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  本文選題：礦用鉆機　切入點：靜力平衡液壓馬達(dá)　出處：《安徽理工大學(xué)》2017年碩士論文　論文類型：學(xué)位論文

【摘要】：由于礦用手持鉆機用于煤礦井下及周圍介質(zhì)中有甲烷、煤塵等爆炸性混合氣體的環(huán)境中,從安全角度考慮,煤電鉆存在安全隱患;風(fēng)煤鉆鉆孔能力小,且體積大,噪聲大,工作產(chǎn)生灰塵大,工作環(huán)境惡劣,人工操作風(fēng)煤鉆較為困難。針對以上問題,本論文設(shè)計了一種新型手持式礦用鉆機設(shè)備,該設(shè)備以靜力平衡液壓馬達(dá)作為動力源,使用行星齒輪輪系增大轉(zhuǎn)速,利用鉆頭的切割性能進(jìn)行煤巖石的鉆孔。本文對鉆機進(jìn)行主體結(jié)構(gòu)設(shè)計及尺寸計算,并設(shè)計鉆機的整體液壓回路,合理布置馬達(dá)和行星輪系的結(jié)構(gòu);對馬達(dá)的主要零件參數(shù)進(jìn)行設(shè)計計算,選擇行星齒輪的配齒數(shù)以及變位系數(shù),校核齒輪接觸疲勞強度以及彎曲疲勞強度。對靜力平衡液壓馬達(dá)的部分重要零件進(jìn)行受力以及運動分析,并計算分析馬達(dá)的流量特性,對曲軸的0初始角度時的受力進(jìn)行分析,并校核此時曲軸的強度,由于曲軸最主要受到周期旋轉(zhuǎn)的彎矩的作用,所以主要是疲勞強度的校核;對活塞的位移、速度、加速度進(jìn)行分析,對鉆機整體的機械效率進(jìn)行了計算。建立鉆機液壓回路,利用液壓回路的流量關(guān)系使用可壓縮流體連續(xù)方程推導(dǎo)出流量數(shù)學(xué)關(guān)系,同時對鉆機輸出端使用扭矩平衡建立數(shù)學(xué)關(guān)系,使用拉氏變換求解液壓回路傳遞函數(shù)以及鉆機扭矩傳遞函數(shù)。借助Matlab中的Simulink模塊建立仿真模型,研究靜力平衡液壓馬達(dá)的扭矩特性。用三維建模軟件SolidWorks建立鉆機的三維模型,使用Ansys中的workbench模塊對曲軸零件進(jìn)行網(wǎng)格劃分,并完成曲軸的模態(tài)分析,研究曲軸的低階固有頻率,以及振型。防止液壓馬達(dá)曲軸傳動發(fā)生共振導(dǎo)致疲勞破壞。
[Abstract]:Because the hand-held drilling rig is used in the coal mine and the surrounding medium where there are explosive mixed gases such as methane, coal dust and other explosive gases, from the safety point of view, the coal electric drill has a hidden danger of safety, and the air coal drill has a small drilling capacity, a large volume and a large noise. In order to solve the above problems, a new type of hand-held mining rig equipment is designed, which uses static balancing hydraulic motor as power source. The planetary gear train is used to increase the rotational speed, and the cutting performance of the bit is used to drill the coal and rock. In this paper, the main structure design and size calculation of the drilling rig are carried out, and the integral hydraulic circuit of the drill is designed. Reasonable arrangement of the motor and planetary gear train, design and calculation of the main parts parameters of the motor, selection of the number of teeth of the planetary gear and modification coefficient, Check the contact fatigue strength and bending fatigue strength of gears. Analyze the force and motion of some important parts of the static balancing hydraulic motor, calculate and analyze the flow characteristics of the motor, and analyze the force of the crankshaft at the initial angle of 0. And check the strength of the crankshaft at this time, because the crankshaft is mainly affected by the bending moment of periodic rotation, so it is mainly the checking of fatigue strength; the displacement, velocity and acceleration of the piston are analyzed. The mechanical efficiency of the whole drilling rig is calculated. The hydraulic loop of drilling rig is established, and the mathematical relationship of flow rate is derived by using the compressible fluid continuous equation by using the flow relationship of the hydraulic circuit. At the same time, the mathematical relation of torque balance is established for the output end of drilling rig, and Laplace transform is used to solve the hydraulic circuit transfer function and the torque transfer function of drilling rig. The simulation model is established with the help of Simulink module in Matlab. The torque characteristic of static balancing hydraulic motor is studied. The 3D model of drilling rig is established by SolidWorks, and the crankshaft parts are meshed by workbench module in Ansys. The modal analysis of crankshaft is completed, and the low order natural frequency of crankshaft is studied. And vibration mode. Prevent hydraulic motor crankshaft drive from resonance leading to fatigue damage.
【學(xué)位授予單位】：安徽理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TD421

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本文編號：1644459