Password split collet

The utility model relates to a password split collet, including first clamping piece, second clamping piece, first connecting portion, second connecting portion with apart from adjustment Assembly, the second connecting portion are equipped with the cavity, the second connecting portion are equipped with a through -hole that communicates with the cavity, first connecting portion are inserted and are put in the cavity, distance adjustment device is including setting up latch, gear and the pivot on first connecting portion, the through -hole is passed in the pivot, and the gear is caught in the cavity parallel connection to the one of which end position, and the other end exposes outside, the gear is connected with the latch cooperation, still including the dead part of the lock that restricts gear unidirectional rotating, the part setting is died in the cavity of second connecting portion to the lock. The utility model discloses a first clamping piece and second clamping piece block article to interval by adju