Design and Experiment of Hinge Lifting Device of Cyperus esculentus Combine Harvester

Aiming at the oil bean mechanized harvesting process of lifting and transporting vibration device to remove impurities is not obvious, resulting in the oil bean and soil impurities and other separation is not complete, the soil leakage rate is low, the rate of injury to the fruit is high, as well as the soil clogging and back to the belt in the process of lifting and transporting and so on, combined with the oil bean fruit soil seedling agglomerates, a hinge sieve sheet lifting device was designed through the sieve sheet bending part of the agglomerate to provide the same direction of movement with the chain sieve to increase the area of the screen holes and increase the effect of soil leakage and effectively avoid the phenomenon of back to the belt. Through the bending part of the sieve plate to provide the agglomerates with the same thrust as the chain sieve movement direction, the sieve area was increased, so that the hinge-type lifting device can increase the effect of soil leakage and effectively avoid the phenomenon of back to the belt. The inclination angle and fixed position were analyzed and designed, and the simulation test was carried out by EDEM. Taking the linear speed of the chain sieve, the bending height of the chain sieve plate, and the vibration frequency of the chain sieve as the test factors, and the soil leakage rate and the fruit injury rate of the oleaginous soybean agglomerates in the conveying process as the test indexes, the optimal structural parameter combinations of the conveying sieve were obtained through the analysis of three-factor and three-level orthogonal simulation test. The test results showed that the optimal combination of chain sieve line speed was 1. 151 m / s, bending height was 27. 779 mm, and vibration frequency was 9. 561 Hz, at this time, the soil leakage rate of the lifting device was 96. 524%, and the fruit injury rate was 2. 439% . The results of the field verification test showed that the average soil leakage rate of the hinge-type lifting device was 96. 05% and the average fruit injury rate was 2. 38% when taking the chain sieve linear speed of 1. 2 m / s, bending height of 28 mm, and vibration frequency of 9. 5 Hz, which was basically the same as the results of the simulation test, and it met the working requirements of the chain sieve for lifting and transporting the oil soybeans. © 2024 Chinese Society of Agricultural Machinery. All rights reserved.