刮板输送机技术发展历程(三)——驱动与智能控制技术

The development history of scraper conveyor technology(Part three):intelligent drive and control technology

刮板输送机自诞生以来,其控制技术从人工控制发展为集中控制、远程控制、自动控制、智能控制。在综采工作面“大三机”中,刮板输送机是最先实现自动化,也是最早跨入初级智能化的采矿装备,智能刮板输送机支撑了智能化采煤时代的发展。认为,高级智能化刮板输送机至少应具备运行状态、机器姿态和设备状态3种状态,具备自主感知、自主决策、自主调控3种能力,以此形成采煤工作面煤流装载运输智能协作机群。总结了刮板输送机软启动技术发展,介绍了刮板输送机转弯驱动技术。指出,最新研发的永磁电机半直驱刮板输送机取代了传统驱动方式,使刮板输送机在综采工作面端头占用的空间大幅度缩减,提升了输刮板送机的驱动智能性、设备运行的可靠性、井下空间的通畅性和端头顶板的支护性。近年来,国外公司推出的Opti Drive AFC自动控制系统,国内公司推出的采煤工作面远程集中监控驾驶舱和刮板输送机智能控制系统,均具有刮板输送设备工况监测、链条自动张紧、煤量监测、关键零部件健康状态分析、智能启动调速及故障诊断等功能,支撑了综采工作面的全自动化运行。

Since the birth of the scraper conveyor,its control technology has developed from manual control to centralized control,remote control,automatic control and intelligent control.Among shearer,support and scraper conveyor of the fully mechanized mining equipment,scraper conveyor is the first to realize automation,and is also the earliest mining equipment to enter the primary level of intelligence,which supports the development of intelligent coal mining era.In this paper,it is proposed that the advanced intelligent scraper conveyor should at least have the ability of autonomous perception,autonomous decision-making and autonomous control of the running state,machine attitude and equipment state,so as to form an intelligent cooperative group of coal flow loading and transportation in the coal mining face.This development history of soft start technology of scraper conveyor is summarized and the turning drive technology of scraper conveyor is introduced.It is pointed out that the newly developed permanent magnet motor semi-direct drive scraper conveyor could replace the traditional drive technology,which greatly reduces the space occupied by the scraper conveyor at the end of the workface,improves the drive intelligence and operation reliability of the conveyor,and enhances the accessibility of underground space and the support safety of the workface end roof.In recent years,foreign companies have launched the Opti Drive AFC automatic control system,while domestic companies have launched the remote centralized monitoring cockpit for coal mining working face and scraper conveyor intelligent control system,which have functions such as scraper conveyor equipment condition monitoring,chain automatic tensioning,coal quantity monitoring,intelligent starting,intelligent speed regulation,fault diagnosis,and key component health status analysis,supporting the fully automated operation of fully mechanized mining face.