Fall prevention element

Abstract

The invention relates to a fall prevention element (1) for a flat roof, said fall prevention element comprising: a base (3) that can be detachably secured to a parapet wall (2); and a post (4), extending upward from the base (3), for a railing. In order to achieve particularly good ease of handling, according to the invention the base (3) has one or more rollers (5) on a bottom side in order to make it possible to move the fall prevention element (1) along the parapet wall (2).

Description

[0001] Fall protection element

[0002] The invention relates to a fall protection element for a flat roof, comprising a base that can be releasably fastened to a parapet and a post for a railing that projects from the base.

[0003] Various fall protection devices for flat roofs have become known from the state of the art, particularly to minimize the risk of falls when working on flat roofs. For example, document FR 2 941 480 A1 describes a fall protection device that can be clamped to a parapet.

[0004] However, it has been shown that the handling of state-of-the-art fall protection systems is very cumbersome and, in addition, there is a risk that damage to the parapet may occur when the fall protection system is used.

[0005] This is where the invention comes in. The object of the invention is to provide a fall protection element of the type mentioned above that is particularly easy to handle while simultaneously posing a low risk of damage during handling.

[0006] This object is achieved according to the invention by a fall protection element of the type mentioned at the outset, in which the base has one or more rollers on an underside in order to be able to move the fall protection element along the parapet.

[0007] Within the scope of the invention, it was recognized that handling of prior art fall protection elements is disadvantageous because the fall protection element must be lifted or sanded along the parapet during repositioning, which makes handling complex and, moreover, carries a risk of damage to the parapet when sanding along the parapet. Repositioning a fall protection system on the roof is generally particularly necessary when work is to be carried out in an area of ​​the roof close to the parapet, for example, the bonding of foils in an area close to the edge. Accordingly, repositioning of the fall protection system is usually necessary multiple times, so that the aforementioned disadvantages very frequently arise with prior art fall protection systems.

[0008] By using floor-side rollers on the base, the risk of damaging the parapet due to a grinding movement is eliminated even when repositioning the fall protection system, especially since the fall protection element can be easily moved along the parapet using the rollers. This means that work on a roof area under the parapet is easily possible at any time, even on the parapet, by moving the fall protection element using the rollers or positioning it in a location where no work needs to be carried out at the time.

[0009] It is advantageous if a clamping device with one or more jaws is connected to the base, which can be moved transversely to a longitudinal direction of the parapet when the fall protection element is arranged on the parapet, so that the fall protection element can be clamped to the parapet using the jaw(s). This enables simple and damage-free attachment of the fall protection element to the parapet.

[0010] The clamping device can, for example, have two jaws movable relative to each other, with one jaw rigidly connected to the base, optionally formed integrally with the base, and the second jaw movably connected to the base. The jaws can be connected via brackets or the like to an upper part of the base, which supports the rollers, so that the jaws are arranged beneath the rollers and rest laterally against the parapet when the rollers rest on the parapet.

[0011] The post on the parapet can itself support a complete railing to prevent people and objects from accidentally falling. It is of course also possible to arrange two or more fall protection elements along a parapet and connect the posts of the individual fall protection elements, which usually rise vertically, by longitudinal elements to form a particularly stable railing. In this case, to reposition the fall protection, both fall protection elements are usually moved along the parapet. It is advantageous if the jaws are positioned to the side of the roller(s). This results in a stable attachment of the fall protection element to the parapet. The jaws are usually movable relative to one another in a direction normal to a longitudinal direction of the parapet, so that the parapet can be clamped laterally by the jaws.Both jaws can be movable relative to the base. For simple and stable manufacturing, one jaw can also be rigidly connected to the base or manufactured as a single piece, while the second jaw can be movable relative to the first jaw and relative to the base, particularly within a guide.

[0012] The jaws can be made of a variety of suitable materials, such as plastic, metal, or the like. It is particularly advantageous if the jaws are made of wood.

[0013] Preferably, the clamping device comprises a screw connection with which the parapet can be clamped between two jaws when the fall protection element is arranged on a parapet. This enables a high clamping force to ensure stable positioning of the fall protection element on the parapet with, at the same time, little effort. As a rule, the jaws are arranged in such a way that, similar to the jaws of a shoe brake, they can be moved translationally along the same jaw axis or directly towards and away from each other in order to clamp the parapet between the jaws. This easily prevents the introduction of a tipping moment when the parapet is clamped between the jaws.

[0014] In order to enable particularly simple and at the same time robust production, it is preferably provided that a threaded rod, in particular with a high-speed thread, extends through the base, in particular in a shaped tube, on which threaded rod nuts are arranged on both sides in order to fix the base to the parapet by means of the jaws when the fall protection element is arranged on a parapet, in that the jaws are moved relative to one another by means of the nuts. In particular, tensile forces exerted by the individual jaws on the threaded rod balance each other out, so that undesired tilting of the base due to the fixation of the base by means of the jaws is easily avoided. Due to the preferably provided high-speed thread, particularly rapid loosening and fixing of the jaws is possible.

[0015] It is particularly advantageous if the jaws are positioned on a parapet under the rollers and under the threaded rod in the working position of the fall protection element. This creates a stable balance of forces.

[0016] Preferably, a guide is provided that determines the mobility of one, several, or all jaws in a direction transverse, in particular approximately perpendicular, to a longitudinal direction of the parapet when the fall protection element is arranged on the parapet. This ensures stable operation of the fall protection element and robust movement of the jaws, even under harsh operating conditions such as those typically encountered on a construction site.For example, the first jaw can be rigidly connected to the base, in particular via a bracket fixedly connected to the base and the first jaw, and the second jaw can be connected to a second bracket which corresponds to the base, so that a guide is obtained by means of which the second jaw can be moved relative to the base and relative to the first jaw in a direction normal to a longitudinal direction of the parapet and approximately normal to a longitudinal axis of the upright in order to clamp the parapet between the jaws.

[0017] The jaws are preferably arranged on brackets that extend beneath the threaded rod. This ensures a simple structure, especially since the brackets can be formed simply by shaped tubes, for example. The brackets can be L- or U-shaped, for example, to allow the jaws to be guided parallel to the threaded rod and to provide a vertical distance between the jaws and the threaded rod. Typically, at least one bracket is movable relative to the base.

[0018] In particular, to ensure stable attachment of the fall protection element to a parapet with a sloped parapet cover, it is preferably provided that the brackets have different jaw distances from the parapet. This allows clamping between jaws that are approximately at the same vertical position, even with a sloped threaded rod. Preferably, at least one bracket is detachably connected to the base, allowing the fall protection element to be easily adapted to parapets with different inclinations.

[0019] It is advantageous if the post has two recesses for accommodating longitudinal elements, especially boards. This allows two fall protection elements to be easily combined to form a stable railing.

[0020] The recesses can also be formed by clamps with which longitudinal elements such as pipes can be arranged on the uprights.

[0021] Preferably, the upright is arranged centrally on the base. Furthermore, it is preferably provided that a upright axis intersects a jaw axis, along which the jaws are movable, usually perpendicular to the upright axis and perpendicular to a longitudinal axis of the parapet. This achieves particularly favorable mechanical conditions on the components of the base, usually shaped tubes.

[0022] In a fall protection system, it is preferably provided that at least two fall protection elements are provided, which are designed according to the invention and connected by longitudinal elements that form a railing. The longitudinal elements can be formed, for example, by wooden boards, although other longitudinal elements such as metal tubes could also be used.

[0023] By combining more than two fall protection elements and connecting them via longitudinal elements, fall protection systems of any length can be produced.

[0024] Further features, advantages, and effects of the invention will become apparent from the following exemplary embodiment. Reference is made to the drawings, which show:

[0025] Fig. 1 and 2 show a first embodiment of a fall protection element according to the invention in a sectional view;

[0026] Figs. 3 and 4 show elements of another fall protection element according to the invention. Figs. 1 and 2 show a section through a first embodiment of a fall protection element 1 according to the invention. Fig. 1 shows the fall protection element 1 arranged on a parapet 2, while Fig. 2 shows an exploded view.

[0027] As shown, the fall protection element 1 has a base 3, which here is formed by a hollow shaped tube, in which a threaded rod 10 is arranged. The base 3 supports a post 4, to which longitudinal elements 13, here tubes, are connected to form a railing.

[0028] Below the upright 4, on both sides of the parapet 2, brackets 16 are arranged, which carry jaws 6 for clamping the fall protection element 1 to a parapet 2. One bracket 16, shown on the left in Fig. 1, is rigidly connected to the base 3, while the second bracket 16 is movable relative to the base 3 and thus relative to the first bracket 16, specifically along a jaw axis 7, which is approximately normal to a post axis 8 of the upright 4. Nuts 11 are arranged on the threaded rod 10 on the outside adjacent to the brackets 16, so that the jaws 6 can be fixed to the parapet 2 by a screw connection, which is formed here by the threaded rod 10 in conjunction with the nuts 11, or can be moved relative to one another by rotating the nuts 11 along the threaded rod 10, in that the jaw 6 shown on the right in Fig. 1 together with the bracket 16 which is detachably and movably connected to the base 3 relative to the base 3 and thus relative to the left in Fig.1 shown jaw 6 is moved.

[0029] With the nuts 11, the jaws 6, which are guided via brackets 16 with the threaded rod 10 and positioned below the threaded rod 10, can be moved and fixed parallel to the threaded rod 10 in order to clamp the fall protection element 1 to a parapet 2. For this purpose, the bracket 16, which is movably connected to the base 3 and shown on the right in Fig. 1, has a shaped tube that corresponds to a shaped tube of the base 3, so that the shaped tubes form a guide for the jaw 6. Of course, other types of guides are also possible.

[0030] As can also be seen, the base 3 has rollers 5 on its underside, so that the fall protection element 1 can be moved by means of the rollers 5 along a longitudinal direction 19 of the parapet 2, which here runs perpendicular to the image plane. This enables simple handling without any risk of damage to the parapet 2, so that the fall protection can be easily moved on the parapet 2, here on a parapet cover 9 formed, for example, by a sheet metal, in particular in order to be able to carry out work on an area close to the edge of a roof 14. This can be necessary in particular when work must be carried out in an area adjacent to the parapet 2.

[0031] The parapet cover 9 is not exactly horizontal here, as shown in Fig. 1, but is slightly slanted. In order to still allow the jaws 6 to engage the parapet 2 at approximately the same vertical position, the brackets 16 of the two jaws 6 are designed with jaw spacings 15 of different lengths, so that the jaw 6 shown on the right in Fig. 1 has a greater vertical distance from the threaded rod 10 than the jaw 6 shown on the left in Fig. 1, as a result of which the jaws 6 themselves rest on the slanted parapet cover 9 at approximately the same height on the side of the parapet 2. This easily prevents the introduction of a tilting moment when tightening the screw connections with which the jaws 6 are pressed against the parapet 2.

[0032] As a rule, at least one bracket 16 is detachably connected to the base 3, whereby it can be replaced by a bracket 16 with a different jaw spacing 15, so that the fall protection element 1 can be easily adapted to differently inclined parapets.

[0033] As can also be seen, the fall protection element 1 has a post 4 which projects from the base 3 and is connected to the base 3, which post 4 is aligned approximately vertically and has two recesses 18 through which longitudinal elements 13 can be attached to the post 4, so that, for example, a railing for fall protection can be easily formed by two or more fall protection elements 1 arranged next to one another, in that longitudinal elements 13 are attached to the individual fall protection elements 1 or to the posts 4 of the fall protection elements 1.

[0034] The fall protection element 1 shown here has clamps 12 which form the recesses 18 so that the longitudinal elements 13 formed, for example, by tubes can be easily fixed to the upright 4 or connected to uprights 4 of several

[0035] Fall protection elements 1 can be connected.

[0036] Here, the upright 4 is formed by a shaped tube, which is positively connected to a shaped tube of the base 3. Of course, it is also possible for the upright 4 to be alternatively or additionally non-positively connected to the base 3 or to be formed in one piece with the base 3 or to be part of the base 3.

[0037] Fig. 2 shows the fall protection element 1 of Fig. 1 in a disassembled state or in an exploded view, with dimensions also shown in millimeters for example. It is understood that other dimensions are also possible. As can be seen, a particularly simple structure results due to the design of the base 3, brackets 16 and uprights 4 from shaped tubes, for example square tubes. The screw connection with which the jaws 6 can be fixed laterally to the parapet 2 can be formed by a threaded rod 10, which is common in formwork, in conjunction with corresponding nuts 11 or anchor nuts, thus enabling robust production at low cost.

[0038] As can be seen here, the bracket 16 shown on the right is formed by a J-shaped shaped tube which has smaller external dimensions than the internal dimensions of the corresponding shaped tube of the base 3, so that the bracket 16 shown on the right can be inserted into the shaped tube of the base 3 and together with it forms a guide for the jaw 6 shown on the right in Fig. 2. The jaw 6 shown on the left in Fig. 2 is connected to the base 3 via a bracket 16 which is formed in one piece with the base 3, so that the base 3 and the bracket 16 together form an approximately L-shaped component. As can be seen again here, a distance between the jaws 6 and the rollers 5 normal to the threaded rod 10, i.e. a jaw spacing 15, is smaller in the jaw 6 shown on the left than in the jaw 6 shown on the right, so that this design is particularly suitable for attachment to an attic 2 with a sloping attic cover 9.

[0039] Figs. 3 and 4 show details of a further embodiment of a fall protection element 1 according to the invention. This embodiment also comprises a base 3, on which jaws 6 are arranged via brackets 16 and are movable parallel to a jaw axis 7. A post 4 and rollers 5 are also arranged on the base 3, so that the base 3 can be moved along a longitudinal direction 19 of a parapet 2 on the parapet 2 by means of the rollers 5. The longitudinal direction 19 is perpendicular to the post axis 8 and perpendicular to the jaw axis 7.

[0040] Here, the jaws 6 are made of wood and are also movable parallel to a threaded rod 10 that can be guided through a bore 17 in the base 3. As can be seen, the base 3 here has a bore 17 in which the threaded rod 10 can be accommodated.

[0041] A jaw 6 is in turn guided through a shaped tube in the base 3 so that it can be moved parallel to a longitudinal direction 19 of the threaded rod 10 and transversely to an attic 2 when the fall protection element 1 is arranged on an attic 2.

[0042] In contrast to the fall protection element 1 shown in Fig. 1 and 2, the post 4 here does not have clamps 12 for fastening longitudinal elements 13, but merely recesses 18 in which, for example, boards can be arranged to form a railing, in particular by connecting posts 4 of several fall protection elements 1.

[0043] As can be seen, the upright 4 is formed by a shaped tube corresponding to a shaped tube of the base 3, so that the upright 4 can be plugged onto the shaped tube projecting vertically along the upright axis 8 on the base 3.

[0044] With a fall protection element 1 according to the invention, a particularly cost-effective and at the same time robust as well as simple and damage-free handleable fall protection for work on a flat roof can be produced in a particularly simple manner.

Claims

Patent claims 1. Fall protection element (1) for a flat roof, comprising a base (3) which can be detachably fastened to a parapet (2) and a post (4) for a railing which projects from the base (3), characterized in that the base (3) has one or more rollers (5) on an underside in order to be able to move the fall protection element (1) along the parapet (2).

2. Fall protection element (1) according to claim 1, characterized in that a clamping device with one or more jaws (6) is connected to the base (3), which are movable transversely to a longitudinal direction of the parapet (2) when the fall protection element (1) is arranged on the parapet (2) in order to be able to clamp the fall protection element (1) to the parapet (2) by means of the jaw(s) (6).

3. Fall protection element (1) according to claim 2, characterized in that the jaws (6) are positioned laterally of the roller(s) (5).

4. Fall protection element (1) according to claim 2 or 3, characterized in that the jaws (6) are made of wood.

5. Fall protection element (1) according to one of claims 2 to 4, characterized in that the clamping device has a screw connection with which the parapet (2) can be clamped between two jaws (6) when the fall protection element (1) is arranged on a parapet (2).

6. Fall protection element (1) according to one of claims 1 to 5, characterized in that a threaded rod (10), which in particular has a high-speed thread, extends through the base (3), in particular in a shaped tube, on which threaded rod (10) nuts (11) are arranged on both sides in order to fix the base (3) to the parapet (2) by means of the jaws (6) when the fall protection element (1) is arranged on a parapet (2) by moving the jaws (6) relative to one another by means of the nuts (11).

7. Fall protection element (1) according to one of claims 1 to 6, characterized in that the jaws (6) are arranged in a working position of the fall protection element (1) on an attic (2) under the rollers (5) and under the threaded rod (10).

8. Fall protection element (1) according to one of claims 1 to 7, characterized in that the jaws (6) are arranged on brackets (16) which extend below the threaded rod (10).

9. Fall protection element (1) according to one of claims 1 to 8, characterized in that the brackets (16) have different jaw distances (15) to the parapet (2).

10. Fall protection element (1) according to one of claims 1 to 9, characterized in that a guide is provided which determines a mobility of one or all jaws (6) in a direction transverse, in particular approximately normal, to a longitudinal direction of the parapet (2) when the fall protection element (1) is arranged on the parapet (2).

11. Fall protection element (1) according to one of claims 1 to 10, characterized in that the upright (4) has two recesses (18) for receiving longitudinal elements (13), in particular boards.

12. Fall protection device, comprising at least two fall protection elements (1) according to one of claims 1 to 11, which are connected by longitudinal elements (13) forming a railing.

Images