Novel wrench

The utility model relates to a novel wrench, including the rotary rod, a handle, pipe box A, pipe box B, the spliced pole, sheave A, the fixed block, fastening bolt A, fastening bolt B, U -shaped backup pad and chain, the rotary rod lower extreme sets up the handle, the rotary rod upper end sets up pipe box A, welding pipe box B on the pipe box A lateral wall, welded connection post on the pipe box B lateral wall, the rotatory sheave A that sets up in spliced pole upper end, slide and set up the fixed block in the rotary rod lower part, and set up fastening bolt A on the fixed block, the rotary rod middle part is the rotatory fastening bolt B that sets up still, fastening bolt B one end is passed the rotary rod after -fixing and is set up the U -shaped backup pad, chain one end and pipe box A upper end are articulated, pass sheave A behind the chain other end winding nut lateral wall in proper order, pipe box B, be connected with the fixed block after the U -shaped backup pad. The beneficial effect of the uti