| 摘要 |
The pressurized ejection device (4) is operationally coupled to a motor (3) and to the free end (8) of the anchor tube (5) of the chemical bonding anchor (2). A drilling head (7) for drilling into a substrate when driven by the motor is provided at one end (6) of the anchor tube which comprises a receiver for receiving composition to be ejected under pressure and an ejection piston. An independent claim is also included for an arrangement for placement of self-drilling, chemical bonding anchor in mining and tunnel construction. |
