| 摘要 |
Towing apparatus mounted on the rear of a towing vehicle for lifting and towing disabled vehicles includes an extendible boom assembly positionable beneath the undercarriage of the vehicle to be towed. The boom assembly is carried by a vertically and pivotably movable housing assembly mounted on the towing vehicle and is pivotable relative to the housing assembly. The boom assembly includes a number of extendible boom stages telescopically mounted within first and second stage boom members, the first stage boom member being pivotably mounted on the housing assembly. Second stage boom member is mounted within and pivotable relative to the first stage boom member about a vertical axis so as to move from side-to-side, the extendible boom stages moving with the second stage boom member. The first stage boom member has an enlarged mouth through which the second stage boom member extends, the large mouth permitting the second stage to have substantial sideways movement. The extendible boom members may be moved vertically, tilted relative to the vertical, moved side-to-side and extend and retract so as to provide a towing vehicle operator with a multitude of positioning capabilities.
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