Lifting arrangement for lifting a pipe
AssigneeMhwirth AS
InventorGjerulf Ottersland
Life of this patent
Estimating the term…
Abstract
A lifting arm arrangement for lifting a pipe includes a pipe stacking tool comprising a first end, a second end, and a pipe handling head arranged at the second end. The pipe handling head is configured to grip around the pipe. A gripper head is connected to the first end of the pipe stacking tool. A tilt shaft is configured to connect the pipe stacking tool and the gripper head so as to form an articulated joint. The articulated joint comprises a locked position in which the pipe stacking tool is prevented from tilting about the tilt shaft, and a neutral position in which the pipe stacking tool is allowed to tilt about the tilt shaft.
Claims19
A lifting arm arrangement for lifting a pipe, the lifting arm arrangement comprising:
- a pipe stacking tool comprising a first end, a second end, and a pipe handling head arranged at the second end, the pipe handling head being configured to grip around the pipe;
- a gripper head connected to the first end of the pipe stacking tool;
- a tilt shaft configured to connect the pipe stacking tool and the gripper head so as to form an articulated joint, the articulated joint comprising a locked position in which the pipe stacking tool is prevented from tilting about the tilt shaft, and a neutral position in which the pipe stacking tool is allowed to tilt about the tilt shaft;
- and
- a rotary arm comprising a rotary arm bore, the rotary arm being pivotally connected to the gripper head,
- wherein,
- the tilt shaft is passed through the rotary arm bore, and
- the rotary arm is configured to turn the tilt shaft and the pipe stacking tool between the neutral position and the locked position of the articulated joint.
A lifting arm arrangement for lifting a pipe, the lifting arm arrangement comprising:
- a pipe stacking tool comprising a first end, a second end, and a pipe handling head arranged at the second end, the pipe handling head being configured to grip around the pipe;
- a gripper head connected to the first end of the pipe stacking tool;
- a tilt shaft configured to connect the pipe stacking tool and the gripper head so as to form an articulated joint, the articulated joint comprising a locked position in which the pipe stacking tool is prevented from tilting about the tilt shaft, and a neutral position in which the pipe stacking tool is allowed to tilt about the tilt shaft;
- a locking sleeve connected to the gripper head, the locking sleeve comprising at least one locking face;
- and
- at least one stop face arranged on the pipe stacking tool,
- wherein,
- the at least one locking face is positioned to contact with the at least one stop face in the locked position of the articulated joint.
A lifting arm arrangement for lifting a pipe, the lifting arm arrangement comprising:
- a pipe stacking tool comprising a first end, a second end, and a pipe handling head arranged at the second end, the pipe handling head being configured to grip around the pipe;
- a gripper head connected to the first end of the pipe stacking tool;
- a tilt shaft configured to connect the pipe stacking tool and the gripper head so as to form an articulated joint, the articulated joint comprising a locked position in which the pipe stacking tool is prevented from tilting about the tilt shaft, and a neutral position in which the pipe stacking tool is allowed to tilt about the tilt shaft;
- and
- a rotary arm comprising a rotary arm bore, the rotary arm being pivotally connected to the gripper head,
- wherein,
- the articulated joint is configured to allow a tilting between the pipe handling head and the gripper head,
- the tilt shaft is passed through the rotary arm bore, and
- the rotary arm is configured to turn the tilt shaft and the pipe stacking tool between the neutral position and the locked position of the articulated joint.
Dependencies are inferred from the claim text.