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US 11,999,602 B2Granted
Boom assembly with translatable counterbalance mass
AssigneeTerex South Dakota, Inc.
InventorJames A. Donaldson
Life of this patent
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Abstract
A boom assembly according to the disclosure may include a lower boom structure, and an upper boom structure that is connected to the lower boom structure. In addition, the boom assembly may include a counterweight movably mounted on one of the boom structures and movable along the one boom structure when at least a portion of the lower boom structure is moved relative to the upper boom structure or when at least a portion of the upper boom structure is moved relative to the lower boom structure.
Claims19
A boom assembly comprising:
- a base;
- a support member connected to the base;
- a lower boom structure connected to the base so that the lower boom structure is pivotable with respect to the base between a lowered position of the lower boom structure and a raised position of the lower boom structure;
- an upper boom structure having a first end connected to the lower boom structure, and an opposite second end, wherein the upper boom structure is pivotable with respect to the lower boom structure between a lowered position of the upper boom structure and a raised position of the upper boom structure in which the second end is positioned above the lower boom structure;
- a counterweight movably mounted on the lower boom structure and movable along the lower boom structure when at least a portion of the lower boom structure is moved relative to the base;
- and
- a link having a first end pivotably connected to the counterweight and a second end pivotally connected directly to the support member.
4 more elements
A vehicle comprising:
- a chassis;
- a support member rotatably mounted on the chassis;
- a lower boom structure mounted on the chassis so that the lower boom structure is pivotable between a lowered position of the lower boom structure and a raised position of the lower boom structure;
- an upper boom structure having a first end attached to the lower boom structure, and an opposite second end, and wherein the upper boom structure is pivotable relative to the lower boom structure between a lowered position and a raised position in which the second end is positioned above the lower boom structure;
- a counterweight movably mounted on the lower boom structure and translatable along the lower boom structure when at least a portion of the lower boom structure is moved relative to the upper boom structure;
- and
- a drive member having a first end connected to the counterweight and a second end connected directly to the support member;
- wherein the lower boom structure has a first end pivotally connected to the support member, and a second end pivotally connected to the first end of the upper boom structure, and wherein the counterweight is movable along the lower boom structure between the first and second ends of the lower boom structure.
5 more elements
A boom assembly comprising:
- a base;
- a support member rotatably mounted on the base;
- a lower boom structure pivotally connected to the support member so that the lower boom structure is pivotable with respect to the support member and the base between a lowered position of the lower boom structure and a raised position of the lower boom structure;
- an upper boom structure connected to the lower boom structure and movable between a lowered position of the upper boom structure and a raised position of the upper boom structure;
- a counterweight movably mounted on the lower boom structure;
- and
- a link having a first end pivotably connected to the counterweight and a second end pivotally connected directly to the support member, wherein the link is configured to move the counterweight downwardly along the lower boom structure when the lower boom structure is moved from the lowered position of the lower boom structure to the raised position of the lower boom structure.
4 more elements
Dependencies are inferred from the claim text.