EP3045418A1 - Crane and supporting unit for such a crane - Google Patents

Crane and supporting unit for such a crane Download PDF

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Publication number
EP3045418A1
EP3045418A1 EP15193106.0A EP15193106A EP3045418A1 EP 3045418 A1 EP3045418 A1 EP 3045418A1 EP 15193106 A EP15193106 A EP 15193106A EP 3045418 A1 EP3045418 A1 EP 3045418A1
Authority
EP
European Patent Office
Prior art keywords
crane
support unit
superstructure
support
axis
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.)
Pending
Application number
EP15193106.0A
Other languages
German (de)
French (fr)
Inventor
Martin Zwifka
Benjamin Schaal
Fritz-Botho Köster
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.)
Terex Global GmbH
Original Assignee
Terex Cranes Germany GmbH
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
Priority to DE102015200358.2A priority Critical patent/DE102015200358A1/en
Application filed by Terex Cranes Germany GmbH filed Critical Terex Cranes Germany GmbH
Publication of EP3045418A1 publication Critical patent/EP3045418A1/en
Pending legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66CCRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00Cranes 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
    • B66C23/18Cranes 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 specially adapted for use in particular purposes
    • B66C23/36Cranes 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 specially adapted for use in particular purposes mounted on road or rail vehicles; Manually-movable jib-cranes for use in workshops; Floating cranes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66CCRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00Cranes 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
    • B66C23/62Constructional features or details
    • B66C23/72Counterweights or supports for balancing lifting couples
    • B66C23/74Counterweights or supports for balancing lifting couples separate from jib
    • B66C23/76Counterweights or supports for balancing lifting couples separate from jib and movable to take account of variations of load or of variations of length of jib
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66CCRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00Cranes 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
    • B66C23/62Constructional features or details
    • B66C23/72Counterweights or supports for balancing lifting couples
    • B66C23/78Supports, e.g. outriggers, for mobile cranes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66CCRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00Cranes 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
    • B66C23/62Constructional features or details
    • B66C23/72Counterweights or supports for balancing lifting couples
    • B66C23/78Supports, e.g. outriggers, for mobile cranes
    • B66C23/80Supports, e.g. outriggers, for mobile cranes hydraulically actuated

Abstract

A crane comprises an undercarriage (3), a superstructure (8) arranged on the undercarriage (3), a rotary joint (7) for rotatably supporting the superstructure (8) on the undercarriage (3) about an axis of rotation (9) and on the Uppercarriage (8) mounted support unit (20) for increasing a distance of a tilting edge of the rotation axis (9), so that the crane (1) has increased stability and increased load capacity.

Description

  • The content of the German patent application DE 10 2015 200 358.2 is incorporated herein by reference.
  • The invention relates to a crane and a support unit for such a crane.
  • The DE 199 44 927 A1 discloses a crane with a boom which is guyed by means of a counter-jib and a counterweight trolley.
  • The US 3,398,967 discloses a crane with a leveling device. The US 4,275,902 discloses a crane with an auxiliary support. The DE 10 2011 119 655 A1 discloses a crane with an additional support.
  • It is an object of the present invention to provide a crane in which the load, in particular in the main boom operation, is increased and / or which has improved stability, in particular in a direction opposite to the main boom.
  • This object is achieved by a crane with the features of claim 1 and with a support unit for a crane according to claim 15. According to the invention, it has been recognized that a support unit makes it possible to increase a distance of a tilting edge of the crane from a rotation axis. The tilting edge is a virtual line that connects the crane's support points. The connection of the tilting edges forms the base of the crane. The fact that the distance of the tilting edge is increased to the axis of rotation, the footprint is increased. An enlarged footprint causes increased stability. In particular, one may be due to a load break resulting force can be compensated. Such a force must be considered when dimensioning the stability of the crane. A rearward overturning moment caused by this force is to be added to a moment caused by a superstructure counterweight. The sum of these moments can be compensated by the increased footprint. The increased footprint of the crane also allows additional superstructure counterweight to be provided, thus stacked on the uppercarriage. A deformation of the superstructure as a result of the superstructure counterweight causes an inclination of the superstructure. An initially floating, so spaced from the ground arranged support unit touches the surface due to the inclination of the upper carriage. The superstructure with the superstructure counterweight is supported on the ground. As a result of the support of the deformed superstructure, it is possible to provide additional superstructure counterweight on the superstructure, which is supported by means of the support unit. The support unit thus makes it possible to stack up an increased amount of superstructure counterweight, since deformation of the superstructure due to the superstructure counterweight is intercepted. In addition, the increased distance of the tilting edge to the axis of rotation, with the result that more superstructure counterweight can be stacked, that the load capacity of the crane is increased. The additional superstructure counterweight increases a counter moment of the crane. The crane enables uncomplicated increased stability and at the same time an increased load capacity. In particular, a tilting of the crane is prevented in a load rupture. In particular, the tilting of the crane is prevented during a set-up of Oberwagengegengewicht. In particular, the footprint of the crane is set by the undercarriage, which is designed in particular rectangular. By increasing the distance of the tilting edge to the axis of rotation by the support unit, the tilting edge is outside the rectangular contour of the undercarriage arranged, in particular along a direction of the longer side edges of the rectangular contour. The crane comprises an undercarriage and a superstructure arranged thereon, which is mounted by means of a rotary connection rotatable about the axis of rotation on the undercarriage. The crane may further comprise a boom for lifting a load. The boom is pivotally mounted in particular on the upper carriage. The boom is in particular pivotable about a horizontally arranged boom pivot axis. The support unit serves in particular during transport of the crane as a stabilizing element, for example on a low loader. Other proppants are unnecessary. The crane is in a safe transport position. In particular, the crane according to the invention has advantages over a crane with Superliftmast to Hauptauslegerabspannung. In particular, the effort for equipping and transporting the Superliftmasts is unnecessary. Compared to the crane with Superliftmast the Mindestdurchschwenkradius of the crane according to the invention is reduced. It is unnecessary to extend crawler support to form an enlarged support surface. Extending the crawler support is costly and requires increased space on the job site. In the crane according to the invention, an increased central ballast is dispensable. The preparation of central ballast, which is arranged in particular concentric to the axis of rotation of the crane, is time-consuming. The crane is in particular a mobile crane. The undercarriage may have a crawler chassis or a road chassis. The crane may, instead of a mobile undercarriage, also have a non-mobile base or a foundation against which the superstructure is rotatably arranged. The pedestal or the foundation are also referred to as Pedestalgestell. The crane can be a lattice boom crane or a telescopic crane.
  • A crane in which the support unit has at least one support cylinder, allows immediate support on the ground. It is possible to provide more than one support cylinder, in particular two support cylinders. The support cylinders are in particular arranged symmetrically with respect to a center plane, which is oriented perpendicular to the rocker axis about which a boom is pivotably articulated to the crane. An overall line of action of the support cylinders is arranged parallel to the center plane and in particular in the center plane. In this case, the lateral stability with respect to the center plane is increased. In particular, the crane has an increased lateral stability with respect to a transverse load in a direction transverse to the seesaw plane. It is also conceivable that the support cylinders are arranged asymmetrically with respect to the center plane. In any case, it is possible to variably attach the support cylinders to the crane with respect to their distance from the center plane. For example, a transverse to the center plane, ie parallel to the rocker axis, in particular horizontally oriented linear guide is provided. Different support cylinder positions with respect to the center plane are infinitely variable or can be fixed by means of a defined grid.
  • In a crane in which the support unit has a support element, in particular in the form of a support plate, the support effect, ie the support, is improved. The support force is reliably dissipated into the ground. The support unit is reliably supported on the ground.
  • A crane in which the support unit has a height adjustment element allows adaptation of a vertical distance of the support unit from the ground. A height adjustment element is for example a hydraulic cylinder. There are also mechanical height adjustment elements such as a spindle drive, a rack drive or a scissors mechanism conceivable. Alternatively, electrical or electronic height adjustment elements in the form of a linear drive with electric motor are possible.
  • A crane, in which the support unit relative to the axis of rotation of the boom is arranged opposite to the upper carriage, allows an advantageous compensation of the additional superstructure counterweight. In particular, the load case of a load break, in which a tilting moment is caused on the crane, advantageously intercepted. An opposing arrangement of support unit and boom relative to the axis of rotation is given in the context of the invention, for example, when the boom are arranged at a front end of the upper carriage and the support unit at a front end opposite the rear end of the upper carriage. The front and rear end of the upper carriage are arranged in particular at the respective shorter edge of a rectangular contour of the upper carriage in a plane perpendicular to the axis of rotation. The support unit, which in particular has exactly one support cylinder, can be arranged, for example, relative to the axis of rotation diametrically opposite to the main boom on the uppercarriage. In particular, when the support unit has a plurality of support cylinders, the support cylinders can be arranged at an arbitrary angle to the rocker plane with respect to the boom. The rocker plane is oriented perpendicular to a boom rocker axis. For example, the support cylinders are arranged at an angle to the rocker plane starting from the boom of 95 ° to 265 °, in particular in an angular range of 105 ° to 255 °, in particular in an angular range of 120 ° to 240 °, in particular in an angular range of 135 ° arranged to 225 °, in particular in an angular range of 150 ° to 210 ° and in particular from 165 ° to 195 °. In this arrangement, the support unit is in particular exclusively at the respective shorter edge of the rectangular contour the superstructure arranged. In particular, the support cylinders are arranged with respect to the main boom on the superstructure, that a resulting line of action of the vertical support is arranged diametrically opposite the boom. This is for example the case when exactly two support cylinders are provided, which are arranged mirror-symmetrically to the center plane. The support unit, in particular the support cylinders, may alternatively or additionally also be arranged on the respective longer edges of the rectangular contour of the upper carriage. A connecting line of a respective support cylinder to the superstructure is then oriented transversely, in particular vertically, to the rocker plane. Such support units serve in particular an improved lateral support of the superstructure.
  • A crane in which the support unit is attached directly to the superstructure, allows an uncomplicated and immediate support. The crane is uncomplicated.
  • Alternatively, the support unit can be fastened to the superstructure by means of an intermediate element, in particular in the form of an intermediate frame. The support unit is in this case indirectly attached to the superstructure. The arrangement of the support unit is flexible in this case.
  • A crane in which the intermediate element along a length change direction is made variable in length, simplifies a flexible length-changed arrangement of the intermediate element. The length change direction is oriented in particular parallel to a plane perpendicular to the axis of rotation. The direction of length change is in particular parallel to the ground and in particular horizontally oriented. In particular, the support unit is attached to the intermediate element. To the variable-length Execution of the intermediate element is used in particular a length change drive, which may be designed for example as a telescopic cylinder, as a cable, as a rack drive and / or as a linear drive.
  • A crane, in which the support unit has a displacement element for a displacement of the support unit along the ground, allows a possibility of traveling of the crane with support unit on the ground. In particular, more than one displacement element may be provided on the support unit. The displacement element is arranged around a, in particular horizontally oriented, rotation axis rotatable and / or slidable relative to the ground on the support unit. The displacement element is in particular rotatable about a, in particular vertically oriented, longitudinal axis of a support cylinder. In addition, the displacement element may have a displacement element drive. The displacement element may be a wheel or a caterpillar or a support skid. The displacement element can also be designed as a sliding block.
  • A crane in which the support unit between a working position and a transport position is arranged displaceable on the superstructure, allows a flexible and advantageous conversion from the working position to the transport position. In particular, the support unit is hinged on the upper carriage, so pivotally mounted, in particular about a vertical pivot axis, by means of a folding mechanism.
  • A crane in which the support unit is arranged in an unloaded state of the crane at a distance to the ground, allows flexible handling of the crane, in particular a method of the crane with mounted support unit. At the same time a secure support is ensured when loading the superstructure with a superstructure counterweight. In particular, the distance of the support unit to the substrate is variably adjustable. The distance between the support unit and the ground in unloaded condition of the crane is a measure of the permissible deformation of the superstructure, from which additional support of the superstructure, so the crane, via the support unit on the ground.
  • A crane in which a deformation of the upper carriage causes a tendency such that the support unit is supported on the ground, ensures a reliable support of the crane, even with additional superstructure counterweight.
  • A crane with a, in particular variably adjustable, external load, upon reaching the support unit lifts from the ground, allows increased counter-torque in the load and at the same time a free rotation of the upper carriage relative to the undercarriage.
  • A crane with superstructure counterweight arranged on the superstructure enables a payload increase. In particular, the uppercarriage counterweight is arranged in a plane perpendicular to the axis of rotation between the axis of rotation and the support unit. In particular, the superstructure counterweight, unlike a central ballast, is arranged off-center relative to the axis of rotation. In particular, the uppercarriage counterweight with respect to the rotational axis is arranged on the uppercarriage so that it can exert a counter-torque with respect to a load torque which has been caused by an outer load on the boom. Characterized in that the superstructure counterweight is arranged displaceably in the radial direction with respect to the axis of rotation, the counter-torque caused by the superstructure counterweight can be adjusted variably. In particular, a drivable counterbalance shifting unit is provided to allow the superstructure counterweight, in particular automated, drivable to relocate relative to the axis of rotation. In particular, the superstructure counterweight is arranged linearly displaceable on the upper carriage.
  • A support unit can be retrofitted as a retrofit kit on a crane. The support unit can be attached to the superstructure as a retrofittable support unit. It is alternatively possible to form the superstructure itself as a retrofit kit, wherein the superstructure, in particular with an integrated support unit, can be retrofitted. This makes it possible to transfer the crane in a crane according to the invention. The benefits for the support unit correspond to the advantages of the crane, to which reference is hereby made.
  • A method for operating a crane comprises, in particular, the method steps of providing a crane with an undercarriage, with a superstructure arranged on the undercarriage, with a revolving connection for the rotatable mounting of the superstructure on the undercarriage about an axis of rotation and with a support unit mounted on the superstructure for enlarging a distance of a tilting edge of the axis of rotation, so that the crane has increased stability and increased load capacity. Furthermore, the method step is provided that the crane is arranged in an unloaded state with the support unit with a distance from the ground different from zero. Furthermore, the method step is provided, that the crane is supported in a load case, in particular upon reaching a, in particular adjustable, defined load on the ground, in particular by resting with a support element on the ground. A load case is given, for example, during a load rupture and / or during a set-up of additional superstructure counterweight.
  • Further advantages, features and details of the invention will be explained in more detail for embodiments with reference to the drawing. In this show:
  • Fig. 1
    a schematic side view of a crane according to the invention with a support unit,
    Fig. 2
    a view from behind of the crane according to Fig. 1 .
    Fig. 3
    an enlarged detail view according to Fig. 1 a crane of a further embodiment,
    Fig. 4
    a Fig. 3 corresponding representation of the crane with additional superstructure counterweight,
    Fig. 5
    a schematic representation of a footprint of the mobile crane in Fig. 4 .
    Fig. 6
    a Fig. 3 corresponding representation of a crane according to a further embodiment,
    Fig. 7
    a view from the back of the crane in Fig. 6 .
    Fig. 8
    a Fig. 7 corresponding representation of a crane according to a further embodiment,
    Fig. 9
    a Fig. 6 corresponding representation of a crane according to a further embodiment,
    Fig. 10
    a view from behind of the crane according to Fig. 9 .
    Fig. 11
    a Fig. 10 corresponding representation of a crane according to a further embodiment,
    Fig. 12
    a representation of the crane according to Fig. 9 in a transport arrangement on a low loader,
    Fig. 13
    a Fig. 9 corresponding representation of a crane according to a further embodiment,
    Fig. 14
    a view from behind of the crane according to Fig. 13 .
    Fig. 15
    a Fig. 14 corresponding view of a crane according to another embodiment,
    Fig. 16
    a Fig. 13 corresponding view of a crane according to another embodiment,
    Fig. 17
    a view from behind of the crane according to Fig. 16 .
    Fig. 18
    a Fig. 17 corresponding view of a crane according to another embodiment, and
    Fig. 19
    a Fig. 6 corresponding view of a crane according to another embodiment.
  • An in Fig. 1 and 2 schematically illustrated crane 1 is a mobile crane. The crane 1 is mobile on a ground 2. Furthermore, the crane 1 a mobile undercarriage 3, which according to the embodiment shown has a central piece 4 and on both sides attached thereto crawler support 5. The crawler tracks 5 define a direction of travel 6. According to Fig. 1 the direction of travel 6 is directed horizontally from right to left. Instead of the crawler tracks 5 can be provided for drivability of the crane 1 and a road gear.
  • About a rotary joint 7, an upper carriage 8 is rotatably mounted on the undercarriage 3. The rotary joint 7 defines an axis of rotation 9 about which the superstructure 8 is rotatable. The axis of rotation 9 is oriented perpendicular to the substrate 2 and in particular aligned vertically.
  • On the superstructure 8, a boom 10 is pivotally articulated about a boom pivot axis 11. The boom pivot axis 11 is oriented perpendicular to the axis of rotation 9 and perpendicular to the direction of travel 6. The boom pivot axis 11 is oriented in particular horizontally. The boom 10 has a boom longitudinal axis 12, which is pivoted relative to the horizontal 13 by a rocking angle α. According to the embodiment shown, the rocking angle α is about 45 °. Typically, the rocking angle α is between -20 ° and 90 °. In the negative angle range between -20 ° and 0 ° of the boom 10 is below the horizontal 13, that is arranged between the ground and he horizontal 13. This is the case, for example, at the beginning of a set-up process.
  • The angle α is followed by a guy angle, which is arranged between the boom longitudinal axis 12 and a guy clamp 14. This guy angle is according to the embodiment shown about 120 °. The sum of rocking angle and clamping angle can be in the illustrated crane 1 in an angular range of -20 ° to 180 °.
  • On the superstructure 8, a guy truss 14 is also provided, which serves over a Einziehwerksseil 15 and a main boom 16 for bracing the jib 10. The boom 10 is a main boom. The Hauptauslegerabspannungen 16 are designed as guy ropes and engage a boom tip, not shown, of the boom 10 at.
  • At the superstructure 8 a superstructure counterweight 17 is arranged. The uppercarriage counterweight 17 has a plurality of counterweight plates 18, which are stacked on the superstructure 8 are arranged. For space and / or stability reasons, as in Fig. 2 illustrated two stacks of counterweight plates 18 may be arranged at the edge above the middle part 4 of the undercarriage 3. The uppercarriage counterweight 17 is arranged offset along the direction of travel 6 to the axis of rotation 9. In particular, the uppercarriage counterweight 17 is arranged along the direction of travel 6 behind the axis of rotation 9. The uppercarriage counterweight 17 is arranged along the direction of travel 6 in a rear region of the uppercarriage 8.
  • The boom pivot axis 11 is arranged in a front region of the superstructure 8. The superstructure 8 has a perpendicular to the rotation axis 9 oriented, rectangular contour, wherein the two shorter edges of the rectangle parallel to the boom pivot axis 11 and the two longer edges of the rectangle are oriented parallel to the direction of travel 6.
  • A weight force caused by the uppercarriage counterweight 17 causes a counter torque with respect to the rotary joint 7, which is one of counteracts the boom 10 with a load possibly attached thereto load moment.
  • In an oriented along the direction of travel 6 rear portion of the upper carriage 8, an intermediate element 19 is arranged. The intermediate element 19 is designed as a supplementary frame. The intermediate element 19 is attached directly to the superstructure 8. On the intermediate element 19, a support unit 20 is attached. The support unit 20 is indirectly fastened to the superstructure 8 by means of the intermediate element 19. The support unit 20 comprises a support cylinder 21, which is designed as a hydraulic cylinder as height adjustment. On an underside of the support cylinder 21, a support element in the form of a support plate 22 is provided.
  • In the in Fig. 1 As shown, the crane 1 is in an unloaded condition, ie no load is placed on the boom 10. In this unloaded state, the support unit 20 is arranged floating on the superstructure 8. This means that the support unit 20 is arranged at a distance D from the ground. The support unit 20 may also be arranged lying on the ground. In this case, the distance D is equal to zero. The size of the definable distance D is particularly dependent on the number of applied counterweight plates, that is on the size of the force caused by the Oberwagengegengewicht 17 weight force, which causes a deflection of the upper carriage 8. In addition, the distance D in a variable-length design of a support cylinder 21 is adjustable. It is also conceivable that the support unit 20 is permanently made in contact with the ground.
  • The support unit 20 has exactly one support cylinder 21 which is centered on a width direction of the crane 1 on the intermediate element 19th is arranged. The support cylinder 21 and in particular the support unit 20 itself are arranged symmetrically with respect to a center plane of the crane 1. The middle plane is oriented vertically and contains the axis of rotation 9.
  • Another embodiment of the invention is in Fig. 3 to 5 shown. Components corresponding to those described above with reference to Fig. 1 and 2 have already been explained, have the same reference numbers and will not be discussed again in detail.
  • For the in Fig. 3 schematically illustrated crane 23 are different functional components omitted for purely illustrative reasons. This applies, for example, the boom itself and the bracing for the boom. Also, the superstructure counterweight, which can be pre-assembled as standard on the superstructure 8, especially in an in Fig. 3 shown unloaded state of the crane 23 is not shown. The essential difference of the crane 23 compared to the previous embodiment is that the support unit 20 is attached directly to the superstructure 8. An intermediate element is unnecessary.
  • A loaded condition of the crane 23 is in Fig. 4 shown. A load, for example, by attaching a superstructure counterweight 17 done. The uppercarriage counterweight 17 is arranged eccentrically relative to the rotary joint 7. The superstructure counterweight 17 causes a counter-torque. The weight of the superstructure counterweight 17 leads to a deformation of the superstructure 8. The deformation of the superstructure 8 is in Fig. 4 shown in a solid line. The original, undeformed contour of the superstructure 8 is in Fig. 4 shown in dashed lines. The deformation of the superstructure 8 causes the support unit 20 is pressed with the support plate 22 down to the ground 2 out. Upon reaching a variable adjustable load for the superstructure counterweight 17, the deformation of the superstructure 8 is so large that the support unit 20 rests with the support plate 20 on the ground 2. In this state, an additional support for the crane 23 by the support unit 20 results.
  • The resulting support surface 24 is in Fig. 5 shown schematically. The support surface 24 is rectangular in shape and results from the size and arrangement of the crawler tracks 5. Centrally within the rectangular support surface 24, the axis of rotation 9 is arranged. The axis of rotation 9 may also be arranged eccentrically relative to the rectangular support surface 24. In the direction of travel 6 in front of the axis of rotation 9, the boom pivot axis 11 is arranged. Contrary to the direction of travel 6 behind a rear end of the rectangular support surface 24, the support unit 20 is arranged. Once a load of the crane 23, as in Fig. 4 shown, an additional support of the crane 23 takes place in the support unit 20. As a result, the original, with an original distance b to the rotation axis 9 arranged, rear tilting edge 25 is displaced against the direction of travel 6 to the rear. The new, rearwardly displaced tilting edge 26 intersects the support unit 20. By means of the support unit 20, a distance d of the new tilting edge 26 from the rotation axis 9 is increased. The following applies: d> b.
  • The mode of operation of the crane 23 according to the invention will be explained in more detail below. Starting from an unloaded state according to Fig. 3 , in the superstructure counterweights, not shown, may be provided as a base ballast, a load of the crane, for example, by the fact that additional, in Fig. 4 shown superstructure counterweight 17 is arranged on the superstructure 8. The additional superstructure counterweight 17 causes a deformation of the superstructure 8. This deformation can be tolerated and supported by the support unit 20 by the superstructure 8 is deformed so that the support unit 20 rests against the ground 8. The crane is additionally supported by the support unit 20. The fact that additional superstructure counterweight 17 is made possible, the superstructure 8 allows an increased counter-torque, which has an increase in load of the crane 23 result. As above with reference to Fig. 5 already explained, the superstructure 23 in addition to an enlarged support surface by the rear tilting edge is arranged at an increased distance d to the axis of rotation 9. The support unit 20 also ensures that, in the event of a load break, a rearward dynamic which adds to the counter-torque caused by the uppercarriage counterweight 17. The sum of these two rearwardly directed counter torques is intercepted by the support unit 20 on the superstructure 8. The stability of the crane 23 is increased.
  • Another embodiment of the invention is in 6 and 7 shown. Components corresponding to those described above with reference to Fig. 1 to 5 have already been explained, have the same reference numbers and will not be discussed again in detail.
  • Significant difference of the crane 27 according to the above embodiments is that the support unit 20 already in the unloaded state according to Fig. 6 supported on the ground 2. The supporting effect occurs immediately.
  • Another embodiment of the invention is in Fig. 8 shown. Components corresponding to those described above with reference on Fig. 1 to 7 have already been explained, have the same reference numbers and will not be discussed again in detail.
  • The crane 28 substantially corresponds to the crane 27, wherein the support unit 29 is designed such that it has two support cylinders 21. Based on the center plane containing the axis of rotation 9, the two support cylinders 21 of the support unit 29 are arranged symmetrically. The use of two support cylinders 21 allows for higher lateral stability under load oriented transverse to the mid-plane.
  • Another embodiment of the invention is in FIGS. 9 and 10 shown. Components corresponding to those described above with reference to Fig. 1 to 8 have already been explained, have the same reference numbers and will not be discussed again in detail.
  • The crane 30 substantially corresponds to the crane 1 according to Fig. 1 , The main difference is that the intermediate element 19 is designed to be variable in length along a length change direction. According to the embodiment shown, the longitudinal change direction 31 of the direction of travel 6 is oriented opposite. The longitudinal change direction 31 is in particular parallel to the substrate 2 and in particular oriented horizontally. To change the length of the intermediate element 19, a not shown telescopic cylinder may be provided.
  • The positioning of the new tilting edge 26 thus takes place in particular by defining the vertical distance D between the underside of the support plate 22 and the substrate 2 and / or the horizontal distance d of the support unit 20 from the axis of rotation 9.
  • According to the variable-length design of the intermediate element 9, the horizontal distance d can be set variably. For example, a minimum horizontal distance d 1 and a maximum horizontal distance d 2 is possible. In particular, intermediate distances are infinitely variable adjustable.
  • Another difference according to the previous embodiments is that a support runner 32 is provided on the underside of the support cylinder 21. The support runner 32 can be identical to the support plate 12 in the side view 9. In the view of the crane 30 from behind according to Fig. 10 It is clear that the support runner 32 has a relation to the support plate 22 increased width.
  • Another embodiment of the invention is in Fig. 11 shown. Components corresponding to those described above with reference to Fig. 1 to 10 have already been explained, have the same reference numbers and will not be discussed again in detail.
  • Only difference according to the in Fig. 10 shown crane 30 is that the crane 33 has a support unit 29 with two support cylinders 21, on the underside of each a support runner 32 is provided.
  • Fig. 12 shows a transport arrangement of the crane 30 according to FIGS. 9 and 10 , The crane 30 is in a transport state, ie, the uppercarriage counterweight 17 is disassembled. Also, the boom is dismantled. The crane 30 is arranged on a low loader 34. The support unit 20 serves to support the crane 30, in particular the superstructure 8, on the low loader 34. The crane 30 is in a safe, reliable transport arrangement. Unintentional release of the transport arrangement is prevented. Of course, it is also possible that for supporting the superstructure 8 on the low loader 34 instead of the support skid 32, a support plate 22 can be used.
  • Another embodiment of the invention is in FIGS. 13 and 14 shown. Components corresponding to those described above with reference to Fig. 1 to 12 have already been explained, have the same reference numbers and will not be discussed again in detail.
  • Significant difference from the above embodiments is that the support unit 35 has a displacement element in the form of driven support wheels. It is also conceivable that the displacement element 36 has no drive, but at least about a horizontal axis of rotation 38 is rotatably mounted on a surface facing the ground end of the support cylinder 21. The displacement elements 36 allow a displacement and / or pivoting of the superstructure 8 about the rotation axis 9 relative to the undercarriage 3. A rotational movement of the upper carriage can be supported by driven support wheels.
  • The displacement members 36 are rotatably mounted with respect to a longitudinal axis of the support cylinder 21. At the in Fig. 14 shown arrangement in which the displacement elements 36 are arranged tangentially to a circular path about the longitudinal axis 9 of the crane 37, a pivoting movement of the upper carriage 8 is ensured even when the ground contact of the support unit 35.
  • At another, in Fig. 14 Not shown arrangement displacement elements 36 which are rotated by 90 ° about the vertical longitudinal axis of the support cylinder 21, the displacement elements 36 are parallel to the crawler tracks 5 oriented. In such an arrangement a straight ahead of the crane 37 is possible and in particular supported possible.
  • Another embodiment of the invention is in Fig. 15 shown. Components corresponding to those described above with reference to Fig. 1 to 14 have already been explained, have the same reference numbers and will not be discussed again in detail.
  • The essential difference of the crane 40 relative to the crane 37 is that two support cylinders 21 are arranged with displacement elements 36 mounted thereon.
  • According to the above explanations, the displacement elements 36 are rotatably arranged on the support cylinders 21 about their respective longitudinal axis. Possible arrangements of the displacement elements 36 are in Fig. 15 shown as an example. The displacement elements 36 are made flexible and allow support for a driving and / or rotational movement of the crane 37th
  • Another embodiment of the invention is in FIGS. 16 and 17 shown. Components corresponding to those described above with reference to Fig. 1 to 15 have already been explained, have the same reference numbers and will not be discussed again in detail.
  • Significant difference of crane 41 compared to in FIGS. 13 and 14 shown embodiment is that the displacement elements are designed as drivable support beads 39.
  • In a further embodiment of the crane 42 according to Fig. 18 in which two support cylinders are provided in the support unit, the support beads 39 have a reduced length.
  • Another embodiment of the invention is in Fig. 19 shown. Components corresponding to those described above with reference to Fig. 1 to 18 have already been explained, have the same reference numbers and will not be discussed again in detail.
  • Significant difference of crane 43 compared to in Fig. 6 illustrated crane 27 is the displaceability of the superstructure counterweight 17 in a radial direction relative to the axis of rotation 9. In Fig. 19 a first radial distance r 1 is shown by solid lines. A potential second radial distance r 2 , which is greater than the first radial distance r 1 , is shown in dashed line. According to the embodiment shown, the radial displaceability of the superstructure counterweight 17 is given by means of a telescopic tube 44, which is telescopically mounted in the superstructure 8 of the crane 43. It is also conceivable that the superstructure counterweight 17 is arranged displaceably on a separate carriage on the superstructure 8. The nature of the radial displacement does not matter in this regard. It is essential that the loadable counter-torque is variably adjustable by the displaceability of the superstructure counterweight 17.
  • It is conceivable, the displaceability of the superstructure counterweight 17 in particular with the variable-length design of the intermediate element 19 of the crane 27 according to Fig. 6 to combine.
  • As a result, the flexibility in influencing a possible setting of a counter-torque is increased.

Claims (15)

  1. Including crane
    a. an undercarriage (3),
    b. a superstructure (8) arranged on the undercarriage (3),
    c. a rotary joint (7) for rotatably supporting the superstructure (8) on the undercarriage (3) about an axis of rotation (9),
    d. a support unit (20; 29; 35) mounted on the uppercarriage (8) for increasing a distance (d) of a tilting edge (26) from the rotation axis (9) such that the crane (1) has increased stability and increased load capacity.
  2. Crane according to claim 1, characterized in that the support unit (20; 29; 35) has at least one support cylinder (21).
  3. Crane according to one of the preceding claims, characterized in that the support unit (20; 29; 35) has a support element, in particular a support plate (22).
  4. Crane according to one of the preceding claims, characterized in that the support unit (20; 29; 35) has a height adjustment element.
  5. Crane according to one of the preceding claims, characterized in that the support unit (20; 29; 35) with respect to the axis of rotation (9) a boom (10) opposite to the upper carriage (8) is arranged.
  6. Crane according to one of the preceding claims, characterized in that the support unit (20; 29; 35) is fastened directly to the superstructure (8).
  7. Crane according to one of claims 1 to 5, characterized in that the support unit (20; 29; 35) is fastened to the upper carriage (8) by means of an intermediate element (19).
  8. Crane according to claim 7, characterized in that the intermediate element (19) along a length change direction (31) is made variable in length.
  9. Crane according to one of the preceding claims, characterized in that the support unit (20; 29; 35) has a displacement element (36; 39) for displacing the support unit (20; 29; 35) along the ground (2).
  10. Crane according to one of the preceding claims, characterized in that the support unit (20; 29; 35) can be arranged displaceably between a working position and a transport position on the superstructure (8).
  11. Crane according to one of the preceding claims, characterized in that the support unit (20) in an unloaded state of the crane (1; 23) with a, in particular variably adjustable, distance (D) to the substrate (2) is arranged.
  12. Crane according to claim 11, characterized in that a deformation of the upper carriage (8) takes place in such a way that the support unit (20) is supported on the ground (2).
  13. Crane according to claim 11 or 12, characterized by a, in particular variably adjustable, external load, upon reaching the support unit (20) from the ground (2) lifts.
  14. Crane according to one of the preceding claims, characterized by a superstructure counterweight (17) which is arranged in particular along a direction of travel (6) between the rotation axis (9) and the support unit (20; 29; 35), wherein the superstructure counterweight (17) in particular in Radial direction with respect to the axis of rotation (9) is arranged displaceably.
  15. A crane support unit (20; 29; 35) according to any one of the preceding claims, wherein the support unit (20; 29; 35) for increasing a distance (d) of a tilting edge (26) from the rotation axis (9) on the superstructure (8). attached or integrated in the superstructure (8).
EP15193106.0A 2015-01-13 2015-11-05 Crane and supporting unit for such a crane Pending EP3045418A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE102015200358.2A DE102015200358A1 (en) 2015-01-13 2015-01-13 Crane and support unit for such a crane

Publications (1)

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EP3045418A1 true EP3045418A1 (en) 2016-07-20

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US (1) US9950913B2 (en)
EP (1) EP3045418A1 (en)
CN (1) CN105776039B (en)
AU (1) AU2015268653B2 (en)
BR (1) BR102015030534A2 (en)
DE (1) DE102015200358A1 (en)

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Also Published As

Publication number Publication date
BR102015030534A2 (en) 2016-09-27
AU2015268653A1 (en) 2016-07-28
CN105776039A (en) 2016-07-20
CN105776039B (en) 2018-05-29
DE102015200358A1 (en) 2016-07-14
AU2015268653B2 (en) 2019-08-22
US20160200556A1 (en) 2016-07-14
US9950913B2 (en) 2018-04-24

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