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
  • E04G7/30—Scaffolding bars or members with non-detachably fixed coupling elements
  • E04G7/32—Scaffolding bars or members with non-detachably fixed coupling elements with coupling elements using wedges
• • 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
  • E04G7/30—Scaffolding bars or members with non-detachably fixed coupling elements
  • E04G7/302—Scaffolding bars or members with non-detachably fixed coupling elements for connecting crossing or intersecting bars or members
  • E04G7/306—Scaffolding bars or members with non-detachably fixed coupling elements for connecting crossing or intersecting bars or members the added coupling elements are fixed at several bars or members to connect
  • E04G7/307—Scaffolding bars or members with non-detachably fixed coupling elements for connecting crossing or intersecting bars or members the added coupling elements are fixed at several bars or members to connect with tying means for connecting the bars or members

Definitions

• the invention relates to a connecting element for arrangement on a scaffold rod, in particular on a stand which is to be aligned vertically in a scaffold structure, which is preferably of disc-shaped or plate-shaped configuration and projects from the scaffold rod as a circumferential collar, and which is used for fastening further scaffold rods, particularly horizontally when the scaffold structure is built up
• a scaffold structure which is preferably of disc-shaped or plate-shaped configuration and projects from the scaffold rod as a circumferential collar
• further scaffold rods particularly horizontally when the scaffold structure is built up
• the invention relates to a scaffold rod equipped with at least one such connecting element.
• a scaffold rod in particular a scaffold rod, which is provided as a stand or stick to be arranged vertically in the scaffold, usually has a plurality of connecting elements arranged equidistantly from one another, which, when the corresponding scaffold rod is aligned vertically, protrude from this scaffold rod in the horizontal plane like circumferential collars.
• a scaffolding can be constructed in a modular manner by connecting vertical scaffolding poles which are set up at intervals from one another by further scaffolding poles to be arranged horizontally.
• these latches have connection heads at their ends, which usually comprise the plate-shaped or disk-shaped connection element on the associated stand, for example in a fork-like manner, that is to say they can overlap and reach under.
• the connecting head like the connecting element, can be brought into a corresponding position with respect to the wedge receptacles, namely holes or openings through which a connecting wedge can be struck to lock and connect these two scaffolding rods, which wedges the upper side of the Nerkindungskopfes of the bolt, then passes through the Neritatiselement and then the lower part of the connecting head of the bolt.
• adjacent vertical stands are usually connected to one another by means of diagonals, which thus connect the connecting element of one stand on a higher level to a connecting element of the other stand on a lower level.
• the connecting heads of these diagonals can in principle be designed similarly to the connecting heads of the bolts, the connecting heads of the diagonals being angled or angled with respect to the scaffold rod of the diagonal due to the oblique orientation to the level of the connecting element.
• the connecting head of the diagonal is usually fastened in another wedge receptacle of the connecting element, which is arranged next to the wedge holder for the bolt.
• a connecting element can be designed like a spoked wheel, that is to say it has a type of hub with a central opening through which the scaffold rod of the stand is guided, and webs or spokes which project radially outward and which separate adjacent wedge receptacles from one another and the hub with a circumferential, Connect concentric wheel tires or a rim to the hub.
• the same size, in particular congruent Keilau frames are often evenly distributed around the hub, and often eight wedge receptacles, which therefore have an angular distance of 45 ° to one another in relation to the center of the connecting element.
• wedge receptacles arranged at such angular intervals also allows, for example, round armor, for example the construction of a scaffold around a tower or the like. With the help of 45 ° bends of the horizontal plane around the building to be converted or the like, a self-contained octagon with a corresponding scaffold can then be built up.
• the wedge receptacles are not of the same size, but for example a smaller wedge receptacle and a larger, ie elongated wedge receptacle alternate over the circumference of the connecting element.
• An elongated wedge holder which thus follows a larger or longer section of a circular arc around the center of the connecting element, can serve, for example with regard to retrofitting, for a more continuous orientation of a bar on the connecting element to a previous bar. Not only octagons, but polygons with a larger number of corners can be created for scaffolding, so that the scaffold contour in the horizontal plane conforms even more continuously to a circular shape.
• the disadvantage of the elongated wedge receptacles is that the wedge passed through this wedge receptacle has greater freedom of movement and thus the corresponding bolt is not forced into a fixed and desired orientation by the size adjustment of the wedge receptacle to the extent of the wedge. This is particularly disadvantageous if no rounding is to be carried out, but a right-angled scaffolding is to be built, because then the connection element with the design and arrangement of its wedge receptacles may not prescribe a defined right angle.
• the width of the wedge receptacle ie the dimension of the wedge receptacle on the circular arc section around the center of the connecting element, does not match the width of the connecting wedge too precisely itself
• the connecting wedges are usually provided with a kind of bolt or peg, so that the connecting wedges are captively arranged so that they can move on the connecting heads of the scaffolding rods.
• the wedge holder must provide the necessary space so that, for example, the wedge holder can essentially have the cross-section of an orange segment widening radially from the inside out, but the side boundaries of this wedge holder extending on the radii should, for example, be slightly curved outwards in order to to provide the necessary space for the bolts or pins mentioned in this area.
• the webs separating the wedge receptacles from one another could thus thin in this area.
• a sufficient material thickness for the stability of the connecting element is required for such webs even in the thinnest area.
• the slightly barrel-shaped design of the wedge holder does not impair the secure fixing of the connecting wedge when connecting, for example, the latch to a stand, because the latch is ultimately clamped between two stands by this connection and the connecting wedge is thereby essentially or even exclusively on the radial outside of the Wedge holder is present, while the hub-side limitation of the wedge holder could be unaffected by the connecting wedge.
• the invention has for its object to provide a connecting element of the type mentioned, which with a stable and material-saving design of the connecting element a larger variety of defined orientation options stipulation of scaffolding poles with this connecting element, that is, at the same time more diverse alignment options and still allows alignment fixation.
• a connecting element which is characterized in that at least one (further) wedge receptacle compartment is formed or delimited in at least one of the wedge receptacles by structuring their contour in a radial direction.
• a wedge holder is divided into several wedge receiving compartments of the same size or not the same size, preferably two or three, this division advantageously not being made by the formation of further continuous webs which would require a material thickness and a corresponding space due to the described wedge formation, in particular because of the pin, is not available, but by structuring the contour of the wedge holder.
• the radially outer side limitation of the wedge holder, against which the wedge rests under tension in the connected state is particularly important.
• structures are provided in particular in this side wall area of the wedge receptacle, which on the one hand specify lateral compartment boundaries for the connecting wedge, so that a defined and ultimately also fixed alignment of the connecting wedges and the scaffolding rods connected above them is possible and at the same time allows for a variety of alignment options Because, for example, existing eight wedge receptacles can be divided into three wedge receptacle compartments by the structuring, so that ultimately twenty-four defined alignment options are given, which are essentially only at an angular distance of 15 ° to one another, so that in particular a rounding is easier without losing the necessary alignment security when building a right-angled scaffold.
• the structuring according to the invention can comprise a recess.
• the recess itself can form a wedge receiving compartment, that is to say, for example, it can be designed as a groove that corresponds to a compartment width.
• a relatively flat concave curvature which at least also limits and centers a possible wandering movement of the connecting wedge, which, as mentioned, is under radially directed tension forces.
• a flat concave curvature could additionally be provided as a further centering, for example for aligning a diagonal, in a relatively wider remaining wedge receiving compartment, while an adjacent narrower wedge receiving compartment is designed to be more sharply defined in order to receive the connecting wedge of a bolt.
• the structuring comprises a tooth projecting inwards into the wedge holder, which can form, so to speak, a kind of web stub for dividing and separating two adjacent wedge holder compartments within one wedge holder.
• a connecting element according to the invention does not necessarily have to have a disk or wheel shape, but could also have a type of cloverleaf shape or the like, for example, in the horizontal plane.
• the connecting element could also deviate from a disk shape in the vertical direction, that is to say, for example, be spherical.
• a next development of the invention provides that teeth on opposite sides of the wedge holder or a wedge holder project mutually opposite inwards.
• the radially outer limitation of the wedge holder is particularly important for the placement and orientation of the connecting wedge, so that a corresponding structuring on the radially inner side of the wedge holder could be omitted.
• structuring on the radial inside of the wedge holder could be useful for the insertion of the connecting wedge during the connection process, because in this way the corresponding wedge holder compartment is better defined and in particular jamming or jamming of the wedge in an undesired and possibly unsafe intermediate position is avoided by, for example, the space remaining between two teeth projecting against one another is so short that tilting of the wedge into this space is prevented.
• connection operations of this kind are carried out very quickly when the scaffolding is being erected, and in some cases also with relative use of force, so that there is otherwise actually the danger that a connecting wedge will be fixed in the wrong position by force.
• the inventive element can preferably be designed in the manner of a spoked wheel and have identical or different, alternating wedge receptacles.
• elongated wedge receptacles in particular, it could be advantageous to subdivide them into a relatively narrower wedge receiving compartment and a relatively wide wedge receiving compartment, the narrower wedge receiving compartment being able to form an end section of the elongated wedge receiving member.
• the wider wedge receiving compartment can be provided, for example, for fastening a diagonal and the diagonal Wedge holder compartment for fastening a latch. If the narrower wedge receiving compartments lie opposite one another in pairs, a rectangular alignment of latches on this connecting element is sufficiently predetermined and ensured even in the presence of only such elongated wedge receiving compartments.
• the outer contour of the connecting element does not have to be circular, but can have bulges in the radial direction in order to save material, which for structural reasons can be in particular in the area of the webs.
• Such curvatures also promote the stackability of scaffolding poles with such connecting elements and limit the rolling ability of such scaffolding poles if, for example, they are placed on scaffolding planks at a greater height.
• FIG. 1 schematically and partially in section and in a broken view, a connecting element on a scaffold rod, 2 in a representation corresponding to FIG. 1, a connecting element with different positions of connecting wedges in a wedge receptacle of the connecting element,
• FIG. 3 in an enlarged view of a connecting element in plan view
• Fig. 12a) and b) various forms of execution of connecting elements, each in a perspective view and in plan view.
• connection node 1 of a scaffold in a partially sectioned side view, the connection node essentially consisting of a disk-shaped or plate-shaped connection element 3 on a scaffold rod or a scaffold tube 2.
• the scaffold rod 2 is a stand which is to be arranged vertically in a scaffold structure and which carries a plurality of connecting elements 3 at regular intervals.
• These connecting elements 3 are used for fastening further scaffolding bars to be arranged horizontally, namely so-called bolts, as indicated by reference number 4.
• the connecting element is used to fasten so-called diagonals, which run obliquely at an angle between vertical and horizontal and are fastened to the connecting element in a manner similar to the indicated bolt 4.
• the connecting element 3 or that shown in FIG. 1 forms Connection node actually a node in which different scaffolding poles of a scaffold meet within a scaffold, in particular a modular scaffold.
• connection 6 which is uniform for all bolts 4 and, as mentioned, is basically the same for all diagonals.
• the connecting elements 3 are therefore standardized, in particular congruent to one another. As can be seen, for example, at 7 in FIG. 2, they are recessed for receiving the connecting wedges 8, that is to say they have holes or perforations arranged around their circumference as wedge receptacles for connecting wedges 8.
• the connecting wedges 8 When fastening bolts 4 or diagonal tubes to the stand 2 or its connecting element 3, the connecting wedges 8 are seated in heads 9 which are welded to the ends 5 of the bolts 4.
• the heads 9 are forked and each have a fork tine 10, 11, between which the connecting element 3 can be inserted or is inserted.
• a guide for the connecting wedge 8 is located in the fork tines 10, 11. If the connecting wedge 8 is driven from top to bottom in the illustration in FIG. 1, the head 9 and thus the bolt 4 are braced between the wedge surface 13 , the connecting element 3 and the outer casing 14 of the perpendicular stator 2. For this purpose, the ends 15, 16 of the two fork tines 10, 11 are supported on the tubular casing 14. The connecting wedge 8 rests with a radially outward clamping force on the radial outside of the wedge seat of the connecting element 3.
• Fig. 3 shows that the connecting elements 3 are designed in the manner of spoke wheels. They have an inner pitch circle, which can be viewed as a hub 17 and encloses the stand 2 as shown in FIG. 1.
• the outer pitch circle of the connecting element 3 forms the rim or the wheel tire 18.
• this wheel tire 18 forms an abutment for the connecting wedge 8 of the wedge connection 6, which, as already mentioned above, under the radially outward clamping force is pulled to this inner peripheral surface 19, which at the same time forms the radially outer boundary of the wedge receptacle through which the connecting wedge 8 is guided.
• Fig. 3 the axes of symmetry of the wedge receptacles are indicated and designated 38 to 45. Since all of the wedge supports are congruent in the exemplary embodiment in FIG. 3, the axes of symmetry of the opposing wedge supports coincide.
• the symmetry axes 39, 43, 41, 45 and 40, 44, 38, 42 intersecting at right angles form two Axes that are rotated 45 ° against each other. The result is eight wedge receptacles, each with three wedge receptacle compartments and eight webs separating these wedge receptacles.
• the connecting elements 3 are produced, for example, from sheet metal blanks, for example by punching out the wedge supports 30 to 37. Accordingly, they have flat and parallel boundary surfaces 46, 47 in the exemplary embodiment in FIGS. 1 to 3, which are connected to one another via a cylindrical surface 48.
• the connecting elements 3 can, however, also be manufactured as castings, for example. They do not necessarily have to have plane-parallel surfaces and a cylindrical circumference. In particular, bulges can be provided on the circumference, which facilitate the stackability of the scaffolding bars and reduce the ability of the scaffolding bars to roll when they are deposited.
• the spokes 22 to 29 run radially from the center M of the cross section of the stator 2.
• each wedge receptacle on the ring surface 19 of the inside of the wheel tire 18, which result from the fact that teeth with tooth flanks 53 radially inward from this inside or ring surface 19 , 54 protrude.
• the counter surface or contact surface for the connecting wedge 8 In the deepest of these relatively formed grooves is the counter surface or contact surface for the connecting wedge 8.
• the two external grooves 49, 51 are so narrow, taking into account the movement play for the connecting wedge 8, that a defined wedge position results in them, which inevitably corresponds with the aligns this connecting wedge bolt 4 or the diagonal to be fastened in a defined orientation when driving in the connecting wedge 18.
• This alignment is particularly necessary for the bars 4, especially if rectangular scaffolds are to be built up in the plan view, because it is important that the bars 4 which strike the connecting element 3 in the horizontal plane are aligned at right angles to one another.
• the alignment of the diagonals is not that important.
• the diagonals could therefore be fastened, for example, adjacent to a bolt 4 in the subsequent groove, in particular a wider groove 50, which allows a certain amount of leeway.
• the large number of existing grooves 49 to 51 or the teeth projecting into the wedge receptacles 30 to 37 subdivide the wedge receptacles 30 to 37 into a corresponding number, namely in the exemplary embodiment 24, of the wedge receiving compartments.
• This large number of wedge receiving compartments thus also offers the possibility of building a circular armor, for example around a cylindrical container or tower, on the circular arc of which the frame can be adapted accordingly.
• the external grooves are specified wider, namely here specifically with a width of 8 mm, while the central groove has a width of only 6 mm.
• the center grooves could be used for the compulsory exact right-angled alignment of the horizontal bars 4, specifically when building a scaffold which is rectangular in plan view.
• the grooves are realized with a toothing, the pitch circle of which is denoted by 52 in FIG. 3.
• the guide surface for the wedge surface forms the tooth gap base.
• the tooth flanks 53, 54 diverge outwards and form sliding surfaces on which the connecting wedge 8 slides with its edges and is thereby automatically engaged in the tooth gap.
• each web 22 to 29 requires a certain material thickness and material width for reasons of stability that there is insufficient space within the wedge receptacles, which also left sufficient space or sufficient width for the connecting wedges 8 in the wedge receiving compartments.
• the connecting wedges are usually provided with transverse bolts or pegs which protrude beyond the sides of the wedges in order to prevent the connecting wedges 8 from slipping out of the connecting heads 9 and therefore the connecting wedges 8 on these connecting heads cannot be lost, although for the Wedge connection sufficiently mobile to fasten.
• All of the exemplary embodiments have in common that wedge receptacles are arranged distributed over the circumference of the connecting elements, at least some of these wedge receiving means per connecting element having grooves and / or teeth for the formation of wedge receiving compartments in these subdivided wedge receiving means.
• wedge supports are of the same size.
• wedge receptacles of different sizes or differently extending over circular arc sections alternate with one another.
• the smaller wedge supports can preferably be used for fastening bars 4 and / or diagonals, while the elongated wedge supports can be used for fastening diagonals, in particular when constructing a scaffold that is rectangular in plan view.
• the toothed wedge receptacles are partly in wedge receiving compartments of the same size, but in some cases also differently sized wedge receiving compartments.
• the smaller wedge-receiving compartment can preferably be used to fasten the struts to be adjusted more strictly, while the elongated wedge-receiving compartments can preferably serve to fasten the diagonals.
• the larger wedge receptacles or wedge receptacle compartments can also be used for attaching bolts for a round armor and thus offer a greater possibility of variation in the round armor.
• elongated wedge receptacles can have specialist training either at one end or at both ends.
• these specialist designs are formed in the same end of the respective wedge receptacle in a sense of rotation.
• the teeth arranged on the outer surfaces 19 can also have opposing teeth on the inside of the wedge receptacles, so that such teeth project in pairs in the radial direction.
• the transition between the respective technical training is additionally narrowed, so that in particular it is prevented that in this transitional area a connection wedge 8 is hammered in, possibly in a tilted manner, but is securely threaded into the provided wedge receiving compartment by the existing additional guidance of the wedge 8.

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• Engineering & Computer Science (AREA)
• Architecture (AREA)
• Mechanical Engineering (AREA)
• Civil Engineering (AREA)
• Structural Engineering (AREA)
• Mutual Connection Of Rods And Tubes (AREA)
• Clamps And Clips (AREA)

Priority Applications (2)

Applications Claiming Priority (4)

Publications (1)

Family

ID=26053659

Family Applications (1)

Country Status (6)

Cited By (2)

Citations (2)

• 2000
  • 2000-06-05 CA CA 2310930 patent/CA2310930A1/en not_active Abandoned
  • 2000-06-06 SK SK1774-2001A patent/SK287088B6/sk not_active IP Right Cessation
  • 2000-06-06 AU AU56780/00A patent/AU5678000A/en not_active Abandoned
  • 2000-06-06 CZ CZ20014317A patent/CZ300767B6/cs not_active IP Right Cessation
  • 2000-06-06 WO PCT/EP2000/005185 patent/WO2000075459A1/de active Application Filing
  • 2000-06-07 PL PL340578A patent/PL204289B1/pl not_active IP Right Cessation

Patent Citations (2)

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