Material or article handling – Vertically swinging load support – Shovel or fork type
Patent
1992-09-21
1993-09-14
Huppert, Michael S.
Material or article handling
Vertically swinging load support
Shovel or fork type
414694, E02F 332, E02F 338, E02F 908, E02F 916
Patent
active
052443370
ABSTRACT:
In the case of an excavator, particularly a shovel excavator, the superstructure is held on an undercarriage so that it can be swivelled around a first vertical axis. A jib is held on the superstructure by way of a boom swivelling block which receives the jib in a supporting manner so that it can be swivelled around a second vertical axis of rotation. A swivel device is connected with the boom swivel block and comprises a hydraulic cylinder which is connected with the swivel block by way of a guide rod. The boom swivel block with the jib can be rotated by way of a driven crank mechanism from a forward working end position extending diagonally to the longitudinal center axis of the excavator, about the second vertical axis of rotation, into a transport position which is swivelled back with respect to the driving direction. In this transport position, the jib is arranged in parallel with respect to the longitudinal center axis and laterally of the superstructure, permitting a driving of the excavator in road traffic at a relatively high speed.
REFERENCES:
patent: 3430503 (1969-03-01), McLaughlin
patent: 3669286 (1972-06-01), Gauchet
patent: 3717269 (1973-02-01), Schaeff
patent: 4378193 (1983-03-01), Schaeff
patent: 4571147 (1986-02-01), Schaeff
patent: 4728251 (1988-03-01), Takashima et al.
Dr. Ing. h.c.F. Porsche AG
Eller Jr. James T.
Huppert Michael S.
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