Connector part

Abstract

The invention relates to a connector part (17) comprising a connecting element (19a, 19b) for connection to a post (1, 1a-h), wherein the post (1, 1a-h) has an elongated post element (2) and an outwardly extending projection (4) having at least a first (6a) and a second retaining opening (6b), wherein the connecting element (19a, 19b) has two retaining bolts (8a, 8b) which are orientated in opposite directions, wherein a first retaining bolt (8a) can be inserted into the at least one first retaining opening (6a) and a second retaining bolt (8b) can be inserted into the at least one second retaining opening (6b), or the connecting element (19a, 19b) has at least two retaining bolts (8a, 8b), wherein a first retaining bolt (8a) and a second retaining bolt (8b) can each be inserted into both a first (6a) and a second retaining opening (6b), wherein the first (8a) and the second retaining bolt (8b) are oriented in the same direction. The invention also relates to a shoring system combination (16) and to a method for assembling a shoring frame (32).

Description

[0001] Connection part

[0002] The invention relates to a connecting part according to the preamble of claim 1.

[0003] Furthermore, the invention relates to a scaffolding component combination comprising such a connecting part and a post. Furthermore, the invention relates to a method for constructing a scaffolding frame, in particular a scaffolding tower.

[0004] Standards of the type described above are used, among other things, in formwork or shoring frames or shoring towers to support heavy loads, such as structural components. A prerequisite for such standards is therefore that they can withstand high forces without deforming. To increase the stability of a formwork or shoring frame, the standards used can usually be connected to one another using horizontally arranged connectors.

[0005] From DE 10 2021 211 507 A1, n-sided standards for formwork or shoring frames are known that can be connected via connecting parts. However, it has been shown with this type of standard that when high forces are applied via the connecting parts, deformation of the standards can occur, usually in the form of bulging, which in turn reduces the stability of the standards and thus of the formwork or shoring frames in which they are used.

[0006] Poles with holding openings for connecting parts for lateral connection with other poles are also made of

[0007] WO 01 / 83913 A1, US 5,320,440 A and NL 2004576 C2. Stems with bulges are also known from US 2015 / 0315787 A1, DE 844 055 CI and EP 0 049 096 A1.

[0008] In light of these statements, it is an object of the present invention to eliminate the disadvantages of the prior art. Preferably, the object of the present invention is to increase the stability of a post of the type mentioned above when subjected to force and torque effects via connected connecting parts, in particular horizontal bars.

[0009] This object is achieved by a post according to claim 1, a formwork support according to claim 9, a scaffolding part combination according to claim 10, a scaffolding frame according to claim 14 and a method for constructing a scaffolding frame according to claim 15.

[0010] According to the invention, in a connecting part of the type mentioned at the outset, the connecting element has at least two retaining bolts arranged one above the other, preferably aligned essentially parallel,

[0011] - wherein the retaining bolts are oriented in opposite directions and a first retaining bolt can be inserted into the at least one first retaining opening and a second retaining bolt can be inserted into the at least one second retaining opening, or

[0012] - wherein the retaining bolts are oriented in the same direction and a first retaining bolt and a second retaining bolt can each be inserted into a first retaining opening as well as into a second retaining opening.

[0013] The connecting part is explained below in combination with a handle, although the invention is not limited to this combination.

[0014] . It is preferred if at least one retaining bolt of the connecting part can be inserted into both the first and the second retaining opening, so that the retaining bolt penetrates the at least one bulge. It is particularly preferred if the connecting part can be brought into a connected state with the handle, in which the at least one retaining bolt of the connecting part is inserted into both the first retaining opening and the second retaining opening at the same time. If the connecting part has a plurality of retaining bolts, in particular parallel and in particular oriented in the same direction, each retaining bolt can preferably be inserted in the connected state simultaneously into a first retaining opening and into a second retaining opening located opposite the bulge of the first retaining opening.Alternatively, it can be provided, for example, that the connecting part has a first retaining bolt and a second retaining bolt which are oriented in opposite directions, wherein the first retaining bolt can be inserted into the first retaining opening and the second retaining bolt into the second retaining opening. It is preferably provided that, when the connecting part is connected to the stem, the first retaining bolt and the second retaining bolt are inserted simultaneously into the first and second retaining openings, respectively. In a further embodiment, it can be provided that, when the connecting part is connected, the first retaining bolt and the second retaining bolt oriented in the opposite direction are each inserted, preferably simultaneously, both into a first retaining opening and into a second retaining opening located opposite the bulge of the first retaining opening.The at least one bulge extending outwards, i.e. radially away from an interior of the stem element, increases the stability of the stem, in particular with regard to the effect of forces and torques which are introduced into the stem via connected connecting parts. As a result, deformations occur less frequently or only at higher forces and torques than is the case with the prior art. This essential advantage is based on the effect that loads by the connecting part in the stem according to the invention are introduced at least partly in the direction of the main extension planes or wall planes of the at least one bulge. The at least one bulge thus increases the stability in the region of connected connecting parts. In particular if the at least one bulge has side surfaces, the load is transferred via the side surfaces.In contrast, according to DE 10 2021 211 507 A1, the stem is loaded by the connecting part perpendicular to the wall plane of the stem, which creates the risk of bulging. The introduced forces and torques are dissipated into the basic cross-sectional structure via the at least one bulge. The stem is preferably made of steel. The yield strength of the steel is preferably in the range between 235 N / mm. 2 and 960 N / mm 2 , especially between 235 N / mm 2 and 600 N / mm 2. The stem element can be formed in one piece, for example by forming a blank . In particular, the basic cross-sectional contour and the at least one bulge can be formed in one piece . If a plurality of bulges are provided, these can in particular be designed in the same way . The stem element preferably has a length of at least 50 cm, preferably of at least 100 cm or of at least 150 cm . The stem element preferably has a diameter (calculated as the length of an imaginary line between two furthest apart points of the cross section of the stem element) between 50 mm and 170 mm, in particular between 60 mm and 100 mm . The longitudinal axis of the stem element can coincide with an axis of symmetry of the stem element . The at least one bulge preferably extends away from the longitudinal axis of the stem element, i.e.the at least one bulge has an extension that is oriented at a preferably right angle to the longitudinal axis. The basic cross-sectional contour is, for example, substantially circular or polygonal or n-sided. The stem element preferably has a plurality of bulges along the circumference around the longitudinal axis of the stem element. If a plurality of bulges are provided, the basic cross-sectional contour extends between the bulges and connects them to one another. The at least one bulge protrudes, viewed in the cross-section of the stem element, at least 15 mm from the basic cross-sectional contour or, if the basic cross-sectional contour is interrupted by the at least one bulge, from an imaginary continuous basic cross-sectional contour.The first and second retaining openings on the at least one bulge, which can also form a pair of retaining openings, enable the fastening of a connecting part to the stem element in order to be able to connect several stem elements to one another, for example. The retaining openings of a pair of retaining openings are preferably arranged such that, when the connecting part is connected to the stem, they can be penetrated by a single retaining bolt of the connecting part. In one embodiment of the invention, the first and second retaining openings of a pair of retaining openings are arranged such that a retaining bolt of the connecting part can be inserted into both the first retaining opening and the second retaining opening, so that the retaining bolt penetrates the first and second retaining openings simultaneously when the connecting part is connected.In this way, the force acting on the retaining bolt is transmitted substantially evenly to the first and second retaining openings and introduced into the bulge. The first and second retaining openings are preferably located opposite one another in such a way that, in particular, a straight, i.e., unbent, retaining bolt can be inserted into the first and second retaining openings. The first and second retaining openings are preferably arranged symmetrically to one another on the at least one bulge. In the described embodiment, an imaginary straight connecting line can be drawn through the cross-sectional areas of the first and second retaining openings. The imaginary connecting line preferably runs through the geometric centers of the cross-sectional areas of the first and second retaining openings and is oriented, in particular, perpendicular to the cross-sectional areas.In other words, the axes of symmetry of the cross-sectional surfaces preferably lie on a common straight line. The first and second retaining openings of a retaining opening pair can, in one embodiment of the invention, be arranged parallel to one another. Alternatively, the first and second retaining openings of a retaining opening pair can be arranged inclined to one another by an angle. Said angle preferably runs around a vertical axis which is arranged parallel to the longitudinal axis and can, for example, be between 0° and 90° or between 0° and 60°. The first and second retaining openings are preferably identical. However, it is also possible for the first and second retaining openings to be differently designed in order to specify a preferred insertion direction for the retaining bolt. The shape of the first and second retaining openings can, for example, be oblong, circular, oval, elliptical or polygonal.The first and second holding openings can, for example, have a minimum width of at least 5 mm, at least 7 mm, or at least 10 mm. The first and second holding openings can, for example, have a minimum length of at least 10 mm, at least 15 mm, or at least 25 mm. The distance between the geometric centers of the first and second holding openings is preferably between 15 mm and 50 mm. In order to facilitate the connection of the connecting part to the stem element, at least one centering opening can be provided on the at least one bulge. The at least one centering opening can, for example, be arranged on an end face of the at least one bulge and be designed to receive a centering element, in particular a centering pin, of the connecting part. In an alternative embodiment, the centering opening can also serve to lock a connecting part to the stem element.The stem element can have a base plate and / or a head plate at a first and / or second end. Preferably, a plurality of first retaining openings are arranged one above the other on the at least one bulge. Similarly, a plurality of second retaining openings are preferably arranged one above the other on the at least one bulge. The first retaining openings are arranged opposite the second retaining openings on the bulge.

[0015] In the present disclosure, directional information refers to the intended use of the handle. The handle is preferably arranged substantially vertically, i.e., parallel to the force of gravity. The longitudinal axis of the handle element is thus preferably arranged vertically.

[0016] In order to be able to connect a connecting part at several positions along the stem element, it is advantageous if the at least one bulge has several first holding openings, preferably arranged one above the other, and / or several second holding openings, preferably arranged one above the other. The first holding openings can be arranged in a first row, in particular along a first straight line. The second holding openings can be arranged in a second row, in particular along a straight line. The first holding openings in the first row and / or the second holding openings in the second row can be regularly or irregularly spaced from one another. The distance between the first holding openings in the first row and the second holding openings in the second row can be, for example, between 50 mm and 500 mm, in particular between 100 mm and 250 mm.For example, at least two, at least three, at least six, at least eight or at least ten first holding openings and / or second holding openings may be provided on the at least one bulge.

[0017] In order to save material, one embodiment of the invention can provide for the at least one bulge to interrupt the basic cross-sectional contour of the stem element, the basic cross-sectional contour preferably being circular or n-sided. If a plurality of bulges are provided, these can each interrupt the basic cross-sectional contour. Viewed in cross-section, there is therefore no basic cross-sectional contour in the area of ​​the at least one bulge. In this embodiment, the basic cross-sectional contour connects the ends of the bulge or bulges to one another. If the basic cross-sectional contour is circular, for example, the ends of the bulge or bulges are connected by circular arc segments when viewed in cross-section of the stem element. If the basic cross-sectional contour is n-sided, for example, the ends of the bulge or bulges are connected by circular arc segments.The bulges are connected by one or more adjacent straight line segments when viewed in the cross-section of the stem element. The interrupted basic cross-sectional contour merges into at least one bulge that interrupts the basic cross-sectional contour.

[0018] In order to be able to connect the stem element to a plurality of other stem elements, it is advantageous if the stem element has a plurality of bulges, preferably arranged along a circumference around the longitudinal axis of the stem element. The plurality of bulges can be arranged at regular or irregular distances from one another along the circumference of the stem element. The bulges can each be essentially identical or different. For example, two, three, four, five, six, seven or eight bulges can be arranged along the circumference of the stem element. It is particularly preferred if four bulges are provided, offset from one another by essentially 90° around the longitudinal axis.

[0019] In one embodiment of the invention, it is provided that the at least one bulge has a substantially rectangular, triangular or partially elliptical, in particular substantially semicircular, cross-sectional area. These cross-sectional areas have proven to be particularly stable against deformation. The cross-sectional area refers to the entire bulge. The at least one bulge can also comprise a cavity in its interior, which is added to the cross-sectional area of ​​the at least one bulge. It is particularly preferred if the cross-sectional area of ​​the bulge is rectangular, for example substantially square. It is advantageous if the at least one bulge extends at least over half of the stem element, preferably at least over two-thirds of the stem element, in particular substantially over the entire length of the stem element.This further increases the stability of the stem element. Furthermore, the number of connection positions of the connecting part to the stem element can be increased, particularly if the at least one bulge has a plurality of first and second retaining openings.

[0020] A particularly simple connection option for the connecting part is obtained if the first and the second holding opening form a holding opening pair and are arranged at substantially the same height on the bulge. The height refers to the longitudinal axis of the stem element. Alternatively, the first and the second holding opening can be arranged at different height positions on the at least one bulge. It is preferred if several holding opening pairs are provided, each with a first and a second holding opening. It is advantageous if several holding opening pairs are arranged one above the other.

[0021] In one embodiment of the invention it is provided that the at least one bulge has at least a first and a second side surface, wherein the first holding opening is arranged on the first side surface and the second holding opening is arranged on the second side surface. In one embodiment of the invention the first and the second side surfaces can be arranged parallel to one another. Alternatively the first and the second side surfaces can be inclined towards one another, wherein they enclose an angle with one another. The angle can be between 0° and 60°. The side surfaces can, for example, be rectangular. A particularly stable stem element results when the side surfaces merge into the basic cross-sectional contour. The first holding opening and the second holding opening can be arranged at the same height or at different heights on the bulge.Preferably, a plurality of first holding openings are provided on the first side surface and a plurality of second holding openings are provided on the second holding opening. In one embodiment of the invention, an element, in particular a truss element, is attached, in particular welded, to the post element. The element can be used to connect to a further post and can be formed, for example, by a triangular frame or a rectangular frame. For this purpose, the element can have at least one connecting element, as described further below in connection with the support scaffolding part combination. In one embodiment of the invention, the element can have at least one truss strut element, at the end of which facing away from the post the at least one connecting element can be arranged.To increase stability, the element may further comprise one or more horizontal truss struts, one or more inclined truss struts, and / or one or more vertical truss struts, which may also be directly or indirectly connected to the truss strut element. The element may, in particular, be designed as a truss element. A post with an attached element may also be referred to as a support scaffold module.

[0022] The object stated at the outset is also achieved by a formwork support according to claim 9, which has a post acting as an outer tube according to the type described above and an inner tube which is inserted into the post so that it can be pulled out or rotated out. If the inner tube is designed so that it can be pulled out from the post, it can be provided that the inner tube has at least one inner tube staking hole, in particular a plurality of inner tube staking holes arranged one above the other. In order to adjust the extension height of the inner tube from the outer tube, a staking bolt can be inserted into the at least one inner tube staking hole. The staking bolt can rest on an upper side of the outer tube or on a preferably rotatable sleeve arranged on the upper side, or can be pushed into an outer tube staking hole corresponding to the at least one inner tube staking hole.If the inner tube is designed so that it can be turned out from the stem, the outer tube can have a first thread, in particular an internal thread, and the inner tube can have a second thread, in particular an external thread, which engage with one another and enable the inner tube to be turned out of the outer tube. In order to adjust the turning height of the inner tube, the inner tube can also be fixed, for example, by means of a locking bolt. For this purpose, the inner tube can have at least one inner tube locking hole. The locking bolt can in turn rest on an upper side of the outer tube or on a preferably rotatable sleeve arranged on the upper side or can be inserted into an outer tube locking hole corresponding to the at least one inner tube locking hole. The outer tube can have a base plate at a lower end. The inner tube can have a head plate at an upper end opposite the lower end.The base plate and / or the head plate can be detachably connected to the outer tube or inner tube, respectively. The inner tube is preferably made of steel. The length of the inner tube is at least 90 cm, preferably at least 120 cm.

[0023] The formwork support can be used, for example, in a ceiling formwork. Therefore, a ceiling formwork with several formwork supports of the type described, which are connected to one another via connecting parts, in particular horizontal bars, is also disclosed.

[0024] The object stated at the outset is further achieved by a support scaffolding part combination which has the following: at least one post of the type described above; at least one connecting part, in particular a horizontal bar, which has at least one connecting element for connection to the post, which can be fastened to the first and to the second holding opening. It is preferred if the at least one connecting element has at least one holding bolt which can be inserted into both the first and the second holding opening of the at least one pair of holding openings, so that the holding bolt penetrates the at least one bulge. It is particularly preferred if the holding bolt can be inserted into the first and the second holding opening in such a way that the holding bolt penetrates the first and the second holding opening simultaneously when the connecting part is connected to the post.In this context, "simultaneous" does not refer to a simultaneous insertion process, but to a state in which the retaining bolt is inserted into the first and second retaining openings at the same time.

[0025] Such a combination of supporting scaffolding components can be assembled to form a supporting scaffolding frame and a supporting scaffolding tower. Supporting scaffolding towers can be used, for example, to support building components. The connecting part can comprise a strut element, preferably a tube or a rod, at the end of which the at least one connecting element is arranged. Preferably, the connecting part comprises two, in particular, similar connecting elements at opposite ends of the strut element. In a preferred embodiment, the at least one connecting element comprises

[0026] Embodiment at least one retaining bolt which can be inserted into both the first and the second retaining opening of the at least one pair of retaining openings, such that the retaining bolt penetrates the at least one bulge. In other words, when the connecting part is connected to the stem, the retaining bolt can be inserted into both the first and the second retaining opening, wherein the retaining bolt extends through the bulge. In this way, the acting load can be evenly distributed across both retaining openings. It is also possible to provide a plurality of identical retaining bolts which are, for example, oriented in the same direction and are inserted into both a first and a second retaining opening when the connecting part is connected to the stem, wherein the retaining bolts extend through the bulge.In an alternative embodiment, the connecting part on the connecting element has a first and a second retaining bolt, wherein, as described in more detail below, the first retaining bolt can be inserted into the first retaining opening and the second retaining bolt can be inserted into the second retaining opening. The retaining bolts can be arranged offset from one another along an extension axis of the connecting element and can preferably be oriented in an opposite direction to one another. Accordingly, the first and second retaining openings on the bulge can also be arranged offset from one another at different heights. In the connected state, the connecting part, in particular the strut element, preferably extends at an angle other than zero to the longitudinal axis of the stem element. It is particularly preferred if the connecting part, in particular the strut element, encloses an angle of at least 45° with the longitudinal axis of the stem element.Even more preferred is when the connecting part, in particular the strut element, is arranged substantially horizontally in the connected state and thus forms an angle of substantially 90° with the longitudinal axis of the stem element. The strut element preferably has a length of at least 25 cm, preferably at least 250 cm.

[0027] In one embodiment of the invention, the connecting element has at least two retaining bolts arranged one above the other, preferably aligned essentially parallel, wherein a first retaining bolt can be inserted into the first retaining opening and a second retaining bolt can be inserted into the second retaining opening. This prevents pivoting of the connecting part in a vertical direction when the connecting part is connected and creates a reliable connection between the connecting part and the stem element. The retaining bolts can be arranged offset parallel to one another and oriented in opposite directions. When the connecting part is connected, the first retaining bolt can only be inserted into the first retaining opening and the second retaining bolt can only be inserted into the second retaining opening.However, it can also be provided that the first retaining bolt is inserted into a first retaining opening as well as a second retaining opening when the connecting part is connected and penetrates the at least one bulge. In the same way, it can be provided that the second retaining bolt is inserted into a first retaining opening as well as a second retaining opening when the connecting part is connected and penetrates the at least one bulge. In this case, a plurality of first retaining openings arranged one above the other and a plurality of second retaining openings arranged one above the other are provided on the bulge. To facilitate insertion, the first and second retaining bolts can have tapered ends. The connecting part can be connected to the handle, for example, by a rotating movement.The rotational movement can enable the first retaining bolt to be inserted into a first retaining opening and, at the same time, the second retaining bolt to be inserted into a second retaining opening. To simplify the insertion of the retaining bolts, the connecting element / stem can have a centering pin that can be inserted into a centering opening in the stem / connecting element. In one embodiment, it is provided that the first retaining bolt is inserted only into a first retaining opening when the connecting part is connected, but not into a second retaining opening, and the second retaining bolt is inserted only into a second retaining opening when the connecting part is connected, but not into a first retaining opening.

[0028] In an alternative embodiment of the invention, it is provided that the handle has a plurality of first holding openings arranged one above the other and a plurality of second holding openings arranged one above the other on the bulge, and the connecting element has at least two holding bolts arranged one above the other, preferably aligned essentially parallel, wherein a first holding bolt and a second holding bolt can be inserted into both a first and a second holding opening. This prevents the connecting part from pivoting in a vertical direction when the connecting part is connected, and a reliable connection between the connecting part and the handle element is created. In this embodiment, it is preferably provided that the at least one bulge has more than two, preferably more than six, first holding openings and second holding openings which are arranged one above the other.Preferably, each first retaining opening on the bulge is opposite a second retaining opening at the same height. The first retaining bolt and the second retaining bolt are preferably arranged offset parallel to one another and oriented in the same direction. At least one pair of first and second retaining openings is provided below the first retaining openings and the second retaining openings, the spacing of which corresponds to the spacing of the retaining bolts of the connecting element. Preferably, the spacing between all first and second retaining openings essentially corresponds to the spacing of the first and second retaining bolts of the connecting element.In order to prevent unintentional detachment of the connecting part from the stem element, one embodiment of the invention can provide that the connecting element has a fixing element which is designed to enable connection of the connecting part to the stem and detachment of the connecting part from the stem in a release position and to block detachment of the connecting part from the stem in a fixing position. The fixing element can, for example, have a retaining clip. The fixing element is preferably arranged between two retaining bolts of the connecting element. In one embodiment of the invention, a spring element can be provided which presses the fixing element into the fixing position or into the release position. The fixing element is thus pretensioned into the fixing position or the release position.The fixing element can be moved into the release position or release position by applying a force against a spring force of the spring element. When the force is no longer applied, the fixing element is moved back into the fixing position by the spring element. An actuating sleeve is preferably provided, with which the fixing element can be moved between the release position and the fixing position. The fixing element can be moved between the release position and the fixing position by means of a slotted guide. The slotted guide is designed to translate a rotary movement of the actuating sleeve about the main extension axis of the strut element of the connecting part into a translatory movement of the fixing element. For this purpose, the slotted guide can have a slotted slot and a slotted pin guided therein. For example, the slotted pin can be arranged on the fixing element.The slot can be arranged, for example, on the actuating sleeve.

[0029] To secure the connecting part against detachment from the stem element, one embodiment of the invention can provide for the fixing element to at least partially encompass the at least one protrusion in the fixing position. If the at least one protrusion has a first and a second side surface, the fixing element can at least partially bear against the outside of each of these in the fixing position.

[0030] The object stated at the outset is also achieved by a support scaffold frame, in particular a support scaffold tower, according to claim 14. Such a support scaffold frame has at least one support scaffold part combination. The connecting part is connected to the post and preferably to a further post. It is preferred if the support scaffold frame has a plurality of support scaffold part combinations. Additionally or alternatively, the support scaffold frame can have one or more support scaffold modules. In the case of a support scaffold frame, it can also be provided that posts are connected to further, similar posts at the upper and / or lower ends in order to adapt the height of the support scaffold frame.

[0031] The object stated at the outset is also achieved by a method for constructing a scaffolding frame, in particular a scaffolding tower, according to claim 15, the method comprising the following steps:

[0032] Providing at least a first and a second stem according to one of claims 1 to 8;

[0033] Providing at least one connecting part, in particular a horizontal bar, which has a first connecting element at a first end and a second connecting element at an opposite second end;

[0034] Connecting the at least one connecting part to the first and the second stem, wherein the first connecting element is fastened to the first and the second holding opening of the first stem and the second connecting element is fastened to the first and the second holding opening of the second stem.

[0035] The advantages, features and effects described in connection with the post according to the invention, the support scaffolding part combination and the support scaffolding frame can be transferred to the method according to the invention for erecting a support scaffolding frame or a support scaffolding tower. In particular, a particularly stable support scaffolding frame or a support scaffolding tower can be erected using the method according to the invention. The support scaffolding tower can be used, for example, to support a building part. The first and the second post can be arranged vertically. The connecting part can preferably connect the first and the second post essentially horizontally to one another. It is particularly preferred if the at least one bulge of the first and the second post has a plurality of first and second holding openings arranged one above the other and the first and the second connecting element each have a first and a second holding bolt, as described above.The first and second retaining bolts of a connecting element are preferably offset parallel to one another. In one embodiment, the first and second retaining bolts can be oriented in the same direction and, when the connecting part is connected, can be inserted into both a first and a second retaining opening and penetrate at least one bulge of the connected stem. In another embodiment, the first and second retaining bolts can be oriented in opposite directions. In this embodiment, the first retaining bolt can be inserted into a first retaining opening and the second retaining bolt into a second retaining opening, in particular by a rotating movement of the connecting part. It is advantageous if, as explained above, the first and second connecting elements have a fixing element which is designed to connect the connecting part to the first or second retaining opening in a release position.second stem and to enable the connecting part to be released from the first or second stem and to block the connecting part from being released from the first or second stem in a fixing position.

[0036] In one embodiment of the invention, the following steps are provided:

[0037] Providing at least a first and a second stem, each according to the type described above;

[0038] Providing at least one connecting part, in particular a horizontal bar, which has a first connecting element with at least one retaining bolt at a first end and a second connecting element with at least one retaining bolt at an opposite second end;

[0039] Connecting the at least one connecting part to the first and the second stem, wherein the at least one retaining bolt of the first connecting element is inserted into the first and the second retaining opening of the at least one pair of retaining openings of the first stem, such that the at least one retaining bolt of the first connecting element penetrates the at least one bulge of the first stem, and the at least one retaining bolt of the second connecting element is inserted into the first and the second retaining opening of the at least one pair of retaining openings of the second stem, such that the at least one retaining bolt of the second connecting element penetrates the at least one bulge of the second stem.

[0040] The invention can also be described in general terms using the following embodiments:

[0041] Embodiment 1: Post, in particular scaffolding post or formwork support post, comprising: an elongated post element with a longitudinal axis and a cross-sectional basic contour; and at least one holding opening on the post element for a connecting part, in particular for a horizontal bar; wherein the post element has at least one outwardly extending bulge which has a first holding opening and a second holding opening, wherein the first and the second holding opening are arranged opposite one another on the bulge such that the connecting part can be fastened to both the first and the second holding opening, preferably simultaneously.

[0042] Embodiment 2: Handle according to embodiment 1, wherein the at least one bulge has a plurality of first holding openings preferably arranged one above the other and / or a plurality of second holding openings preferably arranged one above the other.

[0043] Embodiment 3: Handle according to embodiment 1 or 2, wherein the at least one bulge interrupts the basic cross-sectional contour of the handle element, wherein the basic cross-sectional contour is preferably circular or n-sided.

[0044] Embodiment 4: Handle according to one of the embodiments 1 to 3, wherein the at least one bulge has a substantially rectangular, triangular or partially elliptical, in particular substantially semicircular, cross-sectional area.

[0045] Embodiment 5: Handle according to one of the embodiments 1 to 4, wherein the at least one bulge extends at least over half of the handle element, preferably at least over two thirds of the handle element, in particular substantially over the entire length of the handle element.

[0046] Embodiment 6: Handle according to one of the embodiments 1 to 5, wherein the first and the second holding opening form a holding opening pair and are arranged at substantially the same height on the at least one bulge.

[0047] Embodiment 7: Handle according to one of the embodiments 1 to 6, wherein the at least one bulge has at least a first and a second side surface, wherein the first holding opening is arranged on the first side surface and the second holding opening is arranged on the second side surface.

[0048] Embodiment 8: Handle according to one of the embodiments 1 to 7, wherein a framework element, in particular a grid element, is attached, in particular welded, to the handle element.

[0049] Embodiment 9: Formwork support, comprising: a post acting as an outer tube according to one of embodiments 1 to 8; an inner tube which is inserted into the post in an extendable or rotatable manner.

[0050] Embodiment 10: Support scaffolding part combination, comprising: at least one post according to one of the embodiments 1 to 8; at least one connecting part, in particular a horizontal bar, which has at least one connecting element for connection to the post, which can preferably be fastened simultaneously to the first and to the second holding opening, preferably simultaneously.

[0051] Embodiment 11: Support scaffold part combination according to embodiment 10, wherein the connecting element has at least two retaining bolts arranged one above the other, preferably aligned substantially parallel, wherein a first retaining bolt can be inserted into the first retaining opening and a second retaining bolt can be inserted into the second retaining opening.

[0052] Embodiment 12: Support scaffold part combination according to embodiment 10, wherein the handle has a plurality of first holding openings arranged one above the other and a plurality of second holding openings arranged one above the other on the bulge and the connecting element has at least two holding bolts arranged one above the other, preferably aligned substantially parallel, wherein a first holding bolt and a second holding bolt can be inserted into both a first and a second holding opening.

[0053] Embodiment 13: Support scaffolding part combination according to one of the embodiments 10 to 12, wherein the connecting element has a fixing element which is designed to enable a connection of the connecting part to the post and a release of the connecting part from the post in a release position and to block a release of the connecting part from the post in a fixing position.

[0054] Embodiment 14: Support scaffold frame, in particular support scaffold tower, with at least one support scaffold part combination, wherein the support scaffold part combination is designed according to embodiments 10 to 13.

[0055] Embodiment 15: Method for erecting a scaffold frame, in particular a scaffold tower, comprising the steps of: providing at least one first and one second post, each according to one of claims 1 to 8;

[0056] Providing at least one connecting part, in particular a horizontal bar, which has a first connecting element at a first end and a second connecting element at an opposite second end;

[0057] Connecting the at least one connecting part to the first and the second stem, wherein the first connecting element is fastened to the first and the second holding opening of the first stem and the second connecting element is fastened to the first and the second holding opening of the second stem.

[0058] The invention is explained in more detail below with reference to figures, to which, however, it is not intended to be limited. They show:

[0059] Fig. 1 shows a stem in an oblique view;

[0060] Fig. 2 shows a section of the handle according to Fig. 1 in an enlarged view;

[0061] Fig. 3 shows a cross-section of the stem according to Fig. 1;

[0062] Fig. 4 shows a combination of supporting scaffolding parts with a first and a second post which are connected to one another via a connecting part;

[0063] Fig. 5 a connecting part;

[0064] Fig. 6A shows a connecting element of a connecting part in a release position according to a first embodiment;

[0065] Fig. 6B shows a connecting element of a connecting part in a blocking position according to the first embodiment;

[0066] Fig. 7A-C each show a longitudinal section through a connecting element according to the first embodiment;

[0067] Fig. 8A is an oblique view of a part of a stem with three connected connecting parts, comprising connecting elements according to the first embodiment;

[0068] Fig. 8B is a plan view of a portion of a stem with three connected connecting parts, comprising connecting elements according to the first embodiment;

[0069] Fig. 8C is a side view of a part of a stem with connected connecting parts, comprising connecting elements according to the first embodiment;

[0070] Fig. 9 a first support frame module;

[0071] Fig. 10 a second support frame module;

[0072] Fig. 11 a first scaffold frame or scaffold tower;

[0073] Fig. 12 a second scaffold frame or scaffold tower;

[0074] Fig. 13 a third scaffold frame or scaffold tower;

[0075] Fig. 14 different cross-sectional shapes of bulges;

[0076] Fig. 15 shows a connecting element according to a second embodiment;

[0077] Fig. 16A-C shows a connecting process of a connecting element according to the second embodiment with a stem element;

[0078] Fig. 17A is an oblique view of a part of a stem with three connected connecting parts, comprising connecting elements according to the second embodiment;

[0079] Fig. 17B is a plan view of a portion of a stem with three connected connecting parts, comprising connecting elements according to the second embodiment;

[0080] Fig. 17C is a side view of a part of a stem with connected connecting parts, comprising connecting elements according to the second embodiment;

[0081] Fig. 18 a support; and

[0082] Fig. 19 a fourth supporting scaffold tower.

[0083] Fig. 1 shows a post 1 which can be used as a scaffolding post or formwork post (see the formwork support in Fig. 18). The post 1 is preferably hollow and has an elongated post element 2 which extends along a longitudinal axis 3a. The longitudinal axis 3a coincides with an axis of symmetry 3b of the post element 2. Along the circumference U of the post element 2 around the longitudinal axis 3a, in the embodiment shown, a total of four regularly spaced-apart bulges 4 are provided. Of course, the post element 2 can also have a higher or lower number of bulges 4, for example two, three or five. The bulges 4 preferably extend over the entire length L of the post element 2, i.e. from a lower end 34 to an upper end 36 of the post element 2.On the bulges 4, a plurality of first holding openings 6a arranged one above the other and a plurality of second holding openings 6b arranged one above the other are provided. The first holding openings 6a are arranged along a first straight line. The second holding openings 6b are arranged along a second straight line. The first holding openings 6a lie opposite the second holding openings 6b. In the illustration shown, the holding openings 6a, 6b are arranged on opposite side surfaces 7a, 7b of the respective bulge 4 such that a particularly straight holding bolt 8a, b of a connecting part 17 can be inserted both into a first 6a and into a second holding opening 6b, so that the holding bolt 8a, b penetrates the at least one bulge 4 (see Fig. 8B). The first holding openings 6a are arranged on the first side surfaces 7a, the second holding openings 6b are arranged on the second side surfaces 7b.In the embodiment shown, a second holding opening 6b of the second side surface 7b of the same bulge 4 is arranged opposite each first holding opening 6a on a first side surface 7a at the same height h. The first 6a and second holding openings at the same height h on a bulge can also be referred to as a holding opening pair 5. The first 6a and the second holding opening 6b of each holding opening pair 5 are therefore arranged such that an imaginary straight connecting line 10 can be laid through the cross-sectional areas A6a, A6b of the first 6a and the second holding opening 6b, as shown in Fig. 2. The imaginary straight connecting line 10 can in particular be oriented perpendicular to the cross-sectional areas A6a, A6b and run through the respective centers of the cross-sectional areas A6a, A6b.The inserted retaining bolts 8a, b, provided they are inserted into a first 6a and a second retaining opening 6b, thus load the two side surfaces 7a, 7b of a bulge 4 equally in the inserted state for tensile loads, whereby the stability of the stem 1 in the event of force and torque effects via a connecting part 17 is increased and deformation of the stem 1 is avoided. The force introduced via a connecting part 17 is dissipated via the side surfaces 7a, 7b, which are usually arranged at least partially parallel to the force effect of a connecting part 17. In contrast, loads acting via connecting parts act perpendicular to the wall plane of the stem in DE 10 2021 211 507 A1, which makes bulging and other deformations easier to occur in the prior art.Furthermore, centering openings 11 are provided on the end faces 7c of the bulges 4, which connect the first 7a and second side faces 7b, and are preferably arranged between the pairs of retaining holes 5. This is advantageous, as will be described further below, for the assembly of the connecting parts 17. The centering openings 11 can also be used for locking. Furthermore, the stem 1 in the illustration shown also has openings 12, which serve for plugging in any inner tube for the stem 1.

[0084] Fig. 2 shows a part of the stem 1 according to Fig. 1 in an enlarged view. In Fig. 2 it can be seen that the stem 1 has a circular basic cross-sectional contour 13 which is interrupted at regular intervals along the circumference U around the longitudinal axis 3a by the bulges 4. The bulges 4 are thus connected via cylinder jacket sections 14 which appear as circular arc sections in the cross-section of the stem 1 (see Fig. 3). Alternatively, the basic cross-sectional contour 13 can also be, for example, n-sided. In this case, the bulges 4 are not connected by circular arcs 14, but by one or more straight surfaces which appear as straight lines in the cross-section of the stem.

[0085] Furthermore, it can be seen in Fig. 2 that the bulges 4 each have a substantially rectangular cross-sectional area 15 (indicated by the hatching). Each of the bulges 4 in Fig. 2 has a first 7a and a second side surface 7b to delimit the cross-sectional area 15, which are connected via an end face 7c. The side surfaces 7a, 7b and the end face 7c delimit a cavity 9. The bulges are therefore hollow, which saves material. The first 6a and the second holding opening 6b each have an elongated shape according to the embodiment of Fig. 2. The length of the first 6a and second holding openings 6b is, for example, at least 10 mm. The width of the first 6a and second holding openings 6b is, for example, at least 5 mm. The first 6a and the second holding opening 6b, in particular of each pair of holding openings 5, are essentially identical.Retaining openings 6a, 6b of a retaining opening pair 5 are preferably arranged parallel to one another at the same height h. The height h refers to a height parallel to the longitudinal axis 3a.

[0086] Fig. 3 shows a cross-section of the stem 1 according to Fig. 1. In Fig. 3, the circular basic cross-sectional contour 13 and the essentially rectangular cross-sectional area 15 of the bulges 4 can be seen in particular. The bulges 4 extend away from the longitudinal axis 3a. The bulges 4 and the arrangement of the first 6a and second holding openings 6b for passing a holding bolt 8a, 8b through the bulges 4 create a stem 1 which is particularly resistant to forces and torques introduced via connecting elements 17 connected to the holding hole pairs 5, without deforming. The introduced forces and torques are introduced into the basic cross-sectional contour 13 and dissipated via opposite side surfaces 7a, 7b.In comparison, in the state of the art, connecting parts are usually only connected via a single holding opening, which means that forces and torques are only introduced into the stem at a single point, which can lead to deformation more easily.

[0087] Fig. 14 shows, by way of example, alternative shapes of the cross-sectional areas 15 of the bulges 4 on a post 1. Fig. 14 is intended only to illustrate possible cross-sectional areas 15 of bulges 4 using a single post element 2. Preferably, the bulges 4 of a post element 2 each have the same cross-sectional areas 15. Fig. 4 shows a supporting scaffold combination 16 with a first post 1a and a second post 1b, which are designed according to the post 1 shown in Fig. 1. The first post 1a and the second post 1b are connected to one another via a connecting part 17 in the form of a single horizontal bar 18. For this purpose, the connecting part 17 has a first connecting element 19a and a second connecting element 19b, which are connected to one another via a strut element 20 in the form of a rod 21. The strut element 20 preferably has a length of at least 25 cm, particularly preferably at least 250 cm.

[0088] Fig. 5 shows a connecting part 17 with two identical connecting elements 19a, 19b according to a first embodiment at opposite ends of the strut element 20. As can be seen in Fig. 5, the connecting elements 19a, 19b of the connecting part 17 each have a first 8a and a second retaining bolt 8b, which are arranged parallel one above the other and can be inserted into corresponding pairs of retaining openings 5 ​​of posts 1a, 1b. The retaining bolts 8a, 8b are oriented in the same direction. It is also possible for the connecting elements 19a, 19b to each have only a single retaining bolt 8a, 8b. The retaining bolts 8a, 8b of each connecting element 19a, 19b are connected to one another via a base body 22 of the respective connecting element 19a, 19b. The retaining bolts 8a, 8b extend substantially perpendicular to a main extension axis 70 of the strut element 20.In the embodiment shown, the base body 22 of each connecting element 19a, 19b has two superimposed extensions 23, which extend parallel to the main extension axis 70 of the strut element 20 and to which the retaining bolts 8a, 8b are hinged substantially at right angles. Between the retaining bolts 8a, 8b, the connecting elements 19a, 19b each have a fixing element 24.

[0089] The fixing element 24 of each connecting element 19a, 19b can be transferred between a release position (see Fig. 6A) and a fixing position (see Fig. 6B). In the illustration shown, the fixing element 24 has a retaining clip 25 with two opposite lateral boundary surfaces 26, which is preferably open on the side facing away from the strut element 20. In the release position, the retaining clip 25 is preferably completely received in an opening 27 of the base body 22. In the fixing position, the retaining clip 25 protrudes from the opening 27. In the release position, the fixing element 24 allows the retaining bolts 8a, 8b to be inserted into corresponding retaining opening pairs 5 on the stems 1a, 1b and the retaining bolts 8a, 8b to be pulled out of the retaining opening pairs 5. In other words, the fixing element 24 in the release position allows the respective connecting element 19a, 19b to be connected to a stem 1a, 1b or .a removal of the respective connecting element 19a, 19b from the stem 1a, 1b. When a connecting element 19a, 19b is connected to a stem 1a, 1b, the limiting surfaces 26 in the fixing position rest against the side surfaces 7a, 7b of a bulge 4 (see Fig. 4 and Fig. 8A), so that the fixing element 24 blocks the release of the retaining bolts 8a, 8b from the retaining opening pairs 5 and thus a release of the connecting element 19a, 19b from the stem 1a, 1b. The engagement of the limiting surfaces 26 against the side surfaces 7a, 7b blocks any lateral movement of the connecting element 19a, 19b, which is necessary for withdrawing the retaining bolts 8a, 8b from the retaining openings 6a, 6b. Lateral movement of the connecting element 19a, 19b is only enabled when the fixing element 24 is moved into the release position.

[0090] The fixing element 24 is preferably pre-tensioned into the fixing position or into the release position (indicated by the force F). For this purpose, a spring element 28 can preferably be provided inside each of the connecting elements 19a, 19b (see Fig. 7A-C, which show a longitudinal section through a connecting element 19a). The spring element 28 acts on the fixing element 24. The fixing element 24 can be transferred between the fixing position and the release position by rotating a fixing element sleeve 60 (see the sequence in Fig. 7A-C). When the actuating sleeve 60 rotates about the main extension axis 70 of the strut element 20, the fixing element 24 is moved between the fixing position and the release position by a link guide 61, consisting of at least one link slot and one link pin. Optionally, the actuating sleeve can be locked in the release position and / or the fixing position.

[0091] Fig. 8A shows a part of a stem 1 with four protrusions 4 in an oblique view, wherein connecting parts 17 are connected to the stem 1 at three protrusions 4. The fixing elements 24 of the connecting elements 19a are in the fixing position, so that the boundary surfaces 26 of the fixing elements 24 rest against the side surfaces 7a, 7b, thereby blocking the connecting parts 17 from being removed from the stem 1.

[0092] Fig. 8B shows the part of the stem 1 with the three connecting parts 17 according to Fig. 8A in a plan view. It can be seen that the retaining bolts 8a, 8b are inserted into the retaining openings 6a, 6b of corresponding retaining opening pairs and penetrate the bulges 4.

[0093] Fig. 8C shows the handle 1 with the three connecting parts 17 according to Fig. 8A in a side view, whereby only two connecting parts 17 are visible.

[0094] Fig. 9 shows a first support frame module 29a with a post element 2 and a truss element 30a connected thereto. The post element 2 essentially corresponds to the post element 2 as described in connection with the first

[0095] Embodiment according to Fig. 1 is described, so that it will not be discussed in more detail here. The truss element 30a is attached to the stem element 2, for example by welding, riveting, soldering or screwing. In the embodiment shown, the truss element 30a is welded to a bulge 4 of the stem element 2. The remaining bulges 4 have first 6a and second holding openings 6b for connecting to connecting parts 17. The truss element 30a has a strut element 20 and a connecting element 19, which is arranged at an end region of the strut element 20 facing away from the stem 1. The truss element 30a further has horizontally, diagonally and vertically arranged truss struts 31 to increase stability, which have a smaller diameter than the strut element 20. Some of these truss struts 31 are welded to the post 1, just like the strut element 20.In the illustration shown, the connecting element 19 corresponds to the connecting elements 19a, 19b already described above in connection with Fig. 4-8C.

[0096] Fig. 10 shows a second support scaffold module 29b with two posts 1a, 1b, which are designed as explained above in connection with Fig. 1. The two posts 1a, 1b are connected to one another via a truss element 30b. In the embodiment shown, the truss element 30b is welded to a respective bulge 4 of the posts 1a, 1b. Alternatively, it is also possible to connect the truss element 30b to the posts 1a, 1b, for example by screwing or riveting. The truss element 30b has two parallel strut elements 20 and diagonally and vertically arranged truss struts 31, the truss struts 31 having a smaller diameter than the strut elements 20. The truss struts 31 connect the strut elements 20 to one another. The strut elements 20 are welded to the posts 1a, 1b.

[0097] The support scaffold part combination 16 with at least one post 1 and at least one connecting part 17 as well as the support scaffold modules 29a, 29b can be used in the construction of a support scaffold frame 32.

[0098] Fig. 11 shows a first shoring frame 32 or shoring tower with posts 1a-h which are connected to one another via connecting parts 17 (shoring part combinations 16). Each post la-h is connected in the horizontal direction to two further, parallelly arranged posts la-h via the bulges 4. In the illustration shown, lower posts la-d are connected to upper posts le-h vertically at the respective lower ends 34 and upper ends 36. In the embodiment shown, the connecting parts 17 each have four connecting elements 19a-d which are connected to one another via strut elements 20. Some strut elements 20 of the connecting parts 17 are connected to one another via diagonally and vertically arranged lattice struts 31. The lower posts la-d have base plates 35 at their lower ends 34. The upper stems le-h have 36 head plates 37 at the upper ends.

[0099] Fig. 12 shows a second support scaffold frame 32 or support scaffold tower, which is composed of support scaffold modules 29a, as shown in Fig. 9. Each support scaffold module 29a is connected horizontally to two further support scaffold modules 29a. The support scaffold modules 29a arranged on the underside of the second support scaffold frame 32 have base plates 35 at their lower ends 34. The support scaffold modules 29a arranged on the upper side of the second support scaffold frame 32 have head plates 37 at their upper ends 36.

[0100] Fig. 13 shows a third support scaffold frame 32 or support scaffold tower, which is composed of support scaffold modules 29b, as shown in Fig. 10. Each support scaffold module 29b is connected horizontally to another support scaffold module 29b via connecting parts 17. In the embodiment shown, the connecting parts 17 each have four connecting elements 19a-d, which are connected to one another via strut elements 20. The strut elements 20 are connected to one another via diagonally and vertically arranged truss struts 31. The support scaffold modules 29b arranged on the underside of the third support scaffold frame 32 have base plates 35 at their lower ends 34. The support scaffold modules 29b arranged on the upper side of the third support scaffold frame 32 have head plates 37 at their upper ends 36.

[0101] The support scaffold frames 32 or support scaffold towers according to Figs. 11-13 represent only exemplary embodiments. A support scaffold frame 32 can also be formed by a combination of the support scaffold frames 32 shown in Figs. 11-13. In addition to support scaffold modules 29a, 29b and support scaffold part combinations 16, a support scaffold frame 32 can also have further components. The connecting parts 17 can also take on shapes other than those shown in the figures. The shape of the support scaffold frames 32 in Figs. 11-13 is only to be understood as an example. In particular, the shape of a support scaffold frame 32 can be adapted to a building part to be supported (not shown). Fig. 15 shows an alternative embodiment of the connecting elements 19a, 19b. Instead of the connecting elements 19a, 19b as for example in Fig. The connecting element shown in Fig. 15 can also be used.In the alternative embodiment, a base body 22 is also provided, at the upper and lower end regions of which extensions 23 are arranged. In contrast to the embodiment according to Fig. 6A and Fig. 6B, the extensions, which extend parallel to the main extension axis 70 of the strut element 20, are arranged on opposite side edges of the base body 22. The first 8a and the second retaining bolt 8b, which extend from the ends of the extensions 23 essentially at right angles to the main extension axis 70 of the strut element 20, are oriented in opposite directions, in contrast to the embodiment of Fig. 6A and Fig. 6B. The retaining bolts 8a, 8b are arranged parallel to one another. The retaining bolts 8a, 8b have tapered ends, which facilitates insertion into the retaining openings 6a, 6b. The retaining bolts 8a, 8b are smaller than the retaining bolts 8a, 8b of the embodiment of Fig. 6A and Fig.6B is shorter. Furthermore, a centering pin 55 is provided on the base body 22, which is preferably arranged centrally on the base body 22 and between the retaining bolts 8a, 8b.

[0102] The connecting element 19a, 19b according to Fig. 15 can be connected to the stem element 2 by a rotational movement about the main extension axis 70 of the strut element 20. This process is illustrated in more detail in Figs. 16A-C.

[0103] In a first step, the connecting element 19a, 19b is guided to the stem element 2 in a rotated position in which the main extension axis 70 of the strut element is oriented substantially at right angles to the longitudinal axis 3a and the retaining bolts 8a, 8b are rotated by an angle to the horizontal, and the centering pin 55 is inserted into a centering opening 11 of the stem element 2. This facilitates the connection process (Fig. 16A). Subsequently, the connecting element 19a, 19b is rotated about the main extension axis 70 of the strut element 20 (Fig. 16B). The first retaining bolt 8a engages in a first retaining opening 6a and the second retaining bolt 8b engages in a second retaining opening 6b. The connecting element 19a, 19b is rotated (counterclockwise in the illustration shown) until the extensions 23 rest against the side surfaces 7a, 7b (Fig. 16C).Optionally, it is conceivable for the retaining bolts 8a, 8b to be longer and each engage in a first retaining opening 6a and a second retaining opening 6b when the connecting part 17 is connected. However, if this is not provided, it is sufficient if only a first 6a or a second retaining opening 6b is provided at a height h, since the retaining bolts 8a, 8b do not penetrate the bulge and, when connected, are not inserted simultaneously into a first 6a and a second retaining opening 6b.

[0104] Fig. 17A-C show, analogous to Fig. 8A-C, views of a stem element 2 with attached connecting elements 19a according to the embodiment of Fig. 15.

[0105] Fig. 18 shows an extendable support 56, in particular a formwork support. The outer tube is formed by a stem element 2. On the underside of the support 56, a base plate

[0106] 57. At the top of the support is a head plate

[0107] 58. The extension height of the support 56 can be adjusted by means of a locking pin 62 resting on a rotatable support sleeve 59.

[0108] Fig. 19 shows a fourth scaffold frame 32 or a scaffold tower having extendable supports 56 on the upper sides.

Claims

Patent claims:

1. A connecting part (17), in particular a horizontal bar (18), which has at least one connecting element (19a, 19b) for connection to a post (1, la-h), the post (1, la-h) comprising: an elongated post element (2) with a longitudinal axis (3) and a basic cross-sectional contour (13); and at least one outwardly extending bulge (4) which has at least one first holding opening (6a) and at least one second holding opening (6b), wherein the at least one first (6a) and the at least one second holding opening (6b) are arranged opposite one another on the bulge (4) in such a way that the connecting element (19a, 19b) can be fastened to both the at least one first (6a) and the at least one second holding opening (6b), characterized in that the connecting element (19a, 19b) has at least two retaining bolts (8a, 8b) arranged one above the other, preferably aligned essentially in parallel, - wherein the retaining bolts (8a, 8b) are oriented in opposite directions and a first retaining bolt (8a) can be inserted into the at least one first retaining opening (6a) and a second retaining bolt (8b) can be inserted into the at least one second retaining opening (6b), or - wherein the retaining bolts (8a, 8b) are oriented in the same direction and a first retaining bolt (8a) and a second retaining bolt (8b) can each be inserted into a first retaining opening (6a) as well as into a second retaining opening (8b).

2. Connecting part (17) according to claim 1, characterized in that the connecting part (17) has a strut element (20) with a main extension axis (70).

3. Connecting part (17) according to claim 2, characterized in that two connecting elements (19a, 19b) are arranged at opposite ends of the strut element (20).

4. Connecting part (17) according to claim 2 or 3, characterized in that the connecting element (19a, 19b) has a Base body (22) which has two superimposed extensions (23) which extend parallel to a main extension axis (70) of the strut element (20) and to which the retaining bolts (8a, 8b) are articulated substantially at right angles.

5. Connecting part (17) according to one of claims 1 to 4, characterized in that the stem has a plurality of first holding openings (6a) arranged one above the other and a plurality of second holding openings (6b) arranged one above the other on the bulge.

6. Connecting part (17) according to one of claims 1 to 5, characterized in that the connecting element (19a, 19b) has a fixing element (24) which is designed to enable a connection of the connecting part (17) to the handle (1, 1a-h) and a release of the connecting part (17) from the handle (1, 1a-h) in a release position and to block a release of the connecting part (17) from the handle (1, 1a-h) in a fixing position.

7. Connecting part (17) according to claim 6, characterized in that the fixing element (24) has a retaining clip (25) which is preferably arranged between the first (8a) and the second retaining bolt (8b).

8. Connecting part according to one of claims 2 to 4 and 7, characterized in that the retaining clip (25) is open on a side facing away from the strut element (20) and has two opposite lateral boundary surfaces (26).

9. Connecting part (17) according to one of claims 6 to 8, characterized in that a spring element (28) is provided which presses the fixing element (24) into the fixing position or into the release position.

10. Connecting part (17) according to one of claims 6 to 9, characterized in that an actuating sleeve (60) is provided with which the fixing element (24) can be transferred between the release position and the fixing position.

11. Connecting part (17) according to claim 10 and one of claims 2 to 4, characterized in that the fixing element (24) can be transferred between the release position and the fixing position by means of a slotted guide (61), which slotted guide (61) is designed to translate a rotational movement of the actuating sleeve (60) about the main extension axis (70) of the strut element (20) into a translational movement of the fixing element (24).

12. Connecting part (17) according to claim 11, characterized in that the link guide (61) has a link slot and a link pin guided therein.

13. Connecting part (17) according to one of claims 6 to 12, characterized in that the fixing element (24) is designed in the fixing position to at least partially encompass the at least one bulge (4).

14. Support scaffolding component combination, comprising: • a connecting part (17) according to one of claims 1 to 13; and • a stem (1, 1a-h) which has the following: o an elongated stem element (2) with a longitudinal axis (3) and a cross-sectional basic contour (13); and o at least one outwardly extending bulge (4) which has at least one first holding opening (6a) and at least one second holding opening (6b), wherein the at least one first (6a) and the at least one second holding opening (6b) are arranged opposite one another on the bulge (4) in such a way that the connecting element (19a, 19b) can be fastened to both the at least one first (6a) and the at least one second holding opening (6b).

15. Method for erecting a scaffold frame (32), in particular a scaffold tower, comprising the steps: Providing at least a first (1a) and a second stem (1b), each having: • an elongated stem element (2) with a longitudinal axis (3) and a cross-sectional basic contour (13); and • at least one holding opening (6a, 6b) on the stem element (2) for a connecting part (17), in particular for a horizontal bar (18); wherein the stem element (2) has at least one outwardly extending bulge (4) which has a first holding opening (6a) and a second holding opening (6b), wherein the first (6a) and the second holding opening (6b) are arranged opposite one another on the bulge (4) in such a way that the connecting part (17) can be fastened to both the first (6a) and the second holding opening (6b), preferably simultaneously; Providing at least one connecting part (17) according to one of claims 1 to 13, in particular a horizontal bar (18), wherein the connecting part (17) has a first connecting element (19a) at a first end and a second connecting element (19b) at an opposite second end; Connecting the at least one connecting part (17) to the first (1a) and the second stem (1b), wherein the first connecting element (19a) is fastened to the first (6a) and to the second holding opening (6b) of the first stem (1a) and the second connecting element (19b) is fastened to the first (6a) and to the second holding opening (6b) of the second stem (1b).

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