Vertical frame system for a system frame

Abstract

The invention relates to a vertical frame system (2) for a system scaffold (1) comprising two vertical uprights (3) and a horizontal beam (4), which are designed to be detachably connected to each other to form an H-shaped vertical frame, and a locking element (3b, R) for each vertical upright (3), configured to lock the detachable connection, wherein: - the horizontal beam (4) has a support (4a) at its end faces, wherein the supports (4a) are oriented such that the vertical uprights (3) can be inserted into the receiving grooves (A) from different sides, - each vertical upright (3) has a bead (3a) in its central region as a locking element (3a), which is designed to prevent the horizontal beam (4) from sliding downwards along the vertical upright (3), - each locking element (3b, R) is configured to lock a vertical upright (3) in the receiving groove (A). lock.The invention further relates to a corresponding system framework and a method for constructing the framework.

Description

[0001] The invention relates to a vertical frame system for a system scaffold as well as a system scaffold with such a vertical frame system and a method for erecting such a system scaffold.

[0002] Scaffolding has existed for several centuries and is a temporary auxiliary structure made of scaffolding components used as a working platform, for securing formwork, or as a protective device. This invention relates to working scaffolding, which is used to carry out work on hard-to-reach building components, and to protective scaffolding, which is designed to protect workers and pedestrians from falling or to protect them from falling components.

[0003] There are many different types of scaffolding, including free-standing scaffolding that stands on the ground, suspended scaffolding that is attached to buildings, cantilever scaffolding, and console scaffolding. Even though scaffolding is simply assembled from poles, ladders, and boards, modern construction has become more commonplace with system scaffolding that consists of standardized components. Examples of scaffolding used include frame scaffolding, which often has base plates resting on the ground into which vertical frames are inserted. These frames are connected horizontally to decking that can serve as walking and working surfaces. Horizontal ledgers and diagonal braces provide additional stability. The space between two vertical frames and two decking sections is often referred to as a scaffold bay, a scaffolding level as a scaffolding level, and a vertical arrangement of several scaffold bays as a scaffolding section.

[0004] The individual scaffolding levels are equipped with railings to prevent people from falling. Railings are often made up of two horizontal poles: the upper railing and the intermediate rail located between the railing and the decking. Recently, attempts have been made to equip a new scaffolding level with a railing as it is being erected, so that further construction can proceed safely on this level. This can be achieved with auxiliary railings temporarily attached to the outside of the scaffolding or with a so-called leading railing. Such a leading railing of a scaffolding level is erected from a scaffolding level below, i.e. from a fall-safe position.

[0005] A disadvantage of the current technology is the relatively bulky design of the vertical frames, which are often formed from rectangular, U-shaped, or H-shaped steel tubes. Such vertical frames are comparatively heavy, especially if they are intended to be used to construct a forward-extending railing, and require a relatively large storage volume.

[0006] Another disadvantage of the current state of the art, at least with rectangular vertical frames, is that they end at the base of the next scaffolding level. This makes installing a forward-extending railing difficult or even impossible. Solutions for installing a forward-extending railing already exist, but they require additional elements, such as auxiliary railings, or the existing system components must be replaced with a new scaffolding system that allows for the installation of a forward-extending railing.

[0007] WO 2015 / 187010 A1 discloses a vertical frame system having the features of the introductory part of claim 1.

[0008] The object of the invention was to overcome the disadvantages of the prior art and to provide a vertical frame system for a system scaffold or a system scaffold which can be stored in a space-saving manner when dismantled and can in particular also be used to erect a scaffold with a leading railing. In particular, an object of the invention is that the existing scaffolding equipment does not have to be replaced and that the vertical frame system can preferably be combined with the existing scaffolding parts. This object is achieved by a vertical frame system for a system scaffold as well as a system scaffold with such a vertical frame system and a method for erecting such a system scaffold according to the claims.

[0009] It should be noted in advance that position specifications such as "top," "bottom," or "side" are based on the intended arrangement of the respective component within a scaffolding system. For example, the ends of vertical uprights are at the top and bottom. The terms "horizontal" and "vertical" follow these position specifications, so that, for example, "vertical" corresponds to "aligned vertically from bottom to top." The term "longitudinal" means "parallel to the longitudinal axis." All position specifications are within the range of typical scaffolding tolerances.

[0010] The vertical frame system for a scaffolding system according to claim 1 comprises two vertical posts and a horizontal bar, which are detachably connectable to one another to form a preferably H-shaped (possibly also U-shaped or O-shaped) vertical frame. For each vertical post, the vertical frame system comprises a locking element designed to lock the detachable connection.

[0011] These elements are familiar to those skilled in the art of scaffolding. For example, a vertical frame is often constructed from two vertical posts and two horizontal bars that are welded together. According to the invention, the vertical posts and the horizontal bar are not welded together, but are detachably connected. This allows them to be stored in a space-saving manner when disassembled. The locking mechanism ensures sufficient stability when connected. Although the components can certainly be made of plastic or wood, metal is the preferred material due to its very high strength. The vertical posts and the horizontal bar are preferably designed as (hollow) tubes, with the vertical posts preferably having a round cross-section and the horizontal bar preferably having a square cross-section.

[0012] The components of the vertical frame system are specially designed to ensure easy assembly while maintaining high strength of the vertical frame system.

[0013] The horizontal ledger has a bracket at each end for holding a vertical upright. Each of these brackets includes a vertical groove and is shaped so that a vertical upright can be inserted laterally into the groove and held there with a positive fit. According to the position specifications, "inserted laterally" means that a vertically aligned upright can be inserted into a groove with a horizontal movement. The grooves must therefore be aligned according to the vertical uprights.

[0014] For example, a bracket can have a U-shaped profile, with the interior of the U-profile running vertically, i.e. the U lies on its side.

[0015] The brackets are aligned so that the vertical posts can be inserted into the receiving grooves from different, particularly opposite, sides. This means that to arrange the vertical posts on the horizontal beam, one vertical post is moved in one horizontal direction and the other vertical post in another, particularly opposite, horizontal direction. For example, in a horizontal beam with two U-profiles as brackets, one U-profile can be open on one side of the longitudinal axis of the horizontal beam, and the other U-profile can be open on the opposite side.

[0016] The horizontal beam preferably has a U-shape or H-shape. This means that the brackets are elongated, at least longer than the height of a horizontal beam of the horizontal beam located between the brackets. A horizontally aligned horizontal beam and vertically aligned elongated brackets result in an H-shape or a U-shape in this preferred embodiment.

[0017] The horizontal bar can be made in one piece or consist of several joined (e.g. welded) individual parts.

[0018] Each of the two vertical uprights has a bulge in its middle section that runs at least partially around it and serves as a blocking element. This blocking element is designed to prevent the horizontal ledger from slipping downwards along the vertical upright. When correctly assembled, the horizontal ledger rests on the blocking element. Since the vertical uprights are inserted laterally into the horizontal ledger, the ledger can sometimes slide along the vertical uprights. Since gravity acts on an erected scaffold, only downward slipping needs to be prevented. This is achieved by the blocking element. The bulge protrudes laterally from the outer surface.

[0019] Each of the locking elements is designed to lock a vertical post in the receiving groove so that, when properly assembled, the horizontal bar rests on the bead and the vertical posts are held in the holders. Since both vertical posts must be securely held, at least one locking element serves to lock one holder and another locking element to lock the other holder. A simple locking element is a bar that can be moved into a position that blocks the opening through which a vertical post can be inserted into the receiving groove. However, a locking element can also fix the vertical post in the receiving groove in another way, as described below.

[0020] A system scaffold according to the invention comprises a number, in particular a plurality, of vertical frame systems according to the invention. A system scaffold in which conventional scaffold elements are combined with the special vertical frame systems is particularly preferred. If vertical frames other than H-shaped ones are to be combined with the vertical frames according to the invention, adapter elements can be used to compensate for height differences.

[0021] A method according to the invention for erecting a system scaffold with a vertical frame system according to the invention comprises the following steps: Attaching the two vertical uprights with one end to a vertical upright of a scaffolding base or to the upright of an already assembled vertical frame, so that the two vertical uprights are next to each other in a vertical, parallel arrangement with a substantially horizontal joint plane, the end faces of which form the end face of a scaffolding compartment, arranging the horizontal bar between the two vertical uprights by laterally inserting the vertical uprights into the receiving grooves of the holders, in particular by rotating the horizontal bar about the vertical, so that the blocking elements of the vertical uprights are below the horizontal bar, locking the vertical uprights in the holders, at least in such a way that they cannot move laterally out of the holders (and preferably cannot tip over either).

[0022] The way in which vertical standards are attached to a vertical stile is state of the art. Typically, the ends of the standards are shaped like the ends of conventional vertical frames, so that a tenon is formed on one end that can precisely engage with an opening on the opposite end. The vertical standards can be attached to a scaffold base or to the stile of an already assembled vertical frame (which can also refer to an already assembled vertical frame system). The newly attached vertical frame system should again form an H-shape, i.e. the two vertical standards should be arranged vertically and parallel with their ends essentially being horizontal. This happens automatically when they are attached to scaffolding components that have already been properly assembled.

[0023] The vertical posts can be inserted laterally into the receiving grooves of a horizontal ledger bracket, for example, by rotating a horizontal ledger with opposite openings in the receiving grooves (one on the right, the other on the left) around the vertical axis and bringing them into contact with the vertical posts. The locking elements of the vertical posts should be located below the horizontal ledger to prevent the horizontal ledger from slipping downward. It should be noted that decking components are usually placed on the horizontal ledgers, and diagonal braces are often anchored to the horizontal ledgers.

[0024] To achieve the necessary stability, the vertical posts are locked into the brackets last. They must then no longer be able to slide out of the brackets sideways. It may still be possible to move the horizontal bar along the longitudinal axis of the vertical posts, but the locking element prevents downward slippage.

[0025] If you want to have a leading railing when erecting the scaffold, you should connect the vertical standard to at least one railing post, in particular a railing post and an intermediate post, before inserting the vertical standard into the existing scaffolding system. The other end of the railing post is already connected to the scaffolding system, in particular to an adjacent vertical frame (a higher scaffolding level). The vertical standard is then inserted onto a vertical post of the scaffolding base or the post of a vertical frame. The railing is moved upwards in the process. Due to the H-shape of the vertical frame system, the attachment points for the railing are above the fastening element (and thus above the horizontal ledger that will be attached later), i.e. in the upper half of the vertical standard.However, this upper half forms part of the wall of the scaffolding level above, namely the part where the railing of this scaffolding level is located. When the vertical post is attached to the existing scaffolding, the attached railing (preferably the railing upright and intermediate upright) is moved upwards and then forms the railing of a scaffolding compartment of the scaffolding level above.

[0026] Further, particularly preferred embodiments of the invention will become apparent from the following description, wherein in particular individual features of different embodiments or variants can be combined to form new embodiments or variants.

[0027] According to a preferred vertical frame system, at least one of the vertical posts has, above the bead, particularly in its upper half, at least one fastening element for attaching a railing post to the vertical post. These are preferably fastening elements for a railing post and an intermediate post. Such fastening elements are well known in the art. However, unlike a conventional, rectangular vertical frame, which has the fastening elements in the lower half, here they are located in the upper half. If one looks at the actual scaffolding bay during assembly, the fastening elements of this vertical frame system are located in the scaffolding bay above and thus hold the railing of this scaffolding bay above. This structure of the vertical frame system is therefore ideal for producing a forward-running railing.Preferably, a fastening element has a locking mechanism for locking a rail for a railing. This locking mechanism is also known in the prior art.

[0028] According to a preferred vertical frame system, the brackets are aligned so that the vertical posts can be inserted into the receiving grooves from opposite sides, orthogonal to the longitudinal axis of the horizontal ledger. This means that one bracket is open to the right and the other to the left (relative to the longitudinal axis of the horizontal ledger). Vertical posts already attached to a scaffold can therefore be inserted into the receiving grooves by rotating the horizontal ledger about a vertical axis.

[0029] The mounting grooves in the brackets are preferably designed to have a U-shape. "U-shape" here and elsewhere in the description refers to a rounded U as well as a square U (i.e., a cuboid with one open side).

[0030] According to a preferred vertical frame system, the bead is no more than 30 mm thick, preferably no more than 15 mm. Otherwise, it would be noticeable and disruptive in the finished scaffold. However, it is preferred that the bead be thicker than 5 mm, especially thicker than 10 mm, so that it can optimally fulfill its function as a blocking element. The bead preferably has a horizontally flat blocking surface that contacts the horizontal ledger when properly attached. The horizontal ledger can rest firmly on this flat blocking surface and will not slip.

[0031] It is preferred that the blocking element be formed from a metal ring or band that extends at least partially around the vertical post. In principle, a blocking element only needs to be partially present, and not in one piece. For example, individual bulges or a protruding bolt may suffice as a bead. However, a blocking element that extends around at least a quarter, in particular at least half, of the circumference can absorb forces better than individual bulges.

[0032] According to a preferred vertical frame system, the holders of the horizontal bar each have a locking element which is designed such that, in an open position, a vertical post can be pushed in and out of the holder laterally, and in a locked position, a vertical post is locked at least against horizontal movement. The receiving groove of the holder is preferably designed such that, in the locked state, the vertical post fits precisely in the receiving groove. This means that the vertical post can essentially not tilt relative to the horizontal bar, at least not more than 5°, preferably less than 1°. It is particularly preferred if, in the locked state, the vertical post has no lateral play relative to the horizontal bar, so that tilting is no longer possible.

[0033] According to the invention, one of the vertical posts has a locking piece that protrudes laterally from its outer surface. At least one of the holders has an enclosed opening in one of its walls through which the locking piece can be pushed. This opening is preferably located in the middle of a U-shaped wall. A component (the locking piece) is therefore connected to the vertical post, which protrudes horizontally from it and fits through the opening in the holder. The opening should not be much larger than the (particularly round or square) cross-section of the locking piece so that it can be easily pushed through but does not have excessive play. An opening is preferably smaller than 110% of the dimensions of the locking piece. The locking piece can then be locked by means of a bolt, so that the vertical post can no longer slip out of the holder.With this type of locking mechanism, vertical sliding of the horizontal bar is also no longer possible, so the position of the bracket and blocking element, or the position of the opening, should be selected appropriately so that the horizontal bar rests on the blocking element when locked. The locking piece itself can also be considered a bead or blocking element, as it prevents the H-connector from sliding downward along the vertical post.

[0034] In the first alternative of the invention, the locking piece has a hole, in particular a vertical hole, and is dimensioned and positioned such that, when the vertical post is properly mounted in the holder, the locking piece protrudes through the opening and the vertical post can be locked in the holder by means of a bolt pushed through the hole. The bolt is in particular wedge-shaped or conical so that it can additionally exert a force-locking effect.

[0035] In the second alternative of the invention, the end facing away from the vertical post thickens at a fixed distance from the vertical post. It therefore essentially protrudes from the vertical post in a T- or mushroom-shaped (round or square) manner. The length of the thinner region (i.e. the aforementioned distance) preferably corresponds to the wall thickness of a holder for the horizontal bar. The locking piece is preferably mirror-symmetrical or a solid of revolution, and the thinner region is preferably cylindrical or prism-shaped with parallel walls. The thickened end of the locking piece preferably has the same cross-sectional shape as the thinner part, preferably the shape of a prism, cylinder, or hemisphere. Preferably, one locking piece is located on each opposite side of the vertical post.This allows for simple manufacturing, in which a through hole is drilled through the center of the vertical post in its wall, a bolt is pushed through this hole and fixed, and the bolt is provided with a thickening at both ends.

[0036] In this embodiment, at least one of the horizontal bar holders has an enclosed opening in one of its walls through which the locking piece can be pushed. This opening is shaped in the lower area so that the thickened end of the locking piece can be pushed through, and in the upper area so that the thin section of the locking piece fits through but not the thickened end. This has the advantage that the horizontal bar is simply placed slightly higher when attached to the vertical post, so that the locking piece can be pushed through the larger part of the opening. Once the horizontal bar is lowered onto the blocking element, the locking piece can no longer slip back (since the thickened end does not fit through the smaller part of the opening), and the horizontal bar is thus fixed to the vertical post by the thicker end of the locking piece.Here, too, the smaller part of the opening should not be much larger than the cross-section of the corresponding part of the locking piece, so that the latter is guided but cannot slip back and forth (i.e., does not have excessive play). An opening is preferably smaller than 110% of the dimensions of the corresponding part of the locking piece. Essentially, no bolt is required here, but one may be present for additional security.

[0037] According to a preferred vertical frame system, each vertical post is shaped at its ends such that one end can be inserted longitudinally into the opposite end of an identical vertical post and is held there in a form-fitting manner, preferably with a pin at one end being inserted into a hole at the other end. This allows different vertical frame systems to be stacked on top of one another to form multiple scaffolding levels.

[0038] The advantage of the vertical frame system is that it can essentially be disassembled into rod-shaped elements (vertical posts and horizontal bars), whose storage requires only a fraction of the space of conventional vertical frames. Furthermore, a forward-extending railing can be easily installed. A further advantage is that existing scaffolding elements can still be used and, in particular, can be combined with the vertical frame systems according to the invention. The vertical frame systems should have dimensions that correspond to those of conventional scaffolding elements.

[0039] The invention is explained in more detail below with reference to the accompanying figures using exemplary embodiments. In the various figures, identical components are provided with identical reference numerals. The figures are generally not to scale. They show: Figure 1a state-of-the-art system scaffold with rectangular frames, Figure 2 a perspective view of the vertical posts and the horizontal bar according to a preferred embodiment of the vertical frame system according to the invention, Figure 3 another example of a holder with a locking mechanism, which, however, does not form part of the invention, Figure 4 another example of a bracket with a preferred locking mechanism, Figure 5 an example of a system scaffold according to the invention, in construction with a leading railing, Figure 6 an example of a method according to the invention for constructing a leading railing, Figure 7 Combination options of a vertical frame system with conventional frames, Figure 8 a lock with a special locking piece.

[0040] Figure 1shows a state-of-the-art scaffolding system 1 with rectangular frames 13. The scaffold 1 stands on base plates 8, which are adjustable using scaffold spindles 9. This compensates for unevenness in the floor and ensures that the scaffold system 1 stands level. The lower frames 13 are stabilized by longitudinal bars 12.

[0041] The system scaffold 1 shown here has two scaffold levels, the upper of which is still under construction. Scaffold bays F are not yet secured by railings 5 and 6. However, the middle scaffold section (middle column) is already stabilized by diagonal braces 11. It should be noted that the upper diagonal brace 11 was installed without adequate protection by a railing 5 and 6. The three completed scaffold bays F can be accessed using decking elements 7 and are secured by railing stiles 5, intermediate stiles 6, and a front railing 10.

[0042] Figure 2shows a perspective view of the vertical posts 3 and the horizontal bar 4 according to a preferred embodiment of the vertical frame system 2 according to the invention. Two vertical posts 3 and a horizontal bar 4 are shown, which can be detachably connected to one another to form an H-shaped vertical frame (see right-hand illustration).

[0043] The horizontal bar 4 has a bracket 4a at each of its front ends for holding a vertical post 3. Each of the brackets 4a has a vertical receiving groove A and is shaped such that a vertical post 3 can be inserted laterally into the receiving groove A and held there in a form-fitting manner. In this example, this is achieved by aligning the brackets 4a such that the vertical posts 3 can be inserted into the receiving grooves A from opposite sides, orthogonal to the longitudinal axis of the horizontal bar 4. The receiving grooves A are designed here such that they have a (square) U-shape.

[0044] Each vertical post 3 has a circumferential bead 3a in its central region as a blocking element 3a. This blocking element 3a is preferably thicker than 5 mm but thinner than 30 mm and is designed to prevent the horizontal bar 4 from slipping downward along the vertical post 3.

[0045] The locking elements 3b, R are specially designed to lock the vertical posts 3 in the receiving groove A, so that the horizontal bar 4 rests on the bead 3a and the vertical posts 3 are held in the holders 4a. For this purpose, the vertical posts 3 have a locking piece 3b that protrudes laterally from their outer surface. The holders 4a have an enclosed opening L in the center of their U-shaped wall through which the locking piece 3b can be pushed. The locking piece 3b has a hole that is dimensioned and positioned such that when the locking piece 3b protrudes through the opening L, a wedge-shaped bar R can be pushed through the hole and locks the vertical post 3 in the holder 4a. The locking piece 3b can theoretically also be considered a bead 3a and thus serve as a blocking element 3a. In this illustration, however, it primarily serves as a locking element.

[0046] Figure 3 shows another example of a bracket 4a with a locking device R. There, the locking device R can be placed across the open side of the bracket 4a and held in (not visible) grooves to prevent the vertical post from slipping out.

[0047] Figure 4 shows another example of a holder 4a with a preferred locking 3b, R. This corresponds to the one shown in Figure 2 shown locking mechanism 3b, R, which is secured here by a bracket and the wedge-shaped bolt R is held in a recess so that it cannot slip out when unlocked.

[0048] Figure 5 shows an example of a system scaffold 1 according to the invention, in the construction with leading railing 5, 6. On a scaffold base G made of half-height frames, the H-shaped vertical frame systems are Figure 2 This system framework 1 is similar to that of the Figure 1with the difference that the vertical frame systems 2 do not extend as high, but end halfway up the height of a scaffold level. This allows for assembly with a leading railing 5, 6. As shown here on the right, the last scaffold bay F is currently being completed by assembling the last vertical frame system 2 together with the railing 5, 6.

[0049] Figure 6 shows an example of a method according to the invention for constructing a leading railing 5, 6, as shown in the Figure 5 On the far left is the side view of the condition that is shown in the Figure 5Now the vertical post 3 with the railing spar 5 and the intermediate spar 6 is lifted in the direction of the arrow. Held at a distance by the attached railing 5, 6, the vertical post 3 is now above the tenon Z of the underlying vertical post 3 and can be placed on it as shown by the arrow. Now the second, here hidden, vertical post 3 is also placed. At the height of the upper decking part 7 (indicated by dashed lines), the horizontal bar 4 is attached as shown in the Figure 2 has already been described. This completes a scaffolding level with a leading railing 5, 6, and the scaffolding can be safely erected upwards from the topmost scaffolding level.

[0050] Figure 7shows possible combinations of a vertical frame system 2 with conventional assembly frames 13. On the far left in column A, the use of conventional, O-shaped assembly frames 13 is shown, two of which are placed one above the other. Column B shows that the same structure can also be achieved with a vertical frame system 2 according to the invention and two half-height adapter pieces 14. As shown in columns C and D, a combination of a conventional assembly frame 13 and a vertical frame system 2 according to the invention using a half-height adapter piece 14 is also possible, namely both an assembly of a vertical frame system 2 according to the invention on a conventional assembly frame 13 (see C) and vice versa (see D). In this case, it should be noted that the clear height of a scaffold compartment should not be blocked by stiles in order to ensure problem-free passage through a scaffold level.Therefore, there are two types of adapter pieces 14, one is U-shaped with the crossbar downwards and one is inverted U-shaped with the crossbar upwards.

[0051] Figure 8shows a perspective view of a special locking device with a mushroom-shaped locking piece 3b. The left-hand illustration shows a vertical post 3 from whose outer surface two opposing locking pieces protrude laterally. In an enlarged view (dashed ellipse), the locking piece 3b is shown again in a sectional drawing. It is essentially a cylindrical bolt that is pushed through the vertical post 3, fixed in place, and provided with cylindrical thickenings at its ends. Each locking piece 3b therefore essentially protrudes from the vertical post in a mushroom shape. The length of the thinner section here corresponds approximately to the wall thickness of the holder 4a of the horizontal bar 4. The holder 4a shown has an opening L in the shape of an inverted keyhole.In its lower area, the opening L is shaped so that the thickened end of the locking piece 3b can be pushed through and in its upper area so that the thin area of the locking piece 3b fits through but not the thickened end.

[0052] To the right, the attachment of such a horizontal bar 4 to the vertical post 3 is shown in several stages from left to right. The bracket 4a is pushed onto the vertical post 3 so that the thickened end of the locking piece 3b can be pushed through the lower part of the opening L (arrow in the left illustration). After lowering (arrow in the middle illustration) the horizontal bar 4 onto the blocking element 3a, the locking piece 3b is fixed against lateral slipping by the wall of the bracket 4a, and the horizontal bar 4 is locked to the vertical post 3.

[0053] Finally, it should be noted once again that the figures are merely exemplary embodiments that can be modified in a variety of ways by those skilled in the art without departing from the scope of the invention. Furthermore, the use of the indefinite articles "a" or "an" does not exclude the possibility that the respective features may be present in multiple instances. The expression "a number" is to be understood as "at least one." List of reference symbols

[0054] 1 System scaffold 2 Vertical frame system 3 Vertical standard 3a Bead / blocking element 3b Locking piece 4 Horizontal ledger 4a Holding element 5 Guardrail 6 Intermediate beam 7 Decking part 8 Base plate 9 Base spindle 10 End rail 11 Diagonal brace 12 Longitudinal ledger 13 Assembly frame / vertical frame 14 Adapter frame A Mounting groove KKedge FG Scaffold bay GG Scaffold base L Opening R Ledger S Protection bar Z Pin

Claims

1. Vertical frame system (2) for a scaffolding system (1), comprising two vertical posts (3) and a horizontal ledger (4), which can be detachably connected to one another as intended to form an H-shaped vertical frame, and a locking element (3b, R) for each vertical post (3), designed to lock the detachable connection, wherein - the horizontal ledger (4) has a bracket (4a) at each of its end faces for holding a vertical post (3), each of the brackets (4a) comprising a vertical holding groove (A) and being shaped in such a way that in each case one of the vertical posts (3) can be pushed laterally into the holding groove (A) and is held there form-fit, wherein the brackets (4a) are aligned in such a way that the vertical posts (3) can be pushed into the holding grooves (A) from different sides, - each vertical post (3) has in its centre area an at least partially circumferential bulge (3a) as a blocking element (3a), which is designed in such a way that it blocks the horizontal ledger (4) from slipping downwards along the vertical post (3), - each locking element (3b, R) is designed to lock a vertical post (3) in the holding groove (A), so that in the intended assembled state the horizontal ledger (4) rests on the bulge (3a) and the vertical posts (3) are held in the brackets (4a), characterized in that one of the vertical posts (3) has a locking piece (3b) which projects laterally from its lateral surface and one of the brackets (4a) has an enclosed opening (L) in one of its walls, through which the locking piece (3b) can be pushed, and wherein - the locking piece (3b) has a hole and is dimensioned and positioned such that, in an intended mounting position of the vertical post (3) in the bracket (4a), the locking piece (3b) protrudes through the opening (L) and the vertical post (3) can be locked in the bracket (4a) by means of a ledger (R) pushed through the hole, or - the locking piece (3b) thickens at its end at a distance from the vertical post (3) and the brackets (4a) have an enclosed opening (L) in one of their walls, which opening is shaped in the lower region so that the thickened end of the locking piece (3b) can be pushed through and is shaped in the upper region so that the thin region of the locking piece (3b) fits through but not the thickened end.

2. Vertical frame system according to claim 1, characterized in that at least one of the vertical posts (3) above the bulge (3a), in particular in its upper half, has at least one fastening element for attaching a rail (5, 6) for a guardrail to the vertical post (3), preferably fastening elements for a guardrail (5) and an intermediate rail (6), wherein a fastening element preferably has a locking device for locking a rail (5, 6) for a railing.

3. Vertical frame system according to one of the preceding claims, characterized in that the brackets (4a) are aligned in such a way that the vertical posts (3) can be inserted into the holding grooves (A) from opposite sides orthogonally to the longitudinal axis of the horizontal ledger (4), the holding grooves (A) in the brackets (4a) preferably being designed in such a way that they have a U-shape.

4. Vertical frame system according to one of the preceding claims, characterized in that the bulge (3a) is not more than 30 mm thick, preferably not more than 15 mm and / or thicker than 5 mm, the bulge (3a) preferably having a horizontally flat blocking surface which contacts the horizontal ledger (4) when the latter is attached as intended, preferably wherein the blocking element (3a) is formed from a ring or strip of metal which extends at least partially around the vertical post (3).

5. Vertical frame system according to one of the preceding claims, characterized in that the brackets (4a) of the horizontal ledger (4) each have one of the locking elements (3b, R), which is designed in such a way that in an open position a vertical post (3) can be pushed laterally into and out of the bracket (4a) and in a locking position a vertical post (3) is locked at least against horizontal movements, wherein the holding groove (A) of the bracket (4a) is preferably designed such that, in the locked state, the vertical post (3) lies precisely in the holding groove (A).

6. Vertical frame system according to one of the preceding claims, characterized in that - the locking piece (3b) has a vertical hole and is dimensioned and positioned such that, in an intended mounting position of the vertical post (3) in the bracket (4a), the locking piece (3b) protrudes through the opening (L) and the vertical post (3) can be locked in the bracket (4a) by means of a wedge-shaped or conical ledger (R) pushed through the hole, or - the locking piece (3b) protrudes from the vertical post in a T or mushroom shape.

7. Vertical frame system according to one of the preceding claims, characterized in that each vertical post (3) is shaped at its end faces in such a way that one end face could be pushed longitudinally into the opposite end face of an identical vertical post and held there in a form-fitting manner, preferably with a pin (Z) at one end face being pushed into a hole at the other end face.

8. Method for assembling a scaffolding system (1) with a vertical frame system (2) according to one of the preceding claims, the method comprising the steps of: - attaching the two vertical posts (3) with one end face to a vertical rail of a scaffold base (G) or to the rail of an already assembled vertical frame (2, 13), so that the two vertical posts (3) are arranged next to each other in a vertical, parallel arrangement with a substantially horizontal joint plane whose end faces form the end face of a scaffold compartment, - arranging the horizontal ledger (4) between the two vertical posts (3) by pushing the vertical posts (3) laterally into the holding grooves (A) of the brackets (4a), in particular by rotating the horizontal ledger (4) about the vertical, so that the blocking elements (3a) of the vertical posts (3) lie under the horizontal ledger (4), - locking the vertical posts (3) in the brackets (4a), at least so that they cannot move sideways out of the brackets (4a).

9. Method according to claim 8, characterized in that, before a vertical post (3) is attached to the existing scaffolding system (1), this vertical post (3) is connected to at least one rail for a guardrail (5, 6), in particular a guardrail (5) and an intermediate rail (6), which is already connected at the other end to the scaffolding system (1), in particular to an adjacent vertical frame (2, 13), and then the vertical post (3) is attached to a vertical rail of the scaffold base (G) or the rail of a vertical frame (2, 13).

10. Scaffolding system (1) comprising a number of vertical frame systems (2) according to any one of claims 1 to 7.

Images