EP0665348B1 - Telescopic strut for building construction - Google Patents

Telescopic strut for building construction Download PDF

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Publication number
EP0665348B1
EP0665348B1 EP94120095A EP94120095A EP0665348B1 EP 0665348 B1 EP0665348 B1 EP 0665348B1 EP 94120095 A EP94120095 A EP 94120095A EP 94120095 A EP94120095 A EP 94120095A EP 0665348 B1 EP0665348 B1 EP 0665348B1
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EP
European Patent Office
Prior art keywords
support according
telescopic tube
tube
subregion
support
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.)
Expired - Lifetime
Application number
EP94120095A
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German (de)
French (fr)
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EP0665348A1 (en
Inventor
Gerhard Dingler
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Individual
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Individual
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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
    • E04G11/00—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
    • E04G11/36—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for floors, ceilings, or roofs of plane or curved surfaces end formpanels for floor shutterings
    • E04G11/48—Supporting structures for shutterings or frames for floors or roofs
    • 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
    • E04G25/00—Shores or struts; Chocks
    • E04G25/04—Shores or struts; Chocks telescopic
    • E04G25/06—Shores or struts; Chocks telescopic with parts held together by positive means
    • 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
    • E04G25/00—Shores or struts; Chocks
    • E04G25/04—Shores or struts; Chocks telescopic
    • E04G25/06—Shores or struts; Chocks telescopic with parts held together by positive means
    • E04G25/061—Shores or struts; Chocks telescopic with parts held together by positive means by pins
    • 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
    • E04G25/00—Shores or struts; Chocks
    • E04G25/04—Shores or struts; Chocks telescopic
    • E04G25/06—Shores or struts; Chocks telescopic with parts held together by positive means
    • E04G25/065—Shores or struts; Chocks telescopic with parts held together by positive means by a threaded nut
    • 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
    • E04G25/00—Shores or struts; Chocks
    • E04G25/04—Shores or struts; Chocks telescopic
    • E04G25/06—Shores or struts; Chocks telescopic with parts held together by positive means
    • E04G25/066—Shores or struts; Chocks telescopic with parts held together by positive means by a wedge

Definitions

  • the invention relates to a support according to the preamble of claim 1.
  • Such supports are used e.g. for slab formwork, slab tables, load towers or the like. But they can also be used for numerous other purposes, where it is necessary to absorb force at a certain point and to transmit it to another point, as far as these points can be connected at least approximately by a straight line.
  • a support for construction purposes which has an inner telescopic tube and an outer telescopic tube.
  • the inner telescopic tube is connected via an articulated connection to a support plate on which the support is supported relative to the ground.
  • a U-shaped head plate for receiving support beams is provided on an outer telescopic tube.
  • the outer telescopic tube has an inner diameter, the through hole of which guides the inner telescopic tube.
  • the inner and outer telescopic tube On the inner and outer telescopic tube, a plurality of openings arranged in the cylinder wall distributed over their longitudinal axis are provided, the through bores of the inner and outer wall being able to be arranged congruently with one another, so that a plug pin can be inserted through the openings of the inner and outer wall .
  • the inner telescopic tube can be secured to the outer telescopic tube in a defined position.
  • this support has the disadvantage that the entire load to be carried is transmitted via the outer telescopic tube made of aluminum to a plug pin, which is supported in a pair of transverse bores in the support. As a result, the entire force is transmitted to the socket pin via the reveal. This leads to high shear forces acting on the plug pin, which can result in the pin shearing off. Furthermore, the reveal area of the hole in the outer telescopic tube can be damaged due to the steel pin and the softer aluminum telescopic tube.
  • a support for construction purposes is known from the document DE-U-88 02 297 U1, which has an inner and outer telescopic tube.
  • the inner telescopic tube is guided with little play over a pipe section arranged separately on the outer telescopic tube.
  • the pipe section has an external thread on which a nut device is rotatably mounted.
  • the pipe section receives a pipe holder via a surrounding sleeve, which grips around the outer telescopic pipe at one end region and fixes this to the pipe holding device via a fastening device.
  • this support has the disadvantage that the coupling piece between the outer telescopic tube and the inner telescopic tube results in a weakening of the load-bearing capacity, since high notch effects and kink loads occur in the area of the tube holder for receiving one end of the outer telescopic tube.
  • this two-part design of the outer telescopic tube with a coupling piece to guide the inner telescopic tube is unsuitable for use on construction sites due to the high degree of contamination.
  • Such supports which are made of structural steel, have the further disadvantage that they are difficult to handle.
  • the object of the invention is to provide a support in which handling by a single person is made possible and at the same time it can be ensured that a safe load bearing and a long service life is given, in particular in the telescopic area of the support.
  • this support according to the invention can be manufactured inexpensively and the advantages of steel can be combined with the advantages of aluminum.
  • the external thread is on the one hand long enough to give the necessary guidance and on the other hand short enough so that this very expensive part does not influence the costs too much.
  • the surface pressure on the supporting thread flank is sufficiently small to also allow normal aluminum, e.g. to use seawater-resistant aluminum.
  • the nut device is particularly precise, so that the internal thread and the external thread of the nut device and the external thread of the pipe piece mesh well.
  • the features of claim 9 reinforce a link that could be weak in the chain of effects, namely the high surface pressure between the perforated wall and the plug pin inserted through it.
  • the thickening can be achieved by the features of claim 10, e.g. another layer is welded onto the flat material, on the side of which later gives off the inside of the inner telescopic tube.
  • the thickening can be achieved during rolling, so that no gap arises between the wall of the inner telescopic tube and the doubling.
  • the thickening can also be carried out subsequently.
  • the load can be transferred from the tube into the socket in a particularly simple manner and at the same time still lead there.
  • this collar edge captures the end face area, absorbs forces and serves as a positioning aid before and during welding.
  • the pipe can continue to be guided and positioned.
  • the features of claim 21 ensure that one does not inadvertently install the support in the lowered state, because a further lowering would then no longer be possible and one would have to loosen the mother device in a harmful manner with rough blows.
  • the inner telescopic tube can be guided over the entire length and in a simple manner without great material expenditure and without great extrusion tool expenditure over the entire length.
  • this guide adapts particularly well to the circular cylindrical outer shape of the inner telescopic tube.
  • frames, railing brackets, connections for outer tubes or the like can be attached to the outer telescopic tube.
  • connection frames on one support are connected at exactly the same height as on another support, so that, unless you want something else, the frame, the outer tube or the like is always horizontal or perpendicular to the support.
  • a support 11 is for the most part and in the manner shown in the drawing symmetrical to a geometric longitudinal axis 12 and extends longitudinally this.
  • the support 11 has an outer telescopic tube 13 and an inner telescopic tube 14. Both are drawn in the non-telescoped state in FIG. 1.
  • the support 11 can be used in the position shown, ie the outer telescopic tube 13 above. But you can also use it so that the inner telescopic tube is on top.
  • the inner telescopic tube 14 is made of steel. Its lower end face is welded onto a support plate 16 which runs perpendicular to the geometric longitudinal axis 12.
  • the outside tube diameter is 62.3 mm and the material is 4 mm thick.
  • the weight is 57 kg / running meter.
  • the cross-sectional area is 7.33 cm 2 .
  • the second degree torsional surface moment I T is 62.6 cm 4 .
  • the moment of inertia I x is 31.27 cm 4 .
  • the section modulus is W x is 10.04 cm 3 and the radius of inertia is 2.066 cm. Depending on the desired properties, these values can be changed by plus / minus 50%.
  • the inner telescopic tube 14 has pairs of cross holes 17, 18, etc. with a center distance of 10 cm.
  • the diameter of each pair of cross holes 18, 19, etc. is 18 mm.
  • the inner telescopic tube 14 has an outer surface 21.
  • the outer telescopic tube 13 is made of aluminum. It essentially comprises a tube 23, a socket 24, an extruded profile 26 and a support plate 27.
  • the tube 23 is circular cylindrical on the inside and has an inner diameter of 65 mm, so that the overall diameter of the inner telescopic tube 14 remains a total play of 2.7 mm .
  • the outer diameter of the tube 23 made of aluminum is 75 mm.
  • an oval slot pair 32 is provided, which lies congruently one behind the other in the viewing direction of FIG. 1. It is 20 mm wide, ie wider than the diameter of the transverse bore pairs 17, 18 etc. Its length along the geometrical longitudinal axis 12 is 135 mm, ie approximately 1 1/2 distances between the Cross bore pairs 17, 18.
  • the plug pin 19 inserted through one of the cross bore pairs can thus also cross the oval slot pair 32.
  • the nut ring 22 is seated on the thread 28, to which a toggle 33 is pivotally attached, which, if it is perpendicular to the geometric longitudinal axis 12, can increase the moment at which the nut ring 22 can be rotated on the thread 28.
  • the tube 32 merges in one piece into a circular cylindrical section 34, which has the same diameter as the tube 23, and has an outer diameter of 75 mm and in which the thread turn 28 ends up becoming ever flatter.
  • the circular cylindrical section 34 thus has approximately one eighth the length of the entire tube 23.
  • the circular cylindrical section 34 is approximately half of its height in the socket 24. This is a hollow part. It has an annular disk wall 36 directed downwards in this drawing, which is coaxial with the geometric longitudinal axis 12 and is perpendicular to the latter.
  • the outer wall of the circular cylindrical section 34 bears against its coaxial through hole 37.
  • a weld seam 38 is seated all around in the corner between the lower surface of the disk wall 26 and the outer surface of the circular cylindrical section 34.
  • the disk wall 36 merges upwards into a circular cylindrical wall section 41 which is coaxial with the longitudinal axis 12 and then merges into a positioning ring 42 on the inside.
  • This has a coaxial through hole 43, which grips the outer wall of the cylindrical section 34 practically without play.
  • a coaxial plate 44 which has a substantially larger diameter than the wall section 41 and which merges upwards into a coaxial plate edge 46.
  • the plate rim 46 has the shape of a regular octagon similar to a screw head or a nut.
  • a coaxial base 47 is provided parallel to the plate 44 and at a short distance therefrom, which integrally merges into the plate rim 46 on its circumference, from the upwardly directed end face 48 of which there is a distance of 11 mm.
  • the bottom 47 has a coaxial hole 49, the diameter of which corresponds to the inner diameter of the inner telescopic tube 14.
  • the upward end face 51 of the tube 23 stands on the lower surface of the bottom 47.
  • the lower end face of the outer telescopic tube stands on the floor 47.
  • the bottom 47 and the plate 44 can also be one piece, i.e. without the drawn annulus between the two.
  • the outer telescopic tube 13 has an octagonal outline according to FIG. 5, which fits into the octagonal course of the plate rim 46.
  • the plate rim 46 is welded to the lower end region of the outer telescopic tube 13 by an aluminum weld.
  • the outer telescopic tube 13 has the symmetry shown in FIG. 5. It is not a regular octagon. Rather, longer walls 52 and four shorter walls 53 are provided here. In the corner areas 54 they are at 135 °. 5 is to scale in terms of both length and angle.
  • FIG. 5 the clear height of FIG. 102 mm.
  • the whole thing can also be imagined as consisting of a square consisting of the longer walls 52, in which, however, the shorter walls 53 were used for communication.
  • the longer walls 52 have on their inner side in the middle longitudinal strips 56, the inner surface 57 of which lies on a coaxial circle 58 which is slightly smaller than the outer diameter of the inner telescopic tube 14, so that there are four guide areas here.
  • the longitudinal strips 56 are very flat. At 1:30 a.m., 4:30 a.m., 7:30 a.m. and 10:30 a.m.
  • fastening profiles 59 which are integral with the outer telescopic tube 13, stiffen it and define grooves 61 between them which are open at the edges.
  • the outline of the inner region 62 of the grooves 61 corresponds to the cross section of the head of a hammer head screw which is still displaceable therein and the outer region 63 corresponds in width to the width of the head of the hammer head screw when this head is perpendicular to the plane of the drawing of FIG. 5, so that one insert the head, then turn it in the inner region 62 by 90 °, so that a fluid locking takes place and the shaft of the hammer head screw extends perpendicular to the longer walls 52 outwards through the outer region 63.
  • the fastening profile can be imagined from a T-profile with a very short, wide central part 64, which grows out of the corner areas 54 and for saving weight and for forming wall thicknesses of essentially the same thickness, has an inner recess 66 which has an oval shape and further from a cross member 67 which merges into two wings 68, 69 on the outside.
  • the wings 68, 69 and cross members 67 follow also an octagon, which however - in contrast to the inner octagon - has angularly equidistant corners 71.
  • a depression 72 lies between two corners 71, so that defined systems of attachments are possible.
  • the wings 68, 69 are at 45 ° to the X-axis 73 and the Y-axis 74.
  • Such a profile has an moment of inertia about the X and Y axes of 175.70 cm 4 , a section modulus of 33.5 cm 3 , around both the X and Y axes, a cross-sectional area of 18.1 cm 2 and an average weight of 5.22 kg per linear meter.
  • stops 76 are welded into the grooves, at regular intervals. These stops 76 are located in all four grooves 61. With them as a stop one has a measure of whether e.g. a bar to be attached, which is to be horizontal, or the like is actually horizontal, because if the stops 76 are at the same height in all supports, then they are actually horizontal when both ends are against stops. However, it is still possible not to run horizontally if this is desired. The stops 76 also give additional stability where the attachments are screwed on.
  • the diameter of the tube 23 is significantly smaller than the transverse dimension of the outer telescopic tube 13.
  • the tube 23 is adapted to the circumference of the inner telescopic tube 14.
  • the interior of the outer telescopic tube 13 is somewhat larger than the outer diameter of the inner telescopic tube 14. Nevertheless, there is a good flow of force and shape between the two telescopic tubes, since they are positively guided against one another in many places. Without the grooves 61 used for the attachment and the fastening profiles 59, the outer telescopic tube 13 could also be made considerably simpler, for example square, hexagonal, round or the like.
  • Bumps on the aluminum outer telescopic tube 13 make little difference because the majority of the bumps are absorbed by the wings 68, 69, which can be easily bent back, but also because the area is outside the inner recess 66 can bend without passing on the entire deformation inwards.
  • the values given for the outer telescopic tube 13 starting with the moments of inertia and ending with the maximum weight can be varied by plus / minus 50%.
  • a thread 28 made of aluminum is more sensitive than a thread made of steel.
  • a quick-lowering device 75 is used here in addition to any lubrication of the thread turn 28.
  • the socket pin shown in FIG. 1 is of a circular cylindrical perimeter in such a way that two notches 77, 78 directed upwards are provided. Their shortest distance is smaller than the inner diameter of the inner telescopic tube. Their greatest distance is larger than the outer diameter of the inner telescopic tube 14, so that its wall can fall into the notch 77 and diametrically opposite in the notch 78.
  • the edges of the notches 77, 78 are slightly chamfered so that the upper edge of the reveal of a pair of transverse bores 18 easily finds its way into it.
  • the left region 79 is larger than the diameter of a pair of transverse bores 18, so that the plug pin 19 cannot fall out to the right.
  • the support plate 16 is high, absorbs the force exerted by the ceiling, passes it through the wall of the inner telescopic tube 14 via the upper reveal area 81 of the cross-bore pairs 18 into the socket pin 19. From there, the force reaches the upper edge 85 of the nut ring 22 and from there into the thread 28, etc. The support plate 16 is thus fixed in its upper position. For lowering, the plug pin 19 is moved to the left according to FIG. 7.
  • the reveal area 81 then falls into the notches 77, 78 and, according to the notch depth, the support plate 16 falls far enough by the distance 82.
  • the nut ring 22 can now be rotated slightly and the support 11 can be easily removed after the nut ring 22 has been lowered sufficiently .
  • a force accumulator not shown, for example a spring, automatically moves the plug pin 19 to the right and brings it back into its position shown in FIG. 6.
  • a return spring here. This retrieval prevents the support 11 from being used accidentally as shown in FIG. 7. From from this position you could not lower it a second time. The difference between the two altitudes is very small, and this can be overlooked when working.
  • the spring can strike the step 83 on the one hand and the outer surface of the outer telescopic tube 13 on the other hand.
  • a number of other solutions are also conceivable. In any case, it is necessary that a return spring is provided.
  • the support 11 can also be used in the reverse position relative to FIG. 1.
  • the position shown is preferred for use.
  • these supports can be 1 m and longer than the man who carries them. If he now tries to raise the support, he must not constantly push the support plate 16 in front of him. Rather, he must be able to position the support 11 vertically even without an abutment. This is all the more successful the lower the focus of the overall arrangement.
  • the inner telescopic tube 14 is smaller, it is heavier than the outer telescopic tube 13, so that the common center of gravity is in any case considerably below the upper end of the inner telescopic tube and thus this center of gravity is sufficiently deep that the operator supports 11 can also be handled easily and alone when erecting. There is no use if the device is light in and of itself. It must also be possible for an individual to erect them.
  • the entire force must flow through the upper reveal area 81, which in practice has a very small area, because the diameter of the plug pin 19 is smaller than the diameter of the transverse bore pairs 18. It is therefore this reveal area 81 probably the weakest link in the chain. 8, this can be remedied by rolling a material accumulation 86 in the area of the transverse bore 64, which increases the load-bearing reveal area depending on the extent of the material accumulation 86 along the central axis 87. With double the length, half the specific surface pressure is obtained. The material accumulation 86 goes in a bulbous shape, where it has space anyway and does not interfere.
  • the inner telescopic tube 14 can have an outer diameter of 40-100 mm. The rest of the construction must then be adapted accordingly.
  • the thread 28 could also have resulted from the fact that it was cut or that it was cast or that it was made of plastic and was glued to the tube 23.
  • the support has the described quick lowering or an equivalent quick lowering, the possibly extremely high flank output on the thread flanks 31 is reduced.
  • relatively soft material such as aluminum, plastic or reinforced plastic.
  • the load that a column can support may reach up to 60 KN. Due to the rapid lowering, however, this is only a load to be absorbed statically and not at the same time a load that causes friction on the thread flank 31.
  • the surface pressure on the load-bearing thread flank 31 must not exceed 115 N / mm 2 . This results at least indirectly in the angle of inclination of the flank, the number of load-bearing threads, the number of internal threads of the nut ring 22 and, to a certain extent, the pitch.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)

Abstract

The support with a load-carrying capacity greater than 30kN and a height greater than 1 m incorporates telescopic inner and outer tubes which are provided with support plates (16,27) at their free ends. At the other end the outer tube has a coarse outside thread carrying a nut mechanism. The inner and outer tubes (14,13) are made respectively of steel and aluminium. The thread (28) is on a tube section (23) whose bore accommodates the inner tube with a small clearance. The diameter and length of the section (26) of the outer tube are larger than the corresponding parameters of the section (23). The tube sections (26) and (23) are joined by a sleeve (24). The inner tube (14) has the form of a circular cylinder to which the inner surface of the tube section (23) is complementary. The inner tube is provided with pairs of radial holes with regular axial distances. The thread (28), whose length lies between one and four such distances, is a rolled trapezoidal thread. The nut mechanism is, in essence, a steel casting. The wall of the inner tube is thickened in the region of the hole pairs.

Description

Die Erfindung betrifft eine Stütze gemäß dem Oberbegriff des Anspruchs 1. Solche Stützen verwendet man z.B. für Deckenschalungen, Deckentische, Lasttürme oder dergleichen. Man kann sie aber auch zu zahlreichen anderen Zwecken verwenden, wo es notwendig ist, Kraft an einer bestimmten Stelle aufzunehmen und sie an eine andere Stelle weiterzuleiten, soweit diese Stellen wenigstens ungefähr durch eine Gerade verbunden werden können.The invention relates to a support according to the preamble of claim 1. Such supports are used e.g. for slab formwork, slab tables, load towers or the like. But they can also be used for numerous other purposes, where it is necessary to absorb force at a certain point and to transmit it to another point, as far as these points can be connected at least approximately by a straight line.

Aus der Druckschrift AU-A-537 327 geht eine Stütze für Bauzwecke hervor, die ein inneres Teleskoprohr und ein äußeres Teleskoprohr aufweist. Das innere Teleskoprohr ist über eine Gelenkverbindung mit einer Auflageplatte verbunden, auf der sich die Stütze gegenüber dem Untergrund abstützt. An dem gegenüberliegenden Ende ist an einem äußeren Teleskoprohr eine U-förmig ausgebildete Kopfplatte zur Aufnahme von Trägerbalken vorgesehen. Das äußere Teleskoprohr weist einen Innendurchmesser auf, dessen Durchgangsloch das innere Teleskoprohr führt.From document AU-A-537 327 a support for construction purposes emerges, which has an inner telescopic tube and an outer telescopic tube. The inner telescopic tube is connected via an articulated connection to a support plate on which the support is supported relative to the ground. At the opposite end, a U-shaped head plate for receiving support beams is provided on an outer telescopic tube. The outer telescopic tube has an inner diameter, the through hole of which guides the inner telescopic tube.

An dem inneren und äußeren Teleskoprohr sind eine Vielzahl von über deren Längsachse verteilt angeordneten Öffnungen in der Zylinderwand vorgesehen, wobei die Durchgangsbohrungen der inneren und äußeren Wand deckungsgleich zueinander angeordnet werden können, so daß ein Steckbolzen durch die Öffnungen der inneren und äußeren Wand gesteckt werden kann. Dadurch kann das innere Teleskoprohr zum äußeren Teleskoprohr in einer definierten Lage gesichert sein.On the inner and outer telescopic tube, a plurality of openings arranged in the cylinder wall distributed over their longitudinal axis are provided, the through bores of the inner and outer wall being able to be arranged congruently with one another, so that a plug pin can be inserted through the openings of the inner and outer wall . As a result, the inner telescopic tube can be secured to the outer telescopic tube in a defined position.

Diese Stütze weist jedoch den Nachteil auf, daß die gesamte zu tragende Last über das äußere aus Aluminium bestehende Teleskoprohr auf einen Steckbolzen übertragen wird, der in einem Querbohrungspaar der Stütze sich abstützt. Dadurch wird die gesamte Kraft über die Lochleibung auf den Steckbolzen übertragen. Dies führt dazu, daß hohe Abscherkräfte auf den Steckbolzen wirken, wodurch eine Abscherung des Bolzens erfolgen kann. Des weiteren kann der Leibungsbereich des Loches im äußeren Teleskoprohr aufgrund des aus Stahl ausgebildeten Steckbolzens und dem gegenüber weicheren Aluminium-Teleskoprohrs beschädigt werden.However, this support has the disadvantage that the entire load to be carried is transmitted via the outer telescopic tube made of aluminum to a plug pin, which is supported in a pair of transverse bores in the support. As a result, the entire force is transmitted to the socket pin via the reveal. This leads to high shear forces acting on the plug pin, which can result in the pin shearing off. Furthermore, the reveal area of the hole in the outer telescopic tube can be damaged due to the steel pin and the softer aluminum telescopic tube.

Des weiteren ist aus der Druckschrift DE-U-88 02 297 U1 eine Stütze für Bauzwecke bekannt, welche ein inneres und äußeres Teleskoprohr aufweist. Das innere Teleskoprohr ist mit wenig Spiel über ein an dem äußeren Teleskoprohr getrennt angeordnetes Rohrstück geführt. Das Rohrstück weist ein Außengewinde auf, auf dem eine Muttervorrichtung drehbar gelagert ist. Das Rohrstück nimmt über eine Umfassungsmuffe einen Rohrhalter auf, der das äußere Teleskoprohr an einem Endbereich umgreift und dieses über eine Befestigungsvorrichtung zu dem Rohrhalten festlegt.Furthermore, a support for construction purposes is known from the document DE-U-88 02 297 U1, which has an inner and outer telescopic tube. The inner telescopic tube is guided with little play over a pipe section arranged separately on the outer telescopic tube. The pipe section has an external thread on which a nut device is rotatably mounted. The pipe section receives a pipe holder via a surrounding sleeve, which grips around the outer telescopic pipe at one end region and fixes this to the pipe holding device via a fastening device.

Diese Stütze weist jedoch den Nachteil auf, daß durch das Kupplungsstück zwischen dem äußeren Teleskoprohr und dem inneren Teleskoprohr eine Schwächung der Belastbarkeit gegeben ist, da hohe Kerbwirkungen und Knickbelastungen im Bereich der Rohrhalterung zur Aufnahme des einen Endes des äußeren Teleskoprohres auftreten. Darüber hinaus ist diese zweiteilige Ausgestaltung des äußeren Teleskoprohres mit einem Kupplungsstück, um das innere Teleskoprohr zu führen, für den Baustelleneinsatz aufgrund des hohen Verschmutzungsgrades ungeeignet. Derartige Baustützen, die aus einem Baustahl hergestellt sind, weisen des weiteren den Nachteil auf, daß sie schwer zu handhaben sind.However, this support has the disadvantage that the coupling piece between the outer telescopic tube and the inner telescopic tube results in a weakening of the load-bearing capacity, since high notch effects and kink loads occur in the area of the tube holder for receiving one end of the outer telescopic tube. In addition, this two-part design of the outer telescopic tube with a coupling piece to guide the inner telescopic tube is unsuitable for use on construction sites due to the high degree of contamination. Such supports, which are made of structural steel, have the further disadvantage that they are difficult to handle.

Aufgabe der Erfindung ist es, eine Stütze zu schaffen, bei der eine Handhabung durch eine einzige Person ermöglicht ist und gleichzeitig sichergestellt werden kann, daß eine sichere Lastaufnahme und eine hohe Standzeit insbesondere im teleskopierbaren Bereich der Stütze gegeben ist.The object of the invention is to provide a support in which handling by a single person is made possible and at the same time it can be ensured that a safe load bearing and a long service life is given, in particular in the telescopic area of the support.

Diese Aufgabe wird erfindungsgemäß durch die Merkmale des neuen Anspruchs 1 gelöst. Aufgrund der Verwendung des äußeren Teleskoprohrs aus Aluminium und dem inneren Teleskoprohr aus Stahl ist ermöglicht, daß eine erhebliche Gewichtsreduzierung gegeben ist, so daß eine einzige Person auch größere Stützen handhaben kann. Des weiteren ist aufgrund der Ausbildung eines Rohrstücks, welches an einen Strangpreß-Teilbereich sich anschließt und ein Außengewinde aufweist, eine Erhöhung der Stabilität und der Betriebssicherheit gegeben. Dies beruht insbesondere darauf, daß an dem Außengewinde eine Muttervorrichtung sitzt, welche die Kraftübertragung von dem äußeren Teleskoprohr auf das innere Teleskoprohr bewirkt. Dadurch können die Kräfte von dem äußeren Teleskoprohr über das Rohrstück auf die Muttervorrichtung übertragen werden, wodurch die Kräfte über eine größere Fläche übertragen werden können. Dadurch kann eine gleichmäßige Kraftverteilung gegeben sein, die eine punktförmige Belastung der Lochleibung eines äußeren Teleskoprohrs, wie dies aus dem Stand der Technik bekannt ist, vermieden werden.This object is achieved by the features of the new claim 1. Due to the use of the outer telescopic tube made of aluminum and the inner telescopic tube made of steel, it is possible to achieve a considerable weight reduction is given so that a single person can handle larger supports. Furthermore, due to the formation of a pipe section which adjoins an extruded section and has an external thread, there is an increase in stability and operational reliability. This is based in particular on the fact that a nut device is seated on the external thread, which causes the force transmission from the outer telescopic tube to the inner telescopic tube. As a result, the forces can be transmitted from the outer telescopic tube via the pipe section to the nut device, as a result of which the forces can be transmitted over a larger area. This can result in a uniform force distribution, which avoids punctiform loading of the embrasure of an outer telescopic tube, as is known from the prior art.

Des weiteren ist aufgrund der Zwischenschaltung einer Fassungsmuffe zwischen einem Strangpreß-Teilbereich und dem Rohrstück eine sichere Verbindung geschaffen, die eine hohe Kraftübertragung ermöglicht. Dadurch kann gleichzeitig eine Reduzierung des Querschnitts zwischen dem Strangpreß-Teilbereich und dem Rohrstück erzielt werden, ohne daß eine erhebliche Kerbwirkung auftritt, die die Traglast der Stütze schwächen könnte.Furthermore, due to the interposition of a socket between an extruded section and the pipe section, a secure connection is created, which enables high power transmission. As a result, a reduction in the cross section between the extruded section and the pipe section can be achieved at the same time without a significant notching effect occurring which could weaken the load capacity of the support.

Des weiteren kann diese erfindungsgemäße Stütze preiswert hergestellt werden und die Vorteile des Stahls können mit den Vorteilen des Aluminiums verbunden werden.Furthermore, this support according to the invention can be manufactured inexpensively and the advantages of steel can be combined with the advantages of aluminum.

Durch die Merkmale des Anspruchs 2 kann man die Technologie und die Verwendungsart der stählernen Teleskoprohre weiterhin verwenden und die auftretenden Kräfte zumindest teilweise gut in das äußere Teleskoprohr einleiten.Due to the features of claim 2, the technology and the type of use of the steel telescopic tubes can continue to be used and the forces which occur are at least partially introduced well into the outer telescopic tube.

Durch die Merkmale des Anspruchs 3 ist das Außengewinde einerseits genügend lang um die notwendige Führung abzugeben und andererseits genügend kurz, damit dieser durchaus teure Teil die Kosten nicht zu sehr beeinflußt.Due to the features of claim 3, the external thread is on the one hand long enough to give the necessary guidance and on the other hand short enough so that this very expensive part does not influence the costs too much.

Durch die Merkmale des Anspruchs 4 erreicht man eine Verfestigung der Gewindegänge und auch eine höhere Festigkeit des Rohrstücks.Due to the features of claim 4 one achieves a consolidation of the threads and also a higher strength of the pipe section.

Durch die Merkmale des Anspruchs 5 erhält man ein besonders tragfähiges und baustellengerechtes Gewinde, dem es wenig ausmacht, wenn sein Kopf ein Hammerschlag trifft.Due to the features of claim 5, a particularly load-bearing thread suitable for the construction site is obtained, which does not matter much if its head hits a hammer blow.

Durch die Merkmale des Anspruchs 6 wird die Flächenpressung auf der tragenden Gewindeflanke genügend klein, um auch normales Aluminium, wie z.B. seewasserbeständiges Aluminium zu verwenden.Due to the features of claim 6, the surface pressure on the supporting thread flank is sufficiently small to also allow normal aluminum, e.g. to use seawater-resistant aluminum.

Durch die Merkmale des Anspruchs 7 erreicht man eine gute Paarung zwischen Stahl mit seinen ihm eigenen Eigenschaften und Aluminium mit dessen Eigenschaften.The features of claim 7 achieve a good pairing between steel with its own properties and aluminum with its properties.

Durch die Merkmale des Anspruchs 8 wird die Muttervorrichtung besonders genau, so daß das Innengewinde und das Außengewinde der Muttervorrichtung und das Außengewinde des Rohrstücks gut kämmen.Due to the features of claim 8, the nut device is particularly precise, so that the internal thread and the external thread of the nut device and the external thread of the pipe piece mesh well.

Durch die Merkmale des Anspruchs 9 verstärkt man ein Glied, das in der Wirkungskette schwach sein könnte, nämlich die hohe Flächenpressung zwischen der Lochwand und dem hindurchgesteckten Steckbolzen.The features of claim 9 reinforce a link that could be weak in the chain of effects, namely the high surface pressure between the perforated wall and the plug pin inserted through it.

Durch die Merkmale des Anspruchs 10 kann man die Verdickung erreichen, indem man z.B. auf das Flachmaterial, auf dessen Seite, die später die Innenseite des inneren Teleskoprohrs abgibt, eine weitere Schicht aufschweißt.The thickening can be achieved by the features of claim 10, e.g. another layer is welded onto the flat material, on the side of which later gives off the inside of the inner telescopic tube.

Durch die Merkmale des Anspruchs 11 kann man die Verdickung beim Walzen erzielen, so daß zwischen der Wand des inneren Teleskoprohres und der Aufdoppelung kein Spalt entsteht.Due to the features of claim 11, the thickening can be achieved during rolling, so that no gap arises between the wall of the inner telescopic tube and the doubling.

Durch die Merkmale des Anspruchs 12 kann man die Verdickung auch nachträglich vornehmen.Due to the features of claim 12, the thickening can also be carried out subsequently.

Durch die Merkmale des Anspruchs 13 erhält man eine besonders steife Fassungsmuffe, die leicht maßgenau im Aluminiumdruckguß hergestellt werden kann.Due to the features of claim 13, a particularly rigid socket is obtained, which can easily be made to size in die-cast aluminum.

Durch die Merkmale des Anspruchs 14 erreicht man eine einfache und dauerhafte sowie genügend billige Verbindung zwischen den hier genannten Teilen.Due to the features of claim 14, a simple and permanent and sufficiently cheap connection between the parts mentioned here is achieved.

Durch die Merkmale des Anspruchs 15 wird die Verschweißung besonders einfach.The features of claim 15 make the welding particularly simple.

Durch die Merkmale des Anspruchs 16 kann man die Last aus dem Rohr besonders einfach in die Fassungsmuffe überleiten und dort zugleich noch führen.Due to the features of claim 16, the load can be transferred from the tube into the socket in a particularly simple manner and at the same time still lead there.

Durch die Merkmale des Anspruchs 17 hat man einen ziemlich direkten Kraftfluß vom einen Teleskoprohr zum andem, nämlich lediglich durch den Boden hindurch.By the features of claim 17 you have a fairly direct flow of force from one telescopic tube to the other, namely only through the floor.

Durch die Merkmale des Anspruchs 18 faßt dieser Bundrand den Stirnflächenbereich, nimmt Kräfte auf und dient als Positionierhilfe vor und während des Schweißens.Due to the features of claim 18, this collar edge captures the end face area, absorbs forces and serves as a positioning aid before and during welding.

Durch die Merkmale des Anspruchs 19 kann man das Rohr weiterhin führen und positionieren.Due to the features of claim 19, the pipe can continue to be guided and positioned.

Durch die Merkmale des Anspruchs 20 vermeidet man, gerade für das Aluminiumgewinde, daß man beim Lösen der Muttervorrichtung sehr hohe Reibkräfte auf das Aluminiumgewinde überträgt.The features of claim 20, especially for the aluminum thread, avoid that very high frictional forces are transferred to the aluminum thread when the nut device is released.

Durch die Merkmale des Anspruchs 21 erreicht man, daß man nicht versehentlich die Stütze im abgesenkten Zustand einbaut, denn ein weiteres Absenken wäre dann nicht mehr möglich und man müßte mit groben Schlägen in schädlicher Weise die Muttervorrichtung lösen.The features of claim 21 ensure that one does not inadvertently install the support in the lowered state, because a further lowering would then no longer be possible and one would have to loosen the mother device in a harmful manner with rough blows.

Durch die Merkmale des Anspruchs 23 kann man das innere Teleskoprohr auf der ganzen Länge und auf einfache Weise ohne großen Materialaufwand und ohne großen Strangpreß-Werkzeugaufwand auf der gesamten Länge führen.Due to the features of claim 23, the inner telescopic tube can be guided over the entire length and in a simple manner without great material expenditure and without great extrusion tool expenditure over the entire length.

Durch die Merkmale des Anspruchs 24 paßt sich diese Führung der kreiszylindrischen Außenform des inneren Teleskoprohres besonders gut an.Due to the features of claim 24, this guide adapts particularly well to the circular cylindrical outer shape of the inner telescopic tube.

Durch die Merkmale des Anspruchs 25 kann man an das äußere Teleskoprohr Rahmen, Geländerhalter, Anschlüsse für Außenrohre oder dgl. befestigen.Due to the features of claim 25, frames, railing brackets, connections for outer tubes or the like can be attached to the outer telescopic tube.

Durch die Merkmale des Anspruchs 26 erhält man einen besonders einfachen, aber dennoch unverdrehbaren, Anschluß.Due to the features of claim 26, a particularly simple but non-rotatable connection is obtained.

Durch die Merkmale des Anspruchs 27 ist man sicher, daß Bauteile, wie z.B. Anschlußrahmen an der einen Stütze in genau der gleichen Höhe angeschlossen werden, wie an einer anderen Stütze, so daß, sofem man anderes nicht will, der Rahmen, das Außenrohr oder dgl. immer horizontal verläuft bzw. rechtwinklig zur Stütze verläuft.The features of claim 27 ensure that components such as e.g. Connection frames on one support are connected at exactly the same height as on another support, so that, unless you want something else, the frame, the outer tube or the like is always horizontal or perpendicular to the support.

Die Erfindung wird nunmehr anhand bevorzugter Ausführungsbeispiele beschrieben. In der Zeichnung zeigen:

Fig. 1
Die teilweise abgebrochene Darstellung einer stehenden Stütze,
Fig. 2
den unteren Bereich des äußeren Teleskoprohrs aus Fig. 1 in vergrößerter Darstellung,
Fig. 3
eine Gewindedarstellung des Gewindes von Fig. 2,
Fig. 4
eine geschnittene Darstellung der Fassungsmuffe,
Fig. 5
einen Querschnitt gemäß der Linie 5.5 in Fig. 1,
Fig. 6
eine schematische Darstellung einer Schnellabsenkvorrichtung im nicht abgesenkten Zustand,
Fig. 7
die Vorrichtung nach Fig. 6 im abgesenkten Zustand,
Fig. 8
der Querschnitt durch ein inneres Teleskoprohr eines zweiten Ausführungsbeispiels im geschnittenen Zustand, wobei zwei Arten der Verwirklichung in einer einzigen Figur gezeichnet sind.
The invention will now be described on the basis of preferred exemplary embodiments. The drawing shows:
Fig. 1
The partially broken representation of a standing prop,
Fig. 2
the lower region of the outer telescopic tube of FIG. 1 in an enlarged view,
Fig. 3
2 shows a thread representation of the thread of FIG. 2,
Fig. 4
a sectional view of the socket,
Fig. 5
2 shows a cross section along line 5.5 in FIG. 1,
Fig. 6
1 shows a schematic illustration of a rapid lowering device in the non-lowered state,
Fig. 7
6 in the lowered state,
Fig. 8
the cross section through an inner telescopic tube of a second embodiment in the cut state, two types of realization being drawn in a single figure.

Eine Stütze 11 ist zu einem erheblichen Teil und in der aus der Zeichnung ersichtlichen Weise symmetrisch zu einer geometrischen Längsachse 12 und erstreckt sich längs dieser. Die Stütze 11 hat ein äußeres Teleskoprohr 13 und ein inneres Teleskopfrohr 14. In Fig. 1 sind beide im nicht teleskopierten Zustand gezeichnet. Die Stütze 11 kann in der gezeichneten Lage verwendet werden, d.h. das äußere Teleskoprohr 13 oben. Man kann sie aber auch so verwenden, daß das innere Teleskoprohr oben ist.A support 11 is for the most part and in the manner shown in the drawing symmetrical to a geometric longitudinal axis 12 and extends longitudinally this. The support 11 has an outer telescopic tube 13 and an inner telescopic tube 14. Both are drawn in the non-telescoped state in FIG. 1. The support 11 can be used in the position shown, ie the outer telescopic tube 13 above. But you can also use it so that the inner telescopic tube is on top.

Das innere Teleskoprohr 14 ist aus Stahl. Seine untere Stirnfläche ist auf einer Aufstandsplatte 16 festgeschweißt, die senkrecht zur geometrischen Längsachse 12 verläuft. Bei diesem Ausführungsbeispiel ist der Rohrdurchmesser außen 62,3 mm und das Material ist 4 mm dick.The inner telescopic tube 14 is made of steel. Its lower end face is welded onto a support plate 16 which runs perpendicular to the geometric longitudinal axis 12. In this embodiment, the outside tube diameter is 62.3 mm and the material is 4 mm thick.

Das Gewicht sind 57 kg/laufender Meter. Die Querschnittsfläche sind 7,33 cm2. Das Torsionsflächenmoment zweiten Grades IT ist 62,6 cm4. Das Trägheitsmoment Ix ist 31,27 cm4. Das Widerstandsmoment ist Wx ist 10,04 cm3 und der Trägheitsradius ist 2,066 cm. Je nach den gewünschten Eigenschaften können diese Werte um plus/minus 50 % verändert werden. Das innere Teleskoprohr 14 hat Querbohrungspaare 17, 18 usw. mit einem Mittenabstand von 10 cm. Der Durchmesser jedes Querbohrungspaars 18, 19 usw. ist 18 mm. Durch sie hindurch gesteckt werden kann ein stählerner Steckbolzen 19, der weiter oben gestrichelt dargestellt ist und der einen Durchmesser von 16 mm hat. Das innere Teleskoprohr 14 hat eine Außenfläche 21. Mit Ausnahme eines aus Gußstahl bestehenden Mutterrings 22 ist das äußere Teleskoprohr 13 aus Aluminium. Es umfaßt im wesentlichen ein Rohr 23, eine Fassungsmuffe 24, ein Strangpreßprofil 26 und eine Aufstandsplatte 27. Das Rohr 23 ist innen kreiszylindrisch und hat einen Innendurchmesser von 65 mm, so daß zum Außendurchmesser des inneren Teleskoprohrs 14 ein Insgesamtspiel von 2,7 mm bleibt. Der Außendurchmesser des aus Aluminium bestehenden Rohrs 23 ist 75 mm. Es sind Gewindegänge 28 von Trapezgewindequerschnitt aufrolliert, deren Tiefe bis zum Nutgrund 29 etwa 2 mm beträgt und deren Neigung 30 zur Horizontalen beträgt 7°, so daß an der tragenden Gewindeflanke 31 eine praktisch nicht mehr verminderbare Flächenpressung entsteht. In dem in Zeichnungslage unteren und mittleren Bereich des Rohrs 23 ist ein Ovalschlitz-Paar 32 vorgesehen, das in Blickrichtung von Fig. 1 deckungsgleich hintereinander liegt. Es ist 20 mm breit, d.h. breiter als der Durchmesser der Querbohrungspaare 17, 18 usw. Seine Länge längs der geometrischen Längsachse 12 beträgt 135 mm, d.h. etwa 1 1/2 Abstände der Querbohrungspaare 17, 18. Der durch eines der Querbohrungspaare gesteckte Steckbolzen 19 kann damit auch das Ovalschlitzpaar 32 durchqueren. Auf dem Gewinde 28 sitzt der Mutterring 22, an dem schwenkbar ein Knebel 33 befestigt ist, der, wenn er senkrecht zur geometrischen Längsachse 12 steht, das Moment vergrößern kann, mit dem der Mutterring 22 auf dem Gewinde 28 gedreht werden kann.The weight is 57 kg / running meter. The cross-sectional area is 7.33 cm 2 . The second degree torsional surface moment I T is 62.6 cm 4 . The moment of inertia I x is 31.27 cm 4 . The section modulus is W x is 10.04 cm 3 and the radius of inertia is 2.066 cm. Depending on the desired properties, these values can be changed by plus / minus 50%. The inner telescopic tube 14 has pairs of cross holes 17, 18, etc. with a center distance of 10 cm. The diameter of each pair of cross holes 18, 19, etc. is 18 mm. A steel plug pin 19, which is shown in dashed lines above and which has a diameter of 16 mm, can be inserted through it. The inner telescopic tube 14 has an outer surface 21. With the exception of a nut ring 22 made of cast steel, the outer telescopic tube 13 is made of aluminum. It essentially comprises a tube 23, a socket 24, an extruded profile 26 and a support plate 27. The tube 23 is circular cylindrical on the inside and has an inner diameter of 65 mm, so that the overall diameter of the inner telescopic tube 14 remains a total play of 2.7 mm . The outer diameter of the tube 23 made of aluminum is 75 mm. There are threads 28 of trapezoidal thread cross section rolled up, the depth to the groove base 29 is about 2 mm and the inclination 30 to the horizontal is 7 °, so that a practically no less surface pressure arises on the load-bearing thread flank 31. In the lower and middle region of the tube 23 in the drawing position, an oval slot pair 32 is provided, which lies congruently one behind the other in the viewing direction of FIG. 1. It is 20 mm wide, ie wider than the diameter of the transverse bore pairs 17, 18 etc. Its length along the geometrical longitudinal axis 12 is 135 mm, ie approximately 1 1/2 distances between the Cross bore pairs 17, 18. The plug pin 19 inserted through one of the cross bore pairs can thus also cross the oval slot pair 32. The nut ring 22 is seated on the thread 28, to which a toggle 33 is pivotally attached, which, if it is perpendicular to the geometric longitudinal axis 12, can increase the moment at which the nut ring 22 can be rotated on the thread 28.

Oben geht das Rohr 32 in einen kreiszylindrischen Abschnitt 34 einstückig über, der gleichen Durchmesser wie das Rohr 23 hat, und einen Außendurchmesser von 75 mm hat und in dem der Gewindegang 28 immer flacher werdend ausläuft. Der kreiszylindrische Abschnitt 34 hat also etwa ein Achtel der Länge des gesamten Rohrs 23. Der kreiszylindrische Abschnitt 34 steckt etwa bis zur Hälfte seiner Höhe in der Fassungsmuffe 24. Diese ist ein Hohlteil. Sie hat eine in dieser Zeichnung nach unten gerichtete kreisringförmige Scheibenwand 36, die koaxial zur geometrischen Längsachse 12 ist und senkrecht zu dieser steht. An ihrem koaxialen Durchgangsloch 37 liegt die Außenwand des kreiszylindrischen Abschnitts 34 an. Eine Schweißnaht 38 sitzt im Eck rundum zwischen der Unterfläche der Scheibenwand 26 und der Außenfläche des kreiszylindrischen Abschnitts 34. Die Scheibenwand 36 geht nach oben in einen kreiszylindrischen Wandabschnitt 41 über, der koaxial zur Längsachse 12 ist und dann innen zu in einen Positionierring 42 übergeht. Dieser hat eine koaxiales Durchgangsloch 43, welches die Außenwand des kreiszylindrischen Abschnitts 34 praktisch spiellos faßt. Oberhalb des Positionierrings 42 ist ein koaxialer Teller 44 vorgesehen, der einen wesentlich größeren Durchmesser als der Wandabschnitt 41 hat und der nach oben außen in einen koaxialen Tellerrand 46 übergeht. Der Tellerrand 46 hat die Form eines regelmäßigen Achtecks ähnlich einem Schraubenkopf oder einer Mutter. Parallel zum Teller 44 und mit geringem Abstand hiervon ist ein koaxialer Boden 47 vorgesehen, der an seinem Umfang einstückig in den Tellerrand 46 übergeht, von dessen nach oben gerichteter Stirnfläche 48 einen Abstand von 11 mm hat. Der Boden 47 hat ein koaxiales Loch 49, dessen Durchmesser mit dem Innendurchmesser des inneren Teleskoprohrs 14 übereinstimmt. Die nach oben gerichtete Stirnfläche 51 des Rohrs 23 steht auf der Unterfläche des Bodens 47 auf.At the top, the tube 32 merges in one piece into a circular cylindrical section 34, which has the same diameter as the tube 23, and has an outer diameter of 75 mm and in which the thread turn 28 ends up becoming ever flatter. The circular cylindrical section 34 thus has approximately one eighth the length of the entire tube 23. The circular cylindrical section 34 is approximately half of its height in the socket 24. This is a hollow part. It has an annular disk wall 36 directed downwards in this drawing, which is coaxial with the geometric longitudinal axis 12 and is perpendicular to the latter. The outer wall of the circular cylindrical section 34 bears against its coaxial through hole 37. A weld seam 38 is seated all around in the corner between the lower surface of the disk wall 26 and the outer surface of the circular cylindrical section 34. The disk wall 36 merges upwards into a circular cylindrical wall section 41 which is coaxial with the longitudinal axis 12 and then merges into a positioning ring 42 on the inside. This has a coaxial through hole 43, which grips the outer wall of the cylindrical section 34 practically without play. Provided above the positioning ring 42 is a coaxial plate 44 which has a substantially larger diameter than the wall section 41 and which merges upwards into a coaxial plate edge 46. The plate rim 46 has the shape of a regular octagon similar to a screw head or a nut. A coaxial base 47 is provided parallel to the plate 44 and at a short distance therefrom, which integrally merges into the plate rim 46 on its circumference, from the upwardly directed end face 48 of which there is a distance of 11 mm. The bottom 47 has a coaxial hole 49, the diameter of which corresponds to the inner diameter of the inner telescopic tube 14. The upward end face 51 of the tube 23 stands on the lower surface of the bottom 47.

Das äußere Teleskoprohr steht mit seiner unteren Stirnfläche auf dem Boden 47 auf. Der Boden 47 und der Teller 44 können auch ein Stück sein, d.h. ohne den gezeichneten Ringraum zwischen beiden. Das äußere Teleskoprohr 13 hat gemäß Fig. 5 einen achteckigen Umriß, der in den achteckigen Verlauf des Tellerrands 46 paßt. Der Tellerrand 46 ist mit dem unteren Endbereich des äußeren Teleskoprohrs 13 durch eine Aluminiumschweißung verschweißt. Das äußere Teleskoprohr 13 hat die aus Fig. 5 ersichtliche Symmetrie. Es handelt sich hier nicht um ein regelmäßiges Achteck. Vielmehr sind hier längere Wände 52 und vier kürzere Wände 53 vorgesehen. In den Eckbereichen 54 stehen sie unter 135°. Die Darstellung von Fig. 5 ist maßstäblich sowohl hinsichtlich der Längen als auch der Winkel. Um die absoluten Maße ermitteln zu können: In Fig. 5 ist die lichte Höhe der Fig. 102 mm. Man kann sich das Ganze auch entstanden denken aus einem Quadrat bestehend aus den längeren Wänden 52, in das jedoch zur Vermittlung die kürzeren Wände 53 eingesetzt wurden. Die längeren Wände 52 haben auf ihrer Innenseite in der Mitte Längsleisten 56, deren Innenfläche 57 auf einem koaxialen Kreis 58 liegt, der wenig kleiner ist als der Außendurchmesser des inneren Teleskoprohrs 14, so daß man hier vier Führungsbereiche hat. Die Längsleisten 56 sind sehr flach. Auf 1 Uhr 30, 4 Uhr 30, 7 Uhr 30 und 10 Uhr 30 liegen Befestigungsprofile 59, die einstückig mit dem äußeren Teleskoprohr 13 sind, dieses versteifen und zwischen sich Nuten 61 definieren, die randoffen sind. Der Umriß des inneren Bereichs 62 der Nuten 61 entspricht dem Querschnitt des Kopfs einer darin noch verschiebbaren Hammerkopfschraube und der äußere Bereich 63 entspricht in seiner Breite der Breite des Kopfs der Hammerkopfschraube, wenn dieser Kopf senkrecht zur Zeichnungsebene von Fig. 5 steht, so daß man den Kopf einschieben, ihn dann im inneren Bereich 62 um 90° drehen kann, so daß eine formflüssige Verriegelung stattfindet und der Schaft der Hammerkopfschraube sich senkrecht zu den längeren Wänden 52 nach außen durch den äußeren Bereich 63 hindurch erstreckt.The lower end face of the outer telescopic tube stands on the floor 47. The bottom 47 and the plate 44 can also be one piece, i.e. without the drawn annulus between the two. The outer telescopic tube 13 has an octagonal outline according to FIG. 5, which fits into the octagonal course of the plate rim 46. The plate rim 46 is welded to the lower end region of the outer telescopic tube 13 by an aluminum weld. The outer telescopic tube 13 has the symmetry shown in FIG. 5. It is not a regular octagon. Rather, longer walls 52 and four shorter walls 53 are provided here. In the corner areas 54 they are at 135 °. 5 is to scale in terms of both length and angle. In order to be able to determine the absolute dimensions: In FIG. 5 the clear height of FIG. 102 mm. The whole thing can also be imagined as consisting of a square consisting of the longer walls 52, in which, however, the shorter walls 53 were used for communication. The longer walls 52 have on their inner side in the middle longitudinal strips 56, the inner surface 57 of which lies on a coaxial circle 58 which is slightly smaller than the outer diameter of the inner telescopic tube 14, so that there are four guide areas here. The longitudinal strips 56 are very flat. At 1:30 a.m., 4:30 a.m., 7:30 a.m. and 10:30 a.m. there are fastening profiles 59 which are integral with the outer telescopic tube 13, stiffen it and define grooves 61 between them which are open at the edges. The outline of the inner region 62 of the grooves 61 corresponds to the cross section of the head of a hammer head screw which is still displaceable therein and the outer region 63 corresponds in width to the width of the head of the hammer head screw when this head is perpendicular to the plane of the drawing of FIG. 5, so that one insert the head, then turn it in the inner region 62 by 90 °, so that a fluid locking takes place and the shaft of the hammer head screw extends perpendicular to the longer walls 52 outwards through the outer region 63.

Das Befestigungsprofil kann man sich entstanden denken aus einem T-Profil mit einem sehr kurzen, breiten Mittelteil 64, das herauswächst aus den Eckbereichen 54 und zur Gewichtsersparnis sowie zur Bildung von Wandstärken im wesentlichen gleicher Dicke eine Innenausnehmung 66 hat, die ovale Gestalt hat und ferner aus einem Querteil 67, das außen in zwei Flügel 68, 69 übergeht. Die Flügel 68, 69 und Querteile 67 folgen ebenfalls einem Achteck, das allerdings - im Gegensatz zum inneren Achteck - winkelmäßig äquidistante Ecken 71 hat. Zwischen zwei Ecken 71 liegt eine Einsenkung 72, so daß definierte Anlagen von Anbauteilen möglich sind. Die Flügel 68, 69 stehen unter 45° zu der X-Achse 73 bzw. der Y-Achse 74. Ein solches Profil hat ein Trägheitsmoment um die X- und Y-Achse von 175,70 cm4, ein Widerstandsmoment von 33,5 cm3, sowohl um die X- als auch die Y-Achse, eine Querschnittsfläche von 18,1 cm2 und ein mittleres Gewicht von 5,22 kg pro laufender Meter.The fastening profile can be imagined from a T-profile with a very short, wide central part 64, which grows out of the corner areas 54 and for saving weight and for forming wall thicknesses of essentially the same thickness, has an inner recess 66 which has an oval shape and further from a cross member 67 which merges into two wings 68, 69 on the outside. The wings 68, 69 and cross members 67 follow also an octagon, which however - in contrast to the inner octagon - has angularly equidistant corners 71. A depression 72 lies between two corners 71, so that defined systems of attachments are possible. The wings 68, 69 are at 45 ° to the X-axis 73 and the Y-axis 74. Such a profile has an moment of inertia about the X and Y axes of 175.70 cm 4 , a section modulus of 33.5 cm 3 , around both the X and Y axes, a cross-sectional area of 18.1 cm 2 and an average weight of 5.22 kg per linear meter.

Gemäß Fig. 1 sind in die Nuten 61 Anschläge 76 eingeschweißt, und zwar in regelmäßigen Abständen. Diese Anschläge 76 befinden sich in allen vier Nuten 61. Mit ihnen als Anschlag hat man ein Maß dafür, ob z.B. eine anzubauende, horizontal liegen sollende Stange oder dergleichen auch tatsächlich horizontal liegt, denn wenn bei allen Stützen die Anschläge 76 auf gleicher Höhe sind, dann liegen sie - wenn beide Enden an Anschlägen liegen - tatsächlich horizontal. Es ist aber trotzdem möglich, nicht horizontal verlaufen zu lassen, wenn dies gewünscht wird. Die Anschläge 76 geben außerdem dort noch eine zusätzliche Stabilität, wo die Anbauteile angeschraubt werden.1, stops 76 are welded into the grooves, at regular intervals. These stops 76 are located in all four grooves 61. With them as a stop one has a measure of whether e.g. a bar to be attached, which is to be horizontal, or the like is actually horizontal, because if the stops 76 are at the same height in all supports, then they are actually horizontal when both ends are against stops. However, it is still possible not to run horizontally if this is desired. The stops 76 also give additional stability where the attachments are screwed on.

Der Durchmesser des Rohrs 23 ist wesentlich kleiner als die Querabmessung des äußeren Teleskoprohrs 13. Das Rohr 23 ist an den Umfang des inneren Teleskoprohrs 14 angepaßt. Der Innenraum des äußeren Teleskoprohrs 13 ist zwar einiges größer als der Außendurchmesser des inneren Teleskoprohrs 14. Trotzdem entsteht ein guter Kraft- und Formfluß zwischen den beiden Teleskoprohren, da sie aneinander an vielen Stellen positiv geführt werden. Ohne die dem Anbau dienenden Nuten 61 und die Befestigungsprofile 59 könnte das äußere Teleskoprohr 13 auch wesentlicher einfacher gestaltet sein, z.B. quadratisch, sechseckig, rund oder dergleichen. Stöße auf das aus Aluminium bestehende äußere Teleskoprohr 13 machen diesem wenig aus, weil die Mehrzahl der Stöße abgefangen wird, und zwar einmal durch die Flügel 68, 69, die man leicht wieder zurückbiegen kann, aber auch deshalb, weil sich der Bereich außerhalb der Innenausnehmung 66 verbiegen kann, ohne die ganze Deformation nach innen zu weiterzugeben.The diameter of the tube 23 is significantly smaller than the transverse dimension of the outer telescopic tube 13. The tube 23 is adapted to the circumference of the inner telescopic tube 14. The interior of the outer telescopic tube 13 is somewhat larger than the outer diameter of the inner telescopic tube 14. Nevertheless, there is a good flow of force and shape between the two telescopic tubes, since they are positively guided against one another in many places. Without the grooves 61 used for the attachment and the fastening profiles 59, the outer telescopic tube 13 could also be made considerably simpler, for example square, hexagonal, round or the like. Bumps on the aluminum outer telescopic tube 13 make little difference because the majority of the bumps are absorbed by the wings 68, 69, which can be easily bent back, but also because the area is outside the inner recess 66 can bend without passing on the entire deformation inwards.

Die für das äußere Teleskoprohr 13 angegebenen Werte beginnend mit den Trägheitsmomenten und endend mit dem maximalen Gewicht können um plus/minus 50 % variiert werden.The values given for the outer telescopic tube 13 starting with the moments of inertia and ending with the maximum weight can be varied by plus / minus 50%.

Naturgemäß ist ein Gewindegang 28 aus Aluminium empfindlicher als ein Gewindegang aus Stahl. Weniger um den Mutterring 22 zu schonen und auch weniger, um den sonst notwendigen Arbeitsaufwand beim Lösen des Mutterrings 22 zu erniedrigen, wird hier zusätzlich zu einer eventuellen Schmierung des Gewindegangs 28 eine Schnellabsenkvorrichtung 75 verwendet. Hierzu bildet man den in Fig .1 dargestellten Steckbolzen an sich kreiszylindrischen Umfangs so aus, daß zwei nach oben gerichtete Kerben 77, 78 vorgesehen sind. Ihr kürzester Abstand ist kleiner als der Innendurchmesser des inneren Teleskoprohrs. Ihr größter Abstand ist größer als der Außendurchmesser des inneren Teleskoprohrs 14, so daß dessen Wand jeweils in die Kerbe 77 und diametral gegenüber in die Kerbe 78 fallen kann. Die Ränder der Kerben 77, 78 sind leicht angeschrägt, so daß der obere Rand der Leibung eines Querbohrungspaars 18 leicht dort hineinfindet. Der linke Bereich 79 ist größer als der Durchmesser eines Querbohrungspaars 18, so daß der Steckbolzen 19 nicht nach rechts hinausfallen kann. In der gezeichneten Lage ist die Aufstandsplatte 16 hoch, nimmt die Kraft auf, die die Decke ausübt, leitet sie durch die Wand des inneren Teleskoprohrs 14 über den oberen Leibungsbereich 81 der Querbohrungspaare 18 in den Steckbolzen 19 ein. Von dort aus gelangt die Kraft zum oberen Rand 85 des Mutterrings 22 und von dort in den Gewindegang 28 usw. Die Aufstandsplatte 16 ist also in ihrer oberen Lage fixiert. Zum Absenken bewegt man den Steckbolzen 19 gemäß Fig. 7 nach links. Der Leibungsbereich 81 fällt dann in die Kerben 77, 78 und gemäß der Kerbentiefe aber bei weitem ausreichend fällt die Aufstandsplatte 16 um die Strecke 82. Nunmehr kann der Mutterring 22 leicht gedreht werden und die Stütze 11 kann nach genügendem Absenken des Mutterrings 22 leicht weggenommen werden.Naturally, a thread 28 made of aluminum is more sensitive than a thread made of steel. Less in order to protect the nut ring 22 and also less to reduce the work that is otherwise required when loosening the nut ring 22, a quick-lowering device 75 is used here in addition to any lubrication of the thread turn 28. For this purpose, the socket pin shown in FIG. 1 is of a circular cylindrical perimeter in such a way that two notches 77, 78 directed upwards are provided. Their shortest distance is smaller than the inner diameter of the inner telescopic tube. Their greatest distance is larger than the outer diameter of the inner telescopic tube 14, so that its wall can fall into the notch 77 and diametrically opposite in the notch 78. The edges of the notches 77, 78 are slightly chamfered so that the upper edge of the reveal of a pair of transverse bores 18 easily finds its way into it. The left region 79 is larger than the diameter of a pair of transverse bores 18, so that the plug pin 19 cannot fall out to the right. In the position shown, the support plate 16 is high, absorbs the force exerted by the ceiling, passes it through the wall of the inner telescopic tube 14 via the upper reveal area 81 of the cross-bore pairs 18 into the socket pin 19. From there, the force reaches the upper edge 85 of the nut ring 22 and from there into the thread 28, etc. The support plate 16 is thus fixed in its upper position. For lowering, the plug pin 19 is moved to the left according to FIG. 7. The reveal area 81 then falls into the notches 77, 78 and, according to the notch depth, the support plate 16 falls far enough by the distance 82. The nut ring 22 can now be rotated slightly and the support 11 can be easily removed after the nut ring 22 has been lowered sufficiently .

Ein nicht dargestellter Kraftspeicher, z.B. eine Feder, verschiebt den Steckbolzen 19 automatisch nach rechts und holt ihn in seine in Fig. 6 gezeichnete Lage zurück. Man könnte hier auch von einer Rückholfeder reden. Durch diese Rückholung wird verhindert, daß aus Versehen die Stütze 11 so benutzt wird, wie in Fig. 7 gezeichnet. Von dieser Lage aus könnte man ein zweites Mal nicht mehr absenken. Der Unterschied zwischen den beiden Höhenlagen ist sehr gering, und man kann dies beim Arbeiten durchaus übersehen. Zum Beispiel kann die Feder einerseits an der Stufe 83 anschlagen und andererseits an der Außenfläche des äußeren Teleskoprohrs 13. Es sind jedoch eine ganze Anzahl anderer Lösungen auch denkbar. Auf jeden Fall ist es aber notwendig, daß eine Rückholfeder vorgesehen ist.A force accumulator, not shown, for example a spring, automatically moves the plug pin 19 to the right and brings it back into its position shown in FIG. 6. One could also speak of a return spring here. This retrieval prevents the support 11 from being used accidentally as shown in FIG. 7. From from this position you could not lower it a second time. The difference between the two altitudes is very small, and this can be overlooked when working. For example, the spring can strike the step 83 on the one hand and the outer surface of the outer telescopic tube 13 on the other hand. However, a number of other solutions are also conceivable. In any case, it is necessary that a return spring is provided.

Wie weiter oben gesagt, kann die Stütze 11 auch in umgekehrter Lage relativ zur Fig. 1 verwendet werden. Es wird jedoch bei Benutzung die gezeichnete Lage bevorzugt. Man muß sich vorstellen, daß diese Stützen 1 m und länger sein können wie der Mann, der sie trägt. Versucht er nun, die Stütze aufzurichten, so darf er ja die Aufstandsplatte 16 nicht dauernd vor sich herschieben. Vielmehr muß er auch ohne Widerlager in der Lage sein, die Stütze 11 senkrecht zu stellen. Dies gelingt umso eher, je tiefer der Schwerpunkt der Gesamtanordnung ist. Obwohl das innere Teleskoprohr 14 kleiner ist, ist es jedoch schwerer als das äußere Teleskoprohr 13, so daß der gemeinsame Schwerpunkt auf jeden Fall erheblich unterhalb dem oberen Ende des inneren Teleskoprohrs liegt und damit liegt dieser Schwerpunkt genügend tief, so daß die Bedienungsperson die Stütze 11 auch beim Aufrichten leicht und allein handhaben kann. Es nützt nichts, wenn die Vorrichtung an und für sich leicht ist. Man muß sie auch von einer Einzelperson aufrichten lassen können.As stated above, the support 11 can also be used in the reverse position relative to FIG. 1. However, the position shown is preferred for use. One has to imagine that these supports can be 1 m and longer than the man who carries them. If he now tries to raise the support, he must not constantly push the support plate 16 in front of him. Rather, he must be able to position the support 11 vertically even without an abutment. This is all the more successful the lower the focus of the overall arrangement. Although the inner telescopic tube 14 is smaller, it is heavier than the outer telescopic tube 13, so that the common center of gravity is in any case considerably below the upper end of the inner telescopic tube and thus this center of gravity is sufficiently deep that the operator supports 11 can also be handled easily and alone when erecting. There is no use if the device is light in and of itself. It must also be possible for an individual to erect them.

Wie aus der obigen Beschreibung ersichtlich ist, muß die gesamte Kraft durch den oberen Leibungsbereich 81 fließen, der in der Praxis eine sehr kleine Fläche hat, weil ja der Durchmesser des Steckbolzens 19 kleiner ist als der Durchmesser der Querbohrungspaare 18. Es ist also dieser Leibungsbereich 81 wahrscheinlich das schwächste Glied in der Kette. Gemäß Fig. 8 kann man dies beheben, indem man im Bereich der Querbohrung 64 eine Materialansammlung 86 anwalzt, die den tragenden Leibungsbereich je nach Erstreckung der Materialansammlung 86 längs der Mittenachse 87 vergrößert. Bei doppelter Länge ergibt sich die halbe spezifische Flächenpressung. Die Materialansammlung 86 geht bauchförmig nach innen, wo es ohnehin Platz hat und nicht stört.As can be seen from the above description, the entire force must flow through the upper reveal area 81, which in practice has a very small area, because the diameter of the plug pin 19 is smaller than the diameter of the transverse bore pairs 18. It is therefore this reveal area 81 probably the weakest link in the chain. 8, this can be remedied by rolling a material accumulation 86 in the area of the transverse bore 64, which increases the load-bearing reveal area depending on the extent of the material accumulation 86 along the central axis 87. With double the length, half the specific surface pressure is obtained. The material accumulation 86 goes in a bulbous shape, where it has space anyway and does not interfere.

Eine andere Variante ist rechts gezeichnet. Hier wurde mit Schweißnähten 88 ein Stahlblechstreifen 89 aufgeschweißt, und zwar solange noch das Coil-Material, aus dem das innere Teleskoprohr 14 besteht, flach lag und noch nicht hoch zu einem Ring gewalzt worden ist. Die Querbohrung 91 durch beide Materialdicken hindurch bohrt man ebenfalls wie die Querbohrung 84 dann später. Es wäre auch denkbar, die Querbohrung durch eine Einsatzbuchse gegebenenfalls aus höher belastbarem Material zu verstärken.Another variant is drawn on the right. Here, a steel sheet strip 89 was welded on with weld seams 88, and as long as the coil material from which the inner telescopic tube 14, lay flat and has not yet been rolled up into a ring. The cross bore 91 through both material thicknesses is then drilled later, like the cross bore 84. It would also be conceivable to reinforce the transverse bore with an insert bushing, if necessary, from a material that can withstand higher loads.

Das innere Teleskoprohr 14 kann einen Außendurchmesser von 40 - 100 mm haben. Dementsprechend ist dann die restliche Konstruktion anzupassen. Der Gewindegang 28 könnte auch dadurch entstanden sein, daß er geschnitten wurde oder daß er gegossen wurde oder daß er aus Kunststoff hergestellt wurde und auf das Rohr 23 aufgeklebt wurde.The inner telescopic tube 14 can have an outer diameter of 40-100 mm. The rest of the construction must then be adapted accordingly. The thread 28 could also have resulted from the fact that it was cut or that it was cast or that it was made of plastic and was glued to the tube 23.

Bekannte Aluminiumstützen können ihre Ausziehlänge lediglich durch Drehen einer Mutter verändern. Will man z.B. die Höhe von 3 m auf 4,50 m ändern, dann muß diese Höhenverstellung durch Drehen einer Mutter über eine Strecke von 1,50 m bewerkstelligt werden. Dies dauert aber eine außerordentlich lange Zeit, und schon beim Drehen wird das Bedienungspersonal müde. Dagegen erlaubt die Erfindung es, zumindest das eine Rohr aus Aluminium herzustellen und trotzdem die grobe Höheneinstellung schnell zu bewirken und lediglich bei der Feineinstellung der Höhe die Mutter drehen zu müssen.Known aluminum supports can only change their extension length by turning a nut. Do you want e.g. change the height from 3 m to 4.50 m, then this height adjustment must be carried out by turning a nut over a distance of 1.50 m. However, this takes an extraordinarily long time, and the operator becomes tired even when turning. On the other hand, the invention makes it possible to produce at least one tube made of aluminum and nevertheless to effect the rough height adjustment quickly and only to have to turn the nut when fine adjusting the height.

Hat die Stütze die beschriebene Schnellabsenkung oder eine äquivalente Schnellabsenkung, so vermindert man den ggf. extrem hohen Flankenabtrieb an den Gewindeflanken 31. Man kann es sich daher leisten, relativ weiches Material wie Aluminium, Kunststoff oder verstärkten Kunststoff zu verwenden. Die Last die eine Stütze aufnehmen kann, mag bis zu 60 KN reichen. Durch die Schnellabsenkung ist dies aber nur eine statisch aufzunehmende Last und nicht etwa auch zugleich eine Last, die Reibung an der Gewindeflanke 31 verursacht.If the support has the described quick lowering or an equivalent quick lowering, the possibly extremely high flank output on the thread flanks 31 is reduced. One can therefore afford to use relatively soft material such as aluminum, plastic or reinforced plastic. The load that a column can support may reach up to 60 KN. Due to the rapid lowering, however, this is only a load to be absorbed statically and not at the same time a load that causes friction on the thread flank 31.

Auf der tragenden Gewindeflanke 31 darf die Flächenpressung nicht höher als 115 N/mm2 maximal sein. Hieraus ergibt sich zumindest mittelbar der Neigungswinkel der Flanke, die Anzahl der tragenden Gewindegänge, die Anzahl der Innengewinde-Gänge des Mutterrings 22 und bis zu einem gewissen Grade auch die Steigung.The surface pressure on the load-bearing thread flank 31 must not exceed 115 N / mm 2 . This results at least indirectly in the angle of inclination of the flank, the number of load-bearing threads, the number of internal threads of the nut ring 22 and, to a certain extent, the pitch.

Claims (28)

  1. Support for building purposes, e.g. for shuttering and scaffolding,
    having an inner telescopic tube (14),
    having an outer telescopic tube (13),
    having a coarse external thread (28) at the non-free end region of the outer telescopic tube (13), with a nut device (22) on the external thread (28), the external thread (28) being located on a tube portion (23) whose through-passage hole (49) guides the inner telescopic tube (14) with little play, the tube portion (23) being considerably shorter than a relatively long subregion of the outer telescopic tube (13), the [sic] a retaining sleeve (24) is interposed between the subregion (26) and the tube portion (23) and encloses the bottom border region of the tube (23) and the top border of the subregion,
    characterized in that
    a) the support has a load-bearing capacity of more than 30 kN and a height of more than 1 m,
    b) a support plate (16, 27) is provided at the free end region of each telescopic tube (13, 14),
    c) the inner telescopic tube (14) is made of steel,
    d) the outer telescopic tube (13) is made of aluminium,
    e) the subregion (26) of the outer telescopic tube (13) is an extruded subregion,
    f) the extruded subregion (26) has a considerably larger circumference than the inner telescopic tube (14) and the tube portion (23).
  2. Support according to Claim 1, characterized in that the inner telescopic tube (14) is at least essentially cylindrical, and in that the inner wall (52) [sic] of the tube portion (23) complements this.
  3. Support according to Claim 2, characterized in that the inner telescopic tube (14) has radial transverse-hole pairs (17, 18) which are spaced apart axially by at least essentially regular intervals, and in that the length of the external thread (28) is between one interval and four intervals.
  4. Support according to Claim 1, characterized in that the external thread (28) is a rolled external thread.
  5. Support according to Claim 4, characterized in that the external thread (28) is a trapezoidal thread.
  6. Support according to Claim 5, characterized in that at least the load-bearing flank (31) of the external thread (28) is between the horizontal and 20° below the horizontal.
  7. Support according to Claim 1, characterized in that the nut device (22) is made at least essentially of cast steel.
  8. Support according to Claim 7, characterized in that the cast steel is a pressure die casting.
  9. Support according to Claim 3, characterized in that the wall (52) [sic] of the inner telescopic tube (14) is thickened at least in the region of the holes (17, 18) of the hole pairs.
  10. Support according to Claim 9, characterized in that the thickened section (89) is a double layer.
  11. Support according to Claim 9, characterized in that the thickened section (89) is a homogenous accumulation of material which is produced by rolling.
  12. Support according to Claim 9, characterized in that the thickened section (89) is an insert bush.
  13. Support according to Claim 1, characterized in that the retaining sleeve (24) is homogenous.
  14. Support according to Claim 1, characterized in that the retaining sleeve (24) is welded to the bottom border of the tube (23) and to the top border of the extruded subregion (26).
  15. Support according to Claim 14, characterized in that the weld seam (38) is an aluminium/aluminium weld.
  16. Support according to Claim 1, characterized in that the bottom end surface of the tube (23) is seated on an inner transverse base (47) which has a central through-passage hole (37) for the inner telescopic tube (14).
  17. Support according to Claim 16, characterized in that, from the other side of the transverse base (47), the top end surface of the extruded subregion (26) is seated on the outer border region of said transverse base.
  18. Support according to Claim 1, characterized in that the retaining sleeve (24) has a collar border (46) which surrounds the region around the top end surface of the extruded subregion (26).
  19. Support according to Claim 1, characterized in that a collar base (47) which surrounds the tube (23) is provided in the retaining sleeve (24), the collar base (47) being located approximately in the central region of the retaining sleeve (24).
  20. Support according to Claim 1, characterized in that a quick-action lowering means (75) is seated on the retaining sleeve (24).
  21. Support according to Claim 1, characterized in that the quick-action lowering means (75) is self-restoring.
  22. Support according to Claim 21, characterized in that a restoring spring is provided.
  23. Support according to Claim 1, characterized in that, on its inside, the extruded subregion (26) has at least three offset, longitudinally running guide strips (56), of which the inside (57) guides the outside (21) of the inner telescopic tube (14).
  24. Support according to Claim 23, characterized in that the inside (57) is shaped in accordance with an osculating radius (58) with respect to the circumference of the inner telescopic tube (14).
  25. Support according to Claim 1, characterized in that the outer telescopic tube (13) has longitudinally running connection grooves (61).
  26. Support according to Claim 25, characterized in that the clear cross-section of the connection grooves (61) corresponds to the cross-section of hammer-head bolts.
  27. Support according to Claim 25, characterized in that non-displaceable stops for connection parts are provided in the connection grooves (61).
  28. Support according to Claim 1, characterized in that the surface contact pressure of the thread-turn flank (31) is less than 115 N/mm2, preferably 20 N/mm2 ± 100%.
EP94120095A 1994-01-08 1994-12-19 Telescopic strut for building construction Expired - Lifetime EP0665348B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4400360 1994-01-08
DE4400360A DE4400360A1 (en) 1994-01-08 1994-01-08 support

Publications (2)

Publication Number Publication Date
EP0665348A1 EP0665348A1 (en) 1995-08-02
EP0665348B1 true EP0665348B1 (en) 1997-10-29

Family

ID=6507591

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94120095A Expired - Lifetime EP0665348B1 (en) 1994-01-08 1994-12-19 Telescopic strut for building construction

Country Status (3)

Country Link
EP (1) EP0665348B1 (en)
AT (1) ATE159787T1 (en)
DE (2) DE4400360A1 (en)

Cited By (2)

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Publication number Priority date Publication date Assignee Title
DE102007001170B3 (en) * 2007-01-05 2008-07-03 Dingler, Gerhard Connecting element for mounting bracing at inner pipe of telescopic construction support, has outer pipe and inner pipe, where mounting device is provided for mounting at inner pipe of construction support
WO2023287409A1 (en) * 2021-07-14 2023-01-19 Brand Shared Services Llc Support head with quick release for formwork system

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US20070264076A1 (en) * 2006-05-12 2007-11-15 Mccracken Robert Load release pin for concrete shoring apparatus
DE102010044193A1 (en) * 2010-11-19 2012-05-24 Harsco Infrastructure Services Gmbh Head piece for frontal placement on a prop and method
CN105888295B (en) * 2016-04-13 2019-05-10 中国建筑第八工程局有限公司 Construction riding track parallels and its construction method
NL2019510B1 (en) * 2017-09-08 2019-03-19 Reco Holding B V Tubular construction
US11891825B2 (en) * 2018-10-02 2024-02-06 Independence Materials Group, Llc Apparatus for supporting overhead structure
US11987999B2 (en) 2021-07-14 2024-05-21 Brand Shared Services Llc Support head with quick release for formwork system
CN113653312A (en) * 2021-07-20 2021-11-16 晟通科技集团有限公司 Supporting structure and supporting frame

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FR993547A (en) * 1949-06-24 1951-11-02 Aluminium Francais prop
DE1741364U (en) * 1957-01-09 1957-03-14 Erwin Foell FORMWORK SUPPORTS.
DE7830126U1 (en) * 1978-10-10 1979-01-18 Salzgitter Maschinen Und Anlagen Ag, 3320 Salzgitter HYDRAULIC PIT STAMP
AU537327B2 (en) * 1979-05-03 1984-06-21 William Graham Hitchins Telescopic foundation leg
DE2935187A1 (en) * 1979-08-31 1981-04-16 Heinrich Dipl.-Ing. 4030 Ratingen Schliephacke Telescopic bolted upright building support element - has material reinforcement in perforated areas on inner tube sides
DE3445657A1 (en) * 1984-12-14 1986-06-26 Friedr. Ischebeck GmbH, 5828 Ennepetal Structural support
DE3641349C5 (en) * 1986-12-03 2004-02-12 Friedr. Ischebeck Gmbh construction support
DE8802297U1 (en) * 1988-02-23 1988-05-05 Rose, Udo, 4836 Herzebrock Coupling attachment for a pipe support
DE3910344A1 (en) * 1989-03-30 1990-10-04 Peri Werk Schwoerer Kg Artur LENGTH VARIABLE TELESCOPIC SUPPORT
NL9000711A (en) * 1990-03-26 1991-10-16 Petrus Johannes Lambertus De L SCREW STAMP FOR SUPPORTING FORMWORKS IN CONSTRUCTION.
DE4206573A1 (en) * 1992-01-25 1993-07-29 Peri Gmbh HEIGHT-ADJUSTABLE SUPPORT
DE4211136C2 (en) * 1992-04-03 1997-04-17 Gerhard Dingler Device for slab formwork

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007001170B3 (en) * 2007-01-05 2008-07-03 Dingler, Gerhard Connecting element for mounting bracing at inner pipe of telescopic construction support, has outer pipe and inner pipe, where mounting device is provided for mounting at inner pipe of construction support
WO2008080377A1 (en) 2007-01-05 2008-07-10 Gerhard Dingler Connector element for fastening a reinforcement piece to an interior pipe of a telescoping construction support, and telescoping construction support having such a connector element
WO2023287409A1 (en) * 2021-07-14 2023-01-19 Brand Shared Services Llc Support head with quick release for formwork system

Also Published As

Publication number Publication date
DE59404473D1 (en) 1997-12-04
DE4400360A1 (en) 1995-07-13
ATE159787T1 (en) 1997-11-15
EP0665348A1 (en) 1995-08-02

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