High-strength light-weight boom section for telescopic crane...

Details High-strength light-weight boom section for telescopic crane... High-strength light-weight boom section for telescopic crane...

B - Operations, Transporting

66

C

212/28.7

B66C 23/06 (2006.01) B66C 23/70 (2006.01)

Patent

CA 1143700

-27- HIGH-STRENGTH LIGHT-WEIGHT BOOM SECTION FOR TELESCOPIC CRANE BOOM ABSTRACT OF THE DISCLOSURE A high-strength light-weight hollow boom section for a multi-section telescopic crane boom comprises a top wall, a bottom wall, and a pair of lateral walls, each lateral wall being located between the top wall and the bottom wall. Each of the four walls comprises a pair of spaced apart longitudinally extending members, a relatively thin plate extending between, overlapping and welded to the pair of longitudinal members, and a plurality of longitudinally spaced part transversely extending stiffeners of U-shaped cross-sections, each stiffener being welded to the plate and to the pair of longitudinal members. Each longitudinal member of a lateral wall is in edge-wise abutting relationship with and welded to the surface of a longitudinal member of one of the top and bottom walls. Each stiffener of a lateral wall also have its ends in abutting relationship with and welded to the surface of a longitudinal member of the top and bottom walls. Novel slide pad arrange- ments are also disclosed.

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