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access icon openaccess Improved design and parameter optimisation of the transmission mechanism of a tobacco stalk pull-out crusher

This is an open access article published by the IET under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0/)
Received 01/10/2018, Accepted 12/10/2018, Published 19/10/2018

In order to eliminate the plug stem phenomenon and reduce the transmission power consumption of the self-developed integrated tobacco stalk pull-out crusher transmission mechanism when the culms are pulled out at high speed in the field, based on the analysis of the reasons of plug stem, a new rubber-type roller pair transmission mechanism with easy disassembly and adjustable spacing was designed. Through the force analysis, the mathematical model of the force, deformation and transmission power of the tobacco stalk during the extrusion and transportation phase was obtained, and the test platform of the tobacco stalk pull-out crusher transmission mechanism was built to carry out the orthogonal rotation combination test. The test results show that the optimal working parameter combination within the range of test factors is: the roller speed is 530 r/min, the II pair of roller spacing is 90 mm, the III pair of roller spacing is 30 mm, and the tobacco stalk feeding rate is 1.5 s/n. At this time, the plugging rate of stem is 2.22%, the transmission power consumption is 645 W, and the actual average leak stalk rate obtained by repeating 10 tests under this parameter is 3.33%, and the actual transmission power consumption is 684 W, the actual plugging rate of stem and transmission power are basically consistent with the optimized values, indicating that the improved design structure is reasonable, and the established regression model is basically reliable.

Inspec keywords: design of experiments; tobacco industry; power consumption; optimisation; mathematical analysis; rubber; agricultural machinery; regression analysis; rollers (machinery); design engineering; extrusion

Other keywords: tobacco stalk pull-out; self-developed integrated tobacco stalk; adjustable spacing; roll speed; roller spacing; actual plugging rate; improved design structure; optimal parameter combination; rubber-type roller pair transmission mechanism; tobacco feed rate; operation parameter optimisation; actual average leak stalk rate; distance 90.0 mm; plug stem phenomenon; actual transmission power consumption; distance 30.0 mm; roll spacing; secondary orders; test factors; optimal working parameter combination; orthogonal rotation combination test; roller speed; crusher transmission mechanism; structural improvement design; tobacco stalk feeding rate; power 645.0 W; primary orders

Subjects: Mathematical analysis; Production equipment; Statistics; Optimisation; Agriculture

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http://iet.metastore.ingenta.com/content/journals/10.1049/joe.2018.8983
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