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CN-122025242-A - Telephone communication cable for coal mine

CN122025242ACN 122025242 ACN122025242 ACN 122025242ACN-122025242-A

Abstract

The invention relates to the technical field of cables and discloses a telephone communication cable for a coal mine, which comprises a reinforcing core, a buffer structure, a cable inner core structure, an inner liner, an armor layer and an outer sheath, wherein the buffer structure is arranged outside the reinforcing core; according to the invention, the buffer structure is additionally arranged, the underground common radial extrusion and impact pressure is converted into axial dispersion force through pressure transmission and direction conversion, so that plastic deformation of the cable inner core structure due to local overload is fundamentally avoided, the gap that the buffer decompression function is lacking in the prior art is filled, the continuity of signal transmission is ensured, the design of the segmented spliced armor ring breaks through the defect that the traditional integral armor layer is damaged locally, namely, the armor ring is scrapped integrally, only the corresponding armor ring is needed to be replaced when the armor layer is damaged locally, and the maintenance cost and the downtime are greatly reduced.

Inventors

  • ZHANG XIYU
  • WEN YONGHENG

Assignees

  • 河北科安线缆有限公司

Dates

Publication Date
20260512
Application Date
20260402

Claims (9)

  1. 1. A telephone communication cable for coal mines, comprising: a reinforcing core (100), a buffer structure (200), a cable inner core structure (300), an inner liner (400), an armor layer (500) and an outer sheath (600); The buffer structure (200) is arranged outside the reinforced core (100), the cable inner core structure (300) is arranged at a gap of the buffer structure (200), the inner liner (400) is arranged outside the buffer structure (200), the armor layer (500) is arranged outside the inner liner (400), and the outer sheath (600) is arranged outside the armor layer (500); The buffer structure (200) is used for protecting the cable inner core structure (300) and comprises a plurality of buffer brackets (210) which are spliced with each other, when any buffer bracket (210) is stressed to deform, pressure is transmitted to other adjacent buffer brackets (210), so that the stressed radial pressure is converted into axial pressure, and the cable inner core structure (300) is protected from deformation; the armor (500) comprises a plurality of mutually spliced armor rings (510), and when the armor (500) is damaged at any position, the repair of the armor (500) is completed by replacing the armor rings (510) at the corresponding positions.
  2. 2. A telephone communication cable for coal mines according to claim 1, wherein the buffer support (210) comprises two buffer branches (211), the shape of the buffer branches (211) is similar to a carambola shape, the two buffer branches (211) are embedded in a staggered manner to form the buffer support (210) for improving the overall structural strength and roundness of the buffer support (210) and reducing the deformation threshold of a single buffer branch (211), and a connecting rod group (212) is arranged at the adjacent end of the two buffer branches (211) for fixedly connecting the two buffer branches (211).
  3. 3. A telephone communication cable for coal mines according to claim 1, characterized in that the cross-sectional area of the buffer support (210) at the peak covers the cross-sectional area of the cable core structure (300) for being subjected to external compression force for protecting the cable core structure (300) in advance.
  4. 4. The telephone communication cable for coal mines according to claim 1, wherein the joints of the buffer bracket (210) and the reinforcing core (100) are arranged in a staggered manner, so that the joint weakness is prevented from being located in the same direction.
  5. 5. A telephone communication cable for coal mines according to claim 1, characterized in that the inside of said inner liner (400) is filled with a flame retardant material for ensuring the roundness of the communication cable.
  6. 6. The telephone communication cable of claim 1, wherein the armor layer (500) comprises an inner armor (520) and an outer armor (530), the splice seam of the inner armor (520) and the armor ring (510) of the outer armor (530) being offset.
  7. 7. A telephone communication cable for coal mines according to claim 1, wherein said armouring rings (510) comprise an inner mounting ring (511) and an outer dislocated scale layer (512), the mounting ring (511) of adjacent armouring rings (510) corresponding to the dislocated scale layer (512).
  8. 8. The telephone communication cable for coal mines according to claim 1, wherein the inner liner layer (400) comprises an insulating layer (410), a shielding layer (420) and an inner sheath layer (430) from inside to outside in sequence.
  9. 9. A telephone communication cable for coal mines according to claim 1, wherein said outer jacket (600) comprises two flame retardant antistatic jacket layers.

Description

Telephone communication cable for coal mine Technical Field The invention relates to the technical field of cables, in particular to a telephone communication cable for a coal mine. Background In underground mineral exploitation operations such as coal and metal ore, a communication system is a core infrastructure for guaranteeing life safety of underground operators and realizing production scheduling coordination, a communication cable is used as a core carrier for signal transmission, operation stability of the communication system directly determines reliability of the communication system, mechanical damage is a primary cause for causing failure of the communication cable in underground environment, damage causes mainly include forced friction and extrusion in a laying process, crushed stone fall easily occurs in a roof breaking area due to dynamic change of the underground operation environment and directly impacts the cable, moving equipment such as a mine car and a heading machine are easy to crush cables which are not well protected when passing through a roadway, and tool collision is often caused in the process of carrying and overhauling equipment of underground tools, and impact/rolling of the type easily directly causes cable armor deformation, sheath breakage and even conductor breakage, so that communication interruption is caused and even secondary safety accidents are caused. The existing telephone communication cable for coal mines mainly solves the problem of mechanical damage by adding an integral armor layer and other protective layers, but the integral protective layer is used for protecting a cable core body by simply depending on the structural strength of the integral armor layer, does not have the additional protection functions of pressure dispersion, buffering, decompression and the like, has insufficient protection pertinence, has obvious improvement space structurally, needs to integrally cut and replace a damaged section when the integral protective layer is damaged, has complicated repair process, high maintenance cost and can also cause long-time communication interruption, thereby influencing the production safety in the pit. Disclosure of Invention The invention aims to solve the defects that the existing integrated protective layer in the prior art only depends on the structural strength to protect a cable core body, has no additional function, is insufficient in protection pertinence, needs to integrally cut and replace a damaged section when being damaged, is complicated in repair process and high in maintenance cost, and provides a telephone communication cable for a coal mine. In order to achieve the above purpose, the present invention adopts the following technical scheme: A telephone communications cable for coal mines comprising: the cable comprises a reinforcing core, a buffer structure, a cable inner core structure, an inner liner layer, an armor layer and an outer sheath; The buffer structure is arranged outside the reinforced core, the cable inner core structure is arranged at a gap of the buffer structure, the inner liner layer is arranged outside the buffer structure, the armor layer is arranged outside the inner liner layer, and the outer sheath is arranged outside the armor layer; the buffer structure is used for protecting the cable inner core structure and comprises a plurality of buffer brackets which are spliced with each other, when any buffer bracket is stressed to deform, pressure is transmitted to other adjacent buffer brackets, so that the stressed radial pressure is converted into axial pressure, and the cable inner core structure is protected from plastic deformation; the armor includes a plurality of mutually spliced armor ring, when the armor received the destruction in optional position, accomplished the restoration to the armor through the armor ring of changing corresponding position. As a further scheme of the invention, the buffer support comprises two buffer branches, the shape of each buffer branch is similar to that of a carambola, the two buffer branches are staggered and embedded to form the buffer support, the buffer support is used for improving the overall structural strength and roundness of the buffer support, meanwhile, the deformation threshold of a single buffer branch is reduced, and a connecting rod group is arranged at one end, close to the two buffer branches, of the buffer support and is used for fixedly connecting the two buffer branches. As a further aspect of the present invention, the cross-sectional area of the peak of the buffer support covers the cross-sectional area of the cable core structure, for being subjected to external extrusion force in advance, so as to protect the cable core structure. As a further scheme of the invention, the connecting joints are arranged at a plurality of connecting positions of the buffer support and the reinforcing core in a staggered manner, so that the connecting weak positions