“Tractodri11”是西德保乐·施密特(Paul·Schmidt)公司制造的一种拔钎机。它工作起来象一台凿岩机,但方向相反。这种机器利用压缩空气,以合理的方式松动钎杆并拔出。钎杆的钎尾由侧面放入拔钎机的导入口,通过一只自行伸缩的楔块将钎杆固定在拔钎机内,并由一只高强度的弹簧承受反冲力。“Tractodrill”除了在地平面工作外,也可在各个方向和任意高度进行拉拔作业。它适用于各种型号的钎杆。标准设备与7/8×4~1/4英寸的六角形钎尾相配合。对于较短 “Tractodri11” is a draw-off machine made by Paul Schmidt. It works like a rock drill, but in the opposite direction. This machine uses compressed air to loosen the drill rod and pull it out in a reasonable way. The shank of the shank is put into the introduction port of the drawer through the side, the shank is fixed in the drawbench by a self-expanding wedge, and the recoil force is received by a high-strength spring. In addition to working in the ground plane, “Tractodrill” can pull jobs in all directions and at any height. It is suitable for various types of drill rod. Standard equipment and 7/8 × 4 ~ 1/4 inch hexagonal shank fit. For shorter