Powered lifting apparatus using multiple booms

A lifting apparatus for lifting a multi-ton package, comprising:

• a) a plurality of carriages that define a structural base for supporting a load, at least some of the carriages being movable;
• b) a truss supported by the plurality of carriages, the truss defining a load transfer between the carriages and the multi-ton package to be lifted;
• c) the truss including multiple booms extending respectively from the plurality of carriages;
• d) wherein a first pair of carriages of said plurality of carriages supports a first pair of said multiple booms with boom upper end portions that are connected together at a first boom apex;
• e) wherein a second pair of carriages of said plurality of carriages supports a second pair of said multiple booms with boom upper end portions that are connected together at a second boom apex;
• f) means for bringing the carriages and booms together so that the booms of the first pair increase in inclination during lifting;
• and
• g) a variable length cross brace member that spans between the upper end portion at least one boom of the first pair of booms and the upper end portion of at least one boom of the second pair of booms.

A lifting apparatus for lifting multi-ton packages, comprising:

• a) a plurality of booms including a first pair of booms and a second pair of booms, each pair of booms having lower boom end portions, and upper boom end portions that are pinned together at a pinned connection defining a boom apex;
• b) a first ground engaging interface that supports the first pair of booms and that includes a variable length tensile member that enables the lower end portions of the first pair of booms to be pulled together and thereby elevate the apex of the first pair of booms;
• c) a second ground engaging interface that supports the second pair of booms and that includes a variable length tensile member that enables the lower end portions of the second pair of booms to be pulled together and thereby elevate the apex of the second pair of booms;
• d) each ground engaging interface including movable carriages that enable the lower end portions of the booms of each pair to travel toward and away from each other during a lift;
• e) rigging that extends between the booms and the package to be lifted;
• f) cross bracing that extends between a boom of the first pair and a boom of the second pair;
• and
• g) the cross bracing including one or more variable length cross braces.

A lifting apparatus for lifting multi-ton objects, comprising:

• a) a first lifting truss having an apex, the first truss including a pair of booms, each with an upper boom end portion, said end portions being connected together at an apex;
• b) a second lifting truss having an apex, the second truss including a pair of booms, each with an upper boom end portion, said end portions being connected together at an apex;
• c) each of the trusses including a load transfer interface at the respective lower end portions of the trusses for providing a load transfer interface between the trusses and an underlying support surface, each lifting truss including a variable length tensile member that can pull the booms together, elevating its apex;
• d) multiple cross bracing connections that span between booms and that includes one or more variable length cross braces that extends between two booms of different of the trusses;
• and
• e) at least one of the cross bracing connections spanning between the trusses near the upper end portions thereof.

A lifting apparatus for lifting multi-ton packages, comprising:

• a) a plurality of booms including a first pair of booms and a second pair of booms, each pair of booms having lower boom end portions, and upper boom end portions that are pinned together at a pinned connection defining a boom apex;
• b) a first ground engaging interface that supports the first pair of booms and that includes a variable length tensile member that enables the lower end portions of the first pair of booms to be pulled together and thereby elevate the apex of the first pair of booms;
• c) a second ground engaging interface that supports the second pair of booms and that includes a variable length tensile member that enables the lower end portions of the second pair of booms to be pulled together and thereby elevate the apex of the second pair of booms;
• d) rigging that extends between the booms and the package to be lifted;
• and
• e) variable length cross bracing that extends between a boom of the first pair and a boom of the second pair.