【摘要】：鋼絲繩牽引皮帶式輸送機在礦山的開采運輸中具有非常重要的作用,它不僅能從礦井向外輸送煤炭,而且煤礦工人可乘坐鋼帶機來進出礦井。本文針對銅川某煤礦鋼帶機在工人下井時出現(xiàn)的下滑失速問題進行了研究,改定了液壓制動控制系統(tǒng),該液壓系統(tǒng)可使鋼帶機在正常啟動、工作制動、緊急制動、斷電制動、按預(yù)設(shè)速度穩(wěn)定運轉(zhuǎn)等不同工況之間運行。由于缺乏原始設(shè)計資料,本文首先對該煤礦所采用的鋼帶機的結(jié)構(gòu)及其工作原理進行了分析,并對所采用的主要部件進行了受力校核,對鋼帶機的驅(qū)動部件進行布置分析,驗算了驅(qū)動功率及制動力矩,并對鋼帶機的輸送帶鋼絲繩的同步問題進行了探討。最后根據(jù)計算與校核結(jié)果設(shè)計出新的液壓制動系統(tǒng)和其控制系統(tǒng)。液壓系統(tǒng)主要采用蓄能器充液閥來給蓄能器充液,以此壓力來實現(xiàn)系統(tǒng)的制動;采用電磁比例溢流閥對制動壓力進行調(diào)節(jié),以此進行制動力控制,保證鋼帶機工作中不出現(xiàn)輸送帶失速現(xiàn)象�？刂葡到y(tǒng)主要采用單片機來判斷系統(tǒng)是否出現(xiàn)失速現(xiàn)象,以此決定電磁比例溢流閥是否接通制動;使用放大器來控制電磁比例溢流閥的電磁鐵的電流,來達到調(diào)節(jié)制動力,穩(wěn)定速度的目的。
[Abstract]:Wire rope traction belt conveyor plays a very important role in mining and transportation of mine. It can not only transport coal from the mine but also the coal miners can use the belt machine to enter and leave the mine. In this paper, the problem of sliding stall of steel belt machine in Tongchuan coal mine is studied, and the hydraulic brake control system is modified. The hydraulic system can make the steel belt machine start up normally, work brake, emergency brake, power off brake. According to the preset speed stable operation and other different operating conditions between the operation. Due to the lack of original design data, this paper firstly analyzes the structure and working principle of the steel belt machine used in this coal mine, and makes a force check on the main parts used, and analyzes the arrangement of the driving parts of the steel belt machine. The driving power and braking torque are calculated, and the synchronization of steel rope for belt conveyor is discussed. Finally, a new hydraulic braking system and its control system are designed according to the results of calculation and verification. The hydraulic system mainly uses the accumulator filling valve to fill the accumulator with the pressure to achieve the braking of the system. The brake pressure is regulated by electromagnetic proportional relief valve to control the braking force to ensure that the belt stall does not occur in the work of the steel belt machine. The control system mainly uses singlechip to judge whether the system is stall or not, so as to determine whether the electromagnetic proportional relief valve is connected with the brake. The amplifier is used to control the electromagnet current of the electromagnetic proportional relief valve to adjust the braking force and stabilize the speed.
【學位授予單位】：長安大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TD528.1

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