| 摘要 |
PURPOSE: An endurance test device for steering a system of the commercial vehicles is provided to exactly perform an endurance test by realizing external force from a road surface having the same conditions as that applied to a real vehicle. CONSTITUTION: An endurance test device for steering the system of commercial vehicles includes a steering wheel(1), a steering column(2), a gear box(3), a pitman arm(4), a drag link(5), a knuckle arm(6), a spindle(7), an external force realizing device, and a vehicle shaft(10). The spindle(7) is connected to the vehicle shaft through a king pin(9). The spindle(7) is integrated with the king pin(9). An extension end(9a) is formed at a lower end of the king pin(9). The external force realizing device(11) exerts a rotation force on the lower part of the extension end(9a). The external force realizing device(11) has a motor generating the rotation force.
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