Title:
TRAVELING SPEED CONTROL DEVICE IN TRAILING VEHICLE
Document Type and Number:
Japanese Patent JPS57163758
Kind Code:
A
Abstract:
PURPOSE:To prevent the engine from working overload in such a way that both manual and automatic change-over valves are provided for feeding pressure oil to hydraulic clutches and draining it therefrom so as to detect that the farm working machine is involved in overload, and to automatically change the traveling speed over to a directly proximate low speed step. CONSTITUTION:Feeding and draining control of a manual change-over valve 41 by manual control, and traveling speed change is done by feeding pressure oil to hydraulic clutches 17 to 20. When the manual change-over valve 41 is set to the high speed position, and a load detector detects overload of the farm working machine, then a constantly open contact 51a is closed to change it over to an automatic change-over valve 44. A directly proximate low step of clutch among the hydraulic clutches 17 to 20 is engaged by changing over the automatic change-over valve 44 resulting in automatically stepping down the traveling speed change step.
Inventors:
MUKAI NAKASHIROU
Application Number:
JP4974181A
Publication Date:
October 08, 1982
Filing Date:
April 02, 1981
Export Citation:
Assignee:
ISEKI AGRICULT MACH
International Classes:
F16H61/02; F16H59/14; F16H59/50; F16H61/70; (IPC1-7): F16H5/58
Domestic Patent References:
| JPS5499864A | 1979-08-07 |