Pipe Grapple Apparatus and Method
AssigneeLedcor IP Holdings Ltd.
InventorTim Martin
Life of this patent
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Abstract
A grappler for use in grasping and manipulating pipe segments for large diameter pipeline tie-ins has a first frame and a second frame movably secured thereto. A pair of grapple arms is pivotally mounted to each frame and is actuated between a open position and a closed position to engage and grasp the pipe segments. An actuator displaces the second frame relative to the first frame in a first degree of movement to displace one pair of grapple arms relative to the other pair of arms, and a support frame provides the grappler with two additional degrees of movement. When mounted to a backhoe or like device, the grappler facilitates safe retrieval of pipe from hazardous trenches, and provides handling and alignment of the pipe segments for easier and safer welding of the pipe joints.
Claims18
A grapple apparatus comprising:
- a frame having a first frame portion and a second frame portion movably secured to the first frame portion;
- a first pair of grapple arms pivotally mounted to the first frame portion about a first axis;
- a second pair of grapple arms pivotally mounted to the second frame portion about said first axis;
- means for actuating said grapple arms between a first open position and a second closed position for engaging and grasping an object;
- and,
- means for displacing said second frame portion relative to said first frame portion to provide a degree of movement in the direction of said first axis to displace said first pair of grapple arms relative to said second pair of grapple arms.
A method for manipulating an object with a grapple apparatus having a frame with a first frame portion and a second frame portion movably secured to said first frame portion, a first pair of grapple arms pivotally mounted to said first frame portion about a first axis, a second pair of grapple arms pivotally mounted to said second frame portion about said first axis, and a support member attached to said frame for detachably mounting said frame to a lifting device, said method comprising moving said grapple arms between a first open position and a second closed position to engage and grasp said object, and moving said grapple apparatus in three degrees of movement.
Dependencies are inferred from the claim text.