Reliability and life abroad belt in the gap
⑴ tensile strength of China's production of conveyor whole flame retardant fabric conveyor belts up to 2500 N / mm, foreign to 3150 N / mm. Flame retardant conveyor belt
rope up to 4000 N / mm, foreign to 7000 N / mm.
⑵ conveyor belt joint strength of the joint strength is mastering 50% to 65%, up to mastering abroad for 70% to 75%.
⑶ idler roller life of our existing technology and foreign comparative, short life, low speed, resistance, while the United States such as the use of new oiling roller, its
running resistance, bearings lubricated with thin oil, greatly improve the care roll life, and as a high-speed roller application
On the conveyor, the use of a wide range of significant economic benefits. Our conveyor idler life 20000 h, life abroad roller 5 to 90,000 h, domestic roller life expectancy was
only 30% of foreign products to 40%.
⑷ conveyor conveyor reducer reducer life life of 20,000 h, foreign reducer life 70,000 h.
⑸ poor reliability belt conveyor running up and down
3.4 Control system gaps
⑴ drive speed of the fluid coupling and hard gear reducer drive abroad diverse ways, such as the BOSS system, CST controllable transmission, and control accuracy.
⑵ monitoring device has been adopted abroad chain conveyor grade programmable logic controller PLC, the development of advanced primary and comprehensive program of soft power
relay control technology and data admissible, processing, storage, transmission, fault diagnosis and automatic monitoring system such as a complete query. Only our conveyors
Using a mid-range programmable controller to control the conveyor starts, normal operation, shutdown and other works. Although with controllable Kai (system) with the use of
supporting devices to achieve controllable Kai (system) moving with speed synchronization, power balance and other functions, but it does not automatically close device, there
Fault diagnosis and inquiries.
⑶ abroad Plastic belt conveyor in addition to installing protective devices to prevent belt running, slipping, tearing, too full blockage, automatic sprinkler dust and other
protective devices, in recent years has developed a lot of new monitoring devices: drive pulley, change the drum and idlers temperature monitoring system;
Smoke alarm and automatic fire extinguishing device; fibers woven belt longitudinal tear and joint monitoring system; proof electronic belt scale automatic metering system.
These new protection system of China's basic in the blank. And our existing skid pile of coal, Coal Chute warehouse full protection, anti-deviation, ultra
Temperature sprinklers, smoke alarm device reliability, sensitivity, life expectancy is relatively low.