EP1951972B1 - Articulated mast for a thick-matter delivery installation - Google Patents
Articulated mast for a thick-matter delivery installation Download PDFInfo
- Publication number
- EP1951972B1 EP1951972B1 EP06818647A EP06818647A EP1951972B1 EP 1951972 B1 EP1951972 B1 EP 1951972B1 EP 06818647 A EP06818647 A EP 06818647A EP 06818647 A EP06818647 A EP 06818647A EP 1951972 B1 EP1951972 B1 EP 1951972B1
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- EP
- European Patent Office
- Prior art keywords
- mast
- articulated
- mast section
- section
- sections
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
- E04G21/04—Devices for both conveying and distributing
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
- E04G21/04—Devices for both conveying and distributing
- E04G21/0418—Devices for both conveying and distributing with distribution hose
- E04G21/0436—Devices for both conveying and distributing with distribution hose on a mobile support, e.g. truck
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/8593—Systems
- Y10T137/8807—Articulated or swinging flow conduit
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T403/00—Joints and connections
- Y10T403/32—Articulated members
- Y10T403/32114—Articulated members including static joint
- Y10T403/32213—Articulate joint is a swivel
Definitions
- the present invention relates to a articulated mast comprising a plurality of pivotally interconnected mast sections, according to the preamble of claim 1.
- Such articulated mast is already out of the document JP-A-2225146 known.
- conveyor systems are used to overcome height differences, in which the thick material to be conveyed is conveyed by a delivery line or a piping system to the desired application point.
- the delivery pressure or delivery volume flow is generated here by a slurry pump.
- a common design principle of such conveyors is the combination of the piping system with a buckling and / or telescopic mast, which is mounted for example on a truck.
- a conveyor system but also be constructed stationary or designed as manipulators. In the event that such a conveyor system is mounted on a truck, this is initially aligned horizontally at the site and secured against tipping.
- the sludge pump then conveys the externally provided thick material through a piping system, which is arranged along the mast sections, to the desired discharge point, at the thick matter, for example, by a trunk-like tube extension emerges from the piping system.
- the surmountable height differences are considerable and can be 50 m and more.
- conveyors and horizontal distances can be overcome, for example. In rough or inaccessible terrain.
- the individual mast sections of the articulated mast are typically connected to each other by means of pivot bearings or pivot joints.
- the actuating forces are applied in a known manner, for example by hydraulic cylinders, wherein the hydraulic cylinder is arranged between two adjacent by means of the pivot joint mast sections connected.
- the extension and retraction of the piston rod leads to a pivoting movement of a mast section relative to the other, at this time usually fixed-position mast section.
- the entire articulated mast or mast structure is attached to a so-called mast block and rotatably mounted on this about a vertical axis.
- the mast section arranged on the mast block is typically referred to as the first mast section, and the following mast arm sections are counted consecutively.
- Most often articulated masts have two, three or four individual mast sections and are accordingly referred to as two-, three- or four-member articulated masts.
- the object of the invention is to reduce the resulting shear forces and bending moments on a articulated mast to keep the design effort low.
- the task solution should also bring economic advantages over the prior art.
- the mast section to be guided Due to the inclination of the swivel joint axis with which the mast section to be guided is mounted with its one end on the immediately preceding mast section, it is achieved that this mast section is led away laterally in the resting or transport position of the articulated mast from the preceding articulated mast, ie at the connecting one Swivel joint spreads.
- the two longitudinal axes of the respective mast sections intersect approximately in the pivot joint and include a spread angle ⁇ . If the mast section is swiveled out of its rest or transport position into a working position, these are directed extending in a vertical reference plane extending substantially perpendicular to the first mast section.
- the inclination of the swivel joint axis can be detected by means of an inclination angle ⁇ , this angle being determined relative to a vertical line of the longitudinal axis of a preceding mast section, typically to that of the first mast section attached to the mast trestle.
- the skew angle can be detected to simplify this in a horizontal plane.
- the skew angle ⁇ should not be greater than 22.5 °, preferably not greater than 15 °, more preferably not greater than 10 ° and particularly preferably not greater than 8 °, otherwise the resulting spread angle ⁇ and thus the torsional moments occurring (or. Shear forces) are too large.
- the skew angle ⁇ of the tilted pivot axis can advantageously be determined in a horizontal plane occupying a vertical position to the vertical reference plane. In this case, only the flat share, ie recorded the angular projection of the inclination in the horizontal plane, in which any inclination shares are not taken into account.
- the articulated mast comprises more than two mast sections, it is advantageous to use a splayed, i.e. laterally led away mast section subsequent third mast section, also with an inclined pivot axis store, so that the splayed and mounted by means of the pivot joint (with inclined swivel joint axis) mast section in the unfolded working position of the articulated mast are aligned substantially in the vertical reference plane, but in the folded-rest or transport position of the subsequent mast section is arranged substantially parallel to the mast section preceding the splayed mast section.
- the skew angles ⁇ and ⁇ ' have approximately the same angle values. This reduces the manufacturing effort when setting the joint holes, but also facilitates the previous kinematic calculations. Furthermore, this ensures that the mast section following the splayed mast section in the retracted rest or transport position is arranged essentially parallel to the mast section preceding the splayed mast section.
- the articulated mast comprises more than two mast sections, for example four mast sections
- the mast section spread apart in the rest position, counted from the mast mounting on the mast block is the second or third mast section.
- the first and second mast sections are then arranged one above the other in the resting or transport position, while the two following mast sections are arranged laterally offset, whereby an advantageous weight distribution is achieved in the rest position.
- the longitudinal axis of the splayed away laterally guided mast section with the longitudinal axis of the preceding mast section forms a spread angle ⁇ , which is also simplistic defined as a plane angle in a horizontal plane.
- the spread angle ⁇ has approximately twice the angular value of the skew angle ⁇ of the tilted pivot axis, i.
- the mathematical relations apply: ⁇ ⁇ 2 ⁇ ⁇ or ⁇ ⁇ / 2.
- the two angles of spread ⁇ and ⁇ ' i. the angles between the longitudinal axes of the splayed and its preceding mast section and between the longitudinal axes of the splayed and its subsequent mast section, approximately the same angle value.
- both spread angles ⁇ and ⁇ 'to have different angle values.
- the articulated mast can already be optimized in the construction in view of the later expected applications such that the maximum possible pivot angle ⁇ between two adjacent mast sections significantly less than 180 °, for example, only 90 °, or significantly more than 180 °, for example 220 °.
- a respective respective pivot end position of the individual mast sections can be determined constructively, for example by stops in the pivot joints or by using hydraulic cylinders with corresponding stroke lengths. This can reduce weight and costs.
- the ideal state of joint alignment of the individual pole sections must be by these are aligned within the vertical reference plane to be matched to this expected use case.
- the mast sections of a articulated mast regardless of the individually maximum possible pivoting angles, when unfolding into a working position must adopt an aligned position in which they are aligned within the vertical reference plane.
- FIG. 1 shows an example of a prior art designated 1 articulated mast or mast assembly in working position, which is pivotally mounted on a mast block 2, wherein the mast 2 can typically rotate about a vertical axis (z-direction).
- the girder 2 can be mounted, for example, on a truck, not shown, a concrete truck, or even be mounted on a stationary system.
- the articulated mast 1 sets composed of individual mast sections or mast arms 4 to 7 arranged one behind the other.
- the illustrated articulated mast 1 is a four-membered mast structure.
- a pivot joint 8 connects two adjacent mast sections.
- the four-membered mast structure shown therefore comprises three pivot joints 8, plus a fourth pivot joint 8a via which the mast assembly itself is articulated on the mast block 2.
- the other components such as the concrete conveyor line and its attachment means or the hydraulic swing cylinder and their connecting lines and the like. Not shown.
- the third mast section 6 has a cranking designated by 9, by which the rear part 61 of the third mast section and the subsequent fourth mast section 7 are laterally offset by an amount d.
- a cranking designated by 9 By the crank 9 come now when folding the articulated mast 1 from its working position in the rest or transport position, the individual mast sections partially side by side lying in the end position and it can therefore be achieved a largely compact Einfaltwolf due to the crank.
- the articulated mast 1 is transferred to its transport or rest position, in which the fourth mast section 7 under the third mast section 6, the third mast section. 6 on the second mast section 5 and the second mast section 5 under the first mast section 4 is folded.
- the second mast section 5 and the third mast section 6 are thus arranged below the first mast section 4, wherein the lowermost third mast section 6 emerges laterally from the stack at its offset 9 and the fourth mast section 7 rests on its offset rear mast section 61.
- the goal is the reduction of stacking height, on the other hand an optimization with regard to the center of gravity.
- FIG. 2 shows the possible embodiment of a pivot joint 8 in a perspective view, by means of which two adjacent mast sections, here by way of example denoted by A and B, are pivotally connected to each other.
- the mast section A has an end bifurcation 10, in which the rod-like end piece of the adjacent mast section B is accommodated.
- the lateral inner surfaces of the Endgabelung 10 serve here as a guide to prevent tilting against the pivoting direction.
- the fixation of the two connected mast sections A and B by a hinge pin or pivot pin 11 (see. FIG. 3 ), which is disposed within a hinge socket or bore 15, from the in FIG. 2 only the joint eye 12 is visible.
- the two interconnected exemplary mast sections A and B can perform a pivoting movement about a pivot axis 13.
- the pivot axis 13 is identical to the center line of the hinge pin 11 and the center line of the hinge bush 15 and perpendicular to the common center line 14.
- the current position of the two mast sections A and B to each other can be described with a pivot angle ⁇ .
- FIG. 3 shows the articulated mast joint of FIG. 2 viewed in partial section from a vertical direction (from above against the z-direction according to FIG. 1 ).
- the hinge pin 11 for both mast sections A and B is within a hinge bushing or bore 15 is arranged and secured in a known manner.
- the tail of the mounted mast section B is aligned and guided transversely to the pivot direction, so that the two mast sections A and B are always aligned along a common longitudinal axis 14 regardless of a current pivot angle.
- the pivot axis 13 and the common longitudinal axis 14 are always at right angles to each other.
- FIG. 4 shows the pivot 8 of the FIG. 2 and 3 in a side view, ie according to FIG. 1 viewed from a horizontal direction.
- the two pivotally interconnected mast sections A and B take here a pivot angle ⁇ of 180 ° to each other, whereby the respective mast sections are maximally spaced from each other.
- the maximum swing angle is often less or more than 180 °.
- the maximum swing angle can be determined by design measures, for example. By means of end stops in the pivot joint or by the maximum stroke length of the actuating hydraulic cylinder.
- FIG. 5 shows the embodiment of the invention with a pivot joint 81 with inclined pivot axis 131.
- the pivot angle ⁇ is approximately 180 °, wherein the two mast sections A and B are aligned in this position as shown in Figure 5 along a common longitudinal axis 14.
- the hinge hole 151 is here designed so that its center line corresponding to the pivot axis 131, a non-perpendicular angle to the common longitudinal axis 14 occupies.
- FIG. 6 schematically shows in a perspective view of an unfolded articulated mast according to FIG. 1 with a total of four mast sections 4 to 7. Viewed from a vertical direction (counter to the z-axis of the space coordinate system), all four mast sections 4 to 7 are arranged in alignment along a common longitudinal axis 14, as in FIG Figure 7a shown. Perpendicular to this common longitudinal axis 14, but at least perpendicular to the longitudinal axis of the first mast section 4, a vertical plane can be spanned, which can be referred to as a vertical reference plane 16. In the example shown the FIG. 6 the vertical reference plane runs only at random along the y-axis of the space coordinate system.
- a articulated mast 1 which comprises a swivel joint 81 with an inclined swivel joint axis 131 (according to the example of FIGS FIG. 5 ), pivoted about this inclined pivot axis 131 pivoted, the exemplary mast section B corresponding bucking mast section moves obliquely to the vertical reference plane 16, wherein the skew continuously changes during the pivoting movement. Only in a predetermined position position, which can be described for example by the pivot angle ⁇ to the previous mast section, these two mast sections are within the vertical reference plane 16, ie in an ideal aligned working position.
- the articulated mast section When folding the articulated mast from its working into its resting or transport position, the articulated mast section pivoted about the inclined pivot axis 131, corresponding to the exemplary mast section B, spreads in an angle of spread ⁇ from the preceding mast section, ie is guided away laterally therefrom.
- the mast section B corresponding buckling mast section substantially elongated, that can be formed without cranking, thereby eliminating the disadvantages associated with the cranking.
- the mast sections can be made correspondingly less rigid, which reduces weight, manufacturing costs and costs.
- FIGS. 7a and 7b illustrate the example of a four-member articulated mast 1, which position the third, in this case not cranked mast section 6 in the working position ( Figure 7a ) and in the resting or transport position ( FIG. 7b ) occupies.
- the third mast section 6 is aligned with the preceding mast sections 4 and 5 along a common longitudinal axis 14 due to the inclined pivot axis 131, and thus also within the vertical reference plane 16 (see. FIG. 6 ).
- the same mast section 6 is due to the inclined pivot axis 131 of its preceding mast section 5 in a spread angle ⁇ . As a result, this is guided past the preceding mast section, taken exactly away from this.
- the inclination of the pivot axis 131 thus avoids the disadvantages associated with the crank 9 disadvantages. This saves material and weight and reduces manufacturing costs.
- the Figure 7a further clarifies the definition of the plane inclination angle ⁇ and ⁇ ', the oblique pivot axes 131 occupy to the perpendicular of a common longitudinal axis 14, wherein the common longitudinal axis 14 corresponds to at least one extension of the longitudinal axis of the first mast section (4).
- the skew angles ⁇ and ⁇ ' are determined for simplicity in a horizontal plane, this horizontal plane extending by definition perpendicular to the vertical reference plane 16.
- the pivot axes 13 of a conventional pivot joint 8, according to the embodiment of the FIGS. 2 to 4 also correspond to the vertical of the common longitudinal axis 14.
- the skew angle ⁇ typically corresponds to half the spread angle ⁇ (see FIG. FIG. 7b ), with the proviso that the passed swivel angle ⁇ of the mast sections connected by means of this swivel joint 81 during folding and unfolding corresponds to approximately 180 °.
- skew angle ⁇ and ⁇ 'results from the input or Ausklapp flood the respective mast sections.
- the embodiment of FIG. 5 has a game, in the form of a gap between the tail of the mast section B and the Endgabelung 10 of the mast section A.
- a Guide arrangement 17 is provided, which also provides the side guide surfaces also required for this pivot joint.
- a first guide surface of such a guide arrangement may for example be formed integrally with the fork 10 of the mast section A, the corresponding mating surface may be formed integrally with the rod-like end piece of the mast section B.
- the guide assembly 17 may also be constructed of a plurality of spacers having correspondingly shaped inclined surfaces. Other embodiments are possible.
- the skew angle ⁇ and ⁇ ' should not exceed a maximum value of 10 °, preferably of 8 °. This results in an approximately twice as large spread angle ⁇ or ⁇ ', which proves to be practicable value at present.
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Forklifts And Lifting Vehicles (AREA)
- Jib Cranes (AREA)
- Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
- Spray Control Apparatus (AREA)
- Framework For Endless Conveyors (AREA)
- Ship Loading And Unloading (AREA)
Abstract
Description
Die vorliegende Erfindung betrifft einen Knickmast der mehrere schwenkbar miteinander verbundene Mastabschnitte umfasst, gemäß dem Oberbegriff des Anspruches 1. Ein solcher Knickmast ist schon aus dem Dokument
Bei der Förderung von Dickstoffen, beispielsweise Beton, Mörtel und dgl., werden zur Überwindung von Höhendifferenzen so genannte Förderanlagen eingesetzt, bei denen der zu fördernde Dickstoff durch eine Förderleitung bzw. ein Rohrleitungssystem zu der gewünschten Ausbringungsstelle gefördert wird. Der Förderdruck bzw. Fördervolumenstrom wird hierbei durch eine Dickstoffpumpe erzeugt. Ein gängiges Bauprinzip solcher Förderanlagen ist die Kombination des Rohrleitungssystems mit einem Knick- und/oder Teleskopmast, der beispielsweise auf einem Lastfahrzeug montiert ist. Selbstverständlich kann eine solche Förderanlage aber auch stationär aufgebaut oder als Manipulatoren ausgeführt sein. Für den Fall, dass eine solche Förderanlage auf einem Lastfahrzeug montiert ist, wird dieses am Einsatzort zunächst horizontal ausgerichtet und gegen Kippen gesichert. Erst danach können die einzelnen Mastabschnitte bzw. Mastarme des Knickmastes ausgeklappt bzw. ausgefahren und die Förderanlage in Betrieb genommen werden. Die Dickstoffpumpe fördert dann den extern bereit gestellten Dickstoff durch ein Rohrleitungssystem, das entlang der Mastabschnitte angeordnet ist, zu der gewünschten Ausbringstelle, an der der Dickstoff bspw. durch einen rüsselartigen Schlauchfortsatz aus dem Rohrleitungssystem austritt. Die überwindbaren Höhendifferenzen sind beträchtlich und können 50 m und mehr betragen. Selbstverständlich können mit solchen Förderanlagen auch horizontale Distanzen überwunden werden, bspw. in unwegsamen oder unzugänglichen Geländen.In the promotion of thick materials, such as concrete, mortar and the like., So-called conveyor systems are used to overcome height differences, in which the thick material to be conveyed is conveyed by a delivery line or a piping system to the desired application point. The delivery pressure or delivery volume flow is generated here by a slurry pump. A common design principle of such conveyors is the combination of the piping system with a buckling and / or telescopic mast, which is mounted for example on a truck. Of course, such a conveyor system but also be constructed stationary or designed as manipulators. In the event that such a conveyor system is mounted on a truck, this is initially aligned horizontally at the site and secured against tipping. Only then can the individual mast sections or boom arms of the articulated mast be unfolded or extended and the conveyor system put into operation. The sludge pump then conveys the externally provided thick material through a piping system, which is arranged along the mast sections, to the desired discharge point, at the thick matter, for example, by a trunk-like tube extension emerges from the piping system. The surmountable height differences are considerable and can be 50 m and more. Of course, with such conveyors and horizontal distances can be overcome, for example. In rough or inaccessible terrain.
Die einzelnen Mastabschnitte des Knickmastes sind typischerweise mittels Schwenklager bzw. Schwenkgelenke miteinander verbunden. Die Stellkräfte werden in bekannter Weise bspw. durch Hydraulikzylinder aufgebracht, wobei der Hydraulikzylinder zwischen zwei benachbarten mittels des Schwenkgelenks miteinander verbundener Mastabschnitte angeordnet ist. Das Aus- und Einfahren der Kolbenstange führt zu einer Schwenkbewegung des eines Mastabschnittes relativ zu dem anderen, zu diesem Zeitpunkt üblicherweise lagefixierten Mastabschnitt.The individual mast sections of the articulated mast are typically connected to each other by means of pivot bearings or pivot joints. The actuating forces are applied in a known manner, for example by hydraulic cylinders, wherein the hydraulic cylinder is arranged between two adjacent by means of the pivot joint mast sections connected. The extension and retraction of the piston rod leads to a pivoting movement of a mast section relative to the other, at this time usually fixed-position mast section.
Der gesamte Knickmast bzw. Mastaufbau ist an einem sogenannten Mastbock befestigt und an diesem um eine vertikale Achse drehbar gelagert. Der am Mastbock angeordnete Mastabschnitt wird typischerweise als erster Mastabschnitt bezeichnet, die ihm nachfolgenden Mastarmabschnitte werden fortlaufend gezählt. Am häufigsten weisen Knickmaste zwei, drei oder vier einzelne Mastabschnitten auf und werden demgemäß als zwei-, drei- oder viergliedrige Knickmaste bezeichnet.The entire articulated mast or mast structure is attached to a so-called mast block and rotatably mounted on this about a vertical axis. The mast section arranged on the mast block is typically referred to as the first mast section, and the following mast arm sections are counted consecutively. Most often articulated masts have two, three or four individual mast sections and are accordingly referred to as two-, three- or four-member articulated masts.
Beim Einklappen der Mastabschnitte aus einer Betriebstellung in eine Transport- bzw. Ruhestellung besteht in der Regel aus Platzgründen das Problem, dass einer der Mastabschnitte, insbesondere der dritte eines viergliedrigen Knickmastes, beim Zusammenklappen seitlich am vorausgehenden bzw. vorhergehenden Mastabschnitt vorbei geführt werden muss, weil dieser zur Vermeidung einer unvorteilhaften Stapelhöhe nicht unmittelbar unterhalb des vorhergehenden Mastabschnitts platziert werden kann. Dies kann auch beim zweiten Mastabschnitt der Fall sein, falls dieser beim Einklappen am ersten Mastabschnitt oder an sonstigen Aufbauten vorbei geführt werden muss. Aus diesem Grund sind die betreffenden Mastabschnitte gekröpft ausgebildet, womit das Vorbeiführen des Mastabschnitts ermöglicht wird.When folding the mast sections from a working position into a transport or rest position usually for reasons of space, the problem that one of the mast sections, in particular the third of a four-unit articulated mast, when folding laterally on the preceding or previous mast section must be performed over, because this can not be placed immediately below the previous mast section to avoid unfavorable stacking height. This may also be the case with the second mast section, if it has to be guided past the first mast section or other superstructures during folding. For this reason, the respective mast sections are formed cranked, which allows the passage of the mast section.
Aufgrund der Kröpfung ergibt sich im ausgeklappten Zustand eine Verlagerung der Schwerpunktlinie des betreffenden Mastabschnittes. Die Kröpfung bedingt jedoch auch eine seitliche Gewichtverlagerung der dem gekröpften Mastabschnitt nachfolgenden Mastabschnitte, einschließlich der Schwenkgelenke und der an den Mastabschnitten befestigten Förderleitungsabschnitte. Im Ausgeklappten Zustand wirken daher hohe Querkräfte, die in den einzelnen Mastabschnitten auch Torsionsmomente hervorrufen (die aus den Torsionsmomenten resultierenden Spannungen sind insbesondere im Bereich der Kröpfung extrem hoch) und insbesondere in den Schwenkgelenken und im Bereich der Befestigung des Knickmasts am Mastbock zu hohen Biege- bzw. Kippmomenten führen. Daher müssen die einzelnen Mastabschnitte und Schwenkgelenke, aber auch die Befestigung des Knickmasts am Mastbock entsprechend stabil ausgelegt werden, was natürlich einen konstruktiven Aufwand mit sich bringt. Zudem wirkt sich der hohe konstruktive Aufwand nachteilig auf das entsprechende Gewicht des Knickmastes aus.Due to the cranking results in the unfolded state, a shift of the centroid of the relevant mast section. However, the cranking also requires lateral weight shifting of the mast sections following the cranked mast section, including the pivot joints and the conveyor line sections attached to the mast sections. In the unfolded state, therefore, high transverse forces, which also cause torsional moments in the individual mast sections (the stresses resulting from the torsional moments are extremely high, in particular in the region of the cranking) and in particular in the pivot joints and in the region of attachment of the kink mast to the high girder. or overturning moments. Therefore, the individual mast sections and pivot joints, but also the attachment of the articulated mast on Mastbock must be designed to be stable, which of course brings a design effort with it. In addition, the high design effort has a detrimental effect on the corresponding weight of the articulated mast.
Aufgabe der Erfindung ist es, die entstehenden Querkräfte und Biegemomente an einem Knickmast zu verringern, um den konstruktiven Aufwand gering halten zu können. Die Aufgabenlösung soll zudem gegenüber dem bekannten Stand der Technik wirtschaftliche Vorteile bringen.The object of the invention is to reduce the resulting shear forces and bending moments on a articulated mast to keep the design effort low. The task solution should also bring economic advantages over the prior art.
Die Aufgabenstellung wird gelöst durch die Merkmale des kennzeichnenden Teils des Anspruches 1. Die Merkmale der rückbezogenen Unteransprüche geben sinnvolle Weiterbildungen und Ausgestaltungen an.The problem is solved by the features of the characterizing part of claim 1. The features of the related subclaims indicate meaningful developments and refinements.
Durch die Schrägstellung der Schwenkgelenkachse, mit der der vorbeizuführende Mastabschnitt mit seinem einem Ende an dem unmittelbar vorausgehenden Mastabschnitt gelagert ist, wird erreicht, dass dieser Mastabschnitt in der Ruhe- bzw. Transportstellung des Knickmastes von dem vorausgehenden Knickmast seitlich weggeführt wird, d.h. sich am verbindenden Schwenkgelenk abspreizt. Die beiden Längsachsen der betreffenden Mastabschnitte schneiden sich in etwa im Schwenkgelenk und schließen einen Spreizwinkel α ein. Werden die Mastabschnitt aus ihrer Ruhe- bzw. Transportstellung in eine Arbeitsstellung geschwenkt, richten diese sich in einer vertikalen Referenzebene, die sich im Wesentlichen lotrecht zum ersten Mastabschnitt erstreckt, aus.Due to the inclination of the swivel joint axis with which the mast section to be guided is mounted with its one end on the immediately preceding mast section, it is achieved that this mast section is led away laterally in the resting or transport position of the articulated mast from the preceding articulated mast, ie at the connecting one Swivel joint spreads. The two longitudinal axes of the respective mast sections intersect approximately in the pivot joint and include a spread angle α. If the mast section is swiveled out of its rest or transport position into a working position, these are directed extending in a vertical reference plane extending substantially perpendicular to the first mast section.
Lediglich im Zustand des Ausklappens bzw. des Einklappens wirken auf den Knickmast verhältnismäßig geringe Querkräfte, wodurch insgesamt nur kleine Torsions- und Biegemomente auf die Mastabschnitte und den Mastaufbau einwirken. Die betroffenen Baukomponenten können dem geringeren Lastfall gemäß kleiner dimensioniert werden, wodurch das Gewicht, aber auch die Material- und Herstellungskosten des Knickmastes reduziert werden.Only in the state of unfolding or collapsing act on the articulated mast relatively low lateral forces, causing a total of only small torsional and bending moments acting on the mast sections and the mast structure. The construction components involved can be dimensioned smaller in accordance with the lower load case, whereby the weight, but also the material and manufacturing costs of the articulated mast are reduced.
Beim Ausklappen eines Mastabschnitts um eine schräggestellte Schwenkgelenkachsen herum, nähern sich die mittels Schwenkgelenk verbundenen Mastabschnitte mit zunehmendem Schwenkwinkel dem idealen Zustand einer gemeinsamen fluchtenden Ausrichtung an, indem diese innerhalb der vertikalen Referenzebene ausgerichtet sind. Jedoch wird auch in nicht-idealen Ausrichtungszuständen hinsichtlich der resultierenden Querkräfte eine deutliche Verbesserung gegenüber dem Stand der Technik erzielt.When unfolding a mast section about an inclined pivot axis, the pivotally connected mast sections approach the ideal state of co-alignment with increasing pivot angle by being aligned within the vertical reference plane. However, a significant improvement over the prior art is achieved even in non-ideal alignment states with respect to the resulting transverse forces.
Die Schrägstellung der Schwenkgelenkachse kann mittels eines Schrägstellungswinkels β erfasst werden, wobei dieser Winkel bezogen auf eine Senkrechte der Längsachse eines vorausgehenden Mastabschnitts, typischerweise auf die des ersten am Mastbock befestigten Mastabschnitts, bestimmt wird. Der Schrägstellungswinkel kann hierzu vereinfachend in einer horizontalen Ebene erfasst werden. Der Schrägstellungswinkel β sollte nicht größer als 22,5°, bevorzugt nicht größer als 15°, besonders bevorzugt nicht größer als 10° und insbesondere bevorzugt nicht größer als 8° sein, da sonst die resultierenden Spreizwinkel α und damit die auftretenden Torsionsmomente (bzw. Querkräfte) zu groß sind.The inclination of the swivel joint axis can be detected by means of an inclination angle β, this angle being determined relative to a vertical line of the longitudinal axis of a preceding mast section, typically to that of the first mast section attached to the mast trestle. The skew angle can be detected to simplify this in a horizontal plane. The skew angle β should not be greater than 22.5 °, preferably not greater than 15 °, more preferably not greater than 10 ° and particularly preferably not greater than 8 °, otherwise the resulting spread angle α and thus the torsional moments occurring (or. Shear forces) are too large.
Der Schrägstellungswinkel β der schräggestellten Schwenkgelenkachse kann vorteilhaft in einer horizontalen Ebene bestimmt werden, die eine senkrechte Lage zur vertikalen Referenzebene einnimmt. In diesem Fall wird nur der ebene Anteil, d.h. die Winkelprojektion der Schrägsstellung in die horizontale Ebene erfasst, bei der etwaige Neigungsanteile nicht berücksichtigt sind.The skew angle β of the tilted pivot axis can advantageously be determined in a horizontal plane occupying a vertical position to the vertical reference plane. In this case, only the flat share, ie recorded the angular projection of the inclination in the horizontal plane, in which any inclination shares are not taken into account.
Falls der Knickmast mehr als zwei Mastabschnitte umfasst, ist es vorteilhaft, einen dem abgespreizten d.h. seitlich weggeführten Mastabschnitt nachfolgenden dritten Mastabschnitt, ebenfalls mit einer schräggestellten Schwenkgelenkachse zu lagern, sodass der abgespreizte und der daran mittels des Schwenkgelenks (mit schräggestellter Schwenkgelenkachse) gelagerte Mastabschnitt in der ausgeklappten Arbeitsstellung des Knickmastes zwar im Wesentlichen in der vertikalen Referenzebene ausgerichtet sind, jedoch in der eingeklappten Ruhe- bzw. Transportstellung der nachfolgende Mastabschnitt im Wesentlichen parallel zu dem dem abgespreizten Mastabschnitt vorausgehenden Mastabschnitt angeordnet ist.If the articulated mast comprises more than two mast sections, it is advantageous to use a splayed, i.e. laterally led away mast section subsequent third mast section, also with an inclined pivot axis store, so that the splayed and mounted by means of the pivot joint (with inclined swivel joint axis) mast section in the unfolded working position of the articulated mast are aligned substantially in the vertical reference plane, but in the folded-rest or transport position of the subsequent mast section is arranged substantially parallel to the mast section preceding the splayed mast section.
In dem vorausgehend dargelegten Fall mehrerer schräggestellter Schwenkgelenkachsen ist es vorteilhaft, dass die Schrägstellungswinkel β und β' näherungsweise gleiche Winkelwerte aufweisen. Dies reduziert den Fertigungsaufwand beim Setzen der Gelenkbohrungen, erleichtert aber auch die vorausgehenden kinematischen Berechnungen. Ferner ist dadurch sichergestellt, dass der in der eingeklappten Ruhe- bzw. Transportstellung dem abgespreizten Mastabschnitt nachfolgende Mastabschnitt im Wesentlichen parallel zu dem dem abgespreizten Mastabschnitt vorausgehenden Mastabschnitt angeordnet ist.In the case of a plurality of inclined swivel joint axes set out above, it is advantageous that the skew angles β and β 'have approximately the same angle values. This reduces the manufacturing effort when setting the joint holes, but also facilitates the previous kinematic calculations. Furthermore, this ensures that the mast section following the splayed mast section in the retracted rest or transport position is arranged essentially parallel to the mast section preceding the splayed mast section.
Für den praktisch häufig anzutreffenden Fall, dass der Knickmast mehr als zwei Mastabschnitte umfasst, bspw. vier Mastabschnitt, ist es vorteilhaft, dass der in Ruhestellung abgespreizte, seitlich weggeführte Mastabschnitt von der Mastbefestigung am Mastbock aus gezählt, der zweite oder dritte Mastabschnitt ist. Im letzteren Fall sind dann in der Ruhe- bzw. Transportstellung der erste und zweite Mastabschnitt übereinander angeordnet, während die beiden folgenden Mastabschnitt seitlich versetzt angeordnet sind, wodurch eine vorteilhafte Gewichtsverteilung in der Ruhestellung erreicht wird.For the practically frequently encountered case that the articulated mast comprises more than two mast sections, for example four mast sections, it is advantageous that the mast section spread apart in the rest position, counted from the mast mounting on the mast block, is the second or third mast section. In the latter case, the first and second mast sections are then arranged one above the other in the resting or transport position, while the two following mast sections are arranged laterally offset, whereby an advantageous weight distribution is achieved in the rest position.
In der Ruheposition bildet die Längsachse des abgespreizten seitlich weggeführten Mastabschnitts mit der Längsachse des vorausgehenden Mastabschnitts einen Spreizwinkel α, der ebenfalls vereinfachend als ebener Winkel in einer horizontalen Ebene definiert ist. Der Spreizwinkel α weist ungefähr den doppelten Winkelwert des Schrägstellungswinkels β der schräggestellten Schwenkgelenkachse auf, d.h. es gelten die mathematischen Beziehungen: α ≈2·β bzw. β ≈α/2.In the rest position, the longitudinal axis of the splayed away laterally guided mast section with the longitudinal axis of the preceding mast section forms a spread angle α, which is also simplistic defined as a plane angle in a horizontal plane. The spread angle α has approximately twice the angular value of the skew angle β of the tilted pivot axis, i. The mathematical relations apply: α ≈2 · β or β ≈α / 2.
Damit, wie zuvor beschrieben, ein dem abgespreizten und damit seitlich weggeführten Mastabschnitt nachfolgenden dritten Mastabschnitt in der Ruhe- bzw. Transportstellung des Knickmastes parallel zu dem dem abgespreizten Mastabschnitt vorausgehenden Mastabschnitt angeordnet ist, müssen die beide Spreizwinkel α und α', d.h. die Winkel zwischen den Längsachsen des abgespreizten und dessen vorausgehenden Mastabschnitts und zwischen den Längsachsen des abgespreizten und dessen nachfolgenden Mastabschnitt, annährend den gleichen Winkelwert aufweisen. Jedoch ist es auch möglich, dass beide Spreizwinkel α und α' unterschiedliche Winkelwerte aufweisen.In order, as described above, to arrange a third mast section following the splayed and thus laterally guided mast section in the resting or transport position of the articulated mast parallel to the mast section preceding the splayed mast section, the two angles of spread α and α ', i. the angles between the longitudinal axes of the splayed and its preceding mast section and between the longitudinal axes of the splayed and its subsequent mast section, approximately the same angle value. However, it is also possible for both spread angles α and α 'to have different angle values.
Der ideale Zustand einer gemeinsamen fluchtenden Ausrichtung der einzelnen Mastabschnitte eines Knickmastes, indem diese innerhalb der vertikalen Referenzebene ausgerichtet sind, setzt nicht voraus, dass die maximalen Schwenkwinkel γ zwischen je zwei schwenkbar miteinander verbundener Mastabschnitte einen Winkelwert von 180° aufweisen. Der Knickmast kann bereits bei der Konstruktion im Hinblick auf die später zu erwartenden Anwendungsfälle derart optimiert werden, dass die maximal möglichen Schwenkwinkel γ zwischen je zwei benachbarten Mastabschnitten deutlich weniger als 180°, beispielsweise nur 90° betragen, oder deutlich mehr als 180°, beispielsweise 220° betragen. Eine jeweilige entsprechende Schwenk-Endposition der einzelnen Mastabschnitte kann konstruktiv festgelegt werden, beispielsweise durch Anschläge in den Schwenkgelenken oder durch Verwendung von Hydraulikzylindern mit entsprechenden Hublängen. Damit können Gewicht und Kosten reduziert werden. Ist eine, oder sind mehrere schräggestellte Schwenkgelenkachsen im Knickmast vorgesehen, so muss der ideale Zustand der gemeinsamen fluchtenden Ausrichtung der einzelnen Mastabschnitte, indem diese innerhalb der vertikalen Referenzebene ausgerichtet sind, auf diesen zu erwartenden Anwendungsfall abgestimmt werden. In anderen Worten formuliert müssen die Mastabschnitte eines Knickmastes, unabhängig von den individuell maximal möglichen Schwenkwinkeln, beim Ausklappen in eine Arbeitsstellung eine fluchtende Position einnehmen, in der diese innerhalb der vertikalen Referenzebene ausgerichtet sind.The ideal state of a common alignment of the individual mast sections of a articulated mast by these are aligned within the vertical reference plane, does not assume that the maximum pivoting angle γ between each two pivotally interconnected mast sections have an angle value of 180 °. The articulated mast can already be optimized in the construction in view of the later expected applications such that the maximum possible pivot angle γ between two adjacent mast sections significantly less than 180 °, for example, only 90 °, or significantly more than 180 °, for example 220 °. A respective respective pivot end position of the individual mast sections can be determined constructively, for example by stops in the pivot joints or by using hydraulic cylinders with corresponding stroke lengths. This can reduce weight and costs. If one or more inclined pivot axes are provided in the articulated mast, then the ideal state of joint alignment of the individual pole sections must be by these are aligned within the vertical reference plane to be matched to this expected use case. In other words, the mast sections of a articulated mast, regardless of the individually maximum possible pivoting angles, when unfolding into a working position must adopt an aligned position in which they are aligned within the vertical reference plane.
Ein Ausführungsbeispiel des Knickmastes soll nachfolgend anhand der Figuren näher beschrieben und erläutert werden. Darin zeigen:
- Figur 1
- einen Knickmast nach dem Stand der Technik in perspektivischer Ansicht;
Figur 2- ein Schwenkgelenk eines Knickmastes nach
Figur 1 in perspektivischer Darstellung; - Figur 3
- ein
Schwenkgelenk gemäß Figur 2 im Teilschnitt; Figur 4- ein
Schwenkgelenk gemäß Figur 2 in einer Seitenansicht; Figur 5- ein Schwenkgelenk mit schräggestellter Schwenkgelenkachse im Teilschnitt;
Figur 6- eine vereinfachte, schematische Darstellung eines gemäß
Figur 1 ausgeklappten Knickmastes, in einer perspektivischen Ansicht; - Figur 7a
- eine schematische Darstellung des Knickmastes gemäß
Figur 6 , von oben betrachtet; - Figur 7b
- eine schematische Darstellung des Knickmastes gemäß
Figur 6 im Ruhe- bzw. Transportzustand, von oben betrachtet.
- FIG. 1
- a buckling mast of the prior art in a perspective view;
- FIG. 2
- a swivel joint of a articulated mast after
FIG. 1 in perspective view; - FIG. 3
- a pivot joint according to
FIG. 2 in partial section; - FIG. 4
- a pivot joint according to
FIG. 2 in a side view; - FIG. 5
- a swivel joint with an inclined swivel joint axis in partial section;
- FIG. 6
- a simplified, schematic representation of a according to
FIG. 1 unfolded articulated mast, in a perspective view; - Figure 7a
- a schematic representation of the articulated mast according to
FIG. 6 viewed from above; - FIG. 7b
- a schematic representation of the articulated mast according to
FIG. 6 in the resting or transport state, viewed from above.
In eingeklappter Ruhe- bzw. Transportstellung des Knickmastes 1 ist es aus Platzgründen erforderlich, in Abhängigkeit der Länge einzelner Mastabschnitte bzw. aufgrund notwendiger Aufbauten auf dem Chassis des Betonförderfahrzeugs, dass wenigstens ein Mastabschnitt seitlich versetzt zu den anderen Mastabschnitten angeordnet wird und damit seitlich an einem anderen Mastabschnitt vorbei geführt werden muss. Diese Maßnahme dient auch zu Absenkung des Fahrzeugschwerpunktes. Im Ausführungsbeispiel gemäß
Der Knickmast 1 wird in seine Transport- bzw. Ruhestellung überführt, in dem der vierte Mastabschnitt 7 unter dem dritten Mastabschnitt 6, der dritte Mastabschnitt 6 auf den zweiten Mastabschnitt 5 und der zweite Mastabschnitt 5 unter den ersten Mastabschnittes 4 geklappt wird. In der Transportstellung sind somit der zweite Mastabschnitt 5 und der dritte Mastabschnitt 6 unterhalb des ersten Mastabschnittes 4 angeordnet, wobei der unterste dritte Mastabschnitt 6 an seiner Kröpfung 9 seitlich aus dem Stapel heraustritt und auf dessen versetzten hinteren Mastabschnitt 61 der vierte Mastabschnitt 7 aufliegt. Hierbei handelt es sich nur um eine exemplarische Anordnung, die je nach Ausführung des Knickmastes abweichend sein kann. Ziel ist einerseits die Reduktion von Stapelhöhe, andererseits aber auch eine Optimierung hinsichtlich des Schwerpunktes.The articulated mast 1 is transferred to its transport or rest position, in which the
Wie aus
Bei dem bisher beschriebenen Stand der Technik besteht das Problem, dass die Kröpfung beim Ausklappen und maßgeblich in der Arbeitsstellung des Knickmastes hohe gewichtsbedingte Querkräfte hervorruft, die sich aus dem seitlichen Versatz der Mastabschnitte um den Betrag d (gemäß
Die
Der komplizierte Bewegungsablauf beim Ein- und Ausklappen des Knickmastes 1 kann vereinfacht anhand der
Bei einem Knickmast mit Schwenkgelenken herkömmlicher Ausführung gemäß des Beispiels der
Bei einem Knickmast 1, der ein Schwenkgelenk 81 mit schräggestellter Schwenkgelenkachse 131 umfasst (gemäß dem Beispiel der
Die
Während bei der Kröpfung die Querkräfte permanent voll wirksam sind, also auch beim Ein- und Ausklappen des Knickmastes 1, verringern sich bei der erfindungsgemäßen Lösung mit schräggestellten Schwenkgelenkachse 131 die von dem abgespreizten Mastabschnitt herrührenden Querkräfte während des Ausklappvorgangs kontinuierlich und sind in der idealen Arbeitsstellung praktisch nicht mehr vorhanden. Mit dem erfindungsgemäßen Knickmast 1 tritt demnach gegenüber dem Stand der Technik hinsichtlich der Querkräfte und der daraus resultierenden Momente auch dann eine deutliche Verbesserung ein, wenn der Knickmast in einer Mastabschnittsanordnung betrieben wird, die nicht der idealen Arbeitsstellung entspricht.While in the cranking the lateral forces are permanently fully effective, including when folding and unfolding the articulated mast 1, decrease in the inventive solution with tilted
Da dem dritten Mastabschnitt 6 in dem Beispiel der
Die
Der Schrägstellungswinkel β entspricht typischerweise dem halben Spreizwinkel α (vgl.
Da es gemäß obiger Ausführungen zweckdienlich ist, einen dem abgespreizten Mastabschnitt nachfolgenden Mastabschnitt ebenfalls mittels einer schräggestellten Schwenkgelenkachse 131 zu lagern, sollten in diesem Fall idealerweise die beiden Schrägstellungswinkel β und β' den selben Winkelwert aufweisen, wie in
Die Orientierung der Schrägstellungswinkel β und β' ergibt sich aus der Ein- bzw. Ausklappfolge der betreffenden Mastabschnitte. Typischerweise sind die Schrägstellungswinkel β und β' gleich orientiert, können jedoch auch eine unterschiedliche Orientierung aufweisen.The orientation of the skew angle β and β 'results from the input or Ausklappfolge the respective mast sections. Typically, skew angles β and β 'are oriented the same, but may also have a different orientation.
Schließlich sollte noch betont werden, dass die Schwenkgelenke 81 mit schräggestellter Schwenkgelenkachse 131 insgesamt auf den veränderten Schwenkmechanismus ausgelegt werden müssen. Das Ausführungsbeispiel der
Für eine praxisgerechte Ausführung eines Knickmastes 1 mit schräggestellter Schwenkgelenkachse bzw. schräggestellten Schwenkgelenkachsen 131, sollten die Schrägstellungswinkel β und β' einen Maximalwert von 10°, bevorzugt von 8° nicht übersteigen. Dies ergibt eine etwa doppelt so großen Spreizwinkel α bzw. α', was sich derzeit als praktikabler Wert erweist.For a practical design of a articulated mast 1 with inclined pivot axis or inclined pivot axes 131, the skew angle β and β 'should not exceed a maximum value of 10 °, preferably of 8 °. This results in an approximately twice as large spread angle α or α ', which proves to be practicable value at present.
Claims (8)
- Articulated mast (1) for a thick-matter delivery installation, in particular for a concrete-delivery installation, having at least two mast sections (A, B) which extend substantially along a longitudinal axis (14) and are connected by means of a swivel joint (8), wherein a second mast section (B) can be swivelled relative to an immediately preceding first mast section (A) from a folded resting or transport position of the articulated mast (1) in which the mast is partially guided laterally past the preceding first mast section (A) into an unfolded working position, characterised in that the second mast section (B) partially guided past laterally is mounted by one end to the immediately preceding first mast section (A) by way of an inclined swivel joint axle (131) in such a way that in the unfolded working position of the articulated mast (1) the two mast sections (A, B) are substantially aligned in a vertical reference plane (16) which is perpendicular to the preceding first mast section, and in the folded transport position the second mast section (B) which is guided past is deflected from the preceding first mast section (A) at a defined spread angle (α).
- Articulated mast (1) as claimed in Claim 1, characterised in that the inclined swivel joint axle (131) forms an angle of inclination (β) with a perpendicular to the longitudinal axis (14) of the first mast section (A) or the extension thereof, the said angle of inclination being a maximum of 0°, preferably a maximum of 8°, the angle of inclination (β) being determined in a horizontal plane.
- Articulated mast (1) as claimed in Claim 1 or 2, characterised in that at the other end of the partially laterally deflected (second) mast section (B) a subsequent third mast section is mounted by way of a likewise inclined swivel joint axle (131) in such a way that in the unfolded working position of the articulated mast (1) the laterally deflected second and the subsequent third mast section are substantially aligned in the vertical reference plane, and in the folded transport position the subsequent third mast section is disposed substantially parallel to the preceding first mast section (B), wherein the longitudinal axis of the laterally deflected second mast section describes a second spread angle (α') with the longitudinal axis of the subsequent third mast section.
- Articulated mast (1) as claimed in Claim 3, characterised in that the spread angle (α) is approximately twice as great as the angle of inclination (β) and that the second spread angle (α') is approximately twice as great as a corresponding second angle of inclination (β').
- Articulated mast (1) as claimed in Claim 3, characterised in that the angles of inclination (β, β') for both inclined swivel joint axles (131) are the same and in particular have an angle value in accordance with Claim 2.
- Articulated mast (1) as claimed in any one of the preceding claims, characterised in that that the articulated mast (1) comprises at least three mast sections, wherein the laterally deflected mast section, counting from the mast fixing, is the second (5), in particular the third (6) mast section.
- Articulated mast as claimed in any one of the preceding claims, characterised in that the working position of the articulated mast (1) in which the mast sections are aligned substantially in a vertical reference plane (16) is designed so that respective end positions are assigned to each of the individual mast sections for the swivelling movements thereof.
- Thick-matter delivery installation, in particular a concrete-delivery installation, having at least one pump for delivering thick matter and a thick-matter delivery line which is disposed on an articulated mast (1), wherein the articulated mast (1) is constructed from mast sections (4, 5, 6, 7) connected to one another by articulation, characterised by an articulated mast (1) as claimed in any one of the preceding claims.
Applications Claiming Priority (2)
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DE102005055667A DE102005055667B4 (en) | 2005-11-22 | 2005-11-22 | Articulated mast for a thick matter conveying system |
PCT/EP2006/011079 WO2007059904A1 (en) | 2005-11-22 | 2006-11-17 | Articulated mast for a thick-matter delivery installation |
Publications (2)
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EP1951972A1 EP1951972A1 (en) | 2008-08-06 |
EP1951972B1 true EP1951972B1 (en) | 2009-09-30 |
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EP06818647A Not-in-force EP1951972B1 (en) | 2005-11-22 | 2006-11-17 | Articulated mast for a thick-matter delivery installation |
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US (1) | US8251095B2 (en) |
EP (1) | EP1951972B1 (en) |
KR (1) | KR101059033B1 (en) |
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Publication number | Priority date | Publication date | Assignee | Title |
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DE102008027233A1 (en) | 2008-06-06 | 2009-12-10 | Schwing Gmbh | Joint bolt as part of a thick matter pipe |
IT1398899B1 (en) * | 2010-03-12 | 2013-03-21 | Cifa Spa | CONCRETE DISTRIBUTION ARM AND ITS CONSTRUCTION PROCEDURE |
DE102010027635B4 (en) * | 2010-07-19 | 2019-12-05 | Schwing Gmbh | Joint bolt connection for mast joints in a articulated mast of a concrete pump |
DE102011018267A1 (en) * | 2011-04-20 | 2012-10-25 | Schwing Gmbh | Apparatus and method for thick matter, in particular concrete conveying with rotation angle measurement |
CN102674214B (en) * | 2012-05-25 | 2015-06-17 | 徐州重型机械有限公司 | Overhead working engineering machine and side foldable boom thereof |
CN103410326B (en) * | 2013-08-20 | 2016-04-20 | 中联重科股份有限公司 | Transition joint arm, manufacturing method thereof, folding arm support and material distribution equipment |
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US531121A (en) * | 1894-12-18 | hofbeck | ||
US2296250A (en) * | 1939-01-05 | 1942-09-22 | Autogiro Co Of America | Aircraft with sustaining rotors |
US3009646A (en) * | 1958-09-11 | 1961-11-21 | Purtell Rufus Judson | Irrigation pipe moving system |
FR1443948A (en) * | 1965-03-24 | 1966-07-01 | Advanced folding bicycle | |
JPH076292B2 (en) | 1990-01-12 | 1995-01-30 | 極東開発工業株式会社 | Multi-stage boom device for fluid transfer |
DE19644412A1 (en) * | 1996-10-25 | 1998-04-30 | Putzmeister Ag | Concrete placing boom for concrete pumps |
EP1117883B1 (en) * | 1998-09-28 | 2003-03-26 | PUTZMEISTER Aktiengesellschaft | Auto concrete pump |
DE19959070A1 (en) * | 1999-12-08 | 2001-06-13 | Putzmeister Ag | Distribution boom for concrete pumps |
DE10106427B4 (en) * | 2001-02-12 | 2006-06-22 | Schwing Gmbh | Distributor device for thick materials, in particular for concrete |
US6942235B2 (en) * | 2003-12-01 | 2005-09-13 | Wen-Pin Chang | Foldable bicycle |
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2005
- 2005-11-22 DE DE102005055667A patent/DE102005055667B4/en not_active Expired - Fee Related
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2006
- 2006-11-17 BR BRPI0619212-2A patent/BRPI0619212A2/en not_active IP Right Cessation
- 2006-11-17 WO PCT/EP2006/011079 patent/WO2007059904A1/en active Search and Examination
- 2006-11-17 AU AU2006316895A patent/AU2006316895B2/en not_active Ceased
- 2006-11-17 KR KR1020087014914A patent/KR101059033B1/en not_active IP Right Cessation
- 2006-11-17 EP EP06818647A patent/EP1951972B1/en not_active Not-in-force
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- 2006-11-17 US US12/094,594 patent/US8251095B2/en not_active Expired - Fee Related
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DE102005055667B4 (en) | 2009-02-12 |
CA2630509A1 (en) | 2007-05-31 |
BRPI0619212A2 (en) | 2011-09-20 |
AU2006316895A1 (en) | 2007-05-31 |
WO2007059904A1 (en) | 2007-05-31 |
DE502006005002D1 (en) | 2009-11-12 |
CA2630509C (en) | 2011-03-29 |
DE102005055667A1 (en) | 2007-05-31 |
ES2310162T1 (en) | 2009-01-01 |
AU2006316895B2 (en) | 2010-07-01 |
CN101313116A (en) | 2008-11-26 |
KR101059033B1 (en) | 2011-08-24 |
ATE444420T1 (en) | 2009-10-15 |
CN101313116B (en) | 2013-04-17 |
US20090028633A1 (en) | 2009-01-29 |
EP1951972A1 (en) | 2008-08-06 |
US8251095B2 (en) | 2012-08-28 |
KR20080080319A (en) | 2008-09-03 |
ES2310162T3 (en) | 2010-01-08 |
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