| 摘要 |
A towing pintle assembly 10 comprises a main body portion 18 attached by a flange 14 to the vehicle body. A hook 24 is pivotally coupled at its mid region to the main body by a pivot 22 . To the upper end of the hook 24 is pivotally connected a locking lever 32 . The locking lever may be swung between a locking position in which locking surfaces 34 thereon abut an abutment 36 to prevent opening of the hook and a free position in which the hook may open. The locking lever 32 may be moved to the free position either manually, or remotely by fluid-operated pistons 44 . A frangible sheer pin 46 holds the locking lever in the locking position.
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