EP0781363B1 - Trench falsework panel - Google Patents

Abstract

PCT No. PCT/DE95/01047 Sec. 371 Date May 23, 1997 Sec. 102(e) Date May 23, 1997 PCT Filed Aug. 4, 1995 PCT Pub. No. WO96/08610 PCT Pub. Date Mar. 21, 1996A lining plate intended for employment in connection with trench lining in below-grade construction becomes assembly- and removal-friendly and simultaneously resistant to flexural buckling even against forces acting during driving in by means of the excavator bucket, if a hollow profile plate structure, which forms the plate frame and is welded together with the remaining plate part, is provided, and if at least one suspension eye is cut into the plate surface a distance apart from the circumferential hollow profile frame elements, which contains a fastening means for a lifting means of the crane.

Description

The invention relates to a shoring panel consisting of between two rectangular cover plates enclosed profile sheet elements and all-round, welded to the cover plates Hollow profiles, preferably as a frame construction from all-round closed hollow profiles, for use at Trench formwork in civil engineering.

A shoring panel with a circumferential hollow profile is described in DE 30 15 110 A1. This also for supporting trench walls The provided shoring plate has essentially outer sheets extending over the entire plate area, one rectangular frame supporting the edges of the outer sheet and profiles stiffening and crossing each other. The Frame profiles form closed together with the outer sheets Hollow box sections, that is, one that delimits the panel body Hollow profile frame. This can consist of: an upper anvil crossbar (pressure beam), on which during operation is pushed or hit with the excavator bucket; from side end profiles (Vertical spar), which is just like the anvil profiles Can have a rectangular cross-section; and from one lower pointed or cutting profile with triangular cross-section.

To such shoring panels during construction or dismantling, for example during assembly to produce a shoring box or during insertion in the trench during slide rail installation or pit shoring to be able to lift and direct Breakpoints needed at which a crane hook, rope or the like is to be fastened so securely that accidents (e.g. by falling panels) can be avoided. For this reason are used on the top edges of the shoring panels e.g. according to DE 41 11 266 C1, eyelets provided. The eyelets interrupt in the known the anvil traverse. This weakens the frame construction. The whole plate, on its top edge when in use often hit with an excavator shovel for driving tends to bend especially in the area of the eyelets.

US-A-35 93 528 describes a shoring panel for use in the trench formwork in civil engineering, consisting of a stiffened rectangular cover plate and encircling, with the Cover plate welded hollow profiles. On the four inner ones There are lift eyes at the corners of the shoring panel. These will welded to the hollow profiles. So it's outside to the shoring panels adjacent to their circumferential Latches with hollow profiles and hanging holes. Such welded parts are used in rough operation on the construction site slightly bent so that it no longer has a crane hook are to be recorded.

When installing a shoring box made of two shoring panels, the general which put a shoring plate on the floor, then are spreading (these are spacers between the Trench facing sheeting panels) in the on the ground attached plate, the second plate is then with a crane lifted over the first slab, and the spreaders are inserted into the second plate from below and fastened there. In this work, the second plate must match exactly Crane can be directed and kept safe to prevent accidents cannot occur. To this end, be in practice the outer narrow sides of the two side end profiles the plate up to approximately the tip of the cutting edge of the lower hollow profile preferred as "free" triangular sheet metal tabs and with a Hanging hole equipped. When conducting horizontally the crane can then be attached to the two triangular tabs and into the Eyelets of the attachment points assigned to the top edge of the panel, attack at four points.

The side provided on the longitudinal ends of the cutting edge, Pierced tabs are generally used after a short period of use bent or even broken off. In practice hence the shoring plate when mounting on the cutting edge mostly held by - without a special attachment point - the Crane hooks can simply be hung over the cutting edge. It exists then there is always the risk that one or the other hook when the Plate slipped sideways so that the whole plate tilts.

The attachment points for attacking a crane are, however not only during assembly, but also when inserted in the Digging, when moving on in the trench or when dismantling. In any case, it must be excluded that a Shoring board or a shoring box formed from it when inserting in the trench or when removing it from the trench Crane can slip.

The invention has for its object an overall stable bending and especially on the top edge compared to those at Driving in with bending forces To create sheeting plate that is easy to assemble and dismantle and is the stability of the hollow profile frame not impairing and still a secure hold for the attachment points guaranteeing the crane attack.

The solution according to the invention is specified in claim 1. Improvements and further embodiments of the invention described in the subclaims.

According to the invention, the shoring plate specified at the beginning into the one enclosed at a distance from the surrounding hollow profiles Plate area at least one by means of crane pulling means detectable hanging eye incorporated, which is a separate Fastening device as an attachment point for the crane pulling device contains. Under the fastener will be immobile or mobile, e.g. rotatable, eyelets, hooks, bolts or understood the like, which are suitable for a hook, to securely hold a rope or similar traction device, although the hanging eye is so far from the edge of the plate is that e.g. the crane hook does not over the plate edge can reach into the hanging eye. Preferably the suspension eyes at a distance from the adjacent parts of the hollow profiles integrated into the plate surface. Basically you can the suspension eyes but directly touching the hollow profile parts adjoin.

According to a development of the invention, the hanging eye formed as a hole through the sheeting or it can be one-sided up to an inner wall of the shoring panel pass. In the latter case, the suspension eye can opposite side of the shoring plate a second The suspension eye is congruent. The opposite But eyes can also independently in the Panel surface - always arranged at a distance from the hollow profiles will.

The invention makes one of the crane pulling means safe fixed, detectable fastening point of the shoring plate created, that does not touch the hollow profile frame of the shoring panel and therefore does not affect its bending stability. In spite of the large distance caused by the width of the hollow profile each of the suspension eyes according to the invention from the plate edge can the crane traction means secure hold directly in the hanging eye because there is a specially designed crane hoist adapted fastener is provided.

According to a further development of the invention, the fastening means as pivotable about a parallel to the plate surface There is an eyelet mounted on the axis. The eyelet can be symmetrical or be formed asymmetrically with respect to the axis. In the latter case in particular, the eyelet can be shaped that they are in a pivot position over the adjacent outer surface of the cover plate of the plate protrudes. The crane hoist can then grasp the eye on the outside of the shoring plate. The Pivotal movement of the eyelet may also have the advantage, that the eyelet can also be lowered in the hanging eye by folding down is. The asymmetrical eyelets are preferred in the suspension eyes open on one side. In as a continuous Hole-shaped suspension eyes are preferred "Symmetrical" eyelets are provided in each swivel position (around their axis) lie completely within the plate volume and accordingly do not represent an obstacle in the plate surface.

Instead of fixed or movable eyelets, steel rods can also be used or bolts are provided as fasteners. The bars can be in the central plane of the plate, but also more lie in the plane of the cover plates. Can in the hanging eye as a fastener as a further alternative also a the disc standing perpendicular to the plate plane is welded in, which has at least one hole, e.g. B. for hanging a crane hook, owns.

Suspension eyes according to the invention, in particular with fixed therein or movably pivoted fasteners or slings for lifting eyes, ropes or the like can both in the upper area of the shoring panel, adjacent to the there hollow section frame part as well as in the lower area of the Shoring board, adjacent to the hollow profile with a triangular cross section be provided. If a pair of suspension eyes in the upper Third of the plate area and a pair of hanging eyes in the lower one One third of the plate surface at a distance from the circumference provided hollow profile is present, the sheeting raised in four-point suspension and with the crane in a certain horizontal position, especially during assembly a shoring box. The hanging eyes and the fasteners built into it can be cast, Welded or forged parts are formed. The hanging eye should have such a stable framework that it is overall the stability of those enclosed by the hollow profile frame Board area not affected.

It should be noted that a shoring plate of the described Kind on the lower edge usually has a cutting edge that but the invention also on sheeting without such Edge refers. These include so-called build-up plates, which on a shoring board driven into the ground (with cutting edge) "Build up" when digging a particularly deep trench is. Finally, have used in slide rail shoring Plates also often have no cutting edge on the lower edge. In all In cases, however, the shoring plate should be a rotating one Have hollow profile frame, so possibly everywhere can have a square or rectangular profile.

Fig. 1

eine Ansicht der Innenseite (in den Graben gerichtete Seite) einer Verbauplatte;

Fig. 2

einen Schnitt längs der Linie II-II von Fig. 1;

Fig. 3

einen Querschnitt durch eine Verbaubox, etwa entsprechend dem Schnitt III-III von Fig. 1; und

Fig. 4 bis 8

Ausführungsbeispiele von Aufhängeaugen.

Details of the invention are explained on the basis of the schematic representation of exemplary embodiments. Show it:

Fig. 1

a view of the inside (side facing the trench) of a shoring panel;

Fig. 2

a section along the line II-II of Fig. 1;

Fig. 3

a cross section through a shoring box, approximately according to section III-III of Fig. 1; and

4 to 8

Embodiments of hanging eyes.

The one shown in Fig. 1 to 3, generally designated 1 Shoring board consists of two rectangular cover surfaces 2 and 3 with sandwiched sheet metal elements 4 and one circumferential, welded to the cover plates 2 and 3 Hollow profile edge, all in all as a rectangular frame construction 5 is referred to and from one continuously from corner 6 to corner 6 reaching hollow profile 7, 8 or 9. To the Frame corners 6 are the abutting ends of the spars or hollow profiles 7 to 9 welded together so that the Rectangular frame construction 5 becomes one piece. The profile bars 7 to 9 can be longitudinally welded or seamlessly rolled or drawn be. So it is preferably not just U- or C-profiles, but closed hollow profiles.

In particular, the frame structure 5 according to FIGS 3 from a specially stabilized against bending buckling Printing spar 7 on the top edge 10 of the plate, one against each Forces particularly stabilized in the vertical longitudinal direction Vertical spar 8 on the plate side edges 11 and one Cutting edge 12 having the lower edge 13 of the plate Pointed hollow profile 9. During the pressure beam 7 and the vertical beam 8 a rectangular cross section, preferably with the long one Rectangle side parallel to the adjacent cover plate 2, 3, have should have the pointed hollow profile 9 on the lower edge 13 is a cross section approximately in the shape of a rectangular one Triangle, of which one cathete 14 perpendicular to the plane of the adjacent Cover plates 2, 3 whose other cathete 15 in the Area of the outer cover plate facing the ground during installation 3 lie and its hypotenuse 16 facing the interior of the trench should be.

Receptacle housing intended for attaching and fastening spreaders 17 with the opening on the inside when installed Cover plate 2 in the lining plate 1 adjacent or adjacent to the hollow profiles - preferably 7 and 8 - embedded, without that any weaknesses, especially notches the profile bars would be required. The receiving housing 17 are of course only necessary if the shoring plate 1 in box shoring (supplemented to a shoring box 18 with from receiving housing 17 to receiving housing of the trench opposite Sheeting panels 1 reaching 19 after Fig. 3), but is used in slide rail shoring, if necessary with along the vertical hollow profiles 8, approximately on the dashed line welded or molded T-rails 20th

If with the help of a shoring plate 1 one in Fig. 3 in section Shown box 18 is to be assembled, is first a shoring plate 1 placed on the floor, then the Spread 19 into the receiving housing 17 of the horizontal shoring plate 1 installed, then the second shoring plate positioned with a crane over the first shoring panel that the spreaders 19 in the receiving housing 17 of this Insert the plate and fix it there. To the shoring plate To be able to conduct and lift safely are in the exemplary embodiment various preferred ways to attach provided by crane pulling means.

The essential fastener created by the invention is that in the plate surface at a distance from the circumferential Hollow sections 7 to 9 embedded suspension eye 21, the a fastening means 22 as an attachment point for a crane pulling means contains and therefore by a crane hook, one on the crane hanging rope or the like can hold securely fixed. 1 and 2, for example, one pair of suspension eyes is provided 23 and 24 in the upper third and in the lower Third of the shoring plate (each with a distance from the circumferential provided hollow profile 7 to 9). If a shoring plate 1 on the through the two pairs of suspension eyes 23 and 24th defined points, it can be horizontal in any way to be conducted.

It is also within the scope of the invention to have only one hanging eye 21 or only one pair of suspension eyes 23 or 24 in the longitudinal surface of the plate to provide. For example, only the one above Hollow profile 7 adjacent pair of suspension eyes 23 are provided when it comes to the shoring plate on these suspension eyes 21 or 23 to raise or lower vertically or in the trench move on. Alternatively, only the one below Hollow profile 9 adjacent pair of suspension eyes 24 are provided and to lift the plate in combination with at least one immediately outside to the upper hollow profile 7 via eyelets 25 welded drawing ring 26 serve. If necessary, the Draw rings 26 are welded to the upper hollow profile 7 that its bending stability is not impaired. Finally, the upper pair of suspension eyes 23 can be used in combination with hooks hung over the cutting edge 12 for lifting the plate can be used.

The suspension eyes 21 according to the invention can according to FIGS. 2 and 4 are formed in different forms. Fig. 2 shows through the mounting plate 1 through eyes 21, in which the respective Fasteners, e.g. a bolt or one by one Axis 27 pivotable eyelet 22 are stored. Alternatively, you can 4 also be provided that the single suspension eye 21 extends on one side only to an inner wall 28. Here there are two other alternatives, namely that two suspension eyes 21 directly congruent at one point face each other (see the upper version of FIG. 4) or that two on different surfaces 2, 3 of the shoring panel 1 provided suspension eyes 21 independently of one another in the each area are distributed (see the alternative below of Fig. 4).

Especially when in the exemplary embodiment according to FIG. 4 as well as in the exemplary embodiment according to FIG. 2, in a hanging eye 21st pivotable fastener 22 is desired, it can be meaningful to the fastener than in relation to the associated axis 27 to form asymmetrically, so that Swivel of the eyelet 22 from the top surface 2, 3 of the shoring plate 1 out of space becomes possible. Here, as in the others The fastening means 22 can, however, be exemplary embodiments also simply as extending parallel to the top surfaces 2, 3 Bolts 22 'are formed. Every hanging eye 21 can have a solid frame 29.

FIGS. 5 to 8 show exemplary embodiments of fastening means in passing through the hollow plate Suspension eyes shown. The exemplary embodiments apply accordingly, if the suspension eyes according to Fig. 4 only partially go through the plate.

Fig. 5 shows a suspension eye 21 with an annular fastener 22 a according to FIG. 2, which is parallel about an axis 27 is pivotally mounted to the plate surface 2. The embodiment 6 shows a fastener 22 b, the to a certain extent consists of a half ring, which is also around an axis 27 is pivotally mounted in the suspension eye 21.

The embodiment of FIG. 7 shows two in the hanging eye 21 approximately radially extending fasteners 22 c, which as Bolts or steel rod are formed. The rods 22 c can in the exemplary embodiment in the plane of the top surfaces 2 and 3 or be located anywhere within the suspension eye 21. Each of the rods 22 c forms a spoke in the Suspension eye 21. In the exemplary embodiment according to FIG. 8, a Fastening means 22 d provided in the suspension eye 21, which as disc approximately perpendicular to the plane of the plate is. The disc has at least one hole 22 e in which Application is to hang a crane hook. The disc 22 d stands like the bolts 22 c of FIG. 7 approximately radially in the suspension eye 21.

One intended for use in trench formwork in civil engineering Shoring plate is easy to assemble and dismantle as well at the same time it is stable against bending even when driving in forces acting with the excavator bucket, if one the plate frame forming welded to the rest of the plate part Hollow profile frame construction is provided and if in the Panel surface at a distance from the surrounding hollow profile frame parts at least one hanging eye is incorporated, which contains a fastener for a crane pulling means.

Reference list

1 =

Sheeting plate

2 =

inner cover plate

3 =

outer cover plate

4 =

Profile sheet element

5 =

Rectangular frame construction

6 =

Frame corner

7 =

Pressure beam

8 =

Vertical spar

9 =

Pointed profile

10 =

Top edge of plate

11 =

Panel side edge

12 =

Cutting edge

13 =

Lower edge of panel

14, 15 =

Cathete

16 =

hypotenuse

17 =

Receptacle

18 =

Installation box

19 =

Spreads

20 =

T-rail

21 =

Hanging eye

22 =

Fasteners, eyelet

22 '=

bolt

23, 24 =

Pair of suspension eyes

25 =

eyelet

26 =

Drawing ring

27 =

axis

28 =

Interior wall

29 =

frame

Claims (5)

1. Lining panel (1) consisting of profiled sheet metal members (4) enclosed between two rectangular cover plates (2, 3) and peripheral hollow profiles (7 to 9) welded to the cover plates, preferably as a frame construction of hollow profiles closed on their periphery, for use in trench planking in underground working, in which case machined in the panel surface enclosed by the peripheral hollow profiles (7 to 9) is at least one suspension eye (21) able to be grasped by crane pulling means, which suspension eye contains separate fastening means (22) as an abutment point for the crane pulling means.
2. Lining panel according to Claim 1, characterised in that provided as the fastening means is a ring (22) mounted to tilt, in particular about an axis (27) lying parallel to the surface of the panel and which is shaped symmetrically or asymmetrically with respect to the axis (27).
3. Lining panel according to Claim 1 or 2 characterised in that provided as fastening means (2) is at least one bolt (22c) welded as a radial spoke in the suspension eye (21).
4. Lining panel according to at least one of Claims 1 to 3, characterised in that as the fastening means (22), a disc (22d) which is substantially perpendicular to the surface of the panel is welded in the suspension eye (21), which comprises at least one hole (22e), preferably of a size for the suspension of a crane hook.
5. Lining panel according to at least one of Claims 1 to 4, characterised in that the fastening means (22) in the suspension eye (21) consist of cast steel, mild steel or forged steel.

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