| 摘要 |
PURPOSE:To obtain reliable braking function in such a way that a hydraulic driving disc brake is installed on a wheel axle of a trekker, and when stopping a tractor, wheels are braked by actuating the brake through inertia of a trailer. CONSTITUTION:Plural wheels 3 are juxtaposed through bearings 7 on the rear frame 6 of a trekker 1. A hydraulic driving disc brake 8 is arranged on the wheel axle 3a on the innermost wheel sides. A turning frame 9 is installed on the frame 6, and a tire supporting stand 4 for a trailer is fitted at the outer end part of the frame 9. A cylinder 18 is fixed on the outer frame 6 of the trekker body 5, and a piston 19 is inserted to the cylinder 18. The piston 19 is brought into contact with the wall face 17a of the inner frame 17, when suddenly stopping the tractor, it thrusts into the cylinder 18 through inertial action of the trailer, oil pressure is generated in the cylinder 18, and the brake 8 is actuated under oil pressure. |
