Motor grader with high-lift and lock arrangement

Details Motor grader with high-lift and lock arrangement Motor grader with high-lift and lock arrangement

1987-02-18

1989-08-01

Stouffer, Richard T.

Earth working

Scraper between front and rear ground supports of vehicle

Actuator for bodily shifting scraper subframe draft connection

172793, 172797, E02F 376

Patent

active

048526592

ABSTRACT:
A blade lift and support system for a road grader is taught which is of simplified construction and improved geometry. According to one embodiment, the adjustment of the beam and associated grader blade is fully hydraulically controlled including locking of the beam in a desired position and maintaining the beam position by an hydraulic fluid lock. This preferred arrangement permits full power adjustment of the high-lift while the blade is in a lifted condition. The particular beam shape improves the position of the cylinders to effect positioning the blade for working.

REFERENCES:
patent: 2655743 (1953-10-01), Ross
patent: 3455400 (1969-07-01), Hanser et al.
patent: 4340119 (1982-07-01), MacDonald
"JD670-A", brochure by Deere & Co., Moline, Ill.
"Caterpillar 140 G Motor Grader", Caterpillar Ins., Peoria, Ill., pp. 314,315,330,331.
"GD825A-1", Komatsu, Tokyo, Japan.
"Champion 710", brochure by Champion, Ltd., Goderich, Ontario, Canada.
"Champion 720/720A", brochure by Champion Ltd., Goderich, Ontario, Canada.
"Champion All Wheel-Drive C4+2", brochure by Champion, Ltd., Goderich, Ontario, Canada, Published 1984.

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