Final drive gear ratio selection system for a harvester
First Claim
1. A method of selecting a final drive gear ratio in a harvester hydrostatic transmission comprising the steps of selecting the desired ratio by manually depressing a button on a control panel, manually placing the hydrostatic transmission into neutral before the automatic change in final drive ration can be performed, automatically activating a brake to bring and maintain the harvester at a standstill in response to the depression of the button on the control panel, and activating a gear selection mechanism to select the desired gear ratio only after the harvester has come to a complete stop.
2 Assignments
0 Petitions
Accused Products
Abstract
A method and a system are disclosed for selecting the final drive gear ratio in a harvester. The method comprises the steps of selecting the desired ratio by manually depressing a button on a control panel, automatically activating a brake to bring the harvester to a standstill in response to the depression of the button on the control panel, and activating a gear selection mechanism to select the desired gear ratio only after the harvester has come to a complete stop.
18 Citations
13 Claims
- 1. A method of selecting a final drive gear ratio in a harvester hydrostatic transmission comprising the steps of selecting the desired ratio by manually depressing a button on a control panel, manually placing the hydrostatic transmission into neutral before the automatic change in final drive ration can be performed, automatically activating a brake to bring and maintain the harvester at a standstill in response to the depression of the button on the control panel, and activating a gear selection mechanism to select the desired gear ratio only after the harvester has come to a complete stop.
-
4. A system for selecting the drive ratio of a multiple ratio mechanical gearbox in a harvester having an engine connected to drive the harvester through a transmission line that includes the said mechanical multiple ratio gearbox and having a brake for preventing movement of the harvester, the system comprising:
-
a. an electrical gear selection panel having a plurality of buttons for manual selection of the desired drive ratio; b. a gear selector mechanism on the gearbox; c. a gear change actuator for displacing the gear selector mechanism to select the desired gear; d. an electrical control circuit for energising the gear change actuator in response to manual depression of a button on the gear selection panel; e. a manual hydrostatic gear lever; and f. a control circuit responsive to both the placing of the hydrostatic lever into neutral and the pushing of the button to energize the gear change, whereby the electrical control circuit is operative to actuate the brake to bring and maintain the harvester at a complete stop before energising the gear change actuator to effect a gear change. - View Dependent Claims (5, 6)
-
-
7. A system for selecting the drive ratio of a multiple ratio mechanical gearbox in a harvester having an engine connected to drive the harvester through a transmission line that includes the said mechanical multiple ratio gearbox and having a brake for preventing movement of the harvester, the system comprising:
-
a. an electrical gear selection panel having a plurality of buttons for manual selection of the desired drive ratio; b. a gear selector mechanism on the gearbox; c. a gear change actuator for displacing the gear selector mechanism to select the desired gear; and d. an electrical control circuit for energising the gear change actuator in response to manual depression of a button on the gear selection panel, whereby the electrical control circuit is operative to actuate the brake to bring and maintain the harvester at a complete stop before energising the gear change actuator to effect a gear change. - View Dependent Claims (8, 9, 10, 11, 12, 13)
-
Specification