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在目前广泛使用的KAM-500型钻机及KA-2M-300型钻机都为卡盘卡瓦顶紧钻杆而回转。但在实际工作中,一般卡瓦损坏较快。为了更换新瓦,必须将立轴箱拆下,再把卡盘与卡盘帽之间卸开拿出旧瓦后,再更换按装。由于钻机回转时,卡盘都拧得很紧,因此拆卸卡盘非常困难而耽误时间,同时经常的折卸,也是卡盘及卡盘帽损坏的主要原因之一。根据上述情况,我们将卡盘进行了改进(如图):即把卡盘的另一端孔径增大至两块卡瓦对合能放入为止.并车以丝扣,上一备帽,这样更换卡瓦时,只要卸下
KAM-500 drilling rigs and KA-2M-300 drilling rigs widely used at present are all used for rotating chuck rods. However, in actual work, the general slips damage faster. In order to replace the new tile, you must remove the vertical axis box, and then unload the chuck and chuck cap to take out the old tile, and then replace the press. Since the chuck is screwed tightly during the rotation of the drilling rig, it is very difficult and time-consuming to remove the chuck, and frequent disassembly is also one of the main reasons for the damage of the chuck and the chuck cap. According to the above situation, we will improve the chuck (pictured): the other end of the chuck aperture increases to two slips can be put together so far. And the car with threaded buckle, a spare cap, so When changing slip, just remove it