Drilling tool anti -abrasion sleeve

The utility model relates to an anti -abrasion sleeve's technical field, a drilling tool anti -abrasion sleeve, the sheath comprises a sheath tube, upper fixed ring, lower fixing ring, telescopic upper end is fixed in upper fixed ring, telescopic lower extreme is fixed in lower fixing ring, it has a plurality of anti -abrasion strip to distribute on the telescopic lateral wall, the sleeve is the two lamellas form of alternate segregation, it is including the left side cover body, the right side cover body, upper fixed ring is formed by two detachable arc card interconnect, lower fixing ring isalso formed by two detachable arc card interconnect. The utility model has the advantages of reasonable and compact structure, through setting up the anti -abrasion strip on the sleeve, contact the directness between original sleeve pipe and drilling rod firmly, has become the drilling rod and has carried out indirect soft contact through anti -abrasion strip and cover inside pipe wall, greatly reduced the drilling rod w