Drill rod adopting pangolin scale biomimetic structure
A technology of pangolin scales and drill pipes is applied in the field of drill pipes with bionic structures of pangolin scales, which can solve the problems of increasing the risk of coal mine accidents, increasing friction, and easy collapse of drilled holes, so as to prevent the phenomenon of drill pipe locking and easy withdrawal. Effect
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[0021] The present invention will be further described below in conjunction with the drawings and specific embodiments.
[0022] please see figure 1 , figure 2 , image 3 , the technical solution adopted in the present invention is: a drill rod with a pangolin scale bionic structure, comprising a rod body and 30 hollow frustum-shaped units, the inner holes of the hollow frustum-shaped units are cylindrical inner holes, and the longitudinal intervals are distributed on the outer circumferential surface The ridges and grooves, and the heads and tails of the hollow frustum-shaped units are inlaid together and then tightly sleeved on the rod body and fixed with glue.
[0023] The hollow frustum-shaped unit is injection molded from polyurethane elastomer. The angle between the outer peripheral surface of the hollow frustum-shaped unit and its inner peripheral surface is 10°. Ridges and grooves are longitudinally distributed on the outer peripheral surface of the hollow frustum-s...
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