| 摘要 |
The present invention relates to a drilling hammer striking an underground bedrock to be crushed. More specifically, the drilling hammer comprises an air tube, a piston, and a bit. The piston comprises: an upper chamber moving pipe supplying compressed air supplied to the air tube to an upper chamber positioned in an upper portion of the piston; and a lower chamber moving pipe supplying the compressed air to the lower chamber positioned in a lower portion of the piston. The upper chamber moving pipe and the lower chamber moving pipe are independently formed and alternately supply the compressed air from the air tube to the upper chamber and the lower chamber in order to enable the piston to be repetitively ascended and descended. Therefore, the drilling hammer improves efficiency of the compressed air even if the same compressed air is used in the existing drilling hammer, reduces a loss of the compressed air to generate high striking energy, and has excellent efficiency of the hammer. |
