Built-in cable vibration reduction device

The invention discloses a built-in cable vibration reduction device which comprises dampers, base plates, hole covers, outer sleeves, a lug plate, a support sleeve, a hole edge boss, a fixture, a concave flange and an embedded pipe flange. The dampers are mounted in the outer sleeves, one end of each damper is in hinge pin connection with the corresponding hole cover by the corresponding base plate, and the other end of each damper is connected with the lug plate by hinge pins; the lug plate is connected with the fixture by means of welding; the hole covers are mounted on upper ports of the outer sleeves and are connected with the base plates by bolts; a mounting hole is formed in the radial surface of the support sleeve, and the hole edge boss is arranged on the mounting hole; the outer sleeves are mounted on the hole edge boss via bolts; the fixture is mounted in the support sleeve, and a cable is clamped by the fixture; the support sleeve is connected with the embedded pipe flange by the concave flange. Th