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Position: Home > Articles > A discussion on the critical speed of the upright cylinder helix ditching machine of the variable pitch Journal of Agricultural Mechanization Research 2005 (1) 129-130+133

立轴柱形变螺距螺旋开沟机临界转速分析

作  者:
李平;蒋恩臣;丁乔
单  位:
塔里木农垦大学;东北农业大学
关键词:
农业工程;螺旋开沟机;分析;圆柱;变螺距;临界转速
摘  要:
通过对螺旋开沟机所输土块的运动及受力情况进行分析可知:当土块与坑壁之间的摩擦力能阻止土块随叶片旋转时,土块在螺旋叶片上所受作用力相互平衡。由此,推导出立轴柱形变螺距螺旋开沟机的临界转速。此即为保证土壤在螺旋而上上升的基本条件,而实际转速则大于临界转速。该分析为进一步设计立轴柱形变螺距螺旋开沟机提供了依据。
译  名:
A discussion on the critical speed of the upright cylinder helix ditching machine of the variable pitch
作  者:
LI Ping, JIANG En-chen, DING Qiao (The Talimu Agricultural University, Alar 843300, China; The Northeast Agricultural University, Harbin 150030,China)
关键词:
agricultural engineering; helix ditching machine; analysis; cylinder; variable pitch; critical speed
摘  要:
By analyzing of the motion and received-forces conditions of a soil unit body on the spiral of the helix ditching machine during soil lifting, When the friction between the soil and the side of hole can stop the rotation of a soil unit body together with helix blade, The receive-forces of the soil is balance each other. Thus, Calculating the critical rotational speed of the helix ditching machine. It is a basic condition that can guaranteed the soil moving upward on the helix surface. The actual rotational speed is bigger than it. The analyzing supplies a foundation for the further design.

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