Big moment of torsion screwdriver

The utility model provides a big moment of torsion screwdriver for solve the problem that application of force pole is lost easily. A big moment of torsion screwdriver, includes the handle and is usedfor the wrong cutter arbor that moves the screw, still includes first stay cord, second stay cord, link, extension spring, first fixed pulley, second fixed pulley, first application of force pole andsecond application of force pole, be equipped with the inner chamber on the handle, inner chamber upper end opening, first fixed pulley and second fixed pulley rotate the connection respectively andare in the open position department of the upper end of inner chamber, extension spring's lower extreme is connected the lower extreme of inner chamber, the link is connected extension spring's upperend. The beneficial effects are that, can avoid first application of force pole and second application of force pole to lose. 种大扭矩螺丝刀，用于解决施力杆容易丢失的问题。种大扭矩螺丝刀，包括手柄和用于拧动螺钉的刀杆，还包括第拉绳、第二拉绳、连接架、拉伸弹簧、第定滑轮、第二定滑轮、第施力杆和第二施力杆，所述手柄上设有内腔，所述内