ASSEMBLY AID FOR ASSEMBLING A KEDER TARPAULIN AND ASSEMBLY PROCEDURES USING AN ASSEMBLY AID

Description

TECHNICAL AREA

[0001] The present invention relates to a mounting device for mounting a keder tarpaulin which has a keder bead / keder in its respective longitudinal edge, which can be inserted into a groove of a keder rail.

[0002] The invention further relates to a method using an assembly device. STATE OF THE ART

[0003] The Layher XL keder roof, a proven lightweight weather protection roof, is featured in the "LAYHER PROTECTION SYSTEMS" catalog and price list, edition 04.2019. This Layher XL keder roof is based on aluminum lattice girders with an integrated keder profile / groove in the top chord. The grooves are present on both sides of the top chord. A keder tarpaulin is inserted between the lattice girders, featuring a keder bead / seal along its longitudinal edge that is manually inserted into the groove of the keder rail.

[0004] In this process, the keder end sections of a keder tarpaulin are threaded into the profile on both sides of a roof section between two truss girders. The end section of the keder tarpaulin is folded over in a loop, and a crossbar is inserted through this loop for installation. A pulling force is then applied to this crossbar to pull the keder tarpaulin, or rather the keder beads / seed, into the keder rail. With conventional installation methods, two people are required to ensure that the keder tarpaulin is pulled evenly and to the correct width into the rails. Especially with large overhangs or shed roofs, a suitable workspace is often unavailable for this task, making installation time-consuming and difficult.

[0005] WO 2013 / 061058 A1 describes an assembly aid for mounting a keder tarpaulin, comprising a base bearing unit. The base bearing unit has a guide roller rotatably connected about a first axis of rotation, and a second guide roller rotatably connected about a second axis of rotation spaced parallel to the first axis. The keder tarpaulin is threaded between the first and second guide rollers.

[0006] The JP H10 2330 A2, EP 1 674 643 A2 and the JP H09 144323 A also reveal assembly aids with a similar design. PRESENTATION OF THE INVENTION

[0007] Based on the aforementioned prior art, the present invention is based on the objective or problem of providing an assembly device that facilitates the assembly and disassembly of keder tarpaulins on keder roofs, saves time, requires less personnel, increases safety, and reduces wear and tear on the keder tarpaulin, in particular on the keder bead, during assembly.

[0008] Furthermore, the invention is based on the objective or problem of providing a method that enables simple assembly with high safety using the assembly aid device according to the invention.

[0009] The assembly device according to the invention is defined by the features of independent claim 1. Advantageous embodiments and further developments are the subject of the claims directly or indirectly dependent on independent claim 1.

[0010] The method according to the invention is defined by the features of method claim 11.

[0011] The assembly device according to the invention for mounting a keder tarpaulin is characterized by a keder tarpaulin, a keder rail and an assembly aid, wherein the keder tarpaulin has a keder bead / keder in its respective longitudinal edge, which can be inserted into a groove of a keder rail, with a base bearing unit, a connection unit connected to the base bearing unit, which can be detachably connected to a keder rail, a first guide roller rotatably connected to the base bearing unit about a first axis of rotation, a second guide roller rotatably connected to the base bearing unit about a second axis of rotation spaced parallel to the first axis of rotation, wherein the first and second guide rollers / axis of rotation are arranged on the base bearing unit such that the keder bead / keder with the keder tarpaulin can be guided in / through between the opposing rolling guide surfaces of the first / second guide roller.wherein two spaced-apart keder rails are provided, in the end area of ​​which a mounting aid is detachably connected, a keder bead / keder of the keder tarpaulin is inserted into the mounting aid, so that when a tensile force is applied to the keder tarpaulin, the keder beads / keder can be inserted into the respective groove of the keder rail.

[0012] A particularly preferred embodiment of the mounting device according to the invention is characterized in that the first and second guide rollers are arranged on the base bearing unit such that, in the state of the mounting device being connected to the keder rail, they are positioned vertically such that the height of a keder bead / seal that can be inserted between the two guide rollers essentially corresponds to the height of the beginning of a groove in a connectable keder rail. This allows the keder bead / seal to be inserted into the groove of the keder rail practically without wear.

[0013] Another advantageous embodiment is characterized in that the first and second guide rollers are arranged on the base bearing unit such that, when two mounting devices are connected to keder rails spaced apart in the width direction, the distance between the keder beads / keder inserted between the first and second guide rollers in the width direction essentially corresponds to the width of the keder sheet. This ensures that the keder sheet is drawn in with the correct center-to-center dimension under tension in the width direction (plane of the sheet).

[0014] A particularly advantageous further development, which has a simple structural design and enables fast assembly times, is characterized by the fact that a further first guide roller is present, which is rotatably mounted about the first axis of rotation parallel to the first guide roller in the longitudinal direction of the first axis of rotation, and a further second guide roller is present, which is rotatably mounted about the second axis of rotation parallel to the second guide roller in the longitudinal direction of the second axis of rotation.

[0015] To further improve the guiding properties of the assembly device with regard to the supplied bead / seal, a particularly advantageous embodiment is characterized by the fact that the cross-sectional contour of the first rolling guide surface of the first guide roller(s) and / or the cross-sectional contour of the second rolling guide surface of the second guide roller(s) each has an outwardly open rolling groove.

[0016] A particularly advantageous design, which allows disassembly of the mounting aid even with incomplete awning rails, is characterized by the fact that the first guide roller, the subsequent first guide roller, the second guide roller, and the subsequent second guide roller are each detachably or at least loosely connected to their axis of rotation. This allows the mounting aid to be removed even if the awning rail is not completely installed.

[0017] The connection unit for temporarily connecting or securing the assembly aid in the end area of ​​a keder rail can alternatively have a projection unit and / or a closed recess.

[0018] In the case of a projection unit, it can have a slot open towards the end area, through which the projection unit can be pushed onto a keder rail profile wall and secured.

[0019] Securing can also be achieved by inserting the protruding unit into the hollow profile-shaped keder rail and securing it via the closed recess using a flexible strap connection to components adjoining the keder rail profile.

[0020] A particularly simple design is characterized by the fact that the base bearing unit is designed as a plate unit.

[0021] A compact design that ensures a permanently reliable assembly function is characterized by the fact that the base bearing unit / plate unit is arranged centrally between the first guide roller and further first guide rollers and centrally between the second guide roller and further second guide rollers.

[0022] A particularly simple design for connecting the assembly aid to the keder rail profile at the beginning of assembly is characterized by the fact that the projection unit of the connection unit can be detachably connected to a keder rail via a screw connection and / or the recess of the connection unit via a strap connection.

[0023] The assembly method according to the invention for mounting a keder tarpaulin, which has a keder bead / keder present on both opposite longitudinal edges, on keder rails using an assembly device with assembly aid described above, is characterized in that the assembly aid is detachably connected to the end region of two spaced-apart keder rails, the keder bead / keder of the keder tarpaulin is inserted / slid in between the first and second guide rollers, the keder bead / keder is further pushed into the groove beginning of the keder groove of the keder rail, and subsequently a tensile force is applied to the keder tarpaulin to further pull the keder beads / keder into the keder rails.

[0024] The mounting device according to the invention makes the installation of awnings with keder even easier than before. When the mounting aid is connected, it guides the keder bead of the awning and ensures that the awning is pulled apart to the appropriate width and is aligned with the keder rails or their groove.

[0025] The mounting aid is attached to the end faces of the keder rail and secured in place, for example, by a screw connection or a lashing strap. The keder bead of the tarpaulin is then guided through the rollers and into the keder rail. The tarpaulin can now be pulled through the keder rails from the other side. A previously known tarpaulin insertion set, described in the prior art publication, can be used as a pulling aid.

[0026] After the awning rail is installed, the mounting aids can be easily removed or moved to other trusses, allowing an entire roof to be installed using only two mounting aids. By loosening the guide rollers, which are detachably attached to their pivot points, the mounting aid can also be removed even if the awning rail is not fully extended.

[0027] The assembly aid device according to the invention offers, among other things, the following advantages: • Increased safety, as work in hazardous edge areas is reduced. • Easy assembly. • Less wear on the keder strip, as the keder bead is not pulled over the edges of the rails, but guided gently by the guide rollers.

[0028] Further embodiments and advantages of the invention become apparent from the features further listed in the claims and from the exemplary embodiments given below.

[0029] Features of the claims can be combined in any way, provided they do not obviously exclude each other. BRIEF DESCRIPTION OF THE DRAWING

[0030] The invention, as well as advantageous embodiments and further developments thereof, are described and explained in more detail below with reference to the examples shown in the drawing. The features that can be derived from the description and the drawing can be applied individually or in any combination according to the invention. The drawing shows: Fig. 1 Side view of an embodiment of an assembly aid device with a first pair of guide rollers and a second pair of guide rollers, rotatably connected to a base bearing unit, Fig. 2 Schematic front view in direction A2 of the assembly aid device according to Fig. 1 , Fig. 3 schematic top view of the assembly aid according to Fig. 1 in direction A1, Fig. 4 schematic section through the assembly aid according to Fig. 1 , along section DD, Fig. 5 schematic cross-section through a keder rail profile with keder grooves on both sides with inserted keder beads of keder sheets, Fig. 6 schematic perspective view of the connection of the assembly aid according to Fig. 1 to a keder rail profile, Fig. 7 schematic detailed perspective view of a keder roof with keder roof trusses, between which a keder roof tarpaulin is inserted using the assembly aid device on both sides according to Fig. 1 and Fig. 8 schematic perspective view of a scaffold tower construction where a keder roof tarpaulin is attached to the roof side using the assembly aid device on both sides according to Fig. 1 is being withdrawn. WAYS TO IMPLEMENT THE INVENTION

[0031] An embodiment of an assembly aid 10 according to the Figuren 1 bis 4 The base bearing unit 12 has a base bearing unit 12, which is designed as a plate unit. A first guide roller 20 is connected to each side of the base bearing unit 12 via a rotation axis D1 extending perpendicular to the plate plane. Below the first pair of guide rollers 20, a second pair of guide rollers 22 is connected to the base bearing unit 12 on both sides via a rotation axis D2 that runs parallel to the rotation axis D1.

[0032] The first and second guide rollers 20, 22 are designed such that a keder bead or keder 52 of a keder tarpaulin 50 can be inserted between them. To ensure particularly good guiding properties, the first rolling guide surface 24 of the first guide roller 20 and the opposite second rolling guide surface 26 of the second guide roller 22 each have a rolling groove into which the keder 52 of a keder tarpaulin 50 can be inserted (see Fig. 2 ).

[0033] Accordingly, the first leading role 20 and the second leading role 22 are located on the opposite side of the base camp unit 12.

[0034] The plate-shaped base bearing unit 12 also has a connecting unit 14, which is designed both as a projection unit 14.1 and as a self-contained recess 14.2.

[0035] The projection unit 14.1 has a slot 32 open towards its free end region, through which the projection unit 14.1 can be inserted profileally into a keder rail 54 with a keder groove 56, so that the wall of the keder rail 54 is partially arranged in the slot 32. In the illustrated embodiment, the projection unit 14.1 has two through-holes 36 on the upper side of the slot 32, through which a screw connection 34 can be made by screwing in screws (see Fig. 6 ), to secure the mounting aid 10 inserted into the keder rail 54 in its position. The insertion / extension direction of the mounting aid 10 into / out of the keder rail 54 is in Fig. 1 represented by the double arrow E.

[0036] Both the first guide roller pair 20 and the second guide roller pair 22 are detachably or at least loosely connected to the first pivot axis D1 and the second pivot axis D2, respectively, so that by releasing this connection the connection can be loosened, allowing the assembly aid 10 to detach the keder sheet 50 from the keder rail 54 even with the keder bead / keder 52 still inserted. In the exemplary embodiment, the pivot axes D1 and D2 are designed as a screw-nut unit with spacer washers. It is also possible to design a captive connection with a release mechanism.

[0037] In Fig. 1 and 2The height direction is indicated by the double arrow HR. The inserted keder bead / keder 52 is inserted at the height level H between the first guide roller 20 and the second guide roller 22, wherein the connection of the assembly aid 10 to the keder rail 54 is designed such that the keder groove 56 of the keder rail 54 is located at the same height level H as the keder bead / keder 52 inserted between the guide rollers 20, 22 when connected.

[0038] This geometric design significantly reduces the wear of the keder bead / seal 52 when it is inserted into the keder groove 56. At the same time, the wear of the keder bead / seal 52 is further reduced compared to the known assembly method when the keder sheet 50 is subsequently inserted, because the keder bead / seal 52 is initially inserted between the first and second guide rollers 20, 22. Due to its height, the keder bead / seal 52 is not subjected to significant wear when inserted into the keder groove 56, which normally has sharp edges in the end region of the keder rail.

[0039] In the figures, the lateral direction, i.e., the direction perpendicular to the plane of the base bearing unit 12, is indicated by the reference symbol BR. The arrangement of the roller pairs opposite each other in the lateral direction BR, consisting of the first and second guide rollers 20, 22, is designed such that in the state in which the keder sheet 50 is retracted (see Fig. 7 or 8 ) the distance of the opposing keder beads / keder 52 in the width direction BR corresponds to the width of the keder sheet 50, so that the inserted keder sheet 50 is also under tension in the width direction BR during disassembly and is reliably pulled in.

[0040] Fig. 5 Figure 1 shows an embodiment of a keder rail 54, which can be mounted, for example, on a top chord of the truss girder. The keder 52 of the keder sheet 50 are inserted into the keder grooves 56 of the keder rail 54 on both sides. The assembly aid 10 according to the invention is in Fig. 5 schematically shown in dashed lines, wherein the connection of the mounting aid is made to the keder rail 54 by inserting the projection unit 14.1 through the slot 32 into a profile wall of the keder rail and the position of the inserted mounting aid 10 is subsequently secured via the screw connection 34 (see Fig. 6 ).

[0041] Alternatively, the securing of the mounting aid on a keder rail 54 can also be achieved by inserting the projection unit 14.1 into the hollow profile body of a keder rail and then passing a lashing strap through the recesses 14.2, which is lashed under tension to a protruding fixed component of the surrounding structure.

[0042] The perspective representation of Fig. 6 shows the connection of the mounting aid 10 to the keder rail 52 via a screw connection 34 according to Fig. 5 from one perspective.

[0043] The Fig. 7 Figure 10 shows, in a highly schematic form, the assembly process of a keder-covered tarpaulin 50 onto a keder-covered roof with a truss support structure 60, which has truss girders 62 whose top chord has a keder rail 54. In the vertical area at the beginning of the truss girder 62, assembly aids 10 are connected to the keder rails 54 on both sides of a roof span between adjacent truss girders 62. The keder-covered tarpaulin 50 with its keder 52 is inserted through these aids. Once the keder-covered tarpaulin 50 is inserted into the assembly aid 10 on both sides and into the keder grooves 56 of the keder rails 54, the entire keder-covered tarpaulin 50 can be pulled in by applying a tensile force Z to the end of the inserted keder-covered tarpaulin 50. Known pulling aids can be used for this purpose, which, for example, have a crossbar that is guided through a loop located in the end region of the keder-covered tarpaulin 50.

[0044] Fig. 8Figure 1 shows an example of the assembly of a keder tarpaulin 50 on a scaffold-like tower structure, which also has keder rails 54 on its upper side. Here, too, the assembly aids 10 according to the invention are mounted on the end faces of the keder rails 54, via which the keder beads / keder 52 of the keder tarpaulin are inserted and fed to the keder rails 54. Accordingly, by applying a tensile force Z to the end region of the inserted keder tarpaulin 50, the keder tarpaulin is then completely pulled onto the upper side of the structure.

Claims

1. Fitting apparatus for fitting a keder tarpaulin (50), having - a fitting aid device (10), - a keder tarpaulin (50), - a keder rail (54), - wherein the keder tarpaulin (50) has in its respective longitudinal edge a keder bead / keder (52) which is introducible into a groove (56) of a keder rail (54), having - a base bearing unit (12), - an attachment unit (14) which is attached to the base bearing unit (12) and which is connected in a releasable manner to a keder rail (54), - a first guide roller (20) which is attached to the base bearing unit (12) so as to be rotatable about a first axis of rotation (D1), - a second guide roller (22) which is attached to the base bearing unit (12) so as to be rotatable about a second axis of rotation, which is spaced apart in a parallel manner from the first axis of rotation (D1), - wherein the first and second guide rollers (20, 22) / axes of rotation (D1, D2) are positioned at the base bearing unit (12) in such a way as to allow guiding in / passage of the keder bead / keder (52) with keder tarpaulin (50) guided between the oppositely situated rolling guide surfaces (24, 26) of the first / second guide roller (20, 22), characterized in that - there are provided two keder rails (54) which are arranged spaced apart and in whose end region the fitting aid device (10) is attached in a releasable manner in each case, - there is provided a keder bead / keder (52) of the keder tarpaulin (50) such that it is guided into the fitting aid device (10), so that, when a pulling force is applied to the keder tarpaulin (50), the keder beads / keders (52) are introducible into the respective grooves of the keder rails (54).

2. Fitting apparatus according to Claim 1, - characterized in that - the first and second guide rollers (20, 22) are arranged on the base bearing unit (12) in such a way that, in the state of the fitting aid device (10) in which it is attached to the keder rail (54), they are arranged in the height direction (HR) in such a way that the height level (H) of a keder bead / keder (52) able to be guided in between the two guide rollers (20, 22) corresponds substantially to the height level (H) of the beginning of a groove (56) of an attachable keder rail (54).

3. Fitting apparatus according to Claim 1 or 2, - characterized in that - the first and second guide rollers (20, 22) are arranged on the base bearing unit (12) in such a way that, in the state of two fitting aid devices (10) in which they are attached to feder rails (54) which are provided spaced apart in a width direction (BR), the distance in the width direction (BR) between the keder beads / keders (52) in each case guided in between the first and second guide rollers (20, 22) corresponds substantially to the width of the keder tarpaulin (50).

4. Fitting apparatus according to one or more of the preceding claims, - characterized in that - there is provided a further first guide roller (20) which is mounted so as to be rotatable about the first axis of rotation (D1) in a manner spaced apart parallel from the first guide roller (20) in the longitudinal direction of the first axis of rotation (D1), and there is provided a further second guide roller (22) which is mounted so as to be rotatable about the second axis of rotation (D2) in a manner spaced apart parallel from the second guide roller (22) in the longitudinal direction of the second axis of rotation (D2).

5. Fitting apparatus according to one or more of the preceding claims, - characterized in that - the cross-sectional contour of the first rolling guide surface (24) of the first guide roller(s) (20) and / or the cross-sectional contour of the second rolling guide surface (26) of the second guide rollers (22) in each case have an outwardly open rolling groove (30).

6. Fitting apparatus according to one or more of the preceding claims, - characterized in that - the first guide roller and the further first guide roller (20) and the second guide roller (22) and the further second guide roller (22) are in each case attached in a releasable or at least loosenable manner at their axis of rotation (D1, D2).

7. Fitting apparatus according to one or more of the preceding claims, - characterized in that - the attachment unit (18) has a projection unit (14.1) and / or a closed cutout (14.2).

8. Fitting apparatus according to one or more of the preceding claims, - characterized in that - the base bearing unit (12) is designed as a plate unit.

9. Fitting apparatus according to one or more of the preceding claims, - characterized in that - the base bearing unit (12) / plate unit is arranged centrally between the first guide roller (20) and the further first guide roller (20) and centrally between the second guide roller (22) and the further second guide roller (22).

10. Fitting apparatus according to Claim 7, - characterized in that - the projection unit (14.1) of the attachment unit (14), via a screw connection, and / or the cutout (14.2) of the attachment unit (14), via a strap connection, are / is releasably attachable to a keder rail (54).

11. Fitting method for fitting a keder tarpaulin (50), which has in each case a keder bead / keder (52) provided on both oppositely situated longitudinal edges, to keder rails (54) using a fitting apparatus with a fitting aid device (10) according to one or more of the preceding claims, - characterized in that - the fitting aid device (10) is in each case attached in a releasable manner to the end region of two keder rails (54) which are arranged spaced apart, - the keder bead / keder (52) of the keder tarpaulin (50) is in each case guided in / pushed in between the first and second guide rollers (20, 22), - the keder bead / keder (52) is pushed further into the beginning of the keder groove (56) of the keder rail (54), - and subsequently a pulling force is applied to the keder tarpaulin for the purpose of pulling the keder beads / keders (52) further into the keder rails (54).