Climbing protection device and machine or structure with climbing protection device

Abstract

The invention relates to an anti-climbing device (3) for mounting on machines or structures, in particular for mounting on a sign gantry or a cantilever beam. To prevent access to the machine or structure by climbing, the anti-climbing device comprises a base body (9) and at least one resilient interfering element (12) attached to the base body (9).

Description

The invention relates to a climbing protection device according to the preamble of claim 1 and to a machine or a structure with a climbing protection device.It is known by use to provide climbing aids on buildings, such as climbing ladders. On such a climbing ladder, a climbing protection in the form of a metal sheet can be provided via the shoots or in the form of a pivotable grid in order to prevent unauthorized entry into the structure via the climbing aid. The climbing protection can be secured, for example, via a lock, so that authorized persons can deactivate the climbing protection by pivoting the sheet metal or the grid. However, it has been found that other elements of the climbing aid, such as a back guard or back guard basket, which is intended to prevent the ladder from falling off and up the structure, are often used in order to bypass the climbing guard in a climbing manner. Since access to the structure is often associated with damage to the structure by spraying with paint or with intervention in road traffic, considerable economic damage occurs in this case and there is also the risk of damage to persons.It is an object of the invention to provide a climbing protection device for mounting on machines or structures, in particular for mounting on a sign bridge or a cantilever beam, which reliably prevents access to the machine or structure by climbing.This object is achieved by a climbing protection device which is characterized by a base body and at least one resilient interference element fastened to the base body. Unlike in the case of rigid components, it is very difficult to hold them firmly on a resilient interfering element during climbing, so that climbing on the climbing protection devices can be prevented or at least is made significantly more difficult. Suitable resilient interference elements are in particular interference elements of this type which are elastically movable at their free end projecting from the base body in such a way that, in the mounting position of the climbing protection device, the free end is elastically deformed, loaded by a weight force of 2 kg in the direction of the gravity vector, by at least 5 cm, in particular by at least 10 cm and particularly advantageously by at least 20 cm, in particular at a length of the resilient interference element of 50 cm. Alternatively, it can be provided that the free end, under a load of 30 kg in the direction of the gravity vector, deforms elastically by at least 5 cm, preferably by at least 15 cm and particularly preferably by at least 50 cm, in particular with a length of the resilient interference element of 50 cm. This results in a considerable uncertainty of the gripping possibilities during climbing and the possibility of springing back additionally represents a risk for the climbing person which is difficult to calculate.The at least one interference element can preferably have a curved shape; in particular, the at least one interference element can be designed as a helical spring and / or helical spring. A helical spring is distinguished by a particularly high elastic deformability, which additionally makes climbing more difficult.Particularly advantageously, a plurality of such interference elements can be fastened to the base body in order to provide interference elements in the entire region of the possible climbing routes.The base body can be formed by a bent metal sheet which is designed in particular for bearing against an outer side of a back guard of a climbing ladder. For this purpose, the bent metal sheet can be formed in sections in a round manner, in particular in a partially circular manner in longitudinal section.In order to be able to fix the base body reliably to different structures, a plurality of holes, in particular elongated holes, can be provided in the base body, through which the base body can be screwed, for example, to a structure, in particular a back guard of a climbing ladder. Particularly through the use of elongated holes, a prefabricated base body can be fastened easily to an existing structure, such as, for example, to a back guard of a climbing ladder.Advantageously, the interference element can be fastened to the base body via a fastening element, wherein the fastening element preferably comprises a holding element and a clamping element, between which the interference element is clamped. The clamping element and / or the holding element can have a depression, in particular a groove, in which the interference element is arranged in sections and is preferably held in a form-fitting manner. The holding element can be connected to the base body and / or the clamping element to the holding element by means of rivets, whereby a secure connection which can only be released with great difficulty using conventional means results, which makes manipulation / vandalism more difficult.Furthermore, a machine or a structure, in particular a sign bridge or a cantilever beam, is claimed, which machine or structure comprises the above-described climbing protection device. Advantageously, the climbing protection device can be fastened to a climbing ladder of the machine or of the structure, in particular to a backrest protection of the climbing ladder, adjacent to a lower end or else in any other section.Further features and advantages of the invention will become apparent from the following description of a preferred embodiment with reference to the drawings. The following are shown: FIG. 1 shows a perspective illustration of a climbing ladder with a back guard and a climbing protection device; FIG. 2 shows a detailed view of the ascent ladder of FIG. 1 ; FIG. 3 shows a perspective illustration of the climbing protection device from FIG. 1 ; FIG. 4 shows a perspective illustration of a base body of the climbing protection device from FIG. 1 ; FIGS. 5 a, b, c show a disturbing element together with a fastening element of the climbing protection device of FIG. 1 in a front view, side view and top view, and FIG. 6 shows a perspective illustration of a clamping element of the fastening element from FIGS. 5 a, 5 band 5 c.FIG. 1 shows a perspective illustration of a climbing ladder 1 with a back guard 2 and a climbing guard device 3. The ascent ladder 1 is exemplarily fastened to a vertical support 4, which may be the post of a bridge, in particular a sign bridge, or a cantilever or also a mast. The beam 4 may be formed of steel, concrete or any other material and is fixed at the lower end in a foundation 5. In an embodiment which is not shown, however, the climbing ladder with the back guard and the climbing protection device 3 can also be fastened to a machine, for example a crane. The support can also be formed by a building or structure.The rear guard 2, which is known from the prior art and is also referred to as a rear guard basket, is fastened to the ascent ladder 1, which is preferably made of metal. Such a back guard 2 surrounds an area in front of the ascent ladder 1 and forms a type of tunnel, so that dropping from the ladder during ascent and descent is prevented. At the lower end, the tunnel formed by the back guard 2 is closed by an ascent guard 6 in the form of a lattice which can be pivoted laterally about a vertical axis and locked via a lock. In the position shown, the climbing protection 6 can be secured via the lock, not shown here, and thus a climbing along the climbing ladder 1 can be reliably prevented.In order to prevent climbing on the outside of the back guard 2 or at least make it significantly more difficult, the climbing protection device 3 is arranged and fastened on an outer side of the back guard 2, in particular adjacent to the lower end of the back guard 2.FIG. 2 shows a detailed view of the ascent ladder 1 from FIG. 1. As can be seen there, among other things, the back guard 2 comprises a plurality of vertical, at least partially open profiles, preferably made of steel, of which the profile 7 is numbered here by way of example. The profiles 7 are connected to one another via a plurality of back-protecting brackets and to the climbing ladder 1, of which the back-protecting bracket 8 is numbered here. Screws can be used to connect the back protection bow 8 to the profiles 7, in particular hammer head screws, which engage into the half-open profile 7 and engage behind it in a form-fitting manner.Like the back protection bow 8, a base body 9 of the climbing protection device 3, which is preferably formed by a bent sheet metal, can be fastened to the profiles 7 by means of corresponding fastening screws, in particular in the form of hammer head screws. For example, the fastening screw 10 is numbered here. The sheet metal of the base body 9 can be bent in such a way that it preferably bears laterally on the outside against a plurality of or all profiles 7 and additionally, if appropriate, also against the climbing ladder 1, in order reliably to secure the region around the climbing ladder 1.A fast assembly of the prefabricated base body 9 can be achieved by providing a plurality of holes, in particular elongated holes, in the base body 9, through which the base body 9 can be screwed to the profiles 7 or the ascent ladder 1. The elongated holes, of which the elongated hole 11 is numbered here by way of example, preferably extend in the longitudinal direction of the sheet-like base body 9 and allow a secure screw connection to the profiles 7, even with greater tolerances in the position of the profiles 7.On an outer side of the base body 9 a plurality of resilient interference elements are provided, of which the interference element 12 is numbered here by way of example. The interference elements 12 have a curved shape and are designed as a helical spring. The material of the disturbing elements 12 is preferably a stainless steel which has preferably been bent as a round wire with a diameter of at least 2 mm, preferably at least 4 mm, into a helical shape or another shape.FIG. 3 shows a perspective illustration of the climbing protection device 3 from FIG. 1. Unlike the illustration here, corresponding holes, in particular slots, can also be arranged at the free ends of the base body 9 designed as an elongate metal sheet, that is to say in the region adjoining the ascent ladder 1, in order to enable fastening of the base body 9 to the ascent ladder 1 or to a region adjoining the latter, in particular of the support 4.As can be further seen from FIG. 3, each of the interference elements 12 is fastened to the base body 9 via a fastening element 13. As will be described in detail below, the fastening can preferably be effected via a rivet connection, which enables a particularly stable fastening of the interference elements 12 to the base body 9 that is releasable only by destruction. Instead of a rivet connection, however, screw connections can also be used.FIG. 4 shows a perspective illustration of the base body 9 of the climbing protection devices 3 from FIG. 1. As can be seen there, in addition to the elongated holes 11, further through-holes can be provided in the base body 9, of which the through-hole 14 is numbered here. The fastening elements 13 can be riveted to the base body 9 in a particularly simple manner through the through-bores 14. The elongated holes 11 and the through-holes 14 can be produced particularly easily in the sheet metal of the base body 9 before bending by punching.In addition, FIG. 4 shows the bent shape of the sheet metal of the base body 9. The base body 9 can preferably be formed from a metal sheet, in particular an aluminum sheet, and can have a thickness of at least 2 mm, preferably at least 3 mm. The bending of the sheet metal is adapted to the contour of the back guard 2 and can be circular in sections, in particular in longitudinal section along the slots 11 in sections. As already described with reference to FIG. 3, the base body 9 can additionally have further through-bores, not shown here, in the region adjoining the ascent conductor 1 or the carrier 4, that is to say at the free ends of the elongate bent metal sheet, in order to also fasten the base body 9 to the ascent conductor 1 or the carrier 4.In FIGS. 5 a, 5 band 5 c, the interference element 12 is shown in a front view, a side view and a plan view. As can be seen from the front view in FIG. 5 a, the fastening element 13 comprises a holding element 15 in the form of an angularly bent metal sheet, preferably made of metal, in particular aluminum, with a thickness of at least 3 mm, preferably at least 8 mm. Furthermore, the fastening element 13 comprises a clamping element 16, which is firmly connected to the holding element 15 by means of rivets. Between the holding member 15 and the clamping member 16, a portion adjacent to a free end of the interfering member 12 is clamped, whereby the interfering member 12 is securely held on the fastening member 13. The climbing protection device 3 can comprise differently designed holding elements 15, in particular the holding elements 15 can be bent at different angles, so that the interfering elements 12 also protrude from the base body 9 at different angles.As can be seen from the side view in FIG. 5 band the top view in FIG. 5 c, the free end of the interference element 12, which is clamped in the fastening element 13, is formed bent at an angle, in particular at a right angle, so that a particularly reliable fixing of the interference element 12 is obtained.FIG. 6 shows a perspective illustration of the clamping element 16 from FIGS. 5 a, 5 band 5 c. As can be seen there, in addition to through-bores, not numbered here, for rivet connections to the holding element 15, the clamping element 16 additionally comprises a depression in the form of a groove 17, which has an angled, in particular a rectangularly curved, course. A correspondingly bent free end of the interference element 12 can thereby be held in the groove 17 in a particularly reliable form-fitting manner. By riveting the holding element 15 to the base body 9 and the clamping element 16 to the holding element 15, a particularly stable, positive connection is created, which enables a secure fastening of the interference elements 12 to the base body 9 and thus to the climbing ladder 1. Like the holding element 15, the clamping element 16 can be made of metal, in particular aluminum, with a thickness of at least 2 mm, in particular at least 8 mm.List of reference numbers:1 Climbing ladder 2 Backrest protection 3 Climbing protection device 4 Carrier 5 Foundation 6 Climbing protection 7 Profile 8 Backrest protection bow 9 Base body 10 Fastening screw 11 Elongated hole 12 Interference element 13 Fastening element 14 Through-bore 15 Holding element 16 Clamping element 17 Groove

Claims

Climbing protection device (3) for mounting on machines or buildings, in particular for mounting on a sign bridge or a cantilever beam, in order to prevent access to the machine or the building by climbing, characterized bya base body (9) and at least one resilient interference element (12) fastened to the base body (9).Climbing protection device (3) according to Claim 1, characterized in that the at least one interfering element (12) has a curved shape, in particular is designed as a helical spring.Climbing protection device (3) according to Claim 1 or 2, characterized in that a plurality of interfering elements are fastened to the base body (9).Climbing protection device (3) according to one of Claims 1 to 3, characterized in that the base body (9) is formed by a bent sheet metal which is designed in particular for bearing against an outer side of a back protection (2) of a climbing ladder (1).Climbing protection device (3) according to one of Claims 1 to 4, characterized in that the base body (9) has a plurality of holes, in particular slots (11), through which the base body (9) can be screwed to a machine or a structure, in particular a backrest (2) of a climbing ladder (1).Climbing protection device (3) according to one of Claims 1 to 5, characterized in that the interference element (12) is fastened to the base body (9) via a fastening element (13), wherein the fastening element (13) preferably comprises a retaining element (15) and a clamping element (16), between which the interference element (12) is clamped.Climbing protection device (3) according to claim 6, characterised in that the clamping element (16) and / or the holding element (15) has a depression, in particular a groove (17), in which the interference element (12) is arranged in sections.Climbing protection device (3) according to Claim 6 or 7, characterized in that the retaining element (15) is connected to the base body (9) and / or the clamping element (16) is connected to the retaining element (15) by means of rivets.Machine or structure, in particular sign bridge or cantilever beam, characterized by a climbing protection device (3) according to one of Claims 1 to 8.Machine or structure (2a; 2b; 2c) according to claim 9, characterised in that the climbing protection device (3) is fastened to a climbing ladder (1), in particular a backrest (2) of a climbing ladder (3).

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