Assembling method and application of large shaft sleeve and bearing shell

The invention discloses an assembling method and application of a large shaft sleeve and a bearing shell, and the assembling method specifically comprises the following steps: step 1, confirming angular positions of a shaft sleeve end face hole and a bearing shell threaded hole, and marking the angular positions on the shaft sleeve and the bearing shell; secondly, a guide screw is fixedly connected with a threaded hole of the bearing shell; thirdly, the bearing shell and the shaft sleeve which are provided with the guide screws are subjected to ultrasonic cleaning; drying by using dry and clean compressed air; fourthly, the bearing shell subjected to ultrasonic cleaning is heated; freezing the shaft sleeve by liquid nitrogen; fifthly, the frozen shaft sleeve is installed in a cavity of the bearing shell through a guide screw according to the marked position; a compression screw is placed in an end face hole of the shaft sleeve, and the shaft sleeve and the bearing shell are rapidly compressed after cold and h