The utility model relates to a device for release is salvaged in pit to wireless brill deviational survey instrument of following. Its technical scheme is: salvaging a release section of thick bamboo and being connected through the screw and the lower extreme of protection sleeve, screw and articulate are passed through to the upper end of protection sleeve, connect the upper end and are equipped with the cable junction head, the inner chamber of said protection sleeve is inclosed cavity, is equipped with the solenoid combination in the cavity, and the solenoid combination is laminated with the pressure claw of lower part through the tensile piece of pull rod connection, tensile piece, said pressure claw passes through pressure claw removable pin and salvages release fixed being in the same place, and the pressure claw will be done all can to transmit to give to grab and colluded, and then realize grabbing opening and closing of colluding the beneficial effects of the utility model are that: adopt lever principle, can transmit the power that electromagnetic mechanism produced and collude for grabbing, satisfy and wirelessly survey instrument and releasing mechanism release in the pit division along with boring