刮板输送机链条自动张紧系统的研究与应用

Research and Application of Automatic Tensioning System of Scraper Conveyor Chain

为了避免传统的刮板输送机由于人工紧链方式使链轮磨损严重而导致刮板断链等事故的发生,设计了一种刮板输送机链条的自动张紧装置,该装置是将压力传感器装于输送机伸缩机尾的油缸部件,链条的张力经过油缸内部压力传至压力传感器,传感器监测到的值再传到PLC控制系统,系统内部事先根据载荷等因素设定链条的预设值,分析监测值与预设值后,经逻辑判断并发送控制信号到电磁阀,进而控制油缸的伸缩,达到自动张紧链条之目的。通过在综采工作面使用该装置,消除了各种不安全因素,保证了设备正常运行,延长了刮板输送机的使用寿合,同时,提高了自动化程度,降低了工人的劳动强度。

The device is that installs the pressure sensor on the cylinder parts of extendable conveyor belt tail, chain tension is transmitted to pressure sensor by internal pressure of cylinder, sensors transfers the monitor value to PLC control system, the internal system sets default according to the chain loading and other factors in advance, after analyses monitoring value and preset value sends control signal to solenoid valves by logical judgment, and then controls the oil cylinder expansion, achieves the purpose of automatic tensioning chain. By using the device in fully mechanized working face, eliminates all kinds of unsafe factors, ensures the normal operation of equipment, increases the service life of scraper conveyor, at the same time improves the degree of automation, reduces the labor intensity of worker.