B - Operations – Transporting – 66 – C
Patent
B - Operations, Transporting
66
C
214/44
B66C 23/18 (2006.01) B66C 3/16 (2006.01)
Patent
CA 1116561
DPP/1kb/dl 22828 12/11/79 LOAD HANDLING VEHICLE WITH ROTATING GRAPPLE MECHANISM Abstract A load-lifting mechanism at the front of a lift truck carries an upright boom with a pair of parallel spaced-apart forwardly cantilevered boom portions rotatably supporting a horizontal pivot tube between their forward ends. A vertical pivot shaft rotatably carried by the pivot tube suspends a grapple beneath the cantilevered boom portions. The grapple includes a yoke mounting and a pair of grapple arms opened and closed by single or dual hydraulic cylinders. A mechanical link interconnects the grapple arms so that they open and close together and to the same extent. A pair of fluid cylinders on the canti- lever boom portions pivot the pivot tube to swing the shaft and grapple fore and aft. A rotation mechanism between the cantilever boom portions and their cylinders rotates the pivot shaft and connected grapple about the axis of the shaft. The mechanism is carried by a V-shaped framework supported by the pivot tube and includes a first fluid cylinder connected at one end to the framework and at the other end to a first floating lever rotatably mounted on the pivot shaft. A second floating lever connected to the first lever is also rotatable on the pivot shaft. A second fluid cylinder is connected at one end to the second lever and at the other end to a crank lever fixed to the shaft. By stroking these cylinders to operate the levers, the grapple can be pivoted in either direction through an arc of at least 180° about the axis of the shaft. -1-
335584
Herold William M.
Robnett James J.
Raygo Wagner Inc.
Smart & Biggar
LandOfFree
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