EP1354842B1 - Telescopic crane - Google Patents

Telescopic crane Download PDF

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Publication number
EP1354842B1
EP1354842B1 EP03014531A EP03014531A EP1354842B1 EP 1354842 B1 EP1354842 B1 EP 1354842B1 EP 03014531 A EP03014531 A EP 03014531A EP 03014531 A EP03014531 A EP 03014531A EP 1354842 B1 EP1354842 B1 EP 1354842B1
Authority
EP
European Patent Office
Prior art keywords
boom
guying
telescopic
brace
tensioning
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
EP03014531A
Other languages
German (de)
French (fr)
Other versions
EP1354842A3 (en
EP1354842A2 (en
Inventor
Michael Dipl.-Ing. Irsch
Walter Dipl.-Ing. Stowasser
Frank Dipl.-Ing. Conrad
Oliver Dr.-Ing. Fries
Jens Dipl.-Ing. Fery
Roland Dipl.-Ing. Kuhn
Walter Zimmer
Markus Marx
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tadano Demag GmbH
Original Assignee
Terex Demag GmbH and Co KG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
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Application filed by Terex Demag GmbH and Co KG filed Critical Terex Demag GmbH and Co KG
Priority to DE20023369U priority Critical patent/DE20023369U1/en
Priority claimed from EP00250210A external-priority patent/EP1065166B2/en
Publication of EP1354842A2 publication Critical patent/EP1354842A2/en
Publication of EP1354842A3 publication Critical patent/EP1354842A3/en
Application granted granted Critical
Publication of EP1354842B1 publication Critical patent/EP1354842B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/62—Constructional features or details
    • B66C23/64—Jibs
    • B66C23/70—Jibs constructed of sections adapted to be assembled to form jibs or various lengths
    • B66C23/701—Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic
    • B66C23/702—Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic with a jib extension boom
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/62—Constructional features or details
    • B66C23/82—Luffing gear
    • B66C23/821—Bracing equipment for booms
    • B66C23/823—Bracing equipment acting in vertical direction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/62—Constructional features or details
    • B66C23/82—Luffing gear
    • B66C23/821—Bracing equipment for booms
    • B66C23/825—Bracing equipment acting in horizontal direction

Definitions

  • the invention relates to a telescopic crane with an undercarriage, an upper carriage rotatably arranged thereon, a counterweight and a jib.
  • the boom includes a main boom with a basic box and at least one telescopic section that can be pushed in and out.
  • the invention also relates to a method for bracing a boom of a telescopic crane.
  • a boom of a telescopic crane of the aforementioned type can also include an auxiliary boom in addition to the telescopic main boom, which is to be rigidly or luffably attached to the main boom.
  • a telescopic crane with such a "superlift” is known for example from DE 31 13 763 A1.
  • the luffing plane is the plane in which the boom moves when it is pivoted about its horizontal pivot axis.
  • the luffing plane is therefore perpendicular to the swivel or luffing axis of the boom.
  • the free end of this known guy bracket is connected to the end of one of the telescopic sections and the foot of the main boom by means of ropes or rope strands.
  • the guy stand consists of struts which are spaced apart on both sides of the basic box and extend upwards and are rigidly connected to one another. It is also stated that the guy stand can be folded onto the basic box in a transport position. The connection between the guy stand and the boom foot is also proposed to be unchangeable in length.
  • a winch arrangement is provided in order to change the length of the cable provided between the guy stand and the telescopic boom.
  • a control device for the winches can be provided for applying a predetermined cable force to the guy stand and the guy devices connected to it.
  • a realized telescopic crane with guy stand for carrying out a superlift operation is also known, for example, from the company brochure: Mannesmann Demag printechnik, Demag AC 1600, 04/96, pages 5, 17 and 27 or also from DE 38 40 408 C2.
  • a guy stand is to be placed on the base box, which has an almost unchangeable tensioning with the foot area of the main boom on the one hand and with another tensioning , which is usually changed in length, with the head or collar one of the inner telescopic shots connected on the other hand.
  • This stiffening arrangement can be used for the basic device alone, but also in connection with the arrangement of a rigid or luffing jib formed from lattice mast parts.
  • a mobile crane with telescopic boom which comprises a guy stand
  • the angle of the guy stand with respect to the vehicle which determines the angle of the boom via the guy ropes, can be changed by means of a piston-cylinder arrangement in order to raise or lower the boom.
  • This piston-cylinder arrangement is pivotally inserted between a turntable and the head of the guy stand. This configuration is intended to ensure that the guy ropes can be kept taut without the use of a winch when the boom base point is pivoted with a constant length of the boom.
  • a handlebar and the guy stand can be pivoted simultaneously and independently of one another.
  • DE 93 11 778 U1 also shows a mobile crane with a telescopic boom and a guy support articulated on the back of the foot area of the outer telescopic tube of the telescopic boom.
  • This guy support in turn takes on the function of a guy stand mentioned above.
  • the mobile crane can easily be brought into the condition of the crane operation and into its transport condition.
  • the telescopic boom consists of two parts which can be bolted to one another, each of which has an outer tube from which at least one telescopic section can be telescoped.
  • the mobile crane known from DE 196 06 109 A1 also includes a guy stand.
  • the guy stand is braced by a rope or by a linkage of a predetermined length with respect to the superstructure, the foot point or the articulation axis of an articulation shot or the lower region of the articulation shot.
  • a winch is in the area of the top of the Guy frames arranged. The winch is used to pretension the guy rope according to the angle of the articulation section and the extended state of the telescopic sections with constant force when the crane is not loaded.
  • a mobile crane with telescopic boom and anchoring bracket pivotally attached to it in the luffing plane is also known from DE 38 40 408 A1.
  • the guy stand is set up and held by a hydraulic piston-cylinder unit.
  • DE 198 02 187 A1 also shows a telescopic crane with a superlift.
  • a rigidly attached auxiliary boom is attached to the telescopic main boom.
  • the front free end of an anchoring of the superlift is attached to the auxiliary boom. This changes the force and torque relationships in the main boom extension and superlift system in such a way that the main boom is relieved.
  • the telescopic boom can be braced in the luffing level.
  • US 5,803,279 shows a telescopic boom with an automatically adjustable guy stand.
  • the guy stand automatically rises. In the erected position, deflection of the boom in the luffing plane is reduced in the manner described above.
  • the telescopic boom shown here comprises a rope which engages at the lower end of the boom and is guided in the manner of a guy stand via a device which is assigned to the main body and is adjustable in its angular position.
  • the aim of the return rope used as guy rope, which is used to pull in the various telescopic sections of such a telescopic boom, is to have a stabilizing effect on the boom exercise and, in particular, to prevent an inadmissible deflection of the telescopic boom.
  • the linkage which takes over the function of a guy stand can be pivoted about a pivot point on the telescopic boom or its basic box.
  • a piston-cylinder device is available for installation.
  • this linkage in the rocking plane can be changed in its angular position in relation to the telescopic boom.
  • this configuration is intended to reduce deflection of the boom in the luffing plane.
  • the change in the angular position of the boom should obviously enable the retracting rope to be pulled as close as possible to the main boom when retracting the telescopic sections so as to keep friction losses low. Only in the case that the return rope is used as a guy rope, a steeper position of the linkage with the return rope then guided on the free head end of the linkage is sensible.
  • DE 29 17 829 A1 shows a mobile crane with telescopic boom, which is pivotably articulated on a rotatable superstructure.
  • the lifting capacity of the crane is to be increased by providing a receiving and lifting device for an additional counterweight arranged on the superstructure of the mobile crane.
  • the receiving and lifting device can have a rearward protruding support, which is expediently directed obliquely backwards and upwards and can be lowered for receiving the additional counterweight.
  • a similar mobile crane with telescopic boom is described in DE 31 39 853 A1.
  • a counterweight is provided, which by means of a superstructure on the vehicle attached mast, which is placed to the rear and its inclination can be changed, can be brought to a suitable radius.
  • the unloading of the counterweight can be controlled depending on the change in the center of gravity of the device due to the pivoting of the boom.
  • DE 38 38 975 C2 also shows a telescopic crane with a swing-out mast for a counterweight attached to a hanging device.
  • the mast can be erected by a mast cylinder supported on the superstructure.
  • the mast itself has a telescopic extension, at the tip of which there is a pivot point for a variable-length suspension device and a variable-length guy device for the variable-length boom.
  • This crane boom consists of a single torsionally rigid support body with a preferably circular cross section.
  • the supporting body is over and / or under tension.
  • all-round overvoltage is provided, which is done with spars.
  • one or more star girders are provided on the crane boom, and the spars are attached to their radially outer ends. This stem support and the spars form a spatially fixed bracing on the crane boom.
  • DE 31 05 771 A1 discloses a tower crane, the tower of which is attached to a rotating platform connected to the undercarriage via a rotary connection. At the upper end of the tower is an outrigger braced by guy ropes and supports counterweight attached to the platform.
  • the tower and the boom consist of at least two tubes connected to one another in the region of their ends with axially approximately aligned center lines. On the top of the boom, at least in the area of the tower, two supports are arranged in a V-shape and in mirror image to their vertical plane of symmetry.
  • At least two guy ropes fastened with their front ends in the outer area of the boom run via attachment points on the outer ends of the supports to the outer ends of a back support attached to the upper end of the tower and fastened to the boom by a guy rope.
  • the tubes forming the tower can be telescoped into one another and braced against one another in their extended, still partially encasing position.
  • a trolley can be moved back and forth on the jib, as is usual with top-slewing cranes.
  • Such a tower crane should be able to be manufactured from lattice mast elements with less effort than known tower cranes.
  • a boom with horizontal rope bracing is known from DE 37 34 919 A1.
  • the swiveling boom shown here has a plurality of traverses that run parallel to the swivel axis and are braced via ropes.
  • the boom design shown is ultimately nothing more than a braced beam with fixed crossbeams.
  • this type of boom is provided for support frames that can be moved on caterpillars, for example.
  • a boom of a crane for container operation is known from DE 1 531 155.
  • a luffing jib of a double link luffing crane is disclosed, in which there are two beak-like expandable arms which form the outer part of the jib and which carry two top rollers or top roller groups.
  • the arms can be locked in such a spread position in which the distance that the centers of the two rolls or groups of rolls have from one another is approximately equal to the distance between the centers of the lifting rope slings carrying the container crossbar.
  • the two arms are in the coupled together stiffened against each other and are positively and shear-proof connected.
  • the spreadable arms themselves are, as already explained, braced against bending via a guy stand.
  • the technical problem on which the invention is based is to provide a telescopic crane which can take up an increased load capacity, especially in the steep positions of the jib.
  • a technical problem on which the invention is based is to provide a method for bracing a telescopic boom of a telescopic crane, so that increased loads, in particular in steep positions of the boom, can be absorbed with such a boom.
  • a telescopic crane which comprises an undercarriage, an upper carriage rotatably arranged thereon, a counterweight and a boom which has a main boom with a basic box and at least one telescopic section which can be pushed in and out.
  • a telescopic boom is not only stiffened in the luffing plane, as is the case with the long-known guy frame or superlift, but also in deformation planes lying outside the luffing plane, which means that particularly in steep positions of the telescopic boom compared to the previous Superlift, the payloads are significantly increased the otherwise unchanged telescopic boom can be accommodated.
  • An exemplary embodiment of the present invention provides that the foot ends of the guy supports are arranged on a support lying transversely to the longitudinal axis of the boom and projecting beyond it.
  • Another exemplary embodiment of the present invention provides that the free head end of each guy support via a first tensioning means optionally with the superstructure, the undercarriage, the foot area of the boom, a fixed or separately guided counterweight or the counterweight in the direction of the foot end of the boom and over one further clamping means is connected to a selected point of the main boom or part of a boom extension in the direction of the head end of the boom.
  • each guy support is connected to the head or collar of one of the inner telescopic sections via a tensioning means.
  • each guy support can also be connected to a part of a rigid or luffing auxiliary boom formed from lattice mast parts via a tensioning means.
  • An exemplary embodiment of the present invention provides that the length of each guy support can be changed.
  • the length of each guy support can, for example, be changed in steps or continuously.
  • the tensioning means are designed as a rope and / or as a rod.
  • An exemplary embodiment of the present invention provides that the clamping means cooperates with a clamping device.
  • a tensioning device can be, for example, a separately controllable tensioning device for the tensioning means of each guy support.
  • such a tensioning device can be arranged on the guy support, on the superstructure, on the undercarriage, on the main boom, on the counterweight or on a boom extension.
  • the tensioning device is designed as a winch or piston-cylinder unit.
  • a change in inclination of a guy support can be used to tension the associated tensioning means.
  • the guy supports are arranged on the top of the boom.
  • a pair of guy supports are arranged on the main boom in the area of the basic box.
  • the pair of guy supports are arranged in the front area between the linkage of a luffing cylinder and a front bearing on the basic box.
  • An exemplary embodiment of the present invention provides that the foot ends of the guy supports are connected to the boom in the transition region between the upper side and the respective side wall of the base box.
  • the angle enclosed by the two guy supports of a pair of guy supports can be changed.
  • the angle enclosed between the two guy supports can be adjusted in steps or continuously by pivoting the guy supports.
  • the guy supports are each connected to a piston-cylinder unit.
  • each guy support has two spars lying approximately in parallel.
  • a winch for tensioning the tensioning means can then be arranged between the bars of the respective guy supports.
  • auxiliary boom attached to the head of the innermost telescopic section, which is formed from lattice mast parts.
  • a luffing auxiliary boom formed from lattice mast parts with at least one luffing support.
  • a further exemplary embodiment of the present invention provides that a measuring means is provided for detecting the lateral deformation of the boom, which is linked in terms of control to a tensioning device influencing the degree of tension of the lateral guying.
  • the lateral deformation can be detected directly or indirectly via crane sizes, such as rope tension, rope length, rope elongation and the forces acting on the jib, in the form of the wind from the side, the solar radiation and the temperatures prevailing on the main jib.
  • a method is proposed by means of which a telescopic boom with a basic box and at least one telescopic section that can be swung in and out can be braced such that lateral forces can also be absorbed.
  • at least one of the guying supports of a pair of guying supports is arranged on the jib cantilevered to the luffing plane.
  • Each guy support of the pair of guy supports is also connected to a tensioning means that extends essentially in the longitudinal direction of the boom.
  • An exemplary embodiment of the method according to the invention provides that the two guy supports are pivoted above the boom in order to set the angle enclosed between the guy supports.
  • the free head end of the guy support is optionally connected to the superstructure, the undercarriage, the foot region of the boom, a fixed or separately guided counterweight or the floor in the direction of the foot end of the boom via a first tensioning means and another Clamping means connected to a selected point on the main boom or part of a boom extension in the direction of the head end of the boom.
  • each guy support can be connected to the head or collar of one of the inner telescopic sections via a tensioning means.
  • An alternative embodiment of the present invention provides that the free head end of each guy support is connected via a tensioning means to a part of a rigid or luffing jib made of lattice boom parts.
  • the length of each guy support is changed stepwise or continuously in order to tension the tensioning means.
  • An alternative embodiment provides that a change in the inclination of a guy support is used to tension the associated tensioning means.
  • Another exemplary embodiment of the method according to the invention provides that the tensioning means is tensioned with a tensioning device.
  • each guy support can be tensioned by means of a separately controllable tensioning device.
  • the guy supports are set up by means of piston-cylinder units.
  • each guy support is pivoted laterally by means of a piston-cylinder loading time.
  • a method according to the invention can be designed such that the lateral deformation of the cantilever is determined with the aid of a measuring device and the tensioning device influencing the degree of tension of the lateral guying is controlled accordingly.
  • an embodiment of the method according to the invention is designed such that the lateral deformation is detected directly or indirectly via crane sizes, as mentioned above.
  • At least two guy supports inclined with respect to the luffing plane are arranged on the boom, each of which is connected to a tensioning means running essentially in the longitudinal direction of the boom, the inclination of the guy supports being selected such that the lateral load acting on the boom partially or completely absorbed by the guying.
  • the guy support can be inclined transversely to the longitudinal direction or in the longitudinal direction or overlapping transversely to and in the longitudinal direction of the boom.
  • two inclined guy supports are provided on the top of the respective boom element, the angle inclination of both guy supports being the same in the normal case. However, it can also vary depending on the direction of the forces acting on the boom.
  • the foot ends of both guy supports can be connected to the top of the boom at a common location, but also offset from one another.
  • the foot end of at least one guy support is connected to the boom in the transition region between the upper side or the respective side wall.
  • the proposed arrangement has the advantage that, depending on the angular position of the guy supports, the portion of the guy force that acts in the lateral direction can be changed continuously or continuously.
  • the effective clamping force is divided into a superlift operation component and a component lateral guying.
  • the two guy supports In the second extreme position, ie in the horizontal position, the two guy supports only provide reinforcement in both lateral directions.
  • the respective free head end of the guy support is connected to the undercarriage, the uppercarriage, the foot area of the boom, the fixed or separately guided counterweight or the floor in the direction of the foot end of the boom via a first clamping device and via a further clamping device to a selected point on the boom Connected towards the boom head.
  • the respective desired angular position of the guy supports can be adjusted gradually or continuously by pivoting the guy supports. This also enables an asymmetrical angle setting. This means that with an applied lateral force only on one side the respective guy support is inclined more in the direction of the side guy, while the second guy support remains in a central position.
  • the tensioning means can be designed as a rope or as a rod.
  • the clamping means or the clamping means can be arranged with and without pretension. In the case of a pretension and an adjustable degree of tension, the tensioning means cooperates with a tensioning device. This is preferably a winch or a piston-cylinder unit. But also the angle adjustment and / or the length change of the guy support can be used in the sense of a tensioning device.
  • the tensioning devices can be arranged on the guy supports, on the boom, on the superstructure or undercarriage or on the counterweight.
  • the guy supports are preferably arranged on the main boom in the area of the basic box, in particular in the front area between the articulation of the luffing cylinder and the front bearing.
  • each guy support is preferably connected to a piston-cylinder unit supported on the basic box.
  • the guy support has two spars, between which the winch can be arranged.
  • the equipment of the telescopic boom can be supplemented with the arrangement of a rigid or luffing auxiliary boom formed from lattice mast parts.
  • the proposed lateral guying can also be attached to these cantilever elements.
  • Lateral bracing can be used particularly effectively if the crane is equipped with a measuring device to record the lateral deformation of the boom. If the deformation exceeds a specified permissible value, the clamping device connected to the guying is activated and the guying is re-tensioned.
  • the degree of lateral deformation can be determined directly or indirectly via crane sizes. For example, these are rope tension, rope length and rope elongation. However, a statement can also be made about the degree of lateral deformation via the forces acting on the boom in the form of the wind arising from the side, the solar radiation and the temperatures prevailing in the boom.
  • FIGS. 1a-c the possible arrangement of a guy support inclined with respect to the luffing plane is shown as a basic sketch.
  • the guy support 2 is preferably arranged on the top 3 of a cantilever element 1 shown here symbolically.
  • This boom element 1 can be a basic box or a shot of a main boom of a telescopic crane or the lattice boom element of a rigid or luffing jib.
  • the center axis 4 drawn in the boom element 1 is ideally also the luffing plane of the boom.
  • the guy support 2 is inclined at an angle ⁇ > 0 with respect to the luffing plane.
  • the dashed representation of the guy support 2 ' is intended to clarify that the guy support 2 can also be inclined towards the other side.
  • the free end 5 of the guy support 2 is connected to a tensioning means 6, 7, preferably a rope.
  • a tensioning means 6, 7 is connected to a tensioning means 6, 7, with a fixed point arranged on the boom or a tensioning device such as a piston-cylinder unit or winch. Clamping of the clamping means 6, 7 can also be achieved without a clamping device. Firstly, in such a way that the clamping means 6, 7 are arranged at a smaller or larger angle ⁇ and then the guy support 2 is further inclined. Alternatively, it is also possible to make the guy support 2 telescopic and to achieve a degree of tension by changing the length.
  • Part b shows the possibility of inclining the guy support 2 in the other plane at an angle ⁇ > 0.
  • Part c shows the possibility of inclining the guy support 2 overlapping in both planes.
  • the possibility is shown to arrange at least one foot end 8.1 outside the cantilever element 1.
  • there is a here on top 3 right-hand extending bracket 10 is arranged, at the end of which is the foot end 8.1 of the guy support 2.1 which tilts to the right here.
  • the carrier 11 projects over on both sides, so that both foot ends 8.1, 8.2 of the two guy supports 2.1.2, 2 lie outside the cantilever element 1.
  • FIG. 4 A special case is shown in Figure 4.
  • the transverse beam 12 itself forms the two guy supports extending to the right and to the left.
  • This special form can be deduced mentally if the two inclination angles ⁇ 1 and ⁇ 2 are increased to 90 ° in FIG. 2.
  • the boom element is a basic box 13 of a main boom of a telescopic crane.
  • a piston-cylinder unit 28.1, 28.2 is provided as the set-up aid, which is arranged at one end on the side wall 25 and at the other end in the half area of the respective guy support 18.1.
  • One end of the tensioning means is attached to the head region of the guy support 18.1 by means of a rope thimble 31.1. From there it runs to the deflection point arranged in the direction of the jib head (also not shown here) and runs back over a deflection roller 30.1 arranged in the head region of the guy support 18.1 and from there to the winch 27.1.
  • a guy clip 32.1 is arranged, which represents the rear securing for the respective guy support 18.1.

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  • Mechanical Engineering (AREA)
  • Jib Cranes (AREA)

Description

Die Erfindung betrifft einen Teleskopkran mit einem Unterwagen, einem drehbar darauf angeordneten Oberwagen, einem Gegengewicht und einem Ausleger. Der Ausleger umfasst einen Hauptausleger mit einem Grundkasten und mindestens einen darin ein- und ausschiebbaren Teleskopschuss. Außerdem betrifft die Erfindung ein Verfahren zum Abspannen eines Auslegers eines Teleskopkrans.The invention relates to a telescopic crane with an undercarriage, an upper carriage rotatably arranged thereon, a counterweight and a jib. The boom includes a main boom with a basic box and at least one telescopic section that can be pushed in and out. The invention also relates to a method for bracing a boom of a telescopic crane.

Der guten Ordnung halber ist anzumerken, dass ein Ausleger eines Teleskopkranes der zuvor genannten Art neben dem teleskopierbaren Hauptausleger auch einen Hilfsausleger umfassen kann, der am Hauptausleger starr oder wippbar zu befestigen ist.For the sake of good order, it should be noted that a boom of a telescopic crane of the aforementioned type can also include an auxiliary boom in addition to the telescopic main boom, which is to be rigidly or luffably attached to the main boom.

HINTERGRUND DER ERFINDUNGBACKGROUND OF THE INVENTION

Teleskopkrane sind im ausgefahrenen Zustand je nach Anstellwinkel unterschiedlich großen Belastungen ausgesetzt. In Steilstellung ist oftmals die seitliche Verformung des Hauptauslegers das traglastbegrenzende Kriterium. Bei einem flachen bzw. mittleren Anstellwinkel sind die in der Einspannung der ausgefahrenen Teleskopschüsse auftretenden Belastungen ein wesentliches Kriterium für die maximale Traglast. Für den letztgenannten Belastungsfall ist als Momentenentlastung des sogenannten Superliftbetriebs entwickelt worden.When extended, telescopic cranes are exposed to loads of different sizes depending on the angle of attack. In the steep position, the lateral deformation of the main boom is often the criterion that limits the load capacity. With a flat or medium angle of attack, the loads occurring in the clamping of the extended telescopic sections are an essential criterion for the maximum load. For the latter load case, the so-called superlift operation has been developed to relieve the moment.

Ein Teleskopkran mit einem solchen "Superlift" ist beispielsweise aus der DE 31 13 763 A1 bekannt. Hier ist im Bereich der Anlenkung eines Wippzylinders für den Hauptausleger ein Abspannbock am Grundkasten angelenkt, der sich im Betrieb quer zum Ausleger nach oben abstehend in der sogenannten Wippebene erstreckt. Anzumerken ist, dass die Wippebene diejenige Ebene ist, in der sich der Ausleger bewegt, wenn er um seine horizontale Schwenkachse verschwenkt wird. Die Wippebene steht also senkrecht zur Schwenk- bzw. Wippachse des Auslegers. Das freie Ende dieses bekannten Abspannbocks ist über Seile oder Seilstränge mit dem Ende eines der Teleskopschüsse und dem Fuß des Hauptauslegers verbunden. Eine Detaillösung sieht vor, dass der Abspannbock aus beidseitig vom Grundkasten beabstandeten, sich nach oben erstreckenden Streben besteht, die starr miteinander verbunden sind. Ferner ist ausgeführt, dass der Abspannbock in eine Transportstellung an den Grundkasten anklappbar ist. Die Verbindung zwischen Abspannbock und Auslegerfuß wird auch als in der Länge unveränderbar vorgeschlagen. Darüber hinaus ist eine Windenanordnung vorgesehen, um die Länge des zwischen Abspannbock und Teleskopausleger vorgesehene Seiles zu verändern. Außerdem kann eine Steuereinrichtung für die Winden zur Aufbringung einer vorgegebenen Seilkraft auf den Abspannbock und die hiermit verbundenen Abspannungen vorgesehen sein. Es ist darüber hinaus in der Beschreibung erwähnt, dass durch die Ausbildung mit sich vom Grundkasten nach oben erstreckenden Streben, die einen festen Abstand zueinander aufweisen und als Abspannbock in der Wippebene verschwenkbar sind, sich auch seitliche Biegeverformungen des Auslegersystem verringern lassen, die beispielsweise durch Windkräfte oder Lastpendeln entstehen können.A telescopic crane with such a "superlift" is known for example from DE 31 13 763 A1. Here is a linkage for a luffing cylinder for the main boom Guy rack articulated to the basic box, which extends upwards in operation in the so-called luffing plane, transversely to the boom. It should be noted that the luffing plane is the plane in which the boom moves when it is pivoted about its horizontal pivot axis. The luffing plane is therefore perpendicular to the swivel or luffing axis of the boom. The free end of this known guy bracket is connected to the end of one of the telescopic sections and the foot of the main boom by means of ropes or rope strands. A detailed solution provides that the guy stand consists of struts which are spaced apart on both sides of the basic box and extend upwards and are rigidly connected to one another. It is also stated that the guy stand can be folded onto the basic box in a transport position. The connection between the guy stand and the boom foot is also proposed to be unchangeable in length. In addition, a winch arrangement is provided in order to change the length of the cable provided between the guy stand and the telescopic boom. In addition, a control device for the winches can be provided for applying a predetermined cable force to the guy stand and the guy devices connected to it. It is also mentioned in the description that the design with struts extending upwards from the basic box, which are at a fixed distance from one another and can be pivoted as a guy stand in the luffing plane, can also reduce lateral bending deformations of the boom system, for example due to wind forces or load pendulums can arise.

Ein realisierter Teleskopkran mit Abspannbock zur Durchführung eines Superliftbetriebs ist beispielsweise auch aus dem Firmenprospekt: Mannesmann Demag Fördertechnik, Demag AC 1600, 04/96, Seiten 5, 17 und 27 oder auch aus der DE 38 40 408 C2 bekannt. Bei dem Teleskopkran AC 1600 ist zur Erhöhung der Traglast und zur Minderung der Durchbiegung des ausgefahrenen Hauptauslegers am Grundkasten des Hauptauslegers ein auf den Grundkasten abzulegender Abspannbock angeordnet, der mit einer nahezu in der Länge unveränderbaren Abspannung mit dem Fußbereich des Hauptauslegers einerseits und mit einer weiteren Abspannung, die im Regelfall längenverändert ist, mit dem Kopf bzw. Kragen eines der inneren Teleskopschüsse andererseits verbunden. Diese versteifende Anordnung ist anwendbar für das Grundgerät allein, aber auch in Verbindung mit der Anordnung eines aus Gittermastteilen gebildeten starren oder wippbaren Hilfsauslegers.A realized telescopic crane with guy stand for carrying out a superlift operation is also known, for example, from the company brochure: Mannesmann Demag Fördertechnik, Demag AC 1600, 04/96, pages 5, 17 and 27 or also from DE 38 40 408 C2. In the AC 1600 telescopic crane, to increase the load capacity and to reduce the deflection of the extended main boom on the main boom's base box, a guy stand is to be placed on the base box, which has an almost unchangeable tensioning with the foot area of the main boom on the one hand and with another tensioning , which is usually changed in length, with the head or collar one of the inner telescopic shots connected on the other hand. This stiffening arrangement can be used for the basic device alone, but also in connection with the arrangement of a rigid or luffing jib formed from lattice mast parts.

Ein Mobilkran mit Teleskopausleger, der einen Abspannbock umfasst, ist aus der DE 30 30 820 C2 bekannt. Hier kann der Winkel des Abspannbockes gegenüber dem Fahrzeug, der über die Abspannseile den Winkel des Auslegers bestimmt, mittels einer Kolben-Zylinder-Anordnung geändert werden, um den Ausleger zu heben oder abzusenken. Diese Kolben-Zylinder-Anordnung ist zwischen einem Drehtisch und dem Kopf des Abspannbockes schwenkbar eingefügt. Mit dieser Ausgestaltung soll erreicht werden, dass beim Schwenken des Ausleger-Fußpunktes bei konstanter Länge des Auslegers die Abspannseile ohne Verwendung einer Winde straff gehalten werden können. Diesbezüglich ist auch herausgestellt, dass ein Lenker und der Abspannbock gleichzeitig und unabhängig voneinander schwenkbar sind.A mobile crane with telescopic boom, which comprises a guy stand, is known from DE 30 30 820 C2. Here, the angle of the guy stand with respect to the vehicle, which determines the angle of the boom via the guy ropes, can be changed by means of a piston-cylinder arrangement in order to raise or lower the boom. This piston-cylinder arrangement is pivotally inserted between a turntable and the head of the guy stand. This configuration is intended to ensure that the guy ropes can be kept taut without the use of a winch when the boom base point is pivoted with a constant length of the boom. In this regard, it is also emphasized that a handlebar and the guy stand can be pivoted simultaneously and independently of one another.

Auch die DE 93 11 778 U1zeigt einen Mobilkran mit Teleskopausleger und einer auf der Rückseite des Fußbereichs des äußeren Teleskoprohres des Teleskopauslegers durch einen Bolzen angelenkten Abspannstütze. Diese Abspannstütze übernimmt wiederum die Funktion eines bereits zuvor erwähnten Abspannbockes. Herausgestellt ist, dass der Mobilkran leicht in den Zustand des Kranbetriebes und in seinen Transportzustand verbringbar ist. Diese Aufgabe soll dadurch gelöst werden, dass der Teleskopausleger aus zwei miteinander verbolzbaren Teilen besteht, von denen jeder ein äußeres Rohr aufweist, aus dem jeweils mindestens ein Teleskopschuss austeleskopierbar ist.DE 93 11 778 U1 also shows a mobile crane with a telescopic boom and a guy support articulated on the back of the foot area of the outer telescopic tube of the telescopic boom. This guy support in turn takes on the function of a guy stand mentioned above. It is emphasized that the mobile crane can easily be brought into the condition of the crane operation and into its transport condition. This object is to be achieved in that the telescopic boom consists of two parts which can be bolted to one another, each of which has an outer tube from which at least one telescopic section can be telescoped.

Auch der aus der DE 196 06 109 A1 bekannte Fahrzeugkran umfasst einen Abspannbock. Der Abspannbock ist durch ein Seil oder durch ein Gestänge vorbestimmter Länge gegenüber dem Oberwagen, dem Fußpunkt bzw. der Gelenkachse eines Anlenkschusses oder dem unteren Bereich des Anlenkschusses abgespannt. Eine Winde ist im Bereich der Spitze des Abspannbocks angeordnet. Die Winde dient dazu, das Abspannseil entsprechend dem Winkel des Anlenkschusses und dem Ausfahrzustand der Teleskopschüsse mit konstanter Kraft bei unbelastetem Kran vorzuspannen.The mobile crane known from DE 196 06 109 A1 also includes a guy stand. The guy stand is braced by a rope or by a linkage of a predetermined length with respect to the superstructure, the foot point or the articulation axis of an articulation shot or the lower region of the articulation shot. A winch is in the area of the top of the Guy frames arranged. The winch is used to pretension the guy rope according to the angle of the articulation section and the extended state of the telescopic sections with constant force when the crane is not loaded.

Ein Fahrzeugkran mit Teleskopausleger und daran in der Wippebene schwenkbar angebrachtem Abspannbock ist auch aus der DE 38 40 408 A1 bekannt. Hier wird der Abspannbock durch eine hydraulische Kolben-Zylindereinheit aufgestellt und gehalten.A mobile crane with telescopic boom and anchoring bracket pivotally attached to it in the luffing plane is also known from DE 38 40 408 A1. Here the guy stand is set up and held by a hydraulic piston-cylinder unit.

Schließlich zeigt auch die DE 198 02 187 A1 einen Teleskopkran mit Superlift. Am teleskopierbaren Hauptausleger ist ein starr befestigter Hilfsausleger angebracht. Das vordere freie Ende einer Abspannung des Superliftes ist am Hilfsausleger befestigt. Dadurch werden die Kräfte- und Momentverhältnisse im System Hauptausleger-Verlängerung und Superlift so verändert, dass dies zu einer Entlastung des Hauptauslegers führt. Wie bei den eingangs genannten Superlift-Ausführungen ist wiederum eine Abspannung des Teleskopauslegers in der Wippebene ermöglicht.Finally, DE 198 02 187 A1 also shows a telescopic crane with a superlift. A rigidly attached auxiliary boom is attached to the telescopic main boom. The front free end of an anchoring of the superlift is attached to the auxiliary boom. This changes the force and torque relationships in the main boom extension and superlift system in such a way that the main boom is relieved. As with the Superlift models mentioned at the beginning, the telescopic boom can be braced in the luffing level.

Die US 5,803,279 zeigt einen Teleskopausleger mit automatisch aufstellbarem Abspannbock. Beim Ausfahren der Teleskopschüsse des Auslegers stellt sich der Abspannbock automatisch auf. In der aufgerichteten Stellung wird in der zuvor beschriebenen Weise eine Durchbiegung des Auslegers in der Wippebene verringert. Es sollen durch die hier vorgeschlagene Ausgestaltung eines Abspannbock bisherige hydraulische Aufstellhilfen wegfallen.US 5,803,279 shows a telescopic boom with an automatically adjustable guy stand. When the telescopic sections of the boom are extended, the guy stand automatically rises. In the erected position, deflection of the boom in the luffing plane is reduced in the manner described above. By the design of a guy stand proposed here, previous hydraulic installation aids are to be omitted.

Eine dem Superliftbetrieb ähnliche Ausgestaltung ist in der DE 297 20 972 U 1 beschrieben. Der hier gezeigte teleskopierbare Ausleger umfasst ein Seil, das am unteren Auslegerende angreift und über eine dem Auslegergrundkörper zugeordnete, in ihrer Winkellage verstellbare Vorrichtung nach Art eines Abspannbockes geführt ist. Damit soll das als Abspannseil benutzte Rückholseil, das zum Einholen der verschiedenen Teleskopschüsse eines solchen Teleskopauslegers dient, eine stabilisierende Wirkung auf den Ausleger ausüben und insbesondere eine unzulässige Durchbiegung des Teleskopauslegers verhindern. Das die Funktion eines Abspannbockes übernehmende Gestänge ist um einen Anlenkpunkt am Teleskopausleger bzw. dessen Grundkasten verschwenkbar. Zum Aufstellen ist eine Kolben-Zylinder-Einrichtung vorhanden. Es ist herausgestellt, dass dieses Gestänge in der Wippebene in seiner Winkellage gegenüber dem Teleskopausleger veränderbar ist. Wie beim eingangs genannten Superlift soll mit dieser Ausgestaltung ein Durchbiegen des Auslegers in der Wippebene verringert werden. Die Veränderung der Winkellage des Gestänges soll offensichtlich ermöglichen, dass beim Einziehen der Teleskopschüsse mit Hilfe des Rückholseils dieses möglichst nahe am Hauptausleger geführt wird, um so Reibungsverluste niedrig zu halten. Nur in dem Fall, dass das Rückholseil als Abspannseil verwendet wird, ist eine steilere Stellung des Gestänges mit dann an dem freien Kopfende des Gestänges geführtem Rückholseil sinnvoll.A design similar to superlift operation is described in DE 297 20 972 U 1. The telescopic boom shown here comprises a rope which engages at the lower end of the boom and is guided in the manner of a guy stand via a device which is assigned to the main body and is adjustable in its angular position. The aim of the return rope used as guy rope, which is used to pull in the various telescopic sections of such a telescopic boom, is to have a stabilizing effect on the boom exercise and, in particular, to prevent an inadmissible deflection of the telescopic boom. The linkage which takes over the function of a guy stand can be pivoted about a pivot point on the telescopic boom or its basic box. A piston-cylinder device is available for installation. It is emphasized that this linkage in the rocking plane can be changed in its angular position in relation to the telescopic boom. As with the superlift mentioned at the outset, this configuration is intended to reduce deflection of the boom in the luffing plane. The change in the angular position of the boom should obviously enable the retracting rope to be pulled as close as possible to the main boom when retracting the telescopic sections so as to keep friction losses low. Only in the case that the return rope is used as a guy rope, a steeper position of the linkage with the return rope then guided on the free head end of the linkage is sensible.

Der guten Ordnung halber seien noch die nachfolgenden, teilweise keine Teleskopkrane betreffenden Druckschriften erwähnt. Die DE 29 17 829 A1 zeigt einen Fahrzeugkran mit Teleskopausleger, der an einem drehbaren Oberwagen schwenkbar angelenkt ist. Bei dem hier vorgestellten Fahrzeugkran soll das Tragvermögen des Krans gesteigert werden, indem eine auf dem Oberwagen des Fahrzeugkrans angeordnete Aufnahme- und Anhebeeinrichtung für ein Zusatzgegengewicht vorgesehen wird. Die Aufnahme- und Anhebeeinrichtung kann eine nach hinten ausladende Stütze aufweisen, die zweckmäßigerweise schräg nach hinten und oben gerichtet ist und für die Aufnahme des Zusatzgegengewichtes absenkbar ist. Es wird herausgestellt, dass es von besonderem Vorteil wäre, wenn die Stütze mit dem Teleskopausleger oberhalb dessen Anlenkung am Oberwagen verbunden ist, da hierdurch eine Biege- und Knickentlastung des Teleskopauslegers bewirkt wird. Zur Verbindung der Stütze und des Teleskopauslegers ist insbesondere ein Spannseil vorgeschlagen.For the sake of good order, the following publications, some of which do not relate to telescopic cranes, should be mentioned. DE 29 17 829 A1 shows a mobile crane with telescopic boom, which is pivotably articulated on a rotatable superstructure. In the mobile crane presented here, the lifting capacity of the crane is to be increased by providing a receiving and lifting device for an additional counterweight arranged on the superstructure of the mobile crane. The receiving and lifting device can have a rearward protruding support, which is expediently directed obliquely backwards and upwards and can be lowered for receiving the additional counterweight. It is pointed out that it would be particularly advantageous if the support was connected to the telescopic boom above its articulation on the superstructure, since this would relieve the telescopic boom of bending and buckling. In particular, a tension cable is proposed for connecting the support and the telescopic boom.

Ein ähnlicher Fahrzeugkran mit Teleskopausleger ist in der DE 31 39 853 A1 beschrieben. Wiederum ist ein Gegengewicht vorgesehen, das mittels eines am Oberwagen des Fahrzeuges angebrachten Mastes, der nach hinten gestellt und in seiner Neigung veränderbar ist, auf eine geeignete Ausladung bringbar ist. Die Ausladung des Gegengewichtes ist in Abhängigkeit von der Veränderung der Schwerpunktlage des Gerätes infolge der Verschwenkung des Auslegers steuerbar.A similar mobile crane with telescopic boom is described in DE 31 39 853 A1. Again, a counterweight is provided, which by means of a superstructure on the vehicle attached mast, which is placed to the rear and its inclination can be changed, can be brought to a suitable radius. The unloading of the counterweight can be controlled depending on the change in the center of gravity of the device due to the pivoting of the boom.

Die DE 38 38 975 C2 zeigt ebenfalls einen Teleskopkran mit einem ausschwenkbaren Mast für ein an einer Hängevorrichtung befestigtes Gegengewicht. Der Mast ist von einem sich auf dem Oberwagen abstützenden Mastzylinder aufrichtbar. Der Mast selbst besitzt eine Teleskopverlängerung, an deren Spitze ein Anlenkpunkt für eine längenveränderbare Hängevorrichtung und eine längenveränderbare Abspannvorrichtung für den längenveränderbaren Ausleger vorhanden ist.DE 38 38 975 C2 also shows a telescopic crane with a swing-out mast for a counterweight attached to a hanging device. The mast can be erected by a mast cylinder supported on the superstructure. The mast itself has a telescopic extension, at the tip of which there is a pivot point for a variable-length suspension device and a variable-length guy device for the variable-length boom.

Aus der DE 1 751 383 ist ein Kranausleger in Schalenbauweise bekannt. Dieser Kranausleger besteht aus einem einzigen torsionssteifen Tragkörper mit vorzugsweise kreisförmigem Querschnitt. Der Tragkörper ist über- und/oder unterspannt. Als besondere Ausführungsform ist eine allseitige Überspannung vorgesehen, was mit Holmen geschieht. Insbesondere sind am Kranausleger ein oder mehrere Stemträger vorgesehen, an deren radial außenstehenden Enden die Holme angebracht sind. Dieser Stemträger und die Holme bilden an dem Kranausleger eine räumlich feststehende Verspannung.From DE 1 751 383 a crane boom in shell construction is known. This crane boom consists of a single torsionally rigid support body with a preferably circular cross section. The supporting body is over and / or under tension. As a special embodiment, all-round overvoltage is provided, which is done with spars. In particular, one or more star girders are provided on the crane boom, and the spars are attached to their radially outer ends. This stem support and the spars form a spatially fixed bracing on the crane boom.

Eine der DE 1 751 383 gleichende Ausgestaltung eines Mastes eines Turmdrehkranes bzw. hier eines Derrick-Kranes ist aus der Zeitschrift "Deutsche Hebe- und Fördertechnik", 1972, Seiten 576 - 580 bekannt. Hier sind auch sowohl an einem Gitterturm als auch einem Gittermast realisierte feste Verspannungen und Verstrebungen gezeigt.A configuration of a mast of a tower crane or a derrick crane, which is similar to DE 1 751 383, is known from the magazine "Deutsche Hebe- und Fördertechnik", 1972, pages 576-580. Fixed braces and struts realized on both a lattice tower and a lattice mast are also shown here.

In der DE 31 05 771 A1 ist ein Turmdrehkran offenbart, dessen Turm auf einer über eine Drehverbindung mit dem Unterwagen verbundenen Drehplattform befestigt ist. Am oberen Ende des Turm ist ein durch Abspannseile und Stützen ausgesteifter Ausleger mit einem auf der Plattform befestigten Gegengewicht vorgesehen. Der Turm und der Ausleger bestehen aus mindestens jeweils zwei im Bereich ihrer Enden miteinander verbundenen Rohren mit axial etwa fluchtenden Mittellinien. Auf der Oberseite des Auslegers sind mindestens im Bereich des Turms zwei Stützen V-förmig und spiegelbildlich zu ihrer vertikalen Symmetrieebene angeordnet. Mindestens zwei mit ihren vorderen Enden im äußeren Bereich des Auslegers befestigte Abspannseile verlaufen über Befestigungspunkte an den äußeren Enden der Stützen zu den äußeren, durch ein Abspannseil mit der Drehplattform verbundenen Ende einer am oberen Ende des Turms befestigten und dem Ausleger gegenüberliegenden Rückenstütze. Die den Turm bildenden Rohre können ineinander teleskopartig geführt und in ihrer ausgefahrenen, einander noch teilweise einfassenden Stellung gegeneinander verspannt sein. Am Ausleger ist eine Laufkatze hin- und her verschiebbar angeordnet, wie es bei Obendreherkranen üblich ist. Ein solcher Turmdrehkran soll sich mit geringerem Aufwand als bekannte Turmdrehkrane aus Gittermastelementen fertigen lassen.DE 31 05 771 A1 discloses a tower crane, the tower of which is attached to a rotating platform connected to the undercarriage via a rotary connection. At the upper end of the tower is an outrigger braced by guy ropes and supports counterweight attached to the platform. The tower and the boom consist of at least two tubes connected to one another in the region of their ends with axially approximately aligned center lines. On the top of the boom, at least in the area of the tower, two supports are arranged in a V-shape and in mirror image to their vertical plane of symmetry. At least two guy ropes fastened with their front ends in the outer area of the boom run via attachment points on the outer ends of the supports to the outer ends of a back support attached to the upper end of the tower and fastened to the boom by a guy rope. The tubes forming the tower can be telescoped into one another and braced against one another in their extended, still partially encasing position. A trolley can be moved back and forth on the jib, as is usual with top-slewing cranes. Such a tower crane should be able to be manufactured from lattice mast elements with less effort than known tower cranes.

Ein Ausleger mit horizontaler Seilabspannung ist aus der DE 37 34 919 A1 bekannt. Der hier gezeigte schwenkbare Ausleger weist mehrere, parallel zur Schwenkachse verlaufende Traversen auf, die über Seile abgespannt sind. Die gezeigte Auslegerausgestaltung ist schlussendlich nichts anderes als ein verspannter Träger mit festen Traversen. Im Übrigen ist diese Art von Ausleger für beispielsweise auf Raupen verfahrbare Tragrahmen vorgesehen.A boom with horizontal rope bracing is known from DE 37 34 919 A1. The swiveling boom shown here has a plurality of traverses that run parallel to the swivel axis and are braced via ropes. The boom design shown is ultimately nothing more than a braced beam with fixed crossbeams. Incidentally, this type of boom is provided for support frames that can be moved on caterpillars, for example.

Ein Ausleger eines Kranes für Containerbetrieb ist aus der DE 1 531 155 bekannt. Es wird insbesondere auf die spezielle Problematik bei der Handhabung von Containern eingegangen. Offenbart wird ein Spitzenausleger eines Doppellenker-Wippkranes, bei dem zwei den äußeren Teil des Auslegers bildende, schnabelartige spreizbare Arme vorhanden sind, die zwei Kopfrollen oder Kopfrollengruppen tragen. Die Arme sind in einer solchen Spreizlage feststellbar, in welcher der Abstand, den die Mitten der beiden Rollen oder Rollengruppen voneinander haben, etwa gleich der Entfernung zwischen den Mitten der die Containertraverse tragenden Hubseilgehänge ist. Die beiden Arme sind im zusammengekuppelten Zustand gegeneinander versteift und sind formschlüssig und schubfest verbunden. Die spreizbaren Arme selbst sind wieder, wie bereits zuvor erläutert, gegen Durchbiegen über einen Abspannbock abgespannt.A boom of a crane for container operation is known from DE 1 531 155. In particular, the special problems in handling containers are dealt with. A luffing jib of a double link luffing crane is disclosed, in which there are two beak-like expandable arms which form the outer part of the jib and which carry two top rollers or top roller groups. The arms can be locked in such a spread position in which the distance that the centers of the two rolls or groups of rolls have from one another is approximately equal to the distance between the centers of the lifting rope slings carrying the container crossbar. The two arms are in the coupled together stiffened against each other and are positively and shear-proof connected. The spreadable arms themselves are, as already explained, braced against bending via a guy stand.

Es hat sich nun gezeigt, dass Teleskopkrane der eingangs erläuterten Art in Steilstellung auch unter Einsatz der zuvor erläuterten Superlift-Technologie nur eine begrenzte Traglast aufnehmen können.It has now been shown that telescopic cranes of the type described in the introduction can only accept a limited lifting capacity in the steep position even when using the previously explained superlift technology.

DARSTELLUNG DER ERFINDUNGPRESENTATION OF THE INVENTION

Das der Erfindung zugrunde liegende technische Problem besteht darin, einen Teleskopkran bereitzustellen, der gerade auch in Steilstellungen des Auslegers eine erhöhte Tragkraft aufnehmen kann. Außerdem besteht ein der Erfindung zugrunde liegendes technisches Problem darin, ein Verfahren zum Abspannen eines Teleskopauslegers eines Teleskopkranes bereitzustellen, so dass mit einem derartigen Ausleger erhöhte Traglasten, insbesondere in Steilstellungen des Auslegers, aufgenommen werden können.The technical problem on which the invention is based is to provide a telescopic crane which can take up an increased load capacity, especially in the steep positions of the jib. In addition, a technical problem on which the invention is based is to provide a method for bracing a telescopic boom of a telescopic crane, so that increased loads, in particular in steep positions of the boom, can be absorbed with such a boom.

Gemäß einem ersten Aspekt der vorliegenden Erfindung wird ein Teleskopkran bereitgestellt, der einen Unterwagen, einen drehbar darauf angeordneten Oberwagen, ein Gegengewicht und einen Ausleger umfasst, der einen Hauptausleger mit einem Grundkasten und mindestens einen darin ein- und ausschiebbaren Teteskopschuss aufweist. Es ist ferner mindestens ein Absparmstützenpaar mit zwei Abspannstützen vorhanden, wobei mindestens eine der zwei Abspannstützen am Ausleger zur Wippebene geneigt angeordnet ist, um auf den Ausleger seitlich einwirkende Kräfte zumindest teilweise aufzunehmen, und die mit einem im Wesentlichen in Längsrichtung des Auslegers verlaufenden Spannmittel verbunden sind.According to a first aspect of the present invention, there is provided a telescopic crane which comprises an undercarriage, an upper carriage rotatably arranged thereon, a counterweight and a boom which has a main boom with a basic box and at least one telescopic section which can be pushed in and out. There is also at least one pair of guy supports with two guy supports, at least one of the two guy supports being arranged on the boom inclined to the luffing plane, in order to at least partially exert forces acting laterally on the boom to record, and which are connected to a clamping means running essentially in the longitudinal direction of the boom.

Erstmals wird erfindungsgemäß ein Teleskopausleger nicht nur in der Wippebene versteift, wie es mittels des seit langem bekannten Abspannbock bzw. Superlift der Fall ist, sondern auch in außerhalb der Wippebene liegenden Verformungsebenen, wodurch insbesondere in Steilstellungen des Teleskopauslegers gegenüber dem früheren Superlift deutlich erhöhte Traglasten mit dem ansonsten unveränderten Teleskopausleger aufgenommen werden können.For the first time, according to the invention, a telescopic boom is not only stiffened in the luffing plane, as is the case with the long-known guy frame or superlift, but also in deformation planes lying outside the luffing plane, which means that particularly in steep positions of the telescopic boom compared to the previous Superlift, the payloads are significantly increased the otherwise unchanged telescopic boom can be accommodated.

Eine beispielhafte Ausführungsform der vorliegenden Erfindung sieht vor, dass die Fußenden der Abspannstützen auf einem quer zur Längsachse des Auslegers liegenden und über diesen hinauskragenden Träger angeordnet sind.An exemplary embodiment of the present invention provides that the foot ends of the guy supports are arranged on a support lying transversely to the longitudinal axis of the boom and projecting beyond it.

Eine weitere beispielhafte Ausführungsform der vorliegenden Erfindung sieht vor, dass das freie Kopfende jeder Abspannstütze über ein erstes Spannmittel wahlweise mit dem Oberwagen, dem Unterwagen, dem Fußbereich des Auslegers, einem festen oder separat geführten Gegengewicht oder dem Gegengewicht in Richtung Fußende des Auslegers und über ein weiteres Spannmittel mit einer ausgewählten Stelle des Hauptauslegers oder einem Teil einer Auslegerverlängerung in Richtung Kopfende des Auslegers verbunden ist.Another exemplary embodiment of the present invention provides that the free head end of each guy support via a first tensioning means optionally with the superstructure, the undercarriage, the foot area of the boom, a fixed or separately guided counterweight or the counterweight in the direction of the foot end of the boom and over one further clamping means is connected to a selected point of the main boom or part of a boom extension in the direction of the head end of the boom.

Eine weitere beispielhafte Ausführungsform der vorliegenden Erfindung sieht vor, dass das freie Kopfende jeder Abspannstütze über ein Spannmittel mit dem Kopf oder Kragen eines der inneren Teleskopschüsse verbunden ist.Another exemplary embodiment of the present invention provides that the free head end of each guy support is connected to the head or collar of one of the inner telescopic sections via a tensioning means.

Beispielsweise kann auch das freie Kopfende jeder Abspannstütze über ein Spannmittel mit einem Teil eines aus Gittermastteilen gebildeten starren oder wippbaren Hilfsausleger verbunden sein.For example, the free head end of each guy support can also be connected to a part of a rigid or luffing auxiliary boom formed from lattice mast parts via a tensioning means.

Eine beispielhafte Ausführungsform der vorliegenden Erfindung sieht vor, dass die Länge jeder Abspannstütze veränderbar ist. Die Länge jeder Abspannstütze kann beispielsweise stufenweise oder kontinuierlich veränderbar sein.An exemplary embodiment of the present invention provides that the length of each guy support can be changed. The length of each guy support can, for example, be changed in steps or continuously.

Bei einer beispielhaften Ausführungsform der vorliegenden Erfindung sind die Spannmittel als Seil und/oder als Stange ausgebildet.In an exemplary embodiment of the present invention, the tensioning means are designed as a rope and / or as a rod.

Eine beispielhafte Ausführungsform der vorliegenden Erfindung sieht vor, dass das Spannmittel mit einer Spannvorrichtung zusammenwirkt. Eine solche Spannvorrichtung kann beispielsweise eine separat ansteuerbare Spannvorrichtung für das Spannmittel jeder Abspannstütze sein.An exemplary embodiment of the present invention provides that the clamping means cooperates with a clamping device. Such a tensioning device can be, for example, a separately controllable tensioning device for the tensioning means of each guy support.

Beispielsweise kann eine solche Spannvorrichtung an der Abspannstütze, am Oberwagen, am Unterwagen, am Hauptausleger, am Gegengewicht oder an einer Auslegerverlängerung angeordnet sein.For example, such a tensioning device can be arranged on the guy support, on the superstructure, on the undercarriage, on the main boom, on the counterweight or on a boom extension.

In einer beispielhaften Ausführungsform der vorliegenden Erfindung ist die Spannvorrichtung als Winde oder Kolben-Zylinder-Einheit ausgebildet.In an exemplary embodiment of the present invention, the tensioning device is designed as a winch or piston-cylinder unit.

In einer beispielhaften Ausführungsform der vorliegenden Erfindung kann eine Neigungsänderung einer Abspannstütze zum Spannen des zugehörigen Spannmittels genützt werden.In an exemplary embodiment of the present invention, a change in inclination of a guy support can be used to tension the associated tensioning means.

Alternativ oder zusätzlich hierzu ist es auch möglich, eine Längenänderung einer Abspannstütze zum Spannen des zugehörigen Spannmittels zu nutzen.Alternatively or in addition to this, it is also possible to use a change in length of a guy support for tensioning the associated tensioning means.

In einer beispielhaften Ausführungsform der vorliegenden Erfindung sind die Abspannstützen auf der Oberseite des Auslegers angeordnet.In an exemplary embodiment of the present invention, the guy supports are arranged on the top of the boom.

Insbesondere kann vorgesehen sein, dass ein Paar Abspannstützen am Hauptausleger im Bereich des Grundkastens angeordnet ist.In particular, it can be provided that a pair of guy supports are arranged on the main boom in the area of the basic box.

In einer beispielhaften Ausführungsform der vorliegenden Erfindung ist das Paar Abspannstützen im vorderen Bereich zwischen der Anlenkung eines Wippzylinders und einer vorderen Lagerung am Grundkasten angeordnet.In an exemplary embodiment of the present invention, the pair of guy supports are arranged in the front area between the linkage of a luffing cylinder and a front bearing on the basic box.

Eine beispielhafte Ausführungsform der vorliegenden Erfindung sieht vor, dass die Fußenden der Abspannstützen im Übergangsbereich zwischen der Oberseite und der jeweiligen Seitenwand des Grundkastens mit dem Ausleger verbunden sind.An exemplary embodiment of the present invention provides that the foot ends of the guy supports are connected to the boom in the transition region between the upper side and the respective side wall of the base box.

Bei einer beispielhaften Ausführungsform der vorliegenden Erfindung ist der durch die beiden Abspannstützen eines Abspannstützenpaares eingeschlossene Winkel veränderbar. So kann beispielsweise vorgesehen sein, dass der zwischen den beiden Abspannstützen eingeschlossene Winkel stufenweise oder kontinuierlich über ein Verschwenken der Abspannstützen einstellbar ist.In an exemplary embodiment of the present invention, the angle enclosed by the two guy supports of a pair of guy supports can be changed. For example, it can be provided that the angle enclosed between the two guy supports can be adjusted in steps or continuously by pivoting the guy supports.

In einer beispielhaften Ausführungsform der vorliegenden Erfindung sind zum Verschwenken der Abspannstützen diese jeweils mit einer Kolben-Zylinder-Einheit verbunden.In an exemplary embodiment of the present invention, for pivoting the guy supports, they are each connected to a piston-cylinder unit.

Eine weitere beispielhafte Ausführungsform der vorliegenden Erfindung sieht vor, dass jede Abspannstütze zwei in etwa parallel liegende Holme aufweist. Beispielsweise kann dann zwischen den Holmen der jeweiligen Abspannstützen eine Winde zum Spannen des Spannmittels angeordnet sein.Another exemplary embodiment of the present invention provides that each guy support has two spars lying approximately in parallel. For example, a winch for tensioning the tensioning means can then be arranged between the bars of the respective guy supports.

Die genannten Merkmale der vorliegenden beispielhaften Ausführungsformen der vorliegenden Erfindung sind auch in Verbindung mit einem am Kopf des innersten Teleskopschusses angebrachten Hilfsausleger, der aus Gittermastteilen gebildet ist, verwendbar. Gleiches gilt auch für einen aus Gittermastteilen gebildeten wippbaren Hilfsausleger mit mindestens einer Wippstütze.The mentioned features of the present exemplary embodiments of the present invention can also be used in connection with an auxiliary boom attached to the head of the innermost telescopic section, which is formed from lattice mast parts. The same also applies to a luffing auxiliary boom formed from lattice mast parts with at least one luffing support.

Eine weitere beispielhafte Ausführungsform der vorliegenden Erfindung sieht vor, dass zur Erfassung der seitlichen Verformung des Auslegers ein Messmittel vorgesehen ist, das steuerungsmäßig mit einer den Spannungsgrad der seitlichen Abspannung beeinflussenden Spannvorrichtung verknüpft ist. So kann beispielsweise die seitliche Verformung direkt oder indirekt über Krangrößen, wie beispielsweise Seilspannung, Seillänge, Seildehnung sowie die am Ausleger angreifenden Kräfte, in Form des seitlich auftretenden Windes, der Sonneneinstrahlung sowie der am Hauptausleger vorherrschenden Temperaturen erfassbar sein.A further exemplary embodiment of the present invention provides that a measuring means is provided for detecting the lateral deformation of the boom, which is linked in terms of control to a tensioning device influencing the degree of tension of the lateral guying. For example, the lateral deformation can be detected directly or indirectly via crane sizes, such as rope tension, rope length, rope elongation and the forces acting on the jib, in the form of the wind from the side, the solar radiation and the temperatures prevailing on the main jib.

Gemäß einem weiteren Aspekt der vorliegenden Erfindung wird ein Verfahren vorgeschlagen, mittels dem ein Teleskopausleger mit einem Grundkasten und mindestens einem darin einund ausschwenkbaren Teleskopschusses so abgespannt werden kann, dass auch seitliche Kräfte aufnehmbar sind. So wird bei dem erfindungsgemäßen Verfahren zumindest eine der Abspannstützen eines Abspannstützenpaares an dem Ausleger zur Wippebene geneigt auskragend angeordnet. Jede Abspannstütze des Abspannstützenpaares wird außerdem mit einem im Wesentlichen in Längsrichtung des Auslegers verlaufenden Spannmittel verbunden.According to a further aspect of the present invention, a method is proposed by means of which a telescopic boom with a basic box and at least one telescopic section that can be swung in and out can be braced such that lateral forces can also be absorbed. Thus, in the method according to the invention, at least one of the guying supports of a pair of guying supports is arranged on the jib cantilevered to the luffing plane. Each guy support of the pair of guy supports is also connected to a tensioning means that extends essentially in the longitudinal direction of the boom.

Eine beispielhafte Ausführungsform des erfindungsgemäßen Verfahrens sieht vor, dass die beiden Abspannstützen über dem Ausleger verschwenkt werden, um den zwischen den Abspannstützen eingeschlossenen Winkel einzustellen.An exemplary embodiment of the method according to the invention provides that the two guy supports are pivoted above the boom in order to set the angle enclosed between the guy supports.

Gemäß einer weiteren beispielhaften Ausführungsform des vorliegenden erfindungsgemäßen Verfahrens wird das freie Kopfende der Abspannstütze über ein erstes Spannmittel wahlweise mit dem Oberwagen, dem Unterwagen, dem Fußbereich des Auslegers, einem festen oder separat geführten Gegengewicht oder dem Boden in Richtung Fußende des Auslegers und über ein weiteres Spannmittel mit einer ausgewählten Stelle des Hauptauslegers oder einem Teil einer Auslegerverlängerung in Richtung Kopfende des Auslegers verbunden.According to a further exemplary embodiment of the present method according to the invention, the free head end of the guy support is optionally connected to the superstructure, the undercarriage, the foot region of the boom, a fixed or separately guided counterweight or the floor in the direction of the foot end of the boom via a first tensioning means and another Clamping means connected to a selected point on the main boom or part of a boom extension in the direction of the head end of the boom.

Beispielsweise kann das freie Kopfende jeder Abspannstütze über ein Spannmittel mit dem Kopf oder Kragen eines der inneren Teleskopschüsse verbunden werden.For example, the free head end of each guy support can be connected to the head or collar of one of the inner telescopic sections via a tensioning means.

Eine alternative Ausführungsform der vorliegenden Erfindung sieht vor, dass das freie Kopfende jeder Abspannstütze über ein Spannmittel mit einem Teil eines aus Gittermastteilen gebildeten starren oder wippbaren Hilfsauslegers verbunden wird.An alternative embodiment of the present invention provides that the free head end of each guy support is connected via a tensioning means to a part of a rigid or luffing jib made of lattice boom parts.

Bei einer beispielhaften Ausführungsform des erfindungsgemäßen Verfahrens wird die Länge jeder Abspannstütze stufenweise oder kontinuierlich verändert, um die Spannmittel zu spannen.In an exemplary embodiment of the method according to the invention, the length of each guy support is changed stepwise or continuously in order to tension the tensioning means.

Eine alternative Ausführungsform sieht vor, dass eine Neigungsveränderung einer Abspannstütze zum Spannen des zugehörigen Spannmittels genutzt wird.An alternative embodiment provides that a change in the inclination of a guy support is used to tension the associated tensioning means.

Eine weitere beispielhafte Ausführungsform des erfindungsgemäßen Verfahrens sieht vor, dass das Spannmittel mit einer Spannvorrichtung gespannt wird.Another exemplary embodiment of the method according to the invention provides that the tensioning means is tensioned with a tensioning device.

Beispielsweise kann das Spannmittel jeder Abspannstütze mittels einer separat ansteuerbaren Spannvorrichtung gespannt werden. Gemäß einer weiteren beispielhaften Ausführungsform der vorliegenden Erfindung werden die Abspannstützen mittels Kolben-Zylinder-Einheiten aufgestellt.For example, the tensioning means of each guy support can be tensioned by means of a separately controllable tensioning device. According to a further exemplary embodiment of the present invention, the guy supports are set up by means of piston-cylinder units.

Eine weitere beispielhafte Ausführungsform des erfindungsgemäßen Verfahrens sieht vor, dass jede Abspannstütze mittels einer Kolben-Zylinder-Einlzeit seitlich verschwenkt wird.Another exemplary embodiment of the method according to the invention provides that each guy support is pivoted laterally by means of a piston-cylinder loading time.

Außerdem kann ein erfindungsgemäßes Verfahren dergestalt ausgebildet sein, dass die seitliche Verformung des Auslegers mit Hilfe eines Messmittels ermittelt wird und die den Spannungsgrad der seitlichen Abspannung beeinflussenden Spannvorrichtung entsprechend gesteuert wird.In addition, a method according to the invention can be designed such that the lateral deformation of the cantilever is determined with the aid of a measuring device and the tensioning device influencing the degree of tension of the lateral guying is controlled accordingly.

Schließlich ist eine Ausführungsform des erfindungsgemäßen Verfahrens so ausgebildet, dass die seitliche Verformung direkt oder indirekt über Krangrößen, wie zuvor erwähnt, erfasst wird.Finally, an embodiment of the method according to the invention is designed such that the lateral deformation is detected directly or indirectly via crane sizes, as mentioned above.

Nach einer beispielhaften Ausgestaltung der Erfindung sind am Ausleger mindestens zwei gegenüber der Wippebene geneigte Abspannstützen angeordnet, die jeweils mit einem im Wesentlichen in Längsrichtung des Auslegers verlaufenden Spannmittel verbunden sind, wobei die Neigung der Abspannstützen so gewählt ist, dass die auf den Ausleger wirkende seitliche Belastung teilweise oder vollständig durch die Abspannung aufgenommen wird. Die Neigung der Abspannstütze kann quer zur Längsrichtung oder in Längsrichtung oder überlagernd quer zur und in Längsrichtung des Auslegers erfolgen.According to an exemplary embodiment of the invention, at least two guy supports inclined with respect to the luffing plane are arranged on the boom, each of which is connected to a tensioning means running essentially in the longitudinal direction of the boom, the inclination of the guy supports being selected such that the lateral load acting on the boom partially or completely absorbed by the guying. The guy support can be inclined transversely to the longitudinal direction or in the longitudinal direction or overlapping transversely to and in the longitudinal direction of the boom.

Vorzugsweise sind auf der Oberseite des jeweiligen Auslegerelementes zwei geneigte Abspannstützen vorgesehen, wobei im Regetfall die Winkelneigung beider Abspannstützen gleich ist. Sie kann aber je nach Richtung der am Ausleger angreifenden Kräfte auch verschieden sein. Die Fußenden beider Abspannstützen können an einer gemeinsamen Stelle mit der Oberseite des Auslegers verbunden sein, aber ebenso auch versetzt zueinander. Nach einem weiteren Merkmal der Erfindung ist das Fußende wenigstens einer Abspannstütze im Übergangsbereich zwischen Oberseite oder jeweiliger Seitenwand mit dem Ausleger verbunden. Alternativ gibt es auch die Möglichkeit, das Fußende wenigstens einer Abspannstütze auf einen quer zur Längsachse des Auslegers und über diesen hinauskragenden Träger anzuordnen.Preferably, two inclined guy supports are provided on the top of the respective boom element, the angle inclination of both guy supports being the same in the normal case. However, it can also vary depending on the direction of the forces acting on the boom. The foot ends of both guy supports can be connected to the top of the boom at a common location, but also offset from one another. According to a further feature of the invention, the foot end of at least one guy support is connected to the boom in the transition region between the upper side or the respective side wall. Alternatively, there is also the possibility of arranging the foot end of at least one guy support on a support projecting transversely to the longitudinal axis of the boom and beyond it.

Die vorgeschlagene Anordnung hat den Vorteil, dass je nach Winkeistellung der Abspannstützen der Anteil der Abspannkraft, der in die Seitenrichtung wirksam wird, stufenlos oder kontinuierlich verändert werden kann. Im Falle der Anordnung von zwei versetzt angeordneten Abspannstützen bedeutet dies, dass in der einen Extremlage, d. h. in der Vertikalstellung, die beiden parallel stehenden Abspannstützen die gleiche Wirkung im Sinne eines Supertiftbetriebes haben wie der bekannte Abspannbock. In einer Winkelstellung <90° bis >0° für die beiden Abspannstützen wird die wirksame Spannkraft aufgeteilt in eine Komponente Superliftbetrieb und eine Komponente seitliche Abspannung. In der zweiten Extremlage, d. h. in der Horizontalsteltung, bewirken die beiden Abspannstützen nur eine Verstärkung in beide Seitenrichtungen.The proposed arrangement has the advantage that, depending on the angular position of the guy supports, the portion of the guy force that acts in the lateral direction can be changed continuously or continuously. In the case of the arrangement of two guy supports arranged offset, this means that in one extreme position, ie in the vertical position, the two guy supports in parallel have the same effect in the sense of a super pin operation as the known guy stand. In an angular position <90 ° to> 0 ° for the two guy supports, the effective clamping force is divided into a superlift operation component and a component lateral guying. In the second extreme position, ie in the horizontal position, the two guy supports only provide reinforcement in both lateral directions.

Das jeweilig freie Kopfende der Abspannstütze ist über ein erstes Spannmittel wahlweise mit dem Unterwagen, dem Oberwagen, dem Fußbereich des Auslegers, dem festen oder separat geführten Gegengewicht oder dem Boden in Richtung Fußende des Auslegers und über ein weiteres Spannmittels mit einer ausgewählten Stelle des Auslegers in Richtung Auslegerkopf verbunden. Die jeweils gewünschte Winkelstellung der Abspannstützen kann stufenweise oder kontinuierlich über ein Verschwenken der Abspannstützen eingestellt werden. Damit ist auch eine asymmetrische Winkeleinstellung möglich. Dies bedeutet, dass bei einer angreifenden Seitenkraft nur an einer Seite die jeweilige Abspannstütze mehr in Richtung seitlicher Abspannung geneigt wird, während die zweite Abspannstützen in einer Mittellage verbleibt.The respective free head end of the guy support is connected to the undercarriage, the uppercarriage, the foot area of the boom, the fixed or separately guided counterweight or the floor in the direction of the foot end of the boom via a first clamping device and via a further clamping device to a selected point on the boom Connected towards the boom head. The respective desired angular position of the guy supports can be adjusted gradually or continuously by pivoting the guy supports. This also enables an asymmetrical angle setting. This means that with an applied lateral force only on one side the respective guy support is inclined more in the direction of the side guy, while the second guy support remains in a central position.

Da auch der Abstand der Spannmittel vom Ausleger Einfluss auf die gewünschte Verstärkung hat, ist vorgesehen, die Länge der Abspannstützen in Stufen oder kontinuierlich zu verändern. Die Spannmittel können als Seil oder als Stange ausgebildet sein. Das Spannmittel bzw. die Spannmittel können mit und ohne Vorspannung angeordnet werden. Im Falle einer Vorspannung und eines nachregulierbaren Spanngrades wirkt das Spannmittel mit einer Spannvorrichtung zusammen. Vorzugsweise ist dies eine Winde oder eine Kolben-Zylinder-Einheit. Aber auch die Winkelverstellung und/oder die Längenänderung der Abspannstütze kann im Sinne einer Spannvorrichtung genutzt werden. Die Spannvorrichtungen sind wahlweise an den Abspannstützen, am Ausleger, am Ober- oder Unterwagen oder am Gegengewicht anordenbar.Since the distance between the clamping devices and the boom also influences the desired reinforcement, it is planned to change the length of the guy supports in steps or continuously. The tensioning means can be designed as a rope or as a rod. The clamping means or the clamping means can be arranged with and without pretension. In the case of a pretension and an adjustable degree of tension, the tensioning means cooperates with a tensioning device. This is preferably a winch or a piston-cylinder unit. But also the angle adjustment and / or the length change of the guy support can be used in the sense of a tensioning device. The tensioning devices can be arranged on the guy supports, on the boom, on the superstructure or undercarriage or on the counterweight.

Vorzugsweise werden die Abspannstützen am Hauptausleger im Bereich des Grundkastens angeordnet, insbesondere im vorderen Bereich zwischen der Anlenkung des Wippzylinders und der vorderern Lagerung. Zur kontinuierlichen Verstellung der Abspannstützen ist vorzugsweise jede Abspannstütze mit einer auf dem Grundkasten sich abstützenden Kolben-Zylinder-Einheit verbunden. Zur Anordnung der Winde weist nach einem weiteren Merkmal der Erfindung die Abspannstütze zwei Holme auf, zwischen denen die Winde anordenbar ist.The guy supports are preferably arranged on the main boom in the area of the basic box, in particular in the front area between the articulation of the luffing cylinder and the front bearing. For the continuous adjustment of the guy supports, each guy support is preferably connected to a piston-cylinder unit supported on the basic box. To arrange the winch, according to a further feature of the invention, the guy support has two spars, between which the winch can be arranged.

Die Ausrüstung des Teleskopauslegers kann noch ergänzt werden mit der Anordnung eines aus Gittermastteilen gebildeten starren oder wippbaren Hilfsauslegers. Auch an diese Auslegerelemente kann die vorgeschlagene seitliche Abspannung angebracht werden.The equipment of the telescopic boom can be supplemented with the arrangement of a rigid or luffing auxiliary boom formed from lattice mast parts. The proposed lateral guying can also be attached to these cantilever elements.

Besonders wirkungsvoll kann die seitliche Abspannung eingesetzt werden, wenn der Kran mit einem Messmittel zur Erfassung der seitlichen Verformung des Auslegers versehen ist. Überschreitet die Verformung einen festgelegten zulässigen Wert, wird das mit der Abspannung verbundene Spannmittel aktiviert und die Abspannung nachgespannt. Der Grad der seitlichen Verformung kann direkt oder indirekt über Krangrößen ermittelt werden. Beispielsweise sind dies die Seilspannung, die Seillänge und Seildehnung. Aber auch über die an den Ausleger angreifenden Kräfte in Form des seitlich auftretenden Windes, der Sonneneinstrahlung sowie der im Ausleger vorherrschenden Temperaturen kann eine Aussage über den Grad der seitlichen Verformung gemacht werden.Lateral bracing can be used particularly effectively if the crane is equipped with a measuring device to record the lateral deformation of the boom. If the deformation exceeds a specified permissible value, the clamping device connected to the guying is activated and the guying is re-tensioned. The degree of lateral deformation can be determined directly or indirectly via crane sizes. For example, these are rope tension, rope length and rope elongation. However, a statement can also be made about the degree of lateral deformation via the forces acting on the boom in the form of the wind arising from the side, the solar radiation and the temperatures prevailing in the boom.

Weitere Merkmale, Vorteile und Einzelheiten der Erfindung ergeben sich aus der nachfolgenden Beschreibung von in einer Zeichnung dargestellten Ausführungsbeispiele. Es zeigen:

Fig.1a-1c
als Prinzipskizze die mögliche Anordnung einer gegenüber der Wippebene geneigten Abspannstütze
Figur 2
als Prinzipskizze die Anordnung zweier geneigter Abspannstützen mit einem gemeinsamen Fußende.
Figur3a-3d
als Prinzipskizze die mögliche Anordnung zweier geneigter Abspannstützen mit getrennten Fußenden
Figur 4
als Prinzipskizze die Anordnung einer quer liegenden Abspannstütze
Figur 5a
in einer Vorderansicht ein praktisches Ausführungsbeispiel mit zwei neigbaren Abspannstützen.
Figur 5b
eine Seitenansicht von Figur 5a.
Further features, advantages and details of the invention result from the following description of exemplary embodiments shown in a drawing. Show it:
1a-1c
as a basic sketch, the possible arrangement of a guy support inclined to the luffing plane
Figure 2
as a basic sketch, the arrangement of two inclined guy supports with a common foot end.
Figur3a 3d
as a basic sketch, the possible arrangement of two inclined guy supports with separate foot ends
Figure 4
as a basic sketch, the arrangement of a transverse guy support
Figure 5a
in a front view a practical embodiment with two inclinable guy supports.
Figure 5b
a side view of Figure 5a.

In den Figuren 1a-c sind als Prinzipskizze die mögliche Anordnung einer gegenüber der Wippebene geneigten Abspannstütze dargestellt. Die Abspannstütze 2 ist vorzugsweise auf der Oberseite 3 eines hier symbolhaft dargestellten Auslegerelementes 1 angeordnet. Dieses Auslegerelement 1 kann ein Grundkasten oder ein Schuss eines Hauptauslegers eines Teleskopkranes oder das Gittermastelement eines starren oder wippbaren Hilfsauslegers sein. Die im Auslegerelement 1 eingezeichnete Mittelachse 4 ist im Idealfall auch die Wippebene des Auslegers. Erfindungsgemäß ist die Abspannstütze 2 gegenüber der Wippebene in einem Winkel α>0 geneigt. Die gestrichelte Darstellung der Abspannstütze 2' soll verdeutlichen, dass die Abspannstütze 2 auch nach der anderen Seite hin neigbar ist. Das freie Ende 5 der Abspannstüzte 2 ist mit einem Spannmittel 6,7 vorzugsweise einem Seil verbunden. Nicht dargestellt ist hier die Verbindung der Spannmittel 6,7 mit einer am Ausleger angeordneten Fixstelle oder einer Spannvorrichtung wie Kolbenzylinder-Einheit oder Winde. Ein Spannen der Spannmittel 6,7 kann man aber auch ohne Spannvorrichtung erreichen. Zum einen in der Weise, dass die Spannmittel 6,7 bei einem kleineren oder größeren Winkel α angeordnet werden und danach die Abspannstütze 2 weitergeneigt wird. Alternativ ist es auch möglich, die Abspannstütze 2 teleskopartig auszubilden und durch Längenveränderung einen Spanngrad zu erreichen.In FIGS. 1a-c, the possible arrangement of a guy support inclined with respect to the luffing plane is shown as a basic sketch. The guy support 2 is preferably arranged on the top 3 of a cantilever element 1 shown here symbolically. This boom element 1 can be a basic box or a shot of a main boom of a telescopic crane or the lattice boom element of a rigid or luffing jib. The center axis 4 drawn in the boom element 1 is ideally also the luffing plane of the boom. According to the invention, the guy support 2 is inclined at an angle α> 0 with respect to the luffing plane. The dashed representation of the guy support 2 'is intended to clarify that the guy support 2 can also be inclined towards the other side. The free end 5 of the guy support 2 is connected to a tensioning means 6, 7, preferably a rope. Not shown here is the connection of the tensioning means 6, 7 with a fixed point arranged on the boom or a tensioning device such as a piston-cylinder unit or winch. Clamping of the clamping means 6, 7 can also be achieved without a clamping device. Firstly, in such a way that the clamping means 6, 7 are arranged at a smaller or larger angle α and then the guy support 2 is further inclined. Alternatively, it is also possible to make the guy support 2 telescopic and to achieve a degree of tension by changing the length.

Im Teilbild b ist die Möglichkeit dargestellt die Abspannstütze 2 auch in der anderen Ebene in einem Winkel β>0 zu neigen. Teilbüd c zeigt die Möglichkeit, die Abspannstütze 2 überlappend in beiden Ebenen zu neigen.Part b shows the possibility of inclining the guy support 2 in the other plane at an angle β> 0. Teilbüd c shows the possibility of inclining the guy support 2 overlapping in both planes.

In Figur 2 ist ebenfalls in einer Prinzipskizze die Anordnung zweier Abspannstützen 2.1, 2.2 dargestellt. Die Besonderheit bei dieser Anordnung ist, dass beide Abspannstützen 2.1,2.2 mit nur einem einzigen Fußende 8 auf der Oberseite 3 des Auslegerelementes 1 angeordnet sind. Der jeweilige Neigungswinkel α1, α2 kann gleich oder verschieden sein.In Figure 2, the arrangement of two guy supports 2.1, 2.2 is also shown in a schematic diagram. The peculiarity of this arrangement is that both guy supports 2.1.2.2 are arranged with only a single foot end 8 on the upper side 3 of the boom element 1. The respective angle of inclination α1, α2 can be the same or different.

In Teilbildern a-d von Figur 3 sind ebenfalls als Prinzipskizze die Möglichkeit der Anordnung zweier Abspannstützen 2.1-,2.2 dargestellt, die ein getrenntes Fußende 8.1,8.2 aufweisen. Im ersten Teilbild a befinden sich die Fußenden 8.1,8.2 im Bereich der Oberseite 3 des Auslegerelementes 1, während im Teilbild b die Fußenden 8.1,8.2 im Übergangsbereich von der Oberseite 3 zur jeweiligen Seitenwand 9,9' sich befinden.In partial images a-d of FIG. 3, the possibility of arranging two guy supports 2.1-, 2.2, which have a separate foot end 8.1.8.2, is also shown as a schematic diagram. In the first partial picture a, the foot ends 8.1,8.2 are located in the area of the upper side 3 of the cantilever element 1, while in the partial picture b the foot ends 8.1,8.2 are located in the transition area from the upper side 3 to the respective side wall 9,9 '.

Im Teilbild c ist die Möglichkeit dargestellt zumindestens ein Fußende 8.1 außerhalb des Auslegerelementes 1 anzuordnen. Dazu ist auf der Oberseite 3 ein hier nach rechts sich erstreckender Träger 10 angeordnet, an dessen Ende das Fußende 8.1 der sich hier nach rechts neigenden Abspannstütze 2.1 sich befindet. Im Teilbild d kragt der Träger 11 nach beiden Seiten über, so dass beide Fußenden 8.1,8.2 der beiden Abspannstützen 2.1.2 2 außerhalb des Auslegerelementes 1 liegen.In the partial picture c, the possibility is shown to arrange at least one foot end 8.1 outside the cantilever element 1. For this, there is a here on top 3 right-hand extending bracket 10 is arranged, at the end of which is the foot end 8.1 of the guy support 2.1 which tilts to the right here. In the partial image d, the carrier 11 projects over on both sides, so that both foot ends 8.1, 8.2 of the two guy supports 2.1.2, 2 lie outside the cantilever element 1.

Ein Sonderfall ist in Figur 4 dargestellt. Hier bildet der querliegende Träger 12 selber die beiden nach rechts und nach links sich erstreckenden Abspannstützen. Diese Sonderform ist gedanklich ableitbar, wenn man dazu in Figur 2 die beiden Neigungswinkel α1 und α 2 auf 90° anwachsen lässt.A special case is shown in Figure 4. Here the transverse beam 12 itself forms the two guy supports extending to the right and to the left. This special form can be deduced mentally if the two inclination angles α1 and α 2 are increased to 90 ° in FIG. 2.

In Figur 5 ist in einer Vorder- und einer Seitenansicht ein praktisches Ausführungsbeispiel dargestellt. Das Auslegerelement ist in diesem Beispiel ein Grundkasten 13 eines Hauptauslegers eines Teleskopkranes.In Figure 5, a practical embodiment is shown in a front and a side view. In this example, the boom element is a basic box 13 of a main boom of a telescopic crane.

Als Rüsthitfe ist je eine Kolben-Zylinder-Einheit 28.1,28.2 vorgesehen, die an einem Ende an der Seitenwand 25 und mit dem anderen Ende im hälftigen Bereich der jeweiligen Abspannstütze 18.1 angeordnet ist.A piston-cylinder unit 28.1, 28.2 is provided as the set-up aid, which is arranged at one end on the side wall 25 and at the other end in the half area of the respective guy support 18.1.

Das Spannmittel, je ein Seil 29.1 ist mit einem Ende über eine Seilkausche 31.1 am Kopfbereich der Abspannstütze 18.1 befestigt. Von dort läuft es zum in Richtung Auslegerkopf angeordneten Umlenkpunkt (auch hier nicht dargestellt) und läuft zurück über ein im Kopfbereich der Abspannstütze 18.1 angeordneten Umlenkrolle 30.1 und von dort zur Winde 27.1.One end of the tensioning means, one rope 29.1 each, is attached to the head region of the guy support 18.1 by means of a rope thimble 31.1. From there it runs to the deflection point arranged in the direction of the jib head (also not shown here) and runs back over a deflection roller 30.1 arranged in the head region of the guy support 18.1 and from there to the winch 27.1.

Auf der rückwärtigen Seite im Kopfbereich der Abspannstütze 18,1 ist eine Abspannspange 32.1 angeordnet, die die rückseitige Sicherung für die jeweilige Abspannstütze 18.1 darstellt.On the rear side in the head region of the guy support 18.1, a guy clip 32.1 is arranged, which represents the rear securing for the respective guy support 18.1.

BezugszeichlisteDrawing reference list

Nr.No. Bezeichungdesignation 11 Auslegerelementjib element 2,2'2,2 ' Abspannstützeguy support 33 Oberseite AuslegerelementTop of the boom element 44 Mittellinie-WippebeneCenterline-luffing plane 55 Freies Ende AbspannstützeFree end guy support 6,76.7 Spannmittelclamping means 88th Fußendefoot 9,9'9.9 ' Seitenwand AuslegerelementSide wall bracket element 10,11,1210,11,12 Trägercarrier 1313 Grundkastenbasic box 1414 Oberseite GrundkastenTop of basic box 1515 Rahmengestellframe 16,16'16.16 ' Befestigungslaschemounting tab 1717 Unterer Träger RahmengestellLower support frame 18.1,18.218.1,18.2 Abspannstützenguy supports 1919 Oberer Träger RahmengestellUpper support frame 20.1;20.220.1; 20.2 Kolben-Zylinder-Einheit (Seitenverstellung)Piston-cylinder unit (side adjustment) 21.1,21.221.1,21.2 Außenliegender HolmExternal spar 22.1,22.222.1,22.2 Innenliegender HolmInternal spar 23.1,23.223.1,23.2 Querstrebecrossmember 24.1,24.224.1,24.2 Gelenk AbspannstützeArticulated guy support 25,25'25.25 ' Seitenwand GrundkastenSide panel basic box 26,26'26.26 ' Blechverstärkungsill reinforcement 27.1,27.227.1,27.2 Windewinch 28.1,28.228.1,28.2 Kolben-Zylinder-EinheitPiston-cylinder unit 29.1,29.229.1,29.2 Spannmittelclamping means 30.1,30.230.1,30.2 Umlenkrolleidler pulley 31.1,31.231.1,31.2 Seilkauschethimble 32.1,32.2.32.1,32.2. Abspannstangetie rod

Claims (41)

  1. A telescopic boom crane, comprising
    - a carrier,
    - a superstructure positioned to be slewed on the carrier,
    - a counterweight,
    - a boom (1) comprising a main boom with a base section (13) and at least one telescopic section extensible and retractable within it,
    characterized by
    at least one guying brace pair (2.1, 2.2; 18.1, 18.2) comprising two guying braces, wherein at least one of said guying braces (2.1, 2.2; 18.1, 18.2) is arranged on said boom (1) and inclined with respect to the luffing plane, in order to at least partially receive forces acting laterally on said boom (1), and connected to a tensioning means (6, 7; 29.1, 29.2, 32.1, 32.2) essentially extending in the longitudinal direction of said boom (1).
  2. The telescopic boom crane according to claim 1,
    characterized in that the bottom ends (8.1) of said guying braces (2.1, 2.2) are positioned on a strut (10) extending in a transverse direction to the longitudinal axis of said boom (1) and protruding beyond the latter.
  3. The telescopic boom crane according to any one of the preceding claims,
    characterized in that the free top end (5) of each guying brace (2.1, 2.2; 18.1, 18.2) is connected to either of said superstructure, said carrier, the bottom area of said boom (1), a fixed or separately guided counterweight, or the ground in the direction of the bottom end of the boom (1), via a first tensioning means (7; 32.1, 32.2), and to a selected position on said main boom (1), or a portion of a boom extension in the direction of the top end of said boom (1), via another tensioning means (6; 29.1, 29.2).
  4. The telescopic boom crane according to claim 3,
    characterized in that the free top end of each guying brace (18.1, 18.2) is connected to the top end or collar of one of the inside telescopic sections via a tensioning means (6; 29.1, 29.2).
  5. The telescopic boom crane according to claim 3,
    characterized in that the free top end of each guying brace (18.1, 18.2) is connected to a portion of a fixed or luffing fly jib of lattice sections via a tensioning means (6; 29.1, 29.2).
  6. The telescopic boom crane according to any one of the preceding claims,
       characterized in that the length of each guying brace (2.1, 2.2; 18.1, 18.2) is variable.
  7. The telescopic boom crane according to claim 6,
    characterized in that the length of each guying brace (2.1, 2.2; 18.1, 18.2) is variable in a step-wise manner.
  8. The telescopic boom crane according to claim 6,
    characterized in that the length of each guying brace (2.1, 2.2; 18.1, 18.2) is continuously variable.
  9. The telescopic boom crane according to any one of the preceding claims,
    characterized in that said tensioning means (6, 7) is a rope (29.1; 29.2) and/or a rod (32.1, 32.2).
  10. The telescopic boom crane according to any one of the preceding claims,
    characterized in that said tensioning means (6, 7; 29.1, 29.2; 32.1, 32.2) cooperates with a tensioning apparatus (27.1; 27.2).
  11. The telescopic boom crane according to any one of the preceding claims,
    characterized in that there are separately driveable tensioning apparatuses (27.1, 27.2) for the tensioning means (6, 7; 29.1, 29.2; 32.1, 32.2) of each guying brace (2.1, 2.2; 18.1, 18.2).
  12. The telescopic boom crane according to claim 10 or 11,
    characterized in that the at least one tensioning apparatus (27.1, 27.2) is positioned on either of said guying braces (18.1; 18.2), said superstructure, said carrier, said main boom (1), said counterweight or on a boom extension.
  13. The telescopic boom crane according to claim 10, 11 or 12,
    characterized in that the tensioning apparatus is a winch (27.1, 27.2) or a piston-cylinder unit.
  14. The telescopic boom crane according to any one of the preceding claims,
    characterized in that a change in the inclination of a guying brace (2.1, 2.2; 18.1, 18.2) is utilized for tensioning the associated tensioning means (6, 7; 29.1, 29.2; 32.1, 32.2).
  15. The telescopic boom crane according to any one of the preceding claims,
    characterized in that a change in the length of a guying brace (2.1, 2.2; 18.1, 18.2) is utilized for tensioning the associated tensioning means (6, 7; 29.1, 29.2; 32.1, 32.2).
  16. The telescopic boom crane according to any one of the preceding claims,
    characterized in that said guying braces (2) are positioned on the top side (3) of said boom (1).
  17. The telescopic boom crane according to any one of the preceding claims,
    characterized in that said pair of guying braces (18.1, 18.2) is arranged on said main boom in the area of the base section (13).
  18. The telescopic boom crane according to claim 17,
    characterized in that said pair of guying braces (18.1, 18.2) is arranged in the front area between the linkage of a luffing cylinder and a front support on the base section (13).
  19. The telescopic boom crane according to any one of the preceding claims,
    characterized in that the bottom ends (8.1; 8.2) of said guying braces (2.1, 2.2; 18.1, 18.2) are linked to said boom (1) in the transition area between the top side (3) and each side wall (9, 9') of the base section (13).
  20. The telescopic boom crane according to any one of the preceding claims,
    characterized in that the angle (2*α) enclosed by the two guying braces (2.1, 2.2; 18.1, 18.2) of a guying brace pair can be varied to assume various guying positions.
  21. The telescopic boom crane according to claim 20,
    characterized in that the angle (2*α) enclosed by the two guying braces (2.1, 2.2; 18.1, 18.2) of a guying brace pair is adjustable in a step-wise manner or continuously by pivoting the guying braces (2.1, 2.2; 18.1, 18.2).
  22. The telescopic boom crane according to claim 20 or 21,
    characterized in that, for pivoting, each of said guying braces (18.1; 18.2) is linked to a piston-cylinder unit (20.1; 20.2).
  23. The telescopic boom crane according to any one of the preceding claims,
    characterized in that each guying brace (18.1; 18.2) has two struts (21.1; 22.1; 21.2; 22.2) extending essentially in parallel.
  24. The telescopic boom crane according to claim 23,
    characterized in that between said struts (21.1; 22.1; 21.2; 22.2) of each of said guying braces (18.1; 18.2) a winch (27.1; 27.2) is positioned for the tensioning of said tensioning means (6, 7; 29.1, 29.2, 32.1, 32.2).
  25. The telescopic boom crane according to any one of the preceding claims,
    characterized in that at the head of the innermost telescopic section a rigid fly jib of lattice sections is mounted.
  26. The telescopic boom crane according to any one of claims 1 to 25,
    characterized in that a luffing fly jib of lattice sections with at least one luffing support is mounted at the head of the innermost telescopic section.
  27. The telescopic boom crane according to any one of claims 1 to 26,
    characterized in that for detecting a lateral deformation of the boom a measuring means is provided which is coupled to and controls a tensioning apparatus affecting the degree of tensioning of the lateral guying.
  28. The telescopic boom crane according to claim 27,
    characterized in that the lateral deformation is directly or indirectly detectable via crane parameters such as rope tension, rope length, rope extension, and via the forces acting on the boom in the form of laterally occurring wind, solar radiation and the temperatures present on the main boom.
  29. A method for guying a boom (1) of a telescopic boom crane, comprising a main boom with a base section (13) and at least one telescopic section extensible and retractable within it, wherein:
    - at least one of the guying braces (2.1, 2.2; 18.1, 18.2) of a-guying brace pair is arranged on and protrudes from said boom (1) in an inclined position with respect to the luffing plane in order to at least partially receive forces laterally applied to said boom (1), and
    - each guying brace (2.1, 2.2; 18.1, 18.2) of the pair of guying braces is connected to a tensioning means (6, 7; 29.1, 29.2, 32.1, 32.2) extending essentially in the longitudinal direction of said boom (1).
  30. The method according to claim 29,
    characterized in that the two guying braces (2.1, 2.2; 18.1, 18.2) are pivoted with respect to the boom (1) in order to adjust the angle enclosed by the guying braces (2.1, 2.2; 18.1, 28.2).
  31. The method according to any one of claims 29 or 30,
    characterized in that the free top end (5) of each guying brace (2.1, 2.2; 18.1, 18.2) is connected to either of said superstructure, said carrier, the bottom area of said boom (1), a fixed or separately guided counterweight or the ground in the direction of the bottom end of said boom (1), via a first tensioning means (7; 32.1; 32.2), and to a selected position on said main boom (1), or a portion of a boom extension in the direction of the top end of said boom (1), via another tensioning means (6; 29.1, 29.2).
  32. The method according to any one of claims 29 to 31,
    characterized in that the free top end of each guying brace (18.1, 18.2) is connected to the head or collar of the innermost telescopic section via a tensioning means (6; 29.1, 29.2).
  33. The method according to any one of claims 29 to 32,
    characterized in that the free top end of each guying brace (18.1, 18.2) is connected to a portion of a fixed or luffing fly jib of lattice sections via a tensioning means (6; 29.1, 29.2).
  34. The method according to any one of claims 29 to 33,
    characterized in that the length of each guying brace (2; 2.1, 2.2; 18.1, 18.2) is variable in a step-wise manner or continuously in order to tension said tensioning means (6; 29.1, 29.2).
  35. The method according to any one of claims 29 to 34,
    characterized in that a change in the inclination of a guying brace (2; 2.1, 2.2; 18.1, 18.2) is utilized for tensioning the associated tensioning means (6, 7; 29.1, 29.2; 32.1, 32.2).
  36. The method according to any one of claims 29 to 35,
    characterized in that said tensioning means (6, 7; 29.1, 29.2; 32.1, 32.2) is tensioned with a tensioning apparatus (27.1; 27.2).
  37. The method according to claim 36,
    characterized in that said tensioning means (6, 7; 29.1, 29.2; 32.1, 32.2) of each guying brace (2.1, 2.2; 18.1, 18.2) is tensioned by means of a separately driveable tensioning apparatus (27.1, 27.2).
  38. The method according to any one of claims 29 to 37,
    characterized in that said guying braces (18.1; 18.2) are erected by means of piston-cylinder units (28.1; 28.2).
  39. The method according to any one of claims 29 to 38,
    characterized in that each guying brace (18.1; 18.2) is laterally pivoted by means of a piston-cylinder unit (20.1; 20.2).
  40. The method according to any one of claims 29 to 39,
    characterized in that a lateral deformation of said boom (1) is detected with the aid of a measuring means and the tensioning apparatus affecting the degree of tensioning of the lateral guying is controlled correspondingly.
  41. The method according to claim 40,
    characterized in that the lateral deformation is detected directly or indirectly via crane parameters such as rope tension, rope length, rope extension, and via the forces acting on the boom in the form of laterally occurring wind, solar radiation and the temperatures present on the main boom.
EP03014531A 1999-06-28 2000-06-26 Telescopic crane Expired - Lifetime EP1354842B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE20023369U DE20023369U1 (en) 1999-06-28 2000-06-26 Telescopic crane incorporates a bottom carriage with a top carriage turning on it, a counter weight and a jib having a main jib with a base casing and a telescopic projection sliding in and out.

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE19930537 1999-06-28
DE19930537 1999-06-28
DE10022658 2000-04-28
DE10022658A DE10022658B4 (en) 1999-06-28 2000-04-28 telescopic crane
EP00250210A EP1065166B2 (en) 1999-06-28 2000-06-26 Telescopic crane

Related Parent Applications (1)

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US11130659B2 (en) 2017-01-20 2021-09-28 Tadano Demag Gmbh Telescoping jib comprising a rod guying system for a mobile crane and guying method therefor

Also Published As

Publication number Publication date
DE10022600B4 (en) 2007-09-27
EP1354842A3 (en) 2003-11-12
US6550624B1 (en) 2003-04-22
DE10022600A1 (en) 2001-07-19
DE10022658A1 (en) 2001-03-15
EP1354842A2 (en) 2003-10-22
DE50003246D1 (en) 2003-09-18
DE10022658B4 (en) 2007-10-04
DE50009145D1 (en) 2005-02-03

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