EP0286782B1 - Impact attenuation device - Google Patents

Impact attenuation device Download PDF

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Publication number
EP0286782B1
EP0286782B1 EP88101106A EP88101106A EP0286782B1 EP 0286782 B1 EP0286782 B1 EP 0286782B1 EP 88101106 A EP88101106 A EP 88101106A EP 88101106 A EP88101106 A EP 88101106A EP 0286782 B1 EP0286782 B1 EP 0286782B1
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EP
European Patent Office
Prior art keywords
attenuation device
impact attenuation
buffer element
impact
clamping
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
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EP88101106A
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German (de)
French (fr)
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EP0286782A1 (en
Inventor
Hermann Hans Urlberger
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SPS Schutzplanken GmbH
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SPS Schutzplanken GmbH
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Priority claimed from DE19873708861 external-priority patent/DE3708861C2/en
Application filed by SPS Schutzplanken GmbH filed Critical SPS Schutzplanken GmbH
Priority to AT88101106T priority Critical patent/ATE62517T1/en
Publication of EP0286782A1 publication Critical patent/EP0286782A1/en
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Publication of EP0286782B1 publication Critical patent/EP0286782B1/en
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    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
    • E01F15/00—Safety arrangements for slowing, redirecting or stopping errant vehicles, e.g. guard posts or bollards; Arrangements for reducing damage to roadside structures due to vehicular impact
    • E01F15/14—Safety arrangements for slowing, redirecting or stopping errant vehicles, e.g. guard posts or bollards; Arrangements for reducing damage to roadside structures due to vehicular impact specially adapted for local protection, e.g. for bridge piers, for traffic islands
    • E01F15/145—Means for vehicle stopping using impact energy absorbers
    • E01F15/146—Means for vehicle stopping using impact energy absorbers fixed arrangements

Definitions

  • the invention relates to impact dampers for catching and braking vehicles with buffer elements and spaced-apart, standing on a stand device and displaceable in the direction of travel cross frame, on the sides of which are arranged scaly overlapping side plates, the buffer elements being plastically deformable during an impact.
  • the invention has for its object to provide an impact damper of the type mentioned, in which the movement of a cross frame caused by an impact can be braked by deformation work.
  • the stand device is designed as a buffer element.
  • the buffer element is designed as a plate construction which is essentially diamond-shaped in the side view and is open towards the longitudinal side of the impact damper.
  • the diamond corners of the plate construction which run in the transverse direction and each point to the opposite transverse frame, can be flattened to form an impact surface.
  • the buffer element changes its shape to a flat structure, for example the shape of a rectangle, and thereby raises the transverse frame. In this way, the impact energy is consumed by deformation work and lifting work.
  • the plate construction can be reinforced by additional walls that run obliquely and parallel to a diamond wall of the buffer element. It is advantageous that the additional walls on the one hand on a side edge along a horizontal connecting line with a wall of the Buffer element and with the opposite side edge on the cross frame or a vertical partition of the buffer element are attached. Such a fastening can be a predetermined breaking fastening.
  • the attachment can be designed as a screw-slip attachment, in which the screw connection enables a relative movement between the additional wall and the intermediate wall when a certain value is exceeded.
  • crash dampers in which at least one rope is guided in the longitudinal direction from an anchorage at the head end of the crash damper to an end support on both sides of the transverse frame, it can be provided that the transverse frame is raised against the tension resistance of the rope.
  • the stand device designed as a buffer element is secured against lifting off on the floor by means of a guide device arranged on the floor. Only the cross frame to which the ropes are attached is raised.
  • the guide device can consist of a rail attached to the floor, which cooperates with a holding device on the buffer element.
  • the rail can have a T-shaped profile, the holding device then consisting of a block with a groove corresponding to the T-shaped profile.
  • the T-profile engages in the groove, so that a positive connection is obtained which, however, allows the entire component, ie the transverse frame including the buffer element, to move in the longitudinal direction.
  • a clamping device is arranged between the cross frame and the standing device, which opposes the relative movement between these two components.
  • This clamping device can consist of a clamping block with wedge-shaped friction inserts which engage a substantially vertical rod which is attached to the base of the buffer element.
  • the clamping block has a recess with walls which narrow downwards in a wedge shape and through which the rod projects.
  • the friction inserts are inserted into a free gap between the rod and the walls of the recess. During an upward movement, the friction inserts are then forced into the gap and cause wedging, which increases the friction work.
  • the brackets for the cables can be pivoted in a vertical plane. This prevents the ropes from kinking.
  • vertical slots are formed in the end support and that the rope end fastening allows the ropes to be pivoted in a vertical direction behind the slots.
  • the crash cushion shown in Fig. 1 consists of a series of spaced transverse frames 1, each carrying side plates 4 on their side frame parts.
  • the side plates 4 overlap from one cross frame to the other so that the crash cushion can telescopically collapse in the event of an impact.
  • the cross frame 1 have a stand device which allows movement of the cross frame on the floor.
  • Ropes 6 are tensioned to the side of the cross frame, with one end at the head end of the crash cushion in the floor and the other end are anchored to an end support.
  • the transverse frames have brackets 7 on their lateral frame parts, in which the ropes 6 are guided. At least those brackets that are arranged on the last cross frame before the end support can be pivoted in a vertical plane. However, it is advantageous if all the holders can be pivoted in this way (see FIG. 6).
  • the stand device 5 is designed as a buffer element 2.
  • a buffer element 2 has an essentially diamond-shaped or kite-shaped profile in the side view and is designed as a box-like plate construction, the ends of which facing the side plates 4 are essentially open (see FIG. 3).
  • the buffer element 2 deforms on impact into a flat structure, for example in the form of a rectangle, the long sides of which lie against the cross frame (cf. FIG. 1, right example).
  • the transverse frame 1 is raised during this deformation. This lifting takes place against the tension resistance of the lateral guide ropes 6.
  • the mounting of the side plates can be designed so that the lifting movement of the cross frame is not hindered by the side plates;
  • the fastening screws which serve to fix the side plates on the cross frame, can be provided in a groove-like guide on the cross frame, the clamping force being designed so that both the telescopic pushing together of the side plates and the upward movement of the cross frame is made possible.
  • the buffer element 2 is stiffened with additional reinforcements.
  • these reinforcements are formed by additional walls 8, which are only shown on one side in the drawing. However, they can also be arranged in the diamond space opposite. These additional walls run obliquely to the upper roof-shaped side wall of the buffer element and are lamellar staggered, with a vertical intermediate wall 22 protruding downward from the upper diamond edge, on which the frame-side edge 21 'is fixed. The side edge 21 facing away from the frame is welded to the corresponding wall of the buffer element 2.
  • the additional walls 8 are destroyed, since the stroke of the diamond is determined by the external dimensioning of the diamond sides; the stroke of the outer walls is greater than that of the first and further additional walls, so that there is a staggered tear-off of either the connection point or any intended breaking points.
  • a screw-slip attachment 23 between the additional walls 21 'and the vertical intermediate wall 22 an additional stroke reserve by overlapping additional wall sections 8', which are screwed together, whereby a precisely metered resistance can be obtained.
  • the stand device 5 is secured against being lifted off the floor by means of a guide device 10 arranged on the floor.
  • the guide device 10 consists of a rail 10 'and a holding device 14 fastened to the buffer element 2.
  • the rail has a T-shaped profile on which a block 15 of the holding device 14 is placed.
  • the block 15 has a groove 16 which corresponds in its shape to the T-shaped profile of the rail 10 '.
  • Block 15 is divided into two, wherein both parts are flanged to the buffer element (see. Fig. 4).
  • the buffer element 2 is equipped with a clamping device 9, which is arranged between the cross frame 1 and the stand device 5 and, in the event of an impact, opposes the upward relative movement between these two components.
  • the clamping device consists of a wedge-shaped Reibeinalgen 17 'having clamping block 17.
  • the friction inserts act on a fixed to a base 19 of the buffer element 2 rod 18.
  • the rod 18 can be suitably, in particular by means of a flange connection , be fixed at the location of the buffer element 2 at which the holding device 14 is also connected to the buffer element.
  • the rod 18 projects through a recess 20 of the clamping block 17, the recess being dimensioned such that there is a sufficient gap between the rod and the walls of the recess.
  • the walls of the recess run downwards in a wedge shape, so that the correspondingly designed friction inserts 17, which are inserted into this free gap, wedge when the clamping block moves upwards between the walls of the recess 20 and the rod 18 and oppose the movement of a frictional force.
  • the rod and the recess can be correspondingly conical.
  • the end support 11 has vertical slots 13 at the attachment point of the cables 6, through which the cables are passed.
  • the rope end attachment behind the end support 11 is designed so that pivoting of the ropes in the vertical slots is possible.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
  • Vibration Dampers (AREA)

Abstract

An impact attenuation device for catching and retarding vehicles in front of obstacles next to a road has transverse frames (1) which are arranged one behind the other at a distance, are each situated on an upright (5) and can be displaced with the latter in the longitudinal direction, so that side plates (4) which are mounted laterally on the transverse frames and overlap in imbricated fashion are pushed one inside the other in the manner of a telescope. The upright (5) is designed as an element (2) having an essentially rhomboid cross- section and deforming plastically upon impact, during which deformation the supported transverse frame (1) is raised against the clamping resistance of guide cables (6) clamping behind the side plates (4) (right in the figure). A clamping device (9), which is arranged on a longitudinal guide rail (10') between the transverse frame (1) and the retaining piece (14) of the upright (5), counters this lifting movement with frictional resistance. <IMAGE>

Description

Die Erfindung betrifft Anpralldämpfer zum Auffangen und Abbremsen von Fahrzeugen mit Pufferelementen und im Abstand hintereinander angeordneten, auf einer Standeinrichtung stehenden und in Fahrtrichtung verschiebbaren Querrahmen, an deren Seiten sich schuppenförmig überlappende Seitenplatten angeordnet sind, wobei die Pufferelemente während eines Aufpralls plastisch verformbar sind.The invention relates to impact dampers for catching and braking vehicles with buffer elements and spaced-apart, standing on a stand device and displaceable in the direction of travel cross frame, on the sides of which are arranged scaly overlapping side plates, the buffer elements being plastically deformable during an impact.

Aus der DE-PS 26 29 507 ist eine Vorrichtung zum Auffangen von aufprallenden Fahrzeugen bekannt, bei der zwischen den Querrahmen die Zwischendistanz Überbrückende Pufferelemente vorgesehen sind, die sich beim Aufprall eines Fahrzeugs auf den Anpralldämpfer zusammendrücken und durch die plastische Formänderungsarbeit Energie aufzehren. Eine derartige Vorrichtung erfordert einen hohen Reparaturaufwand, da die gesamten Pufferelemente eines Zwischenraums ersetzt werden müssen und derartige Pufferelemente relativ teuer sind.From DE-PS 26 29 507 a device for catching impacting vehicles is known, in which the intermediate distance bridging buffer elements are provided between the cross frames, which compress when a vehicle strikes the impact damper and absorb energy through the plastic deformation work. Such a device requires a high repair effort, since the entire buffer elements of an intermediate space must be replaced and such buffer elements are relatively expensive.

Der Erfindung liegt die Aufgabe zugrunde, einen Anpralldämpfer der eingangs erwähnten Art zu schaffen, bei dem die durch einen Stoß bewirkte Bewegung eines Querrahmens durch Formänderungsarbeit abbremsbar ist.The invention has for its object to provide an impact damper of the type mentioned, in which the movement of a cross frame caused by an impact can be braked by deformation work.

Diese Aufgabe wird dadurch gelöst, daß die Standeinrichtung als Pufferelement ausgebildet ist.This object is achieved in that the stand device is designed as a buffer element.

Vorteilhafterweise ist dabei das Pufferelement als eine in der Seitenansicht im wesentlichen rauten- förmige, zur Längsseite des Anpralldämpfers hin offene Plattenkonstruktion ausgebildet.Advantageously, the buffer element is designed as a plate construction which is essentially diamond-shaped in the side view and is open towards the longitudinal side of the impact damper.

Dabei können die in Querrichtung verlaufenden Rautenecken der Plattenkonstruktion, die jeweils zum gegenüberliegenden Querrahmen weisen, abgeflacht sein, um eine Anprallfläche zu bilden.The diamond corners of the plate construction, which run in the transverse direction and each point to the opposite transverse frame, can be flattened to form an impact surface.

Als besonders vorteilhaft ist anzusehen, daß das Pufferelement beim Anprall seine Form zu einem flachen Gebilde, etwa der Form eines Rechtecks ändert und dabei den Querrahmen anhebt. Auf diese Weise wird die Anprallenergie durch Formänderungsarbeit und durch Hubarbeit aufgezehrt.It is to be regarded as particularly advantageous that the buffer element changes its shape to a flat structure, for example the shape of a rectangle, and thereby raises the transverse frame. In this way, the impact energy is consumed by deformation work and lifting work.

Die Plattenkonstruktion kann durch weitere Zusatzwände, die schräg und parallel zu einer Rautenwand des Pufferelements verlaufen, verstärkt sein. Dabei ist es günstig, daß die Zusatzwände zum einen an einem Seitenrand entlang einer waagerechten Verbindungslinie mit einer Wand des Pufferelements und mit dem gegenüberliegenden Seitenrand am Querrahmen oder einer senkrechten Zwischenwand des Pufferelements befestigt sind. Eine solche Befestigung kann eine Sollbruchbefestigung sein.The plate construction can be reinforced by additional walls that run obliquely and parallel to a diamond wall of the buffer element. It is advantageous that the additional walls on the one hand on a side edge along a horizontal connecting line with a wall of the Buffer element and with the opposite side edge on the cross frame or a vertical partition of the buffer element are attached. Such a fastening can be a predetermined breaking fastening.

Statt einer Sollbruchbefestigung kann die Befestigung als eine Schraub-Rutschbefestigung ausgebildet sein, bei der die Schraubverbindung bei Überschreiten eines bestimmten Werts eine Relativbewegung zwischen der Zusatzwand und der Zwischenwand ermöglicht. Bei solchen Anpralldämpfern, bei denen zumindest ein Seil von einer Verankerung am Kopfende des Anpralldämpfers bis zu einer Endabstützung beidseits der Querrahmen in Längsrichtung entlanggeführt ist, kann vorgesehen sein, daß der Querrahmen gegen den Spannwiderstand der Seile angehoben wird. Eine derartige Ausbildung ist besonders vorteilhaft, da sich auf diese Weise die Hubarbeit und somit auch die Anpralldämpfung in einem vorgegebenen Rahmen vergrößert.Instead of a predetermined breaking attachment, the attachment can be designed as a screw-slip attachment, in which the screw connection enables a relative movement between the additional wall and the intermediate wall when a certain value is exceeded. In such crash dampers, in which at least one rope is guided in the longitudinal direction from an anchorage at the head end of the crash damper to an end support on both sides of the transverse frame, it can be provided that the transverse frame is raised against the tension resistance of the rope. Such a design is particularly advantageous, since in this way the lifting work and thus also the impact absorption are increased within a predetermined range.

Hierbei ist es günstig, daß die als Pufferelement ausgebildete Standeinrichtung mittels einer am Boden angeordneten Führungsvorrichtung gegen ein Abheben am Boden gesichert ist. Es wird lediglich der Querrahmen, an dem die Seile befestigt sind, angehoben.It is advantageous here that the stand device designed as a buffer element is secured against lifting off on the floor by means of a guide device arranged on the floor. Only the cross frame to which the ropes are attached is raised.

Die Führungsvorrichtung kann dabei aus einer am Boden befestigten Schiene bestehen, die mit einer Halteeinrichtung am Pufferelement zusammenwirkt. Die Schiene kann dabei ein T-förmiges Profil aufweisen, wobei dann die Halteeinrichtung aus einem Block mit einer dem T-förmigen Profil entsprechenden Nut besteht. Das T-Profil greift in die Nut ein, so daß man formschlüssige Verbindung erhält, die jedoch eine Bewegung des gesamten Bauteils, d.h. des Querrahmens samt Pufferelement in Längsrichtung zuläßt.The guide device can consist of a rail attached to the floor, which cooperates with a holding device on the buffer element. The rail can have a T-shaped profile, the holding device then consisting of a block with a groove corresponding to the T-shaped profile. The T-profile engages in the groove, so that a positive connection is obtained which, however, allows the entire component, ie the transverse frame including the buffer element, to move in the longitudinal direction.

Zur weiteren Vergrößerung der Hubarbeit kann vorteilhafterweise vorgesehen sein, daß eine Klemmvorrichtung zwischen dem Querrahmen und der Standeinrichtung angerichtet ist, die der Relativbewegung zwischen diesen beiden Bauteilen einen Widerstand entgegensetzt.To further increase the lifting work, it can advantageously be provided that a clamping device is arranged between the cross frame and the standing device, which opposes the relative movement between these two components.

Diese Klemmvorrichtung kann aus einem Klemmblock mit keilförmigen Reibeinlagen bestehen, die an einer im wesentlichen senkrechten Stange angreifen, die am Fußpunkt des Pufferelements befestigt ist.This clamping device can consist of a clamping block with wedge-shaped friction inserts which engage a substantially vertical rod which is attached to the base of the buffer element.

Der Klemmblock weist dazu eine Ausnehmung mit sich keilförmig nach unten verengenden Wänden auf, durch welche die Stange hindurchragt. Die Reibeinlagen sind in einen freien Spalt zwischen der Stange und den Wänden der Ausnehmung eingesetzt. Bei einer Aufwärtsbewegung werden die Reibeinlagen dann in den Spalt eingezwängt und bewirken eine Verkeilung, wodurch sich die Reibarbeit erhöht.For this purpose, the clamping block has a recess with walls which narrow downwards in a wedge shape and through which the rod projects. The friction inserts are inserted into a free gap between the rod and the walls of the recess. During an upward movement, the friction inserts are then forced into the gap and cause wedging, which increases the friction work.

Für den Fall, daß alle Querrahmen bis zur Endabstützung zusammengeschoben werden, ist günstigerweise vorgesehen, daß zumindest an den letzten beiden Querrahmen vor der Endabstützung die Halterungen für die Seile in einer senkrechten Ebene schwenkbar sind. Dadurch wird ein Abknicken der Seile verhindert. Hierzu ist es auch günstig, daß in der Endabstützung senkrechte Schlitze ausgeformt sind und hinter den Schlitzen die Seilendbefestigung ein Verschwenken der Seile in einer Vertikale ermöglicht.In the event that all cross frames are pushed together up to the end support, it is advantageously provided that at least on the last two cross frames before the end support, the brackets for the cables can be pivoted in a vertical plane. This prevents the ropes from kinking. For this purpose, it is also advantageous that vertical slots are formed in the end support and that the rope end fastening allows the ropes to be pivoted in a vertical direction behind the slots.

Im folgenden wird die Erfindung anhand in der Zeichnung dargestellter Ausführungsbeispiele näher erläutert.The invention is explained in more detail below with reference to exemplary embodiments illustrated in the drawing.

Es zeigen:

  • Fig. 1 eine schematische Seitenansicht eines Ausschnitts eines Anpralldämpfers, wobei die Seitenplatten auf einer Seite entfernt sind und ein Querrahmen in angehobener Stellung gezeigt ist,
  • Fig. 2 ein abgewandeltes Ausführungsbeispiel einer Darstellung eines erfindungsgemäßen Anpralldämpfers entsprechend Fig. 1 mit Zusatzwänden,
  • Fig. 3 eine perspektivische schematische Darstellung eines Querrahmens mit als Pufferelement ausgebildeter Standeinrichtung,
  • Fig. 4 eine Halteeinrichtung bestehend aus einem Block und T-förmiger Schiene,
  • Fig. 5 eine vergrößerte Darstellung eines eine Klemmvorrichtung betreffenden Details aus Fig. 2, und
  • Fig. 6 eine Seitenansicht mehrerer zusammengeschobener Querrahmen mit zusammengerdrückten Pufferelementen.
Show it:
  • 1 is a schematic side view of a section of an impact absorber, the side plates on one side being removed and a cross frame being shown in the raised position,
  • 2 shows a modified embodiment of an illustration of an impact damper according to the invention corresponding to FIG. 1 with additional walls,
  • 3 shows a perspective schematic illustration of a transverse frame with a standing device designed as a buffer element,
  • 4 a holding device consisting of a block and a T-shaped rail,
  • 5 shows an enlarged illustration of a detail from FIG. 2 relating to a clamping device, and
  • Fig. 6 is a side view of several collapsed cross frames with compressed buffer elements.

Der in Fig. 1 dargestellte Anpralldämpfer besteht aus in Reihe in Abstand hintereinander angeordneten Querrahmen 1, die jeweils an ihren seitlichen Rahmenteilen Seitenplatten 4 tragen. Die Seitenplatten 4 überlappen sich von einem Querrahmen zum anderen, so daß der Anpralldämpfer im Falle eines Aufprallstoßes sich teleskopartig zusammenschieben kann. Die Querrahmen 1 weisen eine Standeinrichtung auf, die eine Bewegung des Querrahmens auf dem Boden zuläßt. Seitlich der Querrahmen sind Seile 6 gespannt, die mit einem Ende am Kopfende des Anpralldämpfers im Boden und mit ihrem anderen Ende an einer Endabstützung verankert sind. Die Querrahmen weisen an ihren seitlichen Rahmenteilen Halterungen 7 auf, in denen die Seile 6 geführt sind. Zumindest diejenigen Halterungen, die an den letzten Querrahmen vor der Endabstützung angeordnet sind, können in einer senkrechten Ebene verschwenkt werden. Es ist jedoch günstig, wenn alle Halterungen in dieser Weise verschwenkbar sind (vergl. Fig. 6).The crash cushion shown in Fig. 1 consists of a series of spaced transverse frames 1, each carrying side plates 4 on their side frame parts. The side plates 4 overlap from one cross frame to the other so that the crash cushion can telescopically collapse in the event of an impact. The cross frame 1 have a stand device which allows movement of the cross frame on the floor. Ropes 6 are tensioned to the side of the cross frame, with one end at the head end of the crash cushion in the floor and the other end are anchored to an end support. The transverse frames have brackets 7 on their lateral frame parts, in which the ropes 6 are guided. At least those brackets that are arranged on the last cross frame before the end support can be pivoted in a vertical plane. However, it is advantageous if all the holders can be pivoted in this way (see FIG. 6).

Die Standeinrichtung 5 ist als Pufferelement 2 ausgebildet. Ein solches Pufferelement 2 weist in der Seitenansicht ein im wesentlichen rauten- oder drachenfigurförmiges Profil auf und ist als eine kastenartige Plattenkonstruktion ausgebildet, deren den Seitenplatten 4 zugewandten Enden im wesentlichen offen sind (vergl. Fig. 3).The stand device 5 is designed as a buffer element 2. Such a buffer element 2 has an essentially diamond-shaped or kite-shaped profile in the side view and is designed as a box-like plate construction, the ends of which facing the side plates 4 are essentially open (see FIG. 3).

Das Pufferelement 2 verformt sich beim Anprall zu einem flachen Gebilde, etwa in Form eines Rechtecks, dessen Längsseiten sich an den Querrahmen anlegen (vergl. Fig. 1 rechtes Beispiel). Infolge der rauten- oder drachenfigurförmigen Querschnittsgestalt des Pufferelements 2 wird der Querrahmen 1 bei dieser Verformung angehoben. Dieses Anheben geschieht gegen den Spannwiderstand der seitlichen Führungsseile 6.The buffer element 2 deforms on impact into a flat structure, for example in the form of a rectangle, the long sides of which lie against the cross frame (cf. FIG. 1, right example). As a result of the diamond-shaped or kite-shaped cross-sectional shape of the buffer element 2, the transverse frame 1 is raised during this deformation. This lifting takes place against the tension resistance of the lateral guide ropes 6.

Die Halterung der Seitenplatten kann so ausgestaltet sein, daß die Hubbewegung der Querrahmen von den Seitenplatten nicht behindert wird; hierzu können beispielsweise die Befestigungsschrauben, die zur Festlegung der Seitenplatten an dem Querrahmen dienen, in einer nutartigen Führung am Querrahmen vorgesehen sein, wobei die Spannkraft so ausgelegt ist, daß sowohl das teleskopartige Zusammenschieben der Seitenplatten als auch die Aufwärtsbewegung des Querrahmens ermöglicht ist.The mounting of the side plates can be designed so that the lifting movement of the cross frame is not hindered by the side plates; For this purpose, for example, the fastening screws, which serve to fix the side plates on the cross frame, can be provided in a groove-like guide on the cross frame, the clamping force being designed so that both the telescopic pushing together of the side plates and the upward movement of the cross frame is made possible.

In dem in Fig. 2 dargestellten Ausführungsbeispiel ist das Pufferelement 2 mit zusätzlichen Verstärkungen versteift. Diese Verstärkungen werden bei dem dargestellten Ausführungsbeispiel durch Zusatzwände 8 gebildet, die in der Zeichnung lediglich an einer Seite dargestellt sind. Sie können jedoch auch in dem gegenüberliegenden Rautenraum angeordnet sein. Diese Zusatzwände verlaufen schräg zur oberen dachförmigen Seitenwand des Pufferelements und sind lamellenartig gestaffelt, wobei von der oberen Rautenkante eine senkrechte Zwischenwand 22 nach unten ragt, an der der rahmenseitige Seitenrand 21′ festgelegt ist. Der dem Rahmen abgewandte Seitenrand 21 ist an der entsprechenden Wand des Pufferelements 2 verschweißt. Bei einem Zusammendrücken des Pufferelements kommt es zu einer Zerstörung der Zusatzwände 8, da der Hubweg der Raute bestimmt wird durch die äußere Bemessung der Rautenseiten; der Hubweg der äußeren Wände ist größer als derjenige der ersten und weiteren Zusatzwände, so daß es zu einem gestaffelten Abriß entweder der Verbindungsstelle oder evtl. vorgesehener Sollbruchstellen kommt. Statt einer derartigen Zerstörung kann durch eine Schraub-Rutschbefestigung 23 zwischen den Zusatzwänden 21′ und der senkrechten Zwischenwand 22 eine zusätzliche Hubwegreserve durch Überlappen von Zusatzwandabschnitten 8′, die miteinander verschraubt sind, geschaffen werden, wodurch eine genau dosierte Widerstandskraft erhalten werden kann.In the embodiment shown in FIG. 2, the buffer element 2 is stiffened with additional reinforcements. In the exemplary embodiment shown, these reinforcements are formed by additional walls 8, which are only shown on one side in the drawing. However, they can also be arranged in the diamond space opposite. These additional walls run obliquely to the upper roof-shaped side wall of the buffer element and are lamellar staggered, with a vertical intermediate wall 22 protruding downward from the upper diamond edge, on which the frame-side edge 21 'is fixed. The side edge 21 facing away from the frame is welded to the corresponding wall of the buffer element 2. When the buffer element is compressed, the additional walls 8 are destroyed, since the stroke of the diamond is determined by the external dimensioning of the diamond sides; the stroke of the outer walls is greater than that of the first and further additional walls, so that there is a staggered tear-off of either the connection point or any intended breaking points. Instead of such destruction can be created by a screw-slip attachment 23 between the additional walls 21 'and the vertical intermediate wall 22 an additional stroke reserve by overlapping additional wall sections 8', which are screwed together, whereby a precisely metered resistance can be obtained.

Die Standeinrichtung 5 wird mittels einer am Boden angeordneten Führungsvorrichtung 10 gegen ein Abheben vom Boden gesichert. Die Führungsvorrichtung 10 besteht aus einer Schiene 10′ und einer am Pufferelement 2 befestigten Halteeinrichtung 14. Die Schiene weist ein T-förmiges Profil auf, auf der ein Block 15 der Halteeinrichtung 14 aufgesetzt ist. Der Block 15 besitzt eine Nut 16, die in ihrer Gesalt dem T-förmigen Profil der Schiene 10′ entspricht. Der Block 15 ist zweigeteilt, wobei beide Teile an das Pufferelement angeflanscht sind (vergl. Fig. 4).The stand device 5 is secured against being lifted off the floor by means of a guide device 10 arranged on the floor. The guide device 10 consists of a rail 10 'and a holding device 14 fastened to the buffer element 2. The rail has a T-shaped profile on which a block 15 of the holding device 14 is placed. The block 15 has a groove 16 which corresponds in its shape to the T-shaped profile of the rail 10 '. Block 15 is divided into two, wherein both parts are flanged to the buffer element (see. Fig. 4).

In dem linken Ausführungsbeispiel der Figur 2 ist das Pufferelement 2 mit einer Klemmvorrichtung 9 ausgerüstet, die zwischen dem Querrahmen 1 und der Standeinrichtung 5 angeordnet ist und im Falle eines Aufpralls der nach oben gerichteten Relativbewegung zwischen diesen beiden Bauteilen, einen Widerstand entgegensetzt. Wie im einzelnen in Fig. 5 erkennbar ist, besteht die Klemmvorrichtung aus einem keilförmige Reibeinalgen 17′ aufweisenden Klemmblock 17. Die Reibeinlagen beaufschlagen eine an einem Fußpunkt 19 des Pufferelements 2 befestigte Stange 18. Die Stange 18 kann in geeigneter Weise, insbesondere mittels einer Flanschverbindung, an der Stelle des Pufferelements 2 befestigt sein, an dem auch die Halte- einrichtung 14 mit dem Pufferelement verbunden ist. Die Stange 18 ragt durch eine Ausnehmung 20 des Klemmblocks 17 hindurch, wobei die Ausnehmung derart bemessen ist, daß ein ausreichender Spalt zwischen der Stange und den Wänden der Ausnehmung vorhanden ist. Die Wände der Ausnehmung verlaufen nach unten zu keilförmig, so daß die entsprechend ausgebildeten Reibeinlagen 17, die in diesen freien Spalt eingesetzt sind, sich bei einer Aufwärtsbewegung des Klemmblocks zwischen den Wänden der Ausnehmung 20 und der Stange 18 verkeilen und der Bewegung einer Reibkraft entgegensetzen.In the left embodiment of FIG. 2, the buffer element 2 is equipped with a clamping device 9, which is arranged between the cross frame 1 and the stand device 5 and, in the event of an impact, opposes the upward relative movement between these two components. As can be seen in detail in Fig. 5, the clamping device consists of a wedge-shaped Reibeinalgen 17 'having clamping block 17. The friction inserts act on a fixed to a base 19 of the buffer element 2 rod 18. The rod 18 can be suitably, in particular by means of a flange connection , be fixed at the location of the buffer element 2 at which the holding device 14 is also connected to the buffer element. The rod 18 projects through a recess 20 of the clamping block 17, the recess being dimensioned such that there is a sufficient gap between the rod and the walls of the recess. The walls of the recess run downwards in a wedge shape, so that the correspondingly designed friction inserts 17, which are inserted into this free gap, wedge when the clamping block moves upwards between the walls of the recess 20 and the rod 18 and oppose the movement of a frictional force.

Bei einer nicht dargestellten Ausführungsform kann die Stange und die Ausnehmung entsprechend konisch ausgebildet sein.In an embodiment that is not shown, the rod and the recess can be correspondingly conical.

Die Endabstützung 11 weist am Befestigungspunkt der Seile 6 senkrechte Schlitze 13 auf, durch die die Seile hindurchgeführt sind. Die Seilendbefestigung hinter der Endabstützung 11 ist so ausgeführt, daß ein Verschwenken der Seile in den vertikalen Schlitzen möglich ist.The end support 11 has vertical slots 13 at the attachment point of the cables 6, through which the cables are passed. The rope end attachment behind the end support 11 is designed so that pivoting of the ropes in the vertical slots is possible.

Claims (16)

1. Impact attenuation device for catching and decelerating vehicles, having buffer elements and cross frames arranged spaced one behind the other in the direction of travel and standing on a stand arrangement, connected thereto and displaceable in the direction of travel, side plates overlapping in the manner of fish scales being arranged on the sides of these cross frames, with the buffer elements being plastically deformable during impact, characterized in that the stand arrangement (5) is constructed as a buffer element (2).
2. Impact attenuation device according to Claim 1, characterized in that the buffer element (2) is in the form of a plate construction substantially rhomboid in side view and open towards the longitudinal side of the impact attenuation device.
3. Impact attenuation device according to Claim 1 or 2, characterized in that the buffer element (2) changes its shape on impact to a flat structure approximately in the shape of a rectangle and thus raises the cross frame (1).
4. Impact attenuation device according to one or more of Claims 2 to 3, characterized in that additional walls (8, 8′) are provided obliquely or parallel to a rhombus-shaped wall of the buffer element (2).
5. Impact attenuation device according to Claim 4, characterized in that the additional walls (8, 8′) are secured on one side edge (21) along a horizontal connection line to a wall of the buffer element (2) and to the opposite side edge (21′) on the cross frame or on a perpendicular intermediate wall (22) of the buffer element (2).
6. Impact attenuation device according to Claim 4 or 5, characterised in that the means of securing is a breaking securing means.
7. Impact attenuation device according to Claim 4 or 5, characterized in that the means of securing is a screw/slide securing means (23) in which the screw connection allows a relative movement between the additional wall (8′) and the intermediate wall (22), when a defined value is exceeded.
8. Impact attenuation device according to one or more of Claims 1 to 7, in which at least one respective cable held taut from an anchoring point at the head end of the impact attenuation device to an end support is respectively arranged in the longitudinal direction to the side of the cross frames and is guided on or in the latter, characterized in that the cross frame (1) may be raised in opposition to the tension resistance of the cables (6).
9. Impact attenuation device according to one or more of Claims 1 to 8, characterized in that the stand arrangement constructed as a buffer element (2) is prevented from being raised from the ground by means of a guide apparatus (10) arranged on the ground.
10. Impact attenuation device according to Claim 6, characterized in that the guide apparatus (10) comprises a rail (10′) secured to the ground and cooperating with a holding apparatus (14) on the buffer element (2).
11. Impact attenuation device according to Claim 10, characterized in that the rail (10′) has a T-shaped profile and the holding apparatus (14) comprises a block (15) having a groove (16) corresponding with the T-shaped profile.
12. Impact attenuation device according to one or more of Claims 1 to 11, characterized in that a clamping apparatus (9) is arranged between the cross frame (1) and the stand arrangement (5) and presents a resistance to the relative movement between these two structural parts.
13. Impact attenuation device according to Claim 12, characterized in that the clamping apparatus (9) comprises a clamping block (17) having wedge-shaped friction inserts (17′) and, acted upon thereby, a rod (18) secured to a base end (19) of the buffer element (2).
14. Impact attenuation device according to Claim 13, characterized in that the clamping block (17) has a recess (20) having walls which converge downwards in a wedge shape and through which the rod (18) projects, and the friction inserts (17′) are inserted in a free gap between the rod (18) and the walls of the recess (20).
15. Impact attenuation device according to one or more of Claims 8 to 14, characterized in that at least the mounting (7) for the cables (6) which is arranged on the last two cross frames (1) before the end support (11) may be pivoted in a perpendicular plane.
16. Impact attenuation device according to one or more of Claims 1 to 15, characterized in that perpendicular slots (13) are made in the end support (11), and in that behind the slots (13) the end means of securing the cables provide the possibility of pivoting the cables (6) in a vertical plane.
EP88101106A 1987-03-18 1988-01-26 Impact attenuation device Expired - Lifetime EP0286782B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88101106T ATE62517T1 (en) 1987-03-18 1988-01-26 CRASH ABSORBER.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3708861 1987-03-18
DE19873708861 DE3708861C2 (en) 1987-02-20 1987-03-18 Impact absorber

Publications (2)

Publication Number Publication Date
EP0286782A1 EP0286782A1 (en) 1988-10-19
EP0286782B1 true EP0286782B1 (en) 1991-04-10

Family

ID=6323414

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88101106A Expired - Lifetime EP0286782B1 (en) 1987-03-18 1988-01-26 Impact attenuation device

Country Status (2)

Country Link
EP (1) EP0286782B1 (en)
AT (1) ATE62517T1 (en)

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CN104264601B (en) * 2014-09-26 2016-07-27 无锡优萌模塑制造有限公司 Straight-tube telescope formula road is bored

Also Published As

Publication number Publication date
ATE62517T1 (en) 1991-04-15
EP0286782A1 (en) 1988-10-19

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