EP3448796B1 - Grue comprenant un dispositif de déplacement de contrepoids et procédé de déplacement d'un contrepoids sur une grue - Google Patents

Grue comprenant un dispositif de déplacement de contrepoids et procédé de déplacement d'un contrepoids sur une grue Download PDF

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Publication number
EP3448796B1
EP3448796B1 EP17735518.7A EP17735518A EP3448796B1 EP 3448796 B1 EP3448796 B1 EP 3448796B1 EP 17735518 A EP17735518 A EP 17735518A EP 3448796 B1 EP3448796 B1 EP 3448796B1
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EP
European Patent Office
Prior art keywords
counterweight
unit
crane
framework
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.)
Active
Application number
EP17735518.7A
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German (de)
English (en)
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EP3448796A1 (fr
Inventor
Alfons Weckbecker
Martin Zwifka
Thorsten HELWES
Fritz-Botho Köster
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Tadano Demag GmbH
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Tadano Demag GmbH
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Publication of EP3448796A1 publication Critical patent/EP3448796A1/fr
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    • 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
    • B66C23/72—Counterweights or supports for balancing lifting couples
    • B66C23/74—Counterweights or supports for balancing lifting couples separate from jib
    • B66C23/76—Counterweights 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
    • 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
    • B66C23/18—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 specially adapted for use in particular purposes
    • B66C23/36—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 specially adapted for use in particular purposes mounted on road or rail vehicles; Manually-movable jib-cranes for use in workshops; Floating cranes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C2700/00—Cranes
    • B66C2700/03—Cranes with arms or jibs; Multiple cranes
    • B66C2700/0321—Travelling cranes
    • B66C2700/0357—Cranes on road or off-road vehicles, on trailers or towed vehicles; Cranes on wheels or crane-trucks
    • B66C2700/0364—Cranes on road or off-road vehicles, on trailers or towed vehicles; Cranes on wheels or crane-trucks with a slewing arm
    • B66C2700/0371—Cranes on road or off-road vehicles, on trailers or towed vehicles; Cranes on wheels or crane-trucks with a slewing arm on a turntable

Definitions

  • the invention relates to a crane with a counterweight adjustment device and a method for adjusting a counterweight on such a crane.
  • US 2013/0 161 278 A1 discloses the displacement of a counterweight by means of a hydraulic cylinder on a crane superstructure.
  • the displacement path i.e. the adjustable counterweight radius, is limited and in particular depends on the travel of the hydraulic cylinder.
  • the British patent application GB 2 442 139 A relates to a camera crane with a telescopic arm and a counterweight assembly that includes a slidable counterweight carrier to compensate for the movements of the camera and prevent the camera crane from tipping over.
  • the patent EP 0 368 463 B1 relates to a crane with a counterweight support arm, on which a received counterweight can be moved by means of a counterweight carrier.
  • the counterweight support arm is designed to be extendable and consists of a large number of connected segments. By connecting the segments, two positions of the counterweight support arm can be set and then the counterweight can be moved along the counterweight support arm.
  • this object is achieved by a crane with a counterweight adjustment device with the features specified in claim 1 and by a method with the features specified in claim 13.
  • a crane with an undercarriage, an uppercarriage that can be pivoted about an axis of rotation to the undercarriage, a counterweight unit and a counterweight adjustment device, a telescopic frame attached to the uppercarriage with a telescopic longitudinal beam, a counterweight unit arranged displaceably along the frame, a drive unit for the driven Moving the counterweight unit on the frame and a kinematics unit that can be coupled to the drive unit for driven telescoping of the frame, with a cantilever element being attached to a rear end of the longitudinal beam facing away from the axis of rotation, the counterweight unit being displaceable along the frame in the area of the upper carriage up to the cantilever element , the counterweight unit can be fastened on the cantilever element and the counterweight unit can be telescoped in and out of the cantilever element with the frame.
  • a counterweight unit is displaceably arranged on a frame.
  • the frame is designed to be telescopic. By telescoping the frame, an additional displacement of the counterweight is possible, in particular together with the telescoped part of the frame.
  • the counterweight adjustment takes place in two stages.
  • the counterweight unit In a first stage, the counterweight unit is shifted on the frame, in particular up to an end position on a cantilever element. In particular, the frame is not telescoped in the first stage.
  • the counterweight In a second stage, the counterweight is shifted by telescoping the frame.
  • the counterweight unit can be designed in several parts and in particular have a plurality of counterweight elements, in particular stacked one on top of the other, which are in particular designed in plate form.
  • the counterweight unit can also have two stacks of, arranged next to one another, in particular at a distance from one another Have counterweight elements.
  • the counterweight unit can be displaced starting from a minimum counterweight radius, which is in particular 0, up to a maximum counterweight radius.
  • the minimum counterweight radius can also be negative. This means that the counterweight is arranged on the superstructure between the axis of rotation and the boom. The shifting takes place exclusively by means of the drive unit.
  • the counterweight radius is defined as the radial distance from an axis of rotation, with respect to which an upper carriage is rotatably arranged on an undercarriage of a crane.
  • the entire range of the adjustable counterweight radius remains usable in order to adapt the position of the counterweight unit to the requirements of a crane configuration and a load. The stability of the crane to the rear is maintained even if the uppercarriage counterweight is increased, since the uppercarriage counterweight is mounted so that it can be moved.
  • the counterweight adjustment device increases the flexibility of the use of the crane, in particular with regard to its maneuverability. Because the entire counterweight can be arranged in the counterweight unit on the crane's superstructure, the crane can move at any point in time of a lift and the superstructure can be rotated relative to the undercarriage.
  • a guide unit according to claim 2 enables an advantageous displacement of the counterweight unit on the frame.
  • the guide unit can be, for example, a guide rail, in particular a linear guide, which is arranged in particular on an upper side of the longitudinal beam.
  • a driven displacement element of the drive unit can be displaced linearly along the guide rail.
  • the guided displacement of the counterweight unit takes place indirectly through the driven displacement of the displacement element, which can be coupled to the counterweight unit.
  • the guide unit in particular as part of the drive unit, can be designed in the form of a force transmission element, in particular in the form of a revolving roller chain, to which the counterweight unit can be coupled and thus displaced in a guided manner.
  • a fastening of the counterweight unit on the cantilever element according to claim 1 ensures a safe displacement of the counterweight unit during the telescoping of the frame.
  • a longitudinal beam according to claim 3 ensures a reliable and multiple telescoping in order to realize larger counterweight radii with the shortest possible basic length of the crane, in particular the crane superstructure.
  • the longitudinal beam comprises an external base box and at least one telescopic element arranged therein, in particular a first telescopic element and a second telescopic element arranged in the first telescopic element.
  • Telescopic elements so-called inner boxes, which are nested multiple times in one another, are also possible.
  • the basic box and the inner boxes have contours similar to one another.
  • the contours are rectangular. Other cross-sectional contours are also conceivable.
  • An embodiment with two longitudinal members according to claim 4 enables an advantageous arrangement of the counterweight adjustment device symmetrically to the longitudinal axis of the superstructure.
  • a free space arranged between the longitudinal members enables an advantageous, because space-saving, integration of the counterweight adjustment device on the upper carriage of the crane.
  • Functional components of the crane can be arranged in the free space, such as an A-frame, boom and / or cable winches.
  • the frame is arranged with a longitudinal axis parallel to the longitudinal axis of the superstructure.
  • the longitudinal axis of the frame and the longitudinal axis of the superstructure are arranged in a common vertical plane, which in particular contains the axis of rotation with respect to which the upper carriage is rotatably arranged on the undercarriage.
  • a locking unit according to claim 5 enables a defined locking of the counterweight unit on the cantilever element, in particular during the telescoping of the frame.
  • the locking unit can have a locking element of the counterweight unit and a locking counter element of the cantilever element.
  • the locking element and the counter-locking element can be locked to one another, in particular, in an uncomplicated and time-saving manner. In particular, these are corresponding tabs that can be locked by means of a bolt.
  • a division of the entire counterweight of the crane into the counterweight unit and an additional cantilever counterweight according to claim 6 enables the counterweight unit to be reduced, that is to say a reduction in the mass and / or the volume, in particular the height, of the counterweight unit.
  • the height of the center of gravity of the counterweight adjustment device can be reduced.
  • the height of the crane's center of gravity is reduced.
  • the crane, in particular the superstructure can be moved in a more stable manner.
  • the size is reduced.
  • the additional cantilever counterweight is anchored in particular on an underside of the cantilever element.
  • a displacement element according to claim 7 enables uncomplicated displacement of the counterweight unit.
  • the counterweight unit can be coupled directly to the displacement element and can be displaced along the guide unit.
  • An embodiment of the kinematic unit according to claim 8 ensures an advantageous coupling of the at least one telescopic element with the displacement element by means of a cable pull system.
  • the cable pull system is, in particular, a circumferential, closed cable pull system.
  • the cable pull system comprises a first pull-out cable and a first return cable, which are in particular connected to one another.
  • a second cable system according to claim 9 simplifies the multiple telescoping capability of the frame.
  • the second cable pull system is designed in particular to be open and has a second pull-out rope and a second return rope.
  • the second cable pull system comprises a pull-out rope pulley and a return rope pulley, which are each attached to the telescopic telescopic element of the side member.
  • the drive unit comprises a rotatably driven rotary element and a force transmission element which interacts therewith and which is designed in particular as a revolving roller chain.
  • the rotating roller chain can be used directly Serve relocating the counterweight unit.
  • a displaceability of the rotary element according to claim 11 enables the rotary element to be arranged in different positions. In a first position, the rotary element interacts directly with the first force transmission element in order to displace the counterweight unit.
  • the rotary element In the first position, the rotary element is out of engagement with the kinematics unit. By displacing the rotary element along a coupling direction which is oriented perpendicular to the axis of rotation of the rotary element, the rotary element is displaced into a second position. In the second position, the rotary element is in engagement with the kinematic unit for telescoping the frame. In the second position, the rotary element is out of engagement with the first force transmission element.
  • a second power transmission element according to claim 12 enables the longitudinal member to be advantageously telescoped.
  • a method according to claim 13 enables the counterweight unit to be advantageously displaced on the crane.
  • the crane 1 shown is a crawler crane.
  • the crane 1 is a mobile crane.
  • the crane 1 has an undercarriage 2 with a crawler chassis 3.
  • the crane 1 is supported by the undercarriage 2 on a floor 26.
  • the crane 1 can also have a road chassis.
  • the undercarriage 2 has a central part 4, to which a caterpillar carrier 5 is attached to each side.
  • the caterpillars 5 are aligned parallel to a direction of travel 6 predetermined by the crawler chassis 3.
  • an uppercarriage 8 is arranged rotatably about a vertical axis of rotation 9 via a rotary connection 7.
  • the upper carriage 8 has an upper carriage frame 10.
  • a cabin 11 for a crane operator is attached to the upper carriage frame 10.
  • a main boom 13 is articulated on the upper carriage frame 10 so as to be pivotable about a boom axis 12.
  • a bracing unit 14 for the main boom 13 is arranged on the upper carriage frame 10.
  • the guying unit 14 comprises a guying frame 15 pivotably linked to the superstructure 8 18 led.
  • the superstructure 8 has a longitudinal axis 21 of the superstructure.
  • the superstructure frame 10 is designed symmetrically to the superstructure longitudinal axis 21.
  • the superstructure frame 10 is arranged symmetrically to the superstructure longitudinal axis 21. In relation to the axis of rotation 9, the superstructure frame is not attached to the rotary joint 7 in a rotationally symmetrical manner.
  • the cabin 11 is arranged.
  • the pivot axis 12 with the articulated main boom 13 is arranged at the front end of the superstructure frame 10.
  • the front end of the superstructure frame 1 0 closes essentially flush with the rotary connection 7. It is also conceivable that the front end of the superstructure 10 protrudes at the rotary connection 7 along the longitudinal axis 21 of the upper structure.
  • the superstructure frame 10 protrudes along the superstructure longitudinal axis 21 on the rotary joint 7.
  • the rear end of the upper carriage frame 10 protrudes far enough that, in an arrangement according to FIG Fig. 3 , in which the upper carriage longitudinal axis 21 is oriented parallel to the direction of travel 6, protrudes from the caterpillar girders 5.
  • a counterweight adjustment device 19 is arranged on the upper carriage 8.
  • the counterweight adjustment device 19 comprises a telescopic frame 20 which is designed like a frame and is firmly connected to the upper carriage 8 and can in particular be fastened to the upper carriage frame 10.
  • a rotation of the superstructure 8 about the axis of rotation 9 automatically causes a rotary movement of the counterweight adjustment device 19.
  • the frame 20 is shown in the plan view according to FIG Fig. 3 , 4th essentially designed as an open rectangular profile.
  • the counterweight adjustment device 19 is articulated on the upper carriage 8 at a front end facing the cabin 11 so that it can rotate about an axis of rotation 80 parallel to the pivot axis 12. At a rear end arranged opposite the front end, the counterweight adjustment device 19 is rigidly coupled to the upper carriage 8. As a result, rotation about the axis of rotation 80 is blocked.
  • the frame 20 has two telescopic longitudinal members 22 which are fastened to a cantilever element 23 at the rear end facing away from the axis of rotation 9.
  • the two longitudinal members 22 are connected to one another via the cantilever element 23.
  • the cantilever element 23 can be supported on the floor 26 via a support device 27.
  • the support device 27 comprises at least one, preferably height-adjustable, vertical support 28 and at least one base plate 29 connected to it.
  • a counterweight unit 24 is arranged on the frame 20.
  • the counterweight unit 24 comprises two counterweight stacks which are spaced apart from one another in relation to the upper carriage longitudinal axis 21. Each counterweight stack has a plurality of plate-shaped counterweight elements 25 stacked on top of one another.
  • the counterweight unit 24 is arranged on the frame 20 and has a counterweight radius up.
  • the counterweight radius is defined as the radial distance between the counterweight unit 24 and the axis of rotation 9.
  • the minimum counterweight radius r min is, for example, 0 if the counterweight unit is arranged concentrically to the axis of rotation 9.
  • the minimum counterweight radius r min can also be negative if the counterweight unit 24 is arranged between the axis of rotation 9 and the main boom 13 on the upper carriage 8.
  • the length h essentially corresponds to the distance between the axis of rotation 9 and the rear end of the frame 20 plus half the length of the cantilever element 23, as in FIG Fig. 1 shown.
  • the frame20 is telescoped a maximum of 2 times.
  • the counterweight unit 24 is arranged on the cantilever element 23.
  • the counterweight unit 24 is arranged with a maximum counterweight radius r max with respect to the axis of rotation 9.
  • the counterweight elements 25 are stacked on a counterweight element carriage 62, which can be rolled off by means of wheels 63 or rollers on the upper side 34 of the base box 30.
  • the counterweight adjustment device 19 has an in Figs. 1 to 4 Drive unit not shown in more detail in order to displace the counterweight unit 24 on the frame 20 in a driven manner.
  • the counterweight adjustment device 19 has an in Figs. 1 to 4 Kinematics unit, not shown in detail, which can be coupled to a drive unit in order to telescope the frame 20 in a driven manner.
  • FIG. 5 to 7 show schematic Side views accordingly Fig. 1 and 2 .
  • the longitudinal support 22 has an outer base box 30, a first telescopic element 31 arranged in the base box 30 and a second telescopic element 32 arranged in the first telescopic element 31. It is also conceivable that the longitudinal beam 22 has only one telescopic element or more than two telescopic elements.
  • the telescopic elements 31, 32 can be telescoped with respect to the basic box 30 independently of one another in combination with one another. It is also possible to extend more than one telescopic element and in particular all of the telescopic elements with respect to the base box 30.
  • the telescopic elements can be extended in a coupled manner, in particular simultaneously, or sequentially, that is to say one after the other.
  • the base box 30 is mounted along the longitudinal axis of the longitudinal member 22 at a front and rear end, that is to say on both sides along the longitudinal axis, on the upper carriage 8 by means of a bearing 33 in each case.
  • Bearing 33 shown on the left corresponds to the rotary bearing around the axis of rotation 80, which is provided by the rigid bearing at the rear end of the base box 30 in FIG Fig. 5 shown on the right is blocked.
  • the counterweight radius is minimal.
  • the minimum counterweight radius r min can also be smaller than 0.
  • the minimum counterweight radius can also be set greater than 0. This can be determined in particular as a function of the structural design of the counterweight unit 24.
  • the foremost position of the counterweight unit 24, which defines the minimum counterweight radius r min is arranged within the tilting edges of the base of the crane 1.
  • the tilting edges are defined essentially along a rectangle by the standing surface of the crane, that is to say in particular by the length of the crawler carriers and the track width of the crawler carriers in a crawler crane.
  • a guide unit 35 for guided displacement of the counterweight unit 24 is provided on an upper side 34 of the longitudinal beams 22, in particular of the respective base box 30.
  • the guide unit 35 has a guide rail 36 which is arranged on the base box 30 by means of guide unit bearings 37.
  • the Guide rail 36 is linear and defines a linear guide axis 38.
  • a displacement element 39 can be displaced in a driven manner along the guide axis 38 on the guide rail 36.
  • the displacement element 39 forms a drive unit.
  • the displacement element 39 can be coupled directly to the counterweight unit 24 by means of a coupling element 40. In the coupled arrangement according to Fig. 5 A displacement of the displacement element 39 along the guide axis 38 directly causes a displacement of the counterweight unit 24. In a decoupled arrangement, the counterweight unit 24 is released from the displacement element 39. A displacement of the displacement element 39 does not cause any displacement of the counterweight unit 24.
  • the kinematics unit 41 has a closed, circumferential first cable system.
  • the first cable pull system comprises a first pull-out cable 42, which is connected at both ends to the ends of a first return cable 43 at a first connection point 44 and at a second connection point 45.
  • the first connection point 44 is attached to the upper side 34 of the round box 30.
  • the first connection point is arranged in the region of the guide unit mounting 37, which faces the cantilever element 23.
  • the first connection point 44 is arranged adjacent to the cantilever element 23.
  • the second connection point 45 is arranged on the first telescopic element 31.
  • the displacement element 39 can be coupled to the first telescopic element 31 via the cable pull system.
  • Fig. 5 is by a connecting line 46 a bracing of the cantilever element 23 with a tip of an in Fig. 1 and 2 not shown superlift mast of a crane indicated.
  • a crane 78 with a superlift mast 79 is in Fig. 18 , 19th shown.
  • the kinematics unit 41 also has a second cable pull system.
  • the second The cable pull system is designed to be open and has a second pull-out cable 47 and a second return cable 148.
  • the ropes 47, 48 are not connected to one another.
  • the second pull-out cable 47 is fastened with a first end 49 to a rear wall 50 of the second telescopic element 32 facing away from the cantilever element 23. With a second end 51, the second pull-out cable 47 is attached to a rear wall 52 of the base box 30 facing away from the cantilever element 23.
  • the second pull-out rope 47 is guided over a pull-out rope deflection pulley 53 which is rotatably mounted on a pull-out rope pulley carrier 54.
  • the pull-out rope pulley carrier 54 is attached to a rear wall 55 of the first telescopic element 31 facing away from the cantilever element 23.
  • the second return rope 48 is fastened with a first end 56 to a rear wall 57 of the cantilever element 23 facing away from the longitudinal beam 22.
  • a second end 58 of the second return rope 48 is attached to an end face 59 of the base box 30 facing the cantilever element 23.
  • the second return rope 148 is guided around a rotatably mounted return rope deflection pulley 60.
  • the return rope deflection pulley 60 is fastened to the rear wall 55 of the first telescopic element 31 by means of a return rope deflection pulley carrier 61.
  • the counterweight unit 24 is coupled to the displacement element 39 by means of the coupling element 40.
  • the displacement unit 39 is displaced along the guide axis 38.
  • the counterweight unit 24 is displaced directly guided along the guide unit 35, in particular from the axis of rotation 9 in the direction of the cantilever element 23.
  • the displacement unit 39 is arranged at an end of the guide unit 35 facing the cantilever element 23.
  • the counterweight unit 24 is arranged on the cantilever element 23.
  • the counterweight radius r corresponds to the length b according to FIG Fig. 1 .
  • the coupling between the counterweight unit 24 and the displacement element 39 is released.
  • the coupling element 40 can be used to couple the displacement element 39 to the first cable pull system, in particular at the first connection point 44.
  • the counterweight unit 24 is locked on the cantilever element 23 by means of a locking unit 64.
  • the counterweight unit 24 has a locking element which cooperates with a locking counter-element of the cantilever element 23. In the locked arrangement according to Fig. 6 the counterweight unit 24 is reliably and securely fastened to the cantilever element 23.
  • the displacement element 39 is then displaced back into the starting position according to FIG Fig. 5 , so in the direction of the rear wall 52 of the base box 30. This relocation is in Fig. 7 shown.
  • the displacement element 39 When the displacement element 39 is displaced back, it pulls the cable pull system along at the second connection point 44.
  • the second connection point 45 which is attached directly to the cable pull system, is also pulled along.
  • the connection point 45 that is pulled along causes a linear displacement of the first telescopic element 31.
  • the pull-out rope pulley carrier 54 with the pull-out rope pulley 53 is displaced.
  • the rope section of the second pull-out rope 47 which is arranged between the first end 49 and the pull-out rope deflection pulley 53, is shortened.
  • the second telescopic element 32 is also extended.
  • the telescoping according to the exemplary embodiment of the counterweight adjustment device 19 is dependent, which means that the two telescopic elements 31, 32 extend simultaneously, the extension speed of the cantilever element 23 corresponding to 1.5 times the speed of the displacement element 39.
  • the counterweight unit 24 is telescoped with the cantilever element 23.
  • the counterweight radius can be increased significantly to b.
  • the maximum counterweight radius rmax is a multiple, in particular at least 1.5 times, in particular at least twice, in particular at least 2.5 times and in particular at least 3 times the length l 1 .
  • the counterweight adjustment device is retracted in the reverse order.
  • the first telescopic element 31 is drawn into the base box via the return rope 43 and the second connection point 45.
  • the return rope pulley 60 attached to it is also telescoped in, so that the section of the second return rope 48 that is attached between the return rope pulley 60 and the first end 56 on the rear wall 57 of the cantilever element 23 is shortened.
  • the second telescopic element is automatically retracted.
  • the main difference of the counterweight adjustment device 19a is that an additional cantilever counterweight 65 is provided.
  • the additional cantilever element counterweight 65 With the additional cantilever element counterweight 65, the mass and in particular the stacking height of the counterweight elements 25 of the counterweight unit 24 can be reduced. Because the weight of the counterweight unit 24 to be displaced along the longitudinal beam 22 is reduced, the longitudinal beams, in particular the base box 30 and the telescopic elements 31 and 32 arranged therein, can be made smaller, that is to say designed to be smaller. It is particularly conceivable to reduce the number of counterweight elements 25.
  • the cantilever counterweight 65 is attached to an underside 66 of the cantilever element 23. Due to the eccentric, ie eccentric with respect to the axis of rotation 9, arrangement of the cantilever element counterweight 65, the counterweight adjustment device 19a according to this embodiment has the arrangement according to Fig. 8 already has an effective counterweight radius r eff which differs from 0, although the counterweight unit 24 is arranged concentrically to the axis of rotation 9.
  • the second end 51a of the second pull-out rope 47 and the second end 58a of the second return rope 48 are each designed to be unsecured.
  • the counterweight adjustment device 19a is actuated by displacing the displacement element 39 with the coupled kinematics unit 41, only the first telescopic element 31 is telescoped.
  • the second telescopic element 32 is telescoped together with the first telescopic element 31.
  • the drive unit has a rotary element 68 that is rotatably driven about an axis of rotation 67.
  • the rotary element 68 is in particular a gear.
  • the rotary element 68 can in particular be driven rotatably in both directions of rotation with respect to the axis of rotation 67.
  • the rotary element 68 can be displaced along a coupling direction 69 which is oriented perpendicular to the axis of rotation 67.
  • the coupling direction 69 is linear and in particular vertical. It is essential that a displacement of the rotary element 68 along the coupling direction 69 an arrangement in a first position according to FIG Fig. 11 and an arrangement in a second position according to FIG Fig. 12 enables.
  • the rotary element In the first position according to Fig. 11 the rotary element is coupled to a first force transmission element 70 of the drive unit.
  • the first force transmission element is designed as a revolving roller chain that is guided around two toothed wheels 71.
  • the rotary element 68 is coupled to a second force transmission element 72.
  • the second power transmission element 72 is designed as a rotating roller chain.
  • the second force transmission element 72 is preferably identical to the first force transmission element 70.
  • the roller chain of the first force transmission element 70 also serves as a guide unit 35b for the guided displacement of the counterweight unit 24.
  • the coupling element 40b is fastened to the first force transmission element 70, with which the counterweight unit 24 can be fastened directly to the first force transmission element 70.
  • the gear wheels 71, around which the first force transmission element 70 is guided, is rotatably mounted on the upper side 34 of the base box 30.
  • the first telescopic element 31 can be coupled to the basic box 30 by means of a first telescopic coupling device 73. In a coupled arrangement, the first telescopic element 31 is locked on the base box 30.
  • the second telescopic element 32 can be coupled to the first telescopic element 31 with a second telescopic coupling device 74. In a coupled arrangement, the second telescopic element 32 is attached to the first telescopic element 31.
  • the second force transmission element 72 that is to say the roller chain, is guided in a revolving manner via gear wheels 71.
  • the gears 71 are each attached at the end to a gear carrier 75.
  • the gear carrier 75 is fastened to the rear wall 52 of the base box 30.
  • the second force transmission element 72 corresponds to the kinematics unit 41b for this exemplary embodiment.
  • the rotary element 68 according to Fig. 11 rotatably driven about the axis of rotation 67 in a clockwise direction.
  • the roller chain 70 is driven clockwise around the toothed wheels 71 and, by means of the coupling element 40b, the counterweight unit 24 according to FIG Fig. 11 shifted from left to right to the cantilever element 23 out.
  • the counterweight unit 24 is decoupled from the first force transmission element 70 and coupled to the cantilever element 23 by means of the locking unit 64.
  • the rotary element 68 is displaced downward along the coupling direction 69 until the rotary element 68 is in engagement with the second force transmission element 72 ( Fig. 12 ).
  • FIG Fig. 13 rotatably driven about the axis of rotation 67 in the counterclockwise direction.
  • the second force transmission element 72 is coupled to the first telescopic element 31 by means of a first force transmission element / coupling element 76.
  • the first telescopic element 31 is telescoped out by the rotary drive movement of the rotary element 68, which is transmitted to the force transmission element 72.
  • a maximally extended state of the first telescopic element 31 with respect to the base box 30 is shown in FIG Fig. 14 shown. Together with the first telescopic element 31, the second telescopic element 32 and the cantilever arm 23 attached to it are telescoped out. Telescoping in takes place in the reverse order.
  • FIG. 15 and 16 Extending the second telescopic element 32 is shown in FIG Fig. 15 and 16 shown.
  • the main difference compared to the crane according to Figs. 1 to 4 consists in that the crane 78 is a superlift crane which has a superlift mast which is pivotably articulated on the superstructure 8 in a manner known per se and is braced on the superstructure via a bracing unit 14.
  • a bracing 46 is provided from the head of the superlift mast 79 to the cantilever element 23.
  • the bracing 46 can preferably be coupled in the center of gravity of the counterweight unit 24. Coupling outside the center of gravity is possible.
  • the counterweight adjustment device 19 is not rigidly coupled to the upper carriage 8 at the rear end of the crane 78, that is to say in superlift operation. This enables the counterweight adjustment device 19 to be rotatable about the axis of rotation 80, which is parallel to the pivot axis 12, at the front end of the counterweight adjustment device 19.
  • a coupling between the upper carriage 8 and the longitudinal member 22 can be advantageous.
  • the A-frame 15 is connected to the top of the superlift mast 79 via the reeving 16.
  • the triangle formed by the A-frame 15, the reeving 16 and the superlift mast 79 is rigid.
  • the triangle is articulated on the upper carriage 8 of the crane 78 so that it can rotate about the axis of rotation 80. Since the triangle 15, 16, 79 mentioned is rigid, the rope reeving 14 between the upper carriage 8 of the crane 78 and the A-frame 15 is also rigid, that is to say unchangeable in length.
  • the bracing 56 of the counterweight unit 24 on the superlift mast 79 is implemented in particular by support rods that have a constant length.
  • the counterweight unit 24 When the counterweight unit 24 is displaced by means of the cantilever element 23, the counterweight unit 24 is displaced non-linearly, in particular along an arc segment.
  • the vertical supports 28 can be designed to be height-adjustable. The height adjustability can also serve to compensate for height differences between the standing surface of the crane 78 under the base plate 29. Additionally or alternatively, the support rods of the bracing 46 can also be designed to be variable in length in order to enable the counterweight unit 24 to be displaced along a linear direction.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jib Cranes (AREA)

Claims (13)

  1. Grue (1 ; 78) comprenant une infrastructure (2), une superstructure (8) qui peut pivoter sur un axe de rotation (9) par rapport à l'infrastructure (2), une unité de contrepoids (24) et un dispositif de réglage de contrepoids (19; 19a; 19b), le dispositif de réglage de contrepoids (19 ; 19a ; 19b) comprenant :
    un châssis télescopique (20) fixé à la superstructure (8) et comprenant une poutre longitudinale télescopique (22), une unité de contrepoids (24) disposée de manière déplaçable le long du châssis (20), une unité d'entraînement destinée à déplacer en entraînement l'unité de contrepoids (24) sur le châssis (20) et une unité cinématique (41 ; 41b) qui peut être accouplée à l'unité d'entraînement pour déplacer en entraînement de manière télescopique le châssis (20),
    caractérisée en ce qu'un élément en porte-à-faux (23) est fixé à une extrémité arrière, opposée à l'axe de rotation (9), de la poutre longitudinale (22), l'unité de contrepoids (24) peut être déplacée le long du châssis (20) dans la région de la superstructure (8) à l'exception de l'élément en porte-à-faux (23), l'unité de contrepoids (24) peut être fixée sur l'élément en porte-à-faux (23) et l'unité de contrepoids (24) sur l'élément en porte-à-faux (23) peut être déployée et rétractée de manière télescopique avec le châssis (20).
  2. Grue (1 ; 78) selon la revendication 1, caractérisée par une unité de guidage (35 ; 35b) disposée sur la poutre longitudinale (22) et destinée à déplacer de manière guidée l'unité de contrepoids (24) dans la région de la superstructure (8).
  3. Grue (1 ; 78) selon la revendication 1 ou 2, caractérisée en ce que la poutre longitudinale (22) est conçue pour être télescopique, notamment plusieurs fois.
  4. Grue (1 ; 78) selon l'une des revendications précédentes, caractérisée par deux poutres longitudinales (22) qui sont disposées notamment symétriquement, notamment parallèlement et à distance, par rapport à un axe longitudinal du châssis (20).
  5. Grue (1 ; 78) selon l'une des revendications précédentes, caractérisée par une unité de verrouillage (64) destinée à verrouiller l'unité de contrepoids (24) sur l'élément en porte-à-faux (23).
  6. Grue (1 ; 78) selon l'une des revendications précédentes, caractérisée par un contrepoids d'élément en porte-à-faux supplémentaire (65) qui est ancré sur l'élément en porte-à-faux (23), en particulier sur un côté inférieur (66) de l'élément en porte-à-faux (23).
  7. Grue (1 ; 78) selon l'une des revendications précédentes, caractérisée en ce que l'unité d'entraînement est conçue comme un élément de déplacement (39) entraîné notamment le long de l'unité de guidage (35 ; 35b).
  8. Grue (1; 78) selon la revendication 7, caractérisée en ce que l'unité cinématique (41 ; 41b) comporte un premier système de câbles qui peut être relié à l'élément de déplacement (39), le premier système de câbles pouvant être accouplé à un premier élément télescopique (31) de la poutre longitudinale (22).
  9. Grue (1; 78) selon la revendication 8, caractérisée en ce que l'unité cinématique (41 ; 41b) comporte un deuxième système de câbles qui est fixé au premier élément télescopique (31) et qui relie notamment un caisson de base (30) de la poutre longitudinale (22) à un deuxième élément télescopique (32) disposé dans le premier élément télescopique (31).
  10. Grue (1 ; 78) selon l'une des revendications 1 à 6, caractérisée en ce que l'unité d'entraînement comporte un élément rotatif (68) entraîné en rotation sur un axe de rotation (67) et un premier élément de transmission de force (70) qui peut être relié à l'élément rotatif (68), en particulier le premier élément de transmission de force (70) pouvant être accouplé à l'unité de contrepoids (24).
  11. Grue (1 ; 78) selon la revendication 10, caractérisée en ce que l'élément rotatif (68) peut être déplacé le long d'une direction d'accouplement (69), notamment perpendiculairement à l'axe de rotation (67), pour s'accoupler à l'unité cinématique (41 ; 41b).
  12. Grue (1 ; 78) selon la revendication 10 ou 11, caractérisée en ce que l'unité cinématique (41 ; 41b) comporte un deuxième élément de transmission de force (72) qui peut être relié à l'élément rotatif (68), le deuxième élément de transmission de force (72) pouvant être accouplé à un caisson de base (30) ou à un deuxième élément télescopique (32) disposé dans un premier élément télescopique (31), en particulier l'élément rotatif (68) pour être accouplé au deuxième élément de transmission de force (72) pour déplacer de manière télescopique le châssis (20).
  13. Procédé de réglage d'une unité de contrepoids (24) sur une grue (1 ; 78) comprenant une infrastructure (2), une superstructure (8) qui peut pivoter sur un axe de rotation (9) par rapport à l'infrastructure (2) et un dispositif de réglage de contrepoids (19 ; 19a ; 19b), le dispositif de réglage de contrepoids (19 ; 19a ; 19b) comprenant:
    un châssis télescopique (20) fixé à la superstructure (8) et comprenant une poutre longitudinale télescopique (22), une unité de contrepoids (24) disposée de manière déplaçable le long du châssis (20), une unité d'entraînement destinée à déplacer en entraînement l'unité de contrepoids (24) sur le châssis (20) et une unité cinématique (41 ; 41b) qui peut être accouplée à l'unité d'entraînement pour déplacer en entraînement de manière télescopique le châssis (20), notamment sur une grue selon l'un au moins des revendications 1 à 12, caractérisé en ce que, dans une première étape, l'unité de contrepoids (24) est déplacée le long du châssis (20) dans la région de la superstructure (8) à l'exception d'un élément en porte-à-faux (23) disposé à l'extrémité arrière, opposée de l'axe de rotation (9), de la poutre longitudinale (22), où elle est ensuite fixée et, dans une deuxième étape, l'unité de contrepoids (24) peut être déployée et rétractée de manière télescopique avec le châssis (20) par rapport à la superstructure (8) sur l'élément en porte-à-faux (23) au moyen de l'unité d'entraînement.
EP17735518.7A 2016-07-08 2017-07-05 Grue comprenant un dispositif de déplacement de contrepoids et procédé de déplacement d'un contrepoids sur une grue Active EP3448796B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016212517.6A DE102016212517A1 (de) 2016-07-08 2016-07-08 Gegengewichtsverstellvorrichtung für einen Kran, Kran sowie Verfahren zum Verstellen eines Gegengewichts an einem Kran
PCT/EP2017/066744 WO2018007433A1 (fr) 2016-07-08 2017-07-05 Grue comprenant un dispositif de déplacement de contrepoids et procédé de déplacement d'un contrepoids sur une grue

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EP3448796A1 EP3448796A1 (fr) 2019-03-06
EP3448796B1 true EP3448796B1 (fr) 2020-09-02

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US (1) US11167962B2 (fr)
EP (1) EP3448796B1 (fr)
JP (1) JP6961875B2 (fr)
CN (1) CN109476467B (fr)
CA (1) CA3028539A1 (fr)
DE (1) DE102016212517A1 (fr)
WO (1) WO2018007433A1 (fr)

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DE102020129454B4 (de) 2020-11-09 2023-08-17 Tadano Demag Gmbh Fahrzeugkran mit einem Auslegersystem
DE102020134714B4 (de) 2020-12-22 2023-09-28 Tadano Demag Gmbh Fahrzeugkran mit einem wippbaren Hauptausleger und mit einem Zusatzauslegersystem
CN113511600B (zh) * 2021-07-09 2023-07-25 浙江三一装备有限公司 超起配重调节连接装置及起重机
CN113651253B (zh) * 2021-08-23 2023-12-29 合肥市春华起重机械有限公司 一种随车起重机的配重装置

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Publication number Publication date
JP2019520285A (ja) 2019-07-18
US20190315607A1 (en) 2019-10-17
JP6961875B2 (ja) 2021-11-05
DE102016212517A1 (de) 2018-01-11
CA3028539A1 (fr) 2018-01-11
CN109476467B (zh) 2020-10-30
CN109476467A (zh) 2019-03-15
US11167962B2 (en) 2021-11-09
WO2018007433A1 (fr) 2018-01-11
EP3448796A1 (fr) 2019-03-06

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