| 摘要 |
PROBLEM TO BE SOLVED: To prevent excessive force from concentrating at a part of a link mechanism and to make side shifting easy. SOLUTION: This device has front wheel shafts 1 to 3 and rear wheel shafts 5, 6, a hydraulic system 20 for supplying oil from oil pumps 13, 14 to the power cylinders of the wheel shafts according to the revolution of a steering wheel 15, a link mechanism 40 for transmitting the revolution to the steering mechanism 7 of each wheel shaft, and a load limiter 70 for absorbing abnormal load and both front wheels and both rear wheels are synchronously steered in a reverse direction according to the revolution of the steering wheel 15. The device has a selector valve 60 which can be switched between an open position for flowing oil sent to the power cylinder 8 of the rear wheel shafts 5, 6 from the oil pump 14 and a closed position for shutting off the oil and an operating lever for manually switching the selector valve. |
