国外铧式犁的安全装置

• 作 者: 自华
• 出 处: 农业机械资料
• 发表日期: 1974年04期
• 关键词: 铧式犁 障碍物 弹簧式 摩擦式 犁体 弹簧 石块 杠杆式 马力 行车速度

在铧式犁上设置安全装置,可以避免犁在耕作中碰到障碍物引起损坏。这对地下埋藏有石块、树根和其它隐蔽障碍物(如北方早春耕地时尚有未融化的冰冻的土块等)的地方是特别重要的。国外在铧式犁上设置安全装置,已有较长的历史。不过,早期的安全装置都是比较简单的摩擦式、剪切销式等。后来逐渐发展为直拉弹簧式(图1)或弹簧杠杆式(图2)。近年来,由于拖拉机马力日益增大,耕地时的行车速度日益

Safety devices are installed on the plow to prevent the plow from hitting obstacles during plowing. This is especially important where there are stones, roots and other hidden obstacles buried in the ground (such as unmilled, frozen clods in the early spring in the north). Foreign countries in the plow to set the safety device, has a long history. However, the early safety devices were relatively simple friction, shear pin type. Later developed into a straight-pull spring type (Figure 1) or spring lever type (Figure 2). In recent years, due to the growing horsepower of tractors, the driving speed of cultivated land is increasing day by day