EP0205955B1 - Tipping mast - Google Patents

Tipping mast Download PDF

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Publication number
EP0205955B1
EP0205955B1 EP86107057A EP86107057A EP0205955B1 EP 0205955 B1 EP0205955 B1 EP 0205955B1 EP 86107057 A EP86107057 A EP 86107057A EP 86107057 A EP86107057 A EP 86107057A EP 0205955 B1 EP0205955 B1 EP 0205955B1
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EP
European Patent Office
Prior art keywords
pole
tiltable
shoe
locking
pole shoe
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
EP86107057A
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German (de)
French (fr)
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EP0205955A2 (en
EP0205955A3 (en
Inventor
Rudolf Thomas
Dietmar Tietz
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Rudolf Thomas Stahlbau & Co KG GmbH
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Rudolf Thomas Stahlbau & Co KG GmbH
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Priority to AT86107057T priority Critical patent/ATE55168T1/en
Publication of EP0205955A2 publication Critical patent/EP0205955A2/en
Publication of EP0205955A3 publication Critical patent/EP0205955A3/en
Application granted granted Critical
Publication of EP0205955B1 publication Critical patent/EP0205955B1/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
    • E04H12/187—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures movable or with movable sections, e.g. rotatable or telescopic with hinged sections

Definitions

  • the invention relates to a tilting mast with a stationary mountable mast shoe and a tiltable mast mounted thereon with a lower mast foot part and an upper mast tube part, and a double-acting hydraulic piston-cylinder unit, which on the one hand on the mast shoe below the tilting bearing point and on the other hand off-center on the tilting mast, in particular on the mast tube part of which is articulated above the tilting bearing point, the mast shoe being a tube or box body which is essentially closed in cross section and the mast base part is a tube or box body which is open on one side in cross section, which encloses the mast shoe in an upright position and a hand hole which can be closed with a detachable cover has, as well as with a locking mechanism for locking the mast shoe against the mast foot part when the mast is erected.
  • Such constructions are intended for tipping masts which, because of their size, cannot be put down or set up manually.
  • such constructions are required for masts that carry a top load, for example lighting devices that also need regular maintenance.
  • an auxiliary piston-cylinder unit must therefore be provided, which is used to tip over the post upper part when it is raised by the pressurized main piston-cylinder unit or an additional holding device for the mast in the raised position Position in the slot be present, after which the piston-cylinder unit can be relieved of pressure.
  • the mechanical holding device would have to be very large, since it has to absorb the entire weight of the mast. For operation, it also applies that there is a possibility of errors if the correct sequence of control, reversing and locking processes is not observed. Falling back of the upper post part in the elongated hole guide in the event of incorrect control or incorrect operation can lead to damage to the mast or to the lighting device carried by it.
  • tilting mast constructions which can be erected and put down by hand, for example by a rope. In both, locking elements can be unlocked against a spring force by hand with the normal hand force.
  • the present invention has for its object to provide a tilting mast structure that is simplified both in structure and in the control of the actuators, in particular the initiation of the tilting process should be facilitated without the risk that this is done unauthorized or unintentional.
  • the locking mechanism consists of a locking element which can be unlocked against spring force and which is attached in the mast shoe and a latching means which is attached to the mast foot part, and that the locking element is adjustable via the piston-cylinder unit which can be linked to the end of the pivotable actuating lever which is led out of the mast shoe is.
  • the locking mechanism consists of a locking element that can be unlocked against spring force, is attached in the mast shoe and a latching means attached to the mast foot part, and the locking element has a locking element that protrudes from the open hand hole of the mast shoe, with the locking element or with one connected to it Lever linkage temporarily connectable extension rod is unlockable.
  • the tilting process can be initiated by pressurizing the piston-cylinder unit in the sense of shortening after the locking device securely accommodated inside the mast shoe has been released.
  • the mast After releasing the locking device, the mast is in an almost unstable equilibrium, so that an auxiliary piston-cylinder unit or the like can advantageously be dispensed with. Protection against unauthorized access is ensured by the fact that the locking mechanism is located inside the mast shoe designed as a box body and cannot be unlocked manually from the outside.
  • the locking element is designed as a displaceable bolt, displaceable locking bolt, pivotable pawl or rotatable cam and the latching means as an eyelet, a tab provided with a hole, detent or recess.
  • a securing element accessible via the hand hole for securing the locking elements can be attached inside the mast shoe.
  • a locking element is arranged on the releasable cover for the hand hole in the mast shoe, and part of the locking mechanism, in particular the extendable hand lever in the locking position is blocked by the locking element when the lid is closed.
  • the locking element ensures that the lid can only be closed in the locked position and that the lid is prevented from closing when the mechanism is unlocked. The respective operator who does not leave the tilting mast without closing the cover is thus forced to operate the locking device properly in the sense of locking.
  • the cover can furthermore provide access to electrical installations of a light mast arranged inside the mast shoe, so that a dual function is thereby fulfilled.
  • the lower end of the piston-cylinder unit can be fastened in a hole in the eye of the movable actuating lever by means of a plug-in connection, that in the locking position the eye hole at the lever end above a lower fixed articulation point for the piston-cylinder unit and that in the unlocked position the lever end can be fixed together with the lower end of the piston-cylinder unit at the fixed lower articulation point by means of a plug connection through congruent eye holes.
  • the piston-cylinder unit For actuation, the piston-cylinder unit is acted on as an extension and the locking mechanism is thereby released.
  • the piston-cylinder unit which is supported against the floor or the foundation, prevents the mast from overturning.
  • the lower articulation point of the piston-cylinder unit is now also fixed at the fixed lower articulation point, after which the piston-cylinder unit is reversed and pressurized to shorten it.
  • the mast is tipped over and its controlled folding is carried out. Since unlocking is only possible with the aid of the piston-cylinder unit and is locked again immediately when reversing without establishing the additional plug-in connection, in the embodiment described here, the mast can only be tilted when the piston-cylinder unit is fitted as specified. This provides increased security against any incorrect operation.
  • the locking device can be characterized in that when the mast is erected, the eyelet or tab on the mast foot part passes through an opening in the mast shoe into the interior of the mast shoe.
  • This configuration is particularly advantageous when the locking device, as described above, comprises a simple hand lever and a cover provided with a locking element.
  • a combination with a lever end protruding from the mast shoe, as also described above, is also possible via a linkage, the piston-cylinder unit being articulated at the lever end to unlock the mast.
  • the locking device can be characterized in that - when the mast is erected, locking bolts horizontally arranged perpendicular to the actuating lever pass through elongated holes in the lower part of the mast shoe and for locking the erected mast with its ends in recesses in the engages lower lateral edges of the mast foot part.
  • the actuating lever can be designed as a one-armed lever, which simplifies the construction, since intermediate links and transmission links can be completely eliminated.
  • the actuating lever should not be able to be actuated manually from the outside by the selected spring force or the selected transmission ratio
  • the securing element is a securing pin via which the bolt, a lever connected to the bolt element or a the spring leading and from this protruding rod can be fixed. In conjunction with a lockable cover in the mast shoe, this further increases the security against unauthorized unlocking of the mast.
  • the upper articulation point for the piston-cylinder unit is preferably arranged off-center on the mast tube part vertically above the lower articulation point, the corresponding bearing surface being able to be provided on a collar which is welded like a pipe clamp or on a bolt inserted through the tube.
  • the piston-cylinder unit is designed as a transportable unit which is attached to the tilting mast only when required and via an independent pressure generation system, in particular with a hand pump, and via its own control systems for reversing between extension and shortening, and in particular is provided with throttle elements to control the tilting speed of the mast.
  • the tilting mast is erected and locked in the left half of the picture, unlocked in each case in the right half of the picture and shown laid horizontally.
  • the construction has a box-shaped mast shoe 1 with a generally square cross section, the base plate 24 of which can be screwed onto a foundation in a stationary manner.
  • a tilting mast 2 is mounted in a tilting bearing point 6, which comprises a mast foot part 3 and a mast tube part 4.
  • the mast foot part 3 of the tilting mast 2 encompasses the mast shoe 1 in an upright position, its basic shape being a box open at the bottom and on one side.
  • the bevel 25 on the mast shoe 1 enables the pivoting movement of the cover plate 26 of the mast foot part 3 about the tilting bearing point 6.
  • the upper mast tube part 4 of generally round cross section is placed on the cover plate 26, with gusset plates 27 being provided for reinforcement.
  • an eye bearing block 15 is provided, to which a hydraulic piston-cylinder unit 5 can be linked with the lower end.
  • the upper end of the piston-cylinder unit 5 can be articulated in a bearing block 29 which is formed at the end of a bolt or a clamp band 23 in the area of the mast tube part 4.
  • the piston-cylinder unit 5, the control means and pressure generating means are not shown, is reversible and can be lengthened and shortened under load.
  • a vertically protruding tab 9 with a hole is provided in the interior of the mast foot part 3, which, when the mast is erected, passes through an opening 10 in the mast shoe 1.
  • a bolt 8 is provided in the mast shoe 1, which is vertically displaceable against the force of a spring 28. The latch 8 can be inserted into the tab 9 and locks the tilting mast 2 by resting on the inner wall of the mast shoe 1.
  • a two-armed hand lever 14 is arranged on the bolt 8, which is blocked in the locked position by a locking element 13 inside a removable cover 12.
  • the hand lever 14 can be pressed down in particular by means of an extension rod 20, as a result of which the bolt 8 is pulled out of the tab 9.
  • the extension rod 20 can be fixed on the mast shoe 1 by means of a plug-in pin connection.
  • a one-armed lever 30 is arranged on the bolt 8, which can be adjusted via a handlebar 31 by the operating lever 32.
  • the two-armed actuating lever 32 mounted on an axis of rotation 22, the lever end 17 of which passes through an opening 16 in the mast shoe 1, has an outside eye hole 19 to which the piston-cylinder unit 5 can be articulated.
  • the lever 32 is moved clockwise, whereby the mast is unlocked.
  • the lower articulation point of the piston-cylinder unit 5 comes into congruence with the eye hole 18 of the eye bearing block 15 fixedly arranged on the base plate 24.
  • the locking mechanism 7 By establishing a plug-in pin connection 21 between the lower articulation point of the piston-cylinder unit 5 , Lever end 17 and eye bracket 15, the locking mechanism 7 is simultaneously held in its unlocked position and the piston-cylinder unit 5 is set such that pressurization in the sense of shortening causes the tilting mast 2 to be flipped over.
  • a securing bolt is provided on part of the bolt 8 for securing the locking mechanism 7.
  • an operating lever 36 is mounted inside the mast shoe 1 on an axis of rotation 35 and passes with the lever end 17 through an opening 16 in the mast shoe 1.
  • the cranked lever end 17 has an upper eye hole 19 for articulating the lower end of the piston-cylinder unit 5 and a lower eye hole 37 that is located in the locking position above the eye hole 18 in the eye bracket 15.
  • a vertically arranged, horizontally arranged locking pin 38 is fastened to the actuating lever 36 and passes through elongated holes 39 in the mast shoe 1 on both sides. This locking pin 38 engages in the locking position in recesses 40 on the lower edge of the mast foot part 3, which is at a distance from the Bottom plate 24 extends, and in this way locks the mast in an upright position.
  • a rod 41 is articulated on the actuating lever 36, via which the force of a spring 28 is transmitted to the actuating lever 36 in the sense of holding it up.
  • the rod 41 can be locked with a securing bolt 42. After the rod 41 has been unlocked, the actuating lever 36 can be pressed downward against the force of the spring 28 by pressurizing the piston-cylinder unit 5, as a result of which the locking pin 38 comes out of the region of the recess 40, as a result of which the tilting mast 2 is unlocked.
  • the tab g can be replaced by a pivotable latch. This is then pivotally arranged on the mast foot part 3 and loaded by a spring. When erecting the mast, the pawl is moved through the opening 10 and rests with a hook part on the inner wall of the mast shoe part 1, whereby the mast shoe and mast foot part are locked together.
  • a rotatable cam could be provided which, after being rotated, creates a positive connection between the mast foot part 3 and the mast shoe 1.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Forklifts And Lifting Vehicles (AREA)
  • Earth Drilling (AREA)
  • Walking Sticks, Umbrellas, And Fans (AREA)
  • Road Signs Or Road Markings (AREA)

Abstract

1. A tiltable pole comprising a pole shoe (1) attachable so as to be stationary, and a tiltable pole (2) supported thereon so as to be tiltable and having a lower pole base part (3) and an upper tubular pole part (4), as well as comprising a double-acting hydraulic piston/cylinder unit (5) articulated at the pole shoe (1) below the pivot bearing point (6) on the one hand and eccentrically at the tiltable pole (2) on the other hand, especially at its tubular pole part (4) above the pivot bearing point (6), with the pole shoe (1) being essentially a tube or box member with a closed cross-section and with the pole base part (3) being a tube or box member whose cross-section is open on one side and which, in the upright position, encloses the pole shoe (1) and has been provided with a handhole (11) closable with a removable cover (12), as well as comprising a locking mechanism (7) for locking the pole shoe (1) relative to the pole base part (3) when the pole is in the upright condition, characterised in that the locking mechanism consists of a locking element (8, 38) which is unlockable against the force of a spring and attached in the pole shoe (1) and of engaging means (9, 40) attached to the pole base part (3) and that the locking element (8, 38) is adjustable via the piston/cylinder unit (5) articulatable at the end (17) of the pivotable operating lever (28, 36) projecting from the pole shoe (1).

Description

Die Erfindung betrifft einen Kippmast mit einem ortsfest montierbaren Mastschuh und einem daran kippbar gelagerten Kippmast mit einem unteren Mastfußteil und einem oberen Mastrohrteil, sowie einer doppeltwirkenden hydraulischen Kolben-Zylinder-Einheit, die einerseits am Mastschuh unterhalb des Kipplagerpunktes und andererseits außermittig am Kippmast, insbesondere an dessen Mastrohrteil oberhalb des Kipplagerpunktes anlenkbar ist, wobei der Mastschuh ein im wesentlichen im Querschnitt geschlossener Rohr oder Kastenkörper ist und das Mastfußteil ein im Querschnitt einseitig offener Rohr- oder Kastenkörper ist, der in aufgerichteter Stellung den Mastschuh umschließt und ein mit einem lösbaren Deckel schließbares Handloch aufweist, sowie mit einem Verriegelungsmechanismus zur Verriegelung des Mastschuhs gegenüber dem Mastfußteil bei aufgerichtetem Mast.The invention relates to a tilting mast with a stationary mountable mast shoe and a tiltable mast mounted thereon with a lower mast foot part and an upper mast tube part, and a double-acting hydraulic piston-cylinder unit, which on the one hand on the mast shoe below the tilting bearing point and on the other hand off-center on the tilting mast, in particular on the mast tube part of which is articulated above the tilting bearing point, the mast shoe being a tube or box body which is essentially closed in cross section and the mast base part is a tube or box body which is open on one side in cross section, which encloses the mast shoe in an upright position and a hand hole which can be closed with a detachable cover has, as well as with a locking mechanism for locking the mast shoe against the mast foot part when the mast is erected.

Derartige Konstruktionen sind bei Kippmasten yorgesehen, die wegen ihrer Größe nicht manuell niedergelegt oder aufgestellt werden können. Insbesondere sind derartige Konstruktionen bei Masten erforderlich, die eine Toplast tragen, also beispielsweise Beleuchtungseinrichtungen, die zudem regelmäßig gewartet werden müssen.Such constructions are intended for tipping masts which, because of their size, cannot be put down or set up manually. In particular, such constructions are required for masts that carry a top load, for example lighting devices that also need regular maintenance.

Aus der Deutschen Patentschrift DE-C 23 19 877 ist ein Kippmast der eingangs genannten Art bekannt, bei dem das Entriegeln und Verriegeln des Mastes durch vertikales Anheben und Senken des Mastrohrteils bzw. des Pfostenoberteils mittels einer Zylinder-Kolben-Einheit in einer Langlochführung des Mastfußteils bzw. des Bodenteils erfolgt. Durch das Heben des Mastes gelangt das Pfostenoberteil aus dem Wirkbereich einer Rückhalteklinke, so daß er prinzipiell mit dem Drehpunkt in der Langlochführung gekippt werden könnte. Die Wirkung der im Sinne einer Verlängerung beaufschlagten Kolben-Zylinder-Einheit, durch die der Mast zum Entriegeln angehoben wird, steht jedoch einer derarigen Kippbewegung gerade entgegen. Als unumgänglicher Bestandteil der dort gezeigten Konstruktion muß daher eine Hilfs-Kolben-Zylinder-Einheitvorgesehen werden, die zum Überkippen des Pfostenoberteils dient, wenn dieser von der druckbeaufschlagten HauptKolben-Zylinder-Einheit angehoben ist oder es muß eine zusätzliche Haltevorrichtung für den Mast in der angehobenen Stellung im Langloch vorhanden sein, nach deren Eingriff die Kolben-Zylinder-Einheit druckentlastet werden kann. Dadurch wird die hydraulische Betätigungsvorrichtung für den Kippmast kompliziert, da sie stets zwei hydraulische Kolben-Zylinder-Einheiten umfassen muß. Die mechanische Haltevorrichtung müßte sehr stark dimensioniert sein, da sie das gesamte Gewicht des Mastes auffangen muß. Für die Bedienung gilt darüber hinaus, daß Fehlermöglichkeiten gegeben sind, wenn die richtige Reihenfolge der Ansteuer- bzw. Umsteuer- und Verriegelungsvorgänge nicht eingehalten wird. Ein Zurückfallen des oberen Pfostenteils in der Langlochführung bei einer Fehlsteuerung oder Fehlbedienung kann zu Schäden am Mast oder an der von ihm getragenen Beleuchtungseinrichtung führen.From German patent DE-C 23 19 877 a tilting mast of the type mentioned is known, in which the unlocking and locking of the mast by vertically lifting and lowering the mast tube part or the post upper part by means of a cylinder-piston unit in an elongated hole guide of the mast foot part or the bottom part. By lifting the mast, the upper part of the post comes out of the effective range of a retaining pawl, so that it could in principle be tilted with the pivot point in the slot guide. However, the effect of the piston-cylinder unit acted upon in the sense of an extension, by means of which the mast is raised for unlocking, is precisely opposed to such a tilting movement. As an indispensable part of the construction shown there, an auxiliary piston-cylinder unit must therefore be provided, which is used to tip over the post upper part when it is raised by the pressurized main piston-cylinder unit or an additional holding device for the mast in the raised position Position in the slot be present, after which the piston-cylinder unit can be relieved of pressure. This complicates the hydraulic actuating device for the tilting mast, since it must always comprise two hydraulic piston-cylinder units. The mechanical holding device would have to be very large, since it has to absorb the entire weight of the mast. For operation, it also applies that there is a possibility of errors if the correct sequence of control, reversing and locking processes is not observed. Falling back of the upper post part in the elongated hole guide in the event of incorrect control or incorrect operation can lead to damage to the mast or to the lighting device carried by it.

Ferner sind aus der GB-A 20 63 346 und der US-A 1 714 698 Kippmastkonstruktionen bekannt, die von Hand, beispielsweise durch ein Seil aufricht und niederlegbar sind. Bei beiden sind gegen eine Federkraft von Hand mit der normalen Handkraft entriegelbare Verriegelungselemente vorgesehen.Furthermore, from GB-A 20 63 346 and US-A 1 714 698 tilting mast constructions are known which can be erected and put down by hand, for example by a rope. In both, locking elements can be unlocked against a spring force by hand with the normal hand force.

Der vorliegenden Erfindung liegt die Aufgabe zugrunde, eine Kippmastkonstruktion zu schaffen, die sowohl im Aufbau als auch in der Steuerung der Betätigungsglieder vereinfacht ist, wobei insbesondere das Einleiten des Kippvorganges erleichtert sein soll, ohne daß die Gefahr besteht, daß dies unbefugt oder unbeabsichtigt erfolgt.The present invention has for its object to provide a tilting mast structure that is simplified both in structure and in the control of the actuators, in particular the initiation of the tilting process should be facilitated without the risk that this is done unauthorized or unintentional.

Erfindungsgemäß ist zur Lösung vorgesehen, daß der Verriegelungsmechanismus aus einem gegen Federkraft entriegelbaren, im Mastschuh angebrachten Riegelelement und einem am Mastfußteil angebrachten Einrastmittel besteht, und daß das Riegelelement über die an dem aus dem Mastschuh herausgeführten Ende des schwenkbaren Betätigungshebels anlenkbare Kolben-Zylinder-Einheit verstellbar ist.According to the invention it is provided for the solution that the locking mechanism consists of a locking element which can be unlocked against spring force and which is attached in the mast shoe and a latching means which is attached to the mast foot part, and that the locking element is adjustable via the piston-cylinder unit which can be linked to the end of the pivotable actuating lever which is led out of the mast shoe is.

Alternativ ist zur Lösung dieser Aufgabe vorgesehen, daß der Verriegelungsmechanismus aus einen gegen Federkraft entriegelbaren, im Mastschuh angebrachten Riegelelement und einem am Mastfußteil angebrachten Einrastmittel besteht, und das Riegelelement über eine aus dem geöffneten Handloch des Mastschuhs herausragende, mit dem Riegelelement oder mit einem daran angeschlossenen Hebelgestänge zeitweilig verbindbare Verlängerungsstange entriegelbar ist.Alternatively, to solve this problem it is provided that the locking mechanism consists of a locking element that can be unlocked against spring force, is attached in the mast shoe and a latching means attached to the mast foot part, and the locking element has a locking element that protrudes from the open hand hole of the mast shoe, with the locking element or with one connected to it Lever linkage temporarily connectable extension rod is unlockable.

Durch die erfindungsgemäße Ausgestaltung der Konstruktion kann der Kippvorgang durch eine Druckbeaufschlagung der Kolben-Zylinder-Einheit im Sinne eines Verkürzens eingeleitet werden, nachdem die im Inneren des Mastschuhs gesichert untergebrachte Verriegelungsvorrichtung gelöst ist. Der Mast befindet sich nach dem Lösen der Verriegelungsvorrichtung in einem nahezu labilen Gleichgewicht, so daß in vorteilhafter Weise auf eine Hilfs-Kolben-Zylinder-Einheit oder dergleichen verzichtet werden kann. Die Sicherung gegen unbefugten Zugriff wird dadurch sichergestellt, daß sich der Verriegelungsmechanismus innerhalb des als Kastenkörper ausgebildeten Mastschuhs befindet und nicht manuell von außen entriegelbar ist.As a result of the design of the construction according to the invention, the tilting process can be initiated by pressurizing the piston-cylinder unit in the sense of shortening after the locking device securely accommodated inside the mast shoe has been released. After releasing the locking device, the mast is in an almost unstable equilibrium, so that an auxiliary piston-cylinder unit or the like can advantageously be dispensed with. Protection against unauthorized access is ensured by the fact that the locking mechanism is located inside the mast shoe designed as a box body and cannot be unlocked manually from the outside.

In weiterer Ausgestaltung der Erfindung ist vorgesehen, daß das Riegelelement als verschiebbarer Riegel, verlagerbarer Sperrbolzen, verschwenkbare Klinke oderverdrehbare Nocken und das Einrastmittel als Öse, mit einem Loch versehene Lasche, Raste oder Ausnehmgung ausgebildet ist.In a further embodiment of the invention it is provided that the locking element is designed as a displaceable bolt, displaceable locking bolt, pivotable pawl or rotatable cam and the latching means as an eyelet, a tab provided with a hole, detent or recess.

Zur Sicherung des verriegelten Zustandes ist nach der Erfindung in weiterer Ausgestaltung vorgesehen, daß im Inneren des Mastschuhs ein über das Handloch zugängliches Sicherungselement zur Sicherung der Riegelemente anbringbar ist.To secure the locked state, according to the invention it is provided in a further embodiment that a securing element accessible via the hand hole for securing the locking elements can be attached inside the mast shoe.

Nach einem weiteren wesentlichen Gedanken der Erfindung ist vorgesehen, daß für den Fall, daß ein Betätigungsorgan ständig aus dem Mast herausgeführt ist, zur weiteren Sicherung dieses nur dann in eine entriegelte Stellung überführbar ist, wenn eine Betätigungskraft aufgebracht wird, die höher ist als die normale Handkraft einer Bedienungsperson.According to a further essential concept of the invention, it is provided that, in the event that an actuating member is continuously guided out of the mast, it can only be transferred to an unlocked position for further securing if an actuating force is applied which is higher than the normal one Hand power of an operator.

Im Fall der zweiten Alternative, nach der die Entriegelung über eine Verlängerungsstange erfolgt, die zeitweilig anbringbar ist, ist vorgesehen, daß an dem lösbaren Deckel für das Handloch im Mastschuh ein Sperrelement angeordnet ist, und ein Teil des Verriegelungsmechanismus, insbesondere der verlängerbare Handhebel in Verriegelungsstellung bei geschlossenem Deckel durch das Sperrelement blockiert ist.In the case of the second alternative, after which the unlocking takes place via an extension rod which can be temporarily attached, it is provided that a locking element is arranged on the releasable cover for the hand hole in the mast shoe, and part of the locking mechanism, in particular the extendable hand lever in the locking position is blocked by the locking element when the lid is closed.

Diese Maßnahme ist ansich für die Sicherung eines über eine Stellschraube verriegelbaren Riegels durch die GB-A 2 063 346 bekannt.This measure is known for securing a bolt that can be locked by means of an adjusting screw by GB-A 2 063 346.

Durch das vorgesehene Sperrelement wird sichergestellt, daß der Deckel ausschließlich in der Verriegelungsstellung geschlossen werden kann und bei entriegeltem Mechanismus ein Schließen des Deckels verhindert wird. Die jeweilige Bedienungsperson, die den Kippmast nicht ohne ein Verschließen des Deckels verlassen wird, ist somit gezwungen, die Verriegelungsvorrichtung ordnungsgemäß im Sinne eines Verriegelns zu betätigen.The locking element provided ensures that the lid can only be closed in the locked position and that the lid is prevented from closing when the mechanism is unlocked. The respective operator who does not leave the tilting mast without closing the cover is thus forced to operate the locking device properly in the sense of locking.

Der Deckel kann weiterhin den Zugang zu innerhalb des Mastschuhs angeordneten Elektroinstallationeneines Lichtmastes gewähren, so daß hiermit eine Doppelfunktion erfüllt ist.The cover can furthermore provide access to electrical installations of a light mast arranged inside the mast shoe, so that a dual function is thereby fulfilled.

Zur Festlegung der aufsteckbaren Verlängerungsstange ist vorgesehen, daß diese in Entriegelungsstellung am Mastschuh mittels einer Steckbolzenverbindung festlegbar ist.To fix the attachable extension rod, it is provided that it can be fixed in the unlocked position on the mast shoe by means of a plug-in pin connection.

Hierdurch kann die Bedienungsperson sich auf das Legen des Mastes konzentrieren und ist nicht gezwungen, während dieses Vorganges den Verriegelungsmechanismus gegen die Wirkung der Federkraft festzuhalten.This allows the operator to concentrate on laying the mast and is not forced to hold the locking mechanism against the action of the spring force during this process.

Ferner ist vorgesehen, daß bei einer Ausführungsform bei der die Entriegelung über die Kolben-Zylinder-Einheit erfolgt, das untere Ende der Kolben-Zylinder-Einheit mittels Steckbolzenverbindung in einem Augloch des beweglichen Betätigungshebels befestigbar ist, daß in Verriegelungsstellung das Augloch am Hebelende oberhalb eines unteren festen Anlenkpunktes für die Kolben-Zylinder-Einheit liegt und daß in Entriegelungsstellung das Hebelende gemeinsam mit dem unteren Ende der Kolben-Zylinder-Einheit am festen unteren Anlenkpunkt mittels Steckbolzenverbindung durch deckungsgleiche Auglöcher festlegbar sind.Furthermore, it is provided that in one embodiment in which the unlocking takes place via the piston-cylinder unit, the lower end of the piston-cylinder unit can be fastened in a hole in the eye of the movable actuating lever by means of a plug-in connection, that in the locking position the eye hole at the lever end above a lower fixed articulation point for the piston-cylinder unit and that in the unlocked position the lever end can be fixed together with the lower end of the piston-cylinder unit at the fixed lower articulation point by means of a plug connection through congruent eye holes.

Zur Betätigung wird die Kolben-Zylinder-Einheit im Sinne einer Verlängerung beaufschlagt und der Verriegelungsmechanismus dadurch gelöst. Die sich dabei gegen den Boden oder das Fundament abstützende Kolben-Zylinder-Einheit verhindert ein ungewünschtes Überkippen des Mastes.For actuation, the piston-cylinder unit is acted on as an extension and the locking mechanism is thereby released. The piston-cylinder unit, which is supported against the floor or the foundation, prevents the mast from overturning.

Der untere Anlenkpunkt der Kolben-Zylinder-Einheit wird nunmehr zugleich am festen unteren Anlenkpunkt festgelegt, wonach die Kolben-Zylinder-Einheit umgesteuert und im Sinne einer Verkürzung druckbeaufschlagt wird. Hierdurch erfolgt erfindungsgemäß das Überkippen des Mastes und dessen kontrolliertes Umlegen. Da das Entriegeln nur mit Hilfe der Kolben-Zylinder-Einheit möglich ist und ohne Herstellen der zusätzlichen Steckverbindung bei einem Umsteuern gleich wieder verriegelt wird, kann bei der hier beschriebenen Ausgestaltung ein Kippen des Mastes nur bei vorschriftmäßig angebrachter Kolben-Zylinder-Einheit erfolgen. Es ist hierdurch eine erhöhte Sicherheit gegen jegliche Fehlbedienung gegeben.The lower articulation point of the piston-cylinder unit is now also fixed at the fixed lower articulation point, after which the piston-cylinder unit is reversed and pressurized to shorten it. In this way, according to the invention, the mast is tipped over and its controlled folding is carried out. Since unlocking is only possible with the aid of the piston-cylinder unit and is locked again immediately when reversing without establishing the additional plug-in connection, in the embodiment described here, the mast can only be tilted when the piston-cylinder unit is fitted as specified. This provides increased security against any incorrect operation.

Die Verriegelungsvorrichtung kann in günstiger Ausgestaltung dadurch gekennzeichnet sein, daß bei aufgerichtetem Mast die Öse oder Lasche am Mastfußteil durch eine Öffnung im Mastschuh ins Innere des Mastschuhs hindurchtritt. Diese Ausgestaltung ist insbesondere dann günstig, wenn die Verriegelungsvorrichtung, wie oben beschrieben, einen einfachen Handhebel und einen mit einem Sperrelement versehenen Deckel umfaßt. In gleicher Weise ist jedoch auch die Kombination mit einem, wie ebenfalls oben beschrieben, aus dem Mastschuh vortretenden Hebelende über ein Gestänge möglich, wobei zum Entriegeln des Mastes die Kolben-Zylinder-Einheit am Hebelende anlenkbar ist.In an advantageous embodiment, the locking device can be characterized in that when the mast is erected, the eyelet or tab on the mast foot part passes through an opening in the mast shoe into the interior of the mast shoe. This configuration is particularly advantageous when the locking device, as described above, comprises a simple hand lever and a cover provided with a locking element. In the same way, however, a combination with a lever end protruding from the mast shoe, as also described above, is also possible via a linkage, the piston-cylinder unit being articulated at the lever end to unlock the mast.

In einer weiteren, zur vorstehend beschriebenen Ausgestaltung alternativen Ausbildung, kann die Verriegelungseinrichtung dadurch gekennzeichnet sein, daß - bei aufgerichtetem Mastein senkrecht zum Betätigungshebel horizontal angeordneter Sperrbolzen durch Langlöcher im unteren Teil des Mastschuhs hindurchtritt und zur Verriegelung des aufgerichteten Mastes mit seinen Enden in Ausnehmungen an den seitlichen unteren Kanten des Mastfußteils eingreift. Hierbei kann der Betätigungshebel als einarmiger Hebel ausgestaltet werden, wodurch die Konstruktion vereinfacht wird, da Zwischenglieder und Übertragungsglieder vollkommen entfallen können.In a further embodiment, alternative to the embodiment described above, the locking device can be characterized in that - when the mast is erected, locking bolts horizontally arranged perpendicular to the actuating lever pass through elongated holes in the lower part of the mast shoe and for locking the erected mast with its ends in recesses in the engages lower lateral edges of the mast foot part. Here, the actuating lever can be designed as a one-armed lever, which simplifies the construction, since intermediate links and transmission links can be completely eliminated.

Obwohl in der Regel der Betätigungshebel durch die gewählte Federkraft bzw. das gewählte Übersetzungsverhältnis von außen nicht manuell zu betätigen sein soll, ist es in bevorzugter Weiterbildung vorgesehen, daß das Sicherungselement ein Sicherungsstift, über den der Riegel, ein an das Riegelelement angeschlossener Hebel oder eine die Feder führende und aus dieser vorstehende Stange festlegtbar ist. In Verbindung mit einem verschließbaren Deckel im Mastschuh ist hiermit die Sicherheit gegen unbefugtes Entriegeln des Mastes nochmals gesteigert.Although, as a rule, the actuating lever should not be able to be actuated manually from the outside by the selected spring force or the selected transmission ratio, in a preferred further development it is provided that the securing element is a securing pin via which the bolt, a lever connected to the bolt element or a the spring leading and from this protruding rod can be fixed. In conjunction with a lockable cover in the mast shoe, this further increases the security against unauthorized unlocking of the mast.

Der obere Anlenkpunkt für die Kolben-Zylinder-Einheit ist bei aufgerichtetem Mast bevorzugt außermittig am Mastrohrteil senkrecht oberhalb des unteren Anlenkpunktes angeordnet, wobei das entsprechende Lageraue an einem rohrschellenartig angeschweißten Kragen oder einem durch das Rohr durchgesteckten Riegel vorgesehen sein kann. Je größer der Mittenversatz bzw. der horizontale Versatz gegenüber dem Kipplagerpunkt des Kippmastes ist, um so leichter stellt sich das Einleiten des Umlegens des Mastes dar.When the mast is erected, the upper articulation point for the piston-cylinder unit is preferably arranged off-center on the mast tube part vertically above the lower articulation point, the corresponding bearing surface being able to be provided on a collar which is welded like a pipe clamp or on a bolt inserted through the tube. The greater the center offset or the horizontal offset compared to the Kippla point of the tilting mast, the easier it is to initiate the folding of the mast.

Je nach Größe des Mittenversatzes des Kipplagerpunktes kann bei der eingangs genannten ersten Ausgestaltung ggfs. sogar das Kippen manuell eingeleitet werden und damit auf eine einfach wirkende Kolben-Zylinder-Einheit übergegangen werden.Depending on the size of the center offset of the tilting bearing point, in the first embodiment mentioned at the outset, even the tilting can be initiated manually and thus transferred to a single-acting piston-cylinder unit.

Die Kolben-Zylinder-Einheit ist - wie im Stand der Technik bekannt-als transportable Einheit ausgebildet, die nur bei Bedarf am Kippmast angebracht wird und über ein eigenständiges Druckerzeugungssystem, insbesondere mit Handpumpe, sowie über eigene Steuerungssysteme zum Umsteuern zwischen Verlängerung und Verkürzung sowie insbesondere mit Drosselelementen zum Kontrollieren der Kippgeschwindigkeit des Mastes versehen ist.As is known in the prior art, the piston-cylinder unit is designed as a transportable unit which is attached to the tilting mast only when required and via an independent pressure generation system, in particular with a hand pump, and via its own control systems for reversing between extension and shortening, and in particular is provided with throttle elements to control the tilting speed of the mast.

Weitere Einzelheiten der erfindungsgemäßen Konstruktion und ein besseres Verständnis der entsprechenden Funktionsweise läßt sich aus den Zeichnungen ersehen.

  • Fig. 1 zeigt eine Konstruktion mit manuell bedienbarer Entriegelungsvorrichtung innerhalb des Mastschuhs.
  • Fig. 2 zeigt eine Konstruktion mit einem ersten von außerhalb des Mastschuhs hydraulisch bedienbaren Entriegelungsmechanismus.
  • Fig. 3 zeigt eine Konstruktion mit einem weiteren von außerhalb des Mastschuhs hydraulisch bedienbaren Entriegelungsmechanismus.
Further details of the construction according to the invention and a better understanding of the corresponding functioning can be seen from the drawings.
  • Fig. 1 shows a construction with a manually operated unlocking device within the mast shoe.
  • 2 shows a construction with a first unlocking mechanism which can be operated hydraulically from outside the mast shoe.
  • 3 shows a construction with a further unlocking mechanism which can be operated hydraulically from outside the mast shoe.

Die sich in den Figuren entsprechenden Teile sind mit gleichen Ziffern versehen und einleitend gemeinsam beschrieben. Jeweils in der linken Bildhälfte ist der Kippmast aufgerichtet und verriegelt, jeweils in der rechten Bildhälfte entriegelt und in die Horizontale gelegt dargestellt.The corresponding parts in the figures are provided with the same numbers and are initially described together. The tilting mast is erected and locked in the left half of the picture, unlocked in each case in the right half of the picture and shown laid horizontally.

Die Konstruktion weist einen kastenförmigen Mastschuh 1 mit in der Regel quadratischem Querschnitt auf, dessen Bodenplatte 24 ortsfest an einem Fundament anschraubbar ist. In dem Mastschuh 1, der mit einer oberen Schräge 25 versehen ist, ist in einer Kipplagerstelle 6 ein Kippmast 2 gelagert, der ein Mastfußteil 3 und ein Mastrohrteil 4 umfaßt. Das Mastfußteil 3 des Kippmastes 2 umgreift in aufrechter Stellung den Mastschuh 1, wobei sich seine Grundform als unten und einseitig offener Kasten darstellt. Die Schräge 25 am Mastschuh 1 ermöglicht die Schwenkbewegung der Abdeckplatte 26 des Mastfußteils 3 um den Kipplagerpunkt 6. Auf der Abdeckplatte 26 ist das obere Mastrohrteil 4 von in der Regel rundem Querschnitt aufgesetzt, wobei Knotenbleche 27 zur Verstärkung vorgesehen sind.The construction has a box-shaped mast shoe 1 with a generally square cross section, the base plate 24 of which can be screwed onto a foundation in a stationary manner. In the mast shoe 1, which is provided with an upper slope 25, a tilting mast 2 is mounted in a tilting bearing point 6, which comprises a mast foot part 3 and a mast tube part 4. The mast foot part 3 of the tilting mast 2 encompasses the mast shoe 1 in an upright position, its basic shape being a box open at the bottom and on one side. The bevel 25 on the mast shoe 1 enables the pivoting movement of the cover plate 26 of the mast foot part 3 about the tilting bearing point 6. The upper mast tube part 4 of generally round cross section is placed on the cover plate 26, with gusset plates 27 being provided for reinforcement.

Im Winkelbereich zwischen Bodenplatte 24 und Kastenkörper des Mastschuhs 1 ist ein Auglagerbock 15 vorgesehen, an dem eine hydraulische Kolben-Zylinder-Einheit 5 mit dem unteren Ende anlenkbar ist. Das obere Ende der Kolben-Zylinder-Einheit 5 ist in einem Lagerbock 29 anlenkbar, der am Ende eines Riegels oder eines Schellenbandes 23 im Bereich des Mastrohrteils 4 ausgebildet ist. Die Kolben-Zylinder-Einheit 5, deren Steuerungsmittel und Druckerzeugungsmittel nicht dargestellt sind, ist umsteuerbar und kann unter Last jeweils verlängert und verkürzt werden.In the angular area between the base plate 24 and the box body of the mast shoe 1, an eye bearing block 15 is provided, to which a hydraulic piston-cylinder unit 5 can be linked with the lower end. The upper end of the piston-cylinder unit 5 can be articulated in a bearing block 29 which is formed at the end of a bolt or a clamp band 23 in the area of the mast tube part 4. The piston-cylinder unit 5, the control means and pressure generating means are not shown, is reversible and can be lengthened and shortened under load.

In den Fig. 1 und 2 ist im Inneren des Mastfußteils 3 eine senkrecht abstehende Lasche 9 mit einem Loch vorgesehen, die bei aufgerichtetem Mast durch eine öffnung 10 im Mastschuh 1 hindurchtritt. Im Bereich der Öffnung 10 ist im Mastschuh 1 ein Riegel 8 vorgesehen ist, der gegen die Kraft einer Feder 28 vertikal verschiebbar ist. Der Riegel 8 ist in die Lasche 9 einschiebbar und verriegelt den Kippmast 2 durch Anliegen an der Innenwand des Mastschuhs 1.1 and 2, a vertically protruding tab 9 with a hole is provided in the interior of the mast foot part 3, which, when the mast is erected, passes through an opening 10 in the mast shoe 1. In the area of the opening 10, a bolt 8 is provided in the mast shoe 1, which is vertically displaceable against the force of a spring 28. The latch 8 can be inserted into the tab 9 and locks the tilting mast 2 by resting on the inner wall of the mast shoe 1.

In Fig. 1 ist an dem Riegel 8 ein zweiarmiger Handhebel 14 angeordnet, der in verriegelter Stellung von einem Sperrelement 13 im Inneren eines lösbaren Deckels 12 blockiert wird. Nach dem Entfernen des Deckels 12 kann der Handhebel 14 insbesondere mittels einer Verlängerungsstange 20 nach unten gedrückt werden, wodurch der Riegel 8 aus der Lasche 9 gezogen wird. In der entriegelten Position ist die Verlängerungsstange 20 mittels einer Steckbolzenverbindung am Mastschuh 1 festlegbar.In Fig. 1, a two-armed hand lever 14 is arranged on the bolt 8, which is blocked in the locked position by a locking element 13 inside a removable cover 12. After the cover 12 has been removed, the hand lever 14 can be pressed down in particular by means of an extension rod 20, as a result of which the bolt 8 is pulled out of the tab 9. In the unlocked position, the extension rod 20 can be fixed on the mast shoe 1 by means of a plug-in pin connection.

In Fig. 2 ist am Riegel 8 ein einarmiger Hebel 30 angeordnet, der über einen Lenker 31 vom Betätigungshebel 32 verstellt werden kann. Der auf einer Drehachse 22 gelagerte zweiarmige Betätigungshebel 32, dessen Hebelende 17 durch eine Öffnung 16 im Mastschuh 1 hindurchtritt, weist außen ein Augloch 19 auf, an dem die Kolben-Zylinder-Einheit 5 anlenkbar ist. Bei einem Verlängern der Kolben-Zylinder-Einheit 5 durch Druckbeaufschlagung wird der Hebel 32 im Uhrzeigersinn bewegt, wodurch der Mast entriegelt wird. In der verdrehten Stellung des Hebels 32 kommt der untere Anlenkpunkt der Kolben-Zylinder-Einheit 5 in Deckung mit dem Augloch 18 des auf der Bodenplatte 24 fest angeordneten Auglagerbock 15. Durch das Herstellen einer Steckbolzenverbindung 21 zwischen unterem Anlenkpunkt der Kolben-Zylinder-Einheit 5, Hebelende 17 und Auglagerbock 15 wird zugleich der Verriegelungsmechanismus 7 in seiner Entriegelungsstellung gehalten und die Kolben-Zylinder-Einheit 5 so festgelegt, daß eine Druckbeaufschlagung im Sinne eines Verkürzens ein Umlegen des Kippmastes 2 bewirkt. Ein Sicherungsbolzen ist an einem Teil des Riegels 8 zum Sichern des Verriegelungsmechanismus 7 vorgesehen.In Fig. 2, a one-armed lever 30 is arranged on the bolt 8, which can be adjusted via a handlebar 31 by the operating lever 32. The two-armed actuating lever 32 mounted on an axis of rotation 22, the lever end 17 of which passes through an opening 16 in the mast shoe 1, has an outside eye hole 19 to which the piston-cylinder unit 5 can be articulated. When the piston-cylinder unit 5 is lengthened by pressurization, the lever 32 is moved clockwise, whereby the mast is unlocked. In the rotated position of the lever 32, the lower articulation point of the piston-cylinder unit 5 comes into congruence with the eye hole 18 of the eye bearing block 15 fixedly arranged on the base plate 24. By establishing a plug-in pin connection 21 between the lower articulation point of the piston-cylinder unit 5 , Lever end 17 and eye bracket 15, the locking mechanism 7 is simultaneously held in its unlocked position and the piston-cylinder unit 5 is set such that pressurization in the sense of shortening causes the tilting mast 2 to be flipped over. A securing bolt is provided on part of the bolt 8 for securing the locking mechanism 7.

In Fig. 3 ist ein Betätigungshebel 36 im Inneren des Mastschuhs 1 auf einer Drehachse 35 gelagert und tritt mit dem Hebelende 17 durch eine Öffnung 16 im Mastschuh 1 hindurch.In Fig. 3, an operating lever 36 is mounted inside the mast shoe 1 on an axis of rotation 35 and passes with the lever end 17 through an opening 16 in the mast shoe 1.

Das gekröpfte Hebelende 17 weist ein oberes Augloch 19 zum Anlenken des unteren Endes der Kolben-Zylinder-Einheit 5 sowie ein unteres Augloch 37 auf, daß sich in Verriegelungsstellung oberhalb des Augloches 18 im Auglagerbock 15 befindet. Am Betätigungshebel 36 ist ein senkrecht dazu stehender horizontal angeordneter Sperrbolzen 38 befestigt, der durch Langlöcher 39 im Mastschuh 1 beiderseits hindurchtritt. Dieser Sperrbolzen 38 greift in der Verriegelungsstellung in Ausnehmungen 40 an der Unterkante des Mastfußteils 3 ein, die mit Abstand von der Bodenplatte 24 verläuft, und verriegelt in dieser Weise den Mast in aufrechter Stellung. An dem Betätigungshebel 36 ist eine Stange 41 angelenkt, über die die Kraft einer Feder 28 auf den Betätigungshebel 36 im Sinne eines Hochhaltens übertragen wird. Die Stange 41 ist mit einem Sicherungsbolzen 42 verriegelbar. Nach einem Entsichern der Stange 41 kann der Betätigungshebel 36 durch Druckbeaufschlagung der Kolben-Zylinder-Einheit 5 im Sinne eines Verlängerns gegen die Kraft der Feder 28 nach unten gedrückt werden, wodurch der Sperrbolzen 38 aus dem Bereich der Ausnehmung 40 gelangt, wodurch der Kippmast 2 entriegelt ist. Durch Herstellen einer Steckbolzenverbindung 33 zwischen dem unteren Augloch 37 im Hebelende 17 des Betätigungshebels 36 und dem Augloch 18 im Auglagerbock 15 kann die Entriegelungsstellung des Sperrbolzens 38 gesichert und zugleich ein fester Anlenkpunkt für das untere Ende der Kolben-Zylinder-Einheit 5 hergestellt werden, so daß durch eine Druckbeaufschlagung im Sinne eines Verkürzens der Kolben-Zylinder-Einheit 5 ein Überkippen des Mastes eingeleitet werden kann.The cranked lever end 17 has an upper eye hole 19 for articulating the lower end of the piston-cylinder unit 5 and a lower eye hole 37 that is located in the locking position above the eye hole 18 in the eye bracket 15. A vertically arranged, horizontally arranged locking pin 38 is fastened to the actuating lever 36 and passes through elongated holes 39 in the mast shoe 1 on both sides. This locking pin 38 engages in the locking position in recesses 40 on the lower edge of the mast foot part 3, which is at a distance from the Bottom plate 24 extends, and in this way locks the mast in an upright position. A rod 41 is articulated on the actuating lever 36, via which the force of a spring 28 is transmitted to the actuating lever 36 in the sense of holding it up. The rod 41 can be locked with a securing bolt 42. After the rod 41 has been unlocked, the actuating lever 36 can be pressed downward against the force of the spring 28 by pressurizing the piston-cylinder unit 5, as a result of which the locking pin 38 comes out of the region of the recess 40, as a result of which the tilting mast 2 is unlocked. By making a plug-in pin connection 33 between the lower eye hole 37 in the lever end 17 of the actuating lever 36 and the eye hole 18 in the eye bracket 15, the unlocking position of the locking pin 38 can be secured and at the same time a fixed articulation point for the lower end of the piston-cylinder unit 5 can be produced that a tilting of the mast can be initiated by pressurization in the sense of shortening the piston-cylinder unit 5.

Alternativ kann die Lasche g durch eine verschwenkbare Klinke ersetzt werden. Diese ist dann schwenkbar am Mastfußteil 3 angeordnet und durch eine Feder belastet. Beim Aufrichten des Mastes wird die Klinke durch die Öffnung 10 hindurchbewegt und legt sich mit einem Hakenteil an die Innenwandung des Mastschuhteiles 1 an, wodurch Mastschuh und Mastfußteil miteinander verriegelt werden. In ähnlicher Weise könnte ein verdrehbarer Nocken vorgesehen sein, der nach seinem Verdrehen eine formschlüssige Verbindung zwischen dem Mastfußteil 3 und dem Mastschuh 1 erzeugt.Alternatively, the tab g can be replaced by a pivotable latch. This is then pivotally arranged on the mast foot part 3 and loaded by a spring. When erecting the mast, the pawl is moved through the opening 10 and rests with a hook part on the inner wall of the mast shoe part 1, whereby the mast shoe and mast foot part are locked together. In a similar way, a rotatable cam could be provided which, after being rotated, creates a positive connection between the mast foot part 3 and the mast shoe 1.

Claims (12)

1. A tiltable pole comprising a pole shoe (1) attachable so as to be stationary, and a tiltable pole (2) supported thereon so as to be tiltable and having a lower pole base part (3) and an upper tubular pole part (4), as well as comprising a double-acting hydraulic piston/cylinder unit (5) articulated at the pole shoe (1) below the pivot bearing point (6) on the one hand and eccentrically at the tiltable pole (2) on the other hand, especially at its tubular pole part (4) above the pivot bearing point (6), with the pole shoe (1) being essentially a tube or box member with a closed cross-section and with the pole base part (3) being a tube or box member whose cross-section is open on one side and which, in the upright position, encloses the pole shoe (1) and has been provided with a handhole (11) closable with a removable cover (12), as well as comprising a locking mechanism (7) for locking the pole shoe (1) relative to the pole base part (3) when the pole is in the upright condition, characterised in that the locking mechanism consists of a locking element (8, 38) which is unlockable against the force of a spring and attached in the pole shoe (1) and of engaging means (9, 40) attached to the pole base part (3) and that the locking element (8, 38) is adjustable via the piston/cylinder unit (5) articulatable at the end (17) of the pivotable operating lever (28, 36) projecting from the pole shoe (1).
2. A tiltable pole comprising a pole shoe (1) attachable so as to be stationary, and a tiltable pole (2) supported thereon so as to be tiltable and having a lower pole base part (3) and an upper tubular pole part (4), as well as comprising a double-acting hydraulic piston/cylinder unit (5) articulated at the pole shoe (1) below the pivot bearing point (6) on the one hand and eccentrically at the tiltable pole (2) on the other hand, especially at its tubular pole part (4) above the pivot bearing point (6), with the pole shoe (1) being essentially a tube or box member with a closed cross-section and with the pole base part (3) being a tube or box member whose cross-section is open on one side and which, in the upright position, encloses the pole shoe (1) and has been provided with a handhole (11) closable with a removable cover (12), as well as comprising a locking mechanism (7) for locking the pole shoe (1) relative to the pole base part (3) when the pole is in the upright condition, characterised in that the locking mechanism consists of a locking element (8) which is unlockable against the force of a spring and attached in the pole shoe (1) and of engaging means (9) attached to the pole base part (3) and that the locking element (8) may be unlocked via an extension bar (20) projecting from the open handhole (11) of the pole shoe (1) and temporarily connectable to the locking locking pin (38), a pivotable latch or a twistable cam and that the engaging means are designed as an eye, a clip (9) provided with a hole, a catch or a recess (40).
4. A tiltable pole according to claim 1 or 2, characterised in that for the purpose of securing the locking element (8, 38) in the locked position, the inside of the pole shoe (1) may be provided with a securing element (34, 42) accessible via the handhole (11).
5. A tiltable pole according to claim 1, characterised in that the operating force to be applied to the end (17) of the pivotable operating lever (28, 36) projecting from the pole shoe (1) for the purpose of unlocking the locking element (8, 38) exceeds the standard manual force of an operative.
6. A tiltable pole according to claim 2, characterised in that at the removable cover (12) for the handhole (11) in the pole shoe (1) there has been arranged a blocking element (13) and that part of the locking mechanism (7), especially the extendable hand lever (14), is blocked by the blocking element (13) in the locked condition with the cover (12), being in position.
7.A tiltable pole according to claim 2, characterised in that in the unlocked condition, the plug- in extension bar (20) may be fixed to the pole shoe (1) by means of a socket pin connection (21).
8. A-tiltable pole according to claim 1, characterised in that the lower end of the piston/cylinder unit (5) may be fixed by a socket pin connection in an eye hole (19) of the movable operating lever (28, 36), that in the locked condition, the eye hole (19) at the lever end (17) is positioned above a lower fixed articulation point (15) for the piston/ cylinder unit (5) and that in the unlocked condition, the lever end (17) together with the lower end of the piston/cylinder unit (5) may be fixed at the fixed lower articulation point (15) by means of socket pins (21) extending through congruent eye holes (18, 19).
9. A tiltable pole according to claim 1, characterised in that with the pole in the upright position, the eye or clip (9) at the pole base part (3) passes through an aperture (10) in the pole shoe (1) into the interior of the pole shoe (1).
10. A tiltable pole according to claim 3, characterised in that with the pole in the upright position, a locking pin (38) horizontally arranged at right angles relative to the operating lever (36) passes through oblong holes (39) in the lower part of the pole shoe (1), with its ends, for the purpose of locking the upright pole, engaging recesses (40) in the lateral lower edges of the pole base part (3).
11. A tiltable pole according to claim 4, characterised in that the securing element is a securing pin (34, 42) via which the bolt (8), a lever (36) connected to the locking element (8, 38) or a bar (41) guiding the spring (28) and projecting therefrom may be fixed.
12. A tiltable pole according to'one of claims 1, 2 or 5, characterised in that with the pole being in the upright position, the upper articulation point for the piston/cylinder unit (5) has been provided vertically above the lower articulation point and eccentrically at the tubular pole part (4) and designed especially in the form of a socket pin connection with a collar (23) welded on like a pipe clip or with a bolt passing through the tube.
EP86107057A 1985-06-22 1986-05-23 Tipping mast Expired - Lifetime EP0205955B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86107057T ATE55168T1 (en) 1985-06-22 1986-05-23 TILT MAST.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3522423A DE3522423C1 (en) 1985-06-22 1985-06-22 Tilting mast
DE3522423 1985-06-22

Publications (3)

Publication Number Publication Date
EP0205955A2 EP0205955A2 (en) 1986-12-30
EP0205955A3 EP0205955A3 (en) 1987-09-30
EP0205955B1 true EP0205955B1 (en) 1990-08-01

Family

ID=6273946

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86107057A Expired - Lifetime EP0205955B1 (en) 1985-06-22 1986-05-23 Tipping mast

Country Status (4)

Country Link
EP (1) EP0205955B1 (en)
AT (1) ATE55168T1 (en)
DE (1) DE3522423C1 (en)
SE (1) SE458220B (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3942287A1 (en) * 1989-12-21 1991-07-04 Rudolf Thomas Stahlbau Gmbh & Tilting mast locking mechanism - has locking pin with stops, engaging bores in hollow foot, and fixed shoe
FR2684127B1 (en) * 1991-11-22 1994-02-25 Petitjean Sa TIPPING MAT.
DE4205487C1 (en) * 1992-02-22 1993-07-29 Rudolf 5200 Siegburg De Thomas Tipping mast esp. for light emitting mast - has tipped device including piston-cylinder unit which via claw shaped holder with downwardly open recesses fits onto bearing bolt of mast foot
NL1003089C2 (en) * 1996-05-10 1997-11-18 Standbouw En Onderhoudsbedrijf Mast foot for e.g. advertisement mast
FR2811360B1 (en) * 2000-07-07 2003-02-07 Dauphin Affichage METHOD AND DEVICE FOR DRESSING AND HOLDING IN A VERTICAL OR SUBSTANTIALLY VERTICAL POSITION A MAT FOR SUPPORTING A DISPLAY STRUCTURE
US7585253B2 (en) 2007-01-17 2009-09-08 Kirk Richards Pole vault training device
GB0700847D0 (en) * 2007-01-17 2007-02-21 Corus Uk Ltd Folding column
GB0917582D0 (en) * 2009-10-07 2009-11-25 Pudsey Diamond Engineering Ltd Energy collector mast
GB2551772B (en) * 2016-06-30 2019-05-29 Abacus Lighting Ltd A column and a column assembly

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1714698A (en) * 1926-11-08 1929-05-28 Frank M Stoll Latch mechanism for hinge members
DE1434644A1 (en) * 1962-12-12 1968-12-19 Karl Goller Kg Maschinenfabrik Mast for lights
NL176485C (en) * 1972-04-25 1985-04-16 Abacus Eng Ltd MECHANISM FOR ESTABLISHING OR IRONING A STREET LIGHTING POLE OR THE LIKE.
NL7306503A (en) * 1973-05-10 1974-11-12
GB2063346B (en) * 1979-09-18 1983-03-30 Concrete Utilities Locking mechanism for hinged lighting column
DE8518207U1 (en) * 1985-06-22 1985-11-07 Rudolf Thomas Stahlbau GmbH & Co KG, 5200 Siegburg Tilting mast construction

Also Published As

Publication number Publication date
ATE55168T1 (en) 1990-08-15
SE8602719L (en) 1986-12-23
DE3522423C1 (en) 1986-11-06
EP0205955A2 (en) 1986-12-30
SE8602719D0 (en) 1986-06-18
SE458220B (en) 1989-03-06
EP0205955A3 (en) 1987-09-30

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