ASABE Technical Library - Abstract

Abstract. D-knotter is widely used in the production of quadrate bale type of baller. However, it is very difficult to manufacture the D-knotter. So, a type of anthropopathic dual-finger knotter based on the principle of D-knotter was developed to decrease the diffculty of D-knotter production. The spatial angle of five axis holes on knotter stand was optimized to be easy to manufacture as well as key parameters of compound drived gear plate and actuating mechanisms. To test the performances of the developed anthropopathic dual-finger knotters, the model machine of the knotter was manufactured. Knotting experiments without bundling-straw and with bundling-straw were operated by straw forming and knotting test-bed. The tests showed that the knot-tied rate of forming normal φ shape of knots may reach 99 percent after each knotter finishes 1000 empty knots and 1000 bundles of rice straws. The field test showed that the knot-tied rate reaches 99.2 percent after the developed knotters bundled up 2200 bundles of wheat straws and 3000 bundles of rice straws. The knotter tests validate that the design of the knotter is successful and may provide some technical references for the knotter production.