【作者】 李慧；

【导师】 宋志安；

【作者基本信息】 山东科技大学 ， 机械工程， 2019， 硕士

【摘要】 柴油机调度单轨吊机车是一种煤矿轻型辅助运输牵引设备,与传统的柴油机单轨吊机车相比,以小型柴油机提供动力,通过液压系统输送到驱动装置,实现系统的负载运行。由两个驱动单元输出驱动力,结构紧凑,可遥控操作。因此,调度单轨吊机车不但很好的解决了长距离、大坡度、重载荷,底鼓变形严重等复杂问题,也解决了过风门困难等一系列技术问题,与气动单轨吊和蓄电池单轨吊相比,可以长时间运输和满足各种井下困难工况条件。本文以新型柴油机调度单轨吊为研究对象,进行结构设计和系统建模,优化调度单轨吊机车的实用性能。首先归纳分析了现有柴油机单轨吊使用过程中存在的缺陷,根据实际井下工作状况和工作要求,确定了液压系统的设计方案,设计了离心式安全触发小车,利用MATLAB软件编程计算出该型调度单轨吊机车在不同斜坡倾角下的承载能力、不同坡道下的速度与牵引力特性曲线并验证了机车的制动距离。然后对整体的液压系统进行设计分析,分别对运输主回路和安全辅助回路进行了具体的分析及设计,结合调度单轨吊机车的工况参数对液压主系统和辅助回路系统主要元件计算并选型,对泵控马达系统建立数学模型,分析影响马达转速的主要影响因素。设计了机车的电液控遥控系统,包括遥控器和无线发射器的设计。基于AMESim仿真软件,对该调度单轨吊行走回路、制动回路和夹紧回路进行建立模型仿真,并在不同载荷情况下分析负载与系统压差的关系,制动缸速度、位移及插装阀腔内压力的特性曲线。重点分析了制动系统中插装阀阻尼孔直径和阀芯弹簧刚度的参数对制动缸动作性能的影响。利用FluidSIM软件对运输辅助回路仿真模拟,验证了辅助回路设计的可行性。最后使用Solidworks软件完成机车各零部件以及整体机车装配体的模型建立,使用Solidworks/Motion插件对驱动部进行运动学分析,更加直观的显示驱动部机架的受力,使用ANASY/Workbench插件对驱动部机架和制动臂进行结构分析,其强度和刚度满足各项性能指标。样机生产完成后,分别进行了厂内试验和井下工业试验,验证了机车的主回路和辅助回路在实际工作过程中能够完成预期的行走、夹紧、制动工作。本文以单轨吊机车的安全性与可靠性为原则,对该型单轨吊机车液压系统和整体机械结构进行了设计研究,对调度单轨吊之后的改进具有一定的参考价值。更多还原

【Abstract】 The diesel engine dispatching monorail locomotive is a coal mine light auxiliary transport traction device.Compared with the traditional diesel monorail locomotive,it is powered by a small diesel engine and is transported to the drive device through a hydraulic system to realize the load operation of the system.The driving force is output by two driving units,which is compact and can be operated remotely.Therefore,the dispatching of the monorail locomotive not only solves the complicated problems of long distance,large slope,heavy load and serious deformation of the bottom drum,but also solves a series of technical problems such as difficulty in passing through the damper,Compared with pneumatic monorail crane and battery monorail crane,it can be transported for a long time and meet various underground difficult working conditions.This paper takes the new monorail crane as the research object,carries on the structural design and the system modeling,optimizes the dispatch monorail crane vehicle practical performance.In this paper,the defects of the existing diesel monorail crane are summarized and analyzed.According to the actual downhole working conditions and work requirements,the design scheme of the hydraulic system is determined.The centrifugal safety trigger trolley is designed.The MATLAB software is used to calculate the bearing capacity of the single monorail locomotive under different slope inclination angles,the speed and traction characteristics under different slopes and verify the braking distance of the locomotive.Then the whole hydraulic system is designed and analyzed,and the transportation main circuit and safety auxiliary circuit are analyzed and designed respectively.The main components of hydraulic main system and auxiliary loop system are calculated and selected according to the working condition parameters of monorail crane,establish a mathematical model for the hydraulic system,and analyze the main influencing factors affecting the motor speed.The electro-hydraulic control remote control system of locomotive is designed,including remote control and wireless transmitter.Based on the AMESim simulation software,the model of the monorail suspension travel circuit,the brake circuit and the clamping circuit is simulated,and the relationship between load and system pressure difference is analyzed under different load conditions.Brake cylinder speed,displacement and cartridge valve Characteristic curve of intracavity pressure.The influence of the parameters of the damping hole diameter of the cartridge valve and the stiffness of the spool spring on the braking performance of the brake cylinder is analyzed.Using the FluidSIM software to simulate the transportation auxiliary loop,the feasibility of the auxiliary loop design is verified.Finally,using Solidworks software to complete the model building of the locomotive components and the overall locomotive assembly,using the Solidworks/Motion plug-in to perform kinematic analysis of the drive unit,more intuitive display of the force of the drive unit frame,using the ANASY/Workbench plug-in to drive The frame and brake arm are structurally analyzed,and their strength and stiffness meet various performance indicators.After the prototype production was completed,the in-plant test and the downhole industrial test were carried out respectively,which verified that the main circuit and the auxiliary circuit of the locomotive can complete the expected walking,clamping and braking work in the actual working process.Based on the safety and reliability of the monorail locomotive,the design of the hydraulic system and the overall mechanical structure of the monorail locomotive is studied,which has certain reference value for the improvement after dispatching the monorail.更多还原