Anti-two-block sensing apparatus and method
AssigneeKeppel Letourneau USA, Inc.
InventorsTimothy Saker, Timothy Williams
Life of this patent
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Abstract
Various hoisting systems with anti-two-block sensing devices are provided. In one embodiment, an apparatus includes a hoisting system having a hoisting line, a sleeve positioned on the hoisting line, and an anti-two-block sensing device installed about the hoisting line so as to allow the hoisting line to move through the anti-two-block sensing device. The anti-two-block sensing device includes a detector positioned to detect a sleeve component when the sleeve is present within the anti-two-block sensing device. Additional systems, devices, and methods are also disclosed.
Claims18
An apparatus comprising:
- a hoisting system having a hoisting line;
- a sleeve positioned on the hoisting line;
- and
- an anti-two-block sensing device installed about the hoisting line so as to allow the hoisting line to move through the anti-two-block sensing device, the anti-two-block sensing device including a detector positioned to detect a sleeve component when the sleeve is present within the anti-two-block sensing device,
- wherein the sleeve component includes a metallic material and the detector includes a proximity switch positioned to detect presence of the metallic material within the anti-two-block sensing device.
An apparatus comprising:
- a hoisting system having a hoisting line;
- a sleeve positioned on the hoisting line;
- and
- an anti-two-block sensing device installed about the hoisting line so as to allow the hoisting line to move through the anti-two-block sensing device, the anti-two-block sensing device including a detector positioned to detect a sleeve component when the sleeve is present within the anti-two-block sensing device, wherein the sleeve component includes a radio-frequency identification tag and the detector includes a radio-frequency identification reader positioned to detect the radio-frequency identification tag.
A method of operating a hoisting system comprising:
- drawing a hoisting line of a hoisting system past an anti-two-block sensing device, the anti-two-block sensing device including a detector and the hoisting line including a target to be sensed by the detector;
- detecting the target of the hoisting line with the detector of the anti-two-block sensing device, wherein the target includes a metallic target inside a sleeve positioned about the hoisting line, the detector of the anti-two-block sensing device includes a proximity sensor, and detecting the target of the hoisting line with the detector includes detecting the metallic target with the proximity sensor;
- and
- altering hoisting speed of the hoisting line in response to the detection of the target of the hoisting line by the detector.
A method of operating a hoisting system comprising:
- drawing a hoisting line of a hoisting system past an anti-two-block sensing device, the anti-two-block sensing device including a detector and the hoisting line including a target to be sensed by the detector;
- detecting the target of the hoisting line with the detector of the anti-two-block sensing device, wherein the target includes a radio-frequency identification tag positioned along the hoisting line, the detector of the anti-two-block sensing device includes a radio-frequency identification reader, and detecting the target of the hoisting line with the detector includes detecting the radio-frequency identification tag with the radio-frequency identification reader;
- and
- altering hoisting speed of the hoisting line in response to the detection of the target of the hoisting line by the detector.
Dependencies are inferred from the claim text.