發(fā)布時間：2018-06-21 06:19

  本文選題：液壓牽引 + 采煤機��； 參考：《昆明理工大學》2015年碩士論文

【摘要】：煤炭是我國主要能源之一,為增強煤礦開采能力,能夠研制高效安全的煤礦開采設備一直是煤礦機械制造商追求的目標。根據牽引動力不同,采煤機可分為機械牽引、電牽引以及液壓牽引采煤機三種大類,與機械牽引和電牽引的采煤機相比,液牽引的采煤機具有液壓元件布置方式靈活,調速范圍廣,能夠實現過載保護和性價比較高等特點,在中小規(guī)模煤礦中廣為應用,是煤礦機械制造商較為關注的煤礦機械。在中國有著豐富的煤炭資源儲備,但是不同礦區(qū)煤礦條件(包括硬度以及煤層厚度等)存在差異,且大多數礦區(qū)地勢較為復雜,基于上述條件,太重煤機有限公司生產的MG150/375-W型液牽引采煤機采用多電機橫向布置結構,這種結構的特點在于避免了因錐齒輪換向而引起的機械傳動效率低下的缺點。截割電機最大功率可以達到200kW,能夠實現一機多型(即200采煤機、375采煤機以及575采煤機),從而可以適應我國不同硬度以及厚度煤層的煤礦開采工作。而通過對搖臂外形的改造,實現了左右搖臂可互換性的特點,大大增強了采煤機的經濟性以及降低了對搖臂維修、零件更換的難度。對于液壓牽引系統(tǒng)中調高部分的改進,也使得采煤機在工作過程中更趨向于自動化生產模式,有效提高了采煤機生產效率,降低了人力勞動。本文主要研究內容有：對整機參數(包括生產率、截深、滾筒直徑、機面高度、采高、調高范圍、臥底量、牽引速度、牽引力、截割速度以及裝機功率)進行計算分析。進行MG150/375-W型液牽引采煤機主要組成部分(左右搖臂、左右牽引傳動箱,液壓傳動箱,電氣控制箱,調高油缸,左右截割滾筒以及各種輔助元件)的設計和生產,設計過程中應保證各個零部件在安全完成工作的同時具有一定的經濟性與互換性。對搖臂的外形結構進行改進與生產,生產任務包括鑄造工藝以及熱處理工藝的確定。并對搖臂在工作過程中可能出現的問題進行評估、排除。對牽引傳動部分進行設計,并對牽引傳動部分在工作過程中可能出現的問題進行故障排除。對液壓牽引部分進行元件選型以及布置方式設計,并對過往容易產生安全隱患的部分進行改進、調試工作,制定日常維護準則,并對在出廠試驗已經出現的問題以及工作過程中可能出現的問題進行故障排除。最終設計出一套完整的、調速范圍廣并且有一定過載保護功能的液壓傳動部分對截割滾筒以及其余各種輔助元件進行確定,并制定運輸、檢修計劃。綜上所述,該液牽引采煤機有一定的通用性可以借鑒。
[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.
【學位授予單位】：昆明理工大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TD421.6

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本文編號：2047563