Trolley and spreader assembly
AssigneeNsl Engineering Pte Ltd
InventorsGhee Hua Ng, Robert Arthur Mills
Life of this patent
Estimating the term…
Abstract
A trolley assembly (200) comprising means for supporting a spreader assembly (300), said means including cables (20), said spreader assembly (300) adapted to engage at least one freight device; a first carrier portion and a second carrier portion; the supporting means adapted to connect the spreader assembly (300) to at least one of said carrier portions and; a trolley separation means for selectively varying the relative position of the first and second carrier portions wherein the adjustment of the trolley separation means is such that the cables (20) are maintained in a substantially vertical orientation.
Claims16
A trolley assembly comprising:
- means for supporting a spreader assembly, said means including:
- cables;
- a first carrier portion and a second carrier portion, said carrier portions in rolling engagement with a crane beam;
- first and second carrier portions;
- a trolley separation means for selectively varying the relative position of the first and second carrier portions;
- a spreader assembly, said spreader assembly comprising:
- a first and a second spreader frame;
- a first and a second head portions which respectively engage with said first and second spreader frames;
- and
- a spreader separation means for adjusting the relative position of the head portions;
- wherein said first spreader frame is connected to said first carrier portion and said second spreader frame is connected to said second carrier portion by said cables;
- and
- wherein when the spreader separation means displaces said first and second head portions, the orientation between the first head portion and the first carrier portion and the orientation between the second head portion and the second carrier portion is maintained by the trolley separation means displacing the relative position of the first carrier portion with respect to the second carrier portion.
A trolley assembly comprising
- a spreader assembly;
- means for supporting the spreader assembly, said means including cables, said spreader assembly engageable with at least two freight devices;
- a first carrier portion and a second carrier portion, said carrier portions mounted to a single carrier, with the first carrier portion fixed to the single carrier and the second carrier portion in sliding engagement with the single carrier, said single carrier in rolling engagement with a crane beam;
- a trolley separation means arranged to bias the second carrier portion to move to a desired position relative to the first carrier portion within the carrier;
- the supporting means adapted to connect the spreader assembly to at least one of said carrier portions;
- wherein the spreader assembly comprises:
- at least two head portions and two spreader frames, each head portions being engaged with a spreader frame, the spreader assembly engageable with at least two freight devices, each freight device respectively engaged with a spreader frame;
- and
- a spreader separation means for adjusting the relative position of the head portions, in a direction parallel to that of the trolley separation means.
Dependencies are inferred from the claim text.