Instead of the fixed horsehead, a rotary horsehead is adopted, which is hinged with one end of the added fiont pitman and can realize seir rotation with the motion of the walking beam.

 
  • 主要改造內容是將固定式驢頭改為旋轉驢頭,后者通過(guò)與增設的前連桿一端的鉸接,可在游梁運動(dòng)的同時(shí)實(shí)現自轉。驢頭公轉和自轉的沖程迭加,便達到增加沖程的目的。同時(shí)增添了曲柄副平衡塊,以提高平衡扭矩。
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