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US 2012/0055898 A1Published application
Gantry with suspending links
AssigneeStephen Edward Sparrow
InventorStephen Edward Sparrow
Life of this patent
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Abstract
The gantry system (10) includes jack legs (12) and header beams (14). The load may be supported on a metal chain (20) comprising of a plurality of metal links (24). Each link has a stop surface (28) for engaging a support plate (30) laterally movable with respect to support structure (18).
Claims20
A hydraulic gantry for lifting and moving a load, comprising:
- a plurality of hydraulic jack legs;
- one or more header beams supported at an upper end of the hydraulic jack legs;
- a plurality of vertical links forming a chain suspended from one of the one or more header beams;
- each link pivotally connected to another of the plurality of links, each link further including two stop surfaces thereon;
- a support plate below a header beam for moving from a disengaged position wherein the links pass by the support plate to an engaged position wherein the plurality of hydraulic jack legs lower a link to engage the support surface and thereby suspend the load from the support plate;
- and
- rigging to connect the load to the chain, such that a link may supported on the support plate and fluid pressure relieved from the plurality of hydraulic jack legs as the hydraulic jack legs are lowered;
- and
- one or more links removable from the chain such that a shortened chain reduces the vertical spacing between the header beam and the load.
6 more elements
A hydraulic gantry for lifting and moving a load, comprising:
- four or more hydraulic jack legs;
- two or more header beams each supported at an upper end of a pair of the four or more hydraulic jack legs;
- a plurality of vertical links forming a chain suspended from one or more of the header beams;
- each link pivotally connected to another of the plurality of links, each link further including two stop surfaces on opposing sides of the link;
- a support plate below a header beam for moving from a disengaged position wherein the links pass by the support plate to an engaged position wherein the plurality of hydraulic jack legs lower a link to engage the support surface and thereby suspend the load from the support plate;
- and
- rigging to connect the load to the chain, such that a link may supported on the support plate and fluid pressure relieved from the plurality of hydraulic jack legs as the hydraulic jack legs are lowered.
4 more elements
A hydraulic gantry for lifting and moving a load, comprising:
- a plurality of hydraulic jack legs;
- one or more header beams supported at an upper end of the hydraulic jack legs;
- a plurality of vertical links forming a chain suspended from one or more of the header beams, the chain comprising two spaced apart and substantially parallel plates forming a link, and a third plate pivotally connected to the two plates and forming another link;
- each link pivotally connected to another of the plurality of links, each link further including two planar stop surfaces thereon on opposing sides of the link;
- a support plate below a header beam for moving from a disengaged position wherein the links pass by the support plate to an engaged position wherein the plurality of hydraulic jack legs lower a link to engage the support surface and thereby suspend the load from the support plate;
- and
- rigging to connect the load to the chain, such that a link may supported on the support plate and fluid pressure relieved from the plurality of hydraulic jack legs as the hydraulic jack legs are lowered.
4 more elements
Dependencies are inferred from the claim text.