Mudguard for insertion into a shaft

Abstract

In the case of a dirt trap, in particular a slotted bucket (10), for insertion into a shaft below a shaft cover, in particular a grate, with a bowl-shaped or bucket-shaped body (11) for retaining coarser contaminants, which has at least one side wall (12) and a bottom (13), and with a retaining element (14) projecting laterally beyond the body (11) for insertion into a bearing in the shaft, material and energy can be saved in its manufacture by connecting the side wall (12), bottom (13) and / or retaining element (21) to each other in an overlapping manner using a mechanical joining process without auxiliary joining elements.

Description

[0001] The invention relates to a dirt trap, in particular a slotted bucket, for insertion into a shaft below a shaft cover, in particular a grate, comprising a bowl-shaped or bucket-shaped body for retaining coarser contaminants, having at least one side wall and a bottom, and a retaining element projecting laterally beyond the body for insertion into a bearing in the shaft. The invention also relates to a method for manufacturing a dirt trap, in particular a slotted bucket.

[0002] Below manhole covers, such as grates, debris traps like slotted buckets are generally used in sewer systems. The construction of slotted buckets is fundamentally regulated by the standard DIN 4052 (Part 4). The individual components of a debris trap, especially a slotted bucket, are made of sheet steel and welded together, then galvanized, for example, by hot-dip galvanizing or hot-dip galvanizing. This is relatively complex and expensive, particularly due to the high energy consumption.

[0003] In areas where slotted buckets according to DIN standards are not necessarily required, there is a great need for more cost-effective slotted buckets.

[0004] The invention is based on the problem of providing a dirt catcher, in particular a slotted bucket, which can be manufactured with less material and energy expenditure.

[0005] The problem is solved in a mudguard of the type mentioned above by connecting the side wall, base, and / or retaining element to each other in an overlapping manner using a mechanical joining process that does not require any auxiliary components. Alternatively, the problem is solved by a method of the type mentioned above in which galvanized sheet steel is provided, at least one side wall, the base, and / or the retaining element are manufactured from the galvanized sheet steel, and the side wall, base, and / or retaining element are connected to each other in an overlapping manner using a mechanical joining process that does not require any auxiliary components.

[0006] The advantage of the invention is that the side wall, base, and / or retaining element do not need to be welded together. Therefore, relatively thin sheet steel can be used, saving material. At the same time, it is possible to use pre-galvanized sheet steel, which is produced inexpensively on a relatively large scale. This allows for significant material savings, while also considerably reducing energy consumption by eliminating the need for welding and hot-dip galvanizing or immersion galvanizing. Simultaneously, this method ensures a sufficient and homogeneous zinc coating on the sheet steel.

[0007] A further development of the invention is characterized in that the auxiliary joining method is pressure joining, clinching, or clamping. In this process, the components are securely and durably joined together by means of common deformation in the form of a mushroom head, without any risk of welding or punching through in the area of ​​the joint.

[0008] Another embodiment of the invention is characterized in that the side wall, base and / or retaining element are made of, in particular, pre-galvanized sheet steel. In this way, a uniform and homogeneous galvanizing of high quality can be achieved with low material and energy expenditure.

[0009] In another embodiment of the invention, the side wall and / or bottom have slots and / or openings. In this way, larger contaminants can be easily retained, while water can pass through essentially unimpeded.

[0010] In an advantageous embodiment of the invention, the retaining element has a rod, in particular a cross-shaped one, and / or a collar, which preferably tapers towards the body, in particular conically or funnel-shaped. This ensures a secure and good fit on the bearing in the shaft. The cross-shaped rod can also serve as a handle for lifting the dirt trap, in particular a slotted bucket, out of the shaft.

[0011] Yet another embodiment of the invention is characterized in that the retaining element is formed in the shaft corresponding to the bearing, preferably bearing shells, in particular a bearing collar, and especially preferably a support, particularly an annular one. In this way, the retaining element and the bearing can interact particularly advantageously.

[0012] Another advantageous embodiment of the invention is characterized by a handle for lifting the debris trap, in particular a slotted bucket, out of the shaft. This allows the debris trap, in particular a slotted bucket, to be lifted out of the shaft easily and safely. The handle can preferably be attached to the retaining element. This ensures a secure force transmission. Furthermore, if the handle is pivotably attached to the retaining element, the handle for placing a lid, for example a grate, on the debris trap, in particular a slotted bucket, can be folded down to save space, while the handle for lifting the debris trap, in particular a slotted bucket, out of the shaft can be raised, thus enabling easy removal.

[0013] In a further development of the method incorporating the features of the invention, pressure joining, clinching, or clamping are used as auxiliary-joining-part-free mechanical joining methods. This allows a secure connection to be created with low energy expenditure, without the risk of penetration or punching.

[0014] Exemplary embodiments of the invention are explained in more detail below with reference to the drawings. The drawings show: Fig. 1 a slotted bucket as a first embodiment with the features of the invention in a schematic side view, Fig. 2 a top view of the slotted bucket of Fig. 1, Fig. 3 a second embodiment of a slotted bucket with the features of the invention, Fig. 4 a top view of the slotted bucket of Fig. 3, Fig. 5 a schematic side view of a slotted bucket as a third embodiment with the features of the invention, and Fig. 6 A side view of a slotted bucket as a further embodiment with the features of the invention.

[0015] Fig. Figure 1 shows a slotted bucket 10 as a first embodiment with the features of the invention in a schematic side view. In the illustrated embodiment, the slotted bucket 10 has a body 11 with a side wall 12 and a bottom 13. The slotted bucket 10 also has a collar 14. A handle 15 is attached to the collar 14 by means of bolts 17. For this purpose, the handle 15 has eyes 18 at each of its ends, which interact with the bolts 17 to pivot the handle 15.

[0016] In the illustrated embodiment, the side wall 12 consists of a strip of sheet steel. The sheet steel is industrially pre-galvanized using conventional methods. The circumferential surface of the body 11 formed by the side wall can be made of one or more pieces of sheet steel. In the illustrated embodiment, the side wall 12 is formed from a single piece of sheet steel, which is shaped into a ring such that the respective longitudinal ends overlap. Joining points 16 are provided in the overlapping end region of the side wall 12, of which only one joining point 16 is labeled with a reference numeral in the illustration. The body 11 formed by joining the overlapping ends of the side wall 12 in this ring-shaped manner using the joining points 16 widens conically from the base 13 towards the end furthest from the base.

[0017] In the illustrated embodiment, the joining points 16 are produced using a mechanical joining process that does not require auxiliary components. Pressure joining, clinching, or press joining can be used for this purpose. In the illustrated embodiment, the joining points 16 are produced by clinching. For this purpose, a punch and a receptacle are pressed together from the outside and inside at each joining point 16 in such a way that a mushroom-shaped deformation of the two overlapping ends of the side wall 12 is created, thus forming the joining point 16. A suitable number of joining points 16 allows for a stable and durable connection of the two overlapping longitudinal ends of the side wall 12 to be achieved.

[0018] As can be seen from the figure, the side wall 12 has openings 19 and slots 20. For clarity, only one slot 20 is shown with a reference numeral. In the illustrated embodiment, the slots 20 are arranged side by side in the side wall 12, forming a ring-shaped row.

[0019] Similar to the two overlapping longitudinal ends of the side wall 12, the base 13 is also connected to the side wall 12 by means of joining points 16. In the illustrated embodiment, these joining points 16 are also produced by clinching. The base 13, like the side wall 12, is made of sheet steel. The sheet steel, like the side wall 12, is also industrially pre-galvanized. In this way, a secure connection between the base 13 and the side wall 12 can be achieved by means of clinched joining points 16. However, the base 13 can also be connected to the side wall 12 by flanging, riveting, or in another suitable manner.

[0020] The collar 14 is arranged at the end of the side wall 12 facing away from the ground 13. The collar 14 has an extension 21 at its end facing away from the side wall 12. At its end facing the side wall 12, the collar 14 overlaps the side wall 12. In this overlapping area, the collar 14 is connected to the side wall 12 by means of joining points 16. Alternatively, the collar 14 can also be connected to the side wall 12 by crimping, riveting, or in another suitable manner.

[0021] The collar 14 with the extension 21, like the side wall 12, is also made of sheet steel. Here too, industrially pre-galvanized sheet steel is used. Similar to the side wall 12, the collar 14 is made from a ring-shaped strip of sheet steel joined together, with the longitudinal ends overlapping at joining points 16. This is not shown in the figure for clarity.

[0022] The one in Fig. The slotted bucket 10 shown can be inserted into a shaft using the handle 15. In doing so, the extension 21 comes into contact with a corresponding bearing in the shaft. In this position, where the slotted bucket 10 is securely held by the bearing in the shaft through the support of the extension 21, the handle 15 can then be swung down around the bolts 17. A grate can then be placed on top of the shaft.

[0023] Fig. Figure 2 shows a top view of the slotted bucket 10 of Fig. 1. As can be seen from the figure, the base also has 13 openings 22, of which only one opening 22 is marked with a reference symbol in the figure for the sake of clarity.

[0024] In an operating state installed in a channel below a grate as a manhole cover, water passing through the grate can pass through the slots 20 and openings 19, 22, similar to a sieve, while larger impurities are retained in the slotted bucket 10 and especially in its body 11. To empty and dispose of the retained impurities, the grate simply needs to be removed from the manhole. Then, the handle 15 is pivoted upwards around the bolts 19 and can be grasped by hand. In this way, the slotted bucket 10 can be removed from the manhole and emptied. After emptying the slotted bucket 10, it can be placed back on its support in the manhole in reverse order. The handle 15 is then pivoted back down around the bolts 17. Finally, the manhole is covered with the grate.

[0025] Fig. Figure 3 shows a slotted bucket 23 as a second embodiment with the features of the invention in a schematic side view similar to the Fig. 1. Identical elements bear the same reference numerals. The slotted bucket 23 has a body 24 similar to body 11 with a side wall 25. The side wall 25 essentially corresponds to the side wall 12 and is also made of pre-galvanized sheet steel. It also has the slots 20 and the openings 19 and is also joined at its overlapping ends by means of joining points 16 to form a ring-shaped or barrel-shaped structure. Similar to the slotted bucket 10, the cross-section of the body 24 widens conically from the base 13 to an end facing away from it, at which a collar 26 similar to the collar 14 is arranged.

[0026] The main difference between slotted bucket 23 and slotted bucket 10 is that the latter has a greater height from the base 13 to the collar 26, thus providing several rows of slots 20. In the illustrated embodiment, four rows of slots 20 are provided.

[0027] Fig. Figure 4 shows a top view of the slotted bucket 23 from Fig. 3. Identical elements bear the same reference numerals. As can be seen from the figure, the base 13 of the slotted bucket 23 also has openings 22, just like the slotted bucket 10. Its function is similar to that already explained for the slotted bucket 10. Due to its greater height, the slotted bucket 23 can hold more contaminants.

[0028] Fig. Figure 5 shows a schematic side view of a slotted bucket 27 as a third embodiment with the features of the invention. Identical elements bear the same reference numerals. Essentially, the slotted bucket 27 corresponds to the slotted buckets 10 and 23. However, the slotted bucket 27 has a different shape.

[0029] The slotted bucket 27 has a side wall 29 similar to the side wall 12 and a collar 30 similar to the collar 14. These elements, including the bottom 13, form a body 28.

[0030] As can be seen from the figure, the side wall 29 and the collar 30 are not bent in a ring shape. Rather, they have an approximately oval cross-section, which is created by flatly pressing in opposite sides. The side wall 29, the base 13, and the collar 30 are also connected to each other by means of the joining points 16.

[0031] The collar 30 has extensions 32 at its end facing away from the base 13. In the illustrated embodiment, the extensions are not ring-shaped, unlike the extensions 21. Rather, the extensions 32 are arranged at opposite longitudinal ends of the cross-section of the collar 30. The contour of the extensions 32 corresponds to bearing shells in the area of ​​a shaft not shown in the figure.

[0032] The function and construction of the slotted bucket 27 otherwise essentially corresponds to that of the slotted bucket 10. Fig. 1.

[0033] Fig. Figure 6 shows a schematic side view of another slotted bucket 33 as a further embodiment with the features of the invention. Identical elements bear the same reference numerals. The slotted bucket 33 has a body 34 with a side wall 35 and a collar 36. The side wall 35 corresponds essentially to the side wall 29. The collar 36 corresponds essentially to the collar 30.

[0034] Key difference to the slotted bucket 27 from Fig. 5 is that the slotted bucket 33, similar to the slotted bucket 23, has a greater height with several rows of slots 20 than the slotted bucket 27. In the illustrated embodiment, three rows of slots 20 are provided.

[0035] Apart from that, the construction and mode of operation correspond to the previously explained slotted buckets 10, 23, 27. Reference symbol list: 10 slotted buckets 11 bodies 12 side wall 13 Floor 14 collars 15 handle 16 Joining point 17 bolts 18 Eye 19 Opening 20 slots 21 Extension 22 Opening 23 slotted buckets 24 bodies 25 side wall 26 collars 27 slotted buckets 28 bodies 29 side wall 30 collars 31 Opening 32 Extension 33 slotted buckets 34 bodies 35 side wall 36 collars

Claims

Dirt traps, in particular slotted buckets (10, 23, 27, 33), for insertion into a shaft below a shaft cover, in particular a grate, with a bowl-shaped or bucket-shaped body (11, 24, 28, 34) for retaining coarser contaminants, which has at least one side wall (12, 25, 29, 35) and a bottom (13), and with a retaining element (14, 26, 30, 36) projecting laterally beyond the body (11, 24, 28, 34) for insertion into a bearing in the shaft, characterized in that the side wall (12, 25, 29, 35), bottom (13) and / or retaining element (14, 26, 30, 36) are joined together by means of an auxiliary joining method without mechanical joining elements. Dirt trap according to claim 1, characterized in that the auxiliary joining part-free mechanical joining method is pressure joining, clinching, toxing or clinching. Mudguard according to claim 1 or 2, characterized in that the side wall (12, 25, 29, 35), base (13) and / or retaining element (14, 26, 30, 36) are made of, in particular, pre-galvanized, sheet steel. Mudguard according to one of the preceding claims, characterized in that the side wall (12, 25, 29, 35) and / or bottom (13) have slots (20) and / or openings (19, 22, 31). Mudguard according to one of the preceding claims, characterized in that the retaining element has a rod, in particular a cross-shaped one, and / or a collar (14, 26, 30, 36) which preferably tapers towards the body (11, 24, 28, 34), in particular conically or funnel-shaped. Dirt trap according to one of the preceding claims, characterized in that the retaining element is formed in the shaft corresponding to the bearing, preferably bearing shells, in particular a bearing collar, particularly preferably a support, in particular annular. Dirt catcher according to one of the preceding claims, characterized by a handle (15) for lifting the dirt catcher, in particular slotted bucket (10, 23, 27, 33), out of the shaft, wherein the handle (15) is preferably attached to the retaining element (14, 26, 30, 36), in particular pivotably. Method for manufacturing a dirt trap, in particular a slotted bucket (10, 23, 27, 33), according to one of the preceding claims, in which, in particular, galvanized, sheet steel is provided, the at least one side wall (12, 25, 29, 35), the bottom (13) and / or the retaining element (14, 26, 30, 36) are manufactured from the, in particular, pre-galvanized, sheet steel, and in which the side wall (12, 25, 29, 35), bottom (13) and / or retaining element (14, 26, 30, 36) are joined together overlappingly by means of an auxiliary joining method without joining elements. Method according to claim 8, wherein pressure joining, clinching, toxing or clinching is used as the auxiliary joining method without joining elements.

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