Abstract: Aiming at the collision and displacement caused by the strong vibration in the dehydration stage of drum washing machine, applies the LMS vibration test system to vibration tests on the cylinder of a certain drum washing machine. The analysis on the test data proves the reason is the design of the glass bowl is unreasonable, and increasing the taper of the glass bowl is put forward as an optimized scheme. By increasing the taper of the glass bowl, the movement space of the roller during dehydration can be enlarged from 24 mm to 35 mm horizontally and vertically and the roller won't collide with the glass bowl, so as to effectively alleviate the collision and displacement of drum washing machine during dehydration.

Key words: Drum washing machine, Collision, Displacement, Glass bowl