中文摘要：

针对现有板栗剥苞机在七八成熟板栗剥苞时存在脱尽率低、损伤率高而只能手工剥苞、效率低下的现状，设计了一种基于柔性揉搓原理剥苞和往复运动筛分的板栗剥苞机。详细阐述了剥苞机的柔性揉搓关键部件、双层往复筛分部件以及传动系统的设计。设计的揉搓橡胶板和揉搓臂的长度可调，对不同大小的板栗刺球剥苞适应性好。通过样机试验，证明了该机对七、八成熟板栗剥苞的适应性，其脱净率大于96％，分离清洁度大于98％，损伤率小于4％。

英文摘要：

The existing chestnut husker is not adapt to chestnuts just at the point of maturity, which is time-consuming and inefficient, and even seriously restricts the development of chestnut industry. In order to overcome the chestnut husker with the shortage of high damage rate and low removal rate which are commonly used in the market presently, a chestnut husker was designed which can not only rub and peel the chestnut flexibly, but also screen the chestnut with reciprocating motion. The design of the key parts, including the bidirectional screening device part and the transmission system, was described in detail. The upper end of the bidirectional screening device was considered as the chestnut fruit export which was higher than the other end. The lengths of both the rubbing rubber plate and the rubbing arm can be adjusted to fit the chestnut thorn ball with different sizes. We produced more than 20 prototypes. The results of prototype experiment proved that the machine can meet the requirements of actual production. The tests for the chestnut thorn balls which are closed to maturity were conducted and the results proved that the threshing rate was more than 96%, the separating rate was more than 98% , and the loss rate was less than 4%.