CONSTRUCTION AID HAVING A PROTECTIVE DEVICE, AND PROTECTIVE DEVICE

Abstract

A construction aid and protective device for the construction aid are described herein. The protective device is configured to prevent objects from falling from the construction aid. The protective device includes a brush. The brush includes a brush head and bristles protruding from an upper side of the brush head. The bristles are arranged in one or more rows, and at least one of the one or more rows is wrapped in a net, a textile or a film.

Claims

1. Construction aid with a protective device that protects against falling out, characterized in that the protective device comprises a brush (1).

2. Construction aid according to the preceding claim, characterized in that bristles (7) of the brush (1) are wrapped in a textile, a film and/or a net (4).

3. Construction aid according to the preceding claim, characterized in that the textile, the film and/or the net (4) does not have an opening large enough for a bristle (7) or a bristle bundle to pass through it.

4. Construction aid according to one of the two preceding claims, characterized in that opposite sides of the textile, the film and/or the net (4) are connected to one another by one or more seams (5, 6).

5. Construction aid according to the preceding claim, characterized in that the distance between two parallel, adjacent seams (5, 6) is at least 5 cm and/or no more than 100 cm.

6. Construction aid according to one of the two preceding claims, characterized in that the seams (5, 6) run parallel to the brush head (2) of the brush (1) and/or perpendicular to the brush head (2).

7. Construction aid according to one of the preceding claims, characterized in that the bristles (3, 7) of the brush (1) are arranged in three rows and the bristles (7) of the middle row are wrapped in a textile, a film and/or a net (4).

8. Construction aid according to one of the preceding claims, characterized in that bristles (7) of a middle row are shorter than bristles (3) of outer rows.

9. Construction aid according to one of the preceding claims, characterized in that bristles (3, 7) are combined into bundles.

10. Construction aid according to one of the preceding claims, characterized in that the construction aid is a climbing scaffold.

11. Construction aid according to one of the preceding claims, characterized in that the protective device comprises walls (14) and/or grids and a gap (15) between two walls (14) and/or grids is closed by the brush (1).

12. Construction aid according to the preceding claim, characterized in that the brush (1) is attached only to one of the two walls and/or grids.

13. Brush for a construction aid according to one of the preceding claims, having a brush head (2) and bristles (7) protruding from an upper side of the brush head (2), characterized in that a row of bristles (7) is wrapped in a net (4), a textile or a film.

14. Brush according to the preceding claim, characterized in that there are at least three rows formed by bristles (3, 7) and the middle row is wrapped in the net (4), textile or film.

15. Brush according to the preceding claim, characterized in that the bristles (7) of the middle row are shorter than the other bristles (3).

16. Brush according to one of the three preceding claims, comprising a hook-and-loop strip (16) attached to an end (17) of the brush (1).

17. Brush according to the preceding claim, characterized in that the hook-and-loop strip can project at least 20 mm or at least 30 mm from the end (17).

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0005] FIG. 1 is a of a side view of a brush, according to an example embodiment.

[0006] FIG. 2 is a top view of bristles of the brush of FIG. 1 combined into bundles, according to an example embodiment.

[0007] FIG. 3 is a side view of a climbing scaffold with a protective device, according to an example embodiment.

[0008] FIG. 4 is a top view of a brush with closure at the end, according to an example embodiment.

[0009] FIG. 5 is a top view of brushes with connected closures, according to an example embodiment.

DETAILED DESCRIPTION

[0010] A construction aid is a tool that is used to construct buildings. Examples of buildings include buildings, bridges or walls. Cranes, scaffolding and formwork are used, for example, to construct such buildings. With such construction aids, there may be a risk that people and objects such as tools, bolts, screws, debris, etc. may fall from a great height. To avoid the associated risks, protective devices can be provided for construction equipment to protect against falling. Protective devices can comprise railings, gratings, nets, walls, etc.

[0011] There may be gaps between parts of a protective device, for example between two walls of a protective device. Since objects can also fall through gaps, a protective device may also comprise seals such as rubber lips to close gaps.

[0012] A formwork is a mold. Fresh concrete can be poured into the mold. Once the concrete has hardened, the formwork can usually be removed. For example, components of buildings or bridges can be produced in this way. Examples of such components are walls, ceilings, shafts and columns.

[0013] A formwork can be formed from a plurality of formwork panels. A formwork panel is a panel consisting of wood or plastic, for example. Supporting elements may be present on the rear side of the panel, for example a frame, longitudinal beams and/or cross beams. The supporting elements may consist of wood or steel, for example.

[0014] A frame of a formwork panel generally does not protrude from the front of the panel. A formwork panel may comprise one or more anchor holes. In a formwork, an anchor can be inserted through opposite anchor holes. The ends of an anchor can be secured in such a way that an anchor can then no longer be pulled out of the anchor holes. The two ends of an anchor can be attached to the backs of formwork panels, for example, in such a way that an anchor can at least absorb compressive forces, preferably also tensile forces. Two opposing formwork panels can be connected to each other by means of one or more anchors.

[0015] An example of a construction aid is a climbing scaffold. A climbing scaffold can be attached to an already completed section of a structure. A part of the climbing scaffold can be moved upwards and held. A platform may be attached to the climbing scaffold, which can be moved to a desired height. The platform can be accessible. One or more formwork panels can be provided on the platform in order to form a formwork. A protective device can be attached to the platform to protect against falling. A climbing scaffold with other components attached to it, such as a platform, formwork panel and/or protective device, is called a climbing system.

[0016] The devices described herein include a construction aid with a protective device that advantageously protects people and objects from falling from the platform.

[0017] The task is solved by a construction aid with a protective device that comprises a brush. A brush comprises a brush head that may consist of wood, metal or plastic, for example. Bristles protrude from an upper side of the brush head. The bristles can be bent elastically. The bristles may consist of natural fibers, synthetic fibers and/or metal.

[0018] As shown in the figures below, a gap between the platform and the formwork panels can be covered by the bristles of a brush so that objects cannot fall down through the gap. The gap can be between two devices that are provided for protection, for example. If one side of a gap is moved relative to an opposite side of the gap, only small frictional forces need to be overcome in an advantageous manner. Also, in the case of movements, there is little risk of damaging the bristles. Bristles can adapt very flexibly to unevenness.

[0019] For example, a sealing lip consisting of rubber can be manufactured more easily than a brush. However, a brush can be particularly advantageous in the case of relative movements, which justifies the higher manufacturing effort.

[0020] The bristles of the brush may be wrapped (enveloped) by (in) a flexible sheath. The sheath may comprise a textile, a film and/or a net (mesh). The sheath and/or the textile, the film and/or the net improve the protective effect. Objects are prevented by the sheath from passing through the bristles in an improved manner. The textile, film or net consists of a pliable material. The textile, film and/or net may consist of plastic, natural material and/or metal.

[0021] A film is a flat structure made of very thin metal or plastic. The film can be completely closed or perforated.

[0022] A textile is a flat structure produced from fibers, threads or yarns. The flat structure may have been produced by weaving, felting, crocheting or knitting. The textile can therefore be a woven fabric, a knitted fabric or a fleece, for example.

[0023] A net is a flat structure made of fibers, threads or yarns with meshes. The fibers, threads or yarns can be linked or knotted together.

[0024] The fibers, threads or yarns of a textile or net may consist of synthetic fibers, natural fibers and/or metallic fibers.

[0025] The sheath should preferably not have an opening large enough for a wrapped bristle to pass through (e.g., a diameter of the opening in the sheath is smaller than a diameter of the wrapped bristle). The bristles of the brush may be bundled together. In this case, it may be sufficient for the sheath not to have an opening large enough for such a bundle of bristles to pass through (e.g., the diameter of the opening is smaller than the diameter of the bundle of bristles). This ensures that the bristles are and remain fully wrapped at all times. The functionality of the brush can be ensured in the long term in an improved manner. For example, if a net is wrapped around the bristles, then the mesh size of the net may be smaller than the diameter of the bristles and/or smaller than the diameter of a bristle bundle.

[0026] Opposite sides of the sheath may be sewn together with one or more threads or yarns. The stability and thus the protective effect can be further improved in this way. Opposite sides of the sheath can be connected to each other by other seams, such as welds. Alternatively, seam-shaped connections of opposite sides of the sheath can be created by gluing or stapling in order to improve stability and thus the protective effect.

[0027] In some embodiments, the distance between two parallel, adjacent seams is in a range of 5 cm to 100 cm in order to achieve a good protective effect. For example, the distance between two parallel, adjacent seams is no more than 50 cm or no more than 30 cm.

[0028] The seams may, for example, run parallel to the brush head of the brush and/or perpendicular to the brush head. Parallel to the brush head means parallel to the upper side of the brush head from which the bristles protrude. Perpendicular to the brush head means perpendicular to the upper side of the brush head from which the bristles protrude.

[0029] The brush bristles can be arranged in three rows. The bristles of the middle row can be wrapped in a flexible sheath. The sheath then only envelops the middle row. The bristles of the two outer rows then protect the sheath from damage. The protective effect is thus further improved, to make the bristles more long-lasting.

[0030] There may be three brushes instead of just one brush with three rows of bristles. Each brush may therefore comprise one row of bristles. One brush, preferably with shorter bristles, may comprise a flexible sheath. The flexible sheath can envelop the bristles. This brush can be arranged between the other two brushes such that the sheath of the middle brush is protected by the adjacent bristles of the other two brushes.

[0031] In some embodiments, the bristles of the middle row and/or the middle brush are shorter than the bristles of the outer rows and/or the other two brushes. The sheath fits around the bristles in such a way that the sheath does not protrude beyond the bristles of the outer rows either. The sheath is therefore protected against damage particularly reliably. The protective effect is thus further improved, to make the bristles more long-lasting.

[0032] However, bristles of the brush can also be arranged in only one or two rows. There is then only one row or only two rows formed by the bristles of a brush. Even if there are only two rows, one row can serve as protection for the other row. In this case, the protective effect can be limited to only one side, which usually means that care should be taken during mounting to ensure alignment. The bristles of the other row can then be surrounded by a flexible sheath. The bristles that are surrounded by a flexible sheath can be shorter than the other bristles. There can also be more than three rows.

[0033] There may be two brushes instead of just one brush with two rows of bristles. Each brush may therefore comprise a row of bristles. One brush, preferably with shorter bristles, may comprise a flexible sheath. The flexible sheath can envelop the bristles. This brush can be arranged adjacent to the other brush in such a way that the sheath of one brush is protected by the adjacent bristles of the other brush.

[0034] Bristles of the brushes can be combined into bundles. A bundle is formed by several bristles. There is only a small distance between two adjacent bristles of a bundle compared to two adjacent bristles belonging to two different bundles. This achieves a particularly good protective effect, since bristles that are combined into bundles are particularly resistant. Nevertheless, excessively large frictional forces that can occur during relative movements are avoided.

[0035] Bristles may be glued together, at least locally, in order to prevent objects from passing through the bristles in an improved manner.

[0036] The construction aid may be a climbing scaffold. The climbing scaffold may be attached to a completed section of a building. Once the climbing scaffold has been attached to a completed section of a building, one or more climbing rails of the climbing scaffold can be moved upwards. If a platform is attached to one or two climbing rails, the platform can be moved up together with the climbing rails. The platform may comprise a protective device that comprises one or more walls, one or more gratings, one or more sheets, one or more framed nets, etc. The brush can be attached to a wall, a grid, a metal sheet or to the frame of a net in such a way that the bristles protrude from the wall, grid, sheet or frame. However, a climbing scaffold can also be designed in such a way that it can climb downwards as an alternative or in addition. Such a climbing scaffold can be useful for demolishing a building.

[0037] Relative movements can occur as planned in or during regular operations of climbing systems. Therefore, the provision of a brush to close gaps in climbing systems is particularly advantageous.

[0038] A gap between two walls, gratings, sheets or framed nets of a protective device can be closed by the brush. The bristles of the brush can rest against (contact) a wall, a grating or the frame of a framed net to which the brush is not attached. In this case, relative movements between two walls, gratings and/or frames of framed nets are particularly easy and safe without endangering the protective effect. The brush can therefore only be attached to one of two walls, gratings, sheets and/or framed nets. A gap between a part of the construction aid and a wall, ceiling or floor of a structure can be closed or have been closed by the brush. The brush can contact (bear against) the wall, ceiling or floor to close it. There may be an overlap area between the brush on one side and the wall, ceiling or floor on the other.

[0039] A wall is a flat component that can delimit a room or separate it into two sections. It is usually a vertically installed flat component that serves as the lateral boundary of a room. However, the term wall also comprises differently aligned flat components. It can also be a flat component in a horizontal plane. It can then serve as a floor or ceiling, for example.

[0040] Climbing scaffolds with formwork panels, also known as climbing formwork for short, and/or climbing scaffolds with protective devices are used in the section of building construction, for example for the construction of high-rise buildings. High-rise buildings can then be built particularly quickly. Formwork panels or a formwork can be moved vertically without blocking a crane. For example, the use of climbing formwork, which may comprise climbing protection panels, can occur in high-rise construction and on cramped inner-city construction sites.

[0041] The climbing scaffolds may be rail-guided climbing formwork, in which climbing shoes attached to the concrete guide the climbing rail. Climbing rails can be firmly connected to a climbing platform.

[0042] For high-rise structures, protection against falling objects such as tools, components or debris is particularly important. Walls attached to climbing scaffolds, also known as climbing protection walls, may be covered with tarpaulins or close-meshed nets for this purpose. Weak points are mainly vertical joints between individual units of the climbing formwork platforms or climbing protection walls. From a technical point of view, gaps are often necessary to enable the individual units to climb safely and, in particular, to avoid the units getting stuck during the climbing process. Gaps of at least 5 cm are common. Gaps may therefore have a width of at least 5 cm. The bristles of a brush should therefore have a length of at least 5 cm, preferably at least 10 cm. However, a length of more than 30 cm should be avoided for reasons of stability.

[0043] To ensure that the bristles are sufficiently inherently stable, the bristles may have a diameter of at least 0.5 mm, preferably at least 1 mm. To ensure that bristles are sufficiently elastically flexible, the diameter of a bristle may be less than 5 mm or less than 3 mm.

[0044] Gaps may vary greatly in width, even within a single construction project. The main reason for these variations is inaccuracies in the placement of the anchorages of the platforms or units. Such gaps can be closed with flexible covers, such as rubber flaps, films or nets. However, such covers can open even in light winds and often do not provide sufficient resistance in the event of an impact from a falling object. Such problems can be avoided by attaching covers on both sides of a gap. However, the attachment on at least one side of the cover must then be loosened again before one of the two neighboring platforms or climbing walls climbs up. In addition, these covers must be folded back and secured when climbing to avoid getting caught and torn off. Such work is very laborious and sometimes has to be done at great heights, which may then require the use of bucket trucks or similar. Furthermore, this work must be carried out and checked very thoroughly, otherwise the cover could open by itself, in which case safety would no longer be guaranteed.

[0045] Fixed metal or plywood cover plates can provide greater safety and rigidity. Fixed cover plates are able to absorb impacting objects quite safely. However, to climb, these must also be opened by hand and secured against unintentional closing during the climbing process. Furthermore, there are problems if the anchorages of the climbing units are installed inaccurately in height, since then, under certain circumstances, flaps may not be closable.

[0046] Sealing by means of special rubber sealing lips is also possible. Such rubber sealing lips may consist of large rubber extrusion profiles and can be attached on both sides of the gap on climbing systems that comprise climbing scaffolds and protective devices. The size of the rubber lips can be designed to the nominal size of the gap, wherein the size can be chosen so that the two lips overlap by a few centimeters. However, this also inevitably results in a fixed nominal size of the gap between the climbing units when using the sealing profiles. If, however, there is a deviation from this nominal size, for example due to the above-mentioned reasons, problems may arise during climbing or the sealing effect may no longer be present. If the gap is smaller than the nominal size, the units can get stuck and the sealing lips can tear off. If the nominal size is exceeded, the lips may no longer overlap, which means that protection is no longer provided.

[0047] To avoid an excessively long brush and the associated manufacturing and handling difficulties, two brushes can be arranged one behind the other. One end (joint) of the first brush can then adjoin the end of the second brush, thus being able to cover gaps that are longer than a single brush.

[0048] To avoid a gap between two ends, an end may comprise a closure means with which a gap between two ends can be avoided. For example, each end may comprise a closure means. Each closure means can be connected to another closure means, for example, in such a way that a gap between two ends is avoided.

[0049] A tape can form a closure means. A tape at an end of a first brush can be connected to a tape at an end of a second brush so as to avoid an opening between two ends. A tape is advantageously flexible in order to be able to cover openings of different sizes. Each tape can be designed so that a gap of up to 30 mm or up to 25 mm between two ends can be closed by one or more tapes.

[0050] In order to connect one tape to another, hook-and-loop strips may be provided. Two hook-and-loop strips can be connected to each other by hook-and-loop fastening and, if necessary, can be disconnected from each other.

[0051] A magnet may be attached to a tape. The magnet can, for example, be connected to a magnet of another tape in order to close a gap between two ends of two brushes. One end of a brush may consist of or comprise a ferromagnetic material. The magnet of a first brush can then be connected to the ferromagnetic material of the second brush by magnetic forces, thus avoiding a gap between two ends of two brushes.

[0052] A closure means may be formed by a spring that is present at the end. The spring can be pressed against the end of another brush or against the spring at the end of another brush to avoid a gap between two ends.

[0053] The protective device described herein avoids the aforementioned problems and offers a simple and safe way to seal gaps at which relative movements can occur. In particular, the invention relates to the sealing of vertical gaps between different climbing systems. The bristles of the sealing brushes can be flexible enough to avoid obstacles such as platform coverings or edges in the cladding when climbing. At the same time, they can also be stable enough, together with a mesh insert, to prevent small parts that fall or rebound from somewhere from breaking through the seal. Due to the flexibility of the bristles, the seals can be designed to overhang a gap in such a way that it is still securely closed even if the width of the gap is larger than planned or if side protection elements have shifted relative to one another. When climbing one unit, the brushes can easily avoid platform coverings from opposite units. Sealing of the vertical gap is ensured at all times (e.g., as the climbing scaffold moves along a side of a building).

[0054] The sealing by brush is simple and robust. The sealing by brush can adapt to different gap widths and can avoid obstacles when climbing. Installation of a sealing brush is very simple and flexible. The construction is maintenance-free. It does not need to be opened or extensively checked around the climbing. It is advantageously possible to use a brush multiple times, which keeps the technical effort and thus the costs low. The invention thus provides a simple and cost-effective way to provide a reliable vertical seal. The robustness of the bristles and the protection of the possibly decisive middle bristles by outer bristles makes the construction resistant to damage. It is even possible to use brushes multiple times on successive construction projects.

[0055] Advantageously, the protective device described herein can be flexibly applied to all climbing systems and is not bound to a specific system.

[0056] For solving the task, the invention also relates to an arrangement for a preferably vertical seal in a climbing formwork system or a climbing protection panel and/or between two climbing formwork systems and/or climbing protection panels. The climbing formwork systems or climbing protection panels may be equipped with side protection elements. There may be a gap between side protection elements of at least two adjacent climbing formwork systems and/or climbing protection walls, which has a planned nominal dimension. The actual width of the gap may differ from the nominal dimension. The gap can be completely closed by the brush. The brush can be attached to only a first side protection element. The bristles of the brush can be so long that they extend that far over the edge of the second side protection element that the gap is reliably closed even if the width of the gap differs from the nominal dimension. The attachment and design of the brush then allows the two adjacent side protection elements to be displaced against each other and primarily along or in the longitudinal direction of the gap.

[0057] It may be sufficient for bristles of the brush that the bundles of bristles do not fit through the mesh of a net or through holes of another sheath (e.g. film or textile). The bristles' thickness and material are preferably chosen such that the bristles, or at least bundles of bristles, are able to hold the sheath, e.g. a net, in place. The sheath may be firmly attached to the brush head on both sides of the central bristles.

[0058] One or more seams can be sewn together at least partially in such a way that the one or more seams prevent even a partial displacement of the sheath with respect to the bristles or bristle bundles. At least some of the bristles can be forced to follow the displacement of the sheath and thus be bent when the sheath is even partially displaced. The thickness and material of the bristles and/or bristle bundles can be chosen so that they are able to reverse the displacement of the sheath after it has been released.

[0059] As an alternative or in addition to seams, opposite sides of a sheath can also be connected to each other locally in other ways. For example, opposite sides of the net or other sheath can be connected by clips or similar components. Opposite sides of a net or other sheath may be glued or welded to each other. Opposite sides of the net or other sheath may be connected by nets or textile strips or similar components that are attached between the two sides of the net or other sheath for this purpose.

[0060] At least one of the sides of the net or other sheath may be at least partially glued or welded to individual wrapped bristles or bundles of bristles. The thickness and material of the wrapped bristles or bundles of bristles may be chosen so that they are able to reverse a possible displacement of the net and/or other sheath after it has been released.

[0061] The net or other sheath need not completely envelop (encase) individual bristles in order to achieve beneficial effects. It is already beneficial if only individual bristles or bristle bundles are enveloped by a sheath. Other bristles or bristle bundles can alternatively or additionally be glued or welded together at least locally so that objects are prevented from passing through the bristles.

[0062] The provision of elastically flexible bristles on the brush minimizes frictional forces that can occur during climbing, for example. This allows for large overlaps, such as a large overlap between bristles of the brush and a peripheral region of a wall or a grid. Large overlaps provide a high level of security (e.g., in catching objects). Low frictional forces can prevent damage (e.g., to the bristles). In the case of a climbing system, relatively low forces can advantageously suffice for climbing upwards. The energy required for climbing can thus be kept low and/or the hydraulic or other components provided for climbing can be of a particularly simple design.

[0063] The elastically flexible bristles of the brush can straighten up at obstacles independently and very reliably and thus close or at least minimize a gap very reliably before and after an obstacle. The elastically flexible bristles of the brush can therefore also adapt very well to changing gap sizes (e.g., by bending or straightening to accommodate for different distances between objects).

[0064] The brush can close a gap in any direction, for example, a horizontal gap or vertical gap. If the brush is part of a climbing system, the brush allows both upward and downward climbing. A flexible sheath for the brush's bristles provides a puncture protection.

[0065] Referring now to FIG. 1, showing a partial side view of a brush 1, according to an embodiment. The brush 1 comprises a brush head 2. Bristles 3 combined into bundles project from an upper side of the brush head 2. The bundled bristles 3 are arranged along a row and attached to the brush head 2. Behind the bristles 3, there is a net 4 that envelops a middle row of bundled bristles. The net 4 is attached to the brush head 2. The bundled bristles 3 project past the net 4. The bristles enveloped by the net 4 (e.g., the bristles 7 of FIG. 2) are consequently shorter than the bundled bristles 3. Opposite sides of the net 4 are sewn together. The seams 5 run parallel to the brush head 2 of the brush 1. The seams 6 run perpendicular to the brush head 2 of the brush 1.

[0066] FIG. 2 shows a partial view of the bristles 3, 7 of the brush 1 combined into bundles (e.g., a plurality of bristles 3, 7 grouped closely together, attached locally to one another, etc.). There are three rows formed by bristles 3, 7. The three rows run parallel to each other. The bristles 7 of the middle row are shorter than the bristles 3 of the two outer rows. The mesh size of the net 4 is smaller than the diameter of a bristle 7. A bristle 7 can therefore not extend out of the net 4. As shown in FIG. 2, the bristles 3, 7 of one bundle are spaced from bristles of an adjacent bundle. Bristles 3, 7 within a bundle, in comparison, have a very small distance between them (e.g., such that the bristles within a bundle abut one another).

[0067] FIG. 3 shows a climbing scaffold 8 with climbing rails 9 that are guided and held by climbing shoes 10. The climbing shoes 10 are attached to an already completed section 11 of a structure to be built. Two climbing shoes 10 are arranged one above the other to guide a climbing rail 9 vertically. A hydraulic cylinder can be attached with one end to a climbing shoe and with the other end to the climbing rail. When the hydraulic cylinder is extended, the climbing rail 9 is moved upwards. A climbing shoe 10 may comprise a pivotable hook by which a climbing rail 9 is prevented from moving downwards. When the climbing rail 9 is moved upwards, the hook is pivoted out of its securing position. When the climbing rail 9 has been moved upwards, the hook pivots back into its securing position and the climbing rail 9 is held again by the hook. The climbing rail may comprise horizontally arranged bolts, one above the other, which can be held by the hook so as to secure the climbing rail.

[0068] A platform 12 can be attached to the upper side of two climbing rails 9 arranged next to each other. The platform 12 can comprise one or more panels that are arranged horizontally. The panels may consist of wood, plastic or metal. The platform 12 is accessible (e.g., by a user or users) and can protrude outwards from the upper edge 13 of the already completed section. A wall 14 can be attached to the outside of the platform 12, which protects people and objects from falling down/off the platform 12.

[0069] There may be a variety of climbing scaffolds with platforms 12 and walls 14 next to each other. There may be a scheduled (e.g., preset) gap 15 between two walls 14 of two climbing systems. To prevent objects from falling through this gap 15, the brush head 2 of a brush 1 can be attached to one of the two walls 14. The bristles 3 then rest against the other wall 14, thus covering the gap 15. Nevertheless, one wall 14 can still be moved upwards relative to the other wall 14.

[0070] FIG. 4 shows a brush 1 with closure means 16 at its ends 17. A closure means 16 can be connected to another closure means 16 to close a gap between two ends 17. In some examples, the closure means 16 is hook-and-loop strips. The closure means 16 can, for example, be attached to the net 4, which envelops the middle bristles 7. FIG. 4 shows a top view of the edge side of the tapes. The width of each tape can extend over the entire length of the bristles 7 to close a gap such that no object can pass through the gap.

[0071] FIG. 5 shows a first brush 1 with closure means 16 and a second brush 1 with a closure means 16. The two brushes 1 are arranged one behind the other in order to be able to close a gap that is longer than each individual brush 1. The one closure means 16 is connected to the other closure means by a hook-and-loop fastener. The closure means can be used to close a gap between the two brushes in such a way that an object is avoided from passing through the gap. For example, the gap can be up to 20 mm or up to 30 mm wide. The closure means 16 can therefore protrude at least 20 mm or at least 30 mm from the respective end 17 in order to close such gaps.