Optimization of Clamping and Conveying Device for Sunflower Oil Combine Harvester Header

Abstract

To solve the problem of grain spatter during harvest by combine harvester headers, a new clamping and conveying device of the sunflower oil harvester header was designed. We investigated plant states during the conveying process. To optimize the parameters of the sunflower oil harvester header, a test bench was built to simulate sunflower plant harvest. The influence of the clamping gap, clamping speed ratio, and clamping length on conveying success rate was explored by a single-factor experiment. Based on this experiment, the secondary regression orthogonal rotation test was carried out. The optimal structural parameter combination was obtained as follows: the clamping gap was 20 mm, the clamping speed ratio was 1.3, and the clamping length was 345 mm. Under this combination parameter condition, the corresponding conveying success rate reached up to 85.16% and the minimum value of conveying grain loss rate was 1.57%. To verify the effect of parameter optimization, a verification test and a comparison test were performed. Results showed that the actual conveying success rate was 83.50% and the actual grain loss rate was 1.49%, which were close to the optimized parameter value. The comparison test showed that the conveying success rate of the flexible clamping and conveying device was 83.50% with a grain loss rate of 1.49%, and that of the rigid clamping and conveying device was 55% with a grain loss rate of 5.17%. This study provides a theoretical basis for the design of a low-loss sunflower oil combine harvester header.

Experimental Study on the Cutting Characteristics of King Grass Stalk under Different Physical Properties and Mechanical Parameters

“…The final optimal value for OCA was 16.9 °. Existing research on different crops [10,26] shows that the value range of OCA is 7 °-20 °. The value of OCA in this study is also within this range.…”

“…The cutting process of stalks is closely related to their biological characteristics, physical properties, and cutting component structure, directly affecting their cutting mechanical properties [4]. Scholars have studied the cutting characteristics of stalks in crops such as corn [5][6][7][8], sunflowers [9,10], cotton [11], rice [12], and citrus [13]. The main research focuses on experimental factors such as moisture content, stalk cutting position, and cutting angle to determine the optimal cutting form, thereby reducing cutting energy consumption and cutting stress [14].…”

Optimization Design of a Pneumatic Wheat-Shooting Device Based on Numerical Simulation and Field Test in Rice–Wheat Rotation Areas

“…The response-surface optimization experiment of the three factors and three levels, based on the single-factor test results [22], was conducted by Box-Behnken central composite design [23][24][25]. The influence of the working pressure X 1 , the acceleration tube diameter X 2 and the throat distance X 3 on SAV Y 1 and SAL (length of the region with steady airflow velocity) Y 2 were analyzed under the different parameter combinations.…”

Design and Experiment of Plate Taking Control System of Edible Sunflower (Edulis helianthus catino L.) Harvester

“…At present, the research on the harvesting of sunflower is still in its infancy in China. Researchers have used the principle of wheat and corn harvesting to develop a mechanical device for the harvesting of sunflower [17]. Zhang Shuangxia et al [18] designed a sunflower harvesting header, which removed the sunflower plate from the sunflower rod by the reel.…”