DE2560498C2 - Shoring unit for stiffening the walls of construction trenches, pipe trenches or the like - Google Patents

Description

The invention is illustrated below with reference to a ', graphically illustrated ALisführungheispiclt- ii, iher rl.intcrt. It is 1: 1 g g. 1 a nominal trench cross section hat inserted VCI unit, F i g. 2 the hook connection between the spindle strut and strap, partially broken and F i g. 3 is a plan view of this.

There is a basic structural unit of the structural unit according to the invention from two wall panels W, which are made using two end spindle struts @ can be built into a tici. however, movable building units are also assembled.

These wall panels are stiffened on the inside of the wall. Components this stabilization measure are vertical straps 3 in the area of the narrow edges the blackboard W. With regard to the vertical straps 3, it can be real box profiles or to act with their legs turned against the wall U-profile. lim to achieve an exact integration of the individual shoring devices parallel to the belt. indicate the individual wall panels W at the upper ends via the vertical straps 3 Shoes 13 protruding at the top and open to the outside. The latter enclose the subsequent vertical belt section from three sides with contour-adapted wraparound. The two vertical straps 3 are fixed to one another by screwing.

The vertical belts 3 have insertion openings 19 for the spindle struts 1. On the one hand, a sufficiently rigid. on the other hand it is also sufficient To realize elastically spatially movable spindle strut connection, the spindle ends gieifen I 'and 1 "with the inclusion of an elastic intermediate piece 26 on the wall panels Wan.

Spindle strut 1 and blackboard W or vertical belt 3 are lighter Compression (partial bracing) of the intermediate piece 26 braced together. It a wedge bracing is used. The corresponding wedge 27 penetrates at diametrically opposing wall sections congruent transverse slots 28 of the spindle end 1 'or 1 "The wedge back is supported on the wall-side slot end section 28 'from. The wedge 27 also penetrates a perforation 29 in the tail 30 ' of a holding hook 30. l), - i ', tail end 30' successively penetrates centrally through the disc-shaped, preferably made of rubber intermediate piece 26 and with something Play a flange-like closing plate that enlarges the support surface @@ This is welded to the front ropes of the spindle strut ends t ', t ". acts on the opening edge 29 'lying on the mine.

I) cr retaining hook 30 is designed as a double hook such that diametrically Opposite the round hook shaft cross-section protruding by the same length Itakennasen 33 are available. The total hook core length y is dimensioned somewhat larger than the length z of the longitudinal slot-like, vertical insertion openings 19. In order to nevertheless to allow easy insertion of the retaining hooks. every hook is back 34 beveled (see Fig. 3).

The hook lugs 33 extend perpendicular to the course of the wedge. so that is also made clear optically. whether the retaining hook 30 is the desired transverse position to occupy insertion opening 19 designed as a longitudinal slot. Wcnn the hammer head of the holding hook 30 is in the correct position, the one visible from the outside is available Wedge 27 perpendicular to the ditch bottom. The tensioned position is thus clearly of recognizable outside. The wedge is due to its vertical position and its own weight 27 already secured against automatic deletion. The soapy pad. d. H. against the Box wall 16 stepping end of the retaining hook 30 is designed like a roof ridge Above-described spindle strut assignment gives the shoring device both the desired stability as well as mobility. so that winkcl- deviations to the vertical within plus minus 5 degrees are possible. These are in practice Occurring deviations, such as when inserting the shoring unit on the alternate side can occur.

The wedge 27 is still in the usual securing means Position held and therefore cannot be lost.

By pulling out the wedge 28, the device can be turned in no time at all dismantle.

However, in order to limit the ability to tilt on all sides. are the Wall panels are equipped with claw hooks on their inside for hanging Ends of lying in a parallel plane to the spindles 1, preferably in a direct one The vicinity of these spindles 1 lapses. diagonally aligned chains 36 sur connection opposite wall panels arranged on different levels W. This connection is only effective when the spindle struts are inclined by 5 °. what the chains 36. with space parallelism and plane of the two with each other connected shoring units hang slack. Round steel chains are used. Such chains 36 have the advantage that by hooking another chain link in the claw hooks almost infinitely variable adjustment to different trench widths is possible.

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Claims (4)

Claims: 1. Shoring unit for stiffening the walls of trenches, Pipe trenches or the like, each with two opposite wall panels, the by means of spindle struts engaging the vertical straps of the wall panels elastically with one another are tensioned, the vertical straps with protruding over the long edge of the wall panel, Rigid connecting means are equipped, thereby g ek c n n z e i ne t that the elastic bracing of the spindle strut ends (1 '. 1 ") with the blackboard (W) achieved by the interposition of an elastic intermediate piece (26) and the bracing is designed as partial bracing. 2. Shoring unit according to claim 1, characterized in that the Partial bracing is designed as a wedge bracing. 3. Shoring unit according to claims 1 and 2, characterized in that that the one transverse slot (2S) of the spindle (1) penetrating the clamping wedge (27) on the Wall board (W) movably attacking retaining hooks (30) penetrated. 4. Shoring unit according to claim l, characterized in that the Blackboards (W) are equipped with claw hooks on their inside for hanging the ends of in a parallel plane to the spindles (1) lying, diagonally Chains (36) to connect each opposite and on different Wall panels arranged at heights (Wl where the diagonal length of the chains (36) limit the possible inclination due to the elastic bracing. The invention relates to a shoring unit for stiffening of the walls of construction trenches, pipe trenches or the like, with two opposite each other Wall panels, which are braced by spindle struts engaging the vertical straps of the wall panels are elastically clamped together, the vertical straps with over the longitudinal edge the blackboard protruding, rigid connecting means are equipped. A shoring unit of this type, however, without over the longitudinal edge of the Blackboard protruding connecting means is known from DE-OS 22 57 881: To achieve elastic tension between the wall panel and the spindle struts spring assemblies are used, which have an end cross bolt in the direction of a Load the bearing pan on the vertical belt side. The spring package is at medium height of the pin split, whereby the deflection movement with further cutting off the Dodge quarter-cylinder encompassing spring ends. Although according to the appropriate Spring direction of action a mainly vertically oriented elasticity of the spindle occurs, there should also be a resilience lying in the horizontal plane. To graduate the tension, the device has eccentric toggles arranged in pairs on. which more or less preload the spring assemblies resting on the spindle ends. The structural design is relatively complex and also prone to failure. aside from that there is a risk of a break in the spring assembly in the area of the stub axle Separation, as the connection is secured exclusively by the spring force is. at freestanding shoring unit, it cannot be completely ruled out that by a Overhang position of the wall panel the shoring unit vcrlicrt its composite. It is the object of the invention. a generic installation unit to be designed in such a way that it is simple to manufacture and in a way that is advantageous in terms of use. that, on the one hand, elastic bracing is achieved with the same effect on all sides, on the other hand, however, a secure connection of the shoring unit is given. This object is achieved by the invention specified in claim 1. The dependent claims 2 and 3 are advantageous developments of the Subject of the invention. As a result of such a configuration, a generic Be assembly unit created in particular of increased use and security value: Because13 the elastic bracing of the spindle strut ends with the wall panel by means of an intermediate layer achieved an elastic intermediate piece and the bracing as partial bracing is trained. the result is an elastic one that has the same effect in all directions Connection. This is of great practical importance when building an assembly in the trench lowers and create a tight connection to the existing shoring field want. For example, with the spoon of a cantsplechenden excavator falls alternately Move the shoring unit on the right and left in the direction of the trench and so close to it bring up the existing shoring. Instead of essentially relying on the restoring force the bracing means based connection of wall and strut. is the intermediate piece now simply integrated into the connection point by means of an intermediate layer. It therefore takes not to be assumed from expensive spring bodies. Rather, the required one is sufficient Body exhibiting elasticity. The means used are simpler than those used in Prior art springs used. A particularly cheap way of achieving this an elastic pre-tensioning or partial tensioning consists in the application of a Wedge bracing. The latter proves to be cheaper than having special pivoting levers Eccentric. These can easily be touched by the device or falling rock so inadvertently adjusted. There is also no need to arrange them in pairs Adjusting means. The further structural measure consists in this. that the one cross slit the spindle penetrating a clamping wedge which engages movably on the wall panel Haltehakcn penetrated This leads to unfavorable situations even in terms of strength still easily detachable connection between spindle and blackboard. To the part of the Civil engineering trade association specified values of the permissible inclination exactly and to limit damage-free for the shoring unit, the wall panels are on their Inside equipped with claw hooks for hanging the ends in parallel Level to the spindles, diagonal chains for connection in each case opposite wall panels arranged on different levels, where the diagonal length of the chains is that possible due to the elastic tension Limit inclination.