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一种简易碎土筛土机的设计
王丽伟,蒋德云,孔晓玲,陈林
0
(安徽农业大学工学院,合肥 230036)
摘要:
介绍了一种简易碎土筛土机的设计与改进。基于CATIA对该机进行了三维实体建模,研制了样机,并针对样机试验中出现的土块回弹、土块堆积以及碎土率不高等问题进行了研究。对加料斗结构设计的改进,解决了土块回弹现象。加料斗下端与筛筒实现了平滑连接,从而使土块顺利进入破碎室。刀轴前端增加了螺旋推进刀片,在碎土的同时起到了螺旋推进的作用。通过对加料斗以及刀片的改进明显改善了土块回弹和堆积现象,提高了碎土率。利用ANSYS软件对刀轴进行了有限元分析,用以确定刀轴的结构设计与选材满足工作强度需求。
关键词:  碎土  筛土  CATIA  ANSYS
DOI:
投稿时间:2012-08-22
基金项目:安徽省国际合作项目(12030603008)资助。
Design and improvement of a simple type of clod pulverizer
WANG Li-wei,JIANG De-yun,KONG Xiao-ling,CHEN Lin
(School of Engineering, Anhui Agricultural University, Hefei 230036)
Abstract:
In this paper, we introduced the design and improvement of one simple clod-crushers and clod-riddlers. An three-dimensional solid model was established based on CATIA(computer aided tri-dimensional interface application), and an improvement was made on clod rebound, clod accumulation and low crushing rate based on the prototype during the experiment. The structural design of the feed inlet was modified to solve the clod rebound considerably and manufacturing-safety issue. The improved connection between the rock-bottom of the feed inlet and the sieve tube is smooth so that the clods can successfully reach the crush room. The propeller blade added in front of the blade shaft plays a great role of spiral advance while crushing clods. The improvement of the blade and feed inlet can increase the pulverizing rate. The blade shaft was analyzed with finite element based on ANSYS software so as to determine that the structure design and material selection could meet the intensity of the work request.
Key words:  clod-crusher  clod-riddler  CATIA  ANSYS

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