Harvesters – Motorized harvester – Having fluid-pressure or stored-energy motor
Patent
1985-02-19
1986-12-30
Hirsch, Paul J.
Harvesters
Motorized harvester
Having fluid-pressure or stored-energy motor
56DIG15, A01D 6903
Patent
active
046319077
ABSTRACT:
A hydraulic lifting apparatus for harvesting machines, the apparatus having a plurality of lifting cylinders connected to the undercarriage of the harvesting machine which support a mower table so that it rests on the ground with a minimal resting weight, and also having energy storing tanks to provide different suspension of the mower table. To accomplish this a hydraulically actuatable stop valve is located in a first circuit of working lines running between a distributing slide valve and the lifting cylinders. This stop valve is actuated by a control pressure which is branched from a second circuit of working lines. The second circuit of working lines runs from the distributing slide valve over a pressure relief valve to a reservoir, and is able to be disconnected by a solenoid valve. The stop valve has a valve element with a series of bores through which the pressure set by the pressure relief valve passes through the blocked first circuit of working lines into the lifting cylinders. Thereby the mower table automatically lowers with a preselected ground bearing force or selectively without the ground bearing force.
REFERENCES:
patent: 3563011 (1971-02-01), Bramley et al.
patent: 3808778 (1974-05-01), Hoffmeyer et al.
patent: 3832835 (1974-09-01), Hall et al.
patent: 3908345 (1975-09-01), Oni et al.
patent: 3918240 (1975-11-01), Haffner et al.
patent: 3953959 (1976-05-01), Decroyenaere
patent: 3992858 (1976-11-01), Hubbard et al.
patent: 4335561 (1982-06-01), Swanson et al.
patent: 4337611 (1982-07-01), Mailander et al.
patent: 4384443 (1983-05-01), Hoggstrate
Hirsch Paul J.
Robert & Bosch GmbH
Striker Michael J.
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