EP0589419A1 - Shoring device - Google Patents

Shoring device Download PDF

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Publication number
EP0589419A1
EP0589419A1 EP93115200A EP93115200A EP0589419A1 EP 0589419 A1 EP0589419 A1 EP 0589419A1 EP 93115200 A EP93115200 A EP 93115200A EP 93115200 A EP93115200 A EP 93115200A EP 0589419 A1 EP0589419 A1 EP 0589419A1
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EP
European Patent Office
Prior art keywords
abutment
shoring
plates
leaf
posts
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Application number
EP93115200A
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German (de)
French (fr)
Inventor
Hans Pelzer
Wilhelm Hess
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Emunds and Staudinger GmbH
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Emunds and Staudinger GmbH
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Publication date
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Publication of EP0589419A1 publication Critical patent/EP0589419A1/en
Withdrawn legal-status Critical Current

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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D17/00—Excavations; Bordering of excavations; Making embankments
    • E02D17/06—Foundation trenches ditches or narrow shafts
    • E02D17/08—Bordering or stiffening the sides of ditches trenches or narrow shafts for foundations
    • E02D17/083—Shoring struts

Definitions

  • the invention relates to a shoring device for supporting trench walls with two large-area shoring plates, which are held apart by a supporting frame arranged in the middle of the shoring plates or two support frames arranged at the ends of the shoring plates and connected to form a unit, a supporting frame consisting of two vertical, cross-sectionally U-shaped abutment posts and two length-adjustable spreaders connected to the abutment posts pivotably about horizontal axes, and the spreaders by means of leaf springs attached to the abutment posts, the resilient ends of which press against the spreaders from above and below, at right angles to the abutment posts and sheeting plates are held.
  • a shoring device of this type is known from DE 22 57 881 C3.
  • the ends of the struts are mounted in open bearing shells which are fastened to the inside of the side walls of the abutment posts.
  • the two lateral surfaces of the stub axles, each pointing towards the longitudinal axis of the trench, are encompassed by curved ends of at least two leaf springs arranged in mirror image to one another, each of which wraps around a horizontal retaining bolt inserted above and below the stub axle in the side walls.
  • the inward-facing, resilient legs of the leaf springs which press against the ends of the struts from above and from below, are pretensioned by means of horizontal tensioning bolts, which are inserted inwards against the retaining bolts, ie away from the shoring panels, into the abutment posts.
  • the invention has for its object to improve a shoring device of the type mentioned so that it is lighter in weight and less expensive to manufacture with the same resilience and that the stock-holding and replacement of the springs is significantly simplified.
  • Each leaf spring can consist of a spring steel part or a package of spring steel parts. If a progressive spring characteristic is desired, the spring leaves of a package can be stepped. It will be useful for a spring assembly to be composed of only two or at most three spring leaves.
  • the shoring device which is partially shown in FIGS. 1 and 2, consists of two shoring plates 1 and 2, which are kept at a distance from a support frame and are connected to form a unit.
  • the support frame is composed of two vertical abutment posts 3 and 4 with a U-shaped cross section and two length-adjustable spreaders 5 connected to the abutment posts 3, 4 and pivotable about vertical axes 6 and 7.
  • the spreaders 5 are held at right angles to the abutment posts 3 and 4 by means of leaf springs 15 and 16 fastened to the abutment posts 3 and 4.
  • the free ends of the leaf springs 15 and 16 lie with prestress on support webs 21 which are attached to the ends of the struts 5 and to the bearing bushes 12 of the struts 5.
  • Above and below the horizontal axes 6 and 7 are arranged in the abutment posts 3 and 4 parallel to the axes 6 and 7 abutment plates 17, on each of which a substantially flat leaf spring 15, 16 is attached easily replaceable.
  • the leaf springs 15 and 16 have a through hole 20 which at System of the leaf springs 15 and 16 on the base wall of the abutment posts 3 and 4 is aligned with a threaded bore which is arranged in the abutment plate 17.
  • a screw 19 and a clamping plate 18 By means of a screw 19 and a clamping plate 18, the leaf springs 15 and 16 can be fastened on the abutment plates 17 in such a way that they rest on the support webs 21 of the bearing bushes 12 with a certain preload.
  • the abutment plates 17 are essentially rectangular and are welded to the side walls of the U-shaped abutment posts 3 and 4.
  • the clamping plates 18 can be loose, but they can also be welded to the base wall of the abutment posts 3 and 4 with their edge facing the base wall of the abutment posts 3 and 4.
  • the gap between the abutment plate 17 and the clamping plate 18 is dimensioned so that the leaf springs 15 and 16 can be easily inserted into the gap thus formed.
  • the leaf springs 15 and 16 can each consist of only one steel spring leaf, but they can also be formed by a package of steel spring leaves. 1 and 2, the leaf spring 16 'is formed by two spring leaves, the outer spring leaf resting on the inner spring leaf being shorter than the inner spring leaf.
  • the spreader 5 shown in FIGS. 1 and 2 is composed of a spindle 9, a spindle nut 10, a spacer tube 11 and the two bearing bushes 12. Furthermore, there is an intermediate bushing 13 between the spindle tube 9 and the bearing bush 12.
  • shoring panels 1 and 2 When dismantling a shoring device, shoring panels 1 and 2 are raised alternately.
  • the spreaders 5 pivot relative to the abutment posts 3 and 4 against the force of the springs 15 and 16 by about 5 to 8 °.
  • FIG. 2 when the left shoring plate 1 is raised compared to the right shoring plate 2, the lower leaf spring 16 of the left abutment post 3 and the upper leaf spring 15 of the right abutment post 4 are loaded, while the other two leaf springs 15 and 16 'are relieved.
  • parts 23 are provided on the bearing bushes 12 'parallel to the support webs 21 and form a through opening 22 for the leaf springs 15 and 16 between them and the support web 21.

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Springs (AREA)
  • Building Environments (AREA)

Abstract

The known shoring devices consist of two shoring plates (1, 2) of large area which are held at a distance apart by a supporting frame arranged in the centre or two supporting frames (3, 4) arranged at the ends of the shoring plates (1, 2) and are connected to form a unit. A supporting frame consists of two vertical abutment posts and stays (5) which are variable in length and are held at right angles to the abutment posts and shoring plates (1, 2) by means of leaf springs (15, 16, 16'), the ends of which press with pretension against the stays (5) from above and below. The novel shoring device, for the same loading capacity, is to be lighter and less expensive to manufacture and is to permit simpler stockkeeping as well as simpler exchange of the springs (15, 16, 16'). To this end, plane abutment plates (17) are arranged in the abutment posts above and below the horizontal axes and parallel to these axes, on which abutment plates (17) at least one plane leaf spring (15, 16, 16') each is fastened in an easily interchangeable manner. <IMAGE>

Description

Die Erfindung bezieht sich auf eine Verbauvorrichtung zum Abstützen von Grabenwänden mit zwei großflächigen Verbauplatten, die von einem in der Mitte der Verbauplatten angeordneten Stutzrahmen oder zwei an den Enden der Verbauplatten angeordneten Stützrahmen auf Abstand gehalten und zu einer Einheit verbunden sind, wobei ein Stützrahmen aus zwei vertikalen, im Querschnitt U-förmigen Widerlagerpfosten und zwei um horizontale Achsen schwenkbar mit den Widerlagerpfosten verbundenen, längenveränderbaren Spreizen besteht und die Spreizen mittels an den Widerlagerpfosten befestigten Blattfedern, deren federnden Enden von oben und unten mit Vorspannung gegen die Spreizen drücken, rechtwinklig zu den Widerlagerpfosten und Verbauplatten gehalten sind.The invention relates to a shoring device for supporting trench walls with two large-area shoring plates, which are held apart by a supporting frame arranged in the middle of the shoring plates or two support frames arranged at the ends of the shoring plates and connected to form a unit, a supporting frame consisting of two vertical, cross-sectionally U-shaped abutment posts and two length-adjustable spreaders connected to the abutment posts pivotably about horizontal axes, and the spreaders by means of leaf springs attached to the abutment posts, the resilient ends of which press against the spreaders from above and below, at right angles to the abutment posts and sheeting plates are held.

Eine Verbauvorrichtung dieser Art ist bekannt aus der DE 22 57 881 C3 Bei diesen bekannten Verbauvorrichtungen sind die Enden der Spreizen in offenen Lagerschalen gelagert, welche an den Innenseiten der Seitenwände der Widerlagerpfosten befestigt sind. Die beiden jeweils zur Grabenlängsachse weisenden Mantelflächen der Achsstummel sind von gebogenen Enden mindestens zweier spiegelbildlich zueinander angeordneter Blattfedern umgriffen, die je einen oberhalb und unterhalb der Achsstummel in die Seitenwände eingesetzten horizontalen Haltebolzen umschlingen. Die jeweils nach innen weisenden federnden und von oben und von unten gegen die Enden der Spreizen drückenden Schenkel der Blattfedern sind mittels horizontaler Spannbolzen vorgespannt, die gegenüber den Haltebolzen nach innen, d.h. von den Verbauplatten weg, in die Widerlagerpfosten eingesetzt sind.A shoring device of this type is known from DE 22 57 881 C3. In these known shoring devices, the ends of the struts are mounted in open bearing shells which are fastened to the inside of the side walls of the abutment posts. The two lateral surfaces of the stub axles, each pointing towards the longitudinal axis of the trench, are encompassed by curved ends of at least two leaf springs arranged in mirror image to one another, each of which wraps around a horizontal retaining bolt inserted above and below the stub axle in the side walls. The inward-facing, resilient legs of the leaf springs, which press against the ends of the struts from above and from below, are pretensioned by means of horizontal tensioning bolts, which are inserted inwards against the retaining bolts, ie away from the shoring panels, into the abutment posts.

Bei der bekannten Verbauvorrichtung ist es zwar einfach, die in offenen Lagerschalen gelagerten Spreizen auszuwechseln, relativ schwierig ist aber das Auswechseln der Blattfedern. Durch ihre gebogene Form sind diese Blattfedern relativ teuer und materialaufwendig.In the known shoring device, it is easy to replace the spreaders stored in open bearing shells, but the replacement of the leaf springs is relatively difficult. Due to their curved shape, these leaf springs are relatively expensive and expensive.

Der Erfindung liegt die Aufgabe zugrunde, eine Verbauvorrichtung der eingangs genannten Art so zu verbessern, daß sie bei gleicher Belastbarkeit im Gewicht leichter und in der Herstellung weniger aufwendig ist und daß das Auf-Lager-Halten und Auswechseln der Federn wesentlich vereinfacht ist.The invention has for its object to improve a shoring device of the type mentioned so that it is lighter in weight and less expensive to manufacture with the same resilience and that the stock-holding and replacement of the springs is significantly simplified.

Diese Aufgabe wird nach der Erfindung dadurch gelöst, daß oberhalb und unterhalb der horizontalen Achsen parallel zu diesen Achsen in den Widerlagerpfosten ebene Widerlagerplatten angeordnet sind, auf welchen je mindestens eine im wesentlichen ebene Blattfeder leicht auswechselbar befestigt ist.This object is achieved according to the invention in that flat abutment plates are arranged above and below the horizontal axes parallel to these axes in the abutment posts, on each of which at least one essentially flat leaf spring is easily exchangeably fastened.

Jede Blattfeder kann aus einem Federstahlteil oder einem Paket von Federstahlteilen bestehen. Falls eine progressive Federkennlinie erwünscht ist, können die Federblätter eines Paketes gestuft sein. Es wird zweckmäßig sein, daß ein Federpaket nur aus zwei oder höchstens drei Federblättern zusammengesetzt ist.Each leaf spring can consist of a spring steel part or a package of spring steel parts. If a progressive spring characteristic is desired, the spring leaves of a package can be stepped. It will be useful for a spring assembly to be composed of only two or at most three spring leaves.

Weitere Merkmale der Erfindung ergeben sich aus den Patentansprüchen 2 bis 9.Further features of the invention emerge from patent claims 2 to 9.

In der folgenden Beschreibung werden Ausführungsbeispiele der Erfindung unter Bezugnahme auf die Zeichnung näher erläutert. Die Zeichnungen zeigen in

Fig. 1
eine vertikale Schnittansicht eines Teiles der Verbauvorrichtung gemäß der Erfindung,
Fig. 2
eine Ansicht gemäß Fig. 1 mit in der Höhe versetzten Verbauplatten und Widerlagerpfosten,
Fig. 3
eine Draufsicht auf einen Widerlagerpfosten mit darin gelagerter Spreize,
Fig. 4
eine vertikale Schnittansicht eines Spreizenlagers mit zweiseitig belastbaren Blattfedern.
In the following description, exemplary embodiments of the invention are explained in more detail with reference to the drawing. The drawings show in
Fig. 1
a vertical sectional view of a part of the shoring device according to the invention,
Fig. 2
1 with vertically offset sheeting panels and abutment posts,
Fig. 3
a plan view of an abutment post with struts stored therein,
Fig. 4
a vertical sectional view of a strut bearing with bilaterally resilient leaf springs.

Die Verbauvorrichtung, die in Fig. 1 und 2 teilweise gezeigt ist, besteht aus zwei Verbauplatten 1 und 2, die von einem Stützrahmen auf Abstand gehalten und zu einer Einheit verbunden sind. Der Stützrahmen setzt sich zusammen aus zwei vertikalen, im Querschnitt U-förmigen Widerlagerpfosten 3 und 4 und zwei um vertikale Achsen 6 und 7 schwenkbar mit den Widerlagerpfosten 3,4 verbundenen längenveränderbaren Spreizen 5.The shoring device, which is partially shown in FIGS. 1 and 2, consists of two shoring plates 1 and 2, which are kept at a distance from a support frame and are connected to form a unit. The support frame is composed of two vertical abutment posts 3 and 4 with a U-shaped cross section and two length-adjustable spreaders 5 connected to the abutment posts 3, 4 and pivotable about vertical axes 6 and 7.

Werden die beiden im wesentlichen parallelen Verbauplatten 1 und 2 in ihrer Mitte abgestützt, dann ist nur ein Stützrahmen für die Verbauvorrichtung notwendig. Werden aber die Verbauplatten 1 und 2 an ihren Enden abgestützt, dann sind zwei Stutzrahmen erforderlich.If the two substantially parallel shoring plates 1 and 2 are supported in the middle, then only one support frame is required for the shoring device. But if the shoring panels 1 and 2 are supported at their ends, then two support frames are required.

Damit die beiden Verbauplatten 1 und 2 zusammen mit einem oder zwei Stützrahmen eine standsichere Einheit bilden, sind die Spreizen 5 mittels an den Widerlagerpfosten 3 und 4 befestigten Blattfedern 15 und 16 rechtwinklig zu den Widerlagerpfosten 3 und 4 gehalten. Die freien Enden der Blattfedern 15 und 16 liegen mit Vorspannung auf Auflagestegen 21 auf, die an den Enden der Spreize 5 bzw. an den Lagerbuchsen 12 der Spreize 5 angebracht sind. Oberhalb und unterhalb der horizontalen Achsen 6 und 7 sind in den Widerlagerpfosten 3 und 4 parallel zu den Achsen 6 und 7 Widerlagerplatten 17 angeordnet, auf welchen je eine im wesentlichen ebene Blattfeder 15, 16 leicht auswechselbar befestigt ist. Die Blattfedern 15 und 16 weisen ein Durchgangsloch 20 auf, das bei Anlage der Blattfedern 15 und 16 an der Basiswand der Widerlagerpfosten 3 und 4 mit einer Gewindebohrung fluchtet, die in der Widerlagerplatte 17 angeordnet ist. Mittels einer Schraube 19 und einer Klemmplatte 18 können die Blattfedern 15 und 16 auf den Widerlagerplatten 17 so befestigt werden, daß sie mit gewisser Vorspannung auf den Auflagestegen 21 der Lagerbuchsen 12 aufliegen.So that the two shoring panels 1 and 2 together with one or two support frames form a stable unit, the spreaders 5 are held at right angles to the abutment posts 3 and 4 by means of leaf springs 15 and 16 fastened to the abutment posts 3 and 4. The free ends of the leaf springs 15 and 16 lie with prestress on support webs 21 which are attached to the ends of the struts 5 and to the bearing bushes 12 of the struts 5. Above and below the horizontal axes 6 and 7 are arranged in the abutment posts 3 and 4 parallel to the axes 6 and 7 abutment plates 17, on each of which a substantially flat leaf spring 15, 16 is attached easily replaceable. The leaf springs 15 and 16 have a through hole 20 which at System of the leaf springs 15 and 16 on the base wall of the abutment posts 3 and 4 is aligned with a threaded bore which is arranged in the abutment plate 17. By means of a screw 19 and a clamping plate 18, the leaf springs 15 and 16 can be fastened on the abutment plates 17 in such a way that they rest on the support webs 21 of the bearing bushes 12 with a certain preload.

Wie die Fig. 3 zeigt, sind die Widerlagerplatten 17 im wesentlichen rechteckig und sind an den Seitenwänden der U-förmigen Widerlagerpfosten 3 und 4 festgeschweißt. Die Klemmplatten 18 können lose sein, sie können aber auch mit ihrer der Basiswand der Widerlagerpfosten 3 und 4 zugewandten Kante an der Basiswand der Widerlagerpfosten 3 und 4 festgeschweißt sein. Der Spalt zwischen der Widerlagerplatte 17 und der Klemmplatte 18 ist so bemessen, daß sich die Blattfedern 15 und 16 bequem in den so gebildeten Spalt einschieben lassen. Durch Anziehen der Schraube 19 und elastischer Verformung der Klemmplatten 18 werden die Blattfedern 15 und 16 in den Spalt eingeklemmt.As shown in FIG. 3, the abutment plates 17 are essentially rectangular and are welded to the side walls of the U-shaped abutment posts 3 and 4. The clamping plates 18 can be loose, but they can also be welded to the base wall of the abutment posts 3 and 4 with their edge facing the base wall of the abutment posts 3 and 4. The gap between the abutment plate 17 and the clamping plate 18 is dimensioned so that the leaf springs 15 and 16 can be easily inserted into the gap thus formed. By tightening the screw 19 and resiliently deforming the clamping plates 18, the leaf springs 15 and 16 are clamped in the gap.

Die Blattfedern 15 und 16 können aus jeweils nur einem Stahlfederblatt bestehen, sie können aber auch von einem Paket Stahlfederblätter gebildet sein. In Fig. 1 und 2 ist die Blattfeder 16' von zwei Federblättern gebildet, wobei das äußere, auf dem inneren Federblatt aufliegende Federblatt kürzer ist als das innere Federblatt.The leaf springs 15 and 16 can each consist of only one steel spring leaf, but they can also be formed by a package of steel spring leaves. 1 and 2, the leaf spring 16 'is formed by two spring leaves, the outer spring leaf resting on the inner spring leaf being shorter than the inner spring leaf.

Die in den Fig. 1 und 2 dargestellte Spreize 5 setzt sich zusammen aus einer Spindel 9, einer Spindelmutter 10, einem Distanzrohr 11 und den beiden Lagerbuchsen 12. Ferner befindet sich zwischen dem Spindelrohr 9 und der Lagerbuchse 12 noch eine Zwischenbuchse 13.The spreader 5 shown in FIGS. 1 and 2 is composed of a spindle 9, a spindle nut 10, a spacer tube 11 and the two bearing bushes 12. Furthermore, there is an intermediate bushing 13 between the spindle tube 9 and the bearing bush 12.

Bei Rückbau einer Verbauvorrichtung werden die Verbauplatten 1 und 2 wechselweise hochgezogen. Dabei verschwenken sich die Spreizen 5 gegenüber den Widerlagerpfosten 3 und 4 gegen die Kraft der Federn 15 und 16 um etwa 5 bis 8 °. Wie die Fig. 2 zeigt, werden bei Anheben der linken Verbauplatte 1 gegenüber der rechten Verbauplatte 2 die untere Blattfeder 16 des linken Widerlagerpfostens 3 und die obere Blattfeder 15 des rechten Widerlagerpfostens 4 belastet, während die beiden anderen Blattfedern 15 und 16' entlastet sind.When dismantling a shoring device, shoring panels 1 and 2 are raised alternately. The spreaders 5 pivot relative to the abutment posts 3 and 4 against the force of the springs 15 and 16 by about 5 to 8 °. As shown in FIG. 2, when the left shoring plate 1 is raised compared to the right shoring plate 2, the lower leaf spring 16 of the left abutment post 3 and the upper leaf spring 15 of the right abutment post 4 are loaded, while the other two leaf springs 15 and 16 'are relieved.

Um eine beidseitige Belastung der Blattfedern zu erreichen, sind bei der Ausführungsform gemäß Fig. 4 an den Lagerbuchsen 12' parallel zu den Auflagestegen 21 übergreifende Teile 23 vorgesehen, die zwischen sich und dem Auflagesteg 21 eine Durchgangsöffnung 22 für die Blattfedern 15 und 16 bilden. Durch diese Maßnahme wird das Federvermögen der Blattfedern besser genutzt und eine Progressivität erreicht, weil die Federn 15 und 16 mit einer einander entgegenwirkenden Vorspannung eingebaut sind, so daß die jeweils zweite Feder erst bei größeren Auslenkungen wirksam wird.In order to achieve a load on both sides of the leaf springs, in the embodiment according to FIG. 4 parts 23 are provided on the bearing bushes 12 'parallel to the support webs 21 and form a through opening 22 for the leaf springs 15 and 16 between them and the support web 21. This measure makes better use of the spring capacity of the leaf springs and achieves progressiveness because the springs 15 and 16 are installed with a counteracting bias, so that the second spring only becomes effective with larger deflections.

Bezugszeichenliste:Reference symbol list:

11
linke Verbauplatteleft shoring plate
22nd
rechte Verbauplatteright shoring plate
33rd
linke Stützeleft support
44th
rechte Stützeright support
55
SpreizeSpreads
66
linke Schwenkachseleft pivot axis
77
rechte Schwenkachseright swivel axis
99
Spindelspindle
1010th
SpindelmutterSpindle nut
1111
DistanzrohrSpacer tube
1212th
LagerbuchseBearing bush
12'12 '
LagerbuchseBearing bush
1313
ZwischenbuchseIntermediate socket
1414
SteckbolzenPlug pin
1515
obere Blattfederupper leaf spring
1616
untere Blattfederlower leaf spring
16'16 '
untere Blattfederlower leaf spring
1717th
WiderlagerplatteAbutment plate
1818th
KlemmplatteClamping plate
1919th
Schraubescrew
2020th
DurchgangslochThrough hole
2121
AuflagestegFootbridge
2222
DurchgangsöffnungThrough opening
2323
übergreifendes Teiloverarching part

Claims (9)

Verbauvorrichtung zum Abstützen von Grabenwänden mit zwei großflächigen Verbauplatten (1,2), die von einem in der Mitte der Verbauplatten (1,2) angeordneten Stützrahmen oder zwei an den Enden der Verbauplatten (1,2) angeordneten Stützrahmen auf Abstand gehalten und zu einer Einheit verbunden sind, wobei ein Stützrahmen aus
zwei vertikalen, im Querschnitt U-förmigen Widerlagerpfosten (3,4) und zwei um horizontale Achsen (6,7) schwenkbar mit den Widerlagerpfosten (3,4) verbundenen, längenveränderbaren Spreizen (5) besteht und die Spreizen (5) mittels an den Widerlagerpfosten (3,4) befestigten Blattfedern (15,16), deren federnden Enden von oben und unten mit Vorspannung gegen die Spreizen (5) drücken, rechtwinklig zu den Widerlagerpfosten (3,4) und Verbauplatten (1,2) gehalten sind, dadurch gekennzeichnet, daß oberhalb und unterhalb der horizontalen Achsen (6,7) parallel zu diesen Achsen (6,7) in den Widerlagerpfosten (3,4) ebene Widerlagerplatten (17) angeordnet sind, auf welchen je mindestens eine im wesentlichen ebene Blattfeder (15,16) leicht auswechselbar befestigt ist.Shoring device for supporting trench walls with two large-area shoring plates (1, 2), which are kept at a distance from one of a support frame arranged in the center of the shoring plates (1, 2) or two support frames arranged at the ends of the shoring plates (1, 2) Unit are connected, with a support frame
two vertical, cross-sectionally U-shaped abutment posts (3,4) and two pivotable about horizontal axes (6,7) connected to the abutment posts (3,4), length-adjustable spreaders (5) and the spreaders (5) by means of Abutment posts (3, 4) fastened leaf springs (15, 16), the resilient ends of which press against the spreaders (5) from above and below with prestress, are held at right angles to the abutment posts (3, 4) and shoring plates (1, 2), characterized in that above and below the horizontal axes (6,7) parallel to these axes (6,7) in the abutment posts (3,4) are arranged flat abutment plates (17), on each of which at least one substantially flat leaf spring ( 15, 16) is attached in an easily replaceable manner. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Blattfeder (15,16) in dem auf die Widerlagerplatte (17) zu befestigenden Bereich in der Längsmittenebene ein Durchgangsloch (20) aufweist, das bei Anlage der Blattfeder (15,16) an der Basiswand der Widerlagerpfosten (3,4) mit einer Gewindebohrung in der Widerlagerplatte (17) korrespondiert und mittels einer Schraube (19) und einer Klemmplatte (18) auf der Widerlagerplatte (17) festschraubbar ist.Device according to claim 1, characterized in that the leaf spring (15, 16) has a through hole (20) in the area to be fastened to the abutment plate (17) in the longitudinal center plane, which through hole of the leaf spring (15, 16) lies against the base wall the abutment post (3, 4) corresponds to a threaded hole in the abutment plate (17) and can be screwed onto the abutment plate (17) by means of a screw (19) and a clamping plate (18). Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die im wesentlichen rechteckige Widerlagerplatte (17) an den Seitenwänden der U-förmigen Widerlagerpfosten (3,4) festgeschweißt ist.Apparatus according to claim 1 or 2, characterized in that the substantially rectangular abutment plate (17) is welded to the side walls of the U-shaped abutment post (3, 4). Vorrichtung nach Anspruch 2 oder 3, dadurch gekennzeichnet, daß die Klemmplatte (18) mit ihrer der Basiswand der Widerlagerpfosten (3,4) zugewandten Kante an der Basiswand angeschweißt ist.Device according to claim 2 or 3, characterized in that the clamping plate (18) is welded to the base wall with its edge facing the base wall of the abutment posts (3, 4). Vorrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die Blattfeder (15,16) aus nur einem Federblatt besteht.Device according to one of claims 1 to 4, characterized in that the leaf spring (15, 16) consists of only one spring leaf. Vorrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die Blattfedern (16) aus zwei oder drei Federblättern bestehen, wobei das an der Spreize (5) anliegende Federblatt länger ist als das darauf aufliegende Federblatt.Device according to one of claims 1 to 4, characterized in that the leaf springs (16) consist of two or three spring leaves, the spring leaf resting on the spreader (5) being longer than the spring leaf resting thereon. Vorrichtung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß das freie Ende der Blattfedern (15,16,16') bei rechtwinklig zu den Widerlagerpfosten (3,4) stehenden Spreizen (5) mit Vorspannung auf einem Auflagesteg (21) aufliegt, der oberhalb und unterhalb der Schwenkachse (6,7) an einer Lagerbuchse (12) der Spreize (5) angebracht ist.Device according to one of claims 1 to 6, characterized in that the free end of the leaf springs (15, 16, 16 ') rests with pretension on a support web (21) with spreaders (5) standing at right angles to the abutment posts (3, 4) , which is attached above and below the pivot axis (6, 7) to a bearing bush (12) of the strut (5). Vorrichtung nach Anspruch 7, dadurch gekennzeichnet, daß an der Lagerbuchse (12') parallel zum Auflagesteg (21) ein die Blattfeder (15,16,16') übergreifendes Teil (23) angeordnet ist.Apparatus according to Claim 7, characterized in that a part (23) which overlaps the leaf spring (15, 16, 16 ') is arranged on the bearing bush (12') parallel to the support web (21). Vorrichtung nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß der Abstand der Widerlagerplatten (17) von den Schwenkachsen (6,7) und von den Enden oder Lagerbuchsen (12,12') der Spreizen (5) so bemessen ist, daß mindestens eine Widerlagerplatte (17) einen das maximale Verschwenken der Spreizen (5) begrenzenden Anschlag bildet.Device according to one of claims 1 to 8, characterized in that the distance between the abutment plates (17) from the pivot axes (6, 7) and from the ends or bearing bushes (12, 12 ') of the spreaders (5) is dimensioned such that at least one abutment plate (17) forms a stop limiting the maximum pivoting of the spreaders (5).
EP93115200A 1992-09-22 1993-09-21 Shoring device Withdrawn EP0589419A1 (en)

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DE4231614A DE4231614A1 (en) 1992-09-22 1992-09-22 Shoring device
DE4231614 1992-09-22

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WO2021189751A1 (en) * 2020-03-25 2021-09-30 上海建工二建集团有限公司 Prestress string annular support system, and deformation control method thereof

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JPS6073914A (en) * 1983-09-30 1985-04-26 Umezawa Eng:Kk Sheathing device

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