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橡塑技术与装备
HINA R&P TECHNOLOGY AND EQUIPMENT

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[10] 李优华，李权才，刘忠明 . 低速重载齿轮箱传动效率分析与测

Efficiency calculation of gearbox for twin-screw extruder

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Zhang Jun , Wu Mingjun , Ji Yao , Bi Chao , He Zhicong 2
2
(1. Nanjing High Precision Gear Group Co. LTD., Nanjing 211103, Jiangsu, China;
2. Beijing University of Chemical Technology, Beijing 100029, China)
Abstract: In order to improve the transmission efficiency of the gearbox and reduce power loss,
a simulation calculation method for the transmission efficiency of the gearbox is proposed. Establish a
transmission model for the gearbox system based on KISSsys, calculate the losses of gears, bearings, shaft
seals, etc., and apply it to the transmission efficiency analysis of the twin-screw extruder gearbox. Obtain the
efficiency value of the gearbox through loading experiments and compare it with the results of theoretical
simulation calculations. The results show that the maximum deviation between simulation calculation and
experimental results is 0.28%, and the proposed simulation calculation method can predict the efficiency of
the gearbox of the twin-screw extruder well; The influence of gear pressure angle and lubricating oil type on
transmission efficiency was analyzed. The KISSSsys analysis results showed that increasing the gear pressure
angle from 20 ° to 25 ° reduced the load loss of the gear by 22.26% and increased the transmission efficiency
by 0.24%; By using polyethylene glycol synthetic lubricating oil, the average gear load loss was reduced by
28.83%, the average bearing loss was reduced by 19.68%, and the transmission efficiency was improved by an
average of 0.59%.
Key words: twin-screw extruder; KISSsys; gear wear; bearing loss; efficiency
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