Device for maintaining an upright position of the body of a harvester-thresher machines
AssigneeInstitutul de Cercetari si Proiectari de Masini Agricole - ICPMA
InventorsMihail Duca, Dan Vasiliu, Teodor Demetrescu, Ion Cimpoias, Ion Linca, Stefan Breazu, Virgil Antonescu, Iosif Cojocaru
Life of this patent
Estimating the term…
Abstract
A harvester-thresher machine having a body flanked by a pair of hydraulic cylinders for tilting the body of the machine into an upright position in response to a tilt of the harvester-thresher, the cylinders being selectively connected to a source of pressurized liquid whose rate of flow is automatically adjusted in response to the degree of tilt of the machine.
Claims10
A device for maintaining an upright position of the body of a harvester-thresher machine comprising:
- a pair of hydraulic cylinders flanking said body for the tilting thereof along a longitudinal axis of said machine;
- a source of pressurized liquid including a continuously operating pump having a constant output;
- means for selectively connecting said source of pressurized liquid to each of said hydraulic cylinders;
- and
- means automatically responsive to the tilt of said body for adjusting the rate of flow of said pressurized liquid to said cylinders, said means for adjusting the rate of flow comprising:
- a flow controller responsive to the tilt of said body tapping the connection between said pump and said cylinders;
- and
- an adjustable valve responsive to said flow controller and connected between said controller and said tap, said flow controller comprising:
- a cylindrical housing mounted in said body and having a longitudinal axis;
- a rotary body journaled in said housing and shiftable along said axis;
- a plurality of passageways formed in said rotary body and communicating beween the periphery thereof and one end thereof;
- a plurality of inlets formed in the periphery of said cylindrical housing in alignment with said passageways;
- means on said cylindrical housing for axially shifting said rotary body to misalign said passageways with said inlets for adjusting the rate of flow of said pressurized liquid according to the viscosity thereof;
- a pendulum connected to said rotary body for stabilizing said rotary body during the tilting of said machine and further misaligning said passageways with said inlets for adjusting the flow of said pressurized liquid in response to the tilting of said machine.
A device for maintaining the upright stance of the body of a harvester-thresher adapted to travel over irregular terrain, comprising:
- a pendulum (6) swingably mounted on said body (5) for assuming different angular positions corresponding to two variations in the angular positions of the body (5) as the harvester-thresher travels over said terrain;
- a flow controller (B) connected with said pendulum (6) and controlled thereby;
- an adjustable valve (A) commanded by said flow controller (B);
- an hydraulic fluid pump (1) connected hydraulically in circuit with said valve (A) and said flow controller (B), said flow controller (B) and said valve (A) bypassing a portion of the fluid delivered by said pump (1) in dependence upon the tilting angle of said body (5) of the harvester-thresher;
- an electrically activated distributor (2) connected to said pump;
- hydrostatic cylinders (4) connected to said body (5) of the harvester-thresher and hydraulically supplied through said distributor (2) with the remainder of the fluid delivered by said pump to displace said body (5) back into an upright position from a tilting position.
Dependencies are inferred from the claim text.