本文選題：傾斜井巷　切入點：追排水系統(tǒng)　出處：《太原理工大學》2016年碩士論文

【摘要】：隨著煤炭消耗量的增加,煤炭行業(yè)逐漸向深井方向發(fā)展,引起煤礦水災事故的頻繁發(fā)生。現(xiàn)有的救援排水設備不能在黃金救援時間內(nèi)很好地發(fā)揮作用,因此必須逐步完善救援設備、優(yōu)化排水救援方案,提高搶險排水效率。本文是以多起典型煤礦透水救援案例為背景,瞄準煤礦傾斜井巷透水工況,設計和研究一套追排水系統(tǒng)。在排水車樣機系統(tǒng)上,對系統(tǒng)關鍵技術(shù)的各項性能進行理論、仿真和試驗研究,并結(jié)合試驗及實際工況進一步拓展和完善排水車的追排水系統(tǒng)。完成排水車的車架平臺、軌道和履帶行走機構(gòu)、水泵起吊系統(tǒng)的裝配。利用Ansys對排水車進行靜力學仿真分析,仿真工況分為履帶行走和軌道支撐牽引行走。由變形位移、應力及模態(tài)仿真結(jié)果得出:設計和裝配的排水車在兩種工況下的變形和應力滿足使用條件;整車與外激勵不會發(fā)生共振。與此同時,制定了煤礦傾斜巷道下的追排水方案和排水管道系統(tǒng)方案,包括揚程較大直接排水至地面的單泵排水、揚程較大直接排水至地面——多泵排水、揚程小于50米倒排水,以及追排水過程中的管道延伸方案。利用動力學仿真軟件RecurDyn對排水車履帶行走進行模擬。首先對履帶行走運動學理論進行研究,基于Bekker理論推導主動輪的驅(qū)動力及力矩、車的行駛阻力以及牽引力。再重點分析排水車低速轉(zhuǎn)向的動力學,進行轉(zhuǎn)向時牽引力的理論研究。最后對平地直行、300坡道爬坡、單側(cè)轉(zhuǎn)向及雙側(cè)反向轉(zhuǎn)向、越障及跨溝進行仿真。通過輸出履帶片1與主動輪的接觸力、主動輪驅(qū)動力矩、履帶與地面作用力、履帶片1與各輪滾動接觸力、履帶片1的張緊力,進行排水車各工況的運行可行性及可靠性分析。由仿真結(jié)果得出:直行及300坡道行駛平穩(wěn);單、雙側(cè)轉(zhuǎn)向最大平面直徑為3.43m、2.695m;排水車可跨越600mm高的單側(cè)障礙物,跨越900mm寬的凹溝。對排水車進行模擬現(xiàn)場試驗,試驗目的為:履帶行走、軌陸切換、履帶車與水泵配合、排水車追排水。由試驗可知:軌道支撐行走系統(tǒng)運行平穩(wěn)且不會出現(xiàn)傾翻和軟腿現(xiàn)象;水泵與車的搭建效率高,起吊平穩(wěn)且固定可靠,水泵起吊高度可達500mm,水泵前后可形成最大300傾角;履帶行走機構(gòu)在沙土地面可平穩(wěn)實現(xiàn)前行、倒退、轉(zhuǎn)向和爬坡,而且可以攜帶水泵進出1m深的水池完成追排水;試驗中配備的蝶閥和逆止閥密封性高,管道延伸時上端水流不會泄露。根據(jù)現(xiàn)場試驗總結(jié)的不足,進一步完善以提高追排水的速度和效率。在電控液壓系統(tǒng)的基礎上安裝防爆柴油機實現(xiàn)雙動力源行走,提高了排水車履帶行走的靈活性;設計一套排水管道法蘭輔助連接裝置,實現(xiàn)法蘭管道的快捷連接;設計一種排水管道位移逆止閥,隨著管道的延伸在鋼絲編織管內(nèi)移動,提高了排水管道延伸的效率。
[Abstract]:With the increase of coal consumption, the coal industry is gradually developing to the direction of deep wells, which leads to frequent accidents of coal mine floods. The existing rescue and drainage equipment can not play a good role in gold rescue time. Therefore, the rescue equipment must be improved step by step, the drainage rescue scheme should be optimized, and the efficiency of emergency drainage should be improved. Design and study a set of drainage system. In the prototype system of drainage vehicle, the performance of key technology of the system is studied in theory, simulation and experiment. Combined with the test and actual working conditions, the drainage system of the drainage vehicle is further expanded and perfected. The platform of the frame of the drainage vehicle, the track and track walking mechanism, the assembly of the pump hoisting system are completed. The statics simulation analysis of the drainage vehicle is carried out by using Ansys. The simulation results show that the deformation and stress of the designed and assembled drains meet the operating conditions under two working conditions. There is no resonance between the whole vehicle and the external excitation. At the same time, the scheme of catch-up drainage and drainage pipe system under the inclined roadway of coal mine has been formulated, including the single pump drainage with large lift and direct drainage to the ground. The head is drained directly to the ground-multi-pump drainage, the head is less than 50 meters backward drainage, The dynamic simulation software RecurDyn is used to simulate the crawler movement of drainage vehicle. Firstly, the kinematics theory of crawler is studied, and the driving force and torque of active wheel are deduced based on Bekker theory. The driving resistance and traction of the vehicle. The dynamics of the low speed steering of the drainage vehicle is analyzed, and the theoretical study of the traction force during the steering is carried out. The contact force between the track piece 1 and the active wheel, the driving moment of the active wheel, the interaction force between the track and the ground, the rolling contact force between the track piece 1 and each wheel, and the tension force of the track piece 1 are outputted. The operating feasibility and reliability of the drainage vehicle are analyzed. From the simulation results, it is concluded that the straight and 300 ramps are running smoothly, the maximum plane diameter of single and double steering is 3.43 m / 2 695 m, and the drainage vehicle can cross the single side obstacle with high 600mm, the maximum plane diameter is 3.43 m / m and the maximum plane diameter is 2.695m. The purpose of the test is: track walking, rail land switching, track car matching with water pump, From the test, we can know that the track supporting and walking system runs smoothly and does not appear the phenomenon of overturning and soft leg, the construction efficiency of water pump and vehicle is high, the lifting is stable and fixed and reliable, The lifting height of the pump can reach 500mm, and the maximum inclination angle of 300 can be formed before and after the pump. The crawler walking mechanism can smoothly advance, retrograde, turn and climb the slope on the ground of sand soil, and can carry the pump in and out of the 1 m deep pool to complete the chasing and drainage. The butterfly valve and the reverse stop valve provided in the test have high sealing ability, and the upper end water flow will not leak when the pipeline is extended. According to the deficiency summarized in the field test, In order to improve the speed and efficiency of water recovery and drainage, the explosion-proof diesel engine is installed on the basis of electronic-hydraulic system to realize dual power source walking, which improves the flexibility of track walking of drainage vehicle, and designs a set of drainage pipe flange auxiliary connecting device. To realize the quick connection of the flange pipe, a displacement reverse stop valve of the drainage pipe is designed, which moves in the wire braided pipe with the extension of the pipe, and improves the efficiency of the drainage pipeline extension.
【學位授予單位】：太原理工大學
【學位級別】：碩士
【學位授予年份】：2016
【分類號】：TD442

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