论文部分内容阅读
小发明评点（五）敖子拔棉杆器江西省临川县河东中学初二范碧海（女，１４岁）我的这项发明是一种能减轻劳动强度的农具。其外形类似羊角钉锤，作用原理类似钉锤拔钉子的杠杆作用。它由叉口、弯头、加强筋、手柄及支点铁杆脚等构成，拔棉杆时，将羊角叉口插入棉杆根部，把...
Small inventions Comments (A) Ao pull cotton rod Linhe County, Jiangxi Province Hedong Middle School Fan Bihai sea (female, 14 years old) My invention is to reduce the labor intensity of farm tools. Its shape resembles a claw hammer, the role of the principle is similar to nail pulling the nail lever effect. The utility model is composed of a fork, an elbow, a reinforcing rib, a handle and a fulcrum iron rod foot, and when the cotton rod is pulled, the claw fork is inserted into the cotton root, and the ...