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可能有的机手朋友会说:安装螺栓还有什么方向性?其实螺栓、螺母的安装方向很有讲究。下面举五个例子来说明。 例1 有的双头螺栓(如发动机气缸盖上的双头螺栓)一端丝扣长,另一端丝扣短。安装时一般应使丝扣较短的一端拧入机体或缸盖,丝扣较长的一端用来安装固定螺母,如果装反了,则可能丝扣不够用。 例2 对于带圆台的螺母(如S195型柴油机的气缸盖固定螺母),安装时应使螺母上的圆台向着连接件(如气缸盖),使该螺母端面与连接件贴合良好,从而增加摩擦力。
There may be some friends will say: What is the direction of the installation bolts? In fact, the installation of bolts, nuts are very particular about the direction. Here are five examples to illustrate. Example 1 Some stud bolts (such as stud bolts on the cylinder head of an engine) have one end threaded and the other end shorted. The installation should generally screw the shorter end of the screw into the body or cylinder head, the longer end of the threaded screw is used to install the fixing nut, if the anti-screw is installed, the screw may not be enough. Example 2 For a nut with a truncated cone (such as a cylinder head retaining nut of a S195 diesel engine), the trunnion on the nut should be installed so as to face the connecting piece (such as the cylinder head) so that the nut end surface fits well with the connecting piece to increase the friction force.