关键词: 柳条扦插机, 链板式出料装置, 受力分析, 链传动, L型推板

Abstract:  To solve the need for having a human operator to supply branches during the cutting and planting processes for willow branches, an automatic chain plate discharge device was designed. The process of discharging willow branch in order was analyzed, and an automatic chain plate discharge device was proposed for supplying willow branches which comprised of a silo, chain drive mechanism, and Lshape pushing plate. The operation principle was explained, the physical characteristics of willow branch were analyzed, the operation parameters were established, which were set as the factors to design the silo mechanical structure. The dimensional constraints characterizing willow branch and the silo discharge port and Lshape pushing plate were analyzed, the willow branch mechanical model during the pushing process was established, the force on Lshape pushing plate and chain mechanism was analyzed. A simulation analysis was made on bending stress for Lshape pushing plate root, which were set as the factors to design the Lshape pushing plate and chain mechanism. 100 willow branches were separated into 3 units as test objects, after which the experiment was carried out on the designed discharge test bench. The results indicated that the automatic discharge device achieved a working efficiency of 60 plants per minute, and the average success rate of discharging willow branch was 97%, which showed that the automatic discharge device could achieve the requirement for automatically discharging willow branches in order. Therefore, it can be seen that the device could be applied to the automatic and orderly feeding of other similar rodshaped materials in the automatic production line.

Key words: willow branch cutting machine, chain plate discharge device, force analysis, chain drive, Lshape pushing plate