips and the curtains as well as the support rollers and the winding shaft are exposed to considerable deflection. In the closed state, this leads to considerable cross-sectional dimensions of these loaded components as well as sagging of the curtain in the roof area and in the open state of the housing, in which these components are arranged one above the other in their side guides, to considerable and mostly disruptive structural heights. In particular, the winding shaft arrangement, which can also be raised and lowered, requires a considerable amount of space, in particular large cross-sectional dimensions. This hinders u. a. also the transport of goods, e.g. B. to zinc-coating components from the long side. In addition, the front side walls represent a length limit for the usability of the housing. It is not possible to project the components protruding from one or both sides of the front of the housing from above, for. B. with a crane to transport into the enclosure and not in the open state of the curtain.

.0 On this basis, the invention has for its object to provide a generic enclosure, in which the disabilities are reduced when transporting goods into or out of the enclosure in the open state. Another task is a generic enclosure with smaller and / or fewer components

! 5 to be able to build.

The solution according to the invention consists in a housing with the features of claims 1, 16 and / or 17 and in a roller door therefor with the features of claim 18. The invention is therefore based on the basic idea by means of a multifunctional, comparatively broad end strip others Components of the housing or dimensions of the roller door for this purpose or to be able to do without individual components such as the support rollers. A strip according to the invention is particularly preferably designed in the manner of an airfoil profile. As a result, you are able to considerable side wall lengths of z. B. to span 18 and more meters self-supporting. The roof area can be closed comparatively tightly, in particular the known sagging of the closure element is largely avoided there. The size, shape, material selection and technical concept of the above-mentioned components as well as the components to be used according to the invention described in the exemplary embodiments are not subject to any special exceptions, so that the selection criteria known in the field of application can be used without restriction.

Further details, features and advantages of the subject matter of the invention result from the subclaims and from the following description of the associated drawing, in which - by way of example - a preferred embodiment of a workshop according to the invention with openable and closable side walls and roof surfaces is shown. The drawing shows:

1: an enclosure in vertical section parallel to an end wall in the closed state;

2: the same housing in the fully open state;

3: the same housing with the roof closed and the side walls raised;

4: the same housing in a top view, open at the top and without a roof profile;

5: the same housing in a side view, closed; 6: an alternative embodiment of a housing with motors and counterweights arranged on the floor with the roof about half open;

7: the same housing with motors arranged on the floor with the roof closed;

8: an end strip for a housing according to one of FIGS. 1 to 7 as a suction channel - in sections;

9: a foldable cantilever surface in the lower and upper position;

10: a foldable cantilever surface in the lower and upper position; such as

11: a further foldable cantilever surface in the lower and upper position.

As can be seen from FIGS. 1 to 3, a housing 10, for example for housing a galvanic bath 12, or as a painting booth or the like, consists of end walls 14A and side walls 14B, 16A and 16B and roof surfaces 18A and 18B. The side walls are formed by a curtain 20A, 20B which can be wound up as warp-resistant as possible. In contrast to the side walls, the roof surfaces are formed from components which are not flexible and consist of end strips 22A, 22B, which extend over the entire length of the housing and in end-side guides 26A, 26B via corresponding guide means, such as rollers 42A, 42B, over a vertical area and an arc region adjoining upwards along the side wall zone into the roof zone and back can be moved by means of a windable pull rope 40A, 40B, which is deflected several times, in particular at 50A, 50B. Free cantilever surfaces 32A, 32B and 34A, 34B are preferably formed on both ends of the end strips 22A, 22B, so that overall a comparatively rigid, wing-like overall profile is created in the direction of the housing length to be spanned, which essentially forms the roof surfaces 18A, 18B. This overall profile is in the open state (FIG. 2) oriented approximately vertically and can be sunk if necessary, for example in the floor or a parapet, while in the closed state it is oriented essentially horizontally or with a slight inclination to the outside.

In the closed state, winding shafts 24A, 24B that can be applied by motor form the lower curtain. The winding shafts 24A, 24B are preferably vertically guidable and displaceable, in particular in the guides 26A, 26B already mentioned, by means of guiding means such as rollers 46A, 46B, the lifting and lowering being effected both by an independent drive and, as shown, after releasing locks can be done by actuating the winding drive 38A, 38B for the curtain, a weight compensation device 36A, 36B with counterweights being used. As a result, the side walls can also be raised from below and opened, if necessary, close to the roof (see Fig. 6 and 7, description below). The side wall curtain 20A, 20B, which is fixed at one end to the laterally projecting end region of the end bar 20A, 20B and preferably there at the projecting end of the cantilever surface 32A, 32B over its entire length, is at the other end in a corresponding manner on the winding shaft 24A, 24B attached.

Since the lower winding shaft 24A, 24B is fastened to the curtain 20A and is only guided through the guides 26A, 26B, there is a damping property in the event of explosions. In addition to hot zinc splashes, such explosions are common in galvanizing plants. The pressure wave generated during the explosion throws up to a few tons of zinc against the inside of the curtain 20A, 20B, as a result of which it experiences an outward pressure and expands accordingly if it is stretchable and / or deformed. Since the winding shaft 24A, 24B is not firmly attached but can move freely upwards, the deformation of the curtain 20A, 20B, which is forced by the explosion, is made possible by lifting the winding shaft 24A, 24B. The resulting damping of the pressure wave reduces the likelihood of the curtain 20A, 20B tearing or other damage. In addition, it is provided that the curtain 20A, 20B consists of a fabric with a special rubber alloy, so that there is a lubricating film for the hot zinc spraying against the inside of the curtain 20A, 20B, on which the zinc can slide downwards without that the tissue is damaged. Both a permanent lubricant film and a melt lubricant film created by the heat of the zinc spraying against the fabric can be used.

With a suitable choice of material, especially with low-stretch curtain types, such as lattice-reinforced tarpaulins or foils, the winding shaft is stabilized by the end strips by means of the curtain and, in extreme cases, is largely carried. This arrangement is also of independent inventive importance. The winding shaft can therefore despite a considerable length of z. B. 18 meters can be comparatively small in cross-section. Otherwise, the outwardly facing cantilever surfaces 32A, 32B act with their free edges as curtain spreads and can pivot outwards with respect to the guide rails.

It goes without saying that suitable motors 44A, 44B are used for lifting and lowering the end strips 22A, 22B, which enable the end strips to be raised and lowered by means of correspondingly deflected traction cables or the like, with conventional weight balancing devices, e.g. B. can be used using counterweights or suitable spring elements.

In this case, two synchronously controlled motors 44A are preferably used on each side, in particular for medium-sized or longer systems (from approx. 10 m in length), as can be clearly seen in FIG. 5. Since these can be operated without mechanical forced synchronization (such as in the form of a continuous and longitudinally extending shaft), they are preferably arranged in the upper area of the housing 10, so that the motors 44A directly follow one necessary for closing the housing 10 can exert tensile force from the advantageous upper position. In, in particular, shorter systems, expensive synchronous motors can be dispensed with and motors 44A, 44B with a continuous shaft can be used instead. For various reasons (safety concerns, necessary support of the shaft, facilitation of maintenance work, etc.), these could be arranged in the lower area of the housing 10 or the system. For example, attachment in a safety railing or on the floor (see FIGS. 6, 7) is provided. If the continuous connecting shaft could have a disruptive effect (eg side access obstacle), a drive arrangement can also be embedded under the hallway or in the floor. If the motor 44A, 44B is arranged in the lower region, a further guide roller 52A, 52B is generally necessary. In addition, in the exemplary embodiment shown in FIGS. 6 and 7, the deflecting roller 50A, 50B, in comparison with the variant with motors 44A, 44B arranged at the top, is reversed by the pull rope 40A, 40B, so that the combination of guides 52A, 52B and Deflection roller 50A, 50B enables the housing 10 to be opened and closed even with motors 44A, 44B arranged in the lower region.

In an advantageous embodiment, at least a part, in particular the part of the cantilever surface 32A, 32B, 34A, 34B which extends to the center of the housing when closed, can be designed to be foldable or foldable. For this purpose, the cantilever surface 32A, 32B, 34A, 34B in the foldable variant is equipped with a joint 33 which is preferably arranged in the region of the end bar 22A, 22B. This joint allows the corresponding part of the cantilever surface 32A, 32B, 34A, 34B to open or close depending on the position in the direction of the double arrow A (see FIG. 9). The folding direction of the folding angle as well as the positions at which the folding direction and folding angle are changed can be selected by appropriate control devices and / or cantilever surface properties. For example, the weight distribution of the cantilever 32A, 32B, 34A, 34B determines at which position during the movement of the end bar 22A, 22B the weight of the cantilever 32A, 32B, 34A, 34B moves it into an open or closed position. In addition, the movement of the cantilever 32A, 32B, 34A, 34B can be supported by mechanical devices. For example, in one embodiment, a swivel lever 51 is arranged on the area of the cantilever surface 32A, 32B, 34A, 34B facing the end bar, which is moved by a pressure roller 52 fastened in the upper, central area of the housing 10 during the movement of the end bar 22A, 22B in FIGS Experiences closed state or from a power transmission and as a result the cantilever surface 32A, 32B, 34A, 34B is folded around the hinge 33 in the horizontal closed state. This also guarantees that the housing 10 is securely closed by the cantilever surface 32A, 32B, 34A, 34B, even if the joint 33 should be difficult to move, for example, and the weight of the cantilever surface 32A, 32B, 34A, 34B alone would not be sufficient. In a modified embodiment, the arrangement of a pressure roller 52 'in the upper, lateral region of the housing 10 can ensure that the cantilever surface 32A, 32B, 34A, 34B during the movement of the end bar 22A, 22B into the upper position into a vertical state, where, on the other hand, when the end bar 22A, 22B is lowered, the cantilever surface 32A, 32B, 34A, 34B is moved into a horizontal position (see FIGS. 10, 11). Such an arrangement is particularly advantageous if a crane arrangement, in particular a crane runway rail, is installed in the upper region of the housing (see FIG. 11).

The same applies analogously to a foldable cantilever surface 32A, 32B, 34A, 34B, in which, in addition to the first joint 33, there are further joints 33 ', etc. arranged in the cantilever surface 32A, 32B, 34A, 34B. The number of joints 33, 33 'etc., their directions of rotation and any parallel linkages 35 determine the folding properties of the cantilever surface 32A, 32B, 34A, 34B. The folding movement can additionally be supported by preferably mechanical devices. In one variant, the parallel linkage 35 is equipped with an eccentric, which is actuated by a pressure roller during the movement of the end bar 22A, 22B and thereby unfolds the folded cantilever surface 32A, 32B, 34A, 34B.

Foldable or foldable cantilever surfaces 32A, 32B, 34A, 34B are particularly advantageous in the case of enclosures in which the remaining parapet height when the housing is open housing should be as small as possible, for example to load or unload a zinc bath in the housing from the side. Furthermore, it is also possible to reinforce the foldable cantilever surface 32A, 32B, 43A, 34B and, if the winding shaft 24A, 24B is arranged under a floor, cover it with the cantilever surface 32A, 32B, 34A, 34B when the housing 10 is fully open to make it passable.

The movement of the end bar 22A, 22B and thus the movement of the entire curtain 20A, 20B and the cantilever surface 32A, 32B takes place, as already explained, with the aid of the drive 44A, 44B. In order to relieve this, a weight balancing device, e.g. a first counterweight 66A, 66B is used, which compensates for the weight of the curtain 20A, 20B and the cantilever surface 32A, 32B. For this purpose, a support cable 64A, 64B, which runs via guide and deflection rollers 60A, 60B, 62A, 62B attached to the upper end of the housing 10, is connected to the end bar 22A, 22B.

In order to do justice to the different loads during the opening or closing of the housing 10, the counterweight 66A, 66B consists of two weight masses G1 and G2, G1 being larger than G2. The weight mass G2 is, preferably, arranged vertically freely running within the weight mass G1 and connected to the support cable 64A, 64B, which can run through an upper opening of the weight mass G1. A pull on the support rope 64A, 64B, which is caused, for example, by lowering the curtain 20A, 20B, first raises the weight G2 until it hits the weight G1 and pulls it up accordingly. The counterweight therefore knows depending on Position either the weight mass 0 (both weights on the floor), G2 (only G2 raised) or the total weight mass G1 + G2 (both weight masses raised).

As can be seen in FIG. 6, the length of the support cable 64A, 64B and the position of the guide and deflection rollers 60A, 60B, 62A, 62B are selected such that the counterweight 66A, 66B at a point where the cantilever surfaces are not completely closed are completely placed on the floor and therefore do not exert any counterweight force on the end bar 22A, 22B. This point therefore determines the zero position of the counterweight 66A, 66B, so that both a lowering of the end bar 22A, 22B in the opening direction and the opposite closing movement would cause the counterweight 66A, 66B (first G2, then G1) to be raised.

In the closing direction, only the smaller weight G2 is raised from the zero position, as can be seen in FIG. 7. This has the effect that, in the closed position in which the two cantilever surfaces 32A and 32B touch, counterweight exerts a weight force of G2 on the end bar, so that movement of the cantilever surface 32A, 32B also against any frictional resistance (static friction) and despite the small force component acting downwards in the closed position due to its own weight is made possible.

As can also be seen in FIGS. 6 and 7, the curtain 20A, 20B can also be opened from the bottom upwards by actuating the winding drive 38A, 38B. The upper part of the curtain 20A, 20B, in particular the end bar 22A, 22B, remains fixed at a desired position and the lower part is rolled up by means of the winding drive 38A, 38B. In order to also relieve the load on the winding drives 38A, 38B, the winding shaft 24A, 24B and the winding drive 38A, 38B driving them are provided with a second counterweight 68A via a support cable 71A, 71B running over a deflection roller 70A arranged in the upper region of the housing 10 , 68B. This counterweight 68A, 68B is designed such that it compensates for the weight of the winding shaft 24A, 24B, the winding drive 38A, 38B and in part the weight of the rolled curtain 20A, 20B. It is recessed vertically free-running in a preferably tubular receptacle 69A, 69B.

Another peculiarity is that the guides 26A, 26B do not necessarily have to extend towards the roof ridge. Rather, as shown, they preferably end clearly in front of the roof ridge, so that between their roof-side ends a gap of considerable width remains free, through which, when the curtain is lowered, a roof surface opening 30 which extends beyond the guides remains free and which is preferably followed by closing openings 28 in the vertical direction on the end wall. This means that components that are longer than the factory building can be transported with a crane over the roof area (transport direction V) into the factory building and transported out of it, e.g. B. to treat overly long components from both ends in succession in a galvanic bath. Corresponding gates 48A, 48B can therefore be provided for closing the closure opening 28 at the end face. Cantilever surfaces 34A, 34B, which project beyond the ends of the guides 26A, 26B and can be designed as an integral or attached part of the end strips 22A, 22B, serve to open and close the roof surface opening 30.

A roller door according to the invention for housings according to the invention therefore consists of a curtain 20A, 20B which can be wound up at the lower end and a two-way end strip 22A which keeps the curtain wide and raises and lowers it; 22B. Such roller shutters are also of independent inventive importance and can also be used in fixed buildings.

Another advantage of housings and / or rolling gates according to the invention is that they can also be used advantageously when crane runway rails run perpendicular to the curtain, in which case they are located above and possibly to the side of the curtain or rolling gate and it becomes possible from the Sidewall (transport direction H), ie in the direction of the roller shutter, goods into and out of the housing or into a workshop provided with a corresponding roller shutter, without the housing or factory roof disturbing. Such applications also come in areas other than the housing of galvanic baths, such as. B. painting booths and similar halls into which larger workpieces must be transported in and out with a crane - even if medium-sized or even small roller shutter widths are considered. Finally, it is advantageous if, in the housing according to the invention, the end bar 22A, 22B is equipped with at least one continuous suction channel or is designed as a suction channel, as shown in FIG. 8. The problem that the entire volume enclosed by the housing can only be aspirated at certain points through a suction opening that is frequently incorporated in the end wall 14A, 14B is minimized in that the end bar 22A, 22B equipped with at least one suction channel or designed as such is connected to the Has suction slots 80A on the inside of the housing 10 and thus allows suctioning over the entire length, the suctioned volume being able to be output via an opening 82A on the front. When the housing is closed, the end bar 22A, 22B is preferably fluid-tightly connected to an opening on the end wall, so that the sucked-in volume can be discharged to the outside. The distance between the end bar 22A, 22B and the opening of the end wall can be sealed with rubber lips 84A.

Claims

Protection claims:

1. Enclosure, such as for enclosing a galvanic bath (12), consisting of end walls (14A, 14B) and at least partially openable and closable side walls (16A, 16B) and roof surfaces (18A, 18B), in which at least one of the Side walls are designed as curtains (20A, 20B) that can be wound up at the lower end and are held ready and raised and lowered by means of an end strip (22A, 22B) guided at both ends, characterized in that the at least one guided end strip (22A, 22B) is in the closed state at least partially roof surface-forming profile (P) is formed, on the edge zone of which is directed toward the at least one side wall (16A, 16B), the curtain (20A, 20B) is fastened in a substantially vertical manner.

2. Housing according to claim 1, characterized in that the one end bar (22A, 22B) consists of a guided and at least one cantilevered area.

3. Housing according to claim 2, characterized in that the free edge of an outwardly facing cantilever surface (32A, 32B) with respect to the end strip guide (26A, 26B) pivots when closing.

4. Housing according to claim 3, characterized in that at least part of the cantilever surface (32A, 32B, 34A, 34B) is foldable and / or foldable.

5. Housing according to claim 4, characterized in that the at least one of the foldable and / or foldable part of the cantilever surface (32A, 32B, 34A, 34B) in Ab- depending on the position of the end bar (22A, 22B) is essentially opened or closed and / or folded by its own weight.

6. Housing according to claim 4 or 5, characterized in that the at least one foldable and / or foldable part of the cantilever surface (32A, 32B, 34A, 34B) by means of a mechanical device and / or a drive in its folding and / or folding movement is supported.

7. Housing according to one of claims 1 to 6, characterized in that a drive (44A, 44B) for opening and closing the side walls (16A, 16B) and the roof surfaces (18A, 18B) of at least one counterweight (66A, 66B) or another weight compensation device is relieved at least over a partial length of the stroke.

8. Housing according to claim 7, characterized in that the weight compensation device is designed such that the drive (44A, 44B) of the openable and closable side walls (16A, 16B) and the roof surfaces (18A, 18B) through a partial length of the stroke she is charged.

9. Housing according to claim 7 or 8, characterized in that at least the weight compensation device is designed depending on the position of the openable and closable side walls (16A, 16B) and the roof surfaces (18A, 18B) so that they have a different weight or - can exert stress.

10. Housing according to one of claims 1 to 9, characterized in that a winding shaft (24A, 24B) of the curtain (20A, 20B) in particular in a vertical guide (26A, 26 B) can be raised and lowered.

11. Housing according to one of claims 1 to 10, characterized in that a winding shaft (24A, 24B) on the curtain (20A, 20B) is fixed such that it is movable through the curtain (20A, 20B).

12. Housing according to claim 11 or 12, characterized in that the winding shaft (24A, 24B) driving winding drive (38A, 38B) is relieved of a counterweight (68A, 68B) or another weight compensation device.

13. Housing according to one of claims 1 to 12, characterized in that the curtain (20A, 20B) has at least one alloy forming a lubricating film, in particular a rubber alloy.

14. Housing according to one of claims 1 to 13, characterized in that the end bar (22A, 22B) is designed as a suction channel and / or is equipped with at least one suction channel.

15. Housing according to claim 14, characterized in that the suction channel in e.g. a closed position of the housing (10) connects to or is connected to a suction opening or mouth of a suction line.

16. Housing according to the preamble of claim 1, in particular according to one of claims 1 to 15, characterized in that at least one end bar (22A, 22B) by means of the curtain (20A, 20B) a winding shaft (24A, 24B) of the curtain at least partially bending stabilized.

17. Housing according to the preamble of claim 1, in particular according to one of claims 1 to 16, characterized in that at least one of the end walls (14A, 14B) has a closure opening (28) extending to the housing roof (18A, 18B), which in a closable roof opening (30) merges and that the end bar (22A, 22B) has a cantilever surface (34A, 34B) which at least partially closes and releases the roof surface opening (30).

18. Rolling door consisting of a curtain (20A, 20B) that can be rolled up at the lower end and an end bar (22A, 22B) that is guided at both ends, that keeps the curtain wide and raises and lowers it, in particular for a housing according to one of claims 1 to 17, characterized in that that the end bar (22A, 22B) has the characterizing features of at least one or more of claims 1 to 17.