【作者】 韩帮强；

【导师】 张安宁；

【作者基本信息】 安徽理工大学 ， 机械制造及其自动化， 2008， 硕士

【摘要】 在煤矿运输系统中大量采用带式输送机,胶带纵向撕裂是带式输送机使用过程中发生的严重事故之一,一旦发生纵撕事故将直接影响到煤矿的生产效率及生产安全,并且造成重大的经济损失。本文对胶带纵向撕裂原因进行了分析,对目前国内外常用的防纵撕保护原理及方法进行对比和总结,针对现有的保护装置都是被动式滞后预防,不能从根本上解决胶带纵撕问题,提出了超前保护的设计思想。重点研究了防卡压撕裂和防异物穿透撕裂超前防纵向撕裂装置的设计思路、结构特点及其软硬件的实现及应用。通过对超前预防胶带纵向撕裂原理进行分析,对于在装载点处易发的物料卡压撕裂和异物穿透撕裂两种撕裂情况,设计出可预防装载点卡压撕裂和异物穿透撕裂的传感装置,该装置利用装载漏斗或溜槽上添加的活页板配合行程开关和压力传感器,判断装载点是否有物料卡压,利用整体缓冲托辊架配合压力传感器,判断装载点是否有异物穿透胶带。通过超前保护装置检测系统对所需信号进行采集、转换、处理和比较,实施报警或停机保护。该装置可对带式输送机进行在线监测,实现主动式超前预防保护。本文根据实验室实验条件设计制作了该保护装置模型样机,对物料卡压和异物穿透两种撕裂情况进行模拟功能实验,实验结果验证了超前保护装置设计的合理性和可靠性,可有效地避免胶带纵向撕裂的问题。更多还原

【Abstract】 Belt conveyor is extensively used in the coal mine transport system, and adhesive tape longitudinal tear is the one of more serious incident in wire cord belt conveyor using, directly affect the production efficiency and production safety of the coal mine, and cause huge economic losses. This paper has analyzed reasons of adhesive tape longitudinal tear, compared and summarized the current popular longitudinal tear-protection principle and method at home and abroad. It proposed the thinking of advanced protection with existing protective devices passive lag prevention and failed to fundamentally solve the problem of tape longitudinal tear. The paper focus on the prevention device designs of entrapment tearing and advance anti-penetrating foreign body longitudinal tear, and structural characteristics of the hardware and software implementation and application. Through advance prevention principle of longitudinal tear, and two torn situation at loading point compression of materials, and foreign body penetrating tearing, it designs sensor devices to prevent loading and tearing pressure penetrating with irregular body. The device uses the funnel or loading chute and loose-leaf board with the trip switch and pressure sensor to determine loading materials entrapment. It uses overall buffer roller and pressure sensor to determine foreign body penetrating belt at loading point. Through advanced detection system to protect the device for signal acquisition, conversion, processing and comparison, the device can implement the alarm or shutdown protection. The device can be carried out on-line monitoring of the belt conveyor to achieve active ahead of protective measures. Based on laboratory experimental conditions, the paper designs a prototype model of the protection device, and conducts analog function experiments with materials and the pressure of the foreign body penetrating tearing. Experimental results show rationality and reliability of the advance protection. It can be effectively avoided tape longitudinal tear problems.更多还原