Mobile crane
AssigneeLiebherr-Werk Ehingen GmbH
InventorsFranz Oelberger, Yggve Richter, Markus Bitz, Heinz Koenig
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Abstract
The invention concerns a mobile crane with a drivable undercarriage and a rotatable superstructure mounted thereon, where on the one side there is pivoted a swiveling jib, and on the other side a counterweight arrangement is mounted which is movable relative to the superstructure. According to the invention, the counterweight arrangement has a counterweight base plate, on which at least two stacks of counterweights are arranged and able to swivel about a vertical axis.
Claims15
A mobile crane with a drivable undercarriage and a rotatable superstructure mounted thereon, wherein on one side of the superstructure there is pivoted a swiveling jib, and on another side of the superstructure a counterweight arrangement is mounted which is movable relative to the superstructure,
- wherein the counterweight arrangement has at least one counterweight base plate, on which at least two stacks of counterweights are arranged, each of the at least two stacks of counterweights able to swivel about a corresponding vertical axis, each corresponding vertical axis located at a different position of the mobile crane,
- wherein the at least two stacks of counterweights are placed on swivel arms pivoting on a counterweight base plate of the at least one counterweight base plate, wherein the swivel arms swivel continuously from a maximum retracted position to a maximum extended position via swivel drive units,
- wherein the counterweight arrangement is coupled to the superstructure via a counterweight frame, and wherein ballasting cylinders are positioned between the at least two stacks of counterweights and the counterweight frame, wherein the at least one counterweight base plate and the swivel arms are removable as a whole from the superstructure as a self-standing transport unit,
- wherein the mobile crane is configured for traveling on public roads, and
- wherein swivel angles of the swivel arms are detected by sensors.
A mobile crane with a drivable undercarriage and a rotatable superstructure mounted thereon, wherein on one side of the superstructure there is pivoted a swiveling jib, and on another side of the superstructure a counterweight arrangement is mounted which is movable relative to the superstructure,
- wherein the counterweight arrangement has at least one counterweight base plate, a first counterweight base plate having a first stack of counterweights and a second stack of counterweights arranged thereon,
- wherein the first stack of counterweights and the second stack of counterweights each have a center of gravity,
- wherein the first stack of counterweights and the second stack of counterweights are able to swivel about a corresponding vertical axis, each corresponding vertical axis located at a different position of the mobile crane,
- wherein the at least one counterweight base plate is joined by a counterweight frame to the superstructure,
- wherein a first ballasting cylinder and a second ballasting cylinder each include a center of gravity, and
- wherein the center of gravity for each of the first ballasting cylinder, the second ballasting cylinder, the first stack of counterweights, and the second stack of counterweights lies in a plane.
Dependencies are inferred from the claim text.