Mining optical cable and assembly thereof

Abstract

The invention discloses a mining optical cable which is sequentially provided with a secondary sheath, a primary sheath, a framework and an optical unit from outside to inside, and the section of the secondary sheath is hexagonal; the primary sheath is arranged in the secondary sheath, and the cross section of the primary sheath is square; the framework is arranged in the primary sheath and comprises four reinforcing hoops and four connecting bands, every two reinforcing hoops are connected through the corresponding connecting band, an axial through hole is formed in the center of the framework, each reinforcing hoop is composed of a long arc section and two identical short arc sections, the long arc sections are in an arc shape arching outwards, and the short arc sections are in an arc shape arching outwards. Each short arc section is in an arc shape arching towards the inner side, the two short arc sections are connected with the two ends of one long arc section respectively, and the two short arc sections abut against the inner side in a back-to-back mode. And the optical unit is one or more optical fibers sleeved in the beam tube, and the optical unit is arranged in the through hole along the axial direction. The mining optical cable is good in compression resistance and light in weight, and doubling and capacity expansion can be carried out on the basis of an original optical cable.

Description

technical field [0001] The invention belongs to the field of optical cables, in particular to a mining optical cable. Background technique [0002] Mining optical cable is a kind of optical cable used in mines such as coal mines, gold mines, and iron mines. In view of the complex environment of mines, the requirements for mine optical cables are relatively high, and they need to meet performance requirements such as rodent resistance, compression resistance, and fire prevention. The current mining optical cables use metal reinforcements as the central support, and thin steel wires or steel belts as the protective layer. Although they meet the requirements of rodent prevention and fire protection, they are heavy, and when the optical cable needs to be expanded, new lines can only be laid. Cannot be merged on the basis of the original line. [0003] In addition, in some lightning-prone mines, metal reinforcements and metal wires or belts will accumulate electric charges to g...

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Problems solved by technology

[0005] In view of this, the present invention proposes a mining optical cable and its components, which solves the problems in the prior art that the mining optical cable is heavy and cannot be paralleled and expanded on the basis of the original line.

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