| 摘要 |
A drain plug assembly for insertion into a drain outlet through the floor of a rotary dump container. The drain plug assembly comprises a plug member, a washer and a securing mechanism. The plug member has a shank and a plug head. The shank is insertable into the drain outlet and includes an upper shank portion and a lower shank portion. The diameter of the lower shank portion is less than the diameter of the upper shank portion so as to define a shoulder along the shank. The washer is slidably fit on the lower shank portion. The securing mechanism secures the washer onto the lower shank portion so as to allow the washer to slide a predetermined distance on the lower shank portion and impact on the shoulder.
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