Trenching unit, trenching body and insert

Abstract

The invention relates to a trenching unit having at least two trenching bodies (10a, 10b), which each comprise an upper base plate (11), a lower base plate (12), and hollow columns (13a, 13b), which are arranged perpendicularly between the base plates (11, 12) and form column openings (14) in the base plates (11, 12), wherein the lower base plate (11) of the one trenching body (10a) and the upper base plate (12) of the other trenching body (10b) bear on one another in such a way that the column openings (14) of the two bearing base plates (11, 12) are arranged concentrically. It is characterized in that the trenching bodies (10a, 10b) are connected by at least one adapter (15), which comprises a bearing surface (16) and two insert profiles (17a, 17b), which are arranged on both sides of the bearing surface (16) and are connected thereto, wherein the bearing surface (16) is arranged between the bearing base plate (11, 12) and the insert profiles (17a, 17b) are inserted into two concentrically arranged column openings (14) of the bearing base plates (11, 12).

Claims

1. A trenching unit comprising at least two trenching bodies (10a, 10b), each of the at least two trenching bodies (10a, 10b) comprises an upper base plate (11), a lower base plate (12), and hollow columns (13a, 13b), the hollow columns (13a, 13b) are arranged perpendicularly between the upper and lower base plates (11, 12) and form column openings (14) in the upper and lower base plates (11, 12), wherein the lower base plate (11) of one of the at least two trenching bodies (10a 10b) and the upper base plate (12) of an another one of the at least two trenching bodies (10a 10b) bear on one another and the column openings (14) of the two bearing upper and lower base plates (11, 12) are arranged concentrically, the at least two trenching bodies (10a, 10b) are connected by at least one adapter (15), the at least one adapter (15) comprises a bearing surface (16) and two insert profiles (17a, 17b) that are arranged on both sides of the bearing surface (16) and are connected thereto, wherein the bearing surface (16) is arranged between the upper and lower base plates (11, 12) and the two insert profiles (17a, 17b) are inserted in a form-fitting manner into two concentrically arranged column openings (14) of the bearing upper and lower base plates (11, 12)), the two insert profiles (17a, 17b) each comprise a contact surface (20) that abuts an inner side (21) of the hollow columns, the contact surface (20) is contoured to the inner side (21) of the hollow columns.

2. The trenching unit of claim 1, wherein the insert profiles (17a, 17b) are formed symmetrically.

3. The trenching unit of claim 1, wherein the insert profiles (17a, 17b) each comprise multiple plug-in blocks (18).

4. The trenching unit of claim 3, wherein the plug-in blocks (18) are arranged in a cross shape.

5. The trenching unit of claim 4, wherein the plug-in blocks (18) each comprise reinforcing ribs (19a, 19b) arranged in a cross shape.

6. The trenching unit of claim 1, wherein the contour of the contact surfaces (20) is formed wavy.

7. The trenching unit of claim 1, wherein the contact surface (20) of the adapter (15) is formed substantially in the form of a ring (23), the external diameter of the ring (23) is larger than the diameter of the column openings (14).

8. The trenching unit of claim 7, wherein the plug-in blocks (18) are connected to the ring (23).

9. The trenching unit of claim 3, wherein the plug-in blocks (18) are connected to one another.

10. The trenching unit of claim 4, wherein the plug-in blocks (18) arranged in a cross shape are aligned with main ribs of the upper base plate (12) in at least two directions extending perpendicularly in relation to one another.

11. The trenching unit of claim 1, wherein multiple adapters (15) are connected to one another, wherein the position of the adapters (15) corresponds to the location of the column openings (13a, 13b).

12. An adapter for a trenching unit comprising at least two trenching bodies (10a, 10b), each of the at least two trenching bodies (10a, 10b) comprise an upper base plate (11), a lower base plate (12), and hollow columns (13a, 13b), the hollow columns (13a, 13b) are arranged perpendicularly between the upper and lower base plates (11, 12) and form column openings (14) in the upper and lower base plates (11, 12), wherein the adapter comprises a bearing surface (16) and two insert profiles (17a, 17b), the two insert profiles (17a, 17b) are arranged on both sides of the bearing surface (16) and are connected thereto, wherein the two insert profiles (17a, 17b) are insertable in a form-fitting manner into the hollow columns (13a, 13b) to connect the trenching bodies (10a, 10b) and the bearing surface (16) protrudes outward beyond the two insert profiles (17a, 17b), the two insert profiles (17a, 17b) each comprise a contact surface (20) that abuts an inner side (21) of the hollow columns, the contact surface (20) is contoured to the inner side (21) of the hollow columns.

Description

(1) In the figures

(2) FIG. 1 shows a perspective view of a lower base plate for a trenching body having multiple hollow columns;

(3) FIG. 2 shows a perspective view of an upper base plate for a trenching body having multiple hollow columns, which is connectable to the base plate according to FIG. 1 to form a trenching body;

(4) FIG. 3 shows a perspective view of multiple adapters according to one exemplary embodiment according to the invention, which is used for connecting multiple, in particular two trenching bodies;

(5) FIG. 4 shows a top view of an adapter according to FIG. 3;

(6) FIG. 5 shows a cross section through two trenching bodies which are connected at the base plates by an adapter;

(7) FIG. 6 shows the trenching bodies according to FIGS. 1, 2 and the adapters according to FIG. 3 during the connection of the base plates;

(8) FIG. 7 shows a section through the upper base plate having only one single insert profile for covering the column opening; and

(9) FIG. 8 shows a top view of the upper base plate of a trenching body made of multiple adapters, in which the plug-in blocks and the main ribs of the base plate align.

(10) In the following description, the same reference signs are used for identical and identically-acting parts.

(11) The base plates 11, 12 shown in FIGS. 1 and 2 form the base elements of a trenching body. The trenching body is a box-shaped body having grid-type boundary surfaces, through which water can flow into the trenching body. The trenching body can be wrapped in a known manner using a geotextile to prevent the penetration of sediments into the trenching system.

(12) A trenching system composed of such trenching bodies is used, on the one hand, as a block accumulator for precipitation water and, on the other hand, as a block infiltration for precipitation water. The basis of this system are the identical base plates shown in FIGS. 1, 2, which can be combined with one another in different ways. The upper base plate 11 is arranged on top in the laid state of the trenching system and the lower base plate 12 is arranged on the bottom. The base plates each comprise hollow columns 13a, 13b, which extend perpendicularly in relation to the base plates 11, 12 and are connected thereto. The hollow columns 13a, 13b form spacers, which establish the spacing of the base plates 11, 12 in relation to one another. For this purpose, the hollow columns 13a, 13b are placed one on another with the free ends thereof. The hollow columns 13a, 13b, also called pylons, are formed conical, wherein the smaller cross-sectional opening forms the free end and the larger cross-sectional opening forms the end of the respective hollow column 13a, 13b connected to the respective base plate 11, 12. The hollow columns 13a, 13b form column openings 14 in the respective base plate 11, 12, as can be seen well in FIG. 2.

(13) To increase the height of the trenching system, it is typical for multiple layers of trenching bodies 10a, 10b to be stacked one on top of another (see FIG. 5). In this case, a lower base plate 12 of the upper trenching body 10a comes into contact with an upper trenching plate 11 of the trenching body 10b located underneath.

(14) The invention begins here, which, as shown on the basis of the exemplary embodiment according to FIG. 3, improves the connection between the trenching bodies 10a, 10b stacked one on top of another.

(15) For this purpose, an adapter 15 is provided, which is shown in FIGS. 3, 4. The adapter 15 comprises a bearing surface 16 and two insert profiles 17a, 17b. As can be seen well in FIGS. 3 and 5, the insert profiles 17a, 17b are arranged on both sides of the bearing surface 16. In other words, the bearing surface 16 is located between the upper insert profile 17a and the lower insert profile 17b. The insert profiles 17a, 17b are designed to absorb the occurring horizontal loads in the (main) directions parallel to the main surfaces of the base bodies 11, 12. For this purpose, they have a cross-shaped structure having ribs, which follows the corresponding ribs of the base plates 11, 12. The bearing surface 16 extends in the circumferential direction between the insert profiles 17a, 17b. Moreover, the bearing surface 16 protrudes radially beyond the insert profile 17a, 17b. It is thus possible that the bearing surface 16 bears on the upper side of the respective base plate 11, 12 and is fixed by the weight of the upper trenching body.

(16) The insert profiles 17a, 17b are formed symmetrically and each comprise multiple plug-in blocks 18. The plug-in blocks 18 are used to establish the formfitting connection to the hollow columns 13a, 13b and/or column openings 14. The plug-in blocks 18 each comprise walls 23, which laterally delimit the plug-in blocks 18. As shown in FIG. 4, the plug-in blocks 18 are arranged in a cross shape, wherein four plug-in blocks 18 are arranged around a middle plug-in block 18. Other arrangements of the plug-in blocks 18 are possible. The plug-in blocks 18 are formed essentially cuboid. Other geometries of the individual plug-in blocks 18 are possible.

(17) The end faces of the plug-in blocks 18, i.e., the free ends of the plug-in blocks 18, each comprise a contact surface 20, which abuts the inner wall or the inner side 21 of the respective hollow column 13a, 13b in the installed state (see FIG. 5). Specifically, the contact surfaces 20 are formed wavy. Other geometries are also possible here. The contact surfaces 20 advantageously extend beyond the plug-in blocks 18, so that a surface pressure can be reduced in the region between the contact surfaces 20 and the inner sides 21 of the hollow columns 13a, 13b. In this manner, the occurring horizontal forces can be transmitted as a surface load instead of as a linear load. Larger forces can be transmitted due to the transmission of the horizontal forces as a surface load instead of as a linear load.

(18) First and second reinforcing ribs 19a, 19b are arranged in a cross shape between the walls 23 of the plug-in blocks 18.

(19) The bearing surface 20 is formed in the exemplary embodiment according to FIGS. 3, 4 as a ring 22, the external diameter of which is somewhat larger than the diameter of the column openings 14. The bearing surface 16 can thus bear on the respective base plate 11, 12 when the adapter 15 is inserted into the opening 14. The ring-shaped bearing surface 20 can comprise one or more recesses to provide guides for packing straps when packing, for example, on a pallet. The ribs of the insert profiles comprise complementary recesses or elevations to enable a simplified stacking capability of multiple adapters 15.

(20) The internal diameter of the ring 22 approximately corresponds to the internal diameter of the hollow columns 13a, 13b.

(21) As shown in FIG. 3, four identical adapters 15 are assembled to form a coherent composite, wherein the adapters 15 are connected to one another by webs. The composite can be installed uniformly. The individual adapters 15 are elastically connected to one another in this case to be able to compensate for possible tolerances of the base body per se and/or of the base body in the installation situation.

(22) It can be seen well in FIG. 5 that the lower base plate 12 of the upper trenching body 10a is connected to the upper base plate 11 of the lower trenching body 10b. The connection is performed by the above-described adapter 15, which is arranged in the column opening 14. In this case, the contact surface 20 of the plug-in block 18 abuts the inner wall 21 of the lower hollow column 13b. The two base plates 11, 12 are fixed in location and cannot slip because of the adapter part 15. The degree of engagement with the respective hollow columns 13a, 13b can be varied via the height of the adapter 15, wherein the conicity of the hollow columns 13a, 13b is to be taken into consideration with increasing height.

(23) As shown in FIG. 6, before the connection of the trenching bodies, the adapters 15 are inserted into the column openings 14, so that the insert profiles 17a are engaged with the column openings 14 and/or the hollow columns 13a (left illustration in FIG. 6). A further base plate, in the example according to FIG. 6 the lower base plate 12 of the upper trenching body 10a, is then placed on the adapters 15. For this purpose, the column openings 14 of the two base plates 11, 12 are aligned concentrically in relation to one another. The overall alignment of the two base plates 11, 12 is established precisely and securely by the location of the adapters 15.

(24) An alternative to the adapter 15 functioning as a connector is shown in FIG. 7. This adapter 15 is a cover, in which the adapter 15 only comprises a single insert profile 17a having plug-in blocks 18 on its lower side. The side walls 23 of the plug-in blocks 18 align with the main ribs 24 of the base plate (see FIG. 8). Specifically, the walls 23 align in two directions extending perpendicularly to one another, so that a maximum stability results in the main load directions. The arrangement of the walls 23 is possible both in the example according to FIG. 7 and also in the example according to FIGS. 3 to 6.

(25) The aligned arrangement is shown in FIG. 8, in which virtual lines are drawn along the main ribs 24. As a result, the walls 23 align with the main ribs 24 in both main directions of the base plate 11.

LIST OF REFERENCE SIGNS

(26) 10a first trenching body 10b second trenching body 11 upper base plate 12 lower base plate 13a upper hollow column 13b lower hollow column 14 column openings 15 adapter 16 bearing surface 17a upper insert profile 17b lower insert profile 18 plug-in blocks 19a first reinforcing ribs 19b second reinforcing rib 20 contact surfaces 21 inner side of the hollow column 22 ring 23 side walls of the plug-in blocks 24 main ribs