| 摘要 |
A rock drill having a head body, a sleeve fixed to the inside of the head body, a drilling tool attached with a bit to one end thereof and slidably and rotatably engaged with the sleeve, a main body connected to the head body, a hydraulically operated drill hammering means for imparting reciprocal movement to said tool, a drill rotating means for rotating the tool, and an air blast means for blasting air from the tool to remove the crushed rocks around the tool. Since hydraulic liquid can be utilized for operating the rock drill thus constructed, it may be easily adapted for use with bulldozers, construction vehicles, and the like. |
