Methods for Improving the Knuckle Boom Capacity in Truck-Mounted Cranes

[+] Author and Article Information
B. N. Sridhar

General Electric Company, San Jose, Calif.

J. Eng. Ind 98(4), 1183-1187 (Nov 01, 1976) (5 pages) doi:10.1115/1.3439079 History: Received January 13, 1976; Online July 15, 2010


Presented herein are two different concepts for improving the knuckle boom capacity of truck-mounted cranes. The first concept deals with an improved Planar four-bar linkage using the two-position synthesis, as well as with recommendations for optimizing the linkage. The linkage design employing the two-position synthesis was built as hardware with fairly close agreement between calculated and test data. The second concept is concerned with a constant moment-arm mechanism using a rack and pinion arrangement.

Copyright © 1976 by ASME
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