Title:
SPEED CHANGE CONTROLLING DEVICE OF TRACTOR
Document Type and Number:
Japanese Patent JPH01172037
Kind Code:
A
Abstract:
PURPOSE:To always enable smooth start by using such a means that, when a working speed is specified, start is made at this speed and that, when a running speed is specified in a range for greater speed than working speed, start is made at the working speed and thereafter the speed is automatically changed to the specified running speed. CONSTITUTION:A front-to-back turnable advance-reverse lever 7 is provided on one side of the operating seat 2 of a tractor, and a vehicle is advanced or reversed by use of the lever. Also, on the side of the advance-reverse lever 7 and along the longitudinal long hole of an operator panel are independently and displaceably provided an advance speed provider 19 and a reverse speed provider 20. A working speed or running speed is specified by selecting the position of a transmission using these speed providers 19 and 20. When the working speed is specified by the advance speed provider 19 taking, out of each speed change step, a lower speed range of an advancing position as the working speed and a higher speed range as the running speed, transmission and starting are made at the speed change position of the specified working speed. On the other hand, when the running speed is specified, starting is made at the working speed and thereafter speed change is made at the speed change position of the specified running speed.
Inventors:
KANEFUJI YUJI
Application Number:
JP33152787A
Publication Date:
July 06, 1989
Filing Date:
December 25, 1987
Export Citation:
Assignee:
ISEKI AGRICULT MACH
International Classes:
B60K31/00; F16H59/08; F16H59/10; F16H59/44; F16H59/54; F16H61/02; F16H61/18; (IPC1-7): B60K31/00; F16H5/40