液牵引采煤机工程实现

发布时间：2018-06-21 06:19

本文选题：液压牵引 + 采煤机　；参考：《昆明理工大学》2015年硕士论文

【摘要】：煤炭是我国主要能源之一,为增强煤矿开采能力,能够研制高效安全的煤矿开采设备一直是煤矿机械制造商追求的目标。根据牵引动力不同,采煤机可分为机械牵引、电牵引以及液压牵引采煤机三种大类,与机械牵引和电牵引的采煤机相比,液牵引的采煤机具有液压元件布置方式灵活,调速范围广,能够实现过载保护和性价比较高等特点,在中小规模煤矿中广为应用,是煤矿机械制造商较为关注的煤矿机械。在中国有着丰富的煤炭资源储备,但是不同矿区煤矿条件(包括硬度以及煤层厚度等)存在差异,且大多数矿区地势较为复杂,基于上述条件,太重煤机有限公司生产的MG150/375-W型液牵引采煤机采用多电机横向布置结构,这种结构的特点在于避免了因锥齿轮换向而引起的机械传动效率低下的缺点。截割电机最大功率可以达到200kW,能够实现一机多型(即200采煤机、375采煤机以及575采煤机),从而可以适应我国不同硬度以及厚度煤层的煤矿开采工作。而通过对摇臂外形的改造,实现了左右摇臂可互换性的特点,大大增强了采煤机的经济性以及降低了对摇臂维修、零件更换的难度。对于液压牵引系统中调高部分的改进,也使得采煤机在工作过程中更趋向于自动化生产模式,有效提高了采煤机生产效率,降低了人力劳动。本文主要研究内容有：对整机参数(包括生产率、截深、滚筒直径、机面高度、采高、调高范围、卧底量、牵引速度、牵引力、截割速度以及装机功率)进行计算分析。进行MG150/375-W型液牵引采煤机主要组成部分(左右摇臂、左右牵引传动箱,液压传动箱,电气控制箱,调高油缸,左右截割滚筒以及各种辅助元件)的设计和生产,设计过程中应保证各个零部件在安全完成工作的同时具有一定的经济性与互换性。对摇臂的外形结构进行改进与生产,生产任务包括铸造工艺以及热处理工艺的确定。并对摇臂在工作过程中可能出现的问题进行评估、排除。对牵引传动部分进行设计,并对牵引传动部分在工作过程中可能出现的问题进行故障排除。对液压牵引部分进行元件选型以及布置方式设计,并对过往容易产生安全隐患的部分进行改进、调试工作,制定日常维护准则,并对在出厂试验已经出现的问题以及工作过程中可能出现的问题进行故障排除。最终设计出一套完整的、调速范围广并且有一定过载保护功能的液压传动部分对截割滚筒以及其余各种辅助元件进行确定,并制定运输、检修计划。综上所述,该液牵引采煤机有一定的通用性可以借鉴。
[Abstract]:Coal is one of the main energy sources in China. In order to enhance the ability of coal mining, it is always the goal of coal machinery manufacturers to develop high efficiency and safety coal mining equipment. According to the different traction power, the shearer can be divided into three types: mechanical traction, electric traction and hydraulic traction shearer. Compared with the shearer with mechanical traction and electric traction, the hydraulic traction shearer has flexible arrangement of hydraulic components. The speed regulation is widely used in medium and small scale coal mines, which can realize overload protection and high performance-to-price ratio. It is a kind of coal mine machinery which is paid more attention to by coal mining machinery manufacturers. There are abundant coal reserves in China, but there are differences in coal mining conditions (including hardness and coal seam thickness, etc.) in different mining areas, and the topography of most mining areas is more complex. The MG150 / 375-W hydraulic traction shearer produced by Taizhong Coal Machine Co., Ltd. adopts a multi-motor transverse arrangement structure, which is characterized by avoiding the shortcoming of low mechanical transmission efficiency caused by bevel gear commutation. The maximum power of cutting motor can reach 200kW, which can realize a multi-type shearer (I. E. 200 shearer F375 shearer and 575 shearer), which can adapt to the coal mining work of different hardness and thickness coal seam in our country. By modifying the shape of the rocker arm, the interchangeability of the left and right rocker arm is realized, which greatly enhances the economy of the shearer and reduces the difficulty of repairing the rocker arm and replacing the parts. The improvement of the higher part of the hydraulic traction system also makes the shearer more inclined to the automatic production mode in the working process, which effectively improves the production efficiency of the shearer and reduces the labor force. The main research contents of this paper are as follows: the whole machine parameters (including productivity, cutting depth, drum diameter, face height, mining height, height range, undercover quantity, traction speed, traction force, cutting speed and mounting power) are calculated and analyzed. The design and production of the main components of MG150 / 375-W hydraulic shearer (left and right rocker arm, left and right traction transmission box, hydraulic transmission box, electrical control box, high oil cylinder, left and right cutting drum and various auxiliary components) are carried out. In the process of design, it is necessary to ensure that each part has certain economy and interchangeability while completing the work safely. The shape and structure of rocker arm are improved and produced. The production tasks include casting process and heat treatment process. And to the rocker arm in the work process may appear the question to carry on the appraisal, eliminates. Design the traction transmission part and troubleshoot the possible problems in the working process of the traction transmission part. For the hydraulic traction part of the selection of components and layout design, and easy to produce safety risks in the past parts of the improvement, debugging work, the formulation of routine maintenance guidelines, And troubleshooting the problems that have already appeared in the factory test and the problems that may appear in the working process. Finally, a complete set of hydraulic transmission with wide speed range and certain overload protection function is designed to determine the cutting drum and other auxiliary components, and to formulate the transportation and maintenance plan. To sum up, the hydraulic traction shearer can be used for reference.
【学位授予单位】：昆明理工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TD421.6

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