抄録
The static side-overturning angle of 4 wheel tractor is expressed as functions of the location of gravity, tread, wheelbase, rotating angle of front axle around the center pivot and so on (Eg. (6), (7)).
The results derived from these functions are summarized as follows:
(1) The critical angle increases as the height of center of gravity decreases, the tread increases, and the center of gravity transfers rearward.
(2) The critical angle increases as the location of hinge point connecting the front axle with chassis becomes higher.
(3) Reduction of the rotating angle of front axle is recommended for safety operation, as it can prevent unstability caused by mounting of implement.
