WO2017174050A1

WO2017174050A1 - Starting crossbar for an ascension bay with ladder of a system scaffold, system scaffold having such starting crossbars, and method for mounting a system scaffold

Info

Publication number: WO2017174050A1
Application number: PCT/DE2017/000085
Authority: WO
Inventors: Helmut Kreller
Original assignee: Wilhelm Layher Verwaltungs-Gmbh
Priority date: 2016-04-07
Filing date: 2017-04-03
Publication date: 2017-10-12
Also published as: EP3440279B1; DE102016003997A1; EP3440279A1; PL3440279T3; DE112017001868A5; ES2856127T3

Abstract

A starting crossbar (10) for an ascension bay with ladder of a system scaffold which has scaffold frames with scaffold poles which are spaced apart in parallel and connected to an upper crossbar and a lower cross-strut, characterized in that the starting crossbar (10) has a form-fitting contour (20.1, 20.2) in its respective opposite terminal end regions, the length of the starting crossbar (10) is designed such that it can be subsequently fitted between two scaffold poles of a scaffold frame and, in this fitted state, the form-fitting contours (20.1, 20.2) each engage in a form-fitting manner around the outer contour of the respective scaffold pole at least in certain regions, and said starting crossbar lies on the cross-strut in the fitted state, with the result that a secure fixing without additional connection units is achieved, and the starting crossbar (10) is designed such that at least one ascension scaffold floor can be connected.

Description

DESCRIPTION

Starting crossbar for an ascent with ladder of a system scaffold, system scaffold with such initial crossbars and method for

Assembly of a system scaffolding

TECHNICAL AREA

The present invention relates to an initial crossbar for a climbing field with ladder of a system scaffold, the scaffolding frames with parallel spaced having an upper crossbar and a lower crossbar connected scaffolding stems.

The present invention further relates to a system framework, in particular Layher lightning scaffold system, arranged scaffold-shaped in scaffolding longitudinally spaced scaffolding frames with scaffolding posts, which are interconnected by upper cross bar and lower cross member, connected in the upper cross bars

or suspended scaffolding floors are present and between two longitudinally adjacent scaffolding frames, a rise field is present, with an upper scaffolding floor with a pass-through flap, on the underside of a ladder is connected.

Finally, the present invention also relates to a method for assembling such a system framework.

STATE OF THE ART

From the catalog Layher Blitz scaffolding system technology brochure, issue 01.12.2010 a system framework is known that is used in scaffolding and has proven itself for years. In Fig. 8a is a perspective section of this known Layher Flash scaffold system 50 is shown. The system framework 50 has scaffolding frames 52, which are in framework longitudinal direction GL in a predetermined grid

1

iBestätigungskopie are positioned. Each scaffolding 52 consists of two in

Transversely spaced parallel scaffolding posts 53, which in the upper end region via an upper cross bar 56 and in the lower

End region via a lower cross member 58 are connected to each other. To increase the rigidity of the scaffolding frame 52, a gusset plate 66 is welded in each case in the inner corner area between the upper cross bar 56 and the scaffold posts 53. The scaffolding frames 52 are designed so that they can be plugged into each other in the vertical direction. The upper cross bar 56 is formed as upwardly open U-profile, are suspended in the framework floors 54. Of the

Scaffolding frame 52 itself is attached to height adjustable foot spindles 68 with its scaffold posts 53, which in turn on a

Floor board 78 are stored on the bottom side in the lowest level. In the longitudinal direction GL, the stiffening via the connection of diagonal 64 in the gusset plate area and in the opposite lower end of the adjacent scaffolding frame 52. Furthermore, in the longitudinal direction at a corresponding height railing rods 72 and the underside longitudinal bars 74 to the scaffolding stems 53 on the outside

connected.

Each two adjacent scaffolding frames 52 in conjunction with the scaffold floors 54 form a framework field. In order to come from the ground to the upper framework level, a rise field 70 is formed, the top side a scaffold floor 54.1 - mounted in the upper cross bar 56 of the adjacent scaffolding frame 52 of the climbing field 70 - a pass-through flap 60 which folds upwards

is formed, wherein the underside of the access door 60, a conductor 62 is connected or mounted. In order to securely store the conductors 62 in the lower end region and to ensure that the conductors 62 have a predetermined angle of inclination, for example 70 °, the lower end region of the bars of the ladder 62 is mounted on a riser floor 76 which is left and right of an initial cross bar 80 is connected, which is arranged between the foot spindles 68 and the foot spindles 68 plugged scaffolding frames 52. As shown in Fig. 8b, the initial transverse bar has 80 in its two end regions in each case a tube sleeve 82 which is plugged onto the spindles 68 before the scaffolding frame 52 is attached. By connected ascent scaffold floor 76, which must be mounted before the start of the assembly of scaffolding frames 52 in the climbing field 70, a reliable storage of the conductor 62 is given.

In practice, however, it happens that during assembly of the

Scaffolding system 50 is detected after completion of the system scaffold 50 that has been forgotten to mount the riser floor 76 and the initial cross bar 80. This results in the image shown in FIG. 7. The ladder 62 depends, depending on the Ausspindelung the foot spindles 68 in the air or is too steep or too uncertain on the existing terrain floor. The subsequent attachment of Anfangsquerriegeln 80 for hanging a

Rise scaffold floor 76 is not possible because the scaffolding frame 52 would have to be raised higher in the area of the ascent field 70 than the foot spindle 68 is long, with the addition that the adjacent scaffolding fields do not allow lifting.

In order to enable a subsequent installation of a U- initial cross bar, it is known to use a U-cross bar with two welded scaffold couplings. However, this crossbar must be fixed awkward by screwing the clutches, which is time consuming. The couplings make the initial crossbar more expensive and more expensive to manufacture. Such a U-cross bar as an alternative, should it have been forgotten to mount a U-start bar in time, is placed between the scaffold posts 53 of the scaffolding frame 52 above the lower cross member 58 and then attached by screwing. PRESENTATION OF THE INVENTION

Based on the cited prior art is the

present invention, the task or the technical problem of specifying an initial crossbar, which can be retrofitted in a simple and faster manner in an already created system framework and economically produced. The present invention is further based on the object of specifying a system framework in which a safe storage of the ladder in the area of the ascent field is subsequently made possible. Furthermore, the present invention has the object or the technical problem of specifying a method that allows subsequent installation of a climbing scaffold floor as a reliable storage structure for the ladder.

The inventive initial crossbar of the type mentioned is given by the features of independent claim 1.

Advantageous embodiments are the subject of claims 2 to 7 directly or indirectly dependent on the independent claim 1.

Accordingly, the initial cross bar according to the invention is characterized in that the initial cross bar has a positive locking contour in its respective opposite end end regions. The length of the initial cross bar is designed so that it can be retrofitted between two scaffolding posts of a scaffolding frame and the positive locking contours in each case Outer contour of the respective scaffold handle at least partially positively surrounds and in the

introduced state rests on the cross member, whereby a secure fixation is achieved without additional connection units, and the initial cross bar is formed so that at least one riser floor is connected. Due to its structural design, the starting transverse bolt according to the invention can subsequently be easily attached to the already assembled system framework in a simple manner

corresponding cross struts of adjacent scaffolding frames of a

Rise field are applied, which in the mounted state without further attachment of terminal units by the form-fitting contours secure fixation of the initial crossbar on the crossbar is achieved, so that subsequently the

Ascending scaffold floor can be hung in the initial cross bar and the ladder can be safely stored with the lower end of the ladder stiles on the riser scaffold floor.

A structurally particularly simple embodiment, which allows a quick connection of the climbing scaffold floor, is characterized in that the initial cross bar is designed as an upwardly open U-profile.

A particularly advantageous and constructive embodiment of the inventive cross bar is characterized in that the positive locking contour is formed as a concave, in particular part-circular, recess in the front end region of the web of the U-profile. Here is the clear smallest inner distance of the

Molded contour formed in accordance with the clear inner spacing of the scaffold stems of a scaffolding frame, so that in each case always a reliable positive engagement is achieved with the scaffolding stems. The formation of a part-circular recess is the fact that the scaffolding handles are usually designed as round tube profiles.

An alternative embodiment, which has a constructionally different form-locking contour, is characterized in that the form-fitting contour is formed by projecting over the web flanges of the U-profile, wherein the clear inner spacing of the flanges substantially to the outer diameter of the scaffold post of the

Scaffolding corresponds to. It is particularly advantageous to provide web recesses in the web of the U-profile of the starting crossbar, through which any Bortbrettbolzen be feasible, so that the connection of Bortbrettern is also possible in this area.

A particularly economical production of the initial crossbar according to the invention is made possible by the fact that the U-profile cross-sectionally corresponds to the shape of the contours contours the cross section of the upper crossbar of the scaffolding frame. The upper crossbars are namely manufactured as a serial component in large numbers and can be used according to the invention by simply attaching the concave form-locking contour described above as an initial cross bar.

In order to prevent slippage of a connected rise scaffold floor in the longitudinal direction of the initial crossbar, that is to say in the transverse direction of the system scaffold, the initial crossbar may additionally comprise holding units which abut, for example, on the suspension structures of the scaffold floor. In this case, the holding units may preferably be formed as welded between the flanges of the U-profile in the upper end portion profiled rod elements.

The system framework according to the invention, in particular Layher Blitz scaffold system, of the aforementioned type is given by the features of independent claim 8. Accordingly, the system frame according to the invention is characterized in that on the lower cross braces of the adjacent scaffolding frames of the ascent each between the scaffolding posts an initial cross bar is placed positively according to one or more of claims 1 to 7, is connected to the at least one riser floor respectively connected to or suspended on the upper side of the lower

End portion of the ladder is stored. The inventive method for mounting a system scaffolding with retrofitting a climbing scaffold floor for supporting a ladder is given by the features of claim 9. The inventive method is accordingly characterized in that after creation of the system framework in the climbing field on the lower crossbar of the left and right of the ascent field arranged scaffolding frames each an initial cross bar is placed according to one or more of claims 1 to 7 and a positive connection with the scaffold stems of the respective Scaffolding is achieved, at the initial cross bar at least one climbing scaffold floor

is connected or mounted and the lower end of the ladder is stored on the riser floor.

In order to ensure a safe ascent, the conductor is preferably arranged at an angle to the horizontal of 60 ° to 80 °, in particular approximately 70 °.

Further embodiments and advantages of the invention will become apparent from the features further listed in the claims as well as by the embodiments given below. The features of the claims may be combined in any manner as far as they are not obviously mutually exclusive.

BRIEF DESCRIPTION OF THE DRAWING

The invention and advantageous embodiments and developments thereof are described below with reference to in the

Drawing illustrated examples described and explained. The features to be taken from the description and the drawing can be applied individually according to the invention or to a plurality of them in any desired combination. Show it:

Fig. 1 is a schematic perspective view of an embodiment of an initial cross bar for retrofitting Assembly of a climbing scaffold floor with the respective present in the frontal end region form-fitting contours, schematic plan view of the initial cross bar according to Hg-1,

Fig. 3 is a schematic side view of the starting crossbar according to

Fig. 1,

Fig. 4 shows a schematic cross section through initial crossbar according to

Hg-1,

Fig. 5 is a schematic fragmentary perspective view of an assembled system scaffold with subsequently mounted initial crossbars in the ascent field and to the

Initial crossbar connected scaffold floor for storage of a ladder,

6 is a schematic perspective view of the detail A of FIG. 5,

Fig. 7 is a schematic perspective view of a mounted

System framework with missing in the ascent field

Rise scaffold floor,

Fig. 8a is a schematic fragmentary perspective view of a mounted known system scaffold with a mounted to start mounting riser base using a known initial cross bar, which is connected between the foot spindles and the attached scaffolding frame and

Fig. 8b is a schematic perspective view of the known

Initial cross bar, which is used in the system framework of FIG. 7. WAYS FOR CARRYING OUT THE INVENTION

Figures 8a and 8b show a perspective fragmentary view of a known system scaffold 50, namely the Layher Blitz scaffold system, in the normal structure using a known starting cross bar 80 and connected to the transverse struts 58 in the ascent box 70 ascent floor 76, on the top side a ladder 62, which leads to the access door 60 of the scaffolding floor 54.1 arranged in the floor above. This known system framework 50 is described in the introduction to the description. Fig. 7 shows the situation of the system frame 50, in which it has been forgotten to mount the known initial crossbars 80 in time, so that a connection of a riser base 76 is not possible, whereby a secure inclined storage of the ladder is not possible. The same components bear the same reference numerals as in Fig. 8 and will not be explained again.

Figures 1 to 4 show an embodiment of an initial cross bar 10, which is formed as an upwardly open U-profile with a lower side web 12 and on both sides formed, upwardly facing flanges 14. In each front end region of the starting crossbar 10, a concave form-fitting contour 20.1 or 20.2 is formed in the web 12, each having a part-circular recess 21. The diameter of the part-circular

Recess 21 corresponds to the diameter of a scaffold post 53 of a scaffolding frame 52. The smallest clear inner spacing of the opposing form-fitting contours 20.1 or 20.2 is designated in Fig. 1 with the distance QL. This distance QL of the form-fitting contours 20.1, 20.2 or the

Recess 21 essentially corresponds to the clear inner spacing of the framework stems 53 of the scaffolding frame 52.

The longitudinal direction of the starting cross bar 10 is indicated in the figures 1 to 4 with L. The longitudinal direction L of the starting crossbar 10 corresponds to the state of the initial state used in the system frame 50. Due to the illustrated structural design of the starting cross bar 10, this can be retrofitted to a system frame 50 and indeed in a state as shown in Fig. 7, in which has been forgotten, the connection options for a riser floor 76 to create.

In Fig. 1 is further shown that in the web 12 of the initial cross bar 10 web recesses 16 are provided, which serve that any Bortbrettbolzen may be passed, so that Bortbretter can be connected in this area.

To order with the inventive initial cross bar 10

Possibility of connection of a rise scaffold floor 76 in

To provide area of a rise field, the initial cross bar 10 in a simple manner to the lower cross member 58 of the

Scaffolding 52 placed on the left or right of the Ascension field 70. Due to the selected distance QL and the geometry of the form-fitting contours 20.1 or 20.2 is automatically without the use of further connection means a

Formed fit between the applied initial cross bar 10 and the opposite transverse stalks 53 in the transverse direction.

As a result, the initial cross bar 10 is secure to the respective

Scaffolding frames 52 stored. Now, in a simple manner, a climbing scaffold floor 76 in the bottom area of the climbing field 70 can be hung in the mounted on both sides and mounted initial cross bar 10, so that a secure support surface for the ladder 62 is available. As a result, the conductors 62 can be arranged and stored at a preferred angle of inclination to the horizontal of 70 °.

This state is shown schematically in FIG. 5, for example, on a known system framework 50. The system framework 50 corresponds to the system framework 50 shown in FIG. 7, but with the subsequent assembly of the initial crossbar 10 and the

Rise scaffolding floor 76.

Fig. 6 shows in detail the arrangement of the subsequently launched in a simple manner and positively connected initial cross bar 10 on the not visible in Fig. 6 lower cross member 58 of the scaffolding frame 52. By simply placing the initial cross bar 10 on the lower cross member 58 is without further Connecting means achieved a positive connection with the two opposing scaffolding posts 53, thereby enabling safe storage and ensures a simple subsequent connection of a rise scaffold floor 76.

The illustrated form-fitting contour 20.1 or 20.2 provides a constructive solution for generating a positive connection of the laid on the cross member 58 initial cross bar 10 with the

There are also other structural form-fitting training conceivable.

Claims

01. Initial crossbar (10) for a climb field (70) with ladder

(62) a system framework (50) having scaffolding frames (52) with scaffolding posts (53) connected in parallel with an upper crossbar (56) and a lower crossbar (58),

- characterized in that

- The initial cross bar (10) in its respective

opposite Stirnendbereichen a

Has positive locking contour (20.1, 20.2),

- The length of the initial crossbar (10) is formed so that it is between two scaffolding posts (53) of a

Scaffolding frame (52) is subsequently introduced and in this introduced state, the form-fitting contours (20.1, 20.2) at least partially positively surrounds the outer contour of the respective scaffold post (53) and rests in the introduced state on the transverse strut (58), whereby a secure fixation without additional connection units is achieved, and

- The initial cross bar (10) is formed so that at least one riser floor (76) can be connected.

02. Initial cross bar according to claim 1,

- characterized in that

- The initial cross bar (10) is designed as upwardly open U-profile.

03. Initial cross bar according to claim 2,

- characterized in that

the form-fitting contour (20.1, 20.2) as a concave,

in particular part-circular, recess (21) in the front end region of the web (12) of the U-profile is formed.

04. Initial cross bar according to claim 2,

- characterized in that

- The positive locking contour is formed by opposite the web (12) projecting flanges (14) of the U-profile, wherein the clear inner spacing of the flanges (14) substantially corresponds to the outer diameter of the scaffold post (53) of the scaffolding frame (52).

05. Initial crossbar after one or more of

Claims 2 to 4,

- characterized in that

- In the web (12) Stegausnehmungen (16) are present through which any Bortbrettbolzen are feasible.

Initial cross bar according to one or more of claims 2 to 5,

- characterized in that

- The U-profile cross-sectionally down to the

Forming contours (20.1, 20.2) corresponds to the cross section of the upper cross bar (56) of the scaffolding frame (52).

Initial cross bar according to one or more of the preceding claims,

- characterized in that

- The initial crossbar (10) holding units, which prevent slipping of a connected rise scaffold floor (76).

08. System scaffolding (50), in particular Layher Blitz scaffolding system, arranged in scaffold longitudinal direction (GL) grid-shaped spaced scaffolding frames (52) with scaffold posts (53) which are interconnected by upper cross bar (56) and lower cross member (58), in the upper cross bars (56) connected or suspended scaffolding floors (54) are present and between two longitudinally adjacent scaffolding frames (52) a rise field (70) is present, with an upper scaffold floor (54.1) with a pass-through flap (60), at the a conductor (62) is connected on the underside,

- characterized in that

- On the lower crossbars (58) of the adjacent scaffolding frames (52) of the Ascension field (70) between the scaffold posts (52) an initial cross bar (10) is placed form fit according to one or more of the preceding claims, to the at least one scaffold floor (76) is respectively connected or mounted, is mounted on the upper side of the lower end portion of the conductor (62).

09. Method for assembling a system scaffold with

Subsequent mounting of a climbing scaffold floor (76) for supporting a ladder (62) according to claim 8,

- characterized in that

- After creation of the system framework (50) in the rise field (70) on the lower crossbar (58) of the left and right of the ascent field (70) arranged scaffolding frames (52) respectively an initial cross bar (10) according to one or more of claims 1 to 7 is achieved and a positive connection with the scaffolding posts (53) of the respective scaffolding frame (52),

- At the initial cross bar (10) at least one

Rise scaffold floor (76) is connected or hooked in and the lower end portion of the conductors (62) on the

Rise scaffold floor (76) is stored.

Method according to claim 9,

- characterized in that

- The conductor is arranged at an angle to the horizontal of 60 ° to 80 ° (old degree), in particular about 70 ° (old degree).