ROCKBOLT HAVING TAPER TYPE INSERT PART

摘要

The present invention relates to a rock bolt having a taper type insert part. The rock bolt comprises: a hollow type body which forms a hollow therein to allow fluid to be flowed in through an end which is an inlet side for the fluid, forms a concave hole part of which is pressed in a concaved shape along a circumference direction and the part pressed by the fluid introduced to the hollow is spread within a perforated hole; a cap for the end which is fixedly combined with the end of the hollow type body to connect an injecting part which injects the fluid; a rear end junction part which allows the rear end of the hollow type body to be bonded and closed to prevent an outflow of the fluid introduced in the hollow of the hollow type body through the injecting part to the outside of the hollow type body; and a taper type insertion part formed in a method such that a radius is gradually reduced towards the rear end along a longitudinal direction of the hollow type body, and is disposed on the rear end of the hollow type body to allow the hollow type body to easily be pulled in and extracted from the perforated hole. The hollow type body can easily be pulled in and extracted from the perforated hole to which a rock bolt is installed, and the rear end of hollow type body is directly closed by welding; thereby reducing time and costs required to manufacture a rock bolt.