The expansion sleeve is composed of two halves, which are connected with the driving shaft and the driven shaft respectively. Generally, the power machine is mostly connected with the working machine by means of the expansion sleeve. The changing conditions can be divided into fixed expansion sleeves, which are mainly used in places where the two shafts need to be strictly aligned and do not produce relative displacement during operation.

The layout is generally simple, the manufacturing is simple, and the instantaneous speed of the two shafts is the same. There are mainly flange expansion sleeves, sleeve expansion sleeves, jacket expansion sleeves, etc. The movable expansion sleeves are mainly used for two shafts with deflection or Where there is relative displacement in the operation, it can be divided into rigid removable expansion sleeves and elastic removable expansion sleeves according to the method of compensation for displacement. The dynamic connection has the degree of activity in one direction or several directions to compensate, such as tooth indent expansion sleeves, cross groove expansion sleeves, universal expansion sleeves, gear expansion sleeves, chain expansion sleeves, etc., elastic removable expansion sleeves The elastic deformation of the elastic element is used to compensate the deflection and displacement of the two axes, and the elastic element also has the functions of buffering and vibration reduction.

Such as serpentine spring expansion sleeve radial multi-layer plate spring expansion sleeve elastic ring bolt pin expansion sleeve nylon bolt pin expansion sleeve rubber sleeve expansion sleeve, etc. Some expansion sleeves have been standardized, and universal expansion sleeves are selected At this time, the appropriate type should be selected according to the work requirements, and then the torque and speed should be calculated according to the diameter of the shaft, and then the applicable type should be found from the relevant manuals, and finally some key parts should be checked.