Tool for quickly taking out copper bush of diesel injector

The utility model discloses a tool for quickly taking out a copper bush of a diesel injector. The tool comprises an inserted bar matched with the bush through insertion, wherein a holding part is arranged at the outer end of the inserted bar; a coaxially arranged inserted pipe is fixedly connected at the inner end of the inserted bar; a raised part is arranged on the outer wall of the inserted pipe; a bolt is connected in the inserted pipe; the rear periphery of the bolt is a cone with the smaller end connected with the thread segment of the bolt; an interval groove running through the inserted pipe is arranged at the outer end of the inserted pipe; a pull ring is fixedly arranged at the outer end of the holding part; the raised part is an annular frustum; the inserted bar comprises an upper inserted bar and a lower inserted bar, which are coaxially arranged; the lower end of the upper inserted bar and the upper end of the lower inserted bar are provided with outer threads with opposite directions of rotation; the upper inserted bar and the lower inserted bar are connected together by an adjusting nut; the tool also comprises a crow bar matched with the pull ring through insertion; and the crow bar comprises a lever and a supporting block fixedly arranged on the lever. The tool has strong holding force toward the copper bush and high taking-out success rate, is convenient to operate, does not damage the cylinder cover and is beneficial to improving the work efficiency.