Railing bar for a scaffold and method for erecting a scaffold

Abstract

The invention relates to a railing bar (10; 30; 40) for forward longitudinal-side fall protection on a scaffold, comprising: at least one hook element (11), which is arranged on an end of the railing bar (10; 30; 40) and is designed to be brought into engagement with a perforated disc (20) provided on a vertical pole (21); wherein the hook element (11) comprises at least one hook portion (14) which is at an angle to a longitudinal axis (16) of the railing bar (10; 30; 40); and wherein the hook element (11) comprises at least one rear-engaging portion (15) which is at an angle to the longitudinal axis (16) of the railing bar (10; 30; 40).

Description

[0001] Railing beam for a scaffold and method for erecting a scaffold

[0002] Field of the invention

[0003] The present invention relates to a railing post for a modular scaffold and to a modular scaffold with such a railing post. Furthermore, the invention relates to a method for erecting a modular scaffold and the use of such a railing post in a modular scaffold.

[0004] background

[0005] Scaffolding, such as modular scaffolding, comprises prefabricated, standardized scaffolding components designed to enable rapid assembly and dismantling, for example, when scaffolding a building facade. The scaffolding components are connected using standardized connecting elements and / or connection nodes / connection rosettes, which – with or without standardized adapter components – enable connections from different directions. The scaffolding components can thus be combined to form complex surface or room scaffolding. Since these usually comprise several scaffolding levels, fall protection in the form of railings is provided. However, when erecting a scaffold, there is no fall protection until the railing is installed. In order to provide fall protection even during scaffolding erection, scaffolding with a so-called leading railing has been proposed.With a leading railing, the railing post of the next scaffold level is erected from the level below, before the flooring is installed. When the flooring is then installed, the fall protection is already in place. This increases safety when erecting a scaffold with multiple scaffold levels. Such a scaffold with a leading railing post is disclosed, for example, in DE 102020 132 056 A1. In this context, it has become apparent that there is a further need to improve the safety of scaffolds, in particular, there is a need to provide fall protection for a scaffold during its erection.

[0006] It is therefore an object of the present invention to improve the safety of scaffolding, in particular it is an object of the present invention to improve the fall protection of a scaffold.

[0007] These and other objects, which will be mentioned upon reading the following description or which may be recognized by a person skilled in the art, are achieved by the subject matter of the independent claims. The dependent claims develop the central idea of ​​the present invention in a particularly advantageous manner.

[0008] Summary of the invention

[0009] A first aspect of the present invention relates to a railing post for the forward longitudinal fall protection of a scaffold, comprising: at least one hook element arranged at one end of the railing post and configured to engage with a perforated disc provided on a vertical post; wherein the hook element comprises at least one hook portion arranged at an angle to a longitudinal axis of the railing post, as viewed in plan view; and wherein the hook element comprises at least one rear grip portion arranged at an angle to the longitudinal axis of the railing post, in particular as viewed in side view.

[0010] Due to the angled arrangement of the hook section in relation to the longitudinal axis of the railing post, a hook element can be brought into engagement with a perforated disc of a vertical post in such a way that the railing post lies in front of or behind the vertical post in the installed position. It is also possible for the railing post to overlap with the vertical post in sections when installed. Preferably, the geometry of the hook element is adapted so that the railing post lies in front of or behind the vertical posts in such a way that a horizontal ledger can be installed parallel to the railing post. It is therefore possible to arrange further scaffolding components on the perforated disc, since the railing post does not block such an arrangement. For example, the railing post can be mounted next to or at the same height as a longitudinal ledger.Depending on the desired usable width of the scaffold bay, the guardrail can be positioned inside or outside the longitudinal ledger. The usage position of the guardrail can also be influenced by engaging the hook element with a specific opening in the perforated disc. This is because the perforated disc preferably has a plurality of holes designed to accommodate a hook element. In other words, the hook element is engaged with an opening in the perforated disc that is not required by a parallel-mounted horizontal ledger.

[0011] Preferably, the rear grip section is angled when viewed in the side view in the installed position. When viewed in a top view in the installed position, the rear grip section is preferably provided substantially parallel to the longitudinal axis of the railing post.

[0012] When engaging a hook element with a perforated disc of a vertical post, the hook section of the hook element is preferably inserted from above into an opening in the perforated disc. The hook element can thus be supported on the perforated disc. In addition, the hook element, or more precisely the hook section, comprises the rear grip section, which prevents the hook section from being guided out vertically upwards and thus prevents the hook element, and thus the railing, from being accidentally released from the installed position. In other words, the railing on a side on which such a hook element is provided can no longer be removed from the installed position by lifting it vertically upwards, since this is prevented by the rear grip section of the hook element. If such hook elements are provided on both sides of the railing, a railing can no longer be removed from the installed position.

[0013] In one embodiment of the railing post, the hook element may further comprise a connecting portion connected to a tube portion of the railing post, wherein the connecting portion of the hook element is arranged coaxially and parallel to the longitudinal axis of the railing post.

[0014] In one embodiment of the railing post, the hook section can be arranged at an angle of between approximately 25° and 90°, preferably between approximately 35° and 60°, particularly preferably between 40° and 50°, and most particularly preferably at an angle of approximately 45° to the longitudinal axis of the railing post, as seen in plan view in the installed position. The angle and length of the hook section can be used to determine the distance at which the railing post can be positioned behind or in front of the vertical posts in the installed position, wherein the angle and length of the hook section are preferably determined such that, in addition to the railing post, a horizontally running deck bar or longitudinal bar can also be arranged on the perforated discs.

[0015] In one embodiment of the railing post, the connecting section can have a length between approximately 2 cm and approximately 5 cm, preferably between approximately 2.5 cm and approximately 3.5 cm, and particularly preferably approximately 3 cm. The length of the connecting section can, in particular, determine the area available for connection to a tubular section of the railing post. For example, in order to weld or glue the connecting section, and thus the hook element, to a tubular section of the railing post.

[0016] In one embodiment of the railing post, the hook element can have a circular cross-section and can preferably be provided as a (round) bent part, wherein the cross-section of the hook element is preferably between approximately 8 and approximately 15 mm and particularly preferably between approximately 11 and approximately 13 mm. Providing it as a bent part represents a particularly simple and preferred way of providing a hook element for a railing post. In particular, the design as a round bent part is preferred, since such a part can slide more easily into a perforated disc during installation. In one embodiment, the hook element can be formed integrally. This makes it possible to provide a particularly compact and stable hook element. Alternatively, the hook element can be provided entirely or partially with a rectangular cross-section. In a further embodiment, the hook element can also be provided as a cast component.

[0017] In one embodiment of the railing post, the rear grip section can be arranged at an angle of between approximately 20° and approximately 80°, preferably between approximately 30° and approximately 50°, and most preferably at an angle of approximately 45° to the longitudinal axis of the railing post, as seen in the side view in the installed position.

[0018] In one embodiment of the railing post, the rear grip section can have a length between about 15 and about 80 mm, preferably between about 30 and about 60 mm and particularly preferably about 50 mm.

[0019] In one embodiment of the railing post, the railing post can comprise two hook elements arranged at opposite ends of the railing post and each configured to engage with a perforated disc provided on a vertical post; and wherein the two hook elements can be oriented towards the same side of the railing post. A railing post that has a hook element at each of its two ends cannot be easily removed from its installed position in a scaffold bay. This means that the railing post cannot be removed or dismantled at any time, but only during dismantling of the scaffold bay comprising the railing post. The already installed railing post with two hook elements is thus secured in its position. In this way, safety requirements can be met. In particular, manipulation of the scaffold by external influences can be prevented.In this embodiment, the two hook elements can be oriented toward the same side of the railing post and configured at corresponding angles. In one embodiment of the railing post, the railing post can comprise a hook element at one end of the railing post and a further connecting means with a connecting head at an opposite end of the railing post, which is designed to pivot about an axis arranged perpendicular to the longitudinal axis of the railing post. If the connecting head is connected to a vertical post, the railing post can be moved, in particular pivoted, relative to the connecting head or the vertical post. This is particularly advantageous if the railing post is to be used multiple times as a leading railing post.

[0020] The connection head is preferably hinged to the railing post. This means that the railing post and the connection head are connected via a joint. The joint defines the axis around which the railing post can be pivoted relative to the connection head. When the railing post is mounted, i.e. in the position of use of the railing post, the axis around which the railing post can be pivoted preferably runs horizontally. To form the joint, the connection head can have an eye flange with an eye. The longitudinal axis of the eye corresponds to the axis around which the railing post can be pivoted. A bolt can be passed through the eye and held in openings on the shell side of a pipe section at the end of the railing post.

[0021] The eye flange or the bolt are preferably provided in a bracket element that extends perpendicular to the longitudinal axis of the railing post. Such a bracket element can be used to determine the distance between the longitudinal axis of the railing post and the perforated disc. In other words, such a bracket element can be used to determine the height at which the railing post can be positioned. For example, if a longer bracket element is provided, the railing post will be higher when connected than with a shorter bracket element.

[0022] For connection to a perforated disc of a vertical post, the connection head can further comprise a connecting section with two claws that can be pushed onto the perforated disc such that one claw is positioned above and one claw is positioned below the perforated disc. To accommodate a locking device, for example, in the form of a U-shaped locking pin, the connecting section can comprise openings that can be brought into alignment with an opening in the perforated disc, allowing the locking device to be inserted into the openings.

[0023] According to a preferred embodiment of the present disclosure, the connection head is designed analogously to the connection head of DE 10 2020 132 056 A1 mentioned above. The railing post to be connected to a vertical post can thus be arranged eccentrically with respect to the vertical post via the connection head.

[0024] The proposed connection head enables similar connection options to the hook element of the guardrail. In contrast to the design with two hook elements arranged at the ends, the design with a hook element and a connection head can be removed or dismantled from a fully assembled scaffold bay at any time. To do so, only the locking device needs to be released. The guardrail is therefore not protected from external influences. In addition, the connection head is more complex than the hook element, increasing the manufacturing effort. However, if dismantling of the guardrail is required, a guardrail with a hook element and a connection head provides such an option.

[0025] This design also allows for the installation of a longitudinal ledger at the same height as the guardrail. The guardrail can then be detached from the vertical posts and used as a leading guardrail for the next scaffolding level. This approach has the advantage that the leading guardrail can be used as a fall protection device during scaffolding erection, and a more load-bearing, but also heavier, horizontally running ledger or longitudinal ledger can then be installed next to the guardrail. The guardrail can then be removed and used as a leading guardrail for the next scaffolding level.

[0026] In one embodiment of the railing post, the railing post can be formed from a metal tube, on which a first hook element is arranged at one end and a second hook element or another connecting means is arranged at the opposite end of the railing post, and wherein the metal tube preferably has a circular cross-section. The design as a metal tube has the advantage that the railing post is lightweight and thus easier to handle - especially during assembly. At the same time, the tube cross-section ensures high dimensional rigidity. This is particularly true for a circular cross-sectional shape. In addition, a circular cross-sectional shape can be more easily gripped with the hand, for example, to hold on or support oneself. There are no annoying edges that could potentially lead to injury.As an alternative to providing the railing post from a metallic material, it is also possible to provide the railing post from a plastic material.

[0027] In one embodiment of the railing post, the two hook elements, or the hook element and the additional connecting element, can each be provided in the installed position on an underside of the metal tube. This makes it possible to influence the specific installation height of the railing post. For example, if the connecting section of the hook element is provided with a larger cross-section, the installation height of the railing post increases. A tab element, for example, can also be provided on the additional connecting element, which can be made longer or shorter, in order to influence the specific installation height of the railing post.

[0028] A further aspect of the present invention relates to a scaffold, preferably a modular scaffold, with at least one railing post described above and a vertical post which comprises at least one perforated disc for connection to a hook element of the railing post, wherein the perforated disc is preferably designed as a rosette surrounding the vertical post, which has a plurality of, preferably at least four, identical openings arranged at the same angular distance from one another for receiving a hook section of a hook element of the railing post.

[0029] The railing post can have a hook element at each of its ends. Alternatively, the railing post can have a hook element at one end and a connection head on the opposite end. Both the hook element and the connection head can be connected to the perforated disc in such a way that the railing post can be pivoted relative to the vertical post during assembly. This means that the railing post can be used to create a scaffold with a leading railing. If the scaffold is erected in front of a facade, the scaffold post can be used on both the side facing the facade and the side facing away from the facade. Depending on the local conditions or the design of the facade, fall protection may be required on both sides.

[0030] The perforated disc is preferably designed as a rosette surrounding the vertical post, which has several, preferably at least four, identical openings arranged at the same angular distance from one another for receiving a hook element of the railing post. In this case, the hook element can be inserted into any of the openings in the perforated disc, thus fundamentally providing several connection options. The position of use of the railing post varies depending on the opening into which the hook element is inserted.

[0031] Preferably, the plurality of openings for receiving a hook element are arranged in a cross- or star-shaped manner in a plan view of the perforated disc. In the use position of the vertical post having the perforated disc, the cross- or star-shaped openings of the perforated disc are preferably arranged offset in their angular position relative to an axial grid of the scaffolding. The offset or eccentric arrangement of the guardrail via the hook element relative to the axial grid of the scaffolding can thus be further influenced by the perforated disc. In a further development of the embodiments described here, it is proposed that the perforated disc have further openings for receiving further scaffolding components, in particular decking bars and / or longitudinal bars that run horizontally in the use position.The additional openings are preferably also arranged at the same angular distance from each other, preferably offset by half the angular distance from the first openings, which serve to accommodate a hook element. In this way, the perforated disc offers a wide range of connection options for a variety of different scaffolding components.

[0032] According to a first preferred embodiment of the scaffold, the railing is provided with a hook element at both ends, each of which is connected to a vertical post. The railing, which is provided with a hook element at both ends, cannot be removed or dismantled at any time, but only in conjunction with the dismantling of the respective scaffolding bay. The scaffolding featuring this railing is therefore particularly well protected against external influences.

[0033] According to a further preferred embodiment of the scaffold, the guardrail is connected to the vertical posts at one end with a hook element and at the other end with a connecting element. This guardrail can be removed or dismantled as needed.

[0034] In the scaffolding described here, the longitudinal axis of the railing post can thus run parallel with respect to an axial grid of the scaffolding, i.e. the railing post is arranged in front of or behind the vertical posts. The axial grid of the scaffolding is preferably defined by the longitudinal axes of several vertical posts. With respect to these longitudinal axes, the railing post can be arranged offset by a certain amount. In one embodiment, the dimensions are determined such that, seen in plan view, a distance of between approximately 15 and approximately 25 mm, preferably between approximately 18 and approximately 20 mm, can be provided between an outer edge of a longitudinal bar that can be arranged parallel to a perforated plate and an outer edge of the railing post, more precisely of the pipe section.Furthermore, in one embodiment, the dimensions are determined such that a distance of between approximately 5 and approximately 15 mm, preferably between approximately 9 and approximately 10 mm, can be provided between an outer edge of the railing post, more precisely of the pipe section, and an outer edge of a vertical post, as seen in plan view.

[0035] Such an offset or eccentric arrangement of the guardrail allows for the installation of another scaffolding component parallel and at the same height as the guardrail. This additional scaffolding component could be a longitudinal ledger, for example. More than one additional scaffolding component can also be connected via the single perforated plate. The eccentric arrangement of the guardrail allows for a variety of connection options for additional scaffolding components to be connected to the same perforated plate.

[0036] Longitudinal ledgers form load-bearing scaffolding components in a scaffold. They therefore serve to stiffen the scaffold. If a longitudinal ledger is to be installed at the height of a guardrail, the guardrail must be offset inwards or outwards. This can be easily achieved using a guardrail as described here. The advantages of a stiffening longitudinal ledger are particularly evident in conjunction with a leading guardrail. In this case, the guardrail is located in the immediate vicinity of a contact point between two nested vertical posts, i.e. in the area of ​​a "weak point" of the scaffold. With the help of at least one longitudinal ledger, the rigidity and thus the load-bearing capacity in this area can be increased. For further stiffening, a cross ledger can also be installed as an additional load-bearing scaffolding component.Depending on the scaffold's load, it may also be possible to leave the guardrail in place. For example, if the load-bearing capacity provided by the guardrail is sufficient for the respective application.

[0037] A further aspect of the present invention relates to a method for erecting scaffolding in which a railing post as described above is connected to a first and a second vertical post, the method comprising: engaging a hook element of the hook element arranged at one end of the railing post with a perforated disc arranged on the first vertical post;

[0038] Connecting the other end of the railing post to the second vertical post;

[0039] Positioning of the railing bar using the second vertical post, which is brought into its position of use.

[0040] The proposed method can be used, in particular, to erect a scaffold with a leading railing. This means that the railing post of a scaffold level to be erected is mounted from the scaffold level below. The described method can be used for this purpose.

[0041] Since the described method uses one of the railing stiles described, it is securely held to the two vertical posts during installation. At the same time, it can be pivoted relative to the two vertical posts, regardless of whether the railing stile has a hook element at each end or is connected to a hook element and a connecting head.

[0042] In an embodiment in which the railing post comprises a hook element and a connection head, the method may further comprise:

[0043] Engaging a horizontally extending decking bar and / or a longitudinal bar on the perforated discs on which the railing post is arranged, so that the longitudinal axis of the railing post and the longitudinal axis of the horizontal decking bar are arranged parallel to each other;

[0044] Removing the railing post from the perforated discs.

[0045] Such an embodiment has the advantage that the leading railing can be used as a fall protection device during the erection of a scaffold, and a more load-bearing, but also heavier, horizontally extending bar or longitudinal bar can then be placed next to the railing, so that the railing can then be removed and used again as a leading railing for the next scaffold level. A further aspect of the present invention relates to the use of a railing described above as a leading railing in a method for erecting a scaffold and / or the use of a railing described above as a stair railing, in particular as a stair railing of a scaffold.

[0046] Description of preferred embodiments

[0047] Further features, advantages, and possible applications of the present invention will become apparent from the following description, the exemplary embodiment, and the figures. In these figures:

[0048] Figure 1 is a side view of a railing post according to a first embodiment with two hook elements;

[0049] Figure 2 is an enlarged view of an end section of the railing post from Figure 1 with a hook element;

[0050] Figure 3 is a side view of the railing post of Figure 1 in engagement with a perforated disc of a vertical post;

[0051] Figure 4 is a plan view of the railing post of Figure 1 in engagement with a perforated disc of a vertical post;

[0052] Figure 5 is a plan view of the railing post from Figure 1 in the installed state;

[0053] Figure 6 is a perspective view of a railing post according to a second embodiment with a hook element and a connection head;

[0054] Figure 7 is an enlarged view of an end section of the railing post with a connecting head; Figure 8 is a perspective view of the railing post with a

[0055] Connection head in engagement with a perforated disc of a vertical post;

[0056] Figure 9 is a side view of another embodiment of a

[0057] Railing post as stair railing;

[0058] Figure 10 is a perspective view of the railing post from Figure 9;

[0059] Figures 11 Detailed views of the axial ends of the railing beam from Figure 9 in the installed state; and

[0060] Figure 12 is a perspective view of the railing post from Figure 9 in the installed state.

[0061] Figure 1 shows a side view of a railing post 10 according to a first embodiment of the present invention. In the first embodiment, the railing post 10 comprises a hook element 11 at each of its opposite ends, which are connected to a tubular section 12 of the railing post 10. The hook elements 11 are preferably welded to the tubular section 12. The two hook sections 11 are constructed identically.

[0062] Figure 2 shows an enlarged view of an end section of the railing post 10 from Figure 1. As can be clearly seen in Figure 2, a hook element 11 comprises a connecting section 13, which is connected to the tubular section 12 of the railing post 10, and a hook section 14, which adjoins the connecting section 13. The hook element 11 shown is integrally formed and has a circular cross-section. The hook element 11 shown is provided as a round bent part and welded to the tubular section 12 at the connecting section 13. The connecting section 13 is welded to the tubular section 12 over a length of approximately 3 cm. Alternatively, the connecting section 13 can be welded to the tubular section 12 over a length of between 2 and 5 cm. The hook element 11, or more precisely the hook section 14, further comprises an undercut section 15.The undercut section 15 has a length between approximately 15 and 80 mm, preferably between approximately 30 and 50 mm and particularly preferably approximately 42 mm.

[0063] Figure 3 shows a side view of the railing post 10 from Figure 1 engaged with a perforated disc 20 of a vertical post 21 of a scaffold. When the hook element 11 is engaged with the perforated disc 20 of the vertical post 21, the hook section 14 of the hook element 11 is inserted or screwed from above into an opening in the perforated disc 20 (see also Figure 4). The hook element 11 can thus be supported on the perforated disc 20 or rest on it. As can be clearly seen in Figure 3, the undercut section 15 is angled relative to a longitudinal axis 16 of the railing post 10 in the side view. The angle (cf. reference numeral 17) enclosed by the undercut section 15 and the longitudinal axis 16 of the railing beam 10 is between 20 and 80°, preferably between 30 and 50°, particularly preferably the angle is 45°.As can also be clearly seen in Figure 3, the rear grip section 15 prevents the hook element 11 from being moved vertically upward out of the perforated disc 20. In other words, the railing post 10 can no longer be removed from the perforated disc 20 due to the "retracting" rear grip section 15. If the hook element 11 did not include such a rear grip section 15, the railing post 10 could be removed from the perforated disc 20 by vertically lifting it.

[0064] As can be seen in Figure 4, the perforated disc 20 shown is designed as a rosette 20 surrounding the vertical post 21, which rosette comprises a plurality of openings 22 for receiving the hook element 11 or the hook section 14 of the hook element 11. In the exemplary embodiment shown, four openings 22 of the same type, arranged at the same angular distance from one another, are provided for receiving a hook element 11 of the railing stile 10. In this case, the hook element 11 can be inserted into any of the openings 22 of the perforated disc 20, so that in principle several connection options exist. The openings 22 for receiving a hook element 11 are arranged in a cross or star shape in the plan view of the perforated disc 20. In the position of use of the vertical post 21 having the perforated disc 20, the cross-shaped or star-shaped openings 22 of the perforated disc 20 are preferably arranged offset in their angular position to an axis grid of the scaffold.The perforated disc 20 comprises further openings 23 for accommodating additional scaffolding components, for example, horizontally extending decking bars and / or longitudinal bars. The further openings 23 are preferably also arranged at the same angular distance from one another, preferably offset by half the angular distance from the first openings 22, which serve to accommodate a hook element 11. In this way, the perforated disc 20 offers a wide range of connection options for a multitude of different scaffolding components. The openings 22 for accommodating the guardrail 10 and the further openings 23 for accommodating additional scaffolding components are arranged such that another longitudinal bar could be inserted parallel to the guardrail 10 shown.

[0065] As can also be clearly seen in Figure 4, the hook section 14 of the hook element 11, seen in plan view, is arranged at an angle to the longitudinal axis 16 of the railing post 10. The angle (cf. reference numeral 18) at which the hook section 14 is arranged at an angle to the longitudinal axis 16 of the railing post 10 is the angle between the longitudinal axis 16 of the railing post 10 and the longitudinal axis 19 of the hook section 14, seen in plan view. The hook section 14 can be arranged at an angle (cf. reference numeral 18) between 25° and 90°, preferably between 35° and 60°, particularly preferably between 40° and 50° and most preferably at an angle of 45° to the longitudinal axis 16 of the railing post 10, seen in plan view. In the embodiment shown, the angle is approximately 46° or 46.23°.The angle and length of the hook section 14 can be used to determine the distance at which the railing post 10 can be positioned behind or in front of the vertical posts 21, wherein the angle and length of the hook section 14 are preferably determined such that, in addition to the railing post 10, a horizontally extending deck bar or a longitudinal bar can also be arranged on the perforated discs 20. In one exemplary embodiment, the dimensions of the respective ones are determined such that, viewed in plan view, a distance of between approximately 15 and 25 mm, preferably between approximately 18 and 20 mm, can be provided between an outer edge of a longitudinal bar and an outer edge of the railing post 10, more precisely of the tube section 12.Furthermore, in one embodiment, the dimensions are determined such that a distance of between approximately 5 and 15 mm, preferably between approximately 9 and 10 mm, can be provided between an outer edge of the railing post 10, more precisely of the pipe section 12, and an outer edge of the vertical post 21, as seen in plan view.

[0066] Figure 5 again shows a top view of the railing post 10 from Figure 1 in its installed state. As can be clearly seen in Figure 5, the railing post 10 with its two hook elements 11 cannot be easily removed from a scaffold bay. This means that the railing post 10 cannot be removed or dismantled at any time, but only when the scaffold bay encompassing the railing post 10 is dismantled. The already installed railing post 10 with its two hook elements 11 is thus secured in its position. This allows safety requirements to be met. In particular, manipulation of the scaffold by external influences can be prevented.

[0067] Figure 6 shows a perspective view of a railing post 30 according to a second embodiment. A first end of the railing post 30 is provided with a hook element 11 described above, which in turn can be engaged with a perforated disc of a vertical post. Instead of a hook element 11, a second end of the railing post 30 has a connecting means 31, again configured for connection to a perforated disc 20. The connecting means 31 is formed on a connection head 32, which is connected to the railing post 30 via a joint 33. In the embodiment shown, the joint 33 is formed by means of an eye flange and a bolt arranged therein.

[0068] The joint 33 is provided in a tab element 34 that extends perpendicular to the longitudinal axis of the railing post 30. Such a tab element 34 can be used to determine the distance between the longitudinal axis of the railing post 30 and the perforated disc 20. In other words, such a tab element 34 can be used to determine the height at which the railing post 30 can be positioned. For example, if a longer tab element 34 is provided, the railing post 30 will be higher in the installed state than with a shorter tab element.

[0069] For connection to a perforated disc 20 of a vertical post 21, the connection head 32 can further comprise a connection section with two claws 35 that can be pushed onto the perforated disc 20 such that one claw 35 is located above and one claw 35 is located below the perforated disc 20. Such an embodiment is illustrated in Figures 7 and 8. To accommodate a locking means, for example in the form of a U-shaped locking pin 36, the connection section can comprise openings that can be brought into alignment with an opening in the perforated disc 20, so that the locking means can be inserted into the openings.

[0070] The connection head 32 shown enables similar connection options as the hook element 11 of the guardrail 30. In contrast to the embodiment with two hook elements 11 arranged at the ends, the embodiment with a hook element 11 and a connection head 32 can be removed or dismantled from a fully assembled scaffolding bay at any time. To do so, only the locking device needs to be released. If dismantling of the guardrail is required, a guardrail 30 with a hook element 11 and a connection head 32 provides such a possibility. In this embodiment, it is also possible to mount a longitudinal ledger at the same height next to the guardrail 30. The guardrail 30 can then be detached from the vertical posts 21 and used as the leading guardrail 30 for the next scaffolding level.Such an embodiment has the advantage that the leading railing post 30 can be used as a fall protection device during scaffolding erection, and a more load-bearing, but also heavier, horizontally extending bar or longitudinal bar can then be placed next to the railing post 30, so that the railing post 30 can then be removed and used again as a leading railing post 30 for the next scaffolding level. Figures 9 and 10 show another possible embodiment of the railing post 40 as a stair railing of a scaffold. The railing post 40 has the hook element 11 at one axial end and the connecting means 31 at the other axial end.

[0071] In contrast to the previous embodiments, the railing post 40 has a central section 41. The central section 41 is arranged between a first end section 42a and a second end section 42b and is connected to them. The central section 41 and the two end sections 42a, 42b are preferably formed integrally. More precisely, the railing post 40 is formed monolithically. The first and second end sections 42a, 42b are preferably bent sections in the region of the axial ends of the railing post 40. For example, the first and second end sections are produced by bending the railing post 40. Other connections are conceivable.

[0072] The first end portion 42a and the second end portion 42b are arranged on the central portion 41 such that the railing bar 40 is substantially point-symmetrical.

[0073] The first end section 42a and the second end section 42b extend parallel to each other. In other words, the longitudinal axes of the first end section 42a and the second end section 42b are parallel to each other. The central section 41 is inclined relative to the two end sections 42a, 42b (or to their longitudinal axes).

[0074] The rear grip section 15 of the hook element 11 is arranged, particularly in the side view, at an angle to the longitudinal axis 16 of the railing bar 40, wherein the longitudinal axis 16 is preferably understood here to be the longitudinal axis of the end sections 42a, 42b.

[0075] Figures 11a and 11b show the axial ends of the end sections 42a, 42b in detail. The connecting means 31 is arranged at the axial end of the second end section 42b. The hook element 11 is arranged at the first end section 42a. The connecting means 31 and the hook element 11 are each connected to a perforated disc 20.

[0076] Figure 12 shows the railing 40 according to the embodiment of Figures 9 and 10 installed on a scaffold. It can be seen that two railings 40 are arranged one above the other on one side of a staircase. Alternatively or additionally, additional railings 40 can be mounted on the staircase, for example, on the opposite side of the staircase.

[0077] In addition, with regard to the other scaffolding components and their arrangement and construction in the scaffolding, reference is made to the disclosure of DE 10 2020 132 056 A1.

[0078] The present invention is not limited to the embodiments described above as long as it is encompassed by the subject matter of the following claims.

[0079] Additionally, it should be noted that the terms "comprising" and "having" do not exclude other elements or steps, and the indefinite articles "a" or "an" do not exclude a plurality. Furthermore, it should be noted that features or steps described with reference to the above embodiments may also be used in combination with other features.

[0080] List of reference symbols

[0081] 10 railing rail

[0082] 11 Hook element

[0083] 12 pipe sections

[0084] 13 connecting section

[0085] 14 Hook section

[0086] 15 Rear grip section

[0087] 16 Longitudinal axis of railing

[0088] 17 angles

[0089] 18 angles

[0090] 19 Longitudinal axis of the heel section

[0091] 20 hole disc

[0092] 21 Vertical post

[0093] 22 openings

[0094] 23 openings

[0095] 30 railing post

[0096] 31 lanyards

[0097] 32 connection head

[0098] 33 joint

[0099] 34 Tab element

[0100] 35 claws

[0101] 36 locking bolts

[0102] 40 banister (stair railing)

[0103] 41 Middle section

[0104] 42a first end section

[0105] 42b second end section

Claims

Claims 1. A railing post (10; 30; 40) for the forward longitudinal fall protection of a scaffold, comprising: at least one hook element (11) arranged at one end of the railing post (10; 30; 40) and configured to engage with a perforated disc (20) provided on a vertical post (21); wherein the hook element (11) comprises at least one hook portion (14) arranged at an angle to a longitudinal axis (16) of the railing post (10; 30; 40); and wherein the hook element (11) comprises at least one rear grip portion (15) arranged at an angle to the longitudinal axis (16) of the railing post (10; 30; 40).

2. Railing post (10; 30; 40) according to claim 1, wherein the hook element (11) further comprises a connecting portion (13) which is connected to a tube portion (12) of the railing post (10; 30; 40), wherein the connecting portion (13) of the hook element (11) is arranged coaxially and parallel to the longitudinal axis (16) of the railing post (10; 30).

3. Railing post (10; 30; 40) according to claim 1 or claim 2, wherein the hook portion (14) is arranged at an angle between 25° and 90°, preferably between 35° and 60°, particularly preferably between 40° and 50° and most particularly preferably at an angle between 46° and 47° to the longitudinal axis (16) of the railing post (10; 30; 40).

4. Railing bar (10; 30; 40) according to one of the preceding claims, wherein the connecting section (13) has a length between 2 and 5 cm, preferably 2.5 to 3.5 cm.

5. Railing rail (10; 30; 40) according to one of the preceding claims, wherein the hook element (11) has a circular cross-section and is preferably provided as a bent part, and wherein the cross-section of the hook element (11) is preferably between 8 and 15 mm and particularly preferably between 11 and 13 mm.

6. Railing post (10; 30; 40) according to one of the preceding claims, wherein the rear grip section (15) is arranged at an angle between 20° and 80°, preferably between 30° and 50° and very particularly preferably at an angle of 45° to the longitudinal axis (16) of the railing post (10; 30; 40).

7. Railing rail (10; 30; 40) according to one of the preceding claims, wherein the rear grip section (15) has a length between 15 and 80 mm, preferably between 30 and 60 mm and particularly preferably 50 mm.

8. Railing post (10; 30; 40) according to one of the preceding claims, wherein the hook element (11) is integrally formed.

9. Railing post (10; 30; 40) according to one of the preceding claims, wherein the railing post (10; 30; 40) comprises two hook elements (11) which are arranged at opposite ends of the railing post (10; 30; 40) and which are each adapted to be brought into engagement with a perforated disc (20) provided on a vertical post (21).

10. Railing post (10; 30; 40) according to claim 9, wherein the two hook elements (11) are oriented towards the same side of the railing post (10; 30; 40) and are designed to be correspondingly angled.

11. Railing post (10; 30; 40) according to one of claims 1 to 8, wherein the railing post (10; 30; 40) comprises a hook element (11) at one end of the railing post (10; 30; 40) and a further connecting means (31) with a connection head (32) at an opposite end of the railing post (10; 30; 40) which is designed to be pivotable about an axis which is arranged perpendicular to the longitudinal axis (16) of the railing post (10; 30; 40).

12. Railing post (10; 30; 40) according to claim 11, wherein the connecting head (32) is arranged on a pivot bearing / joint (33) in order to make the connecting head (32) pivotable, and wherein the pivot bearing / joint (33) is preferably provided in a tab element (34) which extends perpendicular to the longitudinal axis (15) of the railing post (10; 30; 40).

13. Railing post (10; 30; 40) according to one of the preceding claims, wherein the railing post (10; 30; 40) is formed from a metal tube, on which a first hook element (11) is arranged at one end and a second hook element (11) or a further connecting means (31) is arranged at the opposite end of the railing post (10; 30; 40), and wherein the metal tube preferably has a circular cross-section.

14. Railing post (10; 30; 40) according to one of the preceding claims, wherein the two hook elements (11) or the hook element (11) and the further connecting means are each provided in the installed position on an underside of the metal tube.

15. Scaffolding with at least one railing post (10; 30; 40) according to one of the preceding claims and a vertical post (21) which comprises at least one perforated disc (21) for connection to a hook element (11) of the railing post (10; 30; 40), wherein the perforated disc (20) is preferably designed as a rosette surrounding the vertical post (21) and which has a plurality of, preferably at least four, openings (22) of the same type and arranged at the same angular distance from one another for receiving a hook section (14) of a hook element (11) of the railing post (10; 30; 40).

16. Scaffolding according to claim 15, wherein the perforated disc (20) has further openings (23) for receiving further scaffolding components, in particular planking bars and / or longitudinal bars which run horizontally in the position of use.

17. A method for erecting a scaffold in which a railing beam (10; 30; 40) according to one of claims 1 to 14 is connected to a first and a second vertical post (21), comprising: Engaging a hook element (11) of the hook element (11) arranged at one end of the railing post (10; 30; 40) with a perforated disc (20) arranged on the first vertical post (21); Connecting the other end of the railing post (10; 30; 40) to the second vertical post (21); Positioning the railing bar (10; 30; 40) with the aid of the second vertical post (21), which is brought into its position of use for this purpose.

18. The method of claim 17, further comprising: Engaging a horizontally extending decking bar and / or a longitudinal bar on the perforated discs (20) on which the railing post (10; 30; 40) is arranged, so that the longitudinal axis (16) of the railing post (10; 30; 40) and the longitudinal axis of the horizontal decking bar are arranged parallel to one another; Remove the railing bar (10; 30; 40) from the perforated discs (20).

19. Use of a railing post (10; 30; 40) according to one of claims 1 to 14 as a leading railing post (10; 30; 40) in a method according to claim 17 or claim 18 and / or use of a railing post (10; 30; 40) according to one of claims 1 to 14 as a stair railing.

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