| 摘要 |
2105484 9316909 PCTABS00025 A stabilizer for a multi-trailer rig has a cylinder assembly including a cylinder (A) and a piston rod (E) pivotally mounted between a front trailer (11) on one end and a wheeled dolly (10) at H exerting a force which at all times is in a direction tending to bring the dolly (10) into alignment and thereby bring a rear trailer (12) which follows the dolly (10) into alignment. A pair of such cylinder assemblies may be provided with each having a central stop member (B) carried internally of a cylinder (A) with pistons (C and D) on each respective side for effectively moving to pull or to push until such action may be reversed following engagement of a piston (C or D) with the central stop member (B). Exerting control over alignment of the dolly (10) stabilizes the trailers and continues to exert a force to maintain alignment, yet permits turning. A locking clutch member (I) may be manually fixed to limit movement of the cylinder (a) and piston rod (E) thereby preventing the dolly (10) from coming out of alignment during backing. An anti-jackknifing apparatus includes a stop (j) pivoted downwardly from the trailer into the slot of the tractor fifth wheel.
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