Structure Design And Analysis On Toss Feeding Stalk Baler

With the increasing consumption of fossil energy, the utilization and development of biomass energy is concerned by more countries. As an important part of biomass energy, biomass straw is a kind of clean and recyclable energy resource with advantages of flammability and zero emission of carbon dioxide. However, there are some bottlenecks in the large-scale use of straw, such as the widely distributed scope, the strong seasonality in harvest and high cost in transportation. To process corn stalks into bundles on the fields by baler is an effective solution to this problem. The bale has the advantages of easy processing, convenient storage and transportation.On the present studies in baler, this thesis proposed a design program about straw bale machine of toss feeding type. This baler is mainly composed of transmission, collecting mechanism, feeding mechanism, compression system and knotting device. The power transmission is achieved in a mix transmission system composed of belt drive, gear drive and chain drive, both can ensure the kinematic accuracy of the compression system and knotting device and plays good role in vibration absorption and overload protection. A Y-shaped straw chopper blade is adopted in the collecting mechanism and the structure parameters are determined through theoretical analysis and experimental data, at the same time, we determined its arrangement in the flail shaft base on the assumptions of equilibrium stress and isolates. The constitutes and principle of the feeding system are analyzed, and the structure of the toss machine and feeding box are also designed in this thesis. Building the 3-D models of the machine by Pro/E 5.0 software. Main parts or components were made finite element stress analysis and strength test by ANSYS Workbench 13.0, such as Y-shaped straw chopper blade. And depending on the CFD software(Fluent)the flow field of the feeding mechanism is simulated, and the optimal speed of toss machine is determined.Based on the analysis of the existing balers, by innovative designing the mechanism of collecting and feeding for the toss feeding stalk baler, and the analysis of Y-shaped straw chopper blade and the flow field, the efficiency was improved and operating costs were decreased. After the toss feeding stalk baler are constructed and commissioned, the cost in harvest and use of straw are effectively reduced and it will push for large-scale large-scale of stalk biomass.