| 摘要 |
PURPOSE: A fastening structure for a vertical protection net is provided to prevent accidents due to crash between rotary blades of a drill and a reinforcing rod. CONSTITUTION: A fastening structure for a vertical protection net comprises a clamp(200) and a protection net(400). The clamp is comprised of a support angle and a fixture(240). The support angle is comprised of a body plate and a pair of fixed plates(226) to be inserted into inner and outer walls of an opening. The fixture passes through one fixed plate and moves forward and backward according to a rotation direction. The protection net comprises a connecting strap(420) and is vertically installed on the front side and the rear side of the opening. The connection rope is fixed and coupled with a fastening hole(228) of the clamp.
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