DE4340199C1 - Scaffolding anchorage - Google Patents

Abstract

A bracket-type scaffolding anchorage, in particular for the attachment and securing of structures and brackets on which it is possible to walk, comprises an anchor dowel (23) which can be cast in the concrete structural part (5). An anchor body (53) is retained in said anchor dowel such that it can be screwed in and unscrewed. The improved bracket-type scaffolding anchorage is distinguished in that the anchor head (19), even in the mounted state, comes to bear against the concrete outer wall, a free plug-in space (75) being formed in the process, and in that the conventionally used double hooks (13) of a bracket-suspension element (3) can be plugged onto the anchor neck (17) exposed between the freely overhanging anchor head (19) and the anchor body (53), screwed in the dowel (23), and can be suspended. Preferably, the dowel (23) and the bracket anchor (15) exhibit, at least over part of the length, an intermediate section which thickens conically towards the outside. <IMAGE>

Description

The invention relates to scaffolding anchoring according to the preamble of claim 1.

In particular, console scaffolds are so-called work and Protective scaffolding on buildings and civil engineering or around Supporting structures, the covering surfaces of which rest on brackets.

The console scaffold anchors are often used used two different types of fastening or prefers.

In one known type of attachment, the bracket scaffold on two round steel loops (suspension bracket) anchored with a diameter of, for example, 10 mm. These round steel loops are in a reinforced concrete ceiling concreted and stand with their loop on the side, to which the console is to be attached, via. It han usually concerns the outside of the house. The  Hook-in loops must be at least 50 cm in the Protruding the reinforced concrete ceiling. The hanging loops are included their ends in the lower reinforcement layer or to be anchored with end hooks and an additional crossbar, which is also cast in concrete.

The console frames themselves have a so-called double hook on, which is then inserted into the loops from above can be added. The console frames are then placed over it kept, which is preferred in the lower area above a wooden plank still attached or fastened to the wall support against the wall.

However, this known system does not refer to ver negligent disadvantages.

On the one hand, it is unwieldy because the suspension bracket is only ge are delivered bundled and therefore due to their fork shaped, comparatively long extension interlocked and are difficult to separate can.

When disassembling the brackets, they must then survive the loops are flexed. Then remains in the concrete about 90% of the brackets cast in concrete. This creates Cold bridges, as the suspension bracket from the outer edge of the Concrete wall up to approx. 50 cm into the reinforced concrete ceiling Submit.

When using the suspension bracket in the reinforced concrete ceiling the formwork must be additionally recessed. In front but also the above mentioned flexing after the use of the console frame is work and expensive. The loops mentioned can only be used once. Because of the back in the reinforced concrete The remnants of the loops can ultimately still  Rust damage occurs.

In contrast, it is also a different fastening system from the brochure "The ROBUSTA single shoe" known for console scaffolding, which with a so-called hanging shoe works.

The hook-on shoe is attached to a threaded sleeve concreted in attached by means of a screw. This hanging shoe has a substantially rectangular shape in plan view Frame through which the respective double ha ken of a console scaffold can be attached. Here the screw is shorter than the free path of the one concrete threaded sleeve so that by tightening the Screw a hole on a plate-shaped one interspersed on the hanging side of the suspension shoe, this plate-shaped contact surface is firmly on the outside of the wall. But this console frame anchoring also has disadvantages on.

One of the major drawbacks is that up to a total of Nine different parts are needed to work from the Phase of concreting the threaded sleeve until it is fastened to be able to carry out all steps against the hook-on shoe nen. There are differences for different loads dimensions of the suspension sleeve and the thread deschraub available. Using a tool (Wrench) must always be tightened Backup can be brought about. In the case of an attachment and attaching this so-called hanging shoe to a building deeck a special shoe is needed, on the otherwise a plate-shaped plant side on the building side Angle rail with additional side support rails is welded to prevent tilting and swiveling to ensure a secure system at the corner of the building.  

A largely comparable state of the art technology has become known from US Pat . No. 3,131,784 ( FIG. 6).

This console scaffold anchoring also comprises an anchor body which passes through a suspension shoe in a bore, the suspension shoe in this prior art having only a bore at the lower end of a winch plate, in which a nose of a scaffold rod can be suspended. In this embodiment ( Fig. 6), the anchor body must be screwed into a nut seated at the end of the anchor sleeve cast in concrete until its anchor head protruding outside the housing, the anchor shoe over the entire surface to the outside of the concrete wall (or the shuttering wall still sitting in front of it for pouring the concrete ) is present.

A disadvantage of this prior art is in particular that the anchor sleeve already together with the anchor body must be attached and installed on a formwork wall, before the concrete can be poured. Will the formwork removed, then the anchor body must first from the in Concrete threaded nut and the anchor sleeve removed be rotated.

A console scaffold anchor essentially for wall walls (and not concrete) is from FR-OS 2,609,310 became known. A hole must be drilled in the supporting wall be introduced through which a threaded bolt with the outside Anchor head protruding over the housing wall being, on the inner wall surface on the protruding Thread attachment of the anchor body with the interposition of one Support plate a nut is unscrewed.

On the outside of the housing, a double hook  or fork-shaped suspension element of the one to be anchored Console can be hung.

The main disadvantage of this prior art is that possibly the anchor bolt by tightening the guts ter on the inside of the supporting wall so far into the housing wall is drawn in that there is no sufficient axial distance more remains between anchor head and housing wall to get there the fork-shaped or double-hook-shaped bracket attachment element to be able to plug in.

In contrast, it is an object of the present invention one compared to the generic state of the art to create improved scaffolding anchoring that is easy to handle with high security.

The task is according to the invention in accordance with solved claim 1 specified features. Favorable off designs of the invention are in the subclaims specified.

According to the invention, a console anchor is proposed at which ensures that the anchor head is also in the mon tied, screwed and anchored condition in the console Anchor dowels always with the formation of a free insertion space at an axial distance to that poured or poured in the concrete bar console anchor anchor comes to rest. An undesirable This reliably prevents axial shifting.

As is known per se from FR-OS 2,609,301, is at the console anchorage according to the invention also none separate hook-on shoe (such as the US PS 3,131,784) for anchoring a console frame dig. Rather, it is provided that the console frame with its respective fork-shaped or double-hook-shaped attachment element plugged directly onto the anchor body neck and  can be worn over it.

The scaffold anchoring according to the invention draws is further characterized in that the console anchor at least in a partial length towards the anchor head a truncated cone or cone shape is provided so that its Diameter towards the anchor head on this axial Partial length increases. The anchor plug is corresponding shaped. This allows optimal power absorption comparatively low cost of materials can be achieved. It also ensures that the anchor head ver equally easy to turn in or out, because hereby act between the anchor sleeve and anchor body the frictional forces are minimized.  

Is a thread approach only on the ge to anchor head opposite end of the console anchor (where does not have to have a conical shape at this anchor end, son which is preferably cylindrical), so it is also the assembly effort and assembly time compared to State of the art significantly reduced. Because the anchor body can simply be inserted into the part of its axial length cast anchor sleeve (which also corresponds in a corresponding partial length section tapering outwards tert is) and only needs to be inserted in the The remaining area is screwed into the internal thread of the anchor sleeve become.

The anchor head is preferably circular in an axial top view shaped and can still on the outer ring in Um recessed handle recesses etc. provided be so that the anchor without any additional tools can be completely turned in and out.

In order to further improve handling, it is also provided see that the anchor sleeve with on its opening side set lid or cap with an axially uninhibited slidably supported and axially projecting nail can be provided. This anchor sleeve prepared in this way can be placed on a formwork board in the appropriate place with a hammer in the correct position be brought. After pouring and removing the Scha the anchor sleeve cap over the nail  deducted so that then the anchor body is immediately screwed into the exposed opening of the anchor sleeve can.

The anchor sleeve is preferably divided into at least two parts has an anchor sleeve base portion as shown in FIG DE 43 20 320 A1 is described.

In contrast to the previous publication of Kon brine anchors generally larger, d. H. longer and wider is preferred to the one from the above the known anchor sleeve base section another sleeve-shaped plastic part put on, wel especially the conically expanded partial length range the anchor sleeve includes. So that the anchor sleeve when removing the anchor from the concrete plant is pulled out, this anchor sleeve section can even if with at suitable points in the radial direction standing body sections, slats, fingers etc. ver to be seen.

The at least regionally conical design of the anchor body and the anchor sleeve has the great advantage that the frictional forces between the Inside of the anchor sleeve and the outside of the screwed Anchor body does not become too large, so that a easy installation and removal of the anchor body in the Console sleeve is possible. At the same time this results also production-related significant advantages, in particular then when the anchor sleeve is made from an injection molded part, in particular a plastic injection molded part.

Even the one that is only threaded at its end Anchor body can be cast, for example  Steel casting, be made.

The invention is described below with reference to drawings explained in more detail. The individual shows:

Figure 1 is a vertical section through a concrete wall with inserted scaffold anchoring and console scaffold held in cal matic vertical sectional view.

Fig. 2 is an enlarged detail view of the ge shown in Figure 1 already in axial longitudinal section anchor body, which is screwed into an anchor sleeve.

Fig. 3 is a sectional view corresponding to Figure 2 of the multi-part anchor sleeve before attachment to a formwork and before pouring.

FIG. 4 shows an axial end view of the anchor sleeve shown in FIG. 3;

Figure 5 shows the anchor body in schematic side view.

Fig. 6 is an axial end view of the anchor head of the anchor body shown in Fig. 4.

In Fig. 1 in schematic vertical cross section of a console 1 with console Einhängelementen 3 is shown, which are of a concrete work of construction 5, in the shown execution example of a concrete wall 5 ', for example, the outside mounted along a lateral distance to each other, and which then longitudinal Bohlen as scaffold decking 7 and 9 hanging brackets and intermediate bars can be suspended.

The console hook-in elements 3 have a suitable position, starting in the exemplary embodiment shown starting approximately at the height of the scaffolding covering and running downwards at right angles, a double hook 13 offset parallel to the concrete wall at a short side distance and accessible from below in the form of a slot that the Kon solen suspension element 3 can be attached from above to the console anchor 15, which will be described in more detail below, in the region of an anchor neck 17 under engagement of the anchor head 19 . The double hook 13 has an adequately dimensioned length corresponding to the safety determinations.

To support the lower tilting moments in the direction of the concrete structure 5, a wooden plank 21 can be inserted and fastened between a vertical spar 3 'of the bracket suspension element 3 and the outer surface of the concrete.

The anchor dowel 23 , also referred to below as the anchor sleeve, is discussed below.

In Fig. 3 the anchor plug 23 is in its preferably already technically related. Shown prepared for use on the delivery side.

In the exemplary embodiment shown, it comprises a dowel base or a dowel end section 23 'with an internal thread 27 and preferably offset with respect to one another in the circumferential direction and having diverging ribs 29 . The basic structure, size and shape can correspond to the "edging dowel" described in the aforementioned DE 43 20 320 A1. Ie that this so-called edging dowel can also be used as part of the con dowel 23 in this case.

In the region of the insertion opening 33 of the dowel end section 23 'then another dowel section 23 ''follows, which in the exemplary embodiment shown has an outwardly extending conical extension 35 . The in Fig. 2 and 3 right and outside Einsteckbe rich 37 of the outer second dowel section 23 '' then again cylindrical.

Both dowel sections 23 'and 23 ''are preferably made of a suitably suitable, as hard as possible plastic, the insertion opening 33 of the dowel base section 23 ' surrounding the annular end wall 39 striking an annular step shoulder 41 on the second dowel section 23 ''. In the area of the overlapping material section between the first and second dowel sections, both dowel sections can be connected by a snap connection acting here or by friction.

If the upstand anchor already described according to DE 43 20 320 A1 is not to be used as a component also in the context of the present anchor anchor 23 , the anchor anchor 23 explained can also be designed as a one-piece construction part 23 .

In the actual insertion area, a nail plug 43 is placed ( Fig. 3), the outer edge 43 'of the end wall 45 or at another suitable step of the bracket anchor dowel 43 , that is, the outer dowel portion 23 ''in the embodiment shown. The nail head 47 is preferably cast in the nail plug 43 . The nail 48 projects axially beyond the nail plug 43 .

The anchor dowel 23 prepared in this way is attached and fastened in such a way that by striking a hammer on the slightly convexly reinforced bottom surface 49 of the dowel 23, the nail 48 is hammered into a formwork wall from the inside until the nail plug 43 rests on the circuit wall ( in the case of an insulating layer which has already been prepared there, it is preferably removed beforehand in the size of the diameter of the dowel 23 ).

The impact forces of the hammer are transmitted from the dowel base 23 'via the annular end wall 39 to the second dowel section 23 ' and via the end wall 45 or a comparable step approach also to the nail plug 43 .

If necessary, 51 wires can be inserted through holes 21 provided in the ribs, in order to hold the end of the dowel 23 securely in a predetermined position when pouring a ceiling or formwork wall with concrete.

The shape or dimension of the anchor anchor 23 explained corresponds to the console anchor 15 , as shown in FIG. 5 alone in a corresponding side view.

The console anchor 15 is divided into an anchor body by 53 with an end or screw portion 54 , which preferably has a cylindrical shape, and an adjoining cone shape 55 , which in turn merges into a cylindrical portion 57 on the outside. The anchor body 53 thus formed then merges on the outside into an anchor neck 17 , which carries the anchor head 19 shown in FIG. 5 on the outside.

If necessary, then after the casting of the anchor dowel 23 shown in FIG. 3, the formwork wall with removal of the nail 48 and the nail plug 43 is pulled off, so that the anchor dowel 23 , as shown in FIG. 1, is se in the poured and hardened concrete mas 65 remains. In order to prevent the nail plug 43 from being pulled out so that the dowel section 23 '', which is formed separately in the exemplary embodiment, is accidentally pulled out, this dowel section 23 '' also has radial protrusions, barb-like approaches or kervorsprungen 24 on.

Now only the anchor shown in Fig. 5 in side and in Fig. 6 in plan view has to be screwed in. The entire anchor body 53 can be inserted comparatively far into the console anchor dowel 23 without turning. This is because the outer diameter of the end or screw section 54 is dimensioned smaller than that of the cone-shaped plug section 55, which is outer and conical. After reaching the screw section 54 in the provided with the internal thread nen plug base section 23 ', the console anchor 15 is then screwed into the thread until at least the Konusab section 55 on the cone-shaped plug section 23 ''rests flat. Since the anchor head 19 z. B. circumferentially offset anti-slip or grip troughs 67 ( Fig. 6) and a rear undercut or flattened 69 , the console anchor 15 can be screwed into his final position without tools without any tools. Only if it is necessary can be tightened with the help of an additional tool, wrench or when disassembling a loosening of the anchor body 53 can be made easier by the fact that the wrench is plugged onto the surface of the key plane 71 shown in FIG and then the anchor body 53 is rotated.

The design and dimensioning is selected such that in the final assembly seat of the console anchor 15 in the anchor plug 23 the anchor head 19 preferably with the essential parts of the console neck 17 over the insertion opening 37 of the console anchor plug 23 survives. Other words, since the insertion opening 37 or in the region of the outer surface of the concrete wall - if followed by a insulation is layer provided - layer in the outer surface region of the insulation comes to rest, so is always the anchor head 19 in a corresponding length dimension (preferably corresponding to the length of the anchor neck 17 ) over this outer surface of the concrete wall or the insulation layer thereon, so that on the back of the anchor head 19 a free space or insertion space 75 thus formed is formed.

In Fig. 2, the outer boundary surface of the hardened concrete mass 65 , ie the wall 5 shown in Fig. 1, is shown schematically in dashed lines. From this it can also be seen that the insertion opening 37 , ie the annular end wall 45 at the outer end of the dowel 23 with the outer boundary surface of the wall, ie in the exemplary embodiment shown, is aligned from the hardened concrete mass 65 . 2, the shoulder 76 shown in FIG. 2 lies before the transition from the anchor body 53 screwed into the dowel 23 to the anchor neck 17 projecting outwards.

The above-mentioned double hook 13 of a bracket hanging element 3 can then be plugged onto this anchoring head, as is indicated in FIG. 2, as is indicated by dashed lines in FIG. 2. The two single hooks 13 'of the double hook are adjacent with sufficient play (to make assembly easier) next to the anchor neck 17 , the distance between the two single hooks 13 ' being smaller than the radial dimension, ie the radial extent of the anchor head 19 . Since this is preferably rotationally symmetrical or at least essentially rotationally symmetrical, that is to say at least in an inner region which is greater than the distance between the two individual hooks 13 ', regardless of the final screw-in position of the console anchor, there is always an outward overlap of the distance between ensures the double hook 13 , whereby a console element is held securely on the building.

An anchor thus explained, in particular console anchors, can be attached to any one Concrete structure should also be installed in the corner area. Vastness There is no need for special forms of training.

If a console scaffold is to be dismantled again, the relevant console anchor 15 can be unscrewed again from the console anchor nozzle 23 after removing the console suspension elements 3 .

As can be seen in particular from the drawing according to FIGS. 2, 3 and 4, a support beam 79 is provided in the region of the outer insertion end 37 of the plug 23 in the tangential direction. This is preferably made with the dowel body as a uniform molded part.

This support beam 79 has advantages if, before the concrete is poured on the outside of a house wall, it is preferred not to pull up a conventional, removable formwork wall, but, for example, bricks. At the point where the dowel 23 is then to be placed, the bricks adjacent to it are placed at a distance so that the insertion opening of the dowel 23 is as flush as possible with the outer wall surface of the brick walls. So that the dowel is as tight as possible and can not slip, especially not when pouring with concrete, the laterally protruding Auflagebal ken 79 is provided. This relatively thin support beam 79 protrudes laterally, so that left and right of the dowel 23 on this support beam 79, the bricks adjoining the side can be placed and concreted with the remaining brickwork. In this case, the dowel 23 is held securely in the desired position. In this case, of course, it is not necessary to attach a nail plug with a nail.

Claims (18)

1. Scaffolding anchoring, in particular for holding walkable brackets on concrete structures

• - With an anchor plug to be cast in the concrete component ( 5 ) ( 23 ),
• - With an anchor body ( 53 ) which can be screwed in and out of the anchor plug ( 23 ) by means of a thread
• - And with an anchor head ( 19 ) carried by the anchor body ( 53 ),

characterized by the following features

• - In the assembled state, the anchor head ( 19 ) has an axial distance from the anchor dowel ( 23 ) cast in concrete,
• - The anchor body ( 53 ) and the anchor plug ( 23 ) have at least in some areas in the direction of the Ankerkop fes ( 19 ) increasing cone shape ( 55 ).

2. scaffolding anchoring according to claim 1, characterized in that the anchor body ( 53 ) is in one piece. 3. scaffold anchoring according to claim 1 or 2, characterized in that the anchor body ( 53 ) only in areas, in particular on its to the anchor head ( 19 ) opposite the anchor end portion ( 54 ) is provided with a Außenge thread. 4. Scaffold anchorage according to one of claims 1 to 3, characterized in that the anchor body ( 53 ) has in its central portion a cone shape ( 55 ) extending to the anchor head ( 19 ) towards a larger diameter. 5. scaffolding anchorage according to one of claims 1 to 4, characterized in that the anchor body ( 53 ) has a be adjacent to the anchor neck ( 17 ) extending cylindrical portion. 6. scaffolding anchoring according to claim 5, characterized in that the adjacent to the anchor neck ( 17 ) provided ne cylindrical portion ( 57 ) of the anchor body ( 53 ) has an axial length corresponding to the thickness of a conventional building insulation layer. 7. scaffolding anchoring according to one of claims 1 to 6, characterized in that the anchor neck ( 17 ) for attaching a tool, in particular wrench, key surfaces ( 71 ) are formed. 8. scaffold anchoring according to one of claims 1 to 7, characterized in that the anchor head ( 19 ) is formed in wesent union rotationally symmetrical. 9. scaffolding anchoring according to one of claims 1 to 8, characterized in that the anchor head ( 19 ) in the circumferential direction offset recessed grips ( 67 ) and / or knurled at the peripheral edge. 10. scaffolding anchorage according to one of claims 1 to 9, characterized in that the anchor head ( 19 ) viewed from its outside has a wall-side, flattened ( 69 ) extending to the central axis. 11. Scaffolding anchorage according to one of claims 1 to 10, characterized in that the anchor body ( 53 ) is formed as a rotating part or as a casting, in particular an injection molding. 12. Scaffolding anchorage according to one of claims 1 to 11, characterized in that the anchor plug ( 23 ) has a shape that speaks ent the shape of the anchor body ( 53 ). 13. Scaffold anchoring according to one of claims 1 to 12, characterized in that the anchor dowel ( 23 ) is at least divided in two transverse to the longitudinal direction. 14. scaffolding anchoring according to claim 12 or 13, characterized in that the two anchor dowel sections ( 23 ', 23 '') by means of a friction or snap lock in axial alignment to each other in and to each other. 15. scaffolding anchorage according to one of claims 1 to 14, characterized in that the anchor plug ( 23 ), the Dü belendabschnitt ( 23 ') and the closer to the outside of the wall and adjoining second Dübelab section ( 23 '') with radially projecting Anchor elements ( 29 , 24 ) are provided. 16. Scaffolding anchorage according to one of claims 1 to 15, characterized in that the anchor dowel ( 23 ) has a removable nail plug ( 43 ) as a unit which can be handled in a uniform manner, in which in the axial direction a nail ( 48 ) is held, whose Nail head ( 47 ) is anchored in the nail plug ( 43 ), in particular cast in. 17. Scaffolding anchoring according to one of claims 12 to 16, characterized in that the dowel end section ( 23 ') in the direction of impact at a corresponding school ter ( 41 ) of the adjoining further dowel section ( 23 '') and the edge of the Insertion opening ( 37 ) of the dowel ( 23 ) is in turn supported on a corresponding impact shoulder of a nail plug ( 43 ).