1. A coal mining machine health degree evaluation method is characterized in that the coal mining machine health degree is an index reflecting the health state of a coal mining machine, the overall health condition of a coal mining machine system can be indicated in real time by adopting percent system,
the real-time health calculation formula of the coal mining machine comprises:
when the coal mining machine has no fault:
health degree J-Jo-D × (Ty/16+ Tg/16+ Ma/2+ Mt/2+ Fa/5) (1)
When the shearer is in serious failure:
health degree J × 60% × (1-Fm/10) ═ J × (60-6Fm)/100 (2)
When the shearer is in common fault occurrence:
health ═ J × (1-Fn/20 × 40%) ═ J × (100-2Fn)/100 (3)
Wherein, the health degree formula parameters comprise:
normal usage loss (hours): the content of Ty is not more than Ty,
cumulative coal cutting exceeding time (hours) on the same day: a Tg of the polymer (A) to be modified,
accumulating the motor overload standard exceeding time (hours) on the same day: the number of the Ma lines is the same as the number of the Ma lines,
accumulating the overheating overproof time (hours) of the motor on the same day: the number of the Mt and the number of the Mt,
cumulative shutdown serious fault exceeding times (times) on the same day: fa of the number of the first frames,
the number of serious faults currently occurring simultaneously: and (Fm) performing a step of performing Fm,
number of common faults currently occurring simultaneously: the number of the Fn-shaped grooves is Fn,
yesterday health: the flow rate of the water flowing into the Jo,
health degree of today: j, the number of the first and the second,
the health degree is decreased by the average value D every day,
the definition of the health degree formula parameters comprises the following steps:
normal usage loss (hours): the content of Ty is not more than Ty,
when the starting time is less than 4 hours and the coal cutting time is less than 1 hour, Ty is 0;
when the coal cutting time is less than 1 hour, Ty is equal to (the hour of starting up on the same day-4)/4;
when the coal cutting time exceeds 1 hour, Ty is the coal cutting hours of the day,
cumulative coal cutting exceeding time (hours) on the same day: tg, the accumulated time when the speed of the traction motor is greater than 0, and the standard time is reduced;
accumulating the motor overload standard exceeding time (hours) on the same day: and Ma, calculating the overload overproof time of a single motor, and adding the overload overproof times of all the motors to obtain the current accumulated overload overproof time Ma of the motor, wherein
The overload standard exceeding time of a single motor is the accumulated time-standard time when the load of the single motor is more than 110%;
accumulating the overheating overproof time (hours) of the motor on the same day: mt, firstly calculating the overheating overproof time of a single motor, and then adding the overheating overproof times of all the motors to obtain the accumulated overheating overproof time Mt of the motor in the same day, wherein
The overheating overproof time of a single motor is the accumulated time-standard time of the temperature of the single motor at more than 135 ℃;
cumulative shutdown serious fault exceeding times (times) on the same day: fa, number of failures causing shutdown, minus the standard number;
the number of serious faults currently occurring simultaneously: fm, calculating according to 10 faults when more than 10 serious faults occur simultaneously;
number of common faults currently occurring simultaneously: fn, calculating according to 20 when more than 20 common faults occur simultaneously;
yesterday health: jo, initial Jo 100
Health degree of today: j, the number of the first and the second,
the health degree is decreased by the average value D every day, according to the principle that the factory is normally used for 3 years and needs to be overhauled, the health degree at the time of factory is defined as 100 points, the health degree after the normal use for 3 years is defined as 50 points, the health degree decreased by the normal use every day is defined as 0.0457 point 50/3/365 point,
normal use standard of coal mining machine every day:
starting up the machine for more than 4 hours every day, and recording the time of cutting coal for 4 hours every time when the time of cutting coal is less than 1 hour as the time of cutting coal containing 1 hour;
the coal cutting time is more than 1 hour and less than 16 hours every day, and the coal cutting time is 1 day after every 16 hours;
the average overload time of each motor is less than 1 hour every day, and the average overload time of any motor is 1 day every 2 hours after the overload time of any motor exceeds;
the average overheating time of each motor is less than 1 hour every day, and every 2 hours is calculated for 1 day after any motor exceeds;
the number of times of the shutdown serious faults is less than 5 times every day, and the number of times of the shutdown serious faults is more than 1 day every 5 times;
the faults are classified into serious faults which cause shutdown after occurrence and common faults which only alarm without shutdown after occurrence,
when the health degree of the coal mining machine is 80-100 minutes, the health degree is represented by a blue background word; at 60-80 min, the alarm is represented by an alarm word with a yellow background; when the time is 0-60 min, the time is indicated by a character of 'failure' with a red background.