EP2642045B1 - Overlapping arrangement of at least two gangplanks - Google Patents
Overlapping arrangement of at least two gangplanks Download PDFInfo
- Publication number
- EP2642045B1 EP2642045B1 EP13153410.9A EP13153410A EP2642045B1 EP 2642045 B1 EP2642045 B1 EP 2642045B1 EP 13153410 A EP13153410 A EP 13153410A EP 2642045 B1 EP2642045 B1 EP 2642045B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- gangplank
- thread
- hole
- approximately
- overlapping arrangement
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G7/00—Connections between parts of the scaffold
- E04G7/02—Connections between parts of the scaffold with separate coupling elements
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G1/00—Scaffolds primarily resting on the ground
- E04G1/15—Scaffolds primarily resting on the ground essentially comprising special means for supporting or forming platforms; Platforms
- E04G1/152—Platforms made of metal or with metal-supporting frame
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G5/00—Component parts or accessories for scaffolds
- E04G5/08—Scaffold boards or planks
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G7/00—Connections between parts of the scaffold
- E04G7/02—Connections between parts of the scaffold with separate coupling elements
- E04G7/28—Clips or connections for securing boards
Definitions
- the invention relates to an overlapping arrangement of at least two running boards, in particular of at least two scaffolding floors, for a scaffolding, a working platform, a console, a podium or the like, comprising at least a first gangway made of metal, in particular made of sheet steel, and a second gang plank Metal, in particular of sheet steel, of which each gangplate has a running surface of sheet metal, which is preferably substantially distributed over the entire running surface, provided with substantially round through holes, wherein at least a part of the through holes, preferably a majority or substantially all through holes ,
- Each gangplank in each case by a one, preferably in each case substantially or approximately the same size, inner diameter spanning, is limited to a hole edge height above or below a surface of the metal sheet bulged or bulging, peripheral edge of the hole, in particular primarily i the hole edge of a part of these through holes upwards and the hole edge of a part of these through holes is bulged downwards, and wherein the second gangplank is
- installation or arrangement areas may be present, for example in the area of corners of buildings in which standardized fixing of scaffold floors is not possible and / or in which gaps of wall areas are to be bridged or should be providable with walk-in scaffolding elements.
- the scaffolding floors are arranged in their end regions overlapping and inclined to one another in order to be able to provide a continuous running surface.
- As scaffolding floors are often used runways made of metal.
- Such runners are for example from the DE 27 54 226 A , of the DE 29 16 826 A , of the DE 79 12 134 U1 , of the DE 198 58 969 A1 , of the DE 198 58 970 A1 or the DE 102 54 033 A1 known.
- these runways are also referred to as steel floors, since they are preferably made of steel, in particular of sheet steel.
- a particularly advantageous steel sheet bridging gangplank is, for example, from DE 20 2004 021 196 U1 known.
- these runways are also referred to as steel planks, since they are preferably made of steel, in particular of sheet steel.
- Such bridging or supplementary floors must be secured against lifting and against lateral displacement for safety reasons.
- a screw head and a threaded shank having screw the threaded shaft for mounting mounting could be inserted from above or from below by recesses of the secured and at least partially superimposed scaffolding floors.
- a nut could be screwed onto the threaded shank and tightened by means of a tool to provide adequate security against lateral Moving and lifting the respective bridging or supplementary floor relative to at least one second scaffold floor firmly connected to the frame to be able to reach.
- a cylindrical bolt could be used in combination with a Sich ceremoniesssplint, which is inserted after passing through the locking bolt through the holes of the scaffold floors to be connected in a transverse hole of the locking bolt.
- a connection would not be backlash-free, so that the bridging or supplementary floor would be movable both horizontally and vertically relative to the scaffold-fixed scaffolding floor, which would pose a safety risk.
- the bottom side should be accessible in any case.
- the bolt shank has an elastic and flexible recess edge-engagement element, which can be inserted under elastic deformation at least at the recess edge of the recess of a first scaffold floor manually through the recesses of the scaffold floors to be fastened to each other and in the assembled state the recess edge engages behind the recess of the first scaffold floor.
- a mounting bolt is tool-free mountable and disassembled.
- fastening bolts designed in this way it is also possible to compensate for tolerances of dimensions of the recesses of the framework floors and / or to compensate for different distances between the recesses edges of the recesses of the scaffold floors to be secured relative to one another, possibly also due to unevenness of the scaffold floors and / or their running surfaces. create.
- fastening bolts are simple and inexpensive to produce in a rough conditions in the scaffold construction sufficient robustness and are functional even with dirty scaffold floors and safe to use.
- no play-free connections can be achieved.
- these fastening bolts can only be used once, anyway when connections are required which meet the highest safety standards in scaffolding.
- the carrying capacity of these plastic fastening bolts is limited.
- a scaffolding module or framework in which components are or are connected by means of threaded screws, which are screwed for this purpose in separate nuts or are.
- Each platform has a hinge plate rotatable about a hinge, which allows a secure connection of two adjacent platforms of adjacent scaffolding modules together.
- the connecting plate has two or more projections which fit into mating recesses of the adjacent platform with which a secure connection is to be made. The said projections also help in aligning through holes provided in the connection plate with through holes provided in the adjacent platform, so that bolts or threaded screws can be positioned in the then aligned through holes to secure each connection plate to its associated adjacent platform.
- the geometry of the thread of the locking screw is designed so matched to the geometry of the bulging or bulging hole edges of the running boards to be secured, that during the screwing of the locking screw in the through hole or the through holes in Substantially not or not to a plastic deformation and also substantially not or not to an elastic expansion of the or the respective hole edge of the through holes and that the running rails to be secured by means of the screwed-in locking screw are positively and positively clamped together or are tense.
- the bracing by turning in or further turning of the locking screw depending on the applied twisting or tightening torque to low elastic deformation or widening can lead to small plastic deformation in the hole edge area.
- these slight deformations if they occur at all, do not affect the function or quality of the positive and non-positive connection, are therefore not relevant for long-term safe practical use.
- the locking screw with its thread both directly into said through hole of the upper, second runway, as well as directly into said through hole of the lower, first runway substantially without or without a plastic deformation and substantially without or without an elastic expansion of these two through holes is screwed. This allows an even better, more sustainable connection and security can be achieved.
- the thread of the securing screw can be designed to be correspondingly long or possibly only in the region of the respective through-hole.
- such locking screws can also be used for other bridging applications, for example, for securely screwing a corresponding through holes, separate covering surface made of metal, in particular a separate lining plate, with one or more of the running boards for closing gaps between two overlapping running boards.
- the first gangplank and the second gangplank only with the help of the locking screw, so free of further auxiliary fasteners and / or without the aid of a nut screwed onto the locking screw, with the help of the locking screw against lifting each other and against lateral displacement secured relative to each other to clamp with force and form fit. Accordingly, it is provided that the first gangplank and the second gangplate only with the help of the locking screw, so free of further auxiliary fasteners and / or without the aid of a nut screwed onto the locking screw, with the help of the locking screw against lifting each other and against lateral displacement relative to each other secured to each other with force and form-locking braced.
- the through-holes through which the locking screw protrudes or in which the locking screw is screwed with its thread, span a substantially or approximately equal inner diameter. This allows the locking screw with a continuous be designed the same thread, in particular so that in one and the same locking screw no different sizes thread diameter must be present. Moreover, it does not matter which of the running planks the lower plank and which of the running planks forms the upper plank, so that corresponding handling and assembly benefits.
- the thread has a threaded outer diameter which is slightly, that is only about 1.5 to 5.0 percent larger than the inner diameter of that through hole into which the locking screw is screwed with its thread or only by about 1.5 to 5.0 percent larger than the inner diameter of those through holes into which the locking screw is screwed with its thread.
- the thread outer diameter of the thread is larger by about 3.0 percent than the inner diameter of the through hole into which the locking screw is screwed with its thread or by about 3.0 percent greater than the inner diameter of those through holes into which the locking screw is screwed with its thread.
- the inner diameter of the through hole is about 13.0 mm to 14.0 mm, in particular about 13.2 to 13.6 mm, and that the outer diameter of the thread is about 13.7 mm to 14.3 mm, in particular about 14.0 mm.
- Such a diameter pairing has proven to be particularly advantageous in the above sense when using the successfully proven in practice walkways of the applicant.
- the thread has a thread pitch which is approximately 0.25 to 0.35 times, in particular approximately 0.3 times, the inner diameter of the through hole into which the locking screw is screwed or the respective inner diameter of those through holes into which the locking screw is screwed.
- the thread has a thread pitch of about 3.5 mm to 5.0 mm, in particular of about 4.0 mm. This can be combined with those in practice proven safety barriers of Schutzrechtsanmelderin a very secure connection can be achieved, the safety screw especially light and without jamming screwed into the through hole of the plank or in the through holes of the plank and consequently bolted to the gangplank or with the running planks and can be tightened.
- the thread can preferably be designed such that the thread has a flank angle which is about 35 degrees to 50 degrees, in particular about 42 degrees.
- the thread may have a core diameter which is about 9 mm to 11 mm, in particular about 10 mm.
- the locking screw can be screwed in particularly easily and easily or without jamming and can also be used to clamp the running rails to be secured easily, i. without much effort, tighten.
- the thread is a pointed thread or a trapezoid thread.
- the thread has a or the core diameter spanning thread base, viewed in the direction of a screw longitudinal axis of the locking screw between adjacent thread flanks has a width which is about 1.5 to 2.5 mm, preferably about 2.0 mm to achieve a further improvement in terms of the above benefits.
- the hole edges of the through holes are bulged up to a hole edge height above or below a surface of the metal sheet and that the screw head of the locking screw has a head height that corresponds approximately to the hole edge height of the hole edges or the same is larger or smaller than the hole edge height of the hole edges.
- the head height of the screw head of the locking screw is approximately 3.0 mm to 5.0 mm, in particular approximately 3.5 to 4.0 mm.
- the screw head on its pointing away from a screwing the locking screw head side with a, preferably over the entire head width continuous, in cross-section U-shaped slot for screwing, tightening and loosening the locking screw by means of a screwdriver or having the same tool.
- the thread terminates at a distance from one or the screwed-in end of the locking screw, so that the Securing screw has a thread-free insertion end for inserting the locking screw in the direction of its longitudinal axis in a through hole of the through holes, preferably wherein the thread-free insertion end may be circular cylindrical formed with an outer diameter, in particular may correspond to the core diameter of the thread of the locking screw or may be smaller than the core diameter , This facilitates the insertion or screwing the locking screw into or the respective through hole.
- the invention also relates to a scaffolding, a working platform, a console or a podium according to claim 13.
- Fig. 1 shows a system framework 34 in a construction situation with two scaffolding parts 57 and 58.
- the two scaffolding parts 57, 58 are each placed along and adjacent to a building wall 69 of a building.
- the building wall includes two
- the wall portion 74 forms a building-corner transition with a beveled by 45 degrees to the lateral building walls or wall parts 67, 68 designed building corner 70th
- the system framework 34 is constructed from stems 59 which, in a spacing corresponding to the spacing of the framework system, carry known substantially flat perforated discs 60 from one another. Between the stems 59 61 horizontal bars 62, 62.1, diagonal bars 63 and horizontal support bar 64 may be attached to the perforated discs 60 by means of wedge heads also referred to as connecting heads 64. For this purpose, wedges 65 penetrate the perforated disks 60 and the wedge heads 61.
- the perforated disks 60 preferably have eight openings which are each arranged at an angle of approximately 45 degrees to one another, through which the wedges 65 extend in the firmly wedged state and which the connection heads clamped thereto 61 mediate with it, preferably by welding, fixed scaffolding elements a certain orientation.
- the Horizontaltragriegel 64 preferably have an upwardly open and in cross-section U-shaped profile, which is provided with upstanding profile webs.
- Ein rehabilitationwhiskar 71 for example in the form of Ein rehabilitationkrallen be placed on the upper Auflager
- the profile webs which may preferably be attached to front sides of working or running surfaces 25 having scaffolding floors 23.
- two scaffolding floors 23 are arranged side by side with opposite longitudinal end faces.
- the width of the respective frame part 57, 58, respectively, the width of the horizontal bar, the respective requirements Accordingly, it can also be chosen such that it can be designed adapted to only one scaffold floor 23 or even more than two adjacent scaffold floors. In the aforementioned manner, it is possible to build up a stable system framework 34 which satisfies the practical requirements in a particular way. It is understood, however, that the invention can also be used advantageously in conjunction with other system frameworks or other frameworks.
- a further scaffold floor 22 is provided as bridging or supplementary floor, which is also referred to as the second or upper scaffold floor.
- This scaffold floor 22 is arranged approximately parallel to the oblique wall portion 74 of the corner 70 and adjacent thereto in the embodiment.
- the scaffold floor 22 is located in subregions, here in each case with one of its two end regions, on the surface of a scaffold floor 23 of the scaffolding floors 23, 23 arranged at a horizontal distance from each other at approximately the same height, in this case on the uppermost level of the scaffolding parts 57 and 58.
- the framework floors 22 and 23 are each made of steel cup. At the longitudinal edges of the scaffold floors 22, 23 are each formed by folding longitudinal edge beams 86.1, 86.2; 90.1, 90.2 provided.
- the longitudinal edge spars 86.1, 86.2; 90.1, 90.2 each have a longitudinally extending stiffening profile 88.1, 88.2 formed by folding; 92.1, 92.2.
- the respective stiffening profile 88.1, 88.2; 92.1, 92.2 each forms a sub-spar.
- the stiffening profile or the sub-spar 88.1, 88.2; 92.1, 92.2 extends in each case substantially over the entire length of the respective scaffold floor 22, 23 parallel to its longitudinal axis.
- the two edge spars 90.1, 90.2 of the second or upper scaffolding floor 22, in this case the bridging or supplementary floor 22 or the steel screed 22, have a height 91 which, for example, is approximately 45 mm to 46 mm.
- the two edge spars 86.1, 86.2 of the first and lower scaffold floor 23 and the steel floor 23 have compared to the height 91 of the edge spars 90.1, 90.2 of the second or upper scaffolding floor 22 a greater height 87, for example, about 76 mm to 77 mm.
- the upper edge of the hole edges 28.1 and 32.1 of the upwardly bulged or bulged hole edges 28.1 and 32.1 is slightly below the upper edge of the respective edge spar 90,1, 90.2 or 86.1, 86.2 arranged, for example, by about 0.5 mm below ,
- the scaffold floors 22, 23 each have at their two facing away from each other end faces fixed to the tread 24, 25 and fixed to the longitudinal edge spars 86.1, 86.2; 90.1, 90.2 connected end profiles 89, 93 of metal.
- the end profiles 89, 93 extend substantially over the entire width of the respective scaffolding floor 22, 23.
- The, preferably designed as U-profiles, End profiles 89, 93 each have a height which corresponds to the clear width between the underside of the tread 24, 25 forming metal sheet 84 and the respective stiffening profile or sub-spar 88.1, 88.2; 92.1, 92.2 corresponds.
- the end profiles 89, 93 and the longitudinal edge spars 86.1, 86.2; 90.1, 90.2 each form a frame made of metal.
- the scaffold floors 22, 23 each have a running surface 24, 25 made of sheet metal 84, preferably made of sheet steel, which is substantially over the entire tread 24, 25 distributed with substantially circular through holes 27, 31 is provided.
- the through holes 27, 31 are thus designed as circular holes 39, 40.
- the through holes 27, 31 form openings of the respective running surfaces 24, 25 of the framework floors 22, 23.
- Each scaffold floor 22, 23 has a plurality of through holes 27, 31.
- the through holes 27, 31 each span a substantially or approximately equal inner diameter 36 and are in each case of a bulging or bulging, circumferential hole edge 28; 28.1, 28.2; 32; 32.1, 32.2 limited.
- the inner diameter 36 in the preferred embodiments shown is about 13.6 mm, but may be smaller by up to about 0.4 mm.
- the hole edge 28.1; 32.1 of a part of these through-holes 27.1; 31.1 is up and the hole edge 28.2; 32.2 of a part of these through-holes 27.2; 31.2 is bulging downwards or arched upwards.
- a plurality of the through-holes 27.1, 31.1 are provided with hole edges 28.1, 32.1 which are raised or arched upwards above the respective running surface 24, 25, and a further plurality of the through-holes 27.2, 31.2 are provided with the surface of the respective running surface 24, 25 ., arched hole edges 28.2, 32.2 provided.
- the through holes 27.1, 31.1 with upwardly bulged or bulging hole edges 28.1, 31.1 anti-skid fuses and the through holes 27.2, 31.2 with downwardly bulged or bulging hole edges 28.2, 31.2 form drainage openings for liquids, such as rainwater or paint and the like out.
- the upper scaffold floor 22 is in each case with the aid of a locking screw 20 according to the invention attached to the respective, here each outer scaffold floor 23 of the frame parts 57 and 58.
- FIG. 2 shows an overlap arrangement 30 with two runners 22, 23 in the form of scaffold floors, for example in the region of the corner transition according to FIG. 1 ,
- a second gangplank top gangplate 22 in the form of a bridging or supplementary scaffold floor with one of its end portions on the surface designed as a tread 25 overlapping also referred to as the first gangplank 23 lower runway 23 in the form of a scaffold floor of a stand scaffold.
- the lower or first framework floor 23 is fastened to the support bars 64 via known fastening means 71, for example with the aid of the hooks or hanging claws shown.
- Said second or upper gangplate 22 is relative with the aid of a locking screw 20 according to the invention shown here in longitudinal section, which is screwed into a through hole 27.2 of the second and upper gangplank 22 as well as into a through hole 31.1 of the first and lower gangplank 23, respectively to which this supporting first gangplate 23 secured against lateral displacement in the displacement plane 21 and against lifting secured to the first gangplate 23.
- FIG. 2 is thus shown by the example of two scaffold floors 22 and 23, as one of the bridging or supplementary scaffolding floors 22 relative to one of the scaffolding floors 23 by means of a locking screw 20 against lateral displacement in the displacement plane 21 and against lifting in a direction perpendicular to the displacement plane 21 and the scaffolding floor 23 may be secured away.
- the bridging or supplementary scaffold floor 22 rests on the surface of the lower scaffolding floor 23 in one of its end regions and obliquely to the scaffold floor 23 in its end region.
- the securing screw 20 protrudes at the upper framework floor 22 through a through hole 27.1, which has upturned or bulged hole edges 28.1 below the tread 24, while the locking screw 20 protrudes at the lower framework floor 23 through a through hole 31.2, which is above the running surface 25 of this lower frame bottom 23 has bulged or bulged hole edges 32.1.
- the locking screw 20 is screwed both directly into the through hole 27.1 of the upper framework floor 22 and directly into the through hole 31.2 of the lower framework floor 23, in each case without plastic deformation and without elastic widening of the respective through hole 27.1, 31.2.
- the two scaffolding floors 22 and 23 against each other play and force and positively clamped, being secured by means of the locking screw 20 against displacement in the said displacement plane 21 and against lifting each other.
- the locking screw 20 can also be performed differently through the through holes 27, 31.
- the locking screw 20 may protrude at the upper framework floor 22 through a through hole 27.2, which has upturned or arched hole edges 28.2 above the tread 24, while the locking screw 20 may protrude at the lower framework floor 23 through a through hole 27.1, according to has upturned or bulged hole edges 32.2 below the tread 25 of this scaffold floor 23. It is further understood that the locking screw 20 both at the scaffold floor 22 and at the scaffold floor 23, through the through holes 27.2, 31.2 with each of the treads 24, 25 bulged or bulged hole edges 28.2, 32.2 or through their through holes 27.1, 31.1 with each above the treads 24, 25 bulged or bulged hole edges 28.1, 32.1 can protrude through.
- FIG. 3 can also be a plurality of more than two scaffolding floors 22, 22.1, 22.2, which can serve as bridging or supplementary scaffold floors, in the form of a cascade overlap arrangement 50 relative to each other and relative to at least one scaffold floor 23 by means of securing screws according to the invention 20 be secured.
- two of the scaffold floors 22.2, 23; 22.1, 22 are secured relative to each other by at least one locking screw 20 against lateral displacement and lifting.
- the locking screw 20 is screwed both directly into the with a downwardly bulged or bulging hole edge 28.2 circumferentially limited through hole 27.2 of the upper scaffold floor 22 as well as directly into the also with a downwardly bulged or bulging hole edge 32.2 circumferentially limited through hole 31.2 of the lower scaffold floor 23 screwed, in each case without plastic deformation and without elastic widening of the respective through hole 27.2, 31.2.
- the screw head 26 of the locking screw 20 engages over that through hole 27.2 of the upper scaffold floor 22, in which the locking screw 20 is screwed and the said screw head 26 is located on the surface between two adjacent, respectively upwardly bulged or bulging hole edges 28.1, 28.1 of Through holes 27.1, 27.1 of the metal sheet 84 at.
- the screw head 26 has a head height 78, which corresponds to the hole edge height 72 of the bulged or curved hole edges 28, 31 above the said surface of the metal sheet 84, so that there can be no trip hazard.
- the hole edge height 72 is for example 3.5 to 4.0 mm.
- the geometry of the thread 35 of the locking screw 20 is designed in such a way matched to the geometry of the bulged or curved hole edges that it does not become during the screwing of the locking screw 20 into the through holes elastic or plastic deformation of the hole edge of these through holes can come.
- the locking screw 20 is in the FIGS. 6 to 11 shown separately.
- the locking screw 20 is made of metal, preferably made of steel.
- the locking screw 20 has as essential elements a screw shaft 29 with a thread 35 and a screw head 26.
- the screw shaft 29 extends in a longitudinal direction parallel to a longitudinal axis 33 of the locking screw 20.
- the screw head 26 is disposed at one end of the locking screw 20 and extends perpendicular to the longitudinal axis 33 and to the screw head 29 radially outwardly beyond the outer diameter 42 of the thread 35 addition.
- the screw head 26 is designed as a circular cylindrical flat head. It has a head diameter or outer diameter 75.
- the head or outer diameter is for example about 3.5 to 4.0 mm.
- the screw head 26 is provided on its side facing away from the screw 56 and from the insertion end 51 of the screw shaft 29 head side 79 with an outwardly open, in cross-section U-shaped slot 81.
- the slot 81 has a slot width 81.1 and a slot height 81.2.
- the slot width 81.1 is for example about 5.0 mm and the slot height 81.2 is for example about 2.0 to 2.5 mm.
- the length 77 of the locking screw 20 is for example about 60 mm to 62 mm.
- the length 29.1 of the screw shank 29 is for example about 57 mm.
- the thread 35 of the locking screw 20 does not extend in the longitudinal direction over the entire length 29.1 of the screw shaft 29, but only over a partial length or thread length 41, for example, about 49 mm.
- the thread 35 terminates in the direction of the screw head 26 viewed at a distance in front of the screw head 26 and ends in the opposite direction viewed at a distance 51.1 in front of the other end of the screw shaft 29.
- This distance 51.1 is for example about 4.0 mm.
- a thread-free insertion end 51 is formed. This has a said distance corresponding insertion length 51.1.
- the insertion end of the screw shaft 29 has a thickness 45 and an outer diameter, which preferably corresponds to the core diameter 47 of the thread 35.
- the core diameter 47 of the thread 35 is preferably 10.0 mm.
- the thread 35 is a catchy right-hand thread in the form of a trapezoidal thread. It is understood, however, that the thread may also be a left-hand thread.
- the thread 35 is a non-self-tapping thread.
- the thread 35 has a flank angle 44 between adjacent thread flanks 94.1, 94.2. The flank angle is preferably 42 degrees.
- the thread 35 has a thread pitch 43, which is preferably 4.0 mm.
- the thread 35 has a thread depth 48.1, which is preferably 2.0 mm.
- the thread 35 is bounded radially inwards or to the longitudinal axis 33 of the screw by a parallel to the screw longitudinal axis 29 extending flat thread roots 48 and is bounded radially outwardly by a thread crest 95 which is bounded by a parallel to the screw longitudinal axis 33 extending outer surface.
- the width 49 of the thread root 48 between two thread flanks 94.1 and 94.2 is preferably 2.0 mm. It is understood that the thread reason may also be designed differently, so for example may be rounded concave.
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Connection Of Plates (AREA)
- Bridges Or Land Bridges (AREA)
- Clamps And Clips (AREA)
Description
Die Erfindung betrifft eine Überlappungs-Anordnung von wenigstens zwei Laufplanken, insbesondere von wenigstens zwei Gerüstböden, für ein Baugerüst, eine Arbeitsbühne, eine Konsole, ein Podium oder dergleichen, umfassend wenigstens eine erste Laufplanke aus Metall, insbesondere aus Stahlblech, und eine zweite Laufplanke aus Metall, insbesondere aus Stahlblech, von denen jede Laufplanke eine Lauffläche aus Metallblech aufweist, das, vorzugsweise im Wesentlichen über die ganze Lauffläche verteilt, mit im Wesentlichen runden Durchgangslöchern versehen ist, wobei zumindest ein Teil der Durchgangslöcher, vorzugsweise ein Großteil oder im Wesentlichen alle Durchgangslöcher, jeder Laufplanke jeweils von einem einen, vorzugsweise jeweils im Wesentlichen oder etwa gleich großen, Innendurchmesser aufspannenden, bis in eine Lochrandhöhe oberhalb bzw. unterhalb einer Oberfläche des Metallbleches aufgewulsteten bzw. aufgewölbten, umlaufenden Lochrand begrenzt ist, insbesondere wobei der Lochrand eines Teils dieser Durchgangslöcher nach oben und der Lochrand eines Teils dieser Durchgangslöcher nach unten aufgewulstet ist, und wobei die zweite Laufplanke oberhalb der ersten Laufplanke angeordnet ist und die erste Laufplanke derart überlappt, dass die Lauffläche der oberen, zweiten Laufplanke die Lauffläche der unteren, ersten Laufplanke zumindest teilweise übergreift, und wobei die erste Laufplanke und die zweite Laufplanke mittels eines Befestigungs-Bolzens gegen Verschieben relativ zueinander in einer parallel zu ihren Laufflächen verlaufenden Verschiebeebene und gegen Abheben voneinander gesichert wieder lösbar aneinander befestigt sind, und wobei der Befestigungs-Bolzen einen eine Kopfhöhe aufweisenden Befestigungskopf und einen Bolzenschaft aufweist, der sowohl durch ein von einem einen Innendurchmesser aufspannenden, aufgewulsteten, umlaufenden Lochrand begrenztes Durchgangsloch der Durchgangslöcher der oberen, zweiten Laufplanke als auch durch ein von einem einen Innendurchmesser aufspannenden, aufgewulsteten, umlaufenden Lochrand begrenztes Durchgangsloch der Durchgangslöcher der unteren, ersten Laufplanke hindurch ragt, wobei der Befestigungskopf einen Lochrand desjenigen Durchgangsloches der Durchgangslöcher der oberen, zweiten Laufplanke übergreift und an diesem Lochrand anliegt, durch welches der Bolzenschaft des Befestigungs-Bolzens hindurch ragt.The invention relates to an overlapping arrangement of at least two running boards, in particular of at least two scaffolding floors, for a scaffolding, a working platform, a console, a podium or the like, comprising at least a first gangway made of metal, in particular made of sheet steel, and a second gang plank Metal, in particular of sheet steel, of which each gangplate has a running surface of sheet metal, which is preferably substantially distributed over the entire running surface, provided with substantially round through holes, wherein at least a part of the through holes, preferably a majority or substantially all through holes , Each gangplank in each case by a one, preferably in each case substantially or approximately the same size, inner diameter spanning, is limited to a hole edge height above or below a surface of the metal sheet bulged or bulging, peripheral edge of the hole, in particular wobe i the hole edge of a part of these through holes upwards and the hole edge of a part of these through holes is bulged downwards, and wherein the second gangplank is arranged above the first gangplate and the first gang plank overlaps such that the tread of the upper, second plank at least partially overlaps the tread of the lower, first plank, and wherein the first plank and the second plank by means of a fastening bolt against displacement relative to each other secured in a parallel to their treads sliding plane and secured against lifting each other releasably secured to each other, and wherein the fastening bolt has a head having a fastening head and a bolt shank, bounded by both of an inner diameter spanning, a beaded, circumferential hole edge Through hole of the through holes of the upper, second gangplank as well as through an inner diameter spanning, a beaded, circumferential hole edge limited through hole of the through holes of the lower, first gangplank through rag t, wherein the fastening head engages over a hole edge of the through hole of the through holes of the upper, second gangplate and bears against this hole edge, through which the bolt shank of the fastening bolt protrudes.
Bei der Aufstellung von Gerüsten, insbesondere von so genannten Systemgerüsten, können Aufstell- oder Anordnungsbereiche vorhanden sein, beispielsweise im Bereich von Ecken von Gebäuden, in denen keine standardisierte Befestigung von Gerüstböden möglich ist und/oder in denen Lücken von Wandbereichen zu überbrücken sind bzw. mit begehbaren Gerüstelementen versehbar sein sollen. In solchen Bereichen werden beispielsweise die Gerüstböden in ihren Endbereichen überlappend und schräg aufeinander liegend angeordnet, um eine durchgehende Lauffläche zur Verfügung stellen zu können. Als Gerüstböden werden vielfach Laufplanken aus Metall eingesetzt. Solche Laufplanken sind beispielsweise aus der
Als Überbrückungsboden wurde früher häufig eine Holzbohle aufgelegt. Derartige Holzbohlen weisen jedoch eine nur begrenzte Witterungsstabilität auf und ihre Rutschsicherheit, insbesondere bei Regen, ist nicht befriedigend. Auch können derartige Holzbohlen nicht erhöhten Anforderungen an die Brandlast genügen.In the past, a wooden plank was often used as a bridging floor. However, such wooden planks have only limited weathering stability and their slip resistance, especially in the rain, is not satisfactory. Also, such wooden planks can not meet increased demands on the fire load.
Deshalb ist es wünschenswert, Überbrückungs- bzw. Ergänzungsböden aus Metall, insbesondere aus Stahl und/oder aus Aluminium verwenden zu können. Eine besonders vorteilhafte Stahlblech-Überbrückungs-Laufplanke ist beispielsweise aus der
Derartige Überbrückungs- bzw. Ergänzungsböden müssen aus Sicherheitsgründen gegen Abheben und gegen seitliches Verschieben gesichert werden. Zu diesem Zwecke könnte man beispielsweise eine einen Schraubenkopf und einen Gewindeschaft aufweisende Schraube verwenden, deren Gewindeschaft zur Befestigungsmontage durch Ausnehmungen der zu sichernden und zumindest in Teilbereichen übereinander liegenden Gerüstböden von oben her oder von unten her gesteckt werden könnte. Nachfolgend könnte eine Mutter auf den Gewindeschaft aufgeschraubt und mittels eines Werkzeugs festgezogen werden, um eine ausreichende Sicherheit gegen seitliches Verschieben und Abheben des jeweiligen Überbrückungs- bzw. Ergänzungsbodens relativ zu wenigstens einem zweiten fest mit dem Gerüst verbundenen Gerüstboden erreichen zu können. Die Montage und Demontage unter Verwendung einer derartigen Schraube mit Sicherungsmutter wäre vergleichweise aufwändig, und beim Durchstecken der Schraube von unten oder beim Aufschrauben der Sicherungsmutter von unten auf die von oben durchgesteckte Schraube würde akute Absturzgefahr bestehen. In jedem Fall müsste die Bodenunterseite zugänglich sein.Such bridging or supplementary floors must be secured against lifting and against lateral displacement for safety reasons. For this purpose, one could use, for example, a screw head and a threaded shank having screw, the threaded shaft for mounting mounting could be inserted from above or from below by recesses of the secured and at least partially superimposed scaffolding floors. Subsequently, a nut could be screwed onto the threaded shank and tightened by means of a tool to provide adequate security against lateral Moving and lifting the respective bridging or supplementary floor relative to at least one second scaffold floor firmly connected to the frame to be able to reach. The assembly and disassembly using such a screw with lock nut would be comparatively complex, and when pushing through the screw from below or when screwing the lock nut from the bottom of the screwed-through from above screw acute danger of falling would exist. In any case, the bottom side should be accessible.
Als Verbindungsmittel zur Sicherung eines Überbrückungs- bzw. Ergänzungsbodens an einem gerüstfesten Gerüstboden könnte auch ein zylindrischer Bolzen in Kombination mit einem Sicherungssplint verwendet werden, der nach dem Durchstecken des Sicherungsbolzens durch die Löcher der zu verbindenden Gerüstböden, in ein Querloch des Sicherungsbolzens eingesteckt wird. Eine derartige Verbindung wäre jedoch nicht spielfrei, so dass der Überbrückungs- bzw. Ergänzungsboden relativ zu dem gerüstfesten Gerüstboden sowohl horizontal als auch vertikal bewegbar wäre, was ein Sicherheitsrisiko darstellen würde. Auch hier müsste in jedem Fall die Bodenunterseite zugänglich sein.As a means of securing a bridging or supplementary floor on a scaffold-fixed scaffold floor, a cylindrical bolt could be used in combination with a Sicherungssplint, which is inserted after passing through the locking bolt through the holes of the scaffold floors to be connected in a transverse hole of the locking bolt. However, such a connection would not be backlash-free, so that the bridging or supplementary floor would be movable both horizontally and vertically relative to the scaffold-fixed scaffolding floor, which would pose a safety risk. Again, the bottom side should be accessible in any case.
Es wäre auch der Einsatz von selbstsichernden Bolzen denkbar, jedoch hätte diese Verbindung ebenfalls den Nachteil, dass sie nicht spielfrei möglich wäre. Außerdem wäre die Demontage aufwändig.It would also be conceivable to use self-locking bolts, but this connection would likewise have the disadvantage that they would not be possible without backlash. In addition, the disassembly would be expensive.
Schließlich sind Verbindungen zweier Gerüstböden unter Verwendung von Spezialklammern aus Metall gemäß der
Mit dem Ziel, einen Befestigungsbolzen zur Sicherung von wenigstens zwei Gerüstböden gegen Verschieben relativ zueinander zur Verfügung zu stellen, der bei erhöhter Arbeitssicherheit eine einfache und schnelle Montage sowie Demontage von oben, von Hand und ohne Werkzeug ermöglicht und der im montierten Zustand eine Abhubsicherung gewährleistet, wurde gemäß der
In Abschnitt [0003] der
Aus der
Aus der
Es ist deshalb eine Aufgabe der Erfindung, eine Überlappungs-Anordnung der eingangs genannten Art zur Verfügung zu stellen, die höchsten Sicherheitsanforderungen im Gerüstbau genügt, bei der mittels des Befestigungsbolzens eine Verbindung von wenigstens zwei zu sichernden Laufplanken ohne die Gefahr eines seitlichen Verrutschens und/oder eines vertikalen Abhebens möglich ist, und bei welcher ein Ein- und Ausbau von oben einfach und problemlos möglich ist und bei welcher ein Ein- und Ausbau selbst dann einfach und problemlos möglich ist, wenn kein Zugang von unten an die Unterseite der unteren Laufplanke möglich ist, wie beispielsweise bei einlagigen Deckengerüsten.It is therefore an object of the invention to provide an overlap arrangement of the type mentioned above, the highest safety requirements in scaffolding is sufficient, in the means of the fastening bolt a connection of at least two to be secured running boards without the risk of lateral slippage and / or vertical lifting is possible, and in which a mounting and dismounting from above is easily and easily possible and in which an A - And expansion is easily and easily possible even if no access from below to the bottom of the lower gangplank is possible, such as single-layer ceiling scaffolding.
Diese Aufgabe wird durch die Merkmale des Anspruches 1 gelöst.This object is solved by the features of claim 1.
Bei der Erfindung geht es also im Kern darum, dass die Geometrie des Gewindes der Sicherungsschraube derart auf die Geometrie der aufgewulsteten bzw. aufgewölbten Lochränder der zu sichernden Laufplanken abgestimmt gestaltet ist, dass es während des Einschraubens der Sicherungsschraube in das Durchgangsloch bzw. die Durchgangslöcher im Wesentlichen nicht bzw. nicht zu einer plastischen Deformation und auch im Wesentlichen nicht bzw. nicht zu einer elastischen Aufweitung des bzw. des jeweiligen Lochrandes der Durchgangslöcher kommt und dass die zu sichernden Laufplanken mit Hilfe der eingeschraubten Sicherungsschraube kraft- und formschlüssig miteinander verspannbar sind bzw. verspannt sind. Es versteht sich, dass es bei dem Verspannen durch Ein- bzw. Weiterdrehen der Sicherungsschraube, abhängig von dem dabei aufgewandten Dreh- bzw. Anziehmoment zu geringen elastischen Deformationen bzw. Aufweitungen bis hin zu geringen plastischen Deformationen im Lochrandbereich kommen kann. Jedoch beeinträchtigen diese geringen Deformationen, sofern sie überhaupt auftreten, die Funktion bzw. Qualität der form- und kraftschlüssigen Verbindung nicht, sind also für einen über lange Zeit sicheren Praxiseinsatz nicht relevant.In the invention, it is therefore at the core that the geometry of the thread of the locking screw is designed so matched to the geometry of the bulging or bulging hole edges of the running boards to be secured, that during the screwing of the locking screw in the through hole or the through holes in Substantially not or not to a plastic deformation and also substantially not or not to an elastic expansion of the or the respective hole edge of the through holes and that the running rails to be secured by means of the screwed-in locking screw are positively and positively clamped together or are tense. It is understood that in the bracing by turning in or further turning of the locking screw, depending on the applied twisting or tightening torque to low elastic deformation or widening can lead to small plastic deformation in the hole edge area. However, these slight deformations, if they occur at all, do not affect the function or quality of the positive and non-positive connection, are therefore not relevant for long-term safe practical use.
Gemäß einem bevorzugten Ausführungsbeispiel kann vorgesehen sein, dass die Sicherungsschraube mit ihrem Gewinde sowohl direkt in das besagte Durchgangsloch der oberen, zweiten Laufplanke, als auch direkt in das besagte Durchgangsloch der unteren, ersten Laufplanke im Wesentlichen ohne oder ohne eine plastische Deformation und Im Wesentlichen ohne oder ohne eine elastische Aufweitung dieser beiden Durchgangslöcher eingeschraubt ist. Dadurch lässt sich eine noch bessere, tragfähigere Verbindung sowie Sicherung erreichen.According to a preferred embodiment, it can be provided that the locking screw with its thread both directly into said through hole of the upper, second runway, as well as directly into said through hole of the lower, first runway substantially without or without a plastic deformation and substantially without or without an elastic expansion of these two through holes is screwed. This allows an even better, more sustainable connection and security can be achieved.
Zu diesem Zwecke kann das Gewinde der Sicherungsschraube entsprechend lang oder ggf. auch nur im Bereich des jeweiligen Durchgangsloches ausgebildet sein. Dadurch lassen sich derartige Sicherungsschrauben auch für andere Überbrückungs-Anwendungen einsetzen, beispielsweise zum sicheren Verschrauben einer entsprechende Durchgangslöcher aufweisenden, separaten Belagfläche aus Metall, insbesondere eines separaten Belagbleches, mit einer oder mehrerer der Laufplanken zum Schließen von Lücken zwischen zwei sich überlappenden Laufplanken.For this purpose, the thread of the securing screw can be designed to be correspondingly long or possibly only in the region of the respective through-hole. As a result, such locking screws can also be used for other bridging applications, for example, for securely screwing a corresponding through holes, separate covering surface made of metal, in particular a separate lining plate, with one or more of the running boards for closing gaps between two overlapping running boards.
Durch die Erfindung ist es möglich, die erste Laufplanke und die zweite Laufplanke nur mit Hilfe der Sicherungsschraube, also frei von weiteren Hilfs-Befestigungsmitteln und/oder ohne Zuhilfenahme einer auf die Sicherungsschraube aufgeschraubten Mutter, mit Hilfe der Sicherungsschraube gegen Abheben voneinander und gegen seitliches Verschieben relativ zueinander gesichert miteinander kraft- und formschlüssig zu verspannen. Demgemäß ist vorgesehen, dass die erste Laufplanke und die zweite Laufplanke nur mit Hilfe der Sicherungsschraube, also frei von weiteren Hilfs-Befestigungsmitteln und/oder ohne Zuhilfenahme einer auf die Sicherungsschraube aufgeschraubten Mutter, mit Hilfe der Sicherungsschraube gegen Abheben voneinander und gegen seitliches Verschieben relativ zueinander gesichert miteinander kraft- und formschlüssig verspannt sind.By the invention it is possible, the first gangplank and the second gangplank only with the help of the locking screw, so free of further auxiliary fasteners and / or without the aid of a nut screwed onto the locking screw, with the help of the locking screw against lifting each other and against lateral displacement secured relative to each other to clamp with force and form fit. Accordingly, it is provided that the first gangplank and the second gangplate only with the help of the locking screw, so free of further auxiliary fasteners and / or without the aid of a nut screwed onto the locking screw, with the help of the locking screw against lifting each other and against lateral displacement relative to each other secured to each other with force and form-locking braced.
Gemäß einer bevorzugten Weiterbildung kann vorgesehen sein, dass die Durchgangslöcher, durch welche die Sicherungsschraube hindurch ragt bzw. in welche die Sicherungsschraube mit ihrem Gewinde eingeschraubt ist, einen im Wesentlichen oder etwa gleich großen Innendurchmesser aufspannen. Dadurch kann die Sicherungsschraube durchgehend mit einem gleichen Gewinde gestaltet sein, insbesondere so dass bei ein und derselben Sicherungsschraube keine unterschiedlich großen Gewindedurchmesser vorhanden sein müssen. Außerdem kommt es dann nicht darauf an, welche der Laufplanken die untere Laufplanke und welche der Laufplanken die obere Laufplanke bildet, so dass sich entsprechende Handhabungs- und Montagevorteile ergeben.According to a preferred development it can be provided that the through-holes, through which the locking screw protrudes or in which the locking screw is screwed with its thread, span a substantially or approximately equal inner diameter. This allows the locking screw with a continuous be designed the same thread, in particular so that in one and the same locking screw no different sizes thread diameter must be present. Moreover, it does not matter which of the running planks the lower plank and which of the running planks forms the upper plank, so that corresponding handling and assembly benefits.
Gemäß einem bevorzugten Ausführungsbeispiel kann vorgesehen sein, dass das Gewinde einen Gewinde-Außendurchmesser aufweist, der geringfügig, nämlich nur um etwa 1,5 bis 5,0 Prozent größer ist als der Innendurchmesser desjenigen Durchgangsloches in welches die Sicherungsschraube mit ihrem Gewinde eingeschraubt ist oder nur um etwa 1,5 bis 5,0 Prozent größer ist als der Innendurchmesser derjenigen Durchgangslöcher, in welche die Sicherungsschraube mit ihrem Gewinde eingeschraubt ist. Dadurch wird zum einen eine sichere form- und kraftschlüssige Verbindung und zum anderen ein klemmfreies Hinein- und Herausschrauben der Sicherungsschraube ermöglicht.According to a preferred embodiment, it can be provided that the thread has a threaded outer diameter which is slightly, that is only about 1.5 to 5.0 percent larger than the inner diameter of that through hole into which the locking screw is screwed with its thread or only by about 1.5 to 5.0 percent larger than the inner diameter of those through holes into which the locking screw is screwed with its thread. As a result, on the one hand a secure positive and non-positive connection and on the other hand a jam-free screwing in and out of the locking screw allows.
Gemäß einem ganz besonders bevorzugten Ausführungsbeispiel kann vorgesehen sein, dass der Gewinde-Außendurchmesser des Gewindes um etwa 3,0 Prozent größer ist als der Innendurchmesser des Durchgangsloches, in welches die Sicherungsschraube mit ihrem Gewinde eingeschraubt ist oder um etwa 3,0 Prozent größer ist als der Innendurchmesser derjenigen Durchgangslöcher, in welche die Sicherungsschraube mit ihrem Gewinde eingeschraubt ist. Dadurch lässt sich eine weitere Verbesserung im Sinne der vorstehenden Vorteile erreichen.According to a most preferred embodiment, it can be provided that the thread outer diameter of the thread is larger by about 3.0 percent than the inner diameter of the through hole into which the locking screw is screwed with its thread or by about 3.0 percent greater than the inner diameter of those through holes into which the locking screw is screwed with its thread. As a result, a further improvement in terms of the above advantages can be achieved.
Gemäß einer Weiterbildung kann vorgesehen sein, dass der Innendurchmesser des Durchgangsloches etwa 13,0 mm bis 14,0 mm, insbesondere etwa 13,2 bis 13,6 mm, beträgt und dass der Gewinde-Außendurchmesser etwa 13,7 mm bis 14,3 mm, insbesondere etwa 14,0 mm beträgt. Eine derartige Durchmesser-Paarung hat sich bei Verwendung der in der Praxis erfolgreich bewährten Laufplanken der Schutzrechtsanmelderin als besonders vorteilhaft in dem vorstehenden Sinne erwiesen.According to a development, it can be provided that the inner diameter of the through hole is about 13.0 mm to 14.0 mm, in particular about 13.2 to 13.6 mm, and that the outer diameter of the thread is about 13.7 mm to 14.3 mm, in particular about 14.0 mm. Such a diameter pairing has proven to be particularly advantageous in the above sense when using the successfully proven in practice walkways of the applicant.
Gemäß einem bevorzugten Ausführungsbeispiel kann vorgesehen sein, dass das Gewinde eine Gewindesteigung aufweist, die etwa das 0,25 bis 0,35-fache, insbesondere das etwa 0,3-fache, des Innendurchmessers des Durchgangsloches beträgt, in welches die Sicherungsschraube eingeschraubt ist oder des jeweiligen Innendurchmessers derjenigen Durchgangslöcher, in welches die Sicherungsschraube eingeschraubt ist. Dadurch lässt sich eine weitere Verbesserung im Sinne der vorstehenden Vorteile erreichen.According to a preferred embodiment, it can be provided that the thread has a thread pitch which is approximately 0.25 to 0.35 times, in particular approximately 0.3 times, the inner diameter of the through hole into which the locking screw is screwed or the respective inner diameter of those through holes into which the locking screw is screwed. As a result, a further improvement in terms of the above advantages can be achieved.
Dadurch, dass die aufgewulsteten Lochränder umlaufend, jeweils in einem eine Durchgangsloch-Achse enthaltenden Querschnitt betrachtet, mit einem Innen-Radius begrenzt sind und dass das Gewinde eine Gewindesteigung aufweist, die etwa dem Innen-Radius entspricht oder die gleich groß oder geringfügig kleiner oder geringfügig größer ist als der Innen-Radius, lässt sich eine weitere Verbesserung im Sinne der vorstehenden Vorteile erreichen.Characterized in that the beaded hole edges circumferentially, each viewed in a cross-section containing a cross-section axis, are limited with an inner radius and that the thread has a thread pitch that corresponds approximately to the inner radius or the same size or slightly smaller or smaller is greater than the inner radius, can be achieved a further improvement in terms of the above advantages.
Gemäß einem ganz besonders bevorzugten Ausführungsbeispiel kann vorgesehen sein, dass das Gewinde eine Gewindesteigung von etwa 3,5 mm bis 5,0 mm, insbesondere von etwa 4,0 mm, aufweist. Dadurch kann in Kombination mit den in der Praxis bewährten Laufplanken der Schutzrechtsanmelderin eine ganz besonders sichere Verbindung erreicht werden, wobei die Sicherungsschraube besondere leicht und klemmfrei in das Durchgangsloch der Laufplanke bzw. in die Durchgangslöcher der Laufplanke eingeschraubt und folglich mit der Laufplanke bzw. mit den Laufplanken verschraubt und verspannt werden kann.According to a very particularly preferred embodiment it can be provided that the thread has a thread pitch of about 3.5 mm to 5.0 mm, in particular of about 4.0 mm. This can be combined with those in practice proven safety barriers of Schutzrechtsanmelderin a very secure connection can be achieved, the safety screw especially light and without jamming screwed into the through hole of the plank or in the through holes of the plank and consequently bolted to the gangplank or with the running planks and can be tightened.
In aufwändigen Versuchen hat es sich herausgestellt, dass das Gewinde bevorzugt derart ausgestaltet sein kann, dass das Gewinde einen Flankenwinkel aufweist, der etwa 35 Grad bis 50 Grad, insbesondere etwa 42 Grad, beträgt.In elaborate experiments it has been found that the thread can preferably be designed such that the thread has a flank angle which is about 35 degrees to 50 degrees, in particular about 42 degrees.
Bevorzugt kann das Gewinde einen Kerndurchmesser aufweisen, der etwa 9 mm bis 11 mm, insbesondere etwa 10 mm, beträgt. Dadurch kann die Sicherungsschraube ganz besonders einfach und leicht bzw. klemmfrei eingeschraubt werden und lässt sich auch zum Verspannen der zu sichernden Laufplanken leicht, d.h. ohne großen Kraftaufwand, anziehen.Preferably, the thread may have a core diameter which is about 9 mm to 11 mm, in particular about 10 mm. As a result, the locking screw can be screwed in particularly easily and easily or without jamming and can also be used to clamp the running rails to be secured easily, i. without much effort, tighten.
Gemäß einer bevorzugten Ausgestaltung kann vorgesehen sein, dass es sich bei dem Gewinde um ein Spitzgewinde oder um ein Trapezgewinde handelt. Dadurch lässt sich eine weitere Verbesserung im Sinne der vorstehenden Vorteile erreichen.According to a preferred embodiment, it can be provided that the thread is a pointed thread or a trapezoid thread. As a result, a further improvement in terms of the above advantages can be achieved.
Dadurch, dass das Gewinde einen bzw. den Kerndurchmesser aufspannenden Gewindegrund aufweist, der in Richtung einer Schraubenlängsachse der Sicherungsschraube betrachtet zwischen benachbarten Gewindeflanken eine Breite aufweist, die etwa 1,5 bis 2,5 mm, vorzugsweise etwa 2,0 mm, beträgt, lässt sich eine weitere Verbesserung im Sinne der vorstehenden Vorteile erreichen.Characterized in that the thread has a or the core diameter spanning thread base, viewed in the direction of a screw longitudinal axis of the locking screw between adjacent thread flanks has a width which is about 1.5 to 2.5 mm, preferably about 2.0 mm to achieve a further improvement in terms of the above benefits.
In bevorzugter Weiterbildung kann vorgesehen sein, dass die Lochränder der Durchgangslöcher bis in eine Lochrand-Höhe oberhalb bzw. unterhalb einer Oberfläche des Metallbleches aufgewulstet sind und dass der Schraubenkopf der Sicherungsschraube eine Kopfhöhe aufweist, die etwa der Lochrand-Höhe der Lochränder entspricht oder die gleich groß oder kleiner ist als die Lochrand-Höhe der Lochränder. Dadurch kann insbesondere dann, wenn die Sicherungsschraube in ein mit ihrem Gewinde- bzw. Einsteckende in Richtung der Aufwulstung eines mit nach unten aufgewulsteten Lochrändern versehenes Durchgangsloch eingeführt bzw. eingeschraubt wird und wenn die Lochränder benachbarter Durchgangslöcher nach oben aufgewulstet sind, der Schraubenkopf derart aufgenommen sein, dass eine Stolperfalle vermieden bzw. verhindert ist.In a preferred development it can be provided that the hole edges of the through holes are bulged up to a hole edge height above or below a surface of the metal sheet and that the screw head of the locking screw has a head height that corresponds approximately to the hole edge height of the hole edges or the same is larger or smaller than the hole edge height of the hole edges. As a result, in particular when the locking screw is inserted or screwed into a through-hole provided with its threaded or insertion end in the direction of the bulge of a hole beaded upwards, and when the hole edges of adjacent through-holes are bulged upwards, the screw head can be accommodated in this way in that a tripping hazard is avoided or prevented.
Gemäß einer Weiterbildung kann vorgesehen sein, dass die Kopfhöhe des Schraubenkopfes der Sicherungsschraube etwa 3,0 mm bis 5,0 mm, insbesondere etwa 3,5 bis 4,0 mm, beträgt. Dadurch lässt sich eine weitere Verbesserung im Sinne der vorstehenden Vorteile erreichen.According to a development, it may be provided that the head height of the screw head of the locking screw is approximately 3.0 mm to 5.0 mm, in particular approximately 3.5 to 4.0 mm. As a result, a further improvement in terms of the above advantages can be achieved.
Gemäß einer bevorzugten Ausführungsvariante kann vorgesehen sein, das der Schraubenkopf auf seiner von einem Einschraubende der Sicherungsschraube weg weisenden Kopfseite mit einem, vorzugsweise über die ganze Kopfbreite durchgehenden, im Querschnitt U-förmigen Schlitz zum Einschrauben, Anziehen und wieder Lösen der Sicherungsschraube mittels eines Schraubendrehers oder dergleichen Werkzeugs aufweist.According to a preferred embodiment, it can be provided that the screw head on its pointing away from a screwing the locking screw head side with a, preferably over the entire head width continuous, in cross-section U-shaped slot for screwing, tightening and loosening the locking screw by means of a screwdriver or having the same tool.
Gemäß einer vorteilhaften Ausgestaltung kann vorgesehen sein, dass das Gewinde in einem Abstand von einem bzw. dem Einschraubende der Sicherungsschraube endet, so dass die Sicherungsschraube ein gewindefreies Einsteckende zum Einstecken der Sicherungsschraube in Richtung ihrer Schraubenlängsachse in ein Durchgangsloch der Durchgangslöcher aufweist, vorzugsweise wobei das gewindefreie Einsteckende kreiszylindrisch mit einem Außendurchmesser ausgebildet sein kann, insbesondere der dem Kerndurchmesser des Gewindes der Sicherungsschraube entsprechen kann oder der kleiner sein kann als der Kerndurchmesser. Dies erleichtert das Einführen bzw. Einschrauben der Sicherungsschraube in das bzw. das jeweilige Durchgangsloch.According to an advantageous embodiment it can be provided that the thread terminates at a distance from one or the screwed-in end of the locking screw, so that the Securing screw has a thread-free insertion end for inserting the locking screw in the direction of its longitudinal axis in a through hole of the through holes, preferably wherein the thread-free insertion end may be circular cylindrical formed with an outer diameter, in particular may correspond to the core diameter of the thread of the locking screw or may be smaller than the core diameter , This facilitates the insertion or screwing the locking screw into or the respective through hole.
Die Erfindung betrifft auch ein Baugerüst, eine Arbeitsbühne, eine Konsole oder ein Podium nach Anspruch 13.The invention also relates to a scaffolding, a working platform, a console or a podium according to claim 13.
Weitere Merkmale, Vorteile und Gesichtspunkte der Erfindung sind den abhängigen Ansprüchen und dem folgenden Beschreibungsteil entnehmbar, in dem ein bevorzugtes Ausführungsbeispiel der Erfindung anhand der Figuren beschrieben ist. Es versteht sich, dass der Fachmann die vorstehenden und auch nachfolgenden Merkmale und Maßnahmen im Rahmen der Ansprüchen einzeln oder gruppenweise beliebig kombinieren kann.Further features, advantages and aspects of the invention can be taken from the dependent claims and the following description part, in which a preferred embodiment of the invention is described with reference to the figures. It is understood that the person skilled in the art can combine the above and also subsequent features and measures within the scope of the claims individually or in groups as desired.
Es zeigen:
- Fig. 1
- eine dreidimensionale Darstellung eines Systemgerüsts mit zwei Überlappungs-Anordnungen;
- Fig. 2
- eine dreidimensionale Darstellung einer Überlappungs-Anordnung mit zwei Laufplanken in Form von Gerüstböden;
- Fig. 3
- eine dreidimensionale Darstellung einer Kaskaden-Überlappungs-Anordnung von mehr als zwei übereinander liegenden Laufplanken, von denen jeweils unmittelbar benachbarte Laufplanken jeweils mit Hilfe einer erfindungsgemäßen Sicherungsschraube gegen seitliche Verschiebung und gegen Abheben gesichert miteinander verspannt sind;
- Fig. 4
- eine weitere Überlappungs-Anordnung mit zwei sich überlappenden Laufplanken in einem Querschnitt, der die Längsachse einer erfindungsgemäßen Sicherungsschraube enthält und der senkrecht zu den Längsachsen der Laufplanken ausgebildet ist;
- Fig. 5
- einen stark vergrößerten Ausschnitt der Überlappungs-Anordnung gemäß
Figur 4 im Bereich des Einschraubendes der Sicherungsschraube; - Fig. 6
- eine dreidimensionale Darstellung einer erfindungsgemäßen Sicherungsschraube;
- Fig. 7
- eine Seitenansicht der Sicherungsschraube;
- Fig. 8
- eine gegenüber der Seitenansicht gemäß
Figur 7 um 90 Grad gedrehte Seitenansicht der Sicherungsschraube; - Fig. 9
- eine Draufsicht auf den Schraubenkopf der Sicherungsschraube gemäß
Figur 8 ; - Fig. 10
- einen Längsschnitt der Sicherungsschraube entlang der Schnittlinien 10-10 in
Figur 8 ; - Fig. 11
- einen stark vergrößerten Ausschnitt des Längsschnitts der Sicherungsschraube im Bereich des in
mit einem Kreis gekennzeichneten Abschnitts der Sicherungsschraube.Figur 10
- Fig. 1
- a three-dimensional representation of a system framework with two overlap arrangements;
- Fig. 2
- a three-dimensional representation of an overlap arrangement with two Laufplanken in the form of scaffold floors;
- Fig. 3
- a three-dimensional representation of a cascade overlap arrangement of more than two superimposed running planks, each of which directly adjacent running planks are braced with each other with the aid of a locking screw according to the invention against lateral displacement and against lifting;
- Fig. 4
- a further overlapping arrangement with two overlapping running planks in a cross section, containing the longitudinal axis of a locking screw according to the invention and which is formed perpendicular to the longitudinal axes of the running boards;
- Fig. 5
- a greatly enlarged section of the overlap arrangement according to
FIG. 4 in the area of the screwed end of the locking screw; - Fig. 6
- a three-dimensional view of a locking screw according to the invention;
- Fig. 7
- a side view of the locking screw;
- Fig. 8
- one opposite the side view according to
FIG. 7 rotated 90 degrees side view of the locking screw; - Fig. 9
- a plan view of the screw head of the locking screw according to
FIG. 8 ; - Fig. 10
- a longitudinal section of the locking screw along the section lines 10-10 in
FIG. 8 ; - Fig. 11
- a greatly enlarged section of the longitudinal section of the locking screw in the area of
FIG. 10 with a circle marked section of the safety screw.
Das Systemgerüst 34 ist aus Stielen 59 aufgebaut, die in einem dem Rastermaß des Gerüstsystems entsprechenden Abstand voneinander an sich bekannte, im Wesentlichen flache Lochscheiben 60 tragen. Zwischen den Stielen 59 können an den Lochscheiben 60 mit Hilfe von auch als Anschlussköpfe bezeichneten Keilköpfen 61 horizontale Stäbe 62, 62.1, diagonale Stäbe 63 und Horizontal-Tragriegel 64 befestigt sein. Hierzu durchdringen Keile 65 die Lochscheiben 60 und die Keilköpfe 61. Die Lochscheiben 60 weisen vorzugsweise acht Durchbrechungen auf, die jeweils in einem Winkel von etwa 45 Grad zueinander angeordnet sind, durch die sich im festgekeilten Zustand die Keile 65 erstrecken und die den daran festgeklemmten Anschlussköpfen 61 mit daran, vorzugsweise durch Schweißen, befestigten Gerüstelementen eine bestimmte Ausrichtung vermitteln. Die Horizontaltragriegel 64 weisen vorzugsweise ein nach oben offenes und im Querschnitt U-förmiges Profil auf, das mit nach oben aufragenden Profilstegen versehen ist. Auf den oberen Auflagerändern der Profilstege können Einhängehilfsmittel 71, beispielsweise in der Form von Einhängekrallen aufgelegt werden, die vorzugsweise an Stirnseiten von Arbeits- bzw. Laufflächen 25 aufweisenden Gerüstböden 23 befestigt sein können. In dem gezeigten Ausführungsbeispiel sind jeweils zwei Gerüstböden 23 mit gegenüberliegenden Längsstirnseiten nebeneinander angeordnet. Es versteht sich jedoch, dass die Breite des jeweiligen Gerüstteils 57, 58, respektive die Breite der Horizontal-Riegel, den jeweiligen Anforderungen entsprechend auch derart gewählt sein kann, dass sie auf nur einen Gerüstboden 23 oder auch auf mehr als zwei nebeneinander liegende Gerüstböden angepasst gestaltet sein kann. Auf die vorgenannte Weise lässt sich ein den Praxisanforderungen in besonderer Weise gerecht werdendes stabiles Systemgerüst 34 aufbauen. Es versteht sich jedoch, dass die Erfindung auch in Verbindung mit anderen Systemgerüsten bzw. anderen Gerüsten vorteilhaft einsetzbar ist.The
Für den Fall, dass einer der beiden Gerüstteile 57 oder 58 derart aufgestellt würde, dass er den anderen Gerüstteil 58 oder 57 stirnseitig überlappt, würde zwischen dem abgeschrägten Wandteil 74 der Ecke 70 und einem der Gerüstteile 57 oder 58 eine Lücke entstehen, welche nicht ausreichend abgesichert wäre. Im übrigen würde dann der betreffende Gerüstteil 57 oder 58 einen vergleichsweise großen Abstand zu dem abgeschrägten Wandteil 74 der Ecke 70 aufweisen, der Arbeiten an diesem Wandteil 74 nicht oder nur unter erschwerten Bedingungen ermöglichen würde.In the event that one of the two
Deshalb ist als Überbrückungs- bzw. Ergänzungsboden ein weiterer Gerüstboden 22 vorgesehen, der auch mit zweiter bzw. oberer Gerüstboden bezeichnet ist. Dieser Gerüstboden 22 ist im Ausführungsbeispiel etwa parallel zu dem schrägen Wandteil 74 der Ecke 70 und benachbart zu diesem angeordnet. Dabei liegt der Gerüstboden 22 in Teilbereichen, hier jeweils mit einem seiner beiden Endbereiche, auf der Oberfläche jeweils eines Gerüstbodens 23 der in einem horizontalen Abstand zueinander auf etwa gleicher Höhe angeordneten Gerüstböden 23, 23 auf, und zwar hier in der obersten Etage der Gerüstteile 57 und 58.Therefore, a
Die Gerüstböden 22 und 23 bestehen jeweils aus Stahlbech. An den Längsrändern der Gerüstböden 22, 23 sind jeweils durch Abkanten gebildete Längs-Rand-Holme 86.1, 86.2; 90.1, 90.2 vorgesehen. Die Längs-Rand-Holme 86.1, 86.2; 90.1, 90.2 weisen jeweils ein durch Abkanten gebildetes sich in Längsrichtung erstreckendes Versteifungsprofil 88.1, 88.2; 92.1, 92.2 auf. Das jeweilige Versteifungsprofil 88.1, 88.2; 92.1, 92.2 bildet jeweils einen Unter-Holm aus. Das Versteifungsprofil bzw. der Unter-Holm 88.1, 88.2; 92.1, 92.2 erstreckt sich jeweils im Wesentlichen über die gesamte Länge des jeweiligen Gerüstbodens 22, 23 parallel zu dessen Längsache. Die beiden Rand-Holme 90.1, 90.2 des zweiten bzw. oberen Gerüstbodens 22, also hier des Überbrückungs- bzw. Ergänzungsbodens 22 bzw. der Stahlbohle 22 weisen eine Höhe 91 auf, die beispielsweise etwa 45 mm bis 46 mm beträgt. Die beiden Rand-Holme 86.1, 86.2 des ersten bzw. unteren Gerüstbodens 23 bzw. des Stahlbodens 23 weisen gegenüber der Höhe 91 der Rand-Holme 90.1, 90.2 des zweiten bzw. oberen Gerüstbodens 22 eine größere Höhe 87 auf, die beispielsweise etwa 76 mm bis 77 mm beträgt. Die Oberkante der Lochränder 28.1 bzw. 32.1 der nach oben aufgewulsteten bzw. aufgewölbten Lochränder 28.1 bzw. 32.1 ist geringfügig unterhalb der Oberkante des jeweiligen Rand-Holms 90,1, 90.2 bzw. 86.1, 86.2 angeordnet, beispielweise um etwa 0,5 mm unterhalb.The
Die Gerüstböden 22, 23 haben jeweils an ihren beiden voneinander weg weisenden Stirnseiten fest mit der Lauffläche 24, 25 und fest mit den Längs-Rand-Holmen 86.1, 86.2; 90.1, 90.2 verbundene Abschlussprofile 89, 93 aus Metall. Die Abschlussprofile 89, 93 erstrecken sich im Wesentlichen über die gesamte Breite des jeweiligen Gerüstbodens 22, 23. Die, vorzugsweise als U-Profile gestalteten, Abschlussprofile 89, 93 weisen jeweils eine Höhe auf, die der lichten Weite zwischen der Unterseite des die Lauffläche 24, 25 bildenden Metallblechs 84 und dem jeweiligen Versteifungsprofil bzw. Unter-Holm 88.1, 88.2; 92.1, 92.2 entspricht. Die Abschlussprofile 89, 93 und die Längs-Rand-Holme 86.1, 86.2; 90.1, 90.2 bilden jeweils einen Rahmen aus Metall. Bei dem Gerüstboden 23 sind an dem jeweiligen Abschlussprofil 89 Einhängehilfsmittel 71 in Form von Einhängehaken bzw. Einhängekrallen aus Metall, vorzugsweise durch Schweißen, befestigt, die in einem Querabstand zueinander angeordnet sind. Ein derart ausgestatteter Gerüstboden 23 wird in der Praxis auch mit Stahlboden bezeichnet. Im Unterschied dazu ist der als Überbrückungsgerüstboden bzw. Ergänzungsgerüstboden eingesetzte Gerüstboden 22 ohne spezielle Einhängehilfsmittel ausgestattet. Demgemäß sind auch an dessen Abschlussprofilen 93 keine Einhängekrallen oder dergleichen Einhängehilfsmittel vorgesehen. Ein derartiger Gerüstboden 22 ist in der Praxis auch mit Stahlbolden bezeichnet.The
Die Gerüstböden 22, 23 weisen jeweils eine Lauffläche 24, 25 aus Metallblech 84, vorzugsweise aus Stahlblech, auf, das im Wesentlichen über die ganze Lauffläche 24, 25 verteilt mit im Wesentlichen kreisrunden Durchgangslöchern 27, 31 versehen ist. Die Durchgangslöcher 27, 31 sind also als Kreislöcher 39, 40 gestaltet. Die Durchgangslöcher 27, 31 bilden Durchbrechungen der jeweiligen Laufflächen 24, 25 der Gerüstböden 22, 23 aus. Jeder Gerüstboden 22, 23 weist eine Vielzahl von Durchgangslöchern 27, 31 auf. Die Durchgangslöcher 27, 31 spannen jeweils einen im Wesentlichen oder etwa gleich großen Innendurchmesser 36 auf und sind jeweils von einem aufgewulsteten bzw. aufgewölbten, umlaufenden Lochrand 28; 28.1, 28.2; 32; 32.1, 32.2 begrenzt. Der Innendurchmesser 36 beträgt in den gezeigten bevorzugten Ausführungsbeispielen etwa 13,6 mm, kann jedoch auch um bis zu etwa 0,4 mm kleiner sein. Der Lochrand 28.1; 32.1 eines Teils dieser Durchgangslöcher 27.1; 31.1 ist nach oben und der Lochrand 28.2; 32.2 eines Teils dieser Durchgangslöcher 27.2; 31.2 ist nach unten aufgewulstet bzw. aufgewölbt. Mit anderen Worten sind eine Mehrzahl der Durchgangslöcher 27.1, 31.1 mit nach oberhalb der jeweiligen Lauffläche 24, 25 aufgewulsteten bzw. aufgewölbten Lochrändern 28.1, 32.1 versehen und eine weitere Mehrzahl der Durchgangslöcher 27.2, 31.2 sind mit nach unterhalb der jeweiligen Lauffläche 24, 25 aufgewulsteten bzw. aufgewölbten Lochrändern 28.2, 32.2 versehen. Dabei bilden die Durchgangslöcher 27.1, 31.1 mit nach oben aufgewulsteten bzw. aufgewölbten Lochrändern 28.1, 31.1 Anti-Rutschsicherungen aus und die Durchgangslöcher 27.2, 31.2 mit nach unten aufgewulsteten bzw. aufgewölbten Lochrändern 28.2, 31.2 bilden Ablauföffnungen für Flüssigkeiten, wie Regenwasser oder Farbe und dergleichen aus.The
Zur Sicherung des in
Wie aus
In dem in
Wie in der stark vergrößerten Darstellung in
Die erfindungsgemäße Sicherungsschraube 20 ist in den
Die Länge 77 der Sicherungsschraube 20 beträgt beispielsweise etwa 60 mm bis 62 mm. Die Länge 29.1 des Schraubenschaftes 29 beträgt beispielsweise etwa 57 mm. Das Gewinde 35 der Sicherungsschraube 20 erstreckt sich in Längsrichtung nicht über die gesamte Länge 29.1 des Schraubenschafts 29, sondern nur über eine Teillänge bzw. Gewindelänge 41, beispielsweise von etwa 49 mm. Das Gewinde 35 endet in Richtung des Schraubenkopfes 26 betrachtet in einem Abstand vor dem Schraubenkopf 26 und endet in der entgegen gesetzten Richtung betrachtet in einem Abstand 51.1 vor dem anderen Ende des Schraubenschafts 29. Dieser Abstand 51.1 beträgt beispielsweise etwa 4,0 mm. Auf diese Weise ist ein gewindefreies Einsteckende 51 ausgebildet. Dieses weist eine dem besagten Abstand entsprechende Einstecklänge 51.1 auf. Das Einsteckende des Schraubenschafts 29 weist eine Dicke 45 bzw. einen Außendurchmesser auf, der vorzugsweise dem Kerndurchmesser 47 des Gewindes 35 entspricht. Der Kerndurchmesser 47 des Gewindes 35 beträgt vorzugsweise 10,0 mm.The
Bei dem Gewinde 35 handelt es sich um ein eingängiges Rechtsgewinde in Form eines Trapezgewindes. Es versteht sich jedoch, dass es sich bei dem Gewinde auch um ein Linksgewinde handeln kann. Das Gewinde 35 ist ein nicht selbst schneidendes Gewinde. Das Gewinde 35 weist zwischen benachbarten Gewindeflanken 94.1, 94.2 einen Flankenwinkel 44 auf. Der Flankenwinkel beträgt vorzugsweise 42 Grad. Das Gewinde 35 weist eine Gewindesteigung 43 auf, die vorzugsweise 4,0 mm beträgt. Das Gewinde 35 hat eine Gewindetiefe 48.1, die vorzugsweise 2,0 mm beträgt. Das Gewinde 35 ist radial nach innen bzw. zu der Schraubenlängsachse 33 hin von einem parallel zu der Schraubenlängsachse 29 verlaufenden ebenen Gewindegrund 48 begrenzt und ist radial nach außen von einer Gewindespitze 95 begrenzt, die mit einer parallel zu der Schraubenlängsachse 33 verlaufenden Außenfläche begrenzt ist. Die Breite 49 des Gewindegrunds 48 zwischen zwei Gewindeflanken 94.1 und 94.2 beträgt vorzugsweise 2,0 mm. Es versteht sich, dass der Gewindegrund auch anders ausgebildet sein kann, also beispielsweise konkav gerundet sein kann.
Claims (13)
- Overlapping arrangement of at least two gangplanks (22, 23) for a scaffolding (34), a work platform, a cantilever, a stage or the like, comprising at least one first gangplank (23) of metal and second gangplank (22) of metal, each gangplank (22, 23) having a walk surface (24, 25) of sheet metal (84) provided with substantially round passage holes (27, 31), wherein at least a part of the passage holes (27, 31) of each gangplank (22, 23) is respectively bounded by an encircling hole edge (28, 32) which spans an inner diameter (36) and is bulged out to a hole edge height (72) above or below a surface of the metal sheet (84), wherein the second gangplank (22) is arranged above the first gangplank (23) and overlaps the first gangplank (23) in such a way that the walk surface (24) of the upper, second gangplank (22) at least partly engages over the walk surface (25) of the lower, first gangplank (23), wherein the first gangplank (23) and the second gangplank (22) are fastened to one another by means of a fastening bolt (20) to be secure against displacement relative to one another in a displacement plane (21) extending parallel to the walk surfaces (24, 25) thereof and against lifting off one another, but to be detachable again, wherein the fastening bolt (20) comprises a fastening head (26) having a head height (78) and a bolt shank (29) projecting not only through a passage hole (27), which is bounded by a bulged-out encircling hole edge (28) spanning an inner diameter (36), of the passage holes (27) of the upper, second gangplank (22), but also through a passage hole (31), which is bounded by a bulged-out encircling hole edge (32) spanning an inner diameter (36), of the passage holes (31) of the lower, first gangplank (23), and wherein the fastening head (26) engages over a hole edge of that passage hole (27) of the passage holes (27) of the upper, second gangplank (22) through which the bolt shank (29) of the fastening bolt (22) projects and bears against this hole edge, characterised in that the fastening bolt (20) is a securing screw (20) of metal having a thread (35), that the fastening head (26) is a screw head (26), which has the head height (78), of the securing screw (20), that the bulged-out hole edges (28, 32) are each bounded in encircling manner and as considered in a cross-section containing a passage hole axis (52, 53) by an inner radius (54, 55), that the hole edge height (72) of the hole edges (28, 23) is 3.5 to 4 millimetres, that the head height (78) of the screw head (26) approximately corresponds with the hole edge height (72) or is the same size as or smaller than the hole edge height (72), that the thread (35) has a thread pitch (43) which approximately corresponds with the inner radius (54, 55) or is the same size as or slightly smaller or slightly larger than the inner radius (54, 55), that the thread (35) has a thread base (48), which spans a core diameter (47) and which as considered in the direction of the screw longitudinal axis (33) of the securing screw (20) has a width (49) of approximately 1.5 to 2.5 millimetres or approximately 2 millimetres between adjacent thread flanks, that the securing screw (20) is directly screwed by its thread (35) at least into the said passage hole (31) of the lower, first gangplank (23) without plastic deformation and without elastic enlargement of the hole edge (32) of this passage hole (31), that the geometry of the thread (35) of the securing screw (20) is formed to be matched to the geometry of the bulged-out hole edges (28, 32) in such a way that during screwing of the securing screw (20) into the passage hole (31) of the lower, first gangplank (23) neither a plastic deformation nor an elastic enlargement of the hole edge (32) of this passage hole (31) occurs, and that the second gangplank (22) and the first gangplank (23) are frictionally and mechanically positively clamped together free of play to be secure against lifting off one another and against lateral displacement relative to one another only with the aid of the securing screw (20) bearing by the screw head (26) thereof against the hole edge of the said passage hole (27) of the upper, second gangplank (22), thus free of further auxiliary fastening means and without the assistance of a nut screwed onto the securing screw (20).
- Overlapping arrangement according to claim 1, characterised in that the thread (35) has a thread outer diameter (42) which is slightly, namely by approximately 1.5 to 5.0 percent, greater than the inner diameter (36) of that passage hole (27, 31) into which the securing screw (20) is screwed by the thread (35) thereof.
- Overlapping arrangement according to claim 1 or 2, characterised in that the thread (35) has a thread outer diameter (42) which is slightly, namely by approximately 3.0 percent, greater than the inner diameter (36) of the passage hole (27, 31) into which the securing screw (20) is screwed by the thread (35) thereof.
- Overlapping arrangement according to any one of the preceding claims, characterised in that the inner diameter (36) of the passage hole (27, 31) is approximately 13.0 millimetres to 14.0 millimetres and that the thread outer diameter (42) is approximately 13.7 millimetres to 14.3 millimetres.
- Overlapping arrangement according to any one of the preceding claims, characterised in that the inner diameter (36) of the passage hole (27, 31) is approximately 13.2 to 13.6 millimetres and that the thread outer diameter (42) is approximately 14.0 millimetres.
- Overlapping arrangement according to any one of the preceding claims, characterised in that the thread (35) has a thread pitch (43) which is approximately 0.25 to 0.35 times the inner diameter (36) of the passage hole (27, 31) into which the securing screw (20) is screwed.
- Overlapping arrangement according to any one of the preceding claims, characterised in that the thread (35) has a thread pitch (43) which is approximately 0.3 times the inner diameter (36) of the passage hole (27, 31) into which the securing screw (20) is screwed.
- Overlapping arrangement according to any one of the preceding claims, characterised in that the thread (35) has a thread pitch (43) which is approximately 3.5 millimetres to 5.0 millimetres.
- Overlapping arrangement according to any one of the preceding claims, characterised in that the thread (35) has a thread pitch (43) which is approximately 4.0 millimetres.
- Overlapping arrangement according to any one of the preceding claims, characterised in that the thread (35) has a flank angle (44) which is approximately 35 degrees to 50 degrees.
- Overlapping arrangement according to any one of the preceding claims, characterised in that the thread (35) has a flank angle (44) which is approximately 42 degrees.
- Overlapping arrangement according to any one of the preceding claims, characterised in that the core diameter (47) is approximately 9 to 11 millimetres or approximately 10 millimetres.
- Scaffolding (34), work platform, cantilever or stage with a first overlapping arrangement (30) according to any one of the preceding claims and with a second overlapping arrangement (30) according to any one of the preceding claims, characterised in that the first gangplank (23) extends at a height and that a third gangplank (23) extends approximately at the same height at a horizontal spacing from the first gangplank (23), wherein the second gangplank (22) is provided as a bridging-over gangplank (22) for bridging over a space between the first gangplank (23) and the third gangplank (23) so that the walk surface (24) of the bridging-over gangplank (22) engages over both the walk surface (25) of the first gangplank (23) and the walk surface (25) of the third gangplank (23), wherein the bridging-over gangplank (22) together with the first gangplank (23) forms the first overlapping arrangement (30) and wherein the bridging-over gangplank together with the third gangplank (23) forms the second overlapping arrangement (30), so that the bridging-over gangplank (22) is not only frictionally and mechanically positively clamped free of play with the first gangplank (23) with the help of the securing screw (20), but is also frictionally and mechanically positively clamped free of play with the third gangplank (23) with the help of a corresponding or like securing screw (20).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL13153410T PL2642045T3 (en) | 2012-03-21 | 2013-01-31 | Overlapping arrangement of at least two gangplanks |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE202012101000U DE202012101000U1 (en) | 2012-03-21 | 2012-03-21 | Overlapping arrangement of at least two running tracks |
Publications (3)
Publication Number | Publication Date |
---|---|
EP2642045A2 EP2642045A2 (en) | 2013-09-25 |
EP2642045A3 EP2642045A3 (en) | 2014-06-25 |
EP2642045B1 true EP2642045B1 (en) | 2017-10-18 |
Family
ID=47683587
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP13153410.9A Active EP2642045B1 (en) | 2012-03-21 | 2013-01-31 | Overlapping arrangement of at least two gangplanks |
Country Status (6)
Country | Link |
---|---|
US (1) | US9435128B2 (en) |
EP (1) | EP2642045B1 (en) |
AU (1) | AU2013201665B2 (en) |
DE (1) | DE202012101000U1 (en) |
ES (1) | ES2654555T3 (en) |
PL (1) | PL2642045T3 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE202024104153U1 (en) | 2024-07-24 | 2024-08-09 | Marcel Scanu | Impact fastener and fastening arrangement with at least one such impact fastener |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20130256060A1 (en) * | 2012-03-29 | 2013-10-03 | Safway Services, Llc | Scaffold Plank Structure |
US10836576B2 (en) * | 2017-04-29 | 2020-11-17 | J&L Wire Cloth, LLC | Storage decks and storage rack assemblies including same |
FR3078130B1 (en) * | 2018-02-22 | 2020-03-06 | Fp Business Invest | JUNCTION DEVICE FOR CONVEYOR BELTS |
JP7161181B2 (en) * | 2018-08-31 | 2022-10-26 | 有限会社ショウワエンジニアリング | metal step stool |
US20190063085A1 (en) * | 2018-10-31 | 2019-02-28 | Canyon Metal Scaffolding Engineering Limited | Bridge plank applicable to construction sites |
US10968039B2 (en) | 2019-07-29 | 2021-04-06 | J&L Wire Cloth, LLC | Storage decks and storage rack assemblies including same |
US11993943B2 (en) * | 2020-02-07 | 2024-05-28 | Southern Coastal Contractors & Services, Inc. | Support system for use in construction |
CN112049387A (en) * | 2020-08-06 | 2020-12-08 | 中青建安建设集团有限公司 | Anti-slip scaffold |
US12044022B2 (en) * | 2021-04-09 | 2024-07-23 | Grady F. Smith & Co., Inc. | Locking pin for multifunction scaffold |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH07229287A (en) * | 1993-12-24 | 1995-08-29 | Japan Steels Internatl Kk | Expansion scaffolding device |
EP1767791A1 (en) * | 2005-09-21 | 2007-03-28 | HILTI Aktiengesellschaft | Clamping device for gratings |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
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DE2754226A1 (en) | 1977-12-06 | 1979-06-07 | Eberhard Layher | METAL TREATMENT |
DE2916826A1 (en) | 1979-04-26 | 1980-11-06 | Eberhard Layher | METAL RUNNING PLAN |
DE7912134U1 (en) | 1979-04-26 | 1992-04-02 | Layher, Eberhard, 7129 Güglingen | Metal gangway |
CA1310041C (en) * | 1988-06-14 | 1992-11-10 | John C. Preston | Scaffolding |
DE202004021196U1 (en) | 1990-09-08 | 2007-03-08 | Wilhelm Layher Verwaltungs-Gmbh | Steel plank especially for scaffold frames has reinforcing edge profiles with a folded construction and with grip profiles |
WO1992006259A1 (en) * | 1990-10-09 | 1992-04-16 | John Clement Preston | Locking joint for tubing and shadecloth clip |
JPH07259219A (en) * | 1994-03-28 | 1995-10-09 | Matsushita Electric Works Ltd | Partition |
CA2158199C (en) * | 1995-09-13 | 1999-11-23 | Austin Phillip Page | Scaffolding plank |
DE19858969A1 (en) | 1998-12-19 | 2000-06-21 | Layher W Vermogensverw Gmbh | Walking plank made of metal |
DE19858970A1 (en) | 1998-12-19 | 2000-06-21 | Layher W Vermogensverw Gmbh | Metal gangplank |
DE10254033A1 (en) | 2002-11-20 | 2004-06-03 | Wilhelm Layher Vermögensverwaltungs-Gmbh | Building construction scaffolding platform is a shallow sheet metal upturned box with small and elongated holes in sidewalls |
DE20318090U1 (en) | 2003-11-22 | 2004-04-15 | Wilhelm Layher Vermögensverwaltungs-Gmbh | Scaffolding floor fuse mounting bolts |
DE202008003126U1 (en) | 2008-03-05 | 2008-05-29 | Rux Gmbh | Device for securing at least two scaffolding planks |
DE202011002618U1 (en) * | 2011-02-10 | 2012-05-11 | Thyssenkrupp Xervon Gmbh | Fastening bolts for securing system-free scaffold planks made of wood and / or steel and scaffold system with such a fastening bolt |
-
2012
- 2012-03-21 DE DE202012101000U patent/DE202012101000U1/en not_active Expired - Lifetime
-
2013
- 2013-01-31 ES ES13153410.9T patent/ES2654555T3/en active Active
- 2013-01-31 PL PL13153410T patent/PL2642045T3/en unknown
- 2013-01-31 EP EP13153410.9A patent/EP2642045B1/en active Active
- 2013-03-15 US US13/834,419 patent/US9435128B2/en active Active
- 2013-03-19 AU AU2013201665A patent/AU2013201665B2/en active Active
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07229287A (en) * | 1993-12-24 | 1995-08-29 | Japan Steels Internatl Kk | Expansion scaffolding device |
EP1767791A1 (en) * | 2005-09-21 | 2007-03-28 | HILTI Aktiengesellschaft | Clamping device for gratings |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE202024104153U1 (en) | 2024-07-24 | 2024-08-09 | Marcel Scanu | Impact fastener and fastening arrangement with at least one such impact fastener |
Also Published As
Publication number | Publication date |
---|---|
US9435128B2 (en) | 2016-09-06 |
EP2642045A3 (en) | 2014-06-25 |
US20130248290A1 (en) | 2013-09-26 |
DE202012101000U1 (en) | 2013-03-25 |
EP2642045A2 (en) | 2013-09-25 |
ES2654555T3 (en) | 2018-02-14 |
PL2642045T3 (en) | 2018-03-30 |
AU2013201665A1 (en) | 2013-10-10 |
AU2013201665B2 (en) | 2015-05-07 |
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