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EP0839961B1 - Barriers for traffic areas - Google Patents

Barriers for traffic areas Download PDF

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Publication number
EP0839961B1
EP0839961B1 EP97118799A EP97118799A EP0839961B1 EP 0839961 B1 EP0839961 B1 EP 0839961B1 EP 97118799 A EP97118799 A EP 97118799A EP 97118799 A EP97118799 A EP 97118799A EP 0839961 B1 EP0839961 B1 EP 0839961B1
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EP
European Patent Office
Prior art keywords
piston
cylinder cover
piston rod
compressed air
shaft pipe
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
EP97118799A
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German (de)
French (fr)
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EP0839961A1 (en
Inventor
Gernold Holler
Heinrich Jun. Meyer
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H Butting GmbH and Co KG
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H Butting GmbH and Co KG
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Application filed by H Butting GmbH and Co KG filed Critical H Butting GmbH and Co KG
Publication of EP0839961A1 publication Critical patent/EP0839961A1/en
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Classifications

    • 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
    • E01F13/00—Arrangements for obstructing or restricting traffic, e.g. gates, barricades ; Preventing passage of vehicles of selected category or dimensions
    • E01F13/04—Arrangements for obstructing or restricting traffic, e.g. gates, barricades ; Preventing passage of vehicles of selected category or dimensions movable to allow or prevent passage
    • E01F13/044—Arrangements for obstructing or restricting traffic, e.g. gates, barricades ; Preventing passage of vehicles of selected category or dimensions movable to allow or prevent passage the barrier being formed by obstructing members situated on, flush with, or below the traffic surface, e.g. with inflatable members on the surface
    • E01F13/046—Arrangements for obstructing or restricting traffic, e.g. gates, barricades ; Preventing passage of vehicles of selected category or dimensions movable to allow or prevent passage the barrier being formed by obstructing members situated on, flush with, or below the traffic surface, e.g. with inflatable members on the surface the obstructing members moving up in a translatory motion, e.g. telescopic barrier posts

Definitions

  • the invention relates to a device for optionally blocking traffic areas.
  • German utility model DE-U-9404293.4 remove Such an embodiment can be found in German utility model DE-U-9404293.4 remove.
  • This device comprises a hollow cylinder A shaft pipe sunk directly into the ground, which is located at the bottom Completed end over a base and flush at its top end by one is closed with the bottom closing plate.
  • a stake carries on its lower end a guide piston which is slidably mounted in the hollow cylinder is.
  • a bellows is arranged, which has a closed surface, from below presses against the guide piston.
  • the base has an inlet into the inner chamber of the bellows. Suitable facilities are provided that allow the inner chamber of the bellows with a fluid, e.g. B. to apply compressed air.
  • the bellows is dimensioned so that it is in the expanded state Pile drives a desired dimension out of the hollow cylinder.
  • the on closure plate located on the surface of the earth has a central bore, in who is leading the stake. In its lower starting position, the pile becomes complete withdrawn into the hollow cylinder; the top face of the pile then just ends with the sealing plate and the surface of the earth. Will the before by applying z. B. vented with compressed air bellows, so the bellows resets itself radially; then the pile sinks under his Weight back to its lower starting position and thus presses the bellows to its compressed lower position.
  • the invention has for its object the structure and operation of the above improve described device.
  • the embodiment according to the invention therefore dispenses with one Bellows.
  • the shaft pipe also encloses the Compressed air to fill the pressure chamber, so that the entire device its structure is kept simple and robust.
  • a compressed air reservoir is connected to the piston is connected to a compressed air line for its filling is.
  • a vent pipe is arranged eccentrically on which the piston rod flange is vertically displaceable, and that at its lower section projecting into the pressure chamber to a Compressed air supply can be connected and with its upper end in one directed against the piston rod in the seat of the cylinder cover provided discharge slot opens.
  • a quick installation or a problem-free replacement of the Shaft pipe internals is according to the invention by several vent pipes ensures that with its upper end in the cylinder cover are attached and together at their lower end Wear the mounting base on which the pneumatic cylinder is fixed is.
  • an im Pressure chamber of the shaft pipe arranged, a quick exhaust valve and a 5/2 way valve block provided, which is connected to an air line supplied from the outside is and via connecting lines with the two chambers of the pneumatic cylinder, with the compressed air reservoir and the ventilation pipes communicates.
  • the device shown is used to selectively shut off Traffic areas and consists of a perpendicular in the ground 1 retractable shaft pipe 2, which at its lower end via a Bottom 3 is closed and one at its upper end Shaft pipe flange 4 carries, together with a surrounding him Flange collar 5 a receptacle for a cylinder cover 6 forms. The latter lies on a cylinder cover gasket 7 and is screwed to the shaft pipe flange 4 using screws 8.
  • a double-acting pneumatic cylinder 9 arranged, which serves to move a piston.
  • the latter is designed as a piston rod flange 10 at the bottom End of a piston rod 11 is arranged by a bottom open tube formed and at its upper end via a piston rod cover 12 is closed.
  • the piston rod flange 10 is guided in the shaft pipe 2 and limits the Pressure chamber 13, which extends into the piston rod 11 up to its Piston rod cover 12 extends.
  • the piston rod 11 protrudes with its upper end through a passage opening 14 of the cylinder cover 6 through, the diameter of the passage opening 14 slightly larger than the outer diameter of the piston rod 11 is so that there is an annular ventilation slot 15.
  • the piston rod flange 10 is vertically displaceable on the ventilation pipes 18 guided and thereby secured against rotation.
  • the ventilation pipes 18 ensure a connection function fast assembly and disassembly of all components relevant components, resulting in quick interchangeability of the entire system.
  • a compressed air reservoir 22 connected to its filling can be connected to a compressed air line 23.
  • each vent tube 18 is a quick exhaust valve 24 provided, through which a rapid pressure reduction of the air pressure built up in the pressure chamber 13 is possible.
  • a valve block 25 is arranged, which is a quick exhaust valve as well as a 5/2 way valve, to one of externally supplied air line 26 is connected and via connecting lines 23, 28, 29, 30 with the compressed air reservoir 22, with the two chambers of the pneumatic cylinder 9 and with the ventilation pipes 18 communicates.
  • a second from the outside supplied air line 27 opens into the pressure chamber 13 and serves to fill it.
  • Each vent pipe 18 has in its upper end portion a bead 31, which serves as a sealing surface for a ball 32 and together with this forms a one-way valve, which is in the Piston at rest is closed and thereby one Penetration of water or other contaminants into the ventilation pipe 18 and prevented in the quick exhaust valve 24.
  • the piston is retracted, i.e. the pressure in the Pressure chamber 13 dismantled, then opens through the ventilation pipes 18 upward flowing compressed air, the one-way valve 31, 32 and flows through the blowout slot 19 directly against the outer jacket the piston rod 11, which is cleaned so that penetration of foreign bodies is prevented.
  • This cleaning effect is amplified when the piston is raised, that the in the shaft pipe space above the piston rod flange 10 located air from the piston rod flange 10 pressed against the piston rod 11 through the ventilation slot 15 becomes.
  • the function of the shut-off device is as follows:
  • the Pneumatic cylinder 9 is pressurized with compressed air in the "stroke" direction.
  • the pressure chamber 13 is via the air line 27 filled with compressed air.
  • the air reservoir 22 is also filled with compressed air.
  • the piston rod flange 10 sealing on the underside the cylinder cover seal 7, whereby the pressure chamber 13 seals becomes. In this case, 27 continues to be air via the air line blown into the pressure chamber 13.
  • the air lines 26, 27 vented. Due to this pressure drop, the Quick exhaust valves 24 opened in the ventilation pipes 18; the compressed air in the pressure chamber 13 is then vented via the vent pipes 18 and the air line 27.
  • the entry movement can only take place when the Pressure chamber 13 is relaxed to atmospheric pressure.
  • the Actual retraction of the piston is then in the Compressed air storage 22 initiated compressed air. Thereby it is ensured that the piston is also in the event of a power failure Can perform downward movement.
  • the volume of the Air accumulator 22 dimensioned so that it is sufficient to the piston to move to its lower end position and its piston rod cover 12 in the seat 16 of the cylinder cover 6 on the arranged there Pull O-ring 17. This is the interior of the shaft pipe protected from environmental influences.
  • the ventilation pipes are used to quickly reduce the pressure in the air pressure in the pressure chamber 13, they act as a tie rod between the cylinder cover 6 and assembly floor 20, they serve as a displacement guide for the piston and prevent its rotation, and they ensure - as already explained above - a quick interchangeability of the entire shaft pipe insert.
  • Figure 2 shows the right half of the cylinder cover in vertical section 6 with its conical seat 16 for receiving the piston rod cover 12, with an upper annular groove 33 for receiving of the O-ring 17 and with the annular blow-out slot 19, in which opens a threaded bore 34 into which the upper end of a Vent pipe 18 is screwed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Actuator (AREA)
  • Traffic Control Systems (AREA)
  • Road Signs Or Road Markings (AREA)
  • Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)

Abstract

The piston (10,11,12) is connected with a connecting rod (11), which with its upper end extends through an aperture in a cylinder cover (6) closing the upper end of the shaft pipe (2) and connecting flush with the ground. The movement of the piston is by means of a double-acting, externally controllable pneumatic cylinder (9), which is connected to a controllable compressed air conduit (28,29). The piston is formed as a connecting rod flange (10), at the lower end of which the connecting rod is formed. With the piston moved outwards, the piston connecting rod flange locates in a sealed fashion on the underside of the cylinder cover.

Description

Die Erfindung betrifft eine Vorrichtung zum wahlweisen Absperren von Verkehrsflächen.The invention relates to a device for optionally blocking traffic areas.

Eine derartige Ausführungsform lässt sich dem deutschen Gebrauchsmuster DE-U-9404293.4 entnehmen. Diese Vorrichtung umfasst ein als Hohlzylinder ausgebildetes, unmittelbar in das Erdreich eingelassenes Schachtrohr, das an seinem unteren Ende über eine Basis abgeschlossen und an seinem oberen Ende von einer bündig mit dem Boden abschließenden Verschlussplatte verschlossen ist. Ein Pfahl trägt an seinem unteren Ende einen Führungskolben, der im Hohlzylinder verschiebbar gelagert ist. Zwischen der Basis des Hohlzylinders und dem Führungskolben des Pfahles ist ein Faltenbalg angeordnet, der eine geschlossene Fläche besitzt, die von unten gegen den Führungskolben drückt. Die Basis weist einen Einlass in die Innenkammer des Faltenbalges auf. Vorgesehen sind geeignete Einrichtungen, die es gestatten, die Innenkammer des Faltenbalges mit einem Fluid, z. B. Druckluft zu beaufschlagen. Der Faltenbalg ist so dimensioniert, dass er in expandiertem Zustand den Pfahl ein gewünschtes Maß aus dem Hohlzylinder heraus nach oben treibt. Die an der Erdoberfläche befindliche Verschlussplatte weist eine zentrale Bohrung auf, in der der Pfahl geführt ist. In seiner unteren Ausgangsposition wird der Pfahl vollständig in den Hohlzylinder zurückgezogen; die obere Stirnfläche des Pfahles schließt dann eben mit der Verschlussplatte und der Erdoberfläche ab. Wird der zuvor durch Beaufschlagung z. B. mit Druckluft expandierte Faltenbalg entlüftet, so stellt sich der Faltenbalg radial zurück; anschließend sinkt der Pfahl unter seinem Gewicht wieder in seine untere Ausgangsstellung zurück und drückt damit den Faltenbalg in seine komprimierte untere Position.Such an embodiment can be found in German utility model DE-U-9404293.4 remove. This device comprises a hollow cylinder A shaft pipe sunk directly into the ground, which is located at the bottom Completed end over a base and flush at its top end by one is closed with the bottom closing plate. A stake carries on its lower end a guide piston which is slidably mounted in the hollow cylinder is. Between the base of the hollow cylinder and the guide piston of the pile a bellows is arranged, which has a closed surface, from below presses against the guide piston. The base has an inlet into the inner chamber of the bellows. Suitable facilities are provided that allow the inner chamber of the bellows with a fluid, e.g. B. to apply compressed air. The bellows is dimensioned so that it is in the expanded state Pile drives a desired dimension out of the hollow cylinder. The on closure plate located on the surface of the earth has a central bore, in who is leading the stake. In its lower starting position, the pile becomes complete withdrawn into the hollow cylinder; the top face of the pile then just ends with the sealing plate and the surface of the earth. Will the before by applying z. B. vented with compressed air bellows, so the bellows resets itself radially; then the pile sinks under his Weight back to its lower starting position and thus presses the bellows to its compressed lower position.

Der Erfindung liegt die Aufgabe zugrunde, Aufbau und Wirkungsweise der vorstehend beschriebenen Vorrichtung zu verbessern.The invention has for its object the structure and operation of the above improve described device.

Diese Aufgabe wird erfindungsgemäß durch eine Vorrichtung mit den Merkmalen des Anspruches 1 gelöst. This object is achieved by a device with the features of claim 1 solved.

Die erfindungsgemäße Ausführungsform verzichtet somit auf einen Faltenbalg. Das Schachtrohr umschließt zugleich auch den mit Druckluft zu befüllenden Druckraum, so daß die gesamte Vorrichtung in ihrem Aufbau einfacher und robuster gehalten ist.The embodiment according to the invention therefore dispenses with one Bellows. The shaft pipe also encloses the Compressed air to fill the pressure chamber, so that the entire device its structure is kept simple and robust.

Um auch bei einem etwaigen Energieausfall ein sicheres Einfahren der Kolbenstange gewährleisten zu können, ist erfindungsgemäß vorgesehen, daß an den Pneumatikzylinder zur Einleitung der Einfahrbewegung des Kolbens ein Druckluftspeicher angeschlossen ist, der zu seiner Befüllung mit einer Druckluftleitung verbindbar ist.To ensure a safe run-in even in the event of a power failure To be able to ensure the piston rod is according to the invention provided that to the pneumatic cylinder to initiate the retracting movement a compressed air reservoir is connected to the piston is connected to a compressed air line for its filling is.

Zum schnelleren Druckabbau im Druckraum sowie zur gleichzeitigen Führung des Kolbens ist es vorteilhaft, wenn im Schachtrohr zumindest ein Entlüftungsrohr exzentrisch angeordnet ist, an dem der Kolbenstangenflansch höhenverschieblich geführt ist, und das an seinem unteren, in den Druckraum ragenden Abschnitt an eine Druckluftzufuhr anschließbar ist und mit seinem oberen Ende in einem gegen die Kolbenstange gerichteten, im Sitz des Zylinderdeckels vorgesehenen Ausblasschlitz mündet.For faster pressure reduction in the pressure chamber as well as for simultaneous Guiding the piston, it is advantageous if at least in the shaft pipe a vent pipe is arranged eccentrically on which the piston rod flange is vertically displaceable, and that at its lower section projecting into the pressure chamber to a Compressed air supply can be connected and with its upper end in one directed against the piston rod in the seat of the cylinder cover provided discharge slot opens.

Eine schnelle Montage bzw. ein problemloses Austauschen der Schachtrohreinbauten ist erfindungsgemäß durch mehrere Entlüftungsrohre gewährleistet, die mit ihrem oberen Ende im Zylinderdeckel befestigt sind und an ihrem unteren Ende gemeinsam einen Montageboden tragen, auf dem der Pneumatikzylinder festgelegt ist.A quick installation or a problem-free replacement of the Shaft pipe internals is according to the invention by several vent pipes ensures that with its upper end in the cylinder cover are attached and together at their lower end Wear the mounting base on which the pneumatic cylinder is fixed is.

Für eine einfache Druckluftsteuerung ist erfindungsgemäß ein im Druckraum des Schachtrohres angeordneter, ein Schnellentlüftungsventil sowie ein 5/2 Wegeventil umfassender Ventilblock vorgesehen, der an eine von außen zugeführte Luftleitung angeschlossen ist und über Anschlußleitungen mit den beiden Kammern des Pneumatikzylinders, mit dem Druckluftspeicher und den Entlüftungsrohren in Verbindung steht.For a simple compressed air control, an im Pressure chamber of the shaft pipe arranged, a quick exhaust valve and a 5/2 way valve block provided, which is connected to an air line supplied from the outside is and via connecting lines with the two chambers of the pneumatic cylinder, with the compressed air reservoir and the ventilation pipes communicates.

Weitere Ausführungsarten der Erfindung sind Gegenstand der Unteransprüche und werden in Verbindung mit weiteren Vorteilen der Erfindung anhand eines Ausführungsbeispiels näher erläutert.Further embodiments of the invention are the subject of the dependent claims and are in connection with further advantages of the invention explained in more detail using an exemplary embodiment.

In der Zeichnung ist eine als Beispiel dienende Ausführungsform der Erfindung dargestellt. Es zeigen:

Figur 1
im lotrechten Längsschnitt eine Absperrvorrichtung und
Figur 2
ein Detail der Figur 1 in vergrößertem Maßstab.
In the drawing, an exemplary embodiment of the invention is shown. Show it:
Figure 1
in the vertical longitudinal section a shut-off device and
Figure 2
a detail of Figure 1 on an enlarged scale.

Die dargestellte Vorrichtung dient zum wahlweisen Absperren von Verkehrsflächen und besteht aus einem lotrecht in den Boden 1 versenkbaren Schachtrohr 2, das an seinem unteren Ende über einen Boden 3 verschlossen ist und an seinem oberen Ende einen Schachtrohrflansch 4 trägt, der zusammen mit einem ihn umschließenden Flanschkragen 5 eine Aufnahme für einen Zylinderdeckel 6 bildet. Letzterer liegt auf einer Zylinderdeckeldichtung 7 auf und ist mit dem Schachtrohrflansch 4 über Schrauben 8 verschraubt. The device shown is used to selectively shut off Traffic areas and consists of a perpendicular in the ground 1 retractable shaft pipe 2, which at its lower end via a Bottom 3 is closed and one at its upper end Shaft pipe flange 4 carries, together with a surrounding him Flange collar 5 a receptacle for a cylinder cover 6 forms. The latter lies on a cylinder cover gasket 7 and is screwed to the shaft pipe flange 4 using screws 8.

In dem Schachtrohr 2 ist ein doppelt wirkender Pneumatikzylinder 9 angeordnet, der zur Verschiebung eines Kolbens dient. Letzterer ist als Kolbenstangenflansch 10 ausgebildet, der am unteren Ende einer Kolbenstange 11 angeordnet ist, die durch ein unten offenes Rohr gebildet und an ihrem oberen Ende über einen Kolbenstangendeckel 12 verschlossen ist. Der Kolbenstangenflansch 10 ist im Schachtrohr 2 geführt und begrenzt unter sich den Druckraum 13, der sich in die Kolbenstange 11 hinein bis zu deren Kolbenstangendeckel 12 erstreckt. Die Kolbenstange 11 ragt mit ihrem oberen Ende durch eine Durchtrittsöffnung 14 des Zylinderdeckels 6 hindurch, wobei der Durchmesser der Durchtrittsöffnung 14 etwas größer als der Außendurchmesser der Kolbenstange 11 ist, so daß sich ein ringförmiger Belüftungsschlitz 15 ergibt. Bei abgesenktem, sich in Ruhelage befindlichen Kolben taucht der Kolbenstangendeckel 12 in einen konischen Sitz 16 im Zylinderdeckel 6 ein und ist hier über einen im Sitz 16 angeordneten O-Ring 17 abgedichtet. Bei ausgefahrenem Kolben liegt der Kolbenstangenflansch 10 abdichtend an der Unterseite der Zylinderdeckeldichtung 7 an und verschließt dann auch einen Luftaustausch über den Belüftungsschlitz 15.In the shaft pipe 2 is a double-acting pneumatic cylinder 9 arranged, which serves to move a piston. The latter is designed as a piston rod flange 10 at the bottom End of a piston rod 11 is arranged by a bottom open tube formed and at its upper end via a piston rod cover 12 is closed. The piston rod flange 10 is guided in the shaft pipe 2 and limits the Pressure chamber 13, which extends into the piston rod 11 up to its Piston rod cover 12 extends. The piston rod 11 protrudes with its upper end through a passage opening 14 of the cylinder cover 6 through, the diameter of the passage opening 14 slightly larger than the outer diameter of the piston rod 11 is so that there is an annular ventilation slot 15. With the piston lowered and at rest plunges the piston rod cover 12 into a conical seat 16 in Cylinder cover 6 and is arranged here in the seat 16 Sealed O-ring 17. When the piston is extended, the Piston rod flange 10 sealing on the underside of the cylinder cover gasket 7 and then closes an air exchange via the ventilation slot 15.

In die Unterseite des Zylinderdeckels 6 sind die oberen Enden mehrerer Entlüftungsrohre 18 eingeschraubt, wo sie in einen ringförmigen, gegen die Kolbenstange 11 gerichteten, im Sitz 16 des Zylinderdeckels 6 angeordneten Ausblasschlitz 19 münden. Die auf einem konzentrisch zur Achse des Schachtrohres 2 liegenden Kreis angeordneten Entlüftungsrohre 18 tragen an ihrem unteren Ende einen mit ihnen verschraubten Montageboden 20, auf dem der Pneumatikzylinder 9 über Schrauben 21 befestigt ist. Der Montageboden 20 liegt nicht - wie es Figur 1 zu suggerieren scheint - voll umfänglich an der Innenwandung des Schachtrohres 2 an sondern schließt mit diesem größere Durchbrechungen ein, die innerhalb des Druckraumes 13 einen ungezwungen Luftaustausch ermöglichen. In the bottom of the cylinder cover 6 are the upper ends screwed several ventilation pipes 18, where they in one ring-shaped, directed against the piston rod 11, in the seat 16 of the cylinder cover 6 arranged discharge slot 19 open. The on a concentric to the axis of the shaft pipe 2 Circular ventilation pipes 18 carry at their lower End a screwed mounting base 20 on which the Pneumatic cylinder 9 is fastened by screws 21. The assembly floor 20 does not lie - as Figure 1 seems to suggest - full on the inner wall of the shaft pipe 2 instead with this includes larger breakthroughs that are within of the pressure chamber 13 allow a casual air exchange.

Der Kolbenstangenflansch 10 ist an den Entlüftungsrohren 18 höhenverschieblich geführt und dadurch gegen Verdrehung gesichert.The piston rod flange 10 is vertically displaceable on the ventilation pipes 18 guided and thereby secured against rotation.

Die Entlüftungsrohre 18 gewährleisten durch eine Verbindungsfunktion aller Bauteile eine schnelle Montage bzw. Demontage der relevanten Bauteile, wodurch sich eine schnelle Austauschbarkeit des gesamten Systems ergibt.The ventilation pipes 18 ensure a connection function fast assembly and disassembly of all components relevant components, resulting in quick interchangeability of the entire system.

An den Pneumatikzylinder 9 ist zur Einleitung der Einfahrbewegung des Kolbens ein Druckluftspeicher 22 angeschlossen, der zu seiner Befüllung mit einer Druckluftleitung 23 verbindbar ist.At the pneumatic cylinder 9 is to initiate the entry movement of the piston a compressed air reservoir 22 connected to its filling can be connected to a compressed air line 23.

Im unteren Absatz jedes Entlüftungsrohres 18 ist ein Schnellentlüftungsventil 24 vorgesehen, über das ein schneller Druckabbau des im Druckraum 13 aufgebauten Luftdruckes möglich ist. Im Druckraum 13 ist ein Ventilblock 25 angeordnet, der ein Schnellentlüftungsventil sowie ein 5/2 Wegeventil umfaßt, an eine von außen zugeführte Luftleitung 26 angeschlossen ist und über Anschlußleitungen 23, 28, 29, 30 mit dem Druckluftspeicher 22, mit den beiden Kammern des Pneumatikzylinders 9 sowie mit den Entlüftungsrohren 18 in Verbindung steht. Eine zweite von außen zugeführte Luftleitung 27 mündet in den Druckraum 13 und dient zu dessen Befüllung.In the lower paragraph of each vent tube 18 is a quick exhaust valve 24 provided, through which a rapid pressure reduction of the air pressure built up in the pressure chamber 13 is possible. in the Pressure chamber 13, a valve block 25 is arranged, which is a quick exhaust valve as well as a 5/2 way valve, to one of externally supplied air line 26 is connected and via connecting lines 23, 28, 29, 30 with the compressed air reservoir 22, with the two chambers of the pneumatic cylinder 9 and with the ventilation pipes 18 communicates. A second from the outside supplied air line 27 opens into the pressure chamber 13 and serves to fill it.

Jedes Entlüftungsrohr 18 weist in seinem oberen Endabschnitt eine Sicke 31 auf, die als Dichtfläche für eine Kugel 32 dient und zusammen mit dieser ein Einwegventil bildet, das bei sich im Ruhezustand befindlichen Kolben geschlossen ist und dadurch ein Eindringen von Wasser oder anderen Verunreinigungen in das Entlüftungsrohr 18 sowie in des Schnellentlüftungsventil 24 verhindert. Wird hingegen der Kolben eingefahren, also der Druck im Druckraum 13 abgebaut, dann öffnet die durch die Entlüftungrohre 18 nach oben strömende Druckluft das Einwegventil 31, 32 und strömt durch den Ausblasschlitz 19 unmittelbar gegen den Außenmantel der Kolbenstange 11, die dadurch gereinigt wird, so daß ein Eindringen von Fremdkörpern verhindert wird. Diese Reinigungswirkung wird beim Hochfahren des Kolbens noch dadurch verstärkt, daß die sich im Schachtrohrraum oberhalb des Kolbenstangenflansches 10 befindliche Luft vom Kolbenstangenflansch 10 durch den Belüftungsschlitz 15 gegen die Kolbenstange 11 gedrückt wird.Each vent pipe 18 has in its upper end portion a bead 31, which serves as a sealing surface for a ball 32 and together with this forms a one-way valve, which is in the Piston at rest is closed and thereby one Penetration of water or other contaminants into the ventilation pipe 18 and prevented in the quick exhaust valve 24. However, if the piston is retracted, i.e. the pressure in the Pressure chamber 13 dismantled, then opens through the ventilation pipes 18 upward flowing compressed air, the one-way valve 31, 32 and flows through the blowout slot 19 directly against the outer jacket the piston rod 11, which is cleaned so that penetration of foreign bodies is prevented. This cleaning effect is amplified when the piston is raised, that the in the shaft pipe space above the piston rod flange 10 located air from the piston rod flange 10 pressed against the piston rod 11 through the ventilation slot 15 becomes.

Die Funktion der Absperrvorrichtung ist wie folgt:The function of the shut-off device is as follows:

Über die Luftleitung 26 und die Anschlußleitung 29 wird der Pneumatikzylinder 9 mit Druckluft in Richtung "Hub" beaufschlagt. Gleichzeitig wird der Druckraum 13 über die Luftleitung 27 mit Druckluft befüllt. Zugleich mit dem Druckaufbau im Druckraum 13 wird auch der Luftspeicher 22 mit Druckluft befüllt. Bei der nun einsetzenden Ausfahrbewegung des Kolbens erfolgt die Reinigung des äußeren Mantels der Kolbenstange 11 mit Hilfe der durch den Belüftungsschlitz 15 ausgeblasenen Luft in der vorstehend beschriebenen Weise. In der oberen Endlage des Kolbens liegt der Kolbenstangenflansch 10 abdichtend an der Unterseite der Zylinderdeckeldichtung 7 an, wodurch der Druckraum 13 abgedichtet wird. Dabei wird weiterhin über die Luftleitung 27 Luft in den Druckraum 13 geblasen. Durch den dadurch weiterhin stattfindenden Druckaufbau im Druckraum 13 werden nicht nur der Kolbenstangenflansch 10 sondern auch die Unterseite des Kolbenstangendeckels 12 mit Druck beaufschlagt; diese verhältnismäßig große Gesamtkolbenfläche erzeugt eine große Haltekraft, die bei einem Luftdruck von 5 bar bei realistischen Abmessungen ca. 1,2 t betragen kann.About the air line 26 and the connecting line 29 is the Pneumatic cylinder 9 is pressurized with compressed air in the "stroke" direction. At the same time, the pressure chamber 13 is via the air line 27 filled with compressed air. At the same time as the pressure builds up in the pressure chamber 13, the air reservoir 22 is also filled with compressed air. At The now starting extension movement of the piston takes place Cleaning the outer jacket of the piston rod 11 with the help of air blown through the ventilation slot 15 in the above described way. In the upper end position of the piston is the piston rod flange 10 sealing on the underside the cylinder cover seal 7, whereby the pressure chamber 13 seals becomes. In this case, 27 continues to be air via the air line blown into the pressure chamber 13. Because of the ongoing Pressure build-up in the pressure chamber 13 is not only the piston rod flange 10 but also the underside of the piston rod cover 12 pressurized; this relatively large Total piston area creates a large holding force that an air pressure of 5 bar with realistic dimensions approx. Can be 1.2 t.

Um die Einfahrbewegung des Kolbens einzuleiten, werden die Luftleitungen 26, 27 entlüftet. Durch diesen Druckabfall werden die Schnellentlüftungsventile 24 in den Entlüftungsrohren 18 aufgesteuert; die komprimierte Druckluft im Druckraum 13 wird dann über die Entlüftungsrohre 18 sowie die Luftleitung 27 entlüftet. Dabei kann die Einfahrbewegung erst dann stattfinden, wenn der Druckraum 13 auf atmosphärischen Druck entspannt ist. Die eigentliche Einfahrbewegung des Kolbens wird dann durch die im Druckluftspeicher 22 gespeicherte Druckluft eingeleitet. Dadurch wird sichergestellt, daß der Kolben auch bei Energieausfall seine Abwärtsbewegung ausführen kann. Dabei ist das Volumen des Druckluftspeichers 22 so bemessen, daß es ausreicht, um den Kolben in seine untere Endlage zu fahren und seinen Kolbenstangendeckel 12 in den Sitz 16 des Zylinderdeckels 6 auf den dort angeordneten O-Ring 17 zu ziehen. Hierdurch ist der Schachtrohrinnenraum vor Umwelteinflüssen geschützt.In order to initiate the retracting movement of the piston, the air lines 26, 27 vented. Due to this pressure drop, the Quick exhaust valves 24 opened in the ventilation pipes 18; the compressed air in the pressure chamber 13 is then vented via the vent pipes 18 and the air line 27. The entry movement can only take place when the Pressure chamber 13 is relaxed to atmospheric pressure. The Actual retraction of the piston is then in the Compressed air storage 22 initiated compressed air. Thereby it is ensured that the piston is also in the event of a power failure Can perform downward movement. The volume of the Air accumulator 22 dimensioned so that it is sufficient to the piston to move to its lower end position and its piston rod cover 12 in the seat 16 of the cylinder cover 6 on the arranged there Pull O-ring 17. This is the interior of the shaft pipe protected from environmental influences.

Die Entlüftungsrohre dienen zum schnellen Druckabbau des Luftdrucks im Druckraum 13, sie wirken als Zuganker zwischen Zylinderdeckel 6 und Montageboden 20, sie dienen als Verschiebeführung für den Kolben und verhindern dessen Drehbewegung, und sie gewährleisten - wie vorstehend bereits erläutert wurde - eine schnelle Austauschbarkeit des gesamten Schachtrohreinsatzes.The ventilation pipes are used to quickly reduce the pressure in the air pressure in the pressure chamber 13, they act as a tie rod between the cylinder cover 6 and assembly floor 20, they serve as a displacement guide for the piston and prevent its rotation, and they ensure - as already explained above - a quick interchangeability of the entire shaft pipe insert.

Figur 2 zeigt im lotrechten Schnitt die rechte Hälfte des Zylinderdeckels 6 mit seinem konischen Sitz 16 zur Aufnahme des Kolbenstangendeckels 12, mit einer oberen Ringnut 33 zur Aufnahme des O-Ringes 17 und mit dem ringförmigen Ausblasschlitz 19, in den eine Gewindebohrung 34 mündet, in die das obere Ende eines Entlüftungsrohres 18 eingeschraubt wird.Figure 2 shows the right half of the cylinder cover in vertical section 6 with its conical seat 16 for receiving the piston rod cover 12, with an upper annular groove 33 for receiving of the O-ring 17 and with the annular blow-out slot 19, in which opens a threaded bore 34 into which the upper end of a Vent pipe 18 is screwed.

Claims (11)

  1. Device for the selective blocking-off of traffic areas, the said device having:
    a shaft pipe (2) which can be sunk into the ground (1), is vertical in the position of use and is closed at its lower end via a base (3) and the upper end of which is closed by a cylinder cover (6) terminating flush with the ground (1) ;
    a compressed air-controlled piston (10) which is guided in a vertically displaceable manner in the shaft pipe (2) and is constructed as a piston rod flange which abuts in a sealing manner, when the piston (10) is extended, against the underside of the cylinder cover (6);
    a piston rod (11) which projects, with its upper end, through a transition aperture (14) in the cylinder cover (6), carries the piston rod flange at its lower end and is constructed as a pipe which is open downwards in relation to the pressure chamber (13) enclosed by the shaft pipe (2) and its base (3) and is closed, at its upper end, via a piston rod cover (12) which, when the piston (10) is lowered and situated in the rest position, is inserted, in a sealing manner, in a seating (16) which encloses the said transition aperture (14) in the cylinder cover (6);
    a double-acting pneumatic cylinder (9) which brings about the displacement of the piston (10) and can be activated from outside and which is connected to a reversible compressed air line (28, 29); and
    a compressed air line (27) which is connected to the pressure chamber (13) which has at least one high-speed venting valve (24, 25) which is connected to a venting line (30, 18) routed towards the outside.
  2. Device according to claim 1, characterised in that a compressed air reservoir (22), which can be connected, for the filling thereof, to a compressed air line (26), is connected to the pneumatic cylinder (9) for initiating the retracting movement of the piston (10).
  3. Device according to claim 1 or 2, characterised in that there is eccentrically disposed, in the shaft pipe (2), at least one venting pipe (18) on which the piston rod flange (10) is guided in a vertically displaceable manner and which can be connected, at its lower portion that projects into the compression chamber (13), to a compressed air feed, and terminates, with its upper end, in a blow-out slot (19) directed towards the piston rod (11) and provided in the seating (16) in the cylinder cover (6).
  4. Device according to claim 3, characterised in that a one-way valve (31, 32) is provided in the upper end of the venting pipe (18).
  5. Device according to claim 3 or 4, characterised by a number of venting pipes (18) which are fastened in the cylinder cover (6) by their upper end and jointly carry, at their lower end, a mounting base (20) on which the pneumatic cylinder (9) is fixed.
  6. Device according to claim 3, 4 or 5, characterised in that the high-speed venting valve (24) is provided in the lower portion of the venting pipe (18).
  7. Device according to one of claims 2 to 6, characterised by a valve block (25) which is disposed in the pressure chamber (13) of the shaft pipe (2), comprises a high-speed venting valve and also a 5/2-way valve, is connected to an air line (26) fed in from outside and is in communication, via connecting lines (23, 28, 29, 30), with the two chambers of the pneumatic cylinder (9), with the compressed air reservoir (22) and with the venting pipes (18).
  8. Device according to one of the preceding claims, characterised in that the shaft pipe (2) is provided, at its upper end, with a shaft pipe flange (4) which can be lowered into the ground (1) and forms, together with a flange collar (5) enclosing it, a receptacle for the cylinder cover (6).
  9. Device according to claim 8, characterised in that the cylinder cover (6) rests on a cylinder cover seal (7) and is screwed to the shaft pipe flange (4).
  10. Device according to claim 9, characterised in that the cylinder cover seal (7) also forms, at the same time, the sealing arrangement in relation to the piston rod flange (10) when the piston (10) is extended.
  11. Device according to one of the preceding claims, characterised in that an O-ring (17) is provided, for sealing purposes in relation to the piston rod cover (12), in the seating (16) in the cylinder cover (6).
EP97118799A 1996-10-30 1997-10-29 Barriers for traffic areas Expired - Lifetime EP0839961B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19643815A DE19643815C1 (en) 1996-10-30 1996-10-30 Device for selectively blocking communication surfaces
DE19643815 1996-10-30

Publications (2)

Publication Number Publication Date
EP0839961A1 EP0839961A1 (en) 1998-05-06
EP0839961B1 true EP0839961B1 (en) 2001-09-05

Family

ID=7809609

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97118799A Expired - Lifetime EP0839961B1 (en) 1996-10-30 1997-10-29 Barriers for traffic areas

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Country Link
EP (1) EP0839961B1 (en)
AT (1) ATE205271T1 (en)
DE (1) DE19643815C1 (en)
DK (1) DK0839961T3 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29901108U1 (en) 1999-01-23 1999-10-14 Schroif, Heinz, Dipl.-Designer, 52076 Aachen Retractable bollard
CH704056B1 (en) * 2010-11-05 2014-07-15 Luca Rogantini Palo hideaway for dam.
CN113216039B (en) * 2021-05-18 2023-04-14 河南章全机电设备有限公司 Hydraulic lifting column

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1289620A (en) * 1961-02-24 1962-04-06 Retractable elastic bollard
DE3141701A1 (en) * 1981-10-21 1983-05-05 Festo-Maschinenfabrik Gottlieb Stoll, 7300 Esslingen Device for reserving a parking space, having an obstruction device which can be moved in a controlled manner between an obstructing position obstructing the passage of vehicles and an open position allowing the passage of vehicles
AT384670B (en) * 1984-10-12 1987-12-28 Voest Alpine Krems TANK LOCK
FR2596782A1 (en) * 1986-04-04 1987-10-09 Verra Yvan Retractable road post equipped with control means
DE9404293U1 (en) * 1994-03-14 1994-04-28 Zach, Wolfgang, 28259 Bremen Device for the optional blocking of traffic areas
DE9410774U1 (en) * 1994-07-06 1995-11-09 H. Butting GmbH & Co KG, 29379 Wittingen Device for closing off traffic areas
FR2722216B1 (en) * 1994-07-08 1996-09-06 Bigazzi Andre DRIVE MECHANISM FOR SIGNALING ELEMENT FOR THE ROAD AND HIGHWAY NETWORK
CA2183457A1 (en) * 1994-12-30 1996-07-11 Habib Mohebbi Parking space holder
DE29604262U1 (en) * 1995-03-11 1996-05-02 Zach, Wolfgang, 28259 Bremen Shut-off device

Also Published As

Publication number Publication date
EP0839961A1 (en) 1998-05-06
DE19643815C1 (en) 1997-11-20
DK0839961T3 (en) 2001-11-19
ATE205271T1 (en) 2001-09-15

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