EP2326772B1 - Holder for attachments on barrier fences and barrier fence - Google Patents

Description

The invention relates to a holder for attachments, especially warning lights, to fall protection of construction sites according to the features in the preamble of claim 1 protection and a suitable fall protection for such a holder.

From the EP 1 388 612 B1 is a fall protection for securing road construction sites known, with an arranged between vertical supports barrier sheet, which is formed by a blow body made of plastic. On the upper side of the barrier leaf, pegs for attaching warning lights project in a uniform grid over the entire width of the fall protection. It is considered disadvantageous that no variations in the number of attachable warning lights are possible by the fixed grid. In addition, the top of the barrier sheet in the construction site area can not serve as a smooth handrail, which is a drawback especially for disabled people who need to pass the fall protection.

From the DE 20 2006 005 206 U1 An adapter for attaching warning lights on barriers is known. The adapter is configured T- or L-shaped and has an upwardly projecting pin and a sleeve-shaped cross piece for attachment to a barrier sheet or spar of the barrier. The sleeve forms a tubular body with a longitudinal recess for attachment to the barrier sheet or the spar, wherein the sleeve on both sides forms cheeks which enclose an angle greater than 180 °. With such an adapter warning lights in the required number along the entire length of the barrier can be placed anywhere. In addition to the resilient cheeks, which are necessary to hold the sleeve or the adapter clamped to the barrier sheet, fastening bolts may be provided to connect the adapter with the barrier sheet.

In addition to the previously mentioned variants, there are a whole series of further embodiments which can be subdivided essentially into four groups. First, there are prepared in the blow molding fall protection with firmly molded pin. If the warning lamp holders are twisted by vandalism, the pins on the barrier sheet usually tear off, so that the fall protection as such is no longer usable.

In a second group, the warning lamp holders are riveted or screwed to the barrier sheet so that they are permanently connected to the barrier sheet. The mounting holes are drilled only when necessary. Such fall protection is only very limited variable.

In another group, the warning lamp holders are inserted from above or laterally on or into the barrier sheet. For this purpose, pockets, depressions or similar recesses for plug devices are provided on the fall protection. The disadvantage is that the handrail is not smooth. In addition, the handrail is interrupted at the recessed areas and forms a weak point of the fall protection.

Finally, there is the group of screwed on and off warning lamp holder, as for example in the DE 20 2006 005 206 U1 to be discribed.

Another example of this is in the JP 61169120 U discloses a holder for attachments, which has angularly spaced cheeks, the can be coupled via a fastening bolt with the top of a round cross-section barrier sheet.

In addition to rounded barrier leaves, there are also those in which the opposite edges of the barrier sheet are at an angle to each other, so that a trapezoidal shape results ( JP 2002 371525 A ).

The invention is based on the object to show a holder for attachments, especially warning lights on fall protection, which does not lead to a weakening of the structure of the fall protection, easy on and degradable, does not lead to interruptions in the handrail and at the same time is cost-effective.

This object is achieved in a holder with the features of claim 1. A suitable fall protection with such a holder is the subject of claim 13.

Advantageous developments of the inventive concept are the subject of the dependent claims.

The holder according to the invention is characterized in that it is on the one hand aufsteckbar on a barrier sheet and thus is not permanently connected firmly with the barrier sheet. For this purpose, the holder has a foot with cheeks spaced apart from one another, wherein the cheeks can be coupled to the barrier sheet via at least one fastening bolt and / or by adhesive bonding. The cheeks of the holder have mutually facing contact surfaces whose surface normals are at an angle which is in a range of 90 ° to 160 °, preferably in a range of 130 ° to 150 °, and in particular between 140 ° and 150 °. The mutually facing, inclined contact surfaces should rest on support surfaces of the barrier blade, which are at the same angle to each other as the contact surfaces. The contact surfaces are preferably planes. In this way, not only the weight of the mounted warning lights can be transferred flat to the support surfaces of the barrier sheet, but it can be made by the somewhat wedge-shaped or conical configuration, a substantially full-surface contact, so that the holder wedge with the barrier sheet and very securely fixed. The wedge shape is not to be understood as meaning that the upper edge of the barrier blade is tapered. Rather, a relatively flat design for the forked foot of the holder is advantageous, so that the connection area for the holder, ie the upper portion of the barrier sheet, is configured in the cross section substantially trapezoidal. So it does not come to a grasping behind the barrier sheet. The holder can be lifted in the absence of fastening bolts only against gravity, ie without overcoming any clamping forces from the spar. The cheeks of the holder according to the invention lie on the outside of the barrier sheet, so that the barrier sheet must have no recesses or similar interruptions. This allows the handrail of the barrier sheet to be made smooth. Smooth in this context means that the handrail, so the top of the barrier sheet, extends over its entire length from one end to the other end of the barrier sheet at a height and has no protruding or recessed areas. At the same time, by avoiding recesses or pockets, weak points in the structure of the fall protection are avoided. The number of holes for the fastening bolts is limited to a small number, preferably to 5 holes. Further drilling is possible.

As a very significant advantage of the holder according to the invention, it is considered that its width measured transversely to the barrier sheet is preferably not greater than the width of the barrier sheet. This does not mean that the barrier sheet for the holders must have recesses. Rather, the barrier sheet in the region of its upper edge to which the holders are attached, over its entire length uniform width. However, the width at the upper edge is less than the width of the holder in the lower region, so that the holder in width does not apply over the maximum width of the barrier sheet. This has the advantage that the barrier leaves can be stacked close to each other or even one above the other. The barrier leaves can not get caught, jammed or scratched in the area of the holders. The packing density of the fall arresters equipped with the holders according to the invention is high, but at least as high as in fall arresters without holders. It will be part of the Invention not excluded that also holders can be used, which have a greater width than the fall protection supporting them.

It is envisaged that the cheeks of the holder are connected to each other via a transverse web, which extends in the installed position at a distance and parallel to an upper web of the barrier sheet. The spacing of the transverse web from the upper web ensures that the cheeks always lie flat on the support surfaces. The upper transverse web between the cheeks and the upper web of the barrier sheet preferably runs horizontally. It is also conceivable that the webs are arcuately curved, but still at a distance from each other. As a result, in the context of the invention, even a top-rounded handrail can be provided on the fall protection.

It is, however, considered advantageous if the upper web extends horizontally, because in this configuration, a fastening bolt extending between the cheeks for fixing the barrier blade from the inside in line contact against the upper web can be supported. Therefore, the holes for the fastening bolts should be located very close to the upper edge of the cheeks. This makes it possible to accommodate a securing element for fixing the fastening bolt in the cheeks, that neither the fastening bolt nor the securing element protrudes beyond the outer contour of the holder in the installed position.

The holes can also be provided with a wall which forms a channel in the barrier sheet. The channel can be made by projecting a pin into the mold cavity during injection molding. It can also be provided two opposing bolts, which are removed from each other when opening the mold cavity. Due to the manufacturing process remains between the end faces of two bolts or between the end face of a bolt and the mold cavity a small gap that fills with plastic. This plastic bar must be removed, which is easiest by drilling possible. The wall of the channel allows the bolt to support itself over a much larger area. The surface pressure is much lower than with a bolt, which is supported only on the drilled surfaces. The bolt can therefore not tear out so easily.

In a bolt, the securing element may be a threaded portion which is formed directly on the holder. It can also be a nut fixed in the holder. The fuse element is not necessarily a thread. It can also be a locking element in the manner of a bayonet lock with a fastening bolt, wherein the securing element has at least one locking projection, which corresponds to a locking lug on the fastening bolt. By pivoting the fastening bolt about its longitudinal axis, for example by 180 °, the holder according to the invention can be quickly and safely fixed to the barrier sheet. The fastening bolt is preferably captively connected to the holder.

Additional security against the theft of warning lights can be created by the fact that the fastening bolts can only be operated with a special tool.

Depending on the load, the fastening bolt may be made of metal. However, it can also be a plastic component. In principle, it can not be ruled out in the case of the fall protection according to the invention that holders are torn off by vandalism. In this case, however, there is still the possibility that due to the entire area of the cheeks on the support surfaces of the foot can be glued to the fall protection. As a result, the fall protection is virtually repairable.

In the invention, the bond between the cheeks and the spar can be provided from the beginning. For this purpose, the contact surface should be sufficiently large. The adhesive used can lead to a permanent connection between the holder and the spar. This is usually the case with suitable liquid adhesives. The adhesive to releasable bond may also be a viscoelastic mass, wherein the adhesive property of their surfaces is canceled by tensile stress parallel to the glued surfaces. However, the adhesive bond can also be made detachable, for example by using an adhesive which is arranged on a carrier film. It may in this case be a double-sided adhesive tape.

An advantage of the bond is that the bolt connection is relieved or even replaced. Another advantage is that even without additional holes additional holders can be mounted on the fall protection. It is assumed that in the spar only a limited number of holes are arranged, such. 5 equidistant holes. Of course, can also subsequently create more holes. The alternative is gluing.

The holder according to the invention is used in particular in barrier sheets produced in the blow-molding process, wherein these barrier sheets consist of a relatively soft plastic material as a result of the production process. It is considered expedient if the holder is made of a material which has a greater hardness and thus resistance than the material of the barrier sheet. This does not exclude that the fall protection has harder components, such as side supports, which are usually made of metal.

Of course, the holder according to the invention has a mounting option for an attachment, in particular a warning light on. This is preferably a pin projecting upwards from the foot. This pin can be provided with at least one transverse bore to fix the warning light captive on the pin and thus on the holder or the fall protection. The pin should of course not be wider than the foot and thus not be wider than the barrier sheet or the fall protection, so that equipped with the holders according to the invention fall protection can be easily and tightly stacked next to each other or on top of each other.

Figur 1

eine Schnittdarstellung durch den erfindungsgemäßen Halter, montiert auf einem Schrankenblatt;

Figur 2

den montierten Halter der Figur 1 in der Seitenansicht;

Figur 3

den Halter der Figuren 1 und 2 in der Draufsicht;

Figur 4

eine Schnittdarstellung gemäß Figur 1 durch eine weitere Ausführungsform eines Halters auf einem Schrankenblatt und

Figur 5

eine Schnittdarstellung durch eine weitere Ausführungsform.

The invention will be explained in more detail with reference to an embodiment shown in schematic drawings. Show it:

FIG. 1

a sectional view through the holder according to the invention, mounted on a barrier sheet;

FIG. 2

the mounted holder of the FIG. 1 in the side view;

FIG. 3

the holder of FIGS. 1 and 2 in the plan view;

FIG. 4

a sectional view according to FIG. 1 by a further embodiment of a holder on a barrier sheet and

FIG. 5

a sectional view through a further embodiment.

FIG. 1 shows a holder 1, as it is mounted on a fall protection 2. Of the fall protection 2, only the Blasformverfahren made of plastic barrier sheet 3 is shown with an upper rail 4, on which the holder 1 is fixed with his foot 5. The spar 4 has over its entire length a constant cross-section, which can be referred to as trapezoidal. In any case, the spar 4 tapers from bottom to top. For the purposes of the invention, the spar 4 forms the uppermost part of the barrier sheet 3.

The holder 1 comprises in addition to his foot 5 an upwardly projecting pin 6 with two transverse bores 7, 16 for fixing a warning light, not shown. The pin 6 is formed circular cylindrical. The foot 5 is divided into two cheeks 8, 9, which contact the barrier sheet 3. For this purpose, the inclined contact surfaces 10 of the cheeks 8, 9 are on support surfaces 11 of the spar 4. Surface normals N on the flat contact surfaces 10 are at an angle W to each other. The angle W is less than 180 ° and is not greater than 180 ° in any area of the contact surfaces. Even if the contact surfaces are curved, the surface normals of tangents applied to the curve would not exceed an angle W of 180 °.

The opposing support surfaces 11 are at the same angle to each other as the contact surfaces 10. As a result, the cheeks 8, 9 over the entire surface. In this embodiment, the foot 5 encompasses almost the entire beam 4, but without enclosing it, and is additionally connected thereto by a bolt 4 passing transversely through the spar 4. It is a bolt whose head is completely embedded in the foot 5. In this embodiment, the width B of the foot 5 is chosen so that it is not greater than the width B1 of the spar 4. Overall, the holder 1 including the pin 6 is thus maximally as wide as the spar 4 or the entire fall protection 2. Of course, in the context of the invention is not excluded that the holder can also be wider than the fall protection.

The / angle W is in this embodiment 145 °, the top of the spar 4 is not pointed, but is flattened horizontally. It can be seen that the contact surfaces 10 of the cheeks 8, 9 do not meet at an acute angle to each other, but are connected to each other via a transverse web 13, in the illustrated installation position in a vertical distance parallel to an upper web 14 of the barrier sheet third runs. Directly below the upper web 14 of the barrier sheet extends the fastening bolt 12, which is supported under load on the inner side of the web 14. As a result, the holes in the support surfaces 11 of the spar 4 are subjected to lower forces under tensile load, since the fastening bolt 12 is supported on the circumference of the upper web 14. The fastening bolt 12 itself is held by a nut 15, which is embedded in a cheek 9. The nut 15 is representative of any shape of a securing element, which allows a positive fixation of the fastening bolt 12 within the cheeks 8, 9 and thus within the outer contour of the foot 5. Below the holder 1 is a reinforcement 17 in the form of a directed towards the interior of the barrier sheet 3 invagination.

FIG. 2 shows the holder 1 of FIG. 1 in a page presentation. It can be seen that a second transverse bore 16 is provided on the pin 6. It also becomes clear that the holder 1 does not completely encompass the bar 4, but is only placed substantially in its upper half. The dashed horizontal line in the lower region of the spar 4 represents the widest point of the spar 4. The holder 1 and the foot 5 does not engage over the widest point, so that the cheeks 8, 9 a maximum of 180 °, based on the horizontal, enclose. Below the holder 1 there is a reinforcement 17 in the form of a circular press-in to stiffen the area of the barrier sheet 3 due to the additional load of the warning light.

FIG. 3 shows the holder 1 in plan view. It can be seen that the pin 6 has a circular geometry, while the foot 5 of the holder 1 is configured substantially rectangular. In this embodiment, its is in the longitudinal direction The length measured by the spar 4 is slightly greater than a width measured transversely to the spar 4.

FIG. 4 shows in the same way as FIG. 1 the identical holder as it is mounted on a fall protection 2. This embodiment of fall protection differs from that of FIG. 1 in the embodiment of the connecting region between foot 5a and spar 4a. The differences lie in the different construction in the region of the fastening bolt 12a. The fastening bolt 12a passes through a channel 18, the wall 19 of which surrounds the illustrated fastening bolt 12a. The fastening bolt 12a thus supports differently than in the embodiment of the FIG. 1 not at pierced side surfaces of the barrier sheet 3, but on the wall 19 of the channel 18th

The continuous channel 18 is not initially continuous, so closed. Production-related condition is in the middle of a dot-dashed web 20, which is drilled or punched out, so that the fastening bolt 12 a can be passed through the channel 18. In this embodiment, only a single, centrally located bore is required. The channel 18 serves as additional stiffening of the barrier sheet 3a and gives it a higher stability. The regions of the channel 18 which are arranged centrally in this case are arranged in a slightly conical manner. This is due to draft of the forming bolts used for the production. The holder 1 differs except for the taper of the holes 21 for the fastening bolts 12 a and the securing elements 15 a from that of the FIG. 1 , He is not particularly adapted to the channel 18 or at all to an opening / depression in the barrier sheet 3a, in the sense that the holder 1 engages the barrier sheet 3a.

The barrier sheet 3a has analogous to FIG. 1 a reinforcement 17 a, which in contrast to the embodiment of the FIG. 1 has a smaller diameter and is arranged directly below the spar 4a.

FIG. 5 shows a further embodiment of the foot 5b in the connecting region with the spar 4b. Here, the channel 18a is configured only slightly conical.

The bore 21 in the foot 5b is not, as it is in the FIGS. 1 and 4 is shown, conically shaped, but cylindrical with chamfered edge. This allows unlike FIG. 4 the use of standardized, cylindrical fastening bolts 12b.

Claims (16)

1. Holder for attachments, in particular warning lights, on fall-protection safety devices (2) on construction sites, the holder (1) being mountable onto a barrier plate (3, 3a) and comprising a base (5, 5a, 5b) having side walls (8, 9), it being possible to couple the side walls (8, 9) to the barrier plate (3, 3a) by means of at least one fastening bolt (12, 12a, 12b) and/or using an adhesive, characterised in that the surface perpendiculars (N) of contact faces (10), which face one another, of the side walls (8, 9) are at an angle (W) to one another in a range of from 90° to 160°, it being possible for the fastening bolt (12, 12a, 12b) to extend between the side walls (8, 9) and to penetrate the barrier plate (3, 3a), holes being arranged in the side walls (8, 9) for the fastening bolt (12, 12a, 12b).
2. Holder according to claim 1, characterised in that the angle (W) is in a range of from 130° to 150°.
3. Holder according to either claim 1 or claim 2, characterised in that the contact faces (10) can be detachably or non-detachably bonded to the support surfaces (11) by incorporating a liquid or a viscoplastic adhesive or by incorporating an adhesive arranged on a carrier film.
4. Holder according to any of claims 1 to 3, characterised in that the side walls (8, 9) are interconnected via a transverse web (13) which, when installed, extends at a spacing from and parallel to an upper web (14) of the barrier plate (3, 3a).
5. Holder according to any of claims 1 to 4, characterised in that the holes for the fastening bolt (12) are positioned in the side walls (8, 9) such that the fastening bolt (12) is supported from the inside against the upper web (14) of the barrier plate (3).
6. Holder according to any of claims 1 to 5, characterised in that the holder (1) consists of a plastics material having a greater hardness than the barrier plate (3, 3a), on which said holder can be mounted by means of at least one fastening bolt (12, 12a, 12b) and/or using an adhesive.
7. Holder according to any of claims 1 to 6, characterised in that the holder (1) comprises a securing element (15a, 15b) designed to interlock with the fastening bolt (12a, 12b).
8. Holder according to claim 7, characterised in that the securing element (15a, 15b) is a threaded portion formed on the holder (1) or a nut fastened to the holder (1).
9. Holder according to claim 7, characterised in that the securing element (15) comprises at least one latching projection of a bayonet catch, the fastening bolt (12) comprising a latching nose corresponding to the latching projection.
10. Holder according to any of claims 1 to 9, comprising fastening bolts (12, 12a, 12b), characterised in that the fastening bolt (12, 12a, 12b), by means of which the holder (1) can be mounted on the barrier plate (3, 3a), consists of plastics material.
11. Holder according to any of claims 1 to 10, comprising fastening bolts (12, 12a, 12b), characterised in that the fastening bolt (12, 12a, 12b), by means of which the holder (1) can be mounted on the barrier plate (3, 3a), does not project beyond the outer contour of the holder (1) when installed.
12. Holder according to any of claims 1 to 10, comprising fastening bolts (12, 12a, 12b), characterised in that the fastening bolt (12, 12a, 12b), by means of which the holder (1) can be mounted on the barrier plate (3, 3a), is captively assigned to the holder (1).
13. Fall-protection safety device for protecting construction sites, comprising a plastics barrier plate (3, 3a) which comprises a strut (4, 4a, 4b), the lateral support surfaces (11) of which are inclined, surface perpendiculars (N) of the support surfaces (11) being at an angle (W) of from 90° to 160°, in particular at an angle (W) of from 130° to 150°, so that the strut (4, 4a, 4b) tapers upwards in the shape of a trapezium, said safety device comprising a holder (1) according to any of claims 1 to 12.
14. Fall-protection safety device according to claim 13, characterised in that the width (B) thereof measured transverse to the barrier plate (3, 3a) is not greater than the width (B1) of the barrier plate (3, 3a).
15. Fall-protection safety device according to either claim 13 or claim 14, characterised in that the inclined contact faces (10), which face one another, of the side walls (8, 9) rest on support surfaces (11) of the barrier plate (3, 3a), which support surfaces are at the same angle (W) to one another as the contact faces (10).
16. Fall-protection safety device according to any of claims 13 to 15, characterised in that the barrier plate (3, 3a) comprises a duct (18, 18a) which extends transverse to the barrier plate (3, 3a), comprises a wall (19) and is intended for receiving a fastening bolt (12a, 12b).

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