| 摘要 |
<p>A coupling device of a pipe according to an embodiment of the present invention comprises a pressure pipe of cylinder shape; a first coupling ring; a second coupling ring; and multiple coupling pins. The pressure pipe combined to a first pipe by covering the outer circumference of the first pipe has pressure blades at both ends of the axial direction, each of which is formed to protrude toward the hollow inside. The first coupling ring combined to the pressure pipe by covering the outer circumference has first holding units formed to protrude from both ends of the circumference direction. The second coupling ring is combined to a second pipe with an extension unit at the end of the axial direction by covering the outer circumference in order to combine to the first pipe, and has second holding units formed to protrude respectively while positioning at both ends of the circumference direction in order to be in the same line with the first holding units. Each of the multiple coupling pins is connected to the first holding units and the second holding units to connect the first coupling ring and the second coupling ring.</p> |
