EP0242705B1 - Steel tube shore with quick lowering - Google Patents

Steel tube shore with quick lowering Download PDF

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Publication number
EP0242705B1
EP0242705B1 EP87105179A EP87105179A EP0242705B1 EP 0242705 B1 EP0242705 B1 EP 0242705B1 EP 87105179 A EP87105179 A EP 87105179A EP 87105179 A EP87105179 A EP 87105179A EP 0242705 B1 EP0242705 B1 EP 0242705B1
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EP
European Patent Office
Prior art keywords
pin
tube
bolt
engaging surfaces
steel tube
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
EP87105179A
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German (de)
French (fr)
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EP0242705A2 (en
EP0242705A3 (en
Inventor
Klaus Hagemes
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
HUENNEBECK-ROERO GESELLSCHAFT MIT BESCHRAENKTER HA
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Huennebeck-Roro GmbH
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Publication date
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Publication of EP0242705A2 publication Critical patent/EP0242705A2/en
Publication of EP0242705A3 publication Critical patent/EP0242705A3/en
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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
    • E04G11/483—Supporting heads
    • 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
    • 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
    • E04G25/061—Shores or struts; Chocks telescopic with parts held together by positive means by pins
    • E04G25/063—Shores or struts; Chocks telescopic with parts held together by positive means by pins with safety devices to avoid the accidental loss or unlocking of the pin, e.g. chains attaching the pin to the prop
    • 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 steel tube support for slab formwork or the like with the features of the preamble of claim 1.
  • the bushing is rotated by approximately 90 ° so that the bolt can slide down onto the lower contact surfaces and accordingly the head of the steel pipe support from the formwork remains free.
  • the bushing resting on it can be rotated by the necessary twisting of the threaded sleeve, so that the quick lowering takes place before the final assembly and the steel pipe support is installed with the head lowered in the case of careless assembly. In this case, a quick lowering for the expansion is no longer possible.
  • the freely rotatable bushing provided with the cam surface is an additional component which not only causes additional costs, but also increases the weight of the steel tube support.
  • the invention has for its object to simplify the quick lowering and at the same time to create the possibility to equip already assembled tubular steel supports with a simple and inexpensive quick lowering.
  • the bolt can hold a pair, the inserted tube in an upper position
  • the side of the bolt facing the threaded sleeve has diametrically opposite bearing surfaces, that these two bearing surfaces are arranged at a radial distance from the longitudinal axis of the bolt that the bolt parallel to first pair of a second pair, which can hold the inserted tube in a lower position and also has opposite faces of the bolt facing the threaded sleeve, which are arranged at a shorter radial distance from the longitudinal axis of the bolt, which can hold the tube in an upper position
  • the contact surfaces of each individual pair are arranged at a distance from each other and that the distance between the corresponding contact surfaces corresponds to the diameter of the inserted pipe, according to the present invention for the quick lowering is no additional Component needed.
  • the bolt has inclined planes leading into the second contact surfaces, the displacement or axial displacement of the bolt required for rapid lowering is thereby facilitated.
  • a hammer blow on one end of the bolt protruding from the steel tube support it can be easily adjusted from the installation position to the position desired for quick lowering.
  • the bolt has at one end a stop that limits its insertion depth, for example a nose that lies against the outside of the threaded sleeve. This ensures that the position desired for the normal operating position must be set precisely, even though the actual support areas, which are within the steel pipe support, are practically invisible from the outside.
  • a steel tube support 1 of which only the upper area is shown in the drawing, has an outer tube 2 and an inner tube 3 which is inserted into it and can be telescopically extended and retracted, which is provided with a head plate 4 at the outer end.
  • this steel tube support can also be used in the reverse position, so that the plate 4 then rests as a foot on the floor, while a similar plate attached to the outer end of the tube 2, not shown in the drawing, serves as the top plate.
  • a tubular extension 5 with an external thread 6 is fastened thereon, onto which a threaded sleeve 7 is screwed.
  • the extension 5 contains an elongated hole 8 extending in the direction of the longitudinal axis of the steel tube support 1, through which a bolt 9 can be inserted, which is supported on the threaded sleeve 7.
  • the inner tube 3 is provided with a number of holes 10 arranged at an axial distance from one another and penetrating it in the radial direction, through which the bolt 9 can be inserted.
  • one of the holes 10 of the inner tube 3 is brought into the area of the elongated hole 8 and the bolt is then inserted.
  • the threaded sleeve 7 is then rotated on the thread 6 until the plate 4 is at the desired height.
  • the bolt 9 has on one side two depressions 11 and 12 which are provided at a distance from one another which corresponds to the diameter of the inner tube 3 and which have a width which is greater than the wall thickness of the tube 3.
  • the depressions 11 and 12 are arranged eccentrically from the bolt 9 in the illustrated embodiment.
  • an eye 13 is arranged through which a wire ring 14 is inserted, which is guided around the tube 2 in order to captively connect the bolt 9 to the tube support 1 and to prevent the bolt from being reversed, namely with the recesses 11 and 12 facing the threaded sleeve 7, can be inserted.
  • the eye 13 is provided with an extension in the form of a web 15 which extends in the longitudinal direction of the bolt 9 on the outside thereof and forms a stop with which the insertion depth of the bolt 9 is limited.
  • the web 15 lies against the inserted tube 3 when the bolt 9 is inserted into the normal operating position, in which the inner tube 3 is supported on bolt sections 9a and 9b next to the depressions 11 and 12.
  • These bolt sections 9a and 9b can be slightly beveled in the direction of the associated recess 11 and 12, respectively, in order to facilitate the sliding movement between the bolt 9 and the tube 3 lying on it when lowering the inner tube 3.
  • the depressions 11 and 12 need not be particularly deep, so that they hardly weaken the load-bearing cross-section of the bolt, because it is sufficient for the quick lowering to cancel the pressure acting on the plate 4 on the threaded sleeve 7.
  • the threaded sleeve 7 is turned back, which is possible without any special effort as soon as the support pressure acting on it is released.
  • the depressions 11 and 12 are arranged eccentrically.
  • the web 15 forming the stop is provided opposite the recesses 11 and 12 on the outside of the bolt 9, so that when inserting the bolt one only has to take care that the web 15 points upwards to ensure that when the bolt 9 is pushed back the desired reduction is achieved. This is ensured if the web, as shown in FIG. 1, protrudes into the elongated hole 8 of the outer tube 2.

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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)

Description

Die Erfindung betrifft eine Stahlrohrstütze für Deckenschalungen oder dergleichen mit den Merkmalen des Oberbegriffes des Patentanspruches 1.The invention relates to a steel tube support for slab formwork or the like with the features of the preamble of claim 1.

Bei einem bekannten Gerüstständerfuß (DE-U 1 818 220) mit einer auf einer Fußplatte sitzenden Gewindespindel und einer darauf befindlichen Gewindemutter zum Verstellen der Höhelage des Ständers wird z.B. zum Abstützen einer Deckenschalgung die Justierung mittels einer Muffe vorgenommen. Nach dem Betonieren und Abbinden der Decke herrscht jedoch ein relativ hoher Auflagedruck der Schalung auf die zu lösende Stahlrohrstütze, so daß ein Zurückschrauben der Gewindemuffe nur unter großer Kraftanstrengung möglich ist und ein Lösen der Gewindemuffe ohne Hilfsmittel wie z.B. Hebel oder Hammerschläge nicht möglich ist.In a known scaffold stand base (DE-U 1 818 220) with a threaded spindle seated on a base plate and a threaded nut thereon for adjusting the height of the stand, e.g. To support a slab formwork, the adjustment is made using a sleeve. After concreting and setting the ceiling, however, there is a relatively high contact pressure of the formwork on the steel pipe support to be loosened, so that screwing back of the threaded sleeve is only possible with great effort and loosening the threaded sleeve without aids such as e.g. Lever or hammer blows is not possible.

Bei einer anderen Stahlrohrstütze (DE-U 8 421 204) ist es bekannt, zum Zwecke der sogenannten Schnellabsenkung zwischen der Gewindemuffe und dem durch die beiden Rohre gesteckten Bolzen eine frei drehbare Buchse anzuordnen, deren dem Bolzen zugewandte Kante in Form einer Nockenfläche mit in unterschiedlicher Höhenlage befindlichen Auflageflächen ausgebildet ist, auf denen sich der Bolzen mit seinen beiden aus der Stahlrohrstütze herausragenden Enden abstützt. Zum Einschalen und während der Schalzeit liegt der Bolzen auf den höher liegenden Auflageflächen auf. Soll das Kopfende der Stahlrohrstütze zum Zwecke der Schnellabsenkung von der Schalung gelöst werden, um die Gewindemuffe spannungsfrei herabdrehen zu können, wird die Buchse um etwa 90° verdreht, so daß der Bolzen auf die tiefer liegenden Auflageflächen herabrutschen kann und dementsprechend der Kopf der Stahlrohrstütze von der Schalung frei bleibt.In another steel tube support (DE-U 8 421 204) it is known to arrange a freely rotatable bushing for the purpose of the so-called quick lowering between the threaded sleeve and the bolt inserted through the two tubes, the edge of which facing the bolt in the form of a cam surface with in different Support surfaces located at an altitude are formed on which the bolt is supported with its two ends protruding from the steel tube support. The bolt rests on the higher contact surfaces for formwork and during the formwork time. If the head end of the steel pipe support is to be detached from the formwork for the purpose of quick lowering in order to be able to turn down the threaded sleeve without tension, the bushing is rotated by approximately 90 ° so that the bolt can slide down onto the lower contact surfaces and accordingly the head of the steel pipe support from the formwork remains free.

Es hat sich herausgestellt, daß bei der Montage einer derartigen Stahlrohrstütze durch das dabei notwendige Verdrehen der Geindemuffe die auf ihr aufliegende Buchse verdreht werden kann, so daß die Schnellabsenkung schon vor der endgültigen Montage erfolgt und die Stahlrohrstütze bei unachtsamer Montage mit abgesenktem Kopf montiert wird. In diesem Fall ist eine Schnellabsenkung für den Ausbau nicht mehr möglich. Hierzu kommt, daß die mit der Nockenfläche versehene frei drehbare Buchse ein zusätzliches Bauteil ist, welches nicht nur zusätzliche Kosten verursacht, sondern auch das Gewicht der Stahlrohrstütze erhöht. Schließlich hat sich auch noch als nachteilhaft erwiesen, daß die für diese Art der Schnellabsenkung vorgesehene Buchse nicht nachträglich an bereits vorhandenen teleskopartigen Stahlrohrstützen angebracht werden kann, weil nach neueren Vorschriften die beiden Rohre einer Stahlrohrstütze unverlierbar miteinander verbunden sein müssen, d.h. also nicht auseinander gezogen werden können, so daß die Buchse auch nicht mehr nachträglich aufgesteckt werden kann.It has been found that during the assembly of such a steel pipe support, the bushing resting on it can be rotated by the necessary twisting of the threaded sleeve, so that the quick lowering takes place before the final assembly and the steel pipe support is installed with the head lowered in the case of careless assembly. In this case, a quick lowering for the expansion is no longer possible. In addition, the freely rotatable bushing provided with the cam surface is an additional component which not only causes additional costs, but also increases the weight of the steel tube support. Finally, it has also proven to be disadvantageous that the bushing provided for this type of quick lowering cannot be retrofitted to already existing telescopic steel pipe supports because, according to new regulations, the two pipes of a steel pipe support must be captively connected, i.e. can not be pulled apart, so that the socket can no longer be plugged on.

Der Erfindung liegt die Aufgabe zugrunde, die Schnellabsenkung zu vereinfachen und zugleich die Möglichkeit zu schaffen, auch bereits zusammengebaute Stahlrohrstützen mit einer einfachen und preiswerten Schnellabsenkung auszustatten.The invention has for its object to simplify the quick lowering and at the same time to create the possibility to equip already assembled tubular steel supports with a simple and inexpensive quick lowering.

Diese Aufgabe wird bei einer Stahlrohrstütze für Deckenschalungen oder dergleichen der eingangs genannten Gattung mit den Merkmalen des kennzeichnenden Teiles des Patentanspruches 1 gelöst. Weitere vorteilhafte Ausgestaltungen der Erfindung sind Gegenstand der Unteransprüche.This object is achieved in a steel tube support for slab formwork or the like of the type mentioned with the features of the characterizing part of patent claim 1. Further advantageous embodiments of the invention are the subject of the dependent claims.

Dadurch, daß der Bolzen ein Paar, das eingesteckte Rohr in einer oberen Position halten könnende, der der Gewindemuffe zugewandten Seite des Bolzens diametral gegenüberliegende Auflageflächen aufweist, daß diese beiden Auflageflächen in einem radialen Abstand zur Längsachse des Bolzens angeordnet sind, daß der Bolzen parallel zum ersten Paar eines zweiten Paar, das eingesteckte Rohr in einer unteren Position halten könnende, sich ebenfalls der Gewindemuffe zugewandten Seite des Bolzens gegenüberliegende Auflageflächen aufweist, die in einem zu dem das Rohr in einer oberen Position halten könnenden Auflageflächen geringeren radialen Abstand zur Längsachse des Bolzens angeordnet sind, daß die Auflageflächen jedes einzelnen Paares in einem Abstand zueinander angeordnet sind und daß der Abstand zwischen den entsprechenden Auflageflächen dem Durchmesser des eingesteckten Rohres entspricht, wird gemäß der vorliegenden Erfindung für die Schnellabsenkung kein zusätzliches Bauteil benötigt. Vielmehr ist lediglich eine Modifikation des einzusteckenden Bolzens erforderlich, so daß für die Schnellabsenkung kein zusätzliches Bauteil benötigt wird, und bereits fertiggestellte Stahlrohrstützen mit der erfindungsgemäßen Schnellabsenkung problemlos ausgestattet werden können, weil zu diesem Zweck lediglich der sowieso erforderliche Bolzen ausgetauscht werden muß. Hinzu kommt, daß bei der Montage der Stahlrohrstütze eine sichere Positionierung der Rohre gewährleistet ist, so daß nicht die Gefahr besteht, die Stahlrohrstütze in abgesenktem Zustand zu montieren. Weiterhin ist festzustellen, daß die Vertiefungen, d.h. die zweiten Auflageflächen, einfach und preiswert herzustellen sind und auch die Bereitstellung der beiden weiteren Auflageflächen keinen konstruktiven Mehraufwand verursacht, da die Mantelfläche oder Außenfläche des Bolzens diese Auflagefläche bildet.Characterized in that the bolt can hold a pair, the inserted tube in an upper position, the side of the bolt facing the threaded sleeve has diametrically opposite bearing surfaces, that these two bearing surfaces are arranged at a radial distance from the longitudinal axis of the bolt that the bolt parallel to first pair of a second pair, which can hold the inserted tube in a lower position and also has opposite faces of the bolt facing the threaded sleeve, which are arranged at a shorter radial distance from the longitudinal axis of the bolt, which can hold the tube in an upper position are that the contact surfaces of each individual pair are arranged at a distance from each other and that the distance between the corresponding contact surfaces corresponds to the diameter of the inserted pipe, according to the present invention for the quick lowering is no additional Component needed. Rather, only a modification of the bolt to be inserted is required, so that no additional component is required for the quick lowering, and already completed steel pipe supports can be equipped with the quick lowering according to the invention without any problems, because for this purpose only the bolt required anyway has to be replaced. In addition, a secure positioning of the tubes is ensured when the steel tube support is installed, so that there is no risk of installing the steel tube support in the lowered state. It should also be noted that the depressions, i.e. the second contact surfaces are simple and inexpensive to manufacture, and the provision of the two further contact surfaces does not cause any additional construction expense, since the outer surface or outer surface of the bolt forms this contact surface.

Weist der Bolzen in die zweiten Auflageflächen führende, geneigte Ebenen auf, so wird dadurch das für eine Schnellabsenkung erforderliche Versetzen bzw. axiale Verschieben des Bolzens erleichtert. Mit einem Hammerschlag auf das eine aus der Stahlrohrstütze herausragende Ende des Bolzens läßt sich dieser problemlos aus der Montagestellung in die für die Schnellabsenkung gewünschte Position verstellen.If the bolt has inclined planes leading into the second contact surfaces, the displacement or axial displacement of the bolt required for rapid lowering is thereby facilitated. With a hammer blow on one end of the bolt protruding from the steel tube support, it can be easily adjusted from the installation position to the position desired for quick lowering.

Nach einem weiteren Merkmal der Erfindung weist der Bolzen an einem Ende einen, seine Einstecktiefe begrenzenden Anschlag auf, beispielweise eine sich gegen die Außenseite der Gewindemuffe legende Nase. Dadurch ist gewährleistet, daß die für die normale Betriebsstellung gewünschte Position genau einzustellen ist, obwohl die eigentlichen Auflagebereiche, welche sich innerhalb der Stahlrohrstütze befinden, von außen praktisch nicht sichtbar sind.According to a further feature of the invention, the bolt has at one end a stop that limits its insertion depth, for example a nose that lies against the outside of the threaded sleeve. This ensures that the position desired for the normal operating position must be set precisely, even though the actual support areas, which are within the steel pipe support, are practically invisible from the outside.

Ist der Anschlag ein sich in Längsrichtung des Bolzens auf seiner Außenseite erstreckender Steg, der in das Langloch des äußeren Rohres paßt, so wird dadurch erreicht, daß, wenn die Gewindemuffe beim Einstellen der gewünschten Schalposition des Stützenkopfes gedreht wird, der eingesteckte Bolzen sich jedoch nur in axialer Richtung bewegen läßt und sich dadurch beim Verdrehen der Gewindemuffe nicht in unerwünschter Richtung verstellt. Somit ist die Montage der mit der erfindungsgemäßen Schnellabsenkung ausgestatteten Stahlrohrstütze vereinfacht. Hinzu kommt, daß für die Schnellabsenkung keine zusätzlichen Bauteile erforderlich sind, welche Kosten verursachen und das Gewicht der Stahlrohrstütze vergrößern.

  • Figur 1 einen Längsschnitt einer Stahlrohrstütze mit Außengewinde in der Betriebsposition und
  • Figur 2 einen Längsschnitt der Stahlrohrstütze wie in Figur 1, jedoch mit abgesenktem inneren Rohrstück, so daß die Kopfplatte von der Schalung, welche sie ursprünglich abgestützt hat, gelöst ist.
If the stop is a web extending in the longitudinal direction of the bolt on its outside, which fits into the elongated hole of the outer tube, this is achieved in that when the threaded sleeve is rotated when setting the desired switching position of the support head, the inserted bolt, however, only can be moved in the axial direction and is therefore not adjusted in the undesired direction when turning the threaded sleeve. The assembly of the tubular steel support equipped with the quick lowering device according to the invention is thus simplified. In addition, no additional components are required for the quick lowering, which cause costs and increase the weight of the steel tube support.
  • 1 shows a longitudinal section of a tubular steel support with an external thread in the operating position and
  • Figure 2 shows a longitudinal section of the steel tube support as in Figure 1, but with the inner tube section lowered, so that the head plate is detached from the formwork which originally supported it.

Eine Stahlrohrstütze 1, von der in der Zeichnung nur der obere Bereich dargestellt ist, weist ein äu- βeres Rohr 2 und ein in dieses eingestecktes, teleskopartig ein- und ausfahrbares inneres Rohr 3 auf, welches am äußeren Ende mit einer Kopfplatte 4 versehen ist. Diese Stahlrohrstütze kann jedoch auch in umgekehrter Position benutzt werden, so daß die Platte 4 dann als Fuß auf dem Boden aufliegt, während dann eine am äußeren Ende des Rohres 2 angebrachte, in der Zeichnung nicht dargestellte ähnliche Platte,als Kopfplatte dient.A steel tube support 1, of which only the upper area is shown in the drawing, has an outer tube 2 and an inner tube 3 which is inserted into it and can be telescopically extended and retracted, which is provided with a head plate 4 at the outer end. However, this steel tube support can also be used in the reverse position, so that the plate 4 then rests as a foot on the floor, while a similar plate attached to the outer end of the tube 2, not shown in the drawing, serves as the top plate.

Am in der Zeichnung oberen Ende des Rohres 2 ist an diesem eine rohrförmige Verlängerung 5 mit Außengewinde 6 befestigt, auf das eine Gewindemuffe 7 aufgeschraubt ist. Die Verlängerung 5 enthält ein sich in Richtung der Längsachse der Stahlrohrstütze 1 erstreckendes Langloch 8, durch das ein Bolzen 9 gesteckt werden kann, der sich auf der Gewindemuffe 7 abstützt.At the upper end of the tube 2 in the drawing, a tubular extension 5 with an external thread 6 is fastened thereon, onto which a threaded sleeve 7 is screwed. The extension 5 contains an elongated hole 8 extending in the direction of the longitudinal axis of the steel tube support 1, through which a bolt 9 can be inserted, which is supported on the threaded sleeve 7.

Das innere Rohr 3 ist mit einer Anzahl von im axialen Abstand voneinander angeordneten, es in radialer Richtung durchsetzenden Löchern 10 versehen, durch die der Bolzen 9 gesteckt werden kann. Zum Einstecken des Bolzens 9 wird eines der Löcher 10 des inneren Rohres 3 in den Bereich des Langloches 8 gebracht und der Bolzen dann eingesteckt. Daraufhin wird die Gewindemuffe 7 auf dem Gewinde 6 verdreht, bis sich die Platte 4 in der gewünschten Höhenlage befindet.The inner tube 3 is provided with a number of holes 10 arranged at an axial distance from one another and penetrating it in the radial direction, through which the bolt 9 can be inserted. To insert the bolt 9, one of the holes 10 of the inner tube 3 is brought into the area of the elongated hole 8 and the bolt is then inserted. The threaded sleeve 7 is then rotated on the thread 6 until the plate 4 is at the desired height.

Der Bolzen 9 weist auf einer Seite zwei Vertiefungen 11 und 12 auf, die in einem dem Durchmesser des inneren Rohres 3 entsprechenden Abstand voneinander vorgesehen sind und eine Breite aufweisen, die größer als die Wandstärke des Rohres 3 ist. Die Vertiefungen 11 und 12 sind beim dargestellten Ausführungsbeispiel exzentrisch vom Bolzen 9 angeordnet.The bolt 9 has on one side two depressions 11 and 12 which are provided at a distance from one another which corresponds to the diameter of the inner tube 3 and which have a width which is greater than the wall thickness of the tube 3. The depressions 11 and 12 are arranged eccentrically from the bolt 9 in the illustrated embodiment.

Am hinteren Ende des Bolzens 9 ist ein Auge 13 argeordnet, durch das ein Drahtring 14 gesteckt ist, der um das Rohr 2 herumgeführt ist, um den Bolzen 9 unverlierbar mit der Rohrstütze 1 zu verbinden und zu verhindern, daß der Bolzen verkehrt herum, nämlich mit den Vertiefungen 11 und 12 zur Gewindemuffe 7 weisend, eingesteckt werden kann.At the rear end of the bolt 9, an eye 13 is arranged through which a wire ring 14 is inserted, which is guided around the tube 2 in order to captively connect the bolt 9 to the tube support 1 and to prevent the bolt from being reversed, namely with the recesses 11 and 12 facing the threaded sleeve 7, can be inserted.

Das Auge 13 ist mit einer Verlängerung in Form eines Steges 15 versehen, der sich in Längsrichtung des Bolzens 9 auf der Außenseite desselben erstreckt und einen Anschlag bildet, mit dem die Einstecktiefe des Bolzens 9 begrenzt wird.The eye 13 is provided with an extension in the form of a web 15 which extends in the longitudinal direction of the bolt 9 on the outside thereof and forms a stop with which the insertion depth of the bolt 9 is limited.

Wie Figur 1 zeigt, liegt der Steg 15 am eingesteckten Rohr 3 an, wenn der Bolzen 9 in die normale Betriebsposition eingesteckt ist, bei der sich das innere Rohr 3 auf Bolzenabschnitten 9a und 9b neben den Vertiefungen 11 und 12 abstützt. Diese Bolzenabschnitte 9a und 9b können in Richtung zu der zugeordneten Vertiefung 11 bzw. 12 leicht abgeschrägt sein, um die beim Absenken des inneren Rohres 3 erforderliche Gleitbewegung zwischen Bolzen 9 und dem aufliegenden Rohr 3 zu erleichtern.As FIG. 1 shows, the web 15 lies against the inserted tube 3 when the bolt 9 is inserted into the normal operating position, in which the inner tube 3 is supported on bolt sections 9a and 9b next to the depressions 11 and 12. These bolt sections 9a and 9b can be slightly beveled in the direction of the associated recess 11 and 12, respectively, in order to facilitate the sliding movement between the bolt 9 and the tube 3 lying on it when lowering the inner tube 3.

Um die Stahlrohrstütze 1 aus der in Figur 1 dargestellten Position, bei der die Platte 4 an der Unterseite einer Schalung 16 oder eines sonstigen abzustützenden Teiles anliegt, in die in Figur 2 dargestellte Position zu bringen, bei der das innere Rohr 3 abgesenkt ist und sich die Platte 4 dementsprechend im Abstand von der Schalung oder dergleichen befindet, wird der Bolzen 9 so weit nach links verschoben, daß das innere Rohr 3 in den Bereich der Ausnehmungen 11 und 12 gelangt. Hierzu wird beispielsweise auf das in der Zeichnung rechts dargestellte Ende 12a des Bolzens 9 mit einem Hammer geschlagen. Besonders wenn die Bolzenabschnitte 9a und 9b leicht abgeschrägt sind, genügt ein einziger Hammerschlag, um den Bolzen aus der Position gemäß Figur 1 in die Position gemäß Figur 2 zu verschieben. Somit ist eine einfache Schnellabsenkung und ein schneller Ausbau der Stahlrohrstütze 1 gewährleistet.In order to bring the steel tube support 1 from the position shown in Figure 1, in which the plate 4 rests against the underside of a formwork 16 or other part to be supported, in the position shown in Figure 2, in which the inner tube 3 is lowered and down the plate 4 is accordingly at a distance from the formwork or the like, the bolt 9 is moved so far to the left that the inner tube 3 reaches the area of the recesses 11 and 12. For this purpose, for example, the end 12a of the bolt 9 shown on the right in the drawing is struck with a hammer. Particularly when the bolt sections 9a and 9b are slightly beveled, a single hammer blow is sufficient to move the bolt from the position shown in FIG. 1 to the position shown in FIG. 2. A simple quick lowering and a quick removal of the steel tube support 1 is thus ensured.

Die Vertiefungen 11 und 12 brauchen dabei nicht sonderlich tief zu sein, so daß sie den tragenden Querschnitt des Bolzens kaum schwächen, weil es für die Schnellabsenkung ausreicht, den über die Platte 4 auf die Gewindemuffe 7 wirkenden Druck aufzuheben. Zum Ausbauen der Stahlrohrstütze 1 wird die Gewindemuffe 7 zurückgedreht, was ohne besonderen Kraftaufwand möglich ist, sobald der auf sie wirkende Stützdruck aufgehoben ist.The depressions 11 and 12 need not be particularly deep, so that they hardly weaken the load-bearing cross-section of the bolt, because it is sufficient for the quick lowering to cancel the pressure acting on the plate 4 on the threaded sleeve 7. To remove the steel tube support 1, the threaded sleeve 7 is turned back, which is possible without any special effort as soon as the support pressure acting on it is released.

Bei der dargestellten Ausführungsform sind die Vertiefungen 11 und 12 exzentrisch angeordnet. Der den Anschlag bildende Steg 15 ist den Vertiefungen 11 und 12 gegenüberliegend auf der Außenseite des Bolzens 9 vorgesehen, so daß man beim Einstecken des Bolzens lediglich darauf achten muß, daß der Steg 15 nach oben weist, um sicherzustellen, daß beim Zurückschlagen des Bolzens 9 die gewünschte Absenkung erreicht wird. Dies ist gewährleistet, wenn der Steg, wie in Figur 1 gezeigt, in das Langloch 8 des äußeren Rohres 2 ragt.In the illustrated embodiment, the depressions 11 and 12 are arranged eccentrically. The web 15 forming the stop is provided opposite the recesses 11 and 12 on the outside of the bolt 9, so that when inserting the bolt one only has to take care that the web 15 points upwards to ensure that when the bolt 9 is pushed back the desired reduction is achieved. This is ensured if the web, as shown in FIG. 1, protrudes into the elongated hole 8 of the outer tube 2.

Da die Vertiefungen 11 und 12 den tragenden Querschnitt des Bolzens 9 nicht wesentlich schwächen, kann man auch bereits vorhandene Stahlrohrstützen mit derartigen Bolzen ausstatten, weil deren Gesamtdurchmesser gegenüber bisher verwendeten Bolzen nicht vergrößert zu werden braucht und der Bolzen 9 dementsprechend auch in die Löcher des inneren Rohres 3 und das Langloch des äußeren Rohres 2 bereits vorhandener Stahlrohrstützen paßt.Since the depressions 11 and 12 do not significantly weaken the load-bearing cross-section of the bolt 9, it is also possible to equip already existing steel pipe supports with such bolts, because their overall diameter need not be increased compared to bolts previously used and the bolt 9 accordingly also fits into the holes of the inner tube 3 and the elongated hole of the outer tube 2 of existing steel tube supports.

Claims (5)

1. A steel tube shore for ceiling framework or the like, comprising two mutually telescoping tubes (2, 3), the outer one having a thread (6) on its interengaging end and comprising an elongated hole (8) in the thread region, said hole extending in longitudinal direction of the shore (1) and traversing it radially, through which and through a hole (10) provided In the inserted tube (3) a pin (9) Is to be passed which can abut against a threaded sleeve (7) screwed onto the thread (6) of the outer tube (2), characterized in that said pin (9) comprises a pair of engaging surfaces (9a, 9b) arranged diametrically with respect to that side of the pin (9) which is directed towards said threaded sleeve (7), said surfaces being capable to maintain said inserted tube (3) in an upper position, that said two engaging surfaces (9a, 9b) are arranged in radical spacing from the longitudinal axis of the pin (9), that said pin (9) comprises a second pair of engaging surfaces (11, 12), arranged in parallel to said first pair and also diametrically with respect to that side of the pin (9) which is directed towards said threaded sleeve (7), said surfaces being capable to maintain said inserted tube (3) in a lower position and being arranged in a smaller radical spacing from the longitudinal axis of the pin than those engaging surfaces (9a, 9b) which are capable to maintain said tube (3) in a upper position, that the engaging surfaces (9a, 9b; 11, 12) of each pair are spaced apart from one another and that the spacing between the respective engaging surfaces (9a, 9b; 11, 12) corresponds to the diameter of the inserted tube (3).
2. A steel tube shore as claimed in claim 1, characterized in that said pin (9) comprises two inclined planes leading to said second engaging surfaces (11,12).
3. A steel tube shore as claimed in claim 1 or claim 2, characterized in that said pin (9) comprises on one end a stop (15) limiting its depth of penetration.
4. A steel tube shore as claimed in one of claims 1 to 4, characterized in that said stop is a web extending in longitudinal direction of said pin (9) on its outside and fitting into the elongated hole (8) of said outer tube (2).
5. A steel tube shore as claimed in claim 4, characterized in that said web (15) is provides on the same side of said pin (9) as said second engaging surfaces (11, 12).
EP87105179A 1986-04-18 1987-04-08 Steel tube shore with quick lowering Expired - Lifetime EP0242705B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3613075 1986-04-18
DE3613075A DE3613075C1 (en) 1986-04-18 1986-04-18 Steel tube support with quick lowering

Publications (3)

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EP0242705A2 EP0242705A2 (en) 1987-10-28
EP0242705A3 EP0242705A3 (en) 1988-08-03
EP0242705B1 true EP0242705B1 (en) 1990-11-07

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EP87105179A Expired - Lifetime EP0242705B1 (en) 1986-04-18 1987-04-08 Steel tube shore with quick lowering

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US (1) US4752057A (en)
EP (1) EP0242705B1 (en)
JP (1) JPH0668218B2 (en)
DE (2) DE3613075C1 (en)
ES (1) ES2018494B3 (en)

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BE1005249A3 (en) * 1991-01-28 1993-06-08 Cometal Nv Shore
EP0957217A1 (en) 1998-05-11 1999-11-17 Thyssen Hünnebeck GmbH Steelprop for floorshutterings or similar with quick-release
US7717943B2 (en) 2005-07-29 2010-05-18 X-Spine Systems, Inc. Capless multiaxial screw and spinal fixation assembly and method

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1005249A3 (en) * 1991-01-28 1993-06-08 Cometal Nv Shore
EP0957217A1 (en) 1998-05-11 1999-11-17 Thyssen Hünnebeck GmbH Steelprop for floorshutterings or similar with quick-release
US7717943B2 (en) 2005-07-29 2010-05-18 X-Spine Systems, Inc. Capless multiaxial screw and spinal fixation assembly and method

Also Published As

Publication number Publication date
US4752057A (en) 1988-06-21
EP0242705A2 (en) 1987-10-28
ES2018494B3 (en) 1991-04-16
EP0242705A3 (en) 1988-08-03
JPH0668218B2 (en) 1994-08-31
DE3613075C1 (en) 1987-07-02
DE3765984D1 (en) 1990-12-13
JPS62296065A (en) 1987-12-23

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