Weighting base for weighting a rod-shaped component of a lightning protection system on a flat roof and device with a holding device and such a weighting base

Abstract

Weighting base (1) for weighting a rod-shaped component (2) of a lightning protection system on a flat roof, wherein the weighting base (1) - a lower surface facing the flat roof in the operating position (3), - one of these opposite upper surfaces (4), - an outer surface (5) and - a passage hole extending from the upper to the lower surface (3, 4) for the rod-shaped component (2), characterized in that the passage hole is designed as a passage slot (6) open on one side at the outer surface (5) when viewed from above the upper surface (4) of the ballast base (1), which has a passage opening (7) for the rod-shaped component (2) at its outer slot end interrupting the outer surface (5) and is closed at its inner slot end (8) away from the passage opening (7), and that the upper surface (4) of the ballast base (1) has a step (18) spaced apart from the inner slot end (8) on at least one of its edges (17) adjoining the passage slot (6) and extending from the inner slot end (8) to the outer slot end,at which the distance (a) between the upper surface (4) of the ballast base (1) and the plane spanned by the lower surface (3) of the ballast base (1) in the longitudinal direction of the passage slot (6) towards the passage opening (7) increases such that it is greater than the corresponding distance (b) that the upper surface (3) at the inner end (8) of the slot has to this plane.

Description

[0001] The invention relates to a weighting base for weighting a rod-shaped component of a lightning protection system on a flat roof, wherein the weighting base - an underside surface facing the flat roof in the operating position, - one of these opposite upper surfaces, - an outer shell surface and - has a through-hole extending from the upper to the lower surface for the rod-shaped component.

[0002] Furthermore, the invention relates to a device with at least one such ballast base and a holding device for holding a lightning protection system's air terminal on a flat roof, wherein the holding device for clamping the at least one ballast base has a clamping device which - a rod-shaped component with an external thread, - a foot part connected to the rod-shaped component at one end, projecting radially beyond the external thread, and - includes a nut that can be screwed onto the external thread and, if necessary, a washer and / or a spring washer for the nut.

[0003] A ballast base of the type mentioned above is known from a product data sheet “Concrete Base”, BES 17KG KT16 D337 (102 012) from DEHN SE, D-92318 Neumarkt. The ballast base is designed as an essentially round concrete slab with a thickness of 90 mm and has, when viewed from above, a through-hole located approximately in the center of its top surface, which is suitable for the passage of a rod-shaped component with a diameter of approximately 16 mm.

[0004] It is known in practice to combine the ballast base with a rod-shaped component that passes through the through-hole and is connected at its lower end to a substantially disc-shaped base that projects radially beyond the rod-shaped component and, in the installed position, rests against the underside of the ballast base. The length of the rod-shaped component is greater than the thickness of the ballast base, so that the rod-shaped component projects beyond the surface of the ballast base when it passes through the through-hole and the base rests against the underside of the ballast base.The rod-shaped component features an external thread onto which a nut can be screwed. This secures the edge of the ballast base adjacent to the through-hole between the nut and the base, thus positively connecting the rod-shaped component and nut assembly to the ballast base. A washer and a spring washer can be placed between the nut and the ballast base. A lightning rod or lightning pole can be attached to the section of the external thread above the nut. Alternatively, a lightning rod stand can be screwed onto the external thread, and the lightning rod then attached to the stand. The number of legs on the lightning rod stand can range from 3 to 12, for example.

[0005] With the help of the weight base or weight bases, the lightning rod and, if applicable, the lightning rod stand can be reliably attached to a flat roof without having to drill holes in the sealing layer of the flat roof or damaging it in any other way.

[0006] For cable masts exceeding a certain height, it is possible to stack several ballast bases on top of each other to increase the weight acting on the cable mast stand and thus improve the stability of the cable mast and, if applicable, the cable mast stand. In this case, the rod-shaped components run through all the ballast bases in the stack, so that they are firmly braced together on the flat roof.

[0007] When installing a lightning protection system on a flat roof, the ballast bases, rod-shaped components, nuts, washers, spring washers, air terminal stands, and air terminals are brought onto the roof and assembled there. For larger lightning protection systems, this requires a considerable amount of time.

[0008] If lightning rods are to be mounted on a flat roof where the ballast bases are stacked at different heights, or where some are weighted with stacked ballast bases and some with individual ballast bases, the length of the rod-shaped components can be selected according to the height of the individual ballast bases or the stack height of the stacked ballast bases, such that the rod-shaped components project approximately the same distance beyond the ballast bases or the stacks of ballast bases at the different stack heights.

[0009] This has the advantage that the path along which the nuts are screwed onto the rod-shaped components is approximately the same length for all stack heights, so the time required to screw on the nuts is roughly the same regardless of the stack height. However, a disadvantage is that rod-shaped components of varying lengths must be produced and stored. This is relatively complex and expensive.

[0010] It is also possible to use rod-shaped components of the same length for ballast base stacks with varying stack heights. In this case, the length of the rod-shaped components must be adjusted to the stack height of the tallest ballast base stack. While this simplifies the storage of the rod-shaped components, a disadvantage is that the nuts must be screwed onto the external thread of the rod-shaped components over a relatively long distance when installing individual ballast bases or ballast base stacks with a low stack height. This increases the time required for installation on the flat roof, which can lead to considerable costs, especially on large flat roofs where a large number of ballast bases are to be installed.

[0011] The task is therefore to create a ballast base of the type mentioned above, which can be used as a single ballast base or stacked on top of at least one other identical ballast base to securely weight and fix a rod-shaped component of a lightning protection system on a flat roof without damaging the roof membrane. The ballast base should be designed in such a way that the rod-shaped component of the lightning protection system can be quickly and easily mounted on a flat roof, either on a single ballast base or on a stack of several ballast bases, ensuring that the rod-shaped component is permanently and firmly connected to the ballast base or the stack of ballast bases. Furthermore, the task is to create a device of the type mentioned above that incorporates such a ballast base.

[0012] This problem is solved with regard to the ballast base of the type mentioned above by the fact that the passage hole is designed as a passage slot open on one side at the outer surface when viewed from above, which has a passage opening for the rod-shaped component at its outer end and is closed at its inner end away from the passage opening, and that the upper surface of the ballast base has a step spaced apart from the inner end of the slot on at least one of its edges adjoining the passage slot and extending from the inner to the outer end.at which the distance between the upper surface of the ballast base and the plane spanned by the lower surface of the ballast base in the longitudinal direction of the passage slot towards the passage opening increases in such a way that it is greater than the corresponding distance that the upper surface at the inner end of the slot has to this plane.

[0013] With regard to the device, the aforementioned problem is solved by the features of claim 10.

[0014] Advantageously, this makes it possible to position a pre-assembled clamping device, comprising a rod-shaped component with an external thread, a base part connected to the rod-shaped component at one end and projecting radially beyond the external thread, a nut screwed to the external thread, and optionally a washer and / or a spring washer arranged between the nut and the base part, on the flat roof in a first pre-assembled position relative to the ballast base such that the clamping device - is located outside the passage slot opposite the passage opening of the weight base, - is aligned with the longitudinal extent of the rod-shaped component orthogonally to the plane spanned by the underside surface of the ballast base, and - The base and the nut screwed onto the external thread, as well as any washer and / or spring washer, are arranged relative to the weight base such that the base, in orthogonal projection onto the through-hole, is positioned below the weight base, and the nut, as well as any washer and / or spring washer, are positioned above the weight base. The distance between the nut and the base is chosen to be slightly greater than the height of the individual weight base to be clamped or the height of the stack of weight bases to be clamped.

[0015] This has the advantage that the parts of the tensioning device do not need to be individually transported to the flat roof and assembled there, but rather the tensioning device can be brought to the flat roof already pre-assembled. This reduces the installation effort on the flat roof and the individual parts, such as spring washers, flat washers and nuts, are securely connected so that they cannot be easily lost.

[0016] The clamping device, positioned in the first pre-assembly position, can be easily moved through the through-opening into the through-slot in one assembly direction and brought into a second pre-assembly position, in which the rod-shaped component is positioned between the step and the inner end of the through-slot. In the second pre-assembly position, the nut is positioned behind the step in the assembly direction. At least one of the edge areas of the counterweight base adjacent to the through-slot is located between the base on one side and the nut, and possibly the spring washer and / or the washer, on the other. In the second pre-assembly position, the nut can be screwed slightly further onto the external thread to clamp the rod-shaped component securely to the counterweight base.

[0017] In the event that the nut loosens after prolonged use and the clamping device shifts relative to the weight base towards the through-hole, the step acts as a stop for the nut, spring washer, and / or locking washer. The step essentially holds the clamping device in position even when the nut is loose, preventing it from shifting out of the through-hole slot. This ensures a permanently secure and reliable connection between the rod-shaped component and the weight base or stack of weight bases.

[0018] In an advantageous embodiment of the invention, the weight base has a recess on its upper surface at the inner end of the slot, wherein the upper surface of the weight base at the inner end of the slot is formed by the base of the recess and the at least one step by an inner edge region of the weight base that defines the recess. The recess can be adapted to the dimensions of the nut or – if a washer is arranged between the nut and the weight base – to the dimensions of the washer. The depth of the recess is preferably dimensioned such that the washer is completely embedded in the upper surface of the weight base in the installed position.

[0019] In a preferred embodiment of the invention, the inner edge region defining the mold extends along a circular line, with the inner end of the slot being arranged, in a top view of the upper surface of the weight base, within a region bounded by the circular line and at a distance from the circular line. The diameter of the mold is preferably selected to be slightly larger than the outer diameter of the washer of the clamping device.

[0020] In a further development of the invention, a groove for receiving a rod-shaped component is provided in the underside surface of the ballast base. This groove extends radially to the longitudinal center axis of the rod-shaped component over the projecting base section. The groove runs in the longitudinal direction of the through-slot and is wider than the through-slot, and the through-slot passes through the bottom of the groove at a distance from the side edges of the groove. The depth of the groove is preferably greater than the thickness of the base section, so that the base section, positioned in the first pre-assembly position, can be inserted laterally into the groove when the ballast base rests on the flat roof with its underside. This makes it possible to first stack at least two identical ballast bases on top of each other on the flat roof and only then to mount the clamping device on the resulting stack of ballast bases.

[0021] Preferably, the weight base has a substantially octagonal shape when viewed from above, with the edges of the octagonal shape preferably arranged at 45° intervals with respect to a center point and at a constant distance from the center. This allows for cost-effective manufacturing of the weight base.

[0022] In a preferred embodiment of the invention, the opening through which the outer surface of the weight base is interrupted is arranged centrally between two adjacent edges of the octagonal base. This allows for a mirror-symmetrical design of the weight base.

[0023] It is advantageous if at least one groove-shaped grip strip is embedded in the underside surface of the weight base, preferably running parallel to the through-slot. The installer of the weight base can then grip the strip with the fingers of one hand while carrying it, thus ensuring safe handling.

[0024] In a preferred embodiment of the invention, the weight base has projections on its upper surface and corresponding recesses on its lower surface, which serve as a stacking aid when another identical weight base is placed on top of the first to form a stack of weight bases. The projections and the corresponding recesses are preferably arranged and designed such that the outer surfaces of two stacked weight bases are aligned when the projections of the lower weight base engage in the recesses of the upper weight base.

[0025] The weight base is preferably made of concrete block. This allows for cost-effective production of the weight base.

[0026] An embodiment of the invention is explained in more detail below with reference to the drawing. It shows: Fig. 1 a three-dimensional representation of a weighted base, Fig. 2 a view of the top of the weight base, Fig. 3 a view of the front of the weight base, Fig. 4 a side view of the weight base, Fig. 5 a representation similar Fig. 1, wherein, however, a clamping device is arranged on the weight base in a first pre-assembly position, Fig. 6 a representation similar Fig. 5, wherein the clamping device is arranged in a second pre-assembly position, Fig. 7 a view of the front of the in Fig. 6 arrangement shown, Fig. 8 a view of the back of the in Fig. 6 arrangement shown, Fig. 9 a representation similar Fig. 6, however, the clamping device is arranged in the final assembly position, Fig. 10 a view of the top of the in Fig. 9 shown arrangement, Fig. 11 a representation similar Fig. 7, however, the clamping device is arranged in the assembly position, Fig. 12 a radial cross-section through the in Fig. 9 arrangement shown, wherein the cross-sectional plane is arranged orthogonally to the longitudinal direction of the passage slot, Fig. 13 a rear view of the in Fig. 9 shown arrangement, Fig. 14 a left or right side view of the in Fig. 9 shown arrangement, Fig. 15 a view of the underside of the weight base and Fig. 16 a view of the underside of the in Fig. 9 shown arrangement.

[0027] One in the Fig. 1 to 4, a ballast base designated as 1 for weighting a rod-shaped component 2 of a lightning protection system on a flat roof, has a lower surface 3 facing the flat roof in the operating position, an upper surface 4 opposite this, an outer sheath surface 5 and a passage hole for the rod-shaped component 2 extending from the upper to the lower surface 3, 4.

[0028] The passage hole is designed as a passage slot 6, open on one side at the outer surface 5 when viewed from above on the upper surface 4 of the ballast base 1, which has a passage opening 7 for the rod-shaped component 2 at its outer slot end interrupting the outer surface 5 and is closed at its inner slot end 8 away from the passage opening 7.

[0029] The rod-shaped component 2 has an external thread 9 and is fixedly connected at its lower end to a disc-shaped base 10, which projects radially beyond the external thread. The rod-shaped component 2 and the base 10 are part of a holding device designed as a clamping device 14, which includes a nut 11 that fits the external thread 9, a spring washer 12, and a washer 13. In the Fig. In the embodiment shown in Figure 5, the base part 10 has a substantially square shape. However, other configurations are also conceivable.

[0030] The passage slot 6 of the weight base 1 is designed such that the clamping device 14, when it is in a Fig. 5 is positioned in the first pre-assembly position shown, in which the clamping device 14 - is arranged opposite the passage opening 7 of the weight base 1 outside the passage slot 6, - is aligned with the longitudinal extent of the rod-shaped component 2 orthogonally to the plane spanned by the underside surface 3 of the ballast base 1, and - the foot part 10 and the nut 11 screwed to the external thread 9, as well as the washer 13 arranged on the rod-shaped component 2 between the nut 11 and the foot part 10, and the spring washer 12 arranged between the washer 13 and the nut 11, are arranged relative to the weight base 1 such that the rod-shaped component 2 can be inserted into the passage slot 6 parallel to the plane defined by the underside surface 3 of the weight base 1 in the direction of arrow 15, so that the clamping device 14 at the inner end of the slot 8 of the passage slot 6 can be inserted into the Fig. to bring into the second pre-assembly position shown in 6 to 8, in which the two edge areas 16 of the weighting base 1 adjacent to the passage slot 6 are between - the foot section 10 on the one hand and - the nut 11 and the washer 13 and the spring ring 12 on the other side are arranged.

[0031] In the second pre-assembly position, the clamping device 14 can be moved into a position by tightening the nut 11. Fig. The assembly position shown in Figures 9 to 14 is brought into place, in which the ballast base 1 is clamped between the washer 13 and the foot 10. This secures the clamping device 14 to the ballast base 1. A lightning rod, a lightning mast stand, or other lightning protection system equipment can be attached to the section of the rod-shaped component 2 that projects beyond the nut 11.

[0032] The upper surface 4 of the weight base 1 has, at its edges 17 extending from the inner end of the slot 8 to the opening 7 and adjacent to the through-slot 6 on both sides, a step 18 spaced apart from the inner end of the slot 8. At this step, the distance a between the upper surface 4 of the weight base 1 and the plane spanned by the lower surface 3 of the weight base 1 increases in the longitudinal direction of the through-slot 6 towards the opening 7 such that it is greater than the corresponding distance b that the upper surface 4 has at the inner end of the slot 8 to this plane. The steps 18 form a stop for the washer 13 if the nut 11, which is in the assembled position, should loosen, for example due to alternating loads acting on the rod-shaped component 2, and the washer 13 should shift towards the opening 7.This prevents the clamping device 14 from being displaced through the passage opening 7 and out of the passage slot 6.

[0033] In the Fig. Figures 1 to 3 show that the weight base 1 has a molded recess 19 on its upper side at the inner end of the slot 8, and that the upper surface 4 of the weight base 1 at the inner end of the slot 8 is formed by the base of the molded recess 19 and the steps 18 by an inner edge region of the weight base 1 that bounds the molded recess 19. The inner edge region that bounds the molded recess 19 runs along a circular line. As in Fig. As can be seen in Figure 2, the inner end of the slot 8, viewed from above, is located in an area bounded by the inner edge region and at a distance from the upper surface 4 of the weight base 1. The inner edge region may have an insertion chamfer for the washer 11.

[0034] To accommodate the foot part 10, a groove 20 is recessed into the underside surface 3 of the weight base 1, which runs in the longitudinal direction of the passage slot 6 and is wider than the passage slot 6 ( Fig. 15 and Fig. 16) The through-slot 6 passes through the bottom of this groove 20 at a distance from its side edges. In the assembled position, the foot 10 rests against the bottom of the groove 20 on both sides of the through-slot 6. The width of the groove 20 is chosen such that the foot is held securely in the groove 20 against rotation. The rod-shaped component is firmly connected to the foot, so that the rod-shaped component 2 cannot rotate with the nut 11 relative to the weight base 1 when the nut 11 is tightened.

[0035] In the Fig. 2 and Fig.Figure 15 shows that the weight base 1, viewed from above, has an essentially octagonal shape. The edges of the octagonal shape are angularly offset from each other at 45° intervals with respect to a center point and are arranged at a constant distance from the center. The opening 7 is located centrally between two adjacent edges of the octagonal shape.

[0036] Grooved grip strips 21 are embedded on both sides of the groove 20 in the underside surface 3 of the weight base 1, running parallel to the groove 20. The grip strips 21 facilitate gripping the weight base 1 when carrying it.

[0037] It should also be mentioned that the weight base 1 has four projections 22 on its upper surface 4, which are spaced apart from the center of the upper surface 4 and from the outer surface 5. The projections 22 are adapted to the grip strips 21 in such a way that they can be used as stacking aids when at least two of the weight bases 1 are stacked on top of each other. When the outer surfaces 5 of the stacked weight bases 1 are aligned with each other, the projections 22 of the lower weight base 1 engage with the grip strips 21 of the weight base 1 above it.

Claims

[1] Balancing base (1) for ballasting a rod-shaped component (2) of a lightning protection system on a flat roof, wherein the ballasting base (1) - a lower surface facing the flat roof in the operating position (3), - one of these opposite upper surfaces (4), - an outer surface (5) and - has a passage hole extending from the upper to the lower surface (3, 4) for the rod-shaped component (2), characterized by, that the passage hole is designed as a passage slot (6) open on one side at the outer surface (5) when viewed from above on the upper surface (4) of the ballast base (1), which has a passage opening (7) for the rod-shaped component (2) at its outer slot end interrupting the outer surface (5) and is closed at its inner slot end (8) away from the passage opening (7), and that the upper surface (4) of the ballast base (1) has a step (18) spaced apart from the inner slot end (8) on at least one of its edges (17) adjoining the passage slot (6) and extending from the inner slot end (8) to the outer slot end,at which the distance (a) between the upper surface (4) of the ballast base (1) and the plane spanned by the lower surface (3) of the ballast base (1) in the longitudinal direction of the passage slot (6) towards the passage opening (7) increases such that it is greater than the corresponding distance (b) that the upper surface (3) at the inner end (8) of the slot has to this plane. [2] Weighting base (1) according to claim 1, characterized by , that the weighting base (1) has a molded indentation (19) on its upper side at the inner end of the slot (8), and that the upper surface (4) of the weighting base (1) at the inner end of the slot (8) is formed by the bottom of the molded indentation (19) and the at least one step (18) is formed by an inner edge region of the weighting base (1) that limits the molded indentation (1). [3] Weighting base (1) according to claim 2, characterized by, that the inner edge region limiting the molding (19) extends along a circular line, and that the inner slot end (8) is arranged in the top view on the upper surface (4) of the weighting base (1) in an area bounded by the circular line at a distance from the circular line. [4] Weighting base (1) according to one of claims 1 to 3, characterized by , that a groove (20) for receiving a rod-shaped component (2) connected radially to the longitudinal center axis of the rod-shaped component (2) is provided in the underside surface (3) of the weight base (1) above this projecting foot part (10), that the groove (20) extends in the longitudinal direction of the passage slot (6) and is wider than the passage slot (6), and that the passage slot (6) penetrates the bottom of this groove (20) at a distance from the side edges of the groove (20). [5] Weighting base (1) according to one of claims 1 to 4, characterized by, that the weight base (1) has a substantially octagonal basic shape when viewed from above, and that the edges of the octagonal basic shape are preferably arranged at angular intervals of 45° with respect to a center and at a constant distance from the center. [6] Weighting base (1) according to claim 5, characterized by , that the opening (7) of the weighting base (1) interrupting the outer shell surface (5) is arranged centrally between two adjacent edges of the octagonal base shape. [7] Weighting base (1) according to any one of claims 1 to 6, characterized by , that at least one groove-shaped grip strip (21) is embedded in the underside surface (3) of the weight base (1), which preferably runs parallel to the passage slot (6). [8] Weighting base (1) according to any one of claims 1 to 7, characterized by, that the ballast base (1) has projections (22) on its upper surface (4) and recesses on its lower surface that correspond to the projections and serve as a stacking aid when another ballast base (1) of the same construction is placed on the ballast base (1) to form a ballast base stack. [9] Weighting base (1) according to any one of claims 1 to 8, characterized by , that the weight base (1) is designed as a concrete block. [10] Device with a holding device for holding a lightning protection system's mast on a flat roof and with at least one ballast base (1) according to one of claims 1 to 9, wherein the holding device for clamping the at least one ballast base (1) has a clamping device (14) which - a rod-shaped component (2) with an external thread (9), - a foot part (10) connected to the rod-shaped component (2) at one end and projecting radially beyond the external thread (9), and - comprises a nut (11) that can be screwed onto the external thread (9) and, if necessary, a washer (13) and / or a spring washer (12) for the nut (11), wherein the through-slot (6) of the weight base (1) is designed such that the clamping device (14), when it is positioned in a first pre-assembly position in which the clamping device (14) - is arranged opposite the passage slot (6) of the passage opening (7) of the weighting base (1), - is aligned with the longitudinal extent of the rod-shaped component (2) orthogonally to the plane spanned by the underside surface (3) of the ballast base (1), and - the foot (10) and the nut (11) screwed to the external thread (9), as well as, if applicable, the washer (13) and / or the spring washer (12), are arranged relative to the weight base (1) such that the rod-shaped component (2) can be inserted into the passage slot parallel to the plane defined by the underside surface of the weight base (1) in order to bring the clamping device (14) at the inner end (8) of the passage slot (6) into a second pre-assembly position in which at least one of the edge regions (16) of the weight base (1) adjacent to the passage slot (6) is between - the foot section (10) on the one hand and - at least the nut (11) and, if applicable, the washer (13) and / or the spring washer (12) on the other hand, in order to bring the clamping device (14) into an assembly position in which the weight base (1) is clamped between the nut (11) and the foot part (10), and that the step (18) is arranged between the through-opening (7) of the weight base (1) and the nut (11) and / or the spring washer (12) and / or the washer (13) when the clamping device (14) is in the assembly position. [11] Device according to claim 10, characterized by , that the length of the rod-shaped component (2) is adapted to the dimensions of the weight base (1) such that the external thread (9) of the rod-shaped component (2) protrudes beyond the nut (11) in the assembly position.

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