EP0114377A1 - Method of operating a telescopic mast, as well as a mast suitable for carrying out the method - Google Patents

Method of operating a telescopic mast, as well as a mast suitable for carrying out the method Download PDF

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Publication number
EP0114377A1
EP0114377A1 EP83112964A EP83112964A EP0114377A1 EP 0114377 A1 EP0114377 A1 EP 0114377A1 EP 83112964 A EP83112964 A EP 83112964A EP 83112964 A EP83112964 A EP 83112964A EP 0114377 A1 EP0114377 A1 EP 0114377A1
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EP
European Patent Office
Prior art keywords
mast
iii
telescopic
individual
iiic
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EP83112964A
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German (de)
French (fr)
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EP0114377B1 (en
Inventor
Wolfgang Thieme
Franz-Dieter Ing. Grad. Mangold
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BIG LIFT Maschinenbau- und Vertriebs GmbH
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BIG LIFT Maschinenbau- und Vertriebs GmbH
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Priority to AT83112964T priority Critical patent/ATE23027T1/en
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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
    • E04H12/18—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures movable or with movable sections, e.g. rotatable or telescopic
    • E04H12/182—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures movable or with movable sections, e.g. rotatable or telescopic telescopic
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/1235—Collapsible supports; Means for erecting a rigid antenna

Definitions

  • the invention relates to a method for operating a Telesköpmastes - especially an antenna mast - whose extension stroke means einströ, - is effected mender pressure air at pre-settable discharge pressure in variable in their content volume chambers, and its return stroke to the starting position or in intermediate positions by the adjustable passage cross-section with adjustable speed of the feed valve separated from the compressed air supply is possible, as well as an appropriate design of the mast for carrying out the operating method.
  • German utility model G 76 29 017 has made a pneumatic, adjustable mast known, the trains of which are made up of two telescopic tubes and are each closed at the bottom by an open piston equipped with air ducts.
  • the air ducts through the individual pistons form interchangeable orifices of various cross-sections, through which the time sequence of the lifting and lowering movements can be influenced.
  • mast steps can be extended or retracted approximately simultaneously, ie in a continuous relationship to one another, or also step by step with small, accelerated travel.
  • This document calls an inflatable, flexible, airtight material bellows, which carries a headlight platform in its end position.
  • a mast is described by US Pat. No. 2,369,534, which is pulled up in sections by two lifting columns arranged axially parallel to it on a base plate, via the hooks associated with each section, with hanging gear, by ropes guided over rollers and anchored in the end position.
  • the mast does not correspond to the concept described at the beginning and cannot be regarded as a mobile, operational antenna mast.
  • the state of the art shown here is that basically only the antenna mast designed according to the above-mentioned utility model specification G 76 29 017, and the method for mast control, which can also be found in this document, is to be subjected to a closer examination.
  • the solution to this problem according to the invention provides that the compressed air is conducted via valves in parallel or in an independent, adjustable sequence into the volum chambers consisting of at least two telescopic tubes which are guided into one another, that the piston of the follow-up chamber or the end cover of the end telescopic tube, which closes downwards, pulls apart the individual telescopic cables of the volume chambers arranged below them, that the pressure in the individual volume chambers arranged one above the other is set from bottom to top, falling in stages, so that the individual pressure stages in their minimum height are determined in each case by the residual weight of the volume chambers formed by the telescopic cables, piston rings and stop limits assigned to one another when the mast is in the extended position, and that the return stroke of the mast into the starting position or in intermediate positions takes place by opening or opening and closing the valves assigned to the individual volume chambers.
  • the setting of intermediate positions is particularly important for the uppermost volume chamber, since it facilitates alignment of the antenna.
  • the independent feeding of the compressed air into the individual volume chambers in an adjustable order ensures that the entire mast does not collapse in a sudden manner in the event of leaks in the individual telescopic cables or in the event of valve damage, but that the damage remains restricted to only one chamber and is caused by temporary additional feeding in a chamber is usually taken into account and can be repaired on a case-by-case basis. This applies in particular to bullet damage.
  • Extending the mast according to the pull-out method described reduces the demands on the guidance of the telescopic parts into one another, since any tilting effects, for example due to wind load, are more easily compensated for in train operation than in pressure operation.
  • the adjustment of the mast height in intermediate stages is possible without restriction in practice; reference is made to the preliminary remark.
  • the volume chambers be extended one after the other from bottom to top, and after the end of each individual hoist - before initiating the next hoist - the end position corresponding to the stop limits is secured by bracing to the installation level.
  • a mast training which is particularly suitable for carrying out this operating method assumes that the separate air supply and execution into or from the individual chambers takes place via valves which open via feed lines in the foot part or in the region thereof.
  • the stretchable lines can be folded pressure hoses, for example.
  • the stretchable lines required for supplying the compressed air to the volume chambers are arranged outside the volume chambers underneath.
  • the stretchable lines are coiled or zigzag-shaped hose or elastic pipes, which have the characteristic of a tension spring.
  • the stretchable lines can each be hose lines of sufficient stretching length, which can be arranged in any way within each chamber.
  • the stretchable lines are separate telescopic cables formed from pipes, each with a sufficient stretching length.
  • At least three cantilever arms are articulated on the last telescopic pull of the end volume chamber forming the tip of the mast, axially parallel to this, which, when the telescopic pull is in the extended position, about max. 90 ° to the mast axis, can be folded out due to the heavy weight, and that the articulation ends of these cantilever arms, the cable linkage at the top of the mast and the cable linkage in the foot area of the mast are connected by tensioning devices.
  • the individual telescopic cables are mutually designed, secured against rotation, and that the mast is preferably made of light metal telescopic cables in the interest of high mobility.
  • the mast 1 consists of the mast members 2.1, 2.2 and 2.3, these corresponding to the volume chambers I, II and III formed from two telescopic tubes I b / I c, II b / II c, III b / III c.
  • the telescopic tube I b is closed at the bottom by the foot part I a and its height is determined by the inward stop limit I e, the through opening corresponding to the diameter of the telescopic tube I c by the stop limit I e.
  • the piston IIa carrying the telescopic tube II b is arranged displaceably and the height of the telescopic tube II b is determined by the stop limit II e.
  • the telescopic tube II b In the telescopic tube II b, the telescopic tube II c is delimited and guided at the bottom, while the length of the telescopic tube II c is determined by the limit stop II f. The guidance of the telescopic tube II c. done by the piston ring II d.
  • the telescopic tube III b is displaceably guided via the piston III a, the length of which is determined by the limit stop II I e.
  • the telescopic tube III c is guided through the piston ring III d, this tube forming the mast tip to which a cable link 3.2 is attached.
  • the volume chamber II is fed and pulled apart by the valve I.2 and the supply line I.2.1 via the hose coil II.2 and the open passage II g arranged in the piston II a.
  • Another hose coil III.3 which is connected via the valve I.3 and via the supply line 1.3.1 of the air supply, leads through the closed, further passage II h through the volume chamber I I and through the passage III arranged in the piston III a g and causes the movement of this volume chamber III formed from III b and III c into its end position.
  • the mast links 2.1, 2.2 and 2.3 i.e. the volume chambers I, II and III are extended one after the other, whereby in the end position of each mast link 2.1, 2.2 and 2.3, before pulling out the next telescopic hoist, the end position is braced with the flat surface by means of ropes or chains using ropes or chains 2.11, 2.21 and 2.31 will.
  • an internal mast tensioning system is also provided.
  • the last telescopic tube III c in the case of this example, is connected to three fold-out cantilevers 3.1 provided with cable articulations, and between these, the cable articulation at the mast tip 3.2 and the cable articulations at the mast foot 3.3, tensioning mechanisms 3 are formed.
  • the mast 1 By means of these tensioning mechanisms 3, the mast 1, regardless of its fixation to the formation, is tensioned in itself, namely essentially axially.
  • volume chambers I, II and III forming the individual mast members 2.1, 2.2 and 2.3 can be operated independently, but as a rule the individual volume chambers are extended one after the other from bottom to top and in their respective end positions are secured to the formation by means of guy lines 2.11, 2.21 and 2.31.
  • the pressure in the individual volume chambers I, II and III is set from 'below upwards in stages, the minimum height of the pressure stages being determined in each case by the residual weight of the downstream telescopic cables.

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  • Architecture (AREA)
  • Civil Engineering (AREA)
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  • Blast Furnaces (AREA)

Abstract

1. A process of operating a telescopic mast - in particular an aerial mast - extension of which is caused by means of incoming compressed air at a pre-adjustable end pressure in plenum chambers variable in capacity, and retraction of which into the initial position or into intermediate positions is permitted by the adjustable passage cross-section at an adjustable speed of the feed valve separate from the compressed air supply, characterized by the following features : a) that the compressed air via valves (I.1, I.2, I.3) is passed in parallel or in an independent and adjustable order of sequence into the plenum chambers (I, II, III...) respectively composed of at least two nested telescopic tubes (Ib/Ic, IIb/IIc, IIIb/IIIc), b) that piston (IIa/IIIa) respectively closing at the bottom of the follow-up chamber (Ib, IIb, IIb) and the closure lid of the end telescope tube (IIIc) respectively draws apart the individual telescopic structures of the plenum chambers (I, II, III...) respectively disposed therebelow, c) that the pressure the individual superposed plenum chambers (I, II, III...) is adjusted from bottom to top - dropping stepwise, d) that the minimun level of the individual pressure steps is respectively determined by the residual weight of the plenum chambers (I, II, III...) respectively formed by the telescopic structures associated to one another, piston rings and back stops with mast (1) in the extended position, and (e) that the retraction of mast (1) into the initial position or into intermediate positions is effected by opening or by opening and closing, respectively, of the valves (I.1, I.2, I.3) associated to the individual plenum chambers (I, II, III...).

Description

Die Erfindung betrifft ein Verfahren zum Betrieb eines Telesköpmastes - insbesondere eines Antennenmastes -,dessen Ausfahrhub mittels einströ- mender Druckluft bei voreinstellbarem Enddruck in in ihrem Inhalt veränderbaren Volumenkammern bewirkt wird, und dessen Rückführhub in die Ausgangsposition oder in Zwischenpositionen durch den einstellbaren Durchgangsquerschnitt mit einstellbarer Geschwindigkeit des von der Druckluftzuführung getrennten Speiseventiles möglich ist, sowie eine zweckmäßige Ausbildung des Mastes zur Durchführung des Betriebsverfahrens.The invention relates to a method for operating a Telesköpmastes - especially an antenna mast - whose extension stroke means einströ, - is effected mender pressure air at pre-settable discharge pressure in variable in their content volume chambers, and its return stroke to the starting position or in intermediate positions by the adjustable passage cross-section with adjustable speed of the feed valve separated from the compressed air supply is possible, as well as an appropriate design of the mast for carrying out the operating method.

Durch das deutsche Gebrauchsmuster G 76 29 017 ist ein pneumatischer, verstellbarer Mast bekannt geworden, dessen aus je zwei Teleskoprohren gebildeten Züge jeweils nach unten durch einen in sich geöffneten, mit Luftführungen ausgerüsteten Kolben verschlossen sind.The German utility model G 76 29 017 has made a pneumatic, adjustable mast known, the trains of which are made up of two telescopic tubes and are each closed at the bottom by an open piston equipped with air ducts.

Die Luftführungen durch die einzelnen Kolben bilden auswechselbare Blenden verschiedenen Querschnittes, durch die der zeitliche Ablauf der Hub- und Senkbewegung beeinflußt werden kann.The air ducts through the individual pistons form interchangeable orifices of various cross-sections, through which the time sequence of the lifting and lowering movements can be influenced.

So können durch entsprechende Dimensionierung die Maststufen etwa gleichzeitig, d.h. in einem kontinuierlichen Verhältnis zueinander oder aber auch Zug um Zug bei geringen wendebeschleunigten Weg- überschreitungen aus- oder eingefahren werden.Appropriate dimensioning means that the mast steps can be extended or retracted approximately simultaneously, ie in a continuous relationship to one another, or also step by step with small, accelerated travel.

Ein anderer ebenfalls pneumatisch in seine Endlage verbringbarer Turm wird durch die US-PS 2,849,011 ausgewiesen.Another tower which can also be brought pneumatically into its end position is identified by US Pat. No. 2,849,011.

Diese Schrift nennt einen aufblasbaren, aus flexiblem, luftdichtem Material bestehenden Balg, der in seiner Endstellung eine-Scheinwerferplattform trägt.This document calls an inflatable, flexible, airtight material bellows, which carries a headlight platform in its end position.

Abgesehen von der trotz Verspannung gegebenen Labilität dieses nicht metallischen Hohlkörpers, verhindert die nicht gegebene teleskopierbare Ausbildung die sonst möglichen Einstellungen von Zwischenpositionen und ist, bereits materialbedingt, leicht verletzlich.Apart from the instability of this non-metallic hollow body despite the tension, the non-existent telescopic design prevents the otherwise possible adjustments of intermediate positions and, due to the material, is easily vulnerable.

Desweiteren wird durch die US-PS 2,369,534 ein Mast beschrieben, der abschnittsweise durch zwei achsparallel zu ihm auf einer Grundplatte angeordnete Hubsäulen über die jedem Abschnitt zugeordneten Haken mit Einhängegeschirr durch über Rollen geführte Seile hochgezogen und in der Endposition abgespannt wird.Furthermore, a mast is described by US Pat. No. 2,369,534, which is pulled up in sections by two lifting columns arranged axially parallel to it on a base plate, via the hooks associated with each section, with hanging gear, by ropes guided over rollers and anchored in the end position.

Der Mast entspricht nicht der eingangs beschriebenen Konzeption und kann nicht als mobiler, einsatzfähiger Antennenmast betrachtet werden.The mast does not correspond to the concept described at the beginning and cannot be regarded as a mobile, operational antenna mast.

Zusammengefaßt ist zu dem hier ausgewiesenen Stand der Technik festzuhalten, daß im Grunde genommen lediglich der nach der genannten Gebrauchsmusterschrift G 76 29 017 ausgebildete Antennenmast, und das ebenfalls dieser Schrift zu entnehmende Verfahren für die Maststeuerung einer näheren Betrachtung zu unterziehen ist.In summary, the state of the art shown here is that basically only the antenna mast designed according to the above-mentioned utility model specification G 76 29 017, and the method for mast control, which can also be found in this document, is to be subjected to a closer examination.

Die nach dieser Konzeption vorgesehene ununterbrochene Luftführung innerhalb des Teleskopmastes bis zur Mastspitze muß dabei als Hauptstörfaktor betrachtet werden.The uninterrupted air flow within the telescopic mast up to the top of the mast must be regarded as the main disturbing factor.

Die zwischen den einzelnen Teleskopzügen zwangsläufig sich einstellenden Undichtigkeiten sind Grund für die auch bei relativ hohem inneren Überdruck oft zu wiederholenden Luftnachspeisungen, wobei insbesondere bei wechselnden Windlasten ein vorzeitiger Verschleiß der Führungen gegeben ist.The inevitable leaks between the individual telescopic hoists are the reason for the air replenishment, which can often be repeated even at relatively high internal overpressure, with premature wear of the guides, especially with changing wind loads.

Desweiteren muß als Nachteil gewertet werden, daß auch die Einstellung von Zwischenhöhen-bedingt durch die einheitliche,durchgehende Luftsäulelabil ist , und schon die geringsten Verletzungen einer Führung, insbesondere der verbindenden Abschlußbüchse zwischen jeweils zwei Teleskoprohren, zu einem praktisch vollständigen Ausfall der Vorrichtung führen kennen.Furthermore, it must be considered a disadvantage that the setting of intermediate heights is unstable due to the uniform, continuous air column, and even the slightest injuries to a guide, especially the connecting end bushing between two telescopic tubes, lead to a practically complete failure of the device.

Die auf den luftdichten Abschluß einer Zuleitung abgestellte Aufnahme des Gesamtdruckes aus dem Mast muß ebenfalls als ein Risiko betrachtet werden.The absorption of the total pressure from the mast, which is based on the airtight closure of a supply line, must also be regarded as a risk.

Diese Sachlage berücksichtigend ist es Aufgabe dieser Erfindung, ein Betriebsverfahren für den Betrieb pneumatisch gesteuerter Teleskopmasten nach der eingangs beschriebenen Art zu nennen, das die Beanspruchungen der Lager der Teleskopzüge und des Mastes auch bei unterschiedlicher Höheneinstellung und oft wechselnder starker Windlast besser stabilisiert und die Gefährdung durch die erforderliche Aufnahme des Gesamtdruckes durch den Abschluß der Speiseleitung zumindest mindert.Taking this situation into account, it is the object of this invention to provide an operating method for the operation of pneumatically controlled telescopic masts to be named after the type described at the outset, which better stabilizes the stresses on the bearings of the telescopic hoists and the mast, even at different height settings and often changing strong wind loads, and at least reduces the risk from the required absorption of the total pressure by the closure of the feed line.

Darüberhinaus ist eine für die Durchführung des Betriebsverfahrens besonders geeignete Ausbildung eines Mastes zu beschreiben.In addition, a mast design that is particularly suitable for carrying out the operating method must be described.

Die erfindungsgemäße Lösung dieser Aufgabe sieht vor, daß die Druckluft parallel oder in unabhängiger, einstellbarer Reihenfolge in die aus jeweils mindestens zwei ineinandergeführten Teleskoprohren bestehenden Volunenkamern über Ventile geleitet wird,
daß,der jeweils nach unten abschließende Kolben der Folgekammer bzw. der Abschlußdeckel des Endteleskoprohres die einzelnen Teleskopzüge der jeweils darunter angeordneten Volumenkammern auseinanderzieht, daß der Druck.in den einzelnen übereinander angeordneten Volumenkammern von unten nach oben, in Stufen fallend, eingestellt wird, daß hierbei die einzelnen-Druckstufen in ihrer Mindesthöhe jeweils durch das Restgewicht der durch die aus den einander zugeordneten Teleskopzügen, Kolbenringen und Anschlagbegrenzungen jeweils gebildeten Volumenkammern bei ausgefahrener Stellung des Mastes bestimmt sind, und daß der Rückführhub des Mastes in die Ausgangsposition oder in Zwischenpositionen durch öffnen bzw. öffnen und Schließen der den einzelnen Volumenkammern zugeordnete Ventile erfolgt. Die Einstellung von Zwischenpositionen ist insbesondere für die oberste Volumenkammer wichtig, da sie Ausrichtung der Antenne erleichtert.The solution to this problem according to the invention provides that the compressed air is conducted via valves in parallel or in an independent, adjustable sequence into the volum chambers consisting of at least two telescopic tubes which are guided into one another,
that the piston of the follow-up chamber or the end cover of the end telescopic tube, which closes downwards, pulls apart the individual telescopic cables of the volume chambers arranged below them, that the pressure in the individual volume chambers arranged one above the other is set from bottom to top, falling in stages, so that the individual pressure stages in their minimum height are determined in each case by the residual weight of the volume chambers formed by the telescopic cables, piston rings and stop limits assigned to one another when the mast is in the extended position, and that the return stroke of the mast into the starting position or in intermediate positions takes place by opening or opening and closing the valves assigned to the individual volume chambers. The setting of intermediate positions is particularly important for the uppermost volume chamber, since it facilitates alignment of the antenna.

Durch die unabhängige Einspeisung der Druckluft in einstellbarer Reihenfolge in die einzelnen Volumenkammern wird einmal erreicht, daß bei Undichtigkeiten der einzelnen Teleskopzüge oder bei Ventilschaden nicht der ganze Mast praktisch schlagartig in sich zusammenfällt, sondern der Schaden auf nur eine Kammer beschränkt bleibt und durch vorübergehende Mehreinspeisung in eine Kammer in aller Regel berücksichtigt und fallweise durch eine Reparatur behoben werden kann. Dies gilt insbesondere auch bei Beschußschaden.The independent feeding of the compressed air into the individual volume chambers in an adjustable order ensures that the entire mast does not collapse in a sudden manner in the event of leaks in the individual telescopic cables or in the event of valve damage, but that the damage remains restricted to only one chamber and is caused by temporary additional feeding in a chamber is usually taken into account and can be repaired on a case-by-case basis. This applies in particular to bullet damage.

In diesem Zusammenhang wird - als nicht erfindungswesentlich - beispielsweise empfohlen, jedem Speiseventil einen Schnellabschlußhahn vorzuordnen, so daß ein notwendig werdender Ventilaustausch oder ein Dichtungswechsel ohne jede Schwierigkeit schnellstens behohen werden kann.In this context - as not essential to the invention - it is recommended, for example, to provide a quick shut-off valve in front of each feed valve, so that a valve replacement or a seal change that becomes necessary can be quickly avoided without any difficulty.

Das Ausfahren des Mastes nach dem beschriebenen Ausziehverfahren reduziert die Ansprüche an die Führung der Teleskopteile ineinander, da eventuelle Verkantwirkungen, beispielsweise durch Windlast, im Zugbetrieb leichter als im Druckbetrieb ausgeglichen werden.Extending the mast according to the pull-out method described reduces the demands on the guidance of the telescopic parts into one another, since any tilting effects, for example due to wind load, are more easily compensated for in train operation than in pressure operation.

Zu dem in Stufen, nach oben fallend eingestellten Druck in den einzelnen Kammern, ist im Grunde genommen nichts weiter zu bemerken, wobei selbstverständlich die Höhe der einzuhaltenden Druckstufen in aller Regel aus Sicherheitsgründen überschritten werden.Basically, there is nothing more to be said about the pressure in the individual chambers that falls in stages, whereby the level of the pressure levels to be maintained is of course generally exceeded for safety reasons.

Die Einstellung der Masthöhe in Zwischenstufen ist in praxi uneingeschränkt möglich; es wird auf die Vorbemerkung verwiesen. Im weiteren wird hierzu ergänzend vorgeschlagen, daß die Volumenkammern nacheinander von unten nach oben ausgefahren werden, und nach Beendigung jeweils eines einzelnen Hubzuges - vor Einleitung des nächsten Hubzuges - die jeweils korrespondierend zu den Anschlagbegrenzungen erreichte Endlage durch Abspannungen zur Aufstellebene gesichert sind.The adjustment of the mast height in intermediate stages is possible without restriction in practice; reference is made to the preliminary remark. In addition, it is additionally proposed that the volume chambers be extended one after the other from bottom to top, and after the end of each individual hoist - before initiating the next hoist - the end position corresponding to the stop limits is secured by bracing to the installation level.

Durch ein solches Vorgehen wird der Mast gegen die Windkrafteinflüsse gesichert und jede Volumenkammer in ihrer ausgefahrenen Stellung statisch eindeutig fixiert.In this way, the mast is secured against the effects of wind power and each volume chamber is statically clearly fixed in its extended position.

Eine zur Durchführung dieses Betriebsverfahrens besonders geeignete Mastausbildung geht davon aus, daß die separate Luftzuführung und Ausführung in die bzw. aus den einzelnen Kammern über Ventile erfolgt, die über Zuleitungen im Fußteil oder in dessen Bereich einmünden.A mast training which is particularly suitable for carrying out this operating method assumes that the separate air supply and execution into or from the individual chambers takes place via valves which open via feed lines in the foot part or in the region thereof.

Dies berücksichtigend ist vorgesehen, daß für die Zuführung der Druckluft - vom Fußteil ausgehend betrachtet - für die zweite und jede nachgeordnete, durch Teleskopzüge zusammenhängend gebildete Volumenkammer innerhalb dieser Kammer gegen die vorgeordnete(n) Volumenkammer(n) abdichtende Leitungen vorgesehen sind, deren Streckmaß zumindest dem Maß der Hubhöhe der ersten Volumenkammer bzw. der Summe der Hubhöhen der insgesamt vorgeordneten Volumenkammern entspricht.Taking this into account, it is provided that for the supply of the compressed air - viewed from the foot part - for the second and each subsequent volume chamber formed by telescopic cables connected within this chamber sealing lines are provided against the upstream volume chamber (s), the stretch dimension of which is at least corresponds to the dimension of the lifting height of the first volume chamber or the sum of the lifting heights of the overall upstream volume chambers.

Die streckbaren Leitungen können dabei zum Beispiel zusammengelegte Druckschläuche sein.The stretchable lines can be folded pressure hoses, for example.

In Abänderung der ausschließlich mastinternen Verteilung kann vorgesehen-werden, daß die für die Zuführung der Druckluft in die Volumenkammern erforderliche streckbare Leitungen außerhalb der darunterliegenden Volumenkammern angeordnet sind.In a modification of the distribution, which is exclusively internal to the mast, it can be provided that the stretchable lines required for supplying the compressed air to the volume chambers are arranged outside the volume chambers underneath.

Im weiteren ist es vorgesehen, daß die streckbaren Leitungen gewendelte oder zickzackförmige Schlauch- oder elastische Rohrleitungen sind, die etwa die Charakteristik einer Zugfeder aufweisen.Furthermore, it is provided that the stretchable lines are coiled or zigzag-shaped hose or elastic pipes, which have the characteristic of a tension spring.

Selbstverständlich können die streckbaren Leitungen Schlauchleitungen jeweils ausreichender Strecklänge sein, wobei diese innerhalb jeder Kammer auf beliebige Weise geordnet sein können.Of course, the stretchable lines can each be hose lines of sufficient stretching length, which can be arranged in any way within each chamber.

Anstelle von Schlauchleitungen kann auch vorgesehen werden, daß die streckbaren Leitungen aus Rohren gebildete, separate Teleskopzüge mit jeweils ausreichender Strecklänge sind.Instead of hose lines, it can also be provided that the stretchable lines are separate telescopic cables formed from pipes, each with a sufficient stretching length.

Als weitere Biege- bzw. Knicksicherung ist vorgesehen, daß an dem die Spitze des Mastes bildenden letzten Teleskopzug der Endvolumenkammer, achsparallel zu diesem,-mindestens drei Kragarme angelenkt sind, die bei ausgefahrener Stellung dieses Teleskopzuges etwa um max. 90° zur Mastachse gerichtet, schwergewichtsbedingt ausklappbar sind, und daß die Anlenkenden dieser Kragarme, die Seilanlenkung an der Mastspitze und die Seilanlenkung im Fußbereich des Mastes durch Spannwerke verbunden sind.As a further protection against bending or kinking, it is provided that at least three cantilever arms are articulated on the last telescopic pull of the end volume chamber forming the tip of the mast, axially parallel to this, which, when the telescopic pull is in the extended position, about max. 90 ° to the mast axis, can be folded out due to the heavy weight, and that the articulation ends of these cantilever arms, the cable linkage at the top of the mast and the cable linkage in the foot area of the mast are connected by tensioning devices.

Unabhängig davon muß erwähnt werden, daß die einzelnen Teleskopzüge zueinander, gegen Verdrehung gesichert, ausgebildet sind, und daß der Mast im Interesse einer hohen Mobilität vorzugsweise aus Leichtmetallteleskopzügen hergestellt ist.Regardless of this, it must be mentioned that the individual telescopic cables are mutually designed, secured against rotation, and that the mast is preferably made of light metal telescopic cables in the interest of high mobility.

Das erfindungsgemäße Betriebsverfahren wird anhand der beigefügten beispielsweisen systematischen Darstellung eines Antennenmastes nähererläutert.

  • Figur 1 rechts zeigt im einen ausgefahrenen, aus Halbschnitt drei, jeweils zweiteiligen zylindrischen Teleskoprohren zusammengesetzten Volumenkammern gebildeten Mast einschließlich einer zusätzlichen mastinternen Sicherung der Mastspitze zum Mastfuß.
  • Figur 1 links zeigt eben- den Mast in zusammengefahrener falls im Halbschnitt Stellung.
  • Figur 2 zeigt eine Draufsicht bzw.einen par- - tiellen Schnitt auf bzw. durch das Fußteil des Mastes mit innenliegenden Speiseleitungen für drei Volumenkammern. (durch Fig. 1)
The operating method according to the invention is explained in more detail on the basis of the exemplary systematic representation of an antenna mast attached.
  • FIG. 1 on the right shows a mast formed from an extended half-section of three volume chambers, each composed of two-part cylindrical telescopic tubes, including an additional internal securing of the mast tip to the mast base.
  • Figure 1 on the left shows the mast in the collapsed position if in half-section.
  • Figure 2 shows a plan view bzw.einen par- - tial section or by the foot of the mast with internal feed lines for three volume chambers. (through Fig. 1)

Der Mast 1 besteht aus den Mastgliedern 2.1, 2.2 und 2.3, wobei diese mit den aus jeweils zwei Teleskoprohren I b/I c, II b/II c, III b/III c gebildeten Volumenkammern I, II und III korrespondieren.The mast 1 consists of the mast members 2.1, 2.2 and 2.3, these corresponding to the volume chambers I, II and III formed from two telescopic tubes I b / I c, II b / II c, III b / III c.

Das Teleskoprohr I b wird nach unten durch das Fußteil I a abgeschlossen und in seiner Höhe durch die nach innen gerichtete Anschlagbegrenzung I e bestimmt, wobei die Durchgangsöffnung durch die Anschlagbegrenzung I e mit dem Durchmesser des Teleskoprohres I c korrespondiert.The telescopic tube I b is closed at the bottom by the foot part I a and its height is determined by the inward stop limit I e, the through opening corresponding to the diameter of the telescopic tube I c by the stop limit I e.

Die Durchführungen aus den Folge-Anschlagbegrenzungen I f, II e und II f sind entsprechend ausgebildet.The bushings from the subsequent limit stops I f, II e and II f are designed accordingly.

In dem Teleskoprohr I c ist der das Teleskoprohr II b tragende Kolben IIa verschiebbar angeordnet und das Teleskoprohr II b nach oben durch die Anschlagbegrenzung II e höhenbestimmt.In the telescopic tube I c, the piston IIa carrying the telescopic tube II b is arranged displaceably and the height of the telescopic tube II b is determined by the stop limit II e.

In dem Teleskoprohr II b ist das Teleskoprohr II c nach unten abgegrenzt und geführt, während die Länge des Teleskoprohres II c durch die Anschlagbegrenzung II f bestimmt ist. Die Führung des Teleskoprohres II c . erfolgt durch den Kolbenring II d.In the telescopic tube II b, the telescopic tube II c is delimited and guided at the bottom, while the length of the telescopic tube II c is determined by the limit stop II f. The guidance of the telescopic tube II c. done by the piston ring II d.

Im Teles.koprohr II c wird über den Kolben III a das Teleskoprohr III b verschiebbar geführt, wobei dessen Länge durch die Anschlagbegrenzung III e bestimmt ist.In the telescopic tube II c, the telescopic tube III b is displaceably guided via the piston III a, the length of which is determined by the limit stop II I e.

Im Teleskoprohr III b wird das Teleskoprohr III c durch den Kolbenring III d geführt, wobei dieses Rohr die Mastspitze bildet, an der eine Seilanlenkung 3.2 befestigt ist.In the telescopic tube III b, the telescopic tube III c is guided through the piston ring III d, this tube forming the mast tip to which a cable link 3.2 is attached.

Die Luftzuführung in die drei Mastglieder 2.1, 2.2 und 2.3, die ihrerseits die Volumenkammern I, II und III bilden, erfolgt über die Ventile I.1, I.2 und I.3 und über die im Fußteil I a eingebrachten Zuleitungen I.1.1, 1.2.1 und 1.3.1 zu den einzelnen Volumenkammern, wobei durch Ventil I.1 und Zuleitung 1.1.1 die Volumenkammer I gespeist wird und diese auszieht.The air supply to the three mast sections 2.1, 2.2 and 2.3, in turn make up the volume chambers I, II and III, takes place via the valves I.1, I.2 and I.3 and the introduced in the foot part I a feed lines I.1.1, 1 second 1 and 1. 3 . 1 to the individual volume chambers, the volume chamber I being fed through valve I.1 and supply line 1.1.1 and pulling it out.

Durch das Ventil I.2 und die Zuleitung I.2.1 wird über die Schlauchwendel II.2 und den im Kolben II a angeordneten offenen Durchgang II g die Volumenkammer II gespeist und auseinandergezogen.The volume chamber II is fed and pulled apart by the valve I.2 and the supply line I.2.1 via the hose coil II.2 and the open passage II g arranged in the piston II a.

Eine weitere Schlauchwendel III.3, die über das Ventil I.3 und über die Zuleitung 1.3.1 der Luftzuführung verbunden ist, führt über den geschlossenen, weiterführenden Durchgang II h durch die Volumenkammer II und durch den im Kolben III a angeordneten Durchgang III g und veranlaßt die Verbringung dieses aus III b und III c gebildeten Volumenkammer III in seine Endstellung.Another hose coil III.3, which is connected via the valve I.3 and via the supply line 1.3.1 of the air supply, leads through the closed, further passage II h through the volume chamber I I and through the passage III arranged in the piston III a g and causes the movement of this volume chamber III formed from III b and III c into its end position.

Die Mastglieder 2.1, 2.2 und 2.3, d.h. die Volumenkammern I, II und III werden nacheinander ausgefahren, wobei jeweils in der Endstellung jedes Mastgliedes 2.1, 2.2 und 2.3, vor dem Ausziehen des nächsten Teleskopzuges, die Endstellung über die angelenkten Abspannungen 2.11, 2.21 und 2.31 durch Seile oder Ketten mit dem Planum verspannt werden.The mast links 2.1, 2.2 and 2.3, i.e. the volume chambers I, II and III are extended one after the other, whereby in the end position of each mast link 2.1, 2.2 and 2.3, before pulling out the next telescopic hoist, the end position is braced with the flat surface by means of ropes or chains using ropes or chains 2.11, 2.21 and 2.31 will.

Unabhängig von diesem Sicherungssystem ist noch ein mastinternes Spannsystem vorgesehen.Regardless of this security system, an internal mast tensioning system is also provided.

Hierbei sind dem letzten Teleskoprohr III c, im Falle dieses Beispieles, drei ausklappbare mit Seilanlenkungen versehene Kragarme 3.1 verbunden und zwischen diesen, der Seilanlenkung an der Mastspitze 3.2 und den Seilanlenkungen am Mastfuß 3.3 Spannwerke 3 gebildet.In this case, the last telescopic tube III c, in the case of this example, is connected to three fold-out cantilevers 3.1 provided with cable articulations, and between these, the cable articulation at the mast tip 3.2 and the cable articulations at the mast foot 3.3, tensioning mechanisms 3 are formed.

Durch diese Spannwerke 3 wird der Mast 1,unabhängig von seiner Fixierung zum Planum, in sich selbst, und zwar im wesentlichen axial gerichtet, gespannt.By means of these tensioning mechanisms 3, the mast 1, regardless of its fixation to the formation, is tensioned in itself, namely essentially axially.

Zur Funktion ist noch zu bemerken, daß zwar die die einzelnen Mastglieder 2.1, 2.2 und 2.3 bildenden Volumenkammern I, II und III unabhängig betätigt werden können, wobei jedoch in aller Regel die einzelnen Volumenkammern nacheinander von unten nach oben ausgefahren werden und in ihrer jeweiligen Endstellung durch die Abspannungen 2.11, 2.21 und 2.31 zum Planum gesichert werden.As far as the function is concerned, it should also be noted that the volume chambers I, II and III forming the individual mast members 2.1, 2.2 and 2.3 can be operated independently, but as a rule the individual volume chambers are extended one after the other from bottom to top and in their respective end positions are secured to the formation by means of guy lines 2.11, 2.21 and 2.31.

Der Druck in den einzelnen Volumenkammern I, II und III ist von'unten nach oben in Stufen fallend eingestellt, wobei die Mindesthöhe der Druckstufen jeweils durch das Restgewicht der nachgeordneten Teleskopzüge bestimmt ist.The pressure in the individual volume chambers I, II and III is set from 'below upwards in stages, the minimum height of the pressure stages being determined in each case by the residual weight of the downstream telescopic cables.

Claims (10)

1. Verfahren zum Betrieb eines Teleskopmastes - insbesondere eines Antennenmastes - dessen Ausfahrhub mittels einströmender Druckluft bei voreinstellbarem Enddruck in in ihrem Inhalt veränderbaren Volumenkammern bewirkt wird, und dessen Rückführhub in die Ausgangsposition oder in Zwischenpositionen durch den einstellbaren Durchgangsquerschnitt mit einstellbarer Geschwindigkeit des von der Druckluftzuführung getrennten Speiseventiles möglich ist, gekennzeichnet durch folgende Merkmale: a) d a ß die Druckluft parallel oder in unabhängiger, einstellbarer Reihenfolge in die aus jeweils mindestens zwei ineinandergeführten Teleskoprohren (Ib/Ic, IIb/IIc, IIIb/IIIc) bestehenden Volumenkammern (I,II,III) über Ventile (I.1, I.2, 1.3) geleitet wird, b) d a ß der jeweils nach unten abschließende Kolben (IIa/IIIa) der Folgekammer (Ib,IIb,IIIb) bzw. der Abschlußdeckel des Endteleskoprohres (IIIc) die einzelnen Teleskopzüge der jeweils darunter angeordneten Volumenkammern (I,II,III...) auseinanderzieht, c) d a ß der Druck in den einzelnen übereinander angeordneten Volumenkammern (I,II,III...) von unten nach oben, in Stufen fallend, eingestellt wird, d) d a ß hierbei die einzelnen Druckstufen in ihrer Mindesthöhe jeweils durch das Restgewicht der durch die aus den einander zugeordneten Teleskopzügen , Kolbenringen und Anschlagbegrenzungen jeweils gebildeten Volumenkammern (I,II,III...) bei ausgefahrener Stellung des Mastes (1) bestimmt sind, und e) d a ß der Rückführhub des Mastes (1) in die Ausgangsposition oder in Zwischenpositionen dadurch Öffnen bzw. öffnen und Schließen der den einzelnen Volumenkammern (I,II,III...) zugeordneten Ventile (I.1, 1.2., 1.3) erfolgt. 1.Procedure for operating a telescopic mast - in particular an antenna mast - the extension stroke of which is effected by inflowing compressed air at a presettable final pressure in volume chambers whose content can be changed, and the return stroke of which to the starting position or in intermediate positions due to the adjustable passage cross-section with adjustable speed of the one separated from the compressed air supply Feed valve is possible, characterized by the following features: a) that the compressed air in parallel or in an independent, adjustable sequence into the volume chambers (I, II, III) consisting of at least two telescoping tubes (Ib / Ic, IIb / IIc, IIIb / IIIc) via valves (I.1, I.2, 1.3) is directed, b) that the downward-closing piston (IIa / IIIa) of the following chamber (Ib, IIb, IIIb) or the end cover of the end telescopic tube (IIIc) contains the individual telescopic cables of the volume chambers (I, II, III ...) ) pulls apart, c) that the pressure in the individual volume chambers (I, II, III ...) arranged one above the other is adjusted from bottom to top, falling in stages, d) since the individual pressure stages are determined in their minimum height by the residual weight of the volume chambers (I, II, III ...) formed by the mutually assigned telescopic cables, piston rings and limit stops when the mast (1) is in the extended position , and e) that the return stroke of the mast (1) into the starting position or in intermediate positions thereby opening or opening and closing the valves (I.1, 1.2., 1.3) assigned to the individual volume chambers (I, II, III ...) he follows. 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, d a ß die nacheinander von unten nach oben aus- gefahrenen Volumenkammern (I,II,III...) nach Beendigung jeweils eines einzelnen Hubzuges - vor Einleitung des nächsten Hubzuges - die jeweils korrespondierend zu den Anschlagbegrenzungen (If, IIf, IIIe) erreichte Endlage durch Abspannungen (2.11, 2.21, 2.31) zur Aufstellebene gesichert sind.2. The method according to claim 1, characterized in that ß the successively extended from bottom to top volume chambers (I, II, III ...) after completion of a single stroke - before initiation of the next stroke - each corresponding to the Limit stops (If, IIf, IIIe) reached the end position are secured by bracing (2.11, 2.21, 2.31) to the installation level. 3. Ausbildung des Mastes zur Durchführung des Be-triebsverfahrens nach Anspruch 1, dadurch gekennzeichnet,
d a ß für die Zuführung der Druckluft - vom Fußteil (Ia) ausgehend betrachtet - für die zweite und jede nachgeordnete , durch Teleskopzüge (Ib/Ic, IIb/IIc, IIIb/IIIc..) zus ammenhängend gebildete Volumenkammer (I,II,III...) innerhalb dieser Kammern gegen die vorgeordnete(n) Volumenkammer(n) abdichtende Leitungen (II.2, III.3) vorgesehen sind, deren Streckmaß zumindest dem Maß der Hubhöhe der ersten Volumenkammer bzw. der Summe der Hubhöhen der insgesamt vorgeordneten Volumenkammern entspricht.3. Training of the mast for carrying out the B e-operating method according to claim 1, characterized in that
da ß for the supply of compressed air - viewed from the foot part (Ia) - for the second and each subordinate volume chamber (I, II, III.) formed by telescopic cables (Ib / Ic, IIb / IIc, IIIb / IIIc ..) ...) lines (II.2, III.3) sealing against the upstream volume chamber (s) are provided within these chambers, the stretch dimension of which is at least the dimension of the lifting height of the first volume chamber or the sum of the lifting heights of the overall upstream Volume chambers corresponds. 4. Ausbildung nach Anspruch 3, dadurch gekennzeichnet,
d a ß die für die Zuführung der Druckluft zu den Volumenkammern erforderlichen streckbaren Leitungen außerhalb der darunterliegenden Volumenkammern angeordnet sind.4. Training according to claim 3, characterized in
da ß the stretchable lines required for supplying the compressed air to the volume chambers are arranged outside the volume chambers underneath. 5. Ausbildung nach Anspruch 3 und 4, dadurch gekennzeichnet,
d a ß die streckbaren Leitungen (II.2, III.3...) gewendelte oder zickzackförmige Schlauch- oder elastische Rohrleitungen sind, die etwa die Charakteristik einer Zugfeder aufweisen.5. Training according to claim 3 and 4, characterized in
that the stretchable lines (II.2, III.3 ...) are coiled or zigzag-shaped hose or elastic pipes, which have the characteristics of a tension spring. 6. Ausbildung nach Anspruch 3 und 4, dadurch gekennzeichnet,
d a ß die streckbaren Leitungen (II.2,III.3) Schlauchleitungen mit jeweils ausreichender Strecklänge sind.6. Training according to claim 3 and 4, characterized in
that the stretchable lines (II.2, III.3) are hose lines with sufficient stretching length. 7. Ausbildung nach Anspruch 3 und 4, dadurch gekennzeichnet,
d a ß die streckbaren Leitungen (II.2, III.3) aus Rohren gebildete,separate Teleskopzüge mit jeweils ausreichender Strecklänge sind.7. Training according to claim 3 and 4, characterized in
that the stretchable lines (II.2, III.3) are formed from pipes, separate telescopic cables, each with sufficient stretching length. 8. Ausbildung des Mastes zur Durchführung des Betriebsverfahrens nach Anspruch 1 und 2, dadurch gekennzeichnet,
d a ß an dem die Spitze des Mastes (1) bildenden letzten Teleskopzug (IIIb, IIIc) der Endvolumenkammer, achsparallel zu diesem, mindestens drei Kragarme (3,1) angelenkt sind, die bei aus gefahrener Stellung dieses Teleskopzuges (IIIb, IIIc) etwa um max. 90° zur Mastachse gerichtet, schwergewichtsbedingt ausklappbar sind, und
d a B die Anlenkenden dieser Kragarme (3.1), die Seilanlenkung an der Mastspitze (3.2) und die Seilanlenkungen (3.3) im Fußbereich des Mastes (1) durch Spannwerke (3) verbunden sind.8. Training of the mast for performing the operating method according to claim 1 and 2, characterized in
Since ß at the top of the mast (1) forming the last telescopic cable (IIIb, IIIc) of the final volume chamber, axially parallel to this, at least three cantilever arms (3,1) are articulated, which when the telescopic cable (IIIb, IIIc) is in the extended position by max. 90 ° to the mast axis, can be folded out due to heavy weight, and
since B the articulation ends of these cantilever arms (3.1), the rope linkage at the mast tip (3.2) and the rope linkages (3.3) in the foot area of the mast (1) are connected by tensioning mechanisms (3). 9. Ausbildung nach Anspruch 3, dadurch gekennzeichnet,
d a ß die einzelnen Teleskopzüge (Ib/Ic, IIb/IIc, IIIb/IIIc) zueinander, gegen Verdrehung gesichert, ausgebildet sind.9. Training according to claim 3, characterized in
da ß the individual telescopic cables (Ib / Ic, IIb / IIc, IIIb / IIIc) to each other, secured against rotation, are formed. 10. Ausbildung nach Anspruch 3, dadurch gekennzeichnet,
d a ß die Teleskopzüge (Ib/Ic, IIb/IIc, IIIb/IIIc) aus Metall, vorzugsweise aus Leichtmetall hergestellt sind.10. Training according to claim 3, characterized in
that the telescopic cables (Ib / Ic, IIb / IIc, IIIb / IIIc) are made of metal, preferably of light metal.
EP83112964A 1982-12-28 1983-12-22 Method of operating a telescopic mast, as well as a mast suitable for carrying out the method Expired EP0114377B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83112964T ATE23027T1 (en) 1982-12-28 1983-12-22 METHOD OF OPERATING A TELESCOPIC MAST AND A MAST SUITABLE FOR EXECUTING SUCH METHOD.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3248288 1982-12-28
DE3248288 1982-12-28

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EP0114377A1 true EP0114377A1 (en) 1984-08-01
EP0114377B1 EP0114377B1 (en) 1986-10-22

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AT (1) ATE23027T1 (en)
DE (1) DE3367080D1 (en)

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Publication number Priority date Publication date Assignee Title
GB2406862A (en) * 2003-10-09 2005-04-13 Janile Ltd Telescopically extendible mast
WO2008125110A2 (en) * 2007-04-16 2008-10-23 Falck Schmidt Defence Systems A/S Telescoping mast

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CN105889167A (en) * 2014-12-12 2016-08-24 唐维 Self-locking type multi-stage hydraulic oil cylinder

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US2849011A (en) * 1957-09-26 1958-08-26 Birdair Structures Air inflated tower or the like
US2872904A (en) * 1953-05-18 1959-02-10 Beemt Jan H Van Den Telescoping mast
GB1356517A (en) * 1971-09-07 1974-06-12 Ruston Bucyrus Ltd Light weight telescoping boom
DE7629017U1 (en) * 1976-09-17 1977-04-07 Rupprecht, Walter, 6464 Linsengericht TELESCOPIC ANTENNA MAST
DE2626606A1 (en) * 1976-06-14 1977-12-22 Karl Zaengl Pressure cylinder with double action for tyre presses - with its piston acting as cylinder for second piston

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US2369534A (en) * 1943-05-29 1945-02-13 Cohen Harold Tower or mast
US2872904A (en) * 1953-05-18 1959-02-10 Beemt Jan H Van Den Telescoping mast
US2849011A (en) * 1957-09-26 1958-08-26 Birdair Structures Air inflated tower or the like
GB1356517A (en) * 1971-09-07 1974-06-12 Ruston Bucyrus Ltd Light weight telescoping boom
DE2626606A1 (en) * 1976-06-14 1977-12-22 Karl Zaengl Pressure cylinder with double action for tyre presses - with its piston acting as cylinder for second piston
DE7629017U1 (en) * 1976-09-17 1977-04-07 Rupprecht, Walter, 6464 Linsengericht TELESCOPIC ANTENNA MAST

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2406862A (en) * 2003-10-09 2005-04-13 Janile Ltd Telescopically extendible mast
GB2406862B (en) * 2003-10-09 2007-08-01 Janile Ltd Extendible mast
WO2008125110A2 (en) * 2007-04-16 2008-10-23 Falck Schmidt Defence Systems A/S Telescoping mast
WO2008125110A3 (en) * 2007-04-16 2009-01-29 Falck Schmidt Defence Systems Telescoping mast
US20100146873A1 (en) * 2007-04-16 2010-06-17 Falck Schmidt Defence Systems A/S Telescoping mast
US8661744B2 (en) 2007-04-16 2014-03-04 Falck Schmidt Defence Systems A/S Telescoping mast
AU2008238435B2 (en) * 2007-04-16 2014-05-29 Drs Sustainment Systems, Inc. Telescoping mast

Also Published As

Publication number Publication date
DE3367080D1 (en) 1986-11-27
EP0114377B1 (en) 1986-10-22
ATE23027T1 (en) 1986-11-15

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