固定颚板

固定颚板是颚式破碎机中的关键耐磨部件，安装在固定机架上，与动颚相对。它构成破碎腔的一侧，岩石、矿石和骨料等原料在此被压缩在动颚板之间。其固定位置为动颚的往复运动提供反作用面，从而产生实现粒度减小所需的压缩力。颚板的几何形状、齿形和材料成分直接影响破碎效率、产品级配和耐磨性。

基于挤压破碎原理。当动颚板向固定颚板往复运动时，进入破碎腔的物料被夹在两个表面之间并被压缩。固定颚保持静止，提供反作用面，从而能够产生高压缩力（通常为100-350 MPa），通过超过其抗压强度的机械应力使脆性材料断裂。

Works on the principle of compressive crushing. As the movable jaw plate oscillates toward the fixed jaw plate, material fed into the crushing chamber is trapped and compressed between the two surfaces. The fixed jaw remains stationary, providing a reaction surface that enables the generation of high compressive forces (typically 100-350 MPa) to fracture brittle materials through mechanical stress exceeding their compressive strength.