Material or article handling – Vertically swinging load support – Shovel or fork type
Patent
1979-01-05
1981-02-10
Sheridan, Robert G.
Material or article handling
Vertically swinging load support
Shovel or fork type
414912, 414917, B66F 900
Patent
active
042498546
ABSTRACT:
A rubber tired self powered mine vehicle utilizing a low profile fork lift assembly for handling palletized materials underground. The fork lift assembly consists of a fork lift plate and a parallel spaced apart base plate. The base plate is attached to the front of a mining vehicle by bucket mounting hole. The position of the base plate relative to the mine vehicle may be adjustable. The upper part of the fork lift plate is attached to the upper part of the base plate by set of horizontally spaced apart pivot links. The lower part of the fork lift plate is attached to the lower part of the base plate by a set of spaced apart pitmans. The long arm of each pitman extends between the base plate and the fork lift plate, while the short arm extends upward from the connection to the base plate. The short arm of the pitmans are engaged by hydraulic cylinders for raising and lowering forks which extend from the fork lift plate. The hydraulic operating cylinders are disposed behind the spaced plate and the operating rods extend through appropriate openings formed in the base plate. The body of the mine vehicle is suspended from its axles by hydraulic axle suspensions. By raising the front of the mine vehicle frame and lowering the rear or vice versa additional movement of the forks is possible. Mounted in the center end, between the base plate and the fork lift plate, are a pair of links having horizontally offset connection points to prevent side way movement of these plates.
REFERENCES:
patent: 3349933 (1967-10-01), Simpson et al.
Pyott-Boone Machinery Corporation
Sheridan Robert G.
Yeager Robert D.
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