Purlin shoe

Abstract

Purlin shoe (2) with a mounting leg (4) and a support leg (6) connected to the mounting leg (4), wherein the purlin shoe (2) is designed as a bent sheet metal part made of a metal sheet and the mounting leg (4) and the support leg (6) enclose an angle between them, characterized in that the mounting leg (4) has a first purlin contact area (10) and the support leg (6) has a second purlin contact area (12), wherein the purlin shoe (2) has a recess (8) separating the first purlin contact area (10) and the second purlin contact area (12) from one another.

Description

[0001] The present invention relates to a purlin shoe. Purlin shoes are support elements made of sheet metal, preferably sheet steel, on which the purlin of a roof structure rests. Furthermore, the invention relates to a roof structure constructed using corresponding purlin shoes. The invention also relates to a building with a corresponding roof structure.

[0002] The purlin shoe has a mounting leg and a support leg. The mounting legs and support legs are connected to each other and form an angle between them.

[0003] Purlin shoes are used in a roof structure to support purlins. The purlin shoe is positioned in the roof structure so that a purlin can be placed on the supporting leg of the purlin shoe.

[0004] Such purlin shoes can be welded together from two metal sheets, one for the mounting leg and one for the supporting leg.

[0005] DE 20 2010 008 677 U1 discloses a purlin shoe that is bent from a steel sheet as a sheet metal part. This purlin shoe is designed as an angle made of sheet steel. This presents the problem that such a purlin shoe cannot easily be bent into a sharp-edged angle for heavy loads or correspondingly large purlins. This is due, among other things, to the comparatively large material thickness of the sheet steel blank used for such a purlin shoe and the resulting comparatively large bending radius.

[0006] The purlin shoe of DE 20 2010 008 677 U1 is therefore subjected to a complex bending process in the transition area between the mounting leg and the supporting leg, in which both legs are initially bent outwards.

[0007] The object of the present invention is to provide a purlin shoe that can be manufactured more easily.

[0008] According to the invention, this is achieved in that the mounting leg has a first purlin contact area and the support leg has a second purlin contact area. The first purlin contact area and the second purlin contact area are the areas of the purlin shoe against which a purlin comes into contact. The purlin shoe has a recess that separates the first purlin contact area and the second purlin contact area from each other.

[0009] The recess between the first purlin contact area and the second purlin contact area allows such a purlin shoe to be created by simply bending. The bending radius resulting from the bending or folding is not relevant for the contact of the purlin with the first and second purlin contact areas. The recess is designed so that an edge of a purlin can be positioned in the recess. Regardless of the bending radius, a purlin can always be positioned in the purlin shoe in such a way that it can contact both the first purlin contact area and the second purlin contact area over as full a surface as possible. In particular, no spacers, spacer blocks, or similar adjustment elements are required, nor is any reworking of the purlin in the corresponding corner area necessary.

[0010] This is made possible by the fact that only two such purlin shoes are used for each purlin, each of which holds one end of the purlin.

[0011] Such purlin shoes can be obtained particularly easily by cutting a suitably shaped piece from a metal sheet and then bending it into the purlin shoe by simply bending it. Such a purlin shoe can be obtained particularly easily and cost-effectively.

[0012] Preferably, the mounting leg has a first securing region and the support leg has a second securing region, wherein the mounting leg and the support leg are connected to one another via the first securing region and the second securing region. The first securing region and the second securing region are the parts of a sheet metal part between which a bending radius is introduced by bending the metal sheet.

[0013] The purlin shoe is preferably secured to another element of a roof structure via these securing regions. In particular, the first securing region and the second securing region are designed such that the purlin shoe can be secured to, and in particular welded to, a metal support of a roof structure, in particular a T- or H-beam. For this purpose, the first securing region and / or the second securing region can be provided with a contact contour designed such that the purlin shoe can be arranged with the first securing region and the second securing region on the respective metal support. The contact contour can be provided with a support recess to enable simple arrangement of the purlin shoe on the corresponding metal support.

[0014] The metal sheet is preferably steel sheet. The metal support is preferably a steel support.

[0015] Preferably, the angle enclosed by the mounting leg and the support leg is a right angle. Typically, a purlin to be arranged on the purlin shoe has a rectangular cross-section. A purlin shoe whose mounting leg and support leg form a right angle ensures that a purlin inserted into the purlin shoe can contact the first purlin contact area and the second purlin contact area over as much of its surface area as possible.

[0016] The metal sheet preferably has a material thickness of at least 5 mm, more preferably at least 8 mm. A typical material thickness is 10 mm. By using correspondingly thicker materials, such a purlin shoe is suitable for supporting long and heavy purlins. It can also be referred to as a heavy-duty purlin shoe. With such thick materials, a large bending radius results when folding the metal sheet from which the purlin shoe is made. With purlin shoes of this type, the separating recess provided according to the invention between the first purlin contact area and the second purlin contact area is particularly advantageous. Without such a recess, a purlin could not be brought into contact with the first and second purlin contact areas over as full a surface as possible without reworking the purlin in the corresponding corner area or without using spacers, spacer blocks or similar adaptation elements.

[0017] Furthermore, a roof structure is the subject of the invention. The roof structure comprises several parallel and spaced-apart beams. The beams are formed by metal supports. Purlin shoes according to the invention are arranged in pairs opposite one another on the beams.

[0018] The roof structure also includes purlins, each of which extends between the beams and is aligned at right angles to the beams. Each purlin is secured at its end to a purlin shoe of a pair of purlin shoes.

[0019] The spacing between the beams, known as the truss spacing, is preferably between 5 m and 6.5 m. The purlins extending between the beams are of a corresponding length. Due to the resulting weight, the purlin shoes used are then designed with material thicknesses of 8 mm to 10 mm.

[0020] The bars are preferably designed as double T-beams.

[0021] The purlins are preferably made of wood. Using purlin shoes, the roof structure can be easily constructed as a metal-wood construction, with the wooden purlins being secured to the metal beams via purlin shoes made of sheet metal. One advantage of using wooden purlins is the high corrosion resistance of wood compared to metal, especially (structural) steel. Furthermore, a roof covering can be easily applied to the corresponding wooden purlins and secured to the wooden purlins.

[0022] Furthermore, a building with a roof structure as described above is also subject to the invention, wherein the building has vertical metal supports on which the metal girders forming the rafters of the roof structure are arranged. Such a building can be maintained particularly easily. It has a metal skeleton formed from the vertical metal supports and the metal girders arranged on the metal supports. The metal skeleton allows the building to be easily maintained with the necessary static strength. If wooden purlins are used, the roof structure has particularly corrosion-resistant structural elements.

[0023] In particular, animal housing such as chicken coops can be easily constructed using such a building. Animal excrement and their fumes are corrosive. Animal housing therefore presents a challenging environment for metal components such as the building's metal skeleton. By using a roof structure with purlins, wooden purlins can be used. These are typically lighter and more cost-effective, but above all, they are often more corrosion-resistant than corresponding metal components.

[0024] Further advantages and details of the invention can be found in the following description of the figures, which illustrate exemplary embodiments of the invention. The figures schematically show: Fig. 1: a purlin shoe according to the invention in a first view; Fig. 2: the purlin shoe according to Fig. 1 in a side view; Fig. 3: the purlin shoe Fig. 1 in a view from the rear; Fig. 4: a metal sheet from which the purlin shoe is made according to Fig. 1 to Fig. 3 can be obtained by bending; Fig. 5: a section of a building with a purlin shoe according to Fig. 1 to Fig. 3 roof structure; Fig. 6: a cross-section through the roof structure of the building according to Fig. 5 in the area of a bar.

[0025] Parts with the same or similar functions are provided with identical reference numerals where appropriate. Individual technical features of the exemplary embodiments described below can be combined with the features of the independent claims as well as with the features of individual exemplary embodiments described above to form inventive objects.

[0026] Fig. 1 shows a purlin shoe 2. This is made from a bent sheet metal part. The purlin shoe 2 has a mounting leg 4 and a supporting leg 6. In Fig. 1 also shows a recess 8 which separates a first purlin contact area 10 of the mounting leg 4 and a second purlin contact area 12 of the supporting leg 6.

[0027] The recess 8 extends partially into the bent sheet metal part forming the purlin shoe 2. The mounting leg 4 has a first securing area 14. The support leg 6 has a second securing area 16. The mounting leg 4 and the support leg 6 are connected to one another via the first securing area 14 and the second securing area 16. A bending radius is introduced into this connection area by a bending process. The recess 8 extends to this connection area.

[0028] The bending radius is designed so that the mounting leg 4 and the support leg 6 form a right angle.

[0029] A purlin 20 can be inserted into the purlin shoe 2. The purlin 20 contacts the mounting leg 4 and the supporting leg 6 in the area of the first purlin contact area 10 and in the area of the second purlin contact area 12. An edge of the purlin 20 is inserted into the recess 8. The purlin shoe 2 is arranged at one end of the purlin 20. The purlin 20 does not rest against the first fixing area 14 or the second fixing area 16.

[0030] The mounting leg 4 has mounting recesses 18 in the first purlin contact area 10. A purlin 20 can be fixed, for example, screwed, to the mounting leg 4 and thus to the purlin shoe 2 via these mounting recesses 18.

[0031] Fig. 2 shows the purlin shoe 2 according to Fig. 1 in a side view. It can be seen that the metal sheet from which the purlin shoe 2 is made has a high material thickness. This results in the Fig. 2 clearly visible bending radius in the connection area between the first fixing area 14 and the second fixing area 16.

[0032] Fig. 3 shows the purlin shoe 2 according to Fig. 1 from a different perspective.

[0033] Fig. Figure 4 shows the metal sheet from which the purlin shoe 2 is formed by bending the mounting leg 4 and the support leg 6 towards each other. The recess 8, which separates the first purlin contact area 10 and the second purlin contact area 12, can be seen.

[0034] Fig. Figure 5 shows a section of a building 22 formed using a purlin shoe 2. The building 22 has a roof structure 24. The roof structure 24 comprises bars 26 formed by metal girders. These bars 26 extend parallel to one another and spaced apart from one another. In the illustrated embodiment, the metal girders are designed as double-T girders. Pairs of purlin shoes 2 are arranged on the bars 26. Purlins 20 extend between the bars 26, each of which is secured at its end in a purlin shoe 2 of a pair of purlin shoes 2. The purlins 20 extend at right angles to the bars 26 between the bars 26.

[0035] The building 22 has vertical metal supports 28. The transoms 26 are arranged on the vertical supports 28. The vertical supports 28 thereby support the roof structure 24.

[0036] In the illustrated embodiment, the roof structure 24 is designed as a gable roof. Each side of the gable roof is supported by two rows of vertical supports 28. The vertical supports 28 arranged closer to the centerline of the building represent the main supports. These are significantly more solid than the vertical supports 28 arranged on the outside of the building.

[0037] It can be seen that the beams 26 are more massive in the area of the vertical supports 28, the main supports, located closer to the centerline of the building. These massive sections of the beams 26 are adjoined on both sides by slimmer sections of the beams 26. Both the massive section of the beams 26 and the slimmer section of the beams 26 are designed as double-T beams. Purlin shoes 2 are arranged on both sections of the beams 26.

[0038] Here, the purlin shoes 2, which are arranged in the solid area of the transoms 26, can be designed differently from the purlin shoes 2, which are arranged in the slimmer areas of the transoms 26. In particular, the design of the first fixing area 14 and / or the second fixing area 16 can each be adapted to the area of the transom 26 where the purlin shoe 2 is arranged.

[0039] In principle, however, bars 26 with a constant cross-section can also be used.

[0040] Fig. Figure 6 shows a cross-section through a transom 26 and two purlins 20 arranged in alignment with one another. It can be seen that the transom 26 is designed as a double-T beam. The purlin shoes 2 are attached to the double-T beam on both sides. In the illustrated embodiment, the purlin shoes 2 are welded to the transom 26.

[0041] It can be seen that the first fixing area 14 of the purlin shoe 2 has a contact contour formed according to the shape of the double T-beam forming the bar 26.

[0042] The purlin shoes 2 are arranged on the beam 26 such that the first fixing area 14 and the second fixing area 16 are laterally inserted into the double-T of the double-T beam. The first purlin contact area 10 and the second purlin contact area 12 are located outside this area of the double-T beam. This also applies to the recess 8 separating the first purlin contact area 10 and the second purlin contact area 12.

[0043] In Fig. 6 further shows how the purlins 20 are arranged at their ends in a purlin shoe 2. The ends of the purlins 20 rest against the first purlin contact area 10 of the mounting leg 4 and the second purlin contact area 12 of the supporting leg 6.

[0044] A corner of the purlin 20 is inserted into the recess 8 between the first purlin contact area 10 and the second purlin contact area 12.

[0045] The purlins 20 are connected to the respective purlin shoe 2 via the mounting recesses 18.

[0046] Fig. 6 also shows a roof covering 30 arranged on the purlins 20. QUOTES CONTAINED IN THE DESCRIPTION

[0000] This list of documents submitted by the applicant was generated automatically and is included solely for the convenience of the reader. This 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

[0000] DE 20 2010 008 677 U1 [0005, 0006]

Claims

[1] Purlin shoe (2) with a mounting leg (4) and a support leg (6) connected to the mounting leg (4), wherein the purlin shoe (2) is designed as a bent sheet metal part made of a metal sheet and the mounting leg (4) and the support leg (6) enclose an angle between them, characterized by in that the mounting leg (4) has a first purlin contact area (10) and the supporting leg (6) has a second purlin contact area (12), wherein the purlin shoe (2) has a recess (8) separating the first purlin contact area (10) and the second purlin contact area (12) from one another. [2] Purlin shoe according to claim 1, characterized by in that the mounting leg (4) has a first fixing region (14) and the supporting leg (6) has a second fixing region (16), wherein the mounting leg (4) and the supporting leg (6) are connected to one another via the first fixing region (14) and the second fixing region (16). [3] Purlin shoe according to claim 1 or 2, characterized by that the first fixing area (14) and the second fixing area (16) are designed such that the purlin shoe (2) can be fixed to a metal support designed in particular as a T- or H-beam, in particular can be welded thereto. [4] Purlin shoe according to one of the preceding claims, characterized by that the angle enclosed by the mounting leg (4) and the support leg (6) is a right angle. [5] Purlin shoe according to one of the preceding claims, characterized by that the metal sheet has a material thickness of at least 5 mm, preferably at least 8 mm. [6] Roof construction (24) comprising a plurality of bars (26) arranged parallel to one another and spaced apart from one another and formed by metal supports, wherein purlin shoes (2) according to one of claims 1 to 5 are arranged on the bars (26) in pairs, as well as purlins (20) arranged between the bars (2) and aligned at right angles to the bars (2), each of which is fixed at its end to a purlin shoe (2) of a pair of purlin shoes (2). [7] Roof construction according to claim 6, characterized by that the bars (26) are designed as double T-beams. [8] Roof construction according to claim 6 or 7, characterized by that the purlins (20) are made of wood. [9] Building (22) with a roof structure (24) according to one of claims 6 to 8, comprising vertical supports (28) made of metal, on which the metal supports forming the bars (26) of the roof structure (24) are arranged.

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