| 摘要 |
<p>A mechanism is provided for a fifth wheel to eliminate squirting and to provide automatic adjustment for slack in the locking system. The mechanism is able to keep the wedge (15) and jaw (16) of a fifth wheel locking mechanism and trailer king pin (Kp) within specified ranges of tolerance. The mechanism utilizes a self-adjusting or automatic ratchet lock system (27) which may be positioned to work in relation to the operating handle (30) or level arm (12) and utilizes the leverage forces available allowed by the design of the lever arm (12). The invention also provides for a fully retractable lock release pull handle (39) which may be retracted into the fifth wheel whether the locking mechanism is open or closed. The invention further incorporates electronic induction switches (34, 37) to indicate open and closed positions of the locking mechanism and to indicate whether the king pin (Kp) is properly seated in the locking mechanism. The design further incorporates replaceable strips of high impact resistant, low friction material (81, 82a, 82b) in the top plate (80) which eliminates the necessity of grease lubricant on the top surface.</p> |
