为了调整、拆装方便,柴油机上大量采用了可拆卸的连接,如螺纹连接、键及紧配合等。这些零件主要依靠配合件之间的摩擦力来维护相对位置,如果没有防松装置或防松装置失效,在长期反复载荷(尤其是交变载荷)的作用下,便很容易松动。因此,对工作中承受交变载荷的连接部件及没有自动防松装置的连接件,应经常检查连接紧度,若发现必须及时旋紧。柴油机紧固件常见的损坏形式有如下 In order to adjust, easy disassembly, diesel engine uses a large number of removable connections, such as threaded connections, keys and tight fit. These parts rely primarily on the friction between the mating parts to maintain their relative position, which can easily be loosened by long-term repeated loads (especially alternating loads) without the use of anti-loosening or anti-loosening devices. Therefore, the work to withstand alternating load connection components and connectors without automatic anti-loose device, should always check the connection tightness, if found must be promptly tightened. Diesel engine fasteners common damage forms are as follows