DE102017112379A1 - Double-walled installation pit made of wall elements - Google Patents

Abstract

The invention relates to a mounting pit (1), in particular a prefabricated assembly pit, comprising a one-piece or multi-part pit body (10), in particular made of steel, with a circumferential side wall (20) and a bottom (14), characterized in that at least one double-walled section of the side wall (20) comprises a plurality of interconnected wall elements (19). Furthermore, the invention relates in each case to a method for manufacturing and adjusting a mounting pit.

Description

The invention relates to a mounting pit according to the preamble of the claim 1 , a method for manufacturing such a mounting pit, and a method for adjusting such a mounting pit.

Assembly pits are used by workshops or manufacturing plants for the assembly, repair or maintenance of motor vehicles, rail vehicles, machinery or machine parts. The staff can work in a comfortable upright position under the appropriate vehicles and machines.

Conventional assembly pits are usually made on site. For this purpose, first outer and inner shuttering walls are placed, which are then filled with filling material, preferably with concrete. The setting up of these formwork or the production of conventional assembly pits thus requires a possibly long employment of a variety of partially different craftsmen on site, so that high production costs and long construction times occur.

These disadvantages can be avoided by manufacturer prefabricated assembly pits, so-called prefabricated assembly pits, with steel cassettes, which are used in a Bodenausnehmung on site. A mounting pit of this genus is for example from the document DE 4324339 A1 known.

In manufacturing, typically large and heavy steel parts, such as e.g. large-scale sheets for the side walls of the pit, moved and edited. For pits of different sizes, different sized steel parts must be cut or kept in stock. The load-bearing construction of prefabricated assembly pits is subjected to large and permanent loads after assembly, in particular by vehicles driving on the workshop or hall floor in which the mounting pit is embedded. Accordingly, it can come in such mounting pits buckling of the side walls or individual parts of the side walls.

Based on this prior art, the present invention seeks to provide a mounting pit, which is as easy to produce and at the same time as stable as possible. In particular, installation pits with different dimensions should be as variable as possible, simple and inexpensive to produce. In particular, a built-in mounting pit should be able to reliably remove the loads registered on the hall floor and in particular not laterally buckling.

This object is achieved by a mounting pit according to claim 1.

In particular, the object is achieved by a mounting pit, in particular precast mounting pit comprising a usable in a bottom recess one or more pit body, in particular made of steel, with a circumferential side wall and a bottom, characterized in that at least one double-walled trained portion of the side wall more comprises interconnected wall elements.

A portion of the sidewall is double-walled in that it comprises an inner wall and an outer wall which are particularly spaced apart from one another and in particular define an intermediate cavity into which a filling material, preferably hardenable filling material such as e.g. Concrete, can be filled. The side wall comprises, in particular, a plurality of double-walled sections and is preferably continuous or substantially continuous double-walled. The side wall may also comprise several non-contiguous double-walled sections.

In particular, the pit body delimits a pit interior which is accessible through a group opening formed on an upper side, wherein a side wall extends in height, in particular up to the region of the pit opening. In particular, the side wall extends around the pit interior, wherein a pit body can be composed of a plurality of mutually firmly connectable pit modules. In particular, the pit body has a cuboid basic shape, wherein the side wall is preferably double-walled along the longitudinal sides and end faces. In particular, the bottom of the pit body is double-walled, wherein cavities in the side wall and the bottom are preferably connected to each other. In particular, a plurality of wall elements are connected to one another in such a way that they form the side wall at least partially double-walled. The pit body and in particular the side wall and / or the wall elements are preferably made of steel, but may also be made of a similar stiff and in particular corrosion-resistant material. The wall elements are preferably welded together, but may also be releasably connected to each other. Preferably, the wall elements are prefabricated in one piece, in particular as one-piece parts. In particular, a double-walled portion of the side wall is self-supporting. The mounting pit according to the invention is used in particular for the assembly, repair or maintenance of vehicles.

A mounting pit according to the invention has the advantage that a double-walled section of a side wall, or a continuous double-walled side wall, has a high structural rigidity, in particular against lateral buckling. At the same time, a side wall comprising or consisting of a plurality of interconnected wall elements is easy to manufacture because the wall elements can be easily and inexpensively manufactured as single parts due to their smaller size, and because of their relatively light weight, especially in prefabrication of the pit body , are easy to handle. In addition, mounting pits of various sizes, in particular different widths or lengths, can be manufactured variably by connecting a suitable number of wall elements, preferably of standardized dimensions, to form a side wall.

In an advantageous development of the invention, a wall element in each case forms an intermediate wall of the side wall. In particular, the intermediate wall connects the inner wall and the outer wall of the side wall to each other. Preferably, an intermediate wall extends substantially perpendicular to the outer or inner wall, wherein a wall element is arranged in particular in the T-joint to the inner or outer wall. The intermediate wall may also include an acute angle with the outer or inner wall. The intermediate walls are preferably made of metal, in particular steel. The partition walls extend in a height direction preferably into the region of the pit opening, or up to a pit edge, wherein the intermediate walls may have protruding head elements on an upper side. Partitions have the advantage that a double-walled portion of the side wall is stiffened, especially against lateral buckling.

In an advantageous development of the invention, a plurality of wall elements each bound one wall chamber at least partially, in particular together with an inner wall and / or an outer wall of the side wall. In particular, a wall chamber has a hollow profile which is preferably closed in cross-section. In particular, the intermediate walls divide the side wall, in particular the cavity between an inner and an outer wall, in wall chambers. A wall chamber is delimited in particular by two partitions as well as an inner wall and an outer wall. A wall chamber may be at least partially covered with insulating material, e.g. Dämmschaum or insulating mats, be filled, for example, to prevent condensation on the inner wall. Wall chambers have the advantage that they stiffen the structure of the side wall. The wall chambers may be open or closed at the bottom, ie at the side facing the bottom recess. Preferably, the bottom of the pit body extends to the outer wall and closes the wall chambers on its underside. In the wall chambers, or individual wall chambers, a curing filling material such as concrete can be filled. For example, lightweight concrete, preferably having a high flowability, such as, for example, a lightweight concrete of the consistency class F5 / 6 and a compressive strength class C20 / 25, is suitable as the curing filling material. Alternatively, the wall chambers are at least partially open on their underside. Such wall chambers are preferably designed to be self-supporting and can be filled with a non-hardening filling material, in particular a bulk material, for example soil, gravel, sand or similar excavated soil. Such an embodiment has the advantage that the wall chambers are emptied again, in particular by a flushing of the filling material down, and the mounting pit is thereby removable, displaced or expandable.

In one development of the invention, at least a portion of the outer wall of the side wall is formed from a plurality of interconnected wall elements. In particular, adjacent wall elements may overlap. In particular, a plurality of wall elements are connected to a one-piece inner wall along a portion of the side wall, wherein the inner wall is in particular a steel plate or a steel sheet. This has the advantage that the inner wall has a uniform and smooth surface, which is particularly well paintable. In addition, such an inner surface is sealed, in particular waterproof. In particular, welded joints for connecting the wall elements to an outer wall need not necessarily be aftertreated, in particular sanded off or polished.

In an alternative development of the invention, at least one section of the inner wall of the side wall is formed from a plurality of interconnected wall elements. In particular, adjacent wall elements may overlap. In particular, a plurality of wall elements are connected to a one-piece outer wall along a portion of the side wall, wherein the outer wall is in particular a steel plate or a steel sheet. Has the advantage that the outer wall is tight, in particular waterproof.

According to the invention, however, embodiments are also included, in which the outer wall and the inner wall of a portion of the side wall of a plurality of interconnected Wall elements, in particular the same wall elements are formed. For example, a side wall, in particular juxtaposed, wall elements can be constructed, which are designed as Z-profiles or U-profiles.

In an advantageous embodiment of the invention, the wall elements are angled, preferably as L-profiles, in particular as a simple angled side wall elements and / or as multiple, in particular two and / or three times, angled corner wall elements formed. A corner wall element is preferably connected to a front side inner wall and a longitudinal side outer wall. A simple angled wall element has in particular two legs, which enclose an angle between them, in particular bending angle, wherein the legs can have the same or different leg lengths. In such a cross-sectional as L-profile, or angle profile, formed wall element, one leg forms an intermediate wall and the other leg preferably forms part of the inner or outer wall of the side wall. A multi-angled wall element has in cross-section a plurality of mutually angled profile sections, the same or different angles, in particular bending angle, together, wherein the profile sections may have the same or different lengths. In particular, a multi-angled wall element forms a corner portion of the side wall of double-walled, wherein in particular two adjacent profile sections form part of the outer wall of the side wall and at least one further profile section forms an intermediate wall of the side wall. Preferably, legs or profile sections are angled at right angles to each other. Angled wall elements have the advantage that they are easy and inexpensive to produce, in particular by forming, in particular bending, of originally flat wall elements, in particular sheets, preferably steel sheets, which are e.g. a wall thickness between 1 to 5 mm, preferably of about 3 mm, have.

In an advantageous development of the invention, the intermediate walls of the wall elements have at least one passage opening, wherein in particular a plurality of passage openings are arranged vertically one above the other. In particular, the passage openings are spaced apart in the height direction. In particular, the intermediate walls can also be formed as perforated, in particular as perforated plates, sections of, in particular angled, wall elements. Through-holes have the advantage that the curable filling material filled in the double-walled side wall, in particular in the wall chambers, e.g. Lightweight concrete, better along the side wall, in particular between the wall chambers, can distribute. This results in a more stable connection of the filling material with the side wall and on the other hand a shorter production time.

In a preferred embodiment of the invention, the wall elements are welded together, in particular by means of at least one point, step, - and / or continuous weld, preferably along a joint between two wall elements in the height direction. Preferably, two wall elements arranged next to one another abut an outer wall, whereby they are welded together in sections or continuously along the joint. Only in sections, in particular pointwise or stepwise, executed welded joints reduce the number of required welds and shorten the production time. Fusion welding techniques can be used. In particular, for a wall element, at least one weld joint, preferably a fillet weld, is provided at a T-joint between the portion of the wall element forming an intermediate wall and at least one further weld joint, preferably an I or V seam, at an obtuse joint between the two - or outer wall forming portions of two adjacent wall elements. In the case of overlapping wall elements, pressure welding methods, in particular spot or seam welding, can be used. Welded together wall elements guarantee high rigidity of the double-walled side wall.

In an advantageous embodiment of the invention, a wall element in an upper region, in particular on an intermediate wall, on a head element which projects towards the interior wall of the pit body with respect to the inner wall, wherein the head element preferably has a passage opening. The passage opening is preferably arranged above the double-walled region of the side wall. The head element can be made in one piece with the wall element, or attached thereto, in particular welded. In particular, a head element extends as far as the region of the pit opening or up to a pit edge, in particular beyond the double-walled region of the side wall. Preferably, with a head element, an edge profile, preferably U-shaped or L-shaped, firmly connected, in particular welded thereto, wherein the edge profile in particular rotates around the pit opening and forms a pit edge. An edge profile can have a stiffening effect. In addition, a pit cover, in particular a roller cover, can be mounted in an edge profile.

In an advantageous development of the invention, at least one reinforcing rod is provided which extends through the passage opening of at least one head element. In particular, at least one reinforcing bar extends along the pit opening of the pit body. A reinforcing rod preferably extends over a plurality of intermediate walls, in particular wall chambers, away, in particular along the longitudinal and / or end sides of the side wall. Preferably, a total of four straight reinforcing bars are provided, namely one each along the two end and long sides. It is also conceivable for a reinforcing bar to run along the entire side wall, in particular around the corners of the side wall, wherein a reinforcing bar can be composed of sections connected to one another. In particular, the reinforcing bar runs at the height of the pit opening or a pit edge. It can be provided several, in particular parallel to each other, reinforcing rods. In particular, a reinforcing rod is adapted to provide a connection between the pit body, in particular the side wall, and a hall floor, in which the mounting pit is embedded. In a preferred embodiment, the reinforcing rod is made of structural steel or a comparable material, in particular metal or a metal alloy, and has, for example, a diameter of about 10 to 16 mm, particularly preferably about 12 mm. A reinforcing rod made of structural steel is readily available and has a high stability, in particular strength, and corrosion resistance. Usually, a hall or workshop floor has a floor slab made of concrete, which is usually provided with a reinforcement or reinforcement of structural steel. The invention is not limited to a hall floor made of concrete. In particular, the reinforcement of a hall floor can be connected to the reinforcing rod of the pit body. For example, the reinforcing rod is attached to the reinforcement of the hall floor with wire or by welding. This has the advantage that a sufficiently strong fixation with conventional building material and construction methods is achieved in a quick and easy way. The pit body of the mounting pit according to the invention can be firmly connected to the reinforcement of the hall floor by means of at least one Armierungsstabs, which is preferably mounted in the upper region of the side wall of the pit body. This way, the most rigid possible connection between the hall floor and the mounting pit and thus a good load transfer of the hall floor over the pit body in the underground guaranteed. By a reinforcing rod, the pit body is stabilized in particular in the horizontal, but also in the vertical direction, and prevents buckling of the side walls or individual parts of the side walls after installation of the mounting pit.

In an advantageous development of the invention, the reinforcing rod is connected in an edge region of the passage opening, preferably on an inner surface of the passage opening, by a welded connection to the head element. Preferably, the reinforcing bar is fastened in each case at the upper or lower region of a, for example circular, through opening of a head element. This results in a more stable connection than when the reinforcing bar is inserted only in the through holes. By pouring the intermediate walls, or filling the wall chambers, with curable filling material, such as. Lightweight concrete, on the one hand and the mechanical connection of the intermediate walls or wall chambers by a reinforcing rod on the other hand, the pit body is stabilized.

In a preferred embodiment, there is an expansion joint between the pit edge of the pit opening and the hall floor. This expansion joint allows temperature-induced expansion of the pit edge made of steel compared to the concrete floor of the hall. Preferably, the expansion joint is filled by a permanently elastic plastic, such as a permanently elastic plastic from the polymers usually used.

In addition, the object is achieved by a method for manufacturing a mounting pit according to claim 12.

• - Herstellen mehrerer ebener Wandelemente, vorzugsweise aus Stahlblech;
• - Biegen der Wandelemente entlang mindestens einer Biegelinie;
• - Verbinden, vorzugsweise Verschweißen, der Wandelemente miteinander derart, dass die Wandelemente zumindest einen Abschnitt einer Seitenwand eines Grubenkörpers doppelwandig ausbilden, insbesondere unter Ausbildung von Wandkammern.

In particular, the object is achieved by a method for producing a mounting pit, in particular a mounting pit according to the invention, comprising the following steps:

• - Making a plurality of planar wall elements, preferably made of sheet steel;
• Bending the wall elements along at least one bend line;
• - Connect, preferably welding, the wall elements together such that the wall elements form at least a portion of a side wall of a pit body double-walled, in particular to form wall chambers.

In particular, wall elements which are angled, in particular rolled, are produced by bending along bend lines provided angled wall elements. In particular, sidewall elements, preferably as simply angled wall elements, in particular L-profiles, and corner wall elements, preferably as double or triple angled wall elements, are produced by bending along one, two or three bending lines. In particular, the bending lines run parallel to each other. There are others, not necessarily be provided parallel, bending lines and more complex angled wall elements are generated. In addition to bending additional processing steps for the wall elements may be provided. In one embodiment, first of all a section of a side wall is produced in a single-walled manner, in particular consisting of an inner or outer wall, and then by connecting a plurality of angled wall elements to one another, and in particular to the inner or outer wall, this section of the side wall is double-walled. Several prefabricated sections of double-walled side walls can be assembled to form a pit body.

The method has similar advantages as have already been described in connection with the mounting pit according to the invention. The method may further implement some or all of the process features described in the assembly pit context. In particular, wall elements are easy to produce in this way, especially as relatively small and easy to handle sub-elements that can be prefabricated and well stored to be variable depending on the desired dimensions of the mounting pit to a double-walled side wall of a pit body assembled. In this way, the inventive method allows easy production of mounting pits.

An advantageous development of the manufacturing method according to the invention comprises producing in each case at least one passage opening in the wall elements, in particular in a region of the wall element which is provided to form an intermediate wall of the side wall after bending. Through holes can be made for example by punching or laser cutting. Preferably, head elements are attached to the tops of the intermediate walls, in particular welded. However, it is also possible to produce wall elements with head elements in one piece, e.g. by corresponding cutting of flat sheet metal parts under formation of the head element and subsequent bending along a bending line.

An advantageous development of the manufacturing method according to the invention comprises attaching a reinforcing rod to a wall element, preferably through a through opening, preferably through a through opening of a head element, the wall element, and in particular the welding of the reinforcing rod with the head element.

In particular, in the assembled state of the mounting pit are a pit opening, head elements of the intermediate walls with through openings for the reinforcing rod extending therethrough and the intended hall floor approximately in one plane. Accordingly, a complete filling of the wall chambers of the side wall with a filling material is possible, while the head elements of the intermediate walls with their through openings for the penetrating Armierungsstab lie at a higher level and initially remain free. Subsequently, the reinforcing bar can be attached and connected to the reinforcement of the hall floor. Then the hall floor of the workshop can be poured, which then also covers or includes the head elements of the intermediate walls with their through openings and the penetrating Armierungsstab.

In addition, the object is achieved by a method for adjusting a mounting pit according to claim 15.

• - Ausrichten eines Grubenkörpers einer Montagegrube, der in eine Bodenausnehmung mit einer Bodenplatte eingesetzt ist, in eine Fixierposition mittels mindestens einer hydraulischen Hebevorrichtung;
• - Anschweißen von Stützelementen an einer Seitenwand des Grubenkörpers, insbesondere an einer Außenwand einer zumindest abschnittsweise doppelwandig ausgebildeten Seitenwand;
• - Befestigen, insbesondere Verschrauben, der Stützelemente an/mit der Bodenplatte;
• - Entfernen der hydraulischen Hebevorrichtung.

In particular, we achieved the object by a method for adjusting a mounting pit, in particular a mounting pit according to the invention, comprising the following steps:

• - Aligning a pit body of a mounting pit, which is inserted into a bottom recess with a bottom plate, in a fixing position by means of at least one hydraulic lifting device;
• - Welding of support elements on a side wall of the pit body, in particular on an outer wall of an at least partially double-walled side wall;
• - Attaching, in particular screwing, the support elements on / with the bottom plate;
• - Remove the hydraulic lifting device.

In particular, the pit body inserted in the bottom recess on the bottom plate is aligned with a hydraulic lifting device, which preferably comprises a hydraulic cylinder. For this purpose, on the side wall projecting support elements, such as angle elements, be attached, which engages under the lifting device. The lifting device could also intervene directly under the bottom of the pit body. Preferably, a hydraulic jack is placed on at least three corners of the pit body on the bottom plate. In particular, bores are made in the bottom plate at locations where the pit body is to be attached to the bottom plate. Once the pit body is aligned, support elements can be welded to the outer walls of the pit body so that they rest on the bottom plate. In particular, the pit body is screwed on the support elements with the bottom plate, in particular pegged. A Attachment to the bottom plate counteracts possible buoyancy forces, for example, when filling the Bodenausnehmung with liquid concrete or when the water level should rise to the mounting pit. In this way, the mounting pit is fixed in an aligned position and held by the support elements permanently in this desired position. Subsequently, the lifting device can be removed from the Bodenausnehmung so that the remaining part of the Bodenausnehmung outside the pit body can be filled with excavated material. In particular, the bottom gap is sealed with lean concrete. A hydraulic lifting device has the advantage that the adjustment of a mounting group is very accurate.

• 1: eine schematische Draufsicht auf eine erste Ausführungsform einer erfindungsgemäßen Montagegrube mit einer umlaufend doppelwandig ausgebildeten Seitenwand ohne Darstellung der Schweißverbindungen;
• 2a: eine schematische Schnittansicht des Detailausschnitts C einer Seitenwand gemäß der Ausführungsform gemäß 1 entlang der in 2b angezeigten Schnittlinie D-D mit Darstellung der Schweißverbindungen;
• 2b: eine schematische Seitenansicht des Detailausschnitts C der Ausführungsform gemäß 1;
• 3a: eine schematische Ansicht eines ungebogenen Wandelements;
• 3b: eine schematische Ansicht eines ungebogenen Wandelements mit einem Kopfelement;
• 4a: eine schematische Draufsicht auf einen Abschnitt einer doppelwandigen Seitenwand gemäß einer zweiten Ausführungsform einer erfindungsgemäßen Montagegrube mit einer aus Wandelementen gebildeten Außenwand;
• 4b: eine schematische Draufsicht auf einen Abschnitt einer doppelwandigen Seitenwand gemäß einer dritten Ausführungsform einer erfindungsgemäßen Montagegrube mit einer aus Wandelementen gebildeten Innenwand;
• 4c: eine schematische Draufsicht auf einen Abschnitt einer Seitenwand gemäß einer vierten Ausführungsform einer erfindungsgemäßen Montagegrube mit einer aus U-förmigen Wandelementen doppelwandig ausgebildeten Seitenwand;
• 4d: eine schematische Draufsicht auf einen Abschnitt einer Seitenwand gemäß einer fünften Ausführungsform einer erfindungsgemäßen Montagegrube mit einer aus Z-förmigen Wandelementen doppelwandig ausgebildeten Seitenwand;
• 5: eine schematische Querschnittsansicht einer sechsten Ausführungsform einer erfindungsgemäßen Montagegrube mit einem Armierungsstab.

Embodiments of the invention are explained below with reference to the drawings. Hereby show:

• 1 a schematic plan view of a first embodiment of a mounting pit according to the invention with a circumferentially double-walled side wall without representation of the welded joints;
• 2a FIG. 2 is a schematic sectional view of the detail C of a side wall according to the embodiment according to FIG 1 along the in 2 B displayed section line DD showing the welded joints;
• 2 B FIG. 2 is a schematic side view of detail C of the embodiment according to FIG 1 ;
• 3a a schematic view of an unbent wall element;
• 3b a schematic view of an unbent wall element with a head element;
• 4a FIG. 2: shows a schematic plan view of a section of a double-walled side wall according to a second embodiment of a mounting pit according to the invention with an outer wall formed from wall elements; FIG.
• 4b FIG. 2 is a schematic plan view of a section of a double-walled side wall according to a third embodiment of a mounting pit according to the invention with an inner wall formed from wall elements; FIG.
• 4c : a schematic top view of a portion of a side wall according to a fourth embodiment of a mounting pit according to the invention with a double-walled from U-shaped wall elements side wall;
• 4d FIG. 2: shows a schematic plan view of a section of a side wall according to a fifth embodiment of a mounting pit according to the invention with a side wall formed as a double wall of Z-shaped wall elements; FIG.
• 5 : A schematic cross-sectional view of a sixth embodiment of a mounting pit according to the invention with a reinforcing rod.

In the following description of the invention, the same reference numerals are used for the same and like elements.

1 shows a schematic plan view, or a horizontal cross-sectional view, on a mounting pit according to the invention 1 , designed here as prefabricated assembly pit, for assembly, repair or maintenance of vehicles. The pit body 10 the mounting pit 1 is symmetrical to a longitudinal axis of symmetry A built up. The side wall 20 limits a pit opening 21 with a rectangular floor plan with two front and two long sides and is designed here double-walled. The side wall 20 is double-walled with an inner wall 12 and an outer wall 13 built, with the inner wall 12 along the long sides as a continuous longitudinal side inner wall 121 and along the front side as a continuous front side inner wall 122 is trained. The of the inner wall 12 spaced longitudinal side outer walls 131 and face exterior walls 132 are by angled wall elements 19 educated. Sidewall elements 16 and corner wall elements 17 become common as wall elements 19 designated. The double-walled side wall 20 preferably has a thickness of 10 to 40 cm, preferably of 20 to 30 cm, more preferably of about 25 cm, wherein the wall thickness both in the height direction, as well as along the circumference of the pit opening 21 can vary. In particular, the wall thickness along the end faces may be different than the wall thickness along the longitudinal sides. The pit body 10 can also be constructed asymmetrically, in particular with regard to the arrangement of the wall elements 19 ,

Along the front and long sides are around a bending angle α simply angled sidewall elements 16 arranged, which are formed as L-profiles, wherein a first leg intermediate walls 15 and a second leg portions of the longitudinal side outer wall 131 forms. The partitions 15 divide the double-walled side wall 20 in wall chambers 11 , Each at the corners of the side wall 20 are multiple angled corner wall elements 17 arranged, with a double-angled on one side, namely a first and second bending angle β ₁ respectively. β ₂ curved, and on the other side triple angled, namely a first, second and third bending angle β ₁ . β ₂ respectively. β ₃ curved, corner wall elements 17 disposed are. Here, the bending angles are all 90 °, so that the intermediate walls 15 vertically, ie in the T-joint, on the inner wall 12 to meet. But there are also other, in particular varying, bending angle possible, so that partitions 15 obliquely on the inner wall 12 or the outer wall 13 can meet. At the end faces in each case a planar middle wall element 18 arranged. The thickness of a wall element 19 , which preferably consists of bent sheet steel, for example, 1 to 5 mm, preferably about 3 mm. The partitions 15 extend each height starting from the ground 14 into the area of the pit opening 21 , or to the pit edge 23 , the z. B. by a shaped as a U-shaped peripheral edge profile 24 is formed (see 5 ). The partitions are arranged, for example, at intervals of 40 to 60 cm, preferably of about 50 cm. Accordingly, the two leg lengths of a shaped as an L-profile side wall element 16 eg about 25 cm for the partition 15 and about 50 cm for the outside wall 13 ,

In 1 are the wall elements 19 via welded joints with each other and with the longitudinal side inner walls 121 and frontal interior walls 122 connected, wherein the welded joints in 1 are not shown, the structure of the double-walled side wall 20 from wall elements 19 to illustrate. The wall chambers 11 have a stiffening effect on the pit body 10 and can be filled from above with a hardening filling material, such as lightweight concrete, eg consistency class F5 / 6 and a compressive strength class C20 / 25. The filling with a non-hardening filling material, such as earth, gravel or sand, is conceivable, wherein the wall chambers 11 then preferably open at the bottom to be able to flush out the filler as needed.

The 2a and 2 B show a section of a double-walled sidewall 20 according to the detail C from 1 with three interconnected wall chambers 11 , The long side inside wall 121 Here is a continuous steel plate, in particular a steel sheet, to the sidewall elements 16 by means of welded joints 43 , here as a double fillet weld between each an intermediate wall 15 and the longitudinal side inner wall 121 is executed. On the outside of the longitudinal side outer wall 131 are abutting sidewall elements 16 by first and second welded joints 42 . 43 , which are here executed for example as I-seam or V-seam, connected to each other. The welded joints 41 . 42 . 43 preferably do not extend over the entire height of the side wall 20 but are only partially, in particular punctiform, executed in the vertical direction, so that on the one hand sufficient mechanical stability of the welded construction and on the other hand the shortest possible manufacturing time is ensured by a reduced number of welded joints.

In the 3a and 3b is a wall element 19 in the unbent, ie flat state, shown in FIG 3b in an upper region of the wall element 19 a head element 22 attached to it, in particular welded, is. The wall elements originally produced as flat steel sheets 19 be along at least one bendline B each bent by a bending angle. For a simply angled wall element 19 , For example, a shaped as an L-profile side wall element 16 , is a single bendline B provided, which is the wall element 19 divided into two areas, one of which is an intermediate wall 15 and the other part of the outer wall 13 should form. In the area of the partition 15 are, here circular, through holes 151 provided, which are arranged spaced apart in the height direction and passages between the wall chambers 11 create, in particular to the flow of filled filling material, in particular of liquid concrete, from a wall chamber 11 to allow in the adjacent, before the filler cured and sidewall 20 stabilized. The passage openings 151 For example, by punching or laser cutting, preferably before the assembly of the pit body 10 , in the flat wall elements 19 be generated. For a multi-angled wall element 19 , For example, a corner wall element 17 , would be several parallel bending lines B provided, which is the wall element 19 would divide into several areas, each corresponding to a profile section. A head element 22 has a circular passage opening 221 with an annular inner surface 222 for passing and fastening, in particular welding, a reinforcing rod 30 (please refer 5 ) on. The passage opening 221 is approximately at the height of the pit opening 21 or the pit edge 24 intended.

In the 4a to 4d Figure 4 illustrates four different embodiments of a portion of a double-walled sidewall 20 shown. The angled wall elements 19 are preferably by forming from an originally flat steel sheet, namely preferably by bending along one or more bending lines B , manufactured.

In the embodiment according to 4a , which in principle of the embodiment according to the 1 . 2a and 2 B corresponds, a steel sheet forms the inner wall 12 while wall elements fixedly connected together 19 with L-shaped cross section the outer wall 13 and the wall chambers 11 form.

In the embodiment according to 4b forms, inversely as in 4a , a sheet steel the outer wall 13 while wall elements fixedly connected together 19 with L-shaped cross section, the inner wall 12 and the wall chambers 11 form.

In the embodiments according to the 4c and 4d is each the inner wall 12 and the outer wall 13 through wall elements 19 formed with U-shaped or Z-shaped cross-section.

In the embodiment according to 5 is the reinforcement 7 or reinforcement of the hall floor 2 on the reinforcing rod 30 via a welded joint, here welding points, attached, whereby a conventional connection by means of a wire winding is conceivable. In the area of the passage opening 221 is the reinforcing rod 30 each with an intermediate wall 15 welded, and preferably in each case at the upper end of the circular passage opening 221 , Preferably, both the Armierungsstab 30 as well as the reinforcement of the hall floor 2 of mild steel, the diameter of the reinforcing bar 30 is about 12 mm. Between the pit edge 24 the pit opening 21 and the hall floor 2 is an expansion joint 9 intended.

The inventive method for adjusting a mounting pit 1 is subsequently related to 5 explained. A mounting pit 1 is usually set up in an assembly shop or workshop by first having a floor recess 3 is dug, a horizontal base plate 4 in the bottom recess 3 is poured and then a prefabricated mounting pit 1 in the bottom recess 3 is used. The assembly group 1 gets on the bottom plate 4 adjusted or aligned. On the outside of the assembly group 1 becomes the remaining part of the bottom recess 3 eg filled with concrete or excavated material and finally a hall floor 2 poured, with the pit opening 21 the mounting pit 1 flush.

In 5 is on the left side of the mounting pit 1 the bottom recess 3 not yet filled, while on the right side an already filled recess area 8th with a part of the hall floor arranged above it 2 is shown. In the adjustment method according to the invention is in the Bodenausnehmung 3 on the bottom plate 4 used pit bodies 10 with a hydraulic lifting device (not shown), which in particular comprises a hydraulic cylinder aligned. This can be done on the sidewall 20 protruding support elements, for example, angle elements, be attached, which engages under the lifting device. The lifting device could also be directly under the ground 14 of the pit body 10 intervention. When the pit body 10 is aligned, support elements 5 on the side wall 20 welded so that they have a lower end on the bottom plate 4 rest. The support elements 5 are here designed as angled elements, which have screws 6 with the bottom plate 4 are bolted. support elements 5 are at least at the corners of the pit body 10 , but preferably at intervals of 1.0 to 1.5 m in the longitudinal direction, arranged.

It should be noted at this point that all aspects of the invention described above taken alone and in any combination, in particular the details shown in the drawings, as essential for the invention claimed. The same applies to the described method steps. Variations thereof are familiar to the person skilled in the art.

LIST OF REFERENCE NUMBERS

1

inspection pit

2

shop floor

3

bottom recess

4

baseplate

5

support elements

6

screw

7

reinforcement

8th

filled recess area

9

expansion

10

pit body

11

wall chamber

12

inner wall

13

outer wall

14

ground

15

partition

16

Side wall member

17

Eckwandelement

18

Center wall element

19

wall element

20

Side wall

21

pit opening

22

header

23

pit edge

24

edge profile

30

reinforcement bar

41

welded joint

42

first weld

43

second weld joint

121

Long side inner wall

122

Front side inner wall

131

Longitudinal side exterior wall

132

Front side outer wall

151

Through opening

221

Through opening

222

palm

A

axis of symmetry

B

bending edge

α

bending angle

β ₁

first bending angle

β ₂

second bending angle

β ₃

third bending angle

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 4324339 A1 [0004]

Claims (15)

Installation pit (1), in particular prefabricated assembly pit, comprising a one or more parts pit body (10), in particular made of steel, with a circumferential side wall (20) and a bottom (14), characterized in that at least one double-walled formed portion of the side wall (20) comprises a plurality of interconnected wall elements (19). Installation pit (1) according to Claim 1 , characterized in that a wall element (19) in each case forms an intermediate wall (15) of the side wall (20). Installation pit (1) according to Claim 1 or 2 , characterized in that a plurality of wall elements (19) each at least partially define a wall chamber (11), in particular together with an inner wall (12) and / or an outer wall (13) of the side wall (20). Installation pit (1) according to Claim 1 to 3 , characterized in that at least a portion of the outer wall (13) of the side wall (20) is formed of a plurality of interconnected wall elements (19). Installation pit (1) according to Claim 1 to 3 , characterized in that at least a portion of the inner wall (12) of the side wall (20) is formed of a plurality of interconnected wall elements (19). Assembly pit (1) according to one of the preceding claims, characterized in that the wall elements (19) angled, preferably as L-profiles, in particular as a simple angled side wall elements (16) and / or as a multiple, in particular two and / or three times, angled Corner wall elements (17) are formed. Mounting pit (1) according to one of the preceding claims, characterized in that the intermediate walls (15) of the wall elements (19) have at least one passage opening (151), wherein in particular a plurality of passage openings (151) are arranged vertically one above the other. Assembly pit (1) according to one of the preceding claims, characterized in that the wall elements (19) are welded together, in particular by means of at least one point, step, and / or continuous welded joint, preferably along a joint between two wall elements (19) in height direction. Mounting pit (1) according to one of the preceding claims, characterized in that a wall element (19) in an upper region, in particular on an intermediate wall (15), a head element (22), with respect to the inner wall (12) to the interior of the pit body (10) protrudes, wherein the head member (22) preferably has a through hole (221). Assembly pit (1) according to one of the preceding claims, characterized in that at least one reinforcing bar (30) is provided which extends through the passage opening (221) of at least one head element (22). Assembly pit (1) according to one of the preceding claims, characterized in that the reinforcing bar (30) in an edge region of the through hole (221), preferably on an inner surface (222) of the through hole (221), by a welded connection (31) with the head element (22) is connected. Method for producing a mounting pit, in particular according to one of Claims 1 to 11 comprising the following steps: - producing a plurality of planar wall elements (19), preferably made of sheet steel; Bending the wall elements (19) along at least one bending line (B); - Joining, preferably welding, the wall elements (19) with each other such that the wall elements (19) at least a portion of a side wall (20) of a pit body (10) double-walled, in particular to form wall chambers (11). Method according to Claim 12 characterized by producing in each case at least one passage opening (151) in the wall elements (19), in particular in a region of the wall element (19) which is provided to form an intermediate wall (15) of the side wall (20) after bending. Method according to Claim 12 or 13 characterized by attaching a reinforcing rod (30) to a wall element (19), preferably through a through opening (151, 221), preferably through a through opening (221) of a head element (22), of the wall element (19), and in particular welding the latter Armierungsstabs (30) with the head element (22). Method for adjusting a mounting pit, in particular according to one of Claims 1 to 11 comprising the following steps: - aligning a pit body (10) of a mounting pit (1), which is inserted in a bottom recess (3) with a bottom plate (4), into a fixing position by means of at least one hydraulic lifting device; - Welding support elements (5) on a side wall (20) of the pit body (10), in particular on an outer wall (13) of a side wall (20) formed at least in sections with double walls; - Fixing, in particular screwing, the support elements (5) on / with the bottom plate (4); - Remove the hydraulic lifting device.

Images