| 摘要 |
<p>A tractive force sensing system for tractor provided with a hydraulic device for tractor having a draft control function to actuate an oil pressure control valve through a draft cam by tractive load from lower links. Tractive force will be sensed by the resilient bent and deformation of a lower link support, and such bent and deformation of the support will be converted into the swing of a first feedback link 35', thereby to directly actuate a draft cam, whereby an oil pressure control valve interlockingly connected to the draft cam will be actuated.</p> |
