论文部分内容阅读
前言一般螺纹紧固都具有自锁性,在静载荷下和工作温度变化不大时,不会自行松脱。但在受到冲击、振动或交变载荷作用下,以及在工作温度变化很大时,螺母会自行缓慢松脱。所以为了保证联接可靠、防止松动,就采取各种有效的防松措施。造成联接松动的原因是多方面的。例如柴油机汽缸盖螺栓、连杆螺钉等由于受轴向力周期性的变化,使螺钉、螺母朝反旋方向滑移后造成松动。螺母的垫片,由于弹性衰减,厚度变
Preface General threaded fastening has a self-locking, static load and little change in temperature, it will not loose itself. However, the nut will slowly loosen itself when subjected to shock, vibration or alternating loads, and when the operating temperature varies widely. Therefore, in order to ensure reliable connection, to prevent loosening, to take all kinds of effective anti-loose measures. The reason for the loose coupling is multifaceted. For example, diesel engine cylinder head bolts, connecting rod screws and other periodic changes due to axial force, so that screws, nuts in the anti-spin direction slip caused by loose. Nut washers, due to elastic attenuation, thickness change