Self-vibration attenuation cable and installation method thereof

Abstract

The invention discloses a self-vibration attenuation cable, which comprises a cable body and a Haver sheath arranged on the outer layer of the cable body, wherein an isolation layer is arranged between the cable body and the Haver sheath positioned on the outer layer of the cable body; the isolation layer comprises damping rubber, a viscoelastic body, slow condensation material or a mixed body of the above three materials; the isolation layer is directly distributed on the length of the whole cable or is distributed on the cable in the fixed point by a positioning groove arranged on the inner wall of the Haver sheath; a damping rubber block installed on the inner wall of the Haver sheath is in a semicircular structure; the back of the damping rubber block is provided with a boss; the boss and the positioning groove are in cooperative installation; and the outer surface of the Haver sheath is provided with a plurality of pits, is provided with a double-spiral rib or is simultaneously provided with a plurality of pits or wound with the double-spiral rib. The cable body and the Haver sheath self-vibration attenuation cable on the outer layer of the self-vibration attenuation cable have the advantages of good durability and vibration attenuation function, the influence on resisting rain-wind induced vibration by the cable can be improved, and the anti-fatigue service life of the cable body is prolonged. The manufacture method of the self-vibration attenuation cable is simple and convenient.

Description

technical field [0001] The invention relates to a bridge cable, in particular to a self-damping cable with a Harvard sheath on the outer layer and an installation method thereof. Background technique [0002] The Haval sheath is composed of two or three lobes of plastic profiles interlocked. It belongs to a kind of sheath used to protect cables. It is widely used in bridge cable systems, external cable systems, suspenders, and tie rod systems. Cable outer layer protection and old cable reinforcement; the existing Haval sheath (patent number: ZL00266560.3) and cable sheath (patent number: ZL97217686.1) have smooth surfaces, and their resistance to the impact of wind and rain is poor : In addition, after the installation of the cable body with Haval sheath, there is a gap between the inner diameter of the sheath and the cable body, and the outer surface of the sheath has no measures to resist wind and rain vibration, under the action of wind and rain, the inner wall of the she...

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Problems solved by technology

[0002] The Haval sheath is composed of two or three lobes of plastic profiles interlocked. It belongs to a kind of sheath used to protect cables. It is widely used in bridge cable systems, external cable systems, suspenders, and tie rod systems. Cable outer layer protection and old cable reinforcement; the existing Haval sheath (patent number: ZL00266560.3) and cable sheath (patent number: ZL97217686.1) have smooth surfaces, and their resistance to the impact of wind and rain is poor : In addition, after the installation of the cable body with Haval sheath, there is a gap between the inner diameter of the sheath and the cable body, and the outer surface of the sheath has no measures to resist wind and rain vibration, under the action of wind and rain, the inner wall of the sheath Collision with the cable body will easily cause more serious vibration to the cable, and at the same time have an adverse effect on the stability of its own structure

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