Mine Shaft Wireless Communication System, Rope Slacking Prevention
Mine Shaft Wireless Communication System is designed for coordinating actions of technological personnel and operators of mine hoisting machines when carrying out work on descent and ascent of people, audits, inspections and repair work in mine shafts, monitoring condition of sensors of lifting vessels (mine cage or skip) and issuing control signals to control circuit of mine hoisting machines.
MAIN PURPOSES:
- safety operation of mine hoists and early emergency prevention;
- fast and reliable wireless communication in mine shafts.
FUNCTIONS:
- voice and signals wireless communication in mine shafts between personnel in mine cages, skips, buckets and hoist operator;
- conveyance devices control (cage doors, skip gates, rope tension and others) and data transmission to hoist operator and hoist control system;
- rope slacking control;
- protections and interlocks (emergency stop, start lock and others);
- communication with hoist control system;
- events archive recording.
Scheme. Mine Shaft Wireless Communication System, Rope Slacking Prevention (click to enlarge)
MAIN TECHNICAL CHARACTERISTICS:
|
range coverage |
vertical mine shafts up to 1500 m depth; |
|
data transmission speed via wireless channel |
up to 250 kbit/s; |
|
operating conditions in mine headgear and shaft: |
|
| · air temperature |
from - 40 to + 40 0С; |
|
· relative humidity |
up to 100% at temperature + 40 (+/-2) 0С; |
|
supply voltage in mine headgear and shaft |
12 V, DC; |
|
continuous operation time from one fully charged battery |
more than 120 hours; |
|
ingress protection rating of equipment in mine headgear and shaft |
IP65; |
|
explosion protection |
intrinsically safe equipment (group I) suitable for operation in explosive methane and/or coal dust mines |
ADVANTAGES:
- digital format of voice and data transmission;
- high speed and reliable wireless communication;
- operating frequencies range does not required special permittings;
- transmitters working together in the same shaft do not mutually interfere each other;
- high ingress protection;
- modern and high quality elements base;
-
simple and low-cost maintenance.
FUNCTIONS:
ü voice and signals wireless communication in mine shafts between personnel in mine cages, skips, buckets and hoist operator;
ü conveyance devices control (cage doors, skip gates, rope tension and others) and data transmission to hoist operator and hoist control system;
ü rope slacking control;
ü protections and interlocks (emergency stop, start lock and others);
ü communication with hoist control system;