Stanchion for scaffolding, scaffolding, and method for producing a stanchion

Abstract

The invention relates to a stanchion (10) for scaffolding (100), in particular for modular scaffolding, wherein the stanchion (10) comprises a tube (11) with a longitudinal axis (A), which tube has, in at least one tube portion (12) - an outer connection element (20) for connecting the stanchion (10) to a horizontal bar (40) and - an inner reinforcement element (30) for reinforcing the tube portion (12) in a region (13) where the stanchion (10) contacts the horizontal bar (40), wherein the reinforcement element (30) has an elongate shape and extends transversely to the longitudinal axis (A) of a first wall region (14) as far as a second wall region (15) of the tube (11), which second wall region is preferably diametrically opposite the first wall region (14). The invention also relates to scaffolding (100), in particular modular scaffolding, having a stanchion (10) according to the invention and to a method for producing a stanchion (10).

Description

[0001] PERI SE

[0002] Rudolf-Diesel-Straße 19, 89264 Weißenhorn, Germany

[0003] Vertical post for a scaffold, scaffold and method for producing a vertical post

[0004] Reference to related applications

[0005] This application claims priority from German patent application No. 10 2022 107 159.6, filed on March 25, 2022, which is incorporated in its entirety by reference into this document.

[0006] The invention relates to a vertical post for a scaffold, in particular a modular scaffold, and to a scaffold, in particular a modular scaffold, with a corresponding vertical post. Furthermore, a method for producing a vertical post is proposed.

[0007] Technical background

[0008] To enable rapid assembly and dismantling of scaffolding, prefabricated, standardized scaffolding components are typically used. The scaffolding components are connected to one another using standardized connecting elements and / or connection nodes, which ideally allow connections from different spatial directions. The scaffolding components can thus be combined to form complex surface or three-dimensional scaffolds.

[0009] As a scaffold's height increases, so do the loads acting on the scaffold components and their connections. This can lead to excessive stress, particularly in the area where a horizontal ledger connects to a vertical post, imposing limits on the maximum scaffold height. To remedy this, a vertical post made of a tube with a larger outer diameter and / or increased wall thickness can be used. However, this measure increases the weight of the vertical post, making it more difficult to handle.

[0010] SZ EP 0 990 748 A1 discloses a vertical scaffold tube to which at least one holding device is attached, into which horizontal and / or diagonal scaffold tubes can be suspended. To improve the load-bearing capacity of the vertical scaffold tube, it is reinforced in the area where the holding device is attached. This means that the scaffold tube is only locally reinforced, so that the weight only increases insignificantly. Various measures are proposed for local reinforcement, but these either result in changed external dimensions of the vertical scaffold tube, so that compatibility with other standardized scaffold components is no longer guaranteed, or are complex and therefore costly.

[0011] The present invention is therefore concerned with the task of improving the load-bearing capacity of a vertical post in such a way that the disadvantages mentioned above do not occur.

[0012] To achieve this object, the vertical post having the features of claim 1, the scaffold having the features of claim 7, and the method for producing a vertical post having the features of claim 10 are proposed. Advantageous further developments of the invention can be found in the respective subclaims.

[0013] Disclosure of the invention

[0014] A vertical post for scaffolding, in particular for modular scaffolding, is proposed. The vertical post comprises a tube with a longitudinal axis A, which, in at least one tube section, has an external connecting element for connecting the vertical post to a horizontal bar, as well as an internal reinforcing element for reinforcing the tube section in a contact area between the vertical post and the horizontal bar. The reinforcing element is elongated and extends transversely to the longitudinal axis A from a first wall region to a second wall region of the tube, which is preferably diametrically opposite the first wall region.

[0015] The reinforcement element extending from the first wall area to the second wall area locally strengthens the vertical post. This enables the vertical post to absorb high loads introduced into the contact area by the adjacent horizontal beam. The load-bearing capacity of the vertical post increases accordingly. At the same time, the risk of deformation of the vertical post in the contact area with the horizontal beam due to excessive loads is reduced.

[0016] Since the vertical post is particularly exposed to increased compressive loads from the adjacent horizontal beam, the reinforcing element preferably extends parallel to the horizontal beam. Furthermore, the reinforcing element is preferably arranged as an extension of the horizontal beam. The compressive force introduced via the horizontal beam is then directly absorbed by the reinforcing element. For example, the reinforcing element can be arranged such that, in the floor plan projection, a longitudinal axis of the reinforcing element coincides with a longitudinal axis A' of the horizontal beam. In this case, the longitudinal axis A' preferably intersects the longitudinal axis A of the tube of the vertical post. The reinforcing element then extends from a first wall region to a second wall region of the tube diametrically opposite the first wall region, so that the tube is optimally reinforced or stiffened.

[0017] The purely local reinforcement of the vertical post by the reinforcement element only increases the weight of the vertical post insignificantly, even if the vertical post is locally reinforced with reinforcement elements in multiple contact areas and / or in multiple tube sections. The single- or multiply reinforced vertical post thus remains easy to handle. Because at least one reinforcement element is also arranged internally, the external dimensions of the vertical post remain unchanged. This maintains the compatibility of the vertical post with other standardized scaffolding components.

[0018] Reinforcing the vertical post with the help of at least one reinforcing element can also be implemented simply and cost-effectively. This is especially true when a simple bolt or pin is used as the reinforcing element. The reinforcing element can also be a simple elongated plate that extends transversely to the longitudinal axis A in a web-like manner from the first wall area to the second wall area.

[0019] Advantageously, an opening is formed in the first wall region and / or in the second wall region, in which the reinforcing element is received at the end. In this way, a positive connection is achieved between the reinforcing element and the pipe, which holds the reinforcing element in position. Preferably, an opening is formed in each of the first wall regions and the second wall regions, into which the reinforcing element is inserted at the end. Furthermore, at least one opening is preferably designed such that it penetrates the wall of the pipe. The reinforcing element can thus be inserted from the outside into the opening during manufacture of the vertical post and thus into the pipe section to be reinforced. This facilitates the manufacture of the vertical post. If, in addition, the reinforcing element remains visible from the outside, the vertical post can be identified at any time on a construction site as a locally reinforced vertical post.

[0020] Preferably, the length of the reinforcement element is selected to be no greater than the pipe diameter of the vertical post, ensuring that the reinforcement element does not protrude outward. This is because the external dimensions of the vertical post should not be altered by the reinforcement element. According to a particularly preferred embodiment of the invention, the length of the reinforcement element corresponds to the pipe diameter of the vertical post, so that the reinforcement element is flush with the pipe diameter. This avoids recesses in which surface water can collect.

[0021] Furthermore, the shape of the opening accommodating the reinforcing element is preferably adapted, at least in sections, to the cross-sectional shape of the reinforcing element. In this way, the positive connection between the reinforcing element and the tube can be optimized, so that the reinforcing element is securely held in the opening. If the reinforcing element has a circular cross-section, for example, the opening can also be circular or at least semicircular, for example as an elongated hole with a semicircular end section for accommodating the reinforcing element. A circular cross-sectional shape of the reinforcing element enables the use of a simple bolt as the reinforcing element. Furthermore, a variety of other cross-sectional shapes are also conceivable.

[0022] The reinforcing element is preferably made of steel because steel has high strength.

[0023] Furthermore, it is proposed that the reinforcing element be firmly connected, preferably welded, to the tube of the vertical post. The firm connection, in particular welding, ensures that the reinforcing element is securely held in the tube of the vertical post. This is particularly advantageous during the assembly and dismantling of a scaffold using a vertical post according to the invention. If at least one opening accommodating the reinforcing element is designed such that the opening extends through the wall, the welding can be easily performed from the outside.

[0024] Furthermore, the reinforcing element is preferably arranged at an axial distance from the connecting element. This means that the height of the reinforcing element and the height of the connecting element differ. Thus, a conventional vertical post can be subsequently reinforced and thus upgraded with at least one connecting element for connection to a horizontal bar.

[0025] Preferably, at least one reinforcement element is arranged above and / or below the connecting element with respect to the final installation position of the vertical post. This applies in particular if the contact area of ​​the horizontal bar extends from above the connecting element to below the connecting element, or if a first contact area is located above and a second contact area below the connecting element. The vertical post is then reinforced at the particularly stressed and therefore critical points.

[0026] According to a preferred embodiment of the invention, the tubular section of the vertical post is reinforced in the contact area with the horizontal ledger by a plurality of reinforcing elements. Since usually at least two horizontal ledgers, which are arranged in a scaffolding plane and run transversely to one another, are connected to the vertical ledger via the connecting element, the vertical post can be reinforced in each contact area with a horizontal ledger. Preferably, the plurality of reinforcing elements are arranged offset from one another in terms of their height and / or angular position. Due to the height and / or angular offset, the plurality of reinforcing elements can be arranged in a cross or star shape, so that the vertical post is optimally reinforced in the various contact areas with one and / or more horizontal ledgers.

[0027] Preferably, each reinforcing element is accommodated in an opening at each of its two ends, so that at least two openings are always opposite each other. For two reinforcing elements arranged in a cross pattern, four openings are therefore provided in the tube at the same angular distance from each other, so that two openings are opposite each other. To simplify the insertion of reinforcing elements arranged in a cross or star pattern, the openings are preferably arranged not only angularly offset, but also vertically offset. The vertical offset can be chosen to be so small that the reinforcing elements touch each other.

[0028] Since each horizontal bar adjoining the vertical post can have multiple contact areas with the vertical post, openings for receiving reinforcement elements are preferably provided above and below the rosette-like connecting element of the vertical post. These openings are preferably located where the greatest pressure points of the horizontal bar adjoining the vertical post are. These openings can lie exactly one above the other, so that in this case the openings for receiving the reinforcement elements are arranged at the same angular position above and below the rosette-like connecting element. This means that the openings and the reinforcement elements accommodated therein above and below the rosette-like connecting element also lie exactly one above the other in the floor plan projection.

[0029] In a further development of the invention, it is proposed that the connecting element for connecting the vertical post to the horizontal ledger is designed in a rosette-like manner and has at least one receiving opening for receiving connecting means of the horizontal ledger. The rosette-like connecting element is preferably arranged coaxially or concentrically with respect to the longitudinal axis A on the tube of the vertical post, thus resulting in connection options for connecting horizontal ledgers from different directions. Furthermore, the connecting element preferably has a plurality of receiving openings arranged at the same angular distance from one another for receiving connecting means of horizontal ledgers. In addition, the connecting element can have further recesses that offer connection options for further scaffolding components.

[0030] The proposed vertical post preferably has several rosette-like connecting elements distributed along the length of the vertical post, i.e., arranged in different pipe sections. This increases the connection options on the vertical post. Preferably, all pipe sections in which a rosette-like connecting element is arranged are reinforced by at least one reinforcing element housed in the pipe. Preferably, at least one reinforcing element is arranged above and below each rosette-like connecting element.

[0031] Since the preferred field of application of a vertical post according to the invention is a scaffold, in particular a modular scaffold, a scaffold, in particular a modular scaffold, with a vertical post according to the invention and a horizontal bar is further proposed. The horizontal bar is connected to the vertical post via the connecting element of the vertical post. Because the vertical post according to the invention is locally reinforced in the contact area with the horizontal bar, the load-bearing capacity of the vertical post is increased. Loads introduced by the horizontal bar, in particular compressive loads, can thus be better absorbed. As a result, the risk of deformation of the vertical bar under load is reduced.

[0032] In the proposed scaffold, the connecting element is preferably designed in a rosette-like manner, and the horizontal bar has connecting means that engage in at least one receiving opening of the connecting element. The connecting means can comprise a wedge element for locking the connecting means within the receiving opening of the connecting element, thus preventing the connecting means from undesirably slipping out of the receiving opening. The wedge element can, for example, be driven in from above after the connecting means have been inserted into the receiving opening.

[0033] Preferably, the horizontal bar rests against the vertical post in the contact area via its connecting means and / or a preferably concave end face area. This means that the vertical post can also have multiple contact areas with the horizontal bar. For example, in a first contact area, the horizontal bar can rest against the vertical post via a preferably concave end face area, wherein the first contact area is preferably arranged above the connecting element receiving the connecting means of the horizontal bar. In a second contact area, which is preferably arranged below the connecting element, the horizontal bar can rest against the vertical post via its connecting means. The load introduced from the horizontal bar into the vertical bar is thus distributed, which also has a positive effect on the load-bearing capacity of the vertical post.Furthermore, the vertical post is preferably locally reinforced in both contact areas by an internal, elongated reinforcement element. For this purpose, the two reinforcement elements are arranged at an axial distance from one another, such that a first reinforcement element is arranged above the connecting element and a second reinforcement element is arranged below the connecting element.

[0034] Furthermore, a method for producing a vertical post for a scaffold, in particular for a modular scaffold, is proposed. The method comprises the following steps:

[0035] Providing a tube with a longitudinal axis A,

[0036] Fastening a connecting element for connecting the vertical post to a horizontal bar in at least one pipe section of the pipe,

[0037] Making an opening in a wall area of ​​the pipe section, wherein the opening preferably penetrates the wall of the pipe,

[0038] Inserting an elongated reinforcement element into the opening such that the reinforcement element extends transversely to the longitudinal axis A from the first wall region to a second wall region of the pipe section, which second wall region is preferably diametrically opposite the first wall region.

[0039] The sequence of process steps can vary. For example, an opening can be made in the pipe first, the reinforcement element inserted, and then the connecting element attached to the pipe. The connecting element can also be attached before the reinforcement element is inserted.

[0040] The reinforcement element can improve the load-bearing capacity of the vertical post, as the reinforcement element extends from a first wall section of the tube to a second wall section, which is preferably diametrically opposite the first wall section. The reinforcement element thus connects the two wall cross-sections, so that the load-bearing cross-section extends from the first wall region across the reinforcement element to the second wall section.

[0041] Preferably, the reinforcing element and the connecting element are aligned with one another in such a way that, in the floor plan projection, a horizontal bar connected to the vertical post via the connecting element and the reinforcing element have a common longitudinal axis. This means that the reinforcing element is arranged as an extension of the horizontal bar. The load introduced into the vertical post via the horizontal bar can then be absorbed directly by the reinforcing element. Because the reinforcing element is inserted into an opening, it is held in the pipe in a form-fitting manner. If the opening penetrates the wall of the pipe, the reinforcing element can be inserted from the outside, which significantly simplifies the manufacture of the vertical post. Furthermore, the vertical post can later be identified as a reinforced vertical post based on the opening visible from the outside and the reinforcing element inserted therein.

[0042] A further opening is preferably formed in the second wall area, and the reinforcing element is inserted into the further opening at its end. The reinforcing element is then received at each of its two ends in an opening in the tube, thus optimally retaining it within the tube. The further opening can also extend through the wall of the tube, so that both openings and both ends of the reinforcing element inserted therein remain clearly visible for identification of the vertical post.

[0043] Advantageously, the reinforcing element is firmly connected, preferably welded, to the tube of the vertical post. This ensures that the reinforcing element is permanently held captively in the tube. This applies in particular when the reinforcing element is inserted from the outside into at least one wall-side opening of the tube. The firm connection, in particular welding, prevents the reinforcing element from slipping out of the opening, for example, during the assembly or dismantling of scaffolding. The reinforcing element is preferably welded to the tube at both ends, particularly when both ends of the reinforcing element are accommodated in openings in the tube. The welding can then be carried out easily from the outside.

[0044] If the reinforcing element is to be welded to the pipe, a reinforcing element can be used which has a recess in at least one end section. Welding can then be carried out in the region of the recess so that the weld seam remains within the recess and does not protrude outwards. The weld seam can also be designed and arranged in such a way that the recess is no longer visible after welding. To form the recess, the reinforcing element can, for example, be stepped at the ends. Furthermore, it is proposed that the shape of the at least one opening for receiving the reinforcing element be adapted, at least in sections, to the cross-sectional shape of the reinforcing element. Any end-side recess in the reinforcing element for receiving welding material is disregarded, since otherwise the recess can no longer fulfill its purpose.Alternatively or in addition to the end recess of the reinforcement element, the opening accommodating the reinforcement element can be made larger in certain sections so that the weld seam can be placed in this area. For example, the opening can be designed as an elongated hole, the shape of which is adapted, at least in sections, to the cross-sectional shape of the reinforcement element.

[0045] The at least one opening for receiving the reinforcing element is preferably introduced into the pipe section at an axial distance from the connecting element, so that after insertion of the reinforcing element into the at least one opening, the pipe section above or below the connecting element is locally reinforced with respect to the final installation position of the vertical post. The exact position depends on the position of the contact area of ​​the vertical post with the horizontal bar, which is connected to the vertical post via the connecting element. For example, the horizontal bar can have connecting means that can be brought into engagement with a receiving opening of the connecting element and that rest against the vertical post below the connecting element. Alternatively or additionally, the horizontal bar can have an end face area that rests against the vertical post above the connecting element.If the latter is the case, the end face area is preferably concave in shape to enlarge the contact area and improve load distribution.

[0046] Since the vertical post can have multiple contact areas with the horizontal bar, a further development of the invention proposes that the vertical post be locally reinforced both above and below the connecting element for connecting the horizontal bar to the vertical post. This means that at least one opening for accommodating a reinforcement element is made in the pipe both above and below the connecting element. If the connecting element is only attached to the pipe after the opening has been made, the subsequent position of the connecting element must be taken into account when making the openings.

[0047] The connecting element can be, for example, a rosette-like

[0048] This can be a connecting plate that is arranged coaxially or concentrically with the pipe and allows the connection of several horizontal beams from different directions via several equally spaced receiving openings. In this way, for example, two horizontal beams running perpendicular to each other can be connected to the vertical post via the connecting element.

[0049] As a further development, it is therefore proposed that several openings be created in the tubular section of the vertical post to accommodate several reinforcement elements, which are arranged offset from one another in terms of their height and / or angle. This allows for a cross- or star-shaped arrangement of several reinforcement elements, so that each of them can be arranged as an extension of a horizontal bar. This optimally accommodates the various connection options offered by the connecting element.

[0050] According to a preferred embodiment of the invention, the vertical post has two mutually perpendicular reinforcing elements both above and below the connecting element, which are arranged slightly offset in height so that they can be guided past each other. In plan view, this results in a cross-shaped arrangement. In the final installation position of the vertical post, the longitudinal axes of the reinforcing elements preferably coincide with the scaffolding axes.

[0051] To expand the connection options on the vertical post, it is further proposed that several rosette-like connecting elements be distributed along the length of the vertical post. Preferably, all pipe sections that have rosette-like connecting elements are then locally reinforced using at least one reinforcing element incorporated into the pipe.

[0052] A preferred embodiment of the invention is described in more detail below with the aid of the accompanying drawings. These show:

[0053] Fig. 1 is a perspective view of a vertical stem according to the invention,

[0054] Fig. 2 is a perspective view of the vertical post of Fig. 1 and a horizontal bar connected to the vertical post, and Fig. 3 is a plan view of the arrangement of Fig. 2.

[0055] Detailed description of the characters

[0056] The vertical post 10 according to the invention, shown in Figure 1, comprises a tube 11 with a longitudinal axis A and a tube section 12, on which a rosette-like connecting element 20 is arranged for connecting the vertical post 10 to a horizontal bar 40 (see Figure 2). For this purpose, the connecting element 20 has a plurality of receiving openings 21 arranged at equal angular spacing from one another.

[0057] Above and below the connecting element 20, openings 16 are provided in the pipe section 12, which are designed here as elongated holes. A bolt-like reinforcing element 30 is inserted into each of the openings 16, running transversely to the longitudinal axis A of the pipe 11. The openings 16 each penetrate the wall of the pipe 11, so that the reinforcing elements 30 can each be inserted into the openings 16 from the outside. By designing the openings 16 as elongated holes, the reinforcing elements 30 inserted therein can be easily welded to the pipe 11. The welding ensures a firm connection of the reinforcing elements 30 to the vertical post 10, so that the reinforcing elements 30 cannot fall out of the openings 16. As can be seen from Figure 1, the reinforcing elements 30 or openings remain visible, so that the vertical post 10 can be identified as a locally reinforced vertical post 10.

[0058] The position of the reinforcement elements 30 is determined by a contact area 13 of the vertical post 10 with a horizontal bar 40, which is later connected to the vertical post 10 via the connecting element 20. The two reinforcement elements 30 arranged above and below the connecting element 20 run parallel to each other. This means that the openings 16 lie one above the other at an axial distance from each other. The same applies to one of the four receiving openings 21 of the connecting element 20, ensuring that the horizontal bar 40 connected to it rests in the contact areas 13 on the vertical post 10. The vertical post 10 is thus locally reinforced by the reinforcement elements 30 in the contact areas 13.

[0059] Figure 2 shows a section of a scaffold 100 comprising the vertical post 10 of Figure 1 and a horizontal bar 40. The horizontal bar 40 has connecting means 41 that engage in a receiving opening 21 of the connecting element 20. The connecting means 41 comprise a wedge element 43, with the aid of which the connecting means 41 are locked in the receiving opening 41. The wedge element 43 presses the connecting means 41 against the vertical post 10 so that they come into contact with the vertical post 10 in a first contact area 13. Since a first reinforcing element 30 is arranged in the first contact area 13, the load introduced by the horizontal bar 40 is absorbed by the reinforcing element 30. This means that the load-bearing capacity of the vertical post 10 increases in the first contact area 13.In a second contact area 13, in which the horizontal bar 40 further comes into contact with the vertical post 10 via a concavely shaped end face area 42, the introduced load is absorbed by the second reinforcement element 30 arranged in this area. This also contributes to increasing the load-bearing capacity of the vertical post 10.

[0060] When the horizontal beam 40 is suspended, at least the elongated openings 16, in which the two reinforcement elements 30 are accommodated, remain visible. Thus, it remains visible to everyone that the vertical post 10 of the scaffold 100 is locally reinforced.

[0061] Figure 3 shows the scaffold 100 in a plan view of the vertical post 10. Figure 3 makes it clear that the two reinforcing elements 30 each extend from a first wall region 14 to a second wall region 15, which is preferably diametrically opposite the first wall region 14. This is particularly advantageous if the connection of the horizontal bar 40 is made in the manner shown, so that a longitudinal axis A' of the horizontal bar 40 intersects the longitudinal axis A of the tube 11 of the vertical post 10. This is because the two reinforcing elements 30 are then each arranged in extension of the horizontal bar 40, specifically centrally with respect to the longitudinal axis A' of the horizontal bar 40. This means that in the floor plan projection, the longitudinal axes of the two reinforcing elements 30 coincide with the longitudinal axis A' of the horizontal bar 40.

[0062] In Figure 3, the horizontal ledger 40 connects to the vertical post 10 from the right. If the scaffold 100 is extended, another horizontal ledger 40 can be connected from the left. Since the reinforcing elements 30 each extend from the first wall region 14 to the second wall region 15, which in this case is diametrically opposite the first wall region 14, the reinforcing elements 30 improve the load-bearing capacity of the vertical post 10, regardless of whether a horizontal ledger 40 is connected from the right and / or the left.

[0063] The rosette-like connecting element 20 shown also enables the connection of two additional horizontal ledgers 40 (not shown) that run transversely to the horizontal ledger 40, so that they - with reference to Figure 3 - connect to the vertical post 10 from above or below. To further optimize the load-bearing capacity of the vertical post 10, two additional reinforcing elements 30 (not shown) can be provided, which run perpendicular to the illustrated reinforcing elements 30 or as an extension of the additional (not shown) horizontal or transverse ledgers. The arrangement is then offset in height and angle relative to the already existing reinforcing elements 30. This results in a cross-shaped arrangement that is ideally based on the scaffold axes (not shown) of the scaffold 100.

[0064] List of reference symbols

[0065] 10 vertical stems

[0066] 11 pipe

[0067] 12 pipe sections

[0068] 13 Contact area

[0069] 14 Wall area

[0070] 15 Wall area

[0071] 16 Opening

[0072] 20 connecting element

[0073] 21 Receiving opening

[0074] 30 Reinforcing element

[0075] 40 horizontal bars

[0076] 41 lanyards

[0077] 42 Frontal area

[0078] 43 wedge element

[0079] 100 scaffolding

Claims

Patent claims 1. Vertical upright (10) for a scaffold (100), in particular for a modular scaffold, wherein the vertical upright (10) comprises a tube (11) with a longitudinal axis (A) which in at least one tube section (12) has an external connecting element (20) for connecting the vertical upright (10) to a horizontal beam (40) and an internal reinforcing element (30) for reinforcing the tube section (12) in a contact area (13) of the vertical upright (10) with the horizontal beam (40), wherein the reinforcing element (30) is elongated and extends transversely to the longitudinal axis (A) from a first wall area (14) to a second wall area (15) of the tube (11), which is preferably diametrically opposite the first wall area (14).

2. Vertical stem (10) according to claim 1, characterized in that an opening (16) is formed in the first wall area (14) and / or in the second wall area (15) in which the reinforcing element (30) is received at its end, wherein preferably the shape of the opening is adapted at least partially to the cross-sectional shape of the reinforcing element (30).

3. Vertical stem (10) according to claim 1 or 2, characterized in that the reinforcing element (30) is made of steel and / or is firmly connected to the tube (11) of the vertical stem (10), preferably welded.

4. Vertical stem (10) according to one of the preceding claims, characterized in that the reinforcing element (30) is arranged at an axial distance to the connecting element (20), wherein preferably at least one reinforcing element (30) is arranged above and / or below the connecting element (20) with respect to the final installation position of the vertical stem (10).

5. Vertical stem (10) according to one of the preceding claims, characterized in that the tube section (12) in the contact area (13) is reinforced by several reinforcing elements (30) which are preferably arranged offset from each other with respect to their height and / or angular position.

6. Vertical stem (10) according to one of the preceding claims, characterized in that the connecting element (20) for connecting the vertical stem (10) to the horizontal bar (40) is rosette-shaped and has at least one receiving opening (21) for receiving connecting means (41) of the horizontal bar (40).

7. Scaffold (100), in particular modular scaffold, comprising a vertical upright (10) according to one of the preceding claims and a horizontal beam (40) which is connected to the vertical upright (10) via the connecting element (20) of the vertical upright (10).

8. Scaffold (100) according to claim 7, characterized in that the connecting element (20) is rosette-shaped and the horizontal bar (40) has connecting means (41) that engage in at least one receiving opening (21) of the connecting element (20).

9. Frame (100) according to claim 7 or 8, characterized in that the horizontal beam (40) in the contact area (13) rests against the vertical post (10) via its connecting means (41) and / or an end face area (42), which is preferably concave.

10. Method for manufacturing a vertical post (10) for a scaffold (100), in particular for a modular scaffold, comprising the steps: Providing a pipe (11) with a longitudinal axis (A), Attaching a connecting element (20) for connecting the vertical stem (10) to a horizontal bar (40) in at least one pipe section (12) of the pipe (11), providing an opening (16) in a wall area (14) of the pipe section (12), wherein preferably the opening (16) penetrates the wall of the pipe (11), Inserting an elongated reinforcing element (30) into the opening (16) such that the reinforcing element (30) extends transversely to the longitudinal axis (A) from the first wall area (14) to a second wall area (15) of the pipe section (12), which is preferably diametrically opposite the first wall area (14).

11. Method according to claim 10, characterized in that a further opening (16) is formed in the second wall area (15) and the reinforcing element (30) is inserted into the further opening (16) at its end.

12. Method according to claim 10 or 11, characterized in that the reinforcing element (30) is made of steel and / or is firmly connected, preferably welded, to the tube (11) of the vertical stem (10).

13. Method according to one of claims 10 to 12, characterized in that the shape of the at least one opening (16) is adapted at least section by section to the cross-sectional shape of the reinforcing element (30).

14. Method according to one of claims 10 to 13, characterized in that the at least one opening (16) for receiving the reinforcing element (30) is provided in the pipe section (12) at an axial distance to the connecting element (20), so that after the reinforcing element (30) is inserted into the at least one opening (16) the pipe section (12) is reinforced above or below the connecting element (20) with respect to the final installation position of the vertical stem (10).

15. Method according to one of claims 10 to 14, characterized in that several openings (16) for receiving several reinforcing elements (30) are provided in the pipe section (12), which are preferably arranged offset from each other with respect to their height and / or angular position.

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