Directly-buried composite cable

Abstract

The invention discloses a directly-buried composite cable, which comprises an outer cover layer. The outer cover layer has an installation chamber in which an inner core wire is installed. A rotatinglayer is arranged on the inner wall of the installation chamber. The outer wall of the rotating layer is set close to the inner wall of the installation chamber. More than one slideway slot is arranged equidistantly in the symmetry plane of the installation chamber along the length direction of the outer cover layer, and a spring is installed in each slideway slot. The cable of the invention has very high compression and shear resistance. When the maximum downward pressure is achieved, the inner rotating layer rotates, the positioning shaft inside the rotating layer serves as a support for vertical downward pressing, and the inner core wire is shifted by the downward pressure so that the inner core wire is discharged to the outside of the outer cover layer and avoids shearing. The cable isof very high safety.

Description

technical field [0001] The invention relates to the field of cables, in particular to a direct-buried composite cable Background technique [0002] Directly buried cables are generally buried directly in the ground, so they often face a problem of being sheared. When an external force acts on the cable vertically downward, the cable is directly sheared, regardless of the strength of the outer layer. It will directly lead to the deformation of the cable. The inner core wire is subjected to shearing, and eventually it is damaged due to shearing or excessive pressure. The inner core wire cannot avoid this top-down force, causing huge economic losses. Therefore, this type of cable There are many unsafe factors in the use of . Contents of the invention [0003] The technical problem to be solved by the present invention is a direct-buried composite cable. When sheared, the inner core wire can be shifted and ejected to the outside, which can well avoid shearing, and can be susp...

AI Technical Summary

Problems solved by technology

[0002] Directly buried cables are generally buried directly in the ground, so they often face a problem of being sheared. When an external force acts on the cable vertically downward, the cable is directly sheared, regardless of the strength of the outer layer. It will directly lead to the deformation of the cable. The inner core wire is subjected to shearing, and eventually it is damaged due to shearing or excessive pressure. The inner core wire cannot avoid this top-down force, causing huge economic losses. Therefore, this type of cable There are many unsafe factors in the use of

Images