(B, ) the utility model relates to a split pin remounting instrument technical field is a split pin remounting specialized tool, and it includes insulating bar, steering joint, extension rod and clamping device, steering joint's lower extreme is fixed in insulating bar's upper end, and steering joint's upper end is together articulated with the one end of extension rod, clamping device includes bottom plate, guide boss and location axle, the other end at the extension rod is fixed to the bottom plate, is equipped with on the bottom plate to be the ring -type and to have open -ended guide boss, is fixed with the location axle on the inside bottom plate of guide boss. The utility model has the advantages of reasonable and compact structure, convenient to use, it through the regulation of the arbitrary angle of steering joint realization, can realize on the shaft tower through the handheld insulating bar of people that the remounting of R type split pin works and guarantees the personal safety of operation personnel through reliably fixed R type split pin of clamping device, has reduced the drain on manpower and material resources, has increased work efficiency, has avoided the economic loss who has a power failure and bring. (B, )