自从我院第一地质队使用双轮电动震动器在土层中进行震动钻进以后,不但改变了原来的繁重体力劳动,而且使钻进速度提高很快,每分钟钻进达5公尺左右。这样就使钻桿的增接工作赶不上需要,影响了钻进效率。于是我们就试制了一种挂钩式的钻桿接手,来代替过去用丝扣连接的接手,从而減少了扭接时间,满足了钻进需要。 After the first geologic team in our hospital used the double-wheel electric vibrator to vibrate and drill in the soil, it not only changed the original heavy manual labor, but also increased the drilling speed very quickly, drilling about 5 meters per minute . In this way, the work of adding the drill pipe can not keep up with the need, affecting the drilling efficiency. So we tried a hook-type drill take over to replace the past with a threaded connection to take over, thus reducing the twist time to meet the drilling needs.