| 摘要 |
An adjustable drilling bucket of a rotary drilling rig. The drilling bucket comprises a drilling bit (10), an adjusting plate (11) provided with a sliding groove, and a connecting rod (12) sliding on the adjusting plate (11) and having one end connected to the drilling bit (10). The other end of the connecting rod (12) is connected to a mast (13) of the rotary drilling rig. The drilling bit (10) is in a bullet shape; and a power-saving drilling tooth (102) is disposed on the side surface of the drilling bit (10). In the application, an operator can move the connecting rod on the sliding groove to adjust the diameter of a drilled hole; and due to the design of the bullet-shaped drilling bucket, it is easier for the bullet-shaped drilling bucket to perform drilling, compared with a plane drilling bit. The adjustable drilling bucket can adjust the diameter of the drilled hole according to actual requirements, so as to drill a hole with a proper size; the hole forming precision is high, the energy consumption is greatly saved, and the working efficiency of the drilling rig is improved. |
