Telescopic well sinker

The utility model relates to a telescopic well sinker. The utility model discloses more the tube replacement way is consuming time, dangerous in aiming at solving prior art, and the complete machine is difficult to the problem of transportation. (1)The utility model comprises a base (1), the fixed bolster of installation on lifting support, drilling cramp and the base, lifting support and fixed bolster sliding connection, the last drilling cramp of installing of lifting support, top -down installs well drilling motor, well drilling motor reducer and tap in proper order on the drilling cramp, be equipped with the slide rail on the fixed bolster, the well sinker is still including driving the power unit that drilling cramp and/or lifting support removed along the slide rail. The utility model has the advantages of the base divides for fixed portion and slipper, and the length of its drilling rod that can drive is longer, has also improved well drilling efficiency, realized the quick detach of drilling cramp, the transition of being convenient for is carried, also is convenient for shorten maintenance duration, make the well drilling for the change of pipeline can utilize to automize and accomplish.