PEF400×600颚式破碎机的皮带轮和飞轮与偏心轴采用φ130D_4/d_4加平键联接,轮毂长度为260毫米,轴颈长度为310毫米,其结构如图1。这种联接形式在冲击和交变载荷下,容易把键槽压溃,产生轴向串动。虽在轴端设有压板用2只M16×40螺钉固定,但由于轮子串动,螺钉被拉断,造成事故。我矿选矿厂使用的PEF400×600颚式破碎机就是实例。我们在1984年9月将原结构改用锥套联接,通过两年来的使用证明,这种联接安全可靠。锥套联接结构如图2。 PEF400 × 600 jaw crusher pulley and flywheel with eccentric shaft φ130D_4 / d_4 plus flat key connection, the hub length of 260 mm, the journal length of 310 mm, the structure shown in Figure 1. This form of connection in the impact and alternating load, easy to crush the keyway, resulting in axial series. Although the shaft end with a plate with two M16 × 40 screws, but due to the wheel string move, the screws were pulled off, causing an accident. The PEF400 × 600 Jaw Crusher used at mine concentrator is an example. In September 1984, we changed the original structure to taper sleeve, which proved safe and reliable after two years of use. Taper sleeve connection structure shown in Figure 2.