Combine harvester rotor speed control and control method

Details Combine harvester rotor speed control and control method Combine harvester rotor speed control and control method

1997-11-04

1999-02-23

Will, Thomas B.

Harvesters

Motorized harvester

Including plural operating units and drive

56 102G, A01D 4100

Patent

active

058732276

ABSTRACT:
The combine harvester has a threshing and separating rotor with a threshing cylinder section that cooperates with a concave to thresh crop material. A hydraulic motor drives the rotor. A hydraulic pump, driven by an internal combustion engine, supplies hydraulic fluid to the hydraulic motor to drive the rotor. An electronic controller receives a rotor speed measurement from a speed sensor and compares the rotor speed with a selected threshing and separating rotor speed selected by an operator of the harvester and stored in the electronic controller. When the rotor speed varies from the selected rotor speed, the electronic controller sends a signal to a displacement control to change the threshing and separating rotor speed to approach the selected rotor speed. The displacement control can reverse the flow of hydraulic fluid to the hydraulic motor to reverse the direction of rotor rotation.

REFERENCES:
patent: 4337611 (1982-07-01), Mailander et al.
patent: 4348855 (1982-09-01), DePauw et al.
patent: 4466231 (1984-08-01), Rowland-Hill et al.
patent: 4893241 (1990-01-01), Girodat et al.
patent: 5666793 (1997-09-01), Bottinger
Eaton Hydraulics Division, "Installation & Operating Instructions, Eaton Heavy Duty Hydrostatic Transmissions, Electronic Transit Mixer Control" Copyright 1992 Eaton Corporation.
"Massey 8560" Massey Combines Corporation (no date).
"Massey 8560 Rotary Combine" Massey Ferguson (no date).

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