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US 2017/0166421 A1Published application
Fill degree control for a bulk material gripper of a crane
AssigneeTerex MHPS GmbH
InventorsJürgen Rothmann, Arno van de Loo
Life of this patent
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AssigneeTerex MHPS GmbH
InventorsJürgen Rothmann, Arno van de Loo
Estimating the term…
A method for filling a gripper for bulk material, with the gripper being suspended on holding cables, raised and lowered by a crane via a controller, and acting on the bulk material with the gripper weight during the closing and filling process. By reducing the effect of the weight of the gripper on the bulk material, a fill degree of the gripper is influenced via the controller in that a tensile force acting on the holding cables is influenced in order to optimally fill the gripper. A tensile force TARGET value is determined for the holding cables via the controller and is output to a tensile force controller as an input variable. An electric motor for lifting and lowering the gripper is controlled by the tensile force controller, and an ascertained tensile force ACTUAL value of the holding cables is supplied to the tensile force controller as an input variable.
A method for filling a gripper for bulk material, said gripper being suspended on holding cables, raised and lowered by a crane via a controller and acting on the bulk material with its own weight during a closing and filling procedure, wherein by reducing the effect of the weight of the gripper on the bulk material, a fill degree of the gripper is influenced via the controller in that a tensile force acting on the holding cables is influenced, said method comprising determining a tensile force target value for the holding cables via the controller, outputing the tensile force target value to a tensile force controller as an input variable, controlling an electric motor for lifting and lowering the gripper by the tensile force controller and supplying an ascertained tensile force actual value of the holding cables is supplied to the tensile force controller as an input variable.
Dependencies are inferred from the claim text.