Vibration Test and Analysis of the All-in-one Machine of Combine Harvester and Baler

Zhu Leihua;Li Yaoming;Tang Zhong;Xu Lizhang;Key Laboratory of Modern Agricultural Equipment and Technology,Ministry of Education and Jiangsu Province,Jiangsu University;

baler all-in-one machine;;harvester combine;;vibration;;test;;frequency

In order to improve the driving comfort of all-in-one machine of combine harvester and baler,in view of the vibration and the problem of driver comfort of the domestic all-in-one machine of combine harvester and baler,4L-4.0 type all-in-one machine of combine harvester and balers the research object by Jiangsu University and Nantong cotton machinery Co. Ltd. in the engine no-load,no-load machine and field harvest under 5 different conditions,testing and analyzing the 8 measuring points by using DH5902 dynamic signal analysis system,getting the time domain and frequency domain characteristics of corresponding measured point. From the test results can be seen: the engine up and down vibration,vibration sieve before and after movement,compression device before and after movement and the horizontal movement of the cutter is the main vibration source of the all-in-one machine of combine harvester and baler;and the delivery tank,fan,straw feeding fork and threshing cylinder in the rotary motion of unbalanced force is the secondary cause of the vibration. The whole machine is under full throttle no-load condition,the vibration frequency caused by the dragon,cylinder,fan,vibration sieve,straw feeding fork,compression device are respectively 76. 6Hz,7.63 Hz,3. 16 Hz,18. 62 Hz,20. 67 Hz,6. 52 Hz,2. 63 Hz and 5. 41 Hz,this paper provides the design basis for the vibration reducing of the all-in-one machine of combine harvester and baler.