Multiple position wire rope guide
First Claim
Patent Images
1. A crane having an upper works rotatably mounted on a lower works comprising:
- a) a boom pivotally connected to said upper works, said boom comprising a boom butt and a removable boom top, said boom butt having an interior side, an exterior side, and an end, said end adapted to connect to said boom top;
b) a load hoist line for lifting loads; and
c) a wire rope guide connected to said boom butt for guiding said load hoist line, said wire rope guide comprising two or more sheaves, each sheave being supported by a frame, wherein at least one of said frames is pivotally connected to said boom butt so as to permit at least one of said sheaves to be positionable between a first location adjacent to said interior side of said boom butt when said boom top is connected to said boom butt and a second location adjacent to said end of said boom butt when said boom top is not connected to said boom butt, said first location being spaced outwardly from said interior side of said boom butt so as to guide said load hoist line to said boom top, said second location being near said exterior side of said boom butt so as to guide said load hoist line around said end of said boom butt to permit the lifting of loads.
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0 Petitions
Accused Products
Abstract
A crane having an upper works rotatably mounted on a lower works, a boom comprising a boom butt and a boom top, a load hoist line, and a wire rope guide connected to the boom butt. The wire rope guide is pivotable between a first position on the end of the boom butt and a second position on the upper side of the boom butt. While in the first position, the wire rope guide permits the load hoist line to be used to lift objects when the boom top has been removed from the crane. The crane also comprises a method of repositioning the wire rope guide during assembly of the crane.
24 Citations
19 Claims
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1. A crane having an upper works rotatably mounted on a lower works comprising:
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a) a boom pivotally connected to said upper works, said boom comprising a boom butt and a removable boom top, said boom butt having an interior side, an exterior side, and an end, said end adapted to connect to said boom top; b) a load hoist line for lifting loads; and c) a wire rope guide connected to said boom butt for guiding said load hoist line, said wire rope guide comprising two or more sheaves, each sheave being supported by a frame, wherein at least one of said frames is pivotally connected to said boom butt so as to permit at least one of said sheaves to be positionable between a first location adjacent to said interior side of said boom butt when said boom top is connected to said boom butt and a second location adjacent to said end of said boom butt when said boom top is not connected to said boom butt, said first location being spaced outwardly from said interior side of said boom butt so as to guide said load hoist line to said boom top, said second location being near said exterior side of said boom butt so as to guide said load hoist line around said end of said boom butt to permit the lifting of loads. - View Dependent Claims (2, 3, 4)
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5. A crane having an upper works rotatably mounted on a lower works comprising:
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a) a boom pivotally connected to said upper works, said boom comprising a boom butt and a removable boom top, said boom butt having an interior side, an exterior side, and an end, said end adapted to connect to said boom top; b) one or more load hoist lines for lifting loads; and c) a wire rope guide for guiding said load hoist lines, said wire rope guide comprising two or more sheaves, each said sheave being supported by a sheave frame connected to said boom butt, said sheaves being located outwardly from said interior side of said boom butt so as to guide said load hoist lines to said boom top, wherein at least one of said sheave frames is pivotable so as to permit one of said sheaves to be moved to a secondary position on said end of said boom butt when said boom top has been removed from said crane, said secondary position being near said exterior side of said boom butt so as to guide one of said load hoist lines around said end of said boom butt to permit the lifting of loads. - View Dependent Claims (6, 7, 8)
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9. A crane having an upper works rotatably mounted on a lower works comprising:
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a) a boom pivotally connected to said upper works, said boom comprising a boom butt and a removable boom top, said boom butt having an interior side, an exterior side, and an end, said end adapted to connect to said boom top; b) a load hoist line for lifting loads; and c) a wire rope guide connected to said boom butt for guiding said load hoist line, said wire rope guide comprising a first sheave supported by a first frame and a second sheave supported by a second frame, wherein said first frame is pivotally connected to said boom butt so as to permit said first sheave to be positionable between a first location adjacent to said interior side of said boom butt when said boom top is connected to said boom butt and a second location adjacent to said end of said boom butt when said boom top is not connected to said boom butt, said first location being spaced outwardly from said interior side of said boom butt so as to guide said load hoist line to said boom top, said second location being near said exterior side of said boom butt so as to guide said load hoist line around said end of said boom butt to permit the lifting of loads. - View Dependent Claims (10, 11, 12)
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13. A crane having an upper works rotatably mounted on a lower works comprising:
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a) a boom pivotally connected to said upper works, said boom comprising a boom butt and a removable boom top, said boom butt having an interior side, an exterior side, and an end, said end adapted to connect to said boom top; b) a first load hoist line for lifting loads; c) a second load hoist line for lifting loads; and d) a wire rope guide comprising a first sheave for guiding said first load hoist line and a second sheave for guiding said second load hoist line, said first sheave being supported by a first sheave frame connected to said boom butt, said second sheave being supported by a second sheave frame connected to said boom butt, said first and second sheaves being located outwardly from said interior side of said boom butt so as to guide said first and second load hoist lines to said boom top, wherein said first sheave frame is pivotable so as to permit said first sheave to be moved to a secondary position on said end of said boom butt when said boom top has been removed from said crane, said secondary position being near said exterior side of said boom butt so as to guide one of said load hoist lines around said end of said boom butt to permit the lifting of loads. - View Dependent Claims (14, 15, 16, 17, 18)
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19. A crane having an upper works rotatably mounted on a lower works comprising:
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a) a boom pivotally connected to said upper works, said boom comprising a boom butt, a removable boom top, and one or more removable boom inserts, said boom butt having an interior side, an exterior side, and an end, said interior side and said end joining together to form an interior edge, said exterior side and said end joining together to form an exterior edge, said end adapted to connect to said boom inserts; b) a first load hoist line for lifting loads; c) a second load hoist line for lifting loads; and d) a wire rope guide for guiding said first and second load hoist lines, said wire rope guide comprising a first sheave for guiding said first load hoist line and a second sheave for guiding said second load hoist line, said first sheave being supported by a first sheave frame, said second sheave being supported by a second sheave frame, said first sheave frame being pivotally connected to said interior edge of said boom butt and removably connected to said second sheave frame, said second sheave frame being connected to said interior side of said boom butt, said first sheave being located outwardly from said interior side of said boom butt so as to guide said first load hoist line to said boom top, said second sheave being located outwardly from said interior side of said boom butt so as to guide said second load hoist line to said boom top, wherein said first sheave frame is pivotable so as to permit said first sheave to be moved to a secondary position on said end of said boom butt when said boom inserts and said boom top have been removed from said crane, said secondary position being near said exterior edge of said boom butt so as to guide one of said load hoist lines around said end of said boom butt to permit the lifting of loads.
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Specification