复摆腭式破碎机是曲柄摇杆机构,因此,曲柄半径的优化问题是设计者们所关心的。破碎机工作时要求动腭上部摆动行程要满足给矿粒度的要求,下部摆动行程满足排矿粒度要求,并尽可能缩小动腭运动的垂直行程与水平行程之比。曲柄大小是机构设计好坏的标志之一,它直接关系到动腭运动轨迹、生产率及功率消耗等。以往的设计多是按类比法与作图法选取曲 Complex pendulum palate crusher is a crank rocker mechanism, so the optimization of the crank radius is of concern to designers. Crusher work requires the upper swing palate swing to meet the requirements of ore particle size, the lower swing stroke to meet the requirements of ore discharge size, and as far as possible to reduce the movement of the palate movement of the vertical and horizontal stroke ratio. Crank size is one of the hallmarks of the design of the mechanism, which is directly related to the motion palate trajectory, productivity and power consumption. In the past, many designs were based on analogy and drawing method