针对一般公、母锥打捞工具不能打捞井下能自由转动的落物的缺点，设计、制造了一种既能适用于井下不能自由转动的大落物，也能适用于井下能自由转动的短小落物的滑动牙打捞器。它的制作简单、坚固耐用，现场使用时只要具备卷扬机或吊车，都可完成打捞作业。 Aiming at the defect that the common male and female cone fishing tools can not salvage the freely rotating downhole in the underground, a large drop that can not be freely rotated downhole can be designed and manufactured, and also can be applied to a short drop that can rotate freely downhole Slide teeth salvage. Its production is simple, durable, on-site use as long as winches or cranes, can be completed fishing operations.