WO1984000572A1

WO1984000572A1 - Sheeting device

Info

Publication number: WO1984000572A1
Application number: PCT/EP1983/000198
Authority: WO
Inventors: A Nigel Thompson
Original assignee: Emunds & Staudinger Gmbh & Co; Shorco Trench Systems Ltd
Priority date: 1982-07-23
Filing date: 1983-07-25
Publication date: 1984-02-16
Also published as: DE3366982D1; EP0100083A1; EP0100083B1; EP0116569A1

Abstract

To support the walls of an excavation, there are provided devices comprising upper and lower pairs of sheeting plates (2, 3) of which the sliding sides are guided by supports (1). The supports are arranged facing each other by pairs and held spaced apart by struts (4, 5) and are provided on either side with guiding slots (6) to receive the edges of the sheeting plates. The sides of the guiding slots turned towards the excavation wall will form a guiding surface (7) for the support (1) and the sides turned towards the inside of the excavation will form a guiding plane (8). To improve and simplify the support surfaces (1), there is arranged a single guiding slot (6) on each side of the supports (1) wherein the edges of the two sheeting plates (2, 3) are guided. The edges (9) of the outer plate (2) are guided between the guiding surface (7) and the guiding plane (8) and the edges of the inner plate (3) are guided between the outer plate (2) and the guiding plane (8).

Description

Name: shoring device

The invention relates to a shoring device for supporting the walls of a trench with a stepped cross-section, with upper and lower pairs of large Ver Ver construction boards, the side edges are slidably guided on supports, which are arranged in pairs opposite each other and are kept at a distance by means of cross struts and the Both sides for receiving the edges of the shoring plates have guide slots, the side facing the trench wall is formed by a guide flange of the support and the side facing the interior of the trench is formed by a guide plane. The guide plane can be formed, for example, by a second guide flange or a row of rollers arranged one above the other and rotatably mounted about horizontal axes.

Shoring devices of this type are known from DE-OS 23 23 321 and DE-OS 30 31 099.

The known shoring devices for supporting the walls of a trench with a stepped cross section have the disadvantage that the supports have two mutually parallel guide slots on both sides need, namely a guide slot for the lower, inner plates and a second guide slot for the upper, outer plates. The production of these supports, each with two mutually parallel guide slots on both sides, is complex. The two guide slots make the supports unnecessarily heavy.

The object of the present invention is to provide a shoring device in which the supports are simpler and less complex than in the known shoring devices.

This object is achieved by the features of patent claim 1.

In the shoring device according to the invention, the supports have only one guide slot on each side and only one guide plane on which the edges of the upper, outer shoring panels and the inner, lower shoring panels are supported.

The guide plane is advantageously formed by two rows of rollers rotatably mounted on the supports about horizontal axes. These roles for the upper, outer shoring panels and for the lower, inner shoring panels can be mounted on common axes. The shoring device according to the invention has the advantage that it is not only suitable for shoring a trench with a stepped cross section, but also for shoring a trench with a rectangular cross section. In this case, two sheeting plates with projecting edges are inserted one above the other in the supports. Such a shoring has the advantage that the working space in the area of the trench bottom is larger than with a stepped shoring.

Provided, however, that the lower shoring panels are inserted into the trench independently of the upper shoring panels would like or want to pull out of the trench, a graded shoring is necessary.

Further features emerge from the patent claims. In the following description, the invention is explained in more detail with reference to the exemplary embodiments shown in the drawings. Show it:

1 is a plan view of a pair of supports with a shoring plate inserted into the supports,

2 shows an end view of a pair of supports inserted into a trench,

3 is a plan view of a support with sheeting plates inserted into the guide slots,

Fig. 4 is a plan view of a further embodiment of a support with inserted into the guide slots th shoring panels.

The shoring device shown in FIGS. 1, 2 and 3 is composed of supports 1 arranged in pairs opposite one another, into which large-area shoring panels 2 and 3 are guided so as to be vertically displaceable. The pairs of opposing supports are kept at a distance by means of cross struts 4 and 5. These cross struts 4 and 5 can be stiffeners, but they can also - as shown - be designed as spreaders. On both sides of the supports 1 guide slots 6 are arranged, the sides of the trench wall facing a guide flange 7 of the. Support 1 and its side facing the interior of the trench is formed by a guide plane 8. 1 and 2, the guide plane 8 of a guide slot 6 is formed by a series of rollers 11, 12 rotatably mounted about horizontal axes 10. The

Distance of the guide plane 8 from the inside of the guide flanges 7 is 50 to 150% greater than the thickness of a shoring plate 2 or 3. The upper and outer shoring plate 2 in the step installation has an edge 9 guided between the guide flange 7 / and the guide plane 8, the leader level 8 projects. In this way, space is gained between the upper, outer shoring plate 2 and the guide level 8 in order to be able to insert an inner shoring plate 3 between the outer shoring plate 2 and the guide level 8, the lateral edges of which are also supported on the guide level 8. The inner lining plate 3 is shorter by more than twice the width of a projecting edge of the outer lining plate 2.

If the guide plane 8 is formed by rollers rotating around axes 10, the edges of the outer shoring plate and the inner shoring plate can run on the same rollers. However, it is advantageous to divide the rollers so that the projecting edges of the outer lining plate 2 roll on the rollers 11, while the edges of the inner lining plate 3 are supported on rollers 12.

Instead of the rollers 11 and 12, skids or flanges of the supports 1 can also be provided.

At the outer ends of the guide flanges 7 of the supports 1, strips 19 are arranged, which cooperate with strips 20, which are arranged on the outer side edges of the mounting plate 2 and which have the effect that the upper, external mounting plates 2 are positively guided in the supports 1, so that cohesion of shoring plates 2 and supports 1 in the longitudinal direction of the trench is ensured.

As shown in FIG. 3, the support 1 has two spaced-apart side walls 13 and 14, which on the outside of the trench have an outer wall 15 forming the two guide flanges 7 and at least one row of welded pipes 16 together. are connected. Through the two side walls 13 and 14 connecting pipes 16, the axes 10 can be inserted, on which the rollers 11 and 12 are rotatably mounted. Between the side walls 13 and 14 of the support 1, the heads of the cross struts 4 and 5 can be pivotally mounted about horizontal axes. The connecting tubes 16 can also serve as pivot axes for the cross struts or spreaders 4 and 5.

The supports 1 are open between the side walls 13 and 14 on the inside. On this open side, the side walls 13 and 14 are provided with reinforcing beads 17 directed outwards. In this way, the support 1 receives a high flexural rigidity. On these beads 17 support plates 18 are welded, which support the ends of the axes 10.

In Fig. 1, the distance of the guide plane 8 from the inside of the guide flanges 7 is more than twice the thickness of a shoring wall 2 or 3. In the support 1 according to FIG. 3, the distance of the guide plane 8 from the flanges 7 is less than twice the thickness of a shoring wall, because a guide edge 21 is fastened to the inner plates 3, the thickness of which is only about half as large as the thickness of the inner shoring plate 3.

Because the outer shoring panels 2 are reinforced by the attached edges 9 which run over the entire panel height, it is expedient to choose the height of these shoring panels 2 larger than the height of the inner shoring panels 3.

4 shows a shoring device according to the invention, in which the shoring panels which are normally to be arranged on the outside and on the top can also be arranged on the inside by moving them around Can be rotated 180 ° around a horizontal axis. In this exemplary embodiment, the individual parts, insofar as they have the same effect, have the same reference symbols as in the exemplary embodiment according to FIG. 3, but these reference symbols are provided with a dash. The plate bodies of the shoring panels 2 'and 3' are of completely identical design and the edge regions 32 and 33 are fastened to these shoring panel bodies as prefabricated parts. These prefabricated edge areas 32, 33 can be welded to the same-shaped shoring panel body or can also be screwed on if a detachable connection is desired.

The edge region 32 of the shoring plate 2 'has a support edge 34 which is formed from a relatively thick steel sheet. If the shoring plate 2 'is inserted as the upper outer plate into the guide slot 6 of the support 1', the projecting edge of the support edge is supported on the guide plane 8, which is formed by a row of rollers 11 '. The other edge of the support edge 34 is guided between the side wall 14 and the bar 19 '. In comparison to the previously described exemplary embodiments, the edge 42 of the strip 19 'is at a greater distance from the guide flange 7'. Between the bar 19 'and the side walls 13' and 14 'of the support 1' guide plates 43 are arranged, on which the edges of the support edge 34 can slide. The outside 37 of the shoring plate 2 'is arranged in relation to the guide plane 8 and in relation to the contact surfaces of the supporting edge 34 which rest on it, in such a way that the outside 37 of the shoring plate 2' is aligned with the outside 36 of the support 1 'when the plate is as outer upper shoring plate is inserted into the guide slot 6. The lower inner plate 3 'is designed such that the inside 38 of this plate is flush with the inside of the support 1' when the edge region 33 rests on the guide plane 8 or on the row of rollers 11 '. As shown in FIG. 4, only one shoring plate 2 'is inserted into the other guide slot 6 of the support 1', but this shoring plate is rotated by 180 ° about a horizontal axis with respect to the first shoring plate 2 '. In this position of the shoring plate 2 ', the outside 37 of the shoring plate 2' is aligned with the inside of the support 1 '. In this embodiment, two or more shoring panels can also be inserted one above the other into the guide slots 6 of the support 1 '. This design has the advantage that the shoring device can also be used when a stepped trench cross section is not required or is not desired. Furthermore, this embodiment has the advantage that, for example when concreting the trench bottom, there are no protruding parts of the support on the inside and that when a trench with a stepped cross section is built, no support parts project into the alignment of the trench wall.

Sheets 39 are welded between the two side walls 13 'and 14' of the supports 1 for transverse bracing. On the inside of the trench, the sheets which form the side walls 13 'and 14' of the support 1 'are bent U-shaped to the sides, so that U-shaped roller rails 40 are formed, between the parallel webs of which the rollers 11' are supported on both sides are. In order to stiffen these roller rails 40, horizontal metal sheets 41 are welded into the gaps between the rollers 11 '. Furthermore, vertically extending stiffening plates 44 can be provided which connect the inner sides of the webs of the U-shaped rail 40 to one another. In this way, it is prevented that the rails 40 do not bend even when the guide plane 8 is subjected to extremely high loads. To prevent the support edges 40 from buckling, stiffening plates 35 are provided at an angle between the inside of the support edge 34 and the inside of the shoring plate 2 '.

Claims

1 PATENT CLAIMS:

1. Shoring device for supporting the walls of a trench with upper and lower pairs of large-area shoring panels (2,3), the lateral edges of which are slidably guided on supports (1), which are arranged in pairs opposite one another and by means of. Cross struts (4,5) are kept at a distance and have on both sides guide slots (6) for receiving the edges of the shoring panels, the side facing the trench wall of a guide flange (7) of the support (1) and the side facing the interior of the trench a guide plane (8) is formed, characterized in that only one guide slot (6) is arranged on each side of the supports (1), in which the edge regions of two shoring plates (2, 3) are guided, the edge region (9 ) of the outer lining plate (2) is guided between the guide flange (7) and the guide plane (8) and encompasses the edge region of the inner lining plate (3) and the edge region of the inner lining plate (3) between the outer lining plate (2) and the guide plane (8) is performed.

2. Shoring device according to claim 1, characterized in that the guide plane (8) of a row on the sides of the support (1) about horizontal axes (10) is rotatably mounted rollers.

3. Shoring device according to claim 2, characterized in that on the axes (10) separate rollers (11) for the upper, outer. Shoring plate (2) and rollers (12) for the lower, inner shoring plate (3) are mounted.

4. Shoring device according to claim 3, characterized in that the support (1) has two spaced side walls (13, 14) which on the outside of the trench via an outer wall forming the guide flanges (7). (15) as well as a number of welded Tubes (16) are connected and through the tubes (16) the axes (10) for the rollers (11, 12) are inserted.

5. Shoring device according to claim 4, characterized in that the cross struts (4,5) around the tubes (16) are pivotally attached to the supports (1).

6. Shoring device according to one of claims 1 to 5, characterized in that the supports (1) are open on the inside and there have the side walls (13, 14) reinforcing bulges (17) on which the ends of the axes (10) supporting support plates (18) are welded on.

7. Shoring device according to one of claims 1 to 6, characterized in that the thickness of the guide edge (21) of the inner shoring plate (3) is less than the thickness of the shoring plate (3).

8. Shoring device according to one of claims 1 to 7, characterized in that, with the exception of the edge areas (32,33) of the shoring panels (2 ', 3'), the shoring panels are formed by the same and the edge areas (32,33) as prefabricated parts are attached to these shoring panels.

9. Shoring device according to one of claims 1 to 8, characterized in that the outside (37) of the shoring plate (2 ') is arranged in this way in relation to the guide plane (8) and in relation to the contact surfaces of the support edge (34) which are supported thereon that the outside of the plate (2 ') is flush with the outside (36) of the support (1') when the plate is inserted as the outer upper plate in the guide slot (6) and the outside (37) of the shoring plate (2 ') aligns with the inside of the support (1 ') when it is rotated through 180 ° into the guide slots (6) of the support. (1 ') are introduced.

10. Shoring device according to one of claims 1 to 9, characterized in that the side walls (13 ', 14') of the support (1 ') forming sheets on the inside of the support (1') to form U-shaped rails (40) are each bent over to the open side and in the two parallel webs these U-shaped rails have one-piece rollers (11 ') for supporting the edge regions (32, 24) of the shoring plate (2') and the edge region (33) of the shoring plate (3 ') are mounted and that in these U-shaped rails (40) between the rollers (11 ') transverse stiffeners (41, 42) are arranged on the opposite inner sides of the webs and on the inside of the connecting web of the U-shaped rail (40 ) are welded on.