往復式防竄倉給料機

機械論文編號:JX327  所有圖紙,外文翻譯。論文字數:28238.頁數:92
目    錄

第一章 緒論 .........................................................1
1.1 往復式給煤機的發展歷史 ...........................................1
1.2 往復式給煤機的用途 ...............................................2
1.3 往復式給煤機的組成及工作原理 .....................................2
1.4 往復式給煤機的特點............................................... 3
1.5 往復式防竄倉給煤機設計目的....................................... 4
第二章往復式給煤機整體設計 ..........................................5
2.1　往復式給煤機整體結構尺寸的確定.................................. 5
2.1.1給煤機箱體尺寸的確定 ............................................5
2.1.2給煤機整體結構布局.............................................. 6
2.2給煤機的受力分析 ..................................................6
2.2.1 往復式給煤機的運行阻力......................................... 6
2.2.2 產生運行阻力的因素及力的計算 ...................................6
2.3 曲柄連桿機構的運動分析........................................... 9
2.4  電機選型........................................................ 10
2.5  減速器選型...................................................... 11
2.6　聯軸器選型 ......................................................13
2.7 托輥軸的設計計算 .................................................16
2.7.1  整體布局...................................................... 16
2.7.2 托輥軸的設計與校驗............................................. 16
第三章防竄倉執行元件的設計.......................................... 23
3.1　液壓系統方案設計 ................................................23
3.1.1　負載分析 ......................................................23
3.1.2　液壓系統方案設計.............................................. 24
3.2 液壓缸的結構設計 .................................................25
3.2.1 初選液壓缸的工作壓力 ...........................................26
3.2.2 缸筒的計算與驗算 ...............................................26
3.2.3液壓缸進、出油口尺寸............................................ 29
3.2.4缸底厚度計算 ....................................................29
3.2.5活塞桿的穩定性驗算 ..............................................30
3.2.6 液壓缸的其它結構尺寸 ...........................................31
3.2.7 液壓缸的性能參數 ...............................................32
3.2.8 液壓缸的主要零部件............................................. 33
第四章防竄倉泵站的設計 ..............................................38
4.1　泵站的分類與特點 ................................................38
4.2　本系統的泵站設計................................................ 38
4.2.1　液壓系統圖的擬定 ..............................................38
4.2.2　液壓泵的選型 ..................................................39
4.2.3　泵站電機的選型 ................................................41
4.2.4　聯軸器的選型.................................................. 42
4.2.5  蓄能器的選型............................................... ...43
4.2.6　液壓元件的選型 ................................................49
4.2.7　油箱的設計計算 ................................................54
4.2.8  管件............................................... ...........55
第五章　往復式給煤機的使用、安裝、維護、發展趨勢 .....................58
5.1 往復式給煤機使用中存在的問題 .....................................58
5.2 往復式給煤機的改進 ...............................................58
5.3 往復式給煤機的安裝 ...............................................59
5.4 往復式給煤機的維護 ...............................................59
5.5往復式給煤機的發展趨勢............................................ 62
結  論 ...............................................................64
參考文獻............................................... ..............65
附  錄............................................................... 66
翻譯部分 .............................................................72
英文原文 .............................................................72
中文譯文 .............................................................83
致  謝 ...............................................................89

摘    要

      往復式給煤機安裝在煤倉下口處，在煤礦井下生產中，設置一定容量的煤倉對于保證消峰平谷和高產、高效是十分必要的。它可以有效地提高工作面采掘設備的利用率，充分發揮運輸系統的潛力，保證連續均衡生產。但是，煤倉竄倉事故在我國煤礦經常發生，僅淮北礦業集團所屬各煤礦每年就有十幾起甚至幾十起竄倉事故發生。竄倉事故常造成設備嚴重損壞，井下停產，當竄倉煤量較大時，還會阻塞巷道，造成運輸巷通風不暢，引起瓦斯爆炸等事故。為避免 竄倉的發生，研制了一種帶有防竄倉裝置的往復式給煤機，替代現在使用的給煤機，保障運輸系統和裝載系統正常、有序運行，使系統各環節協調一致。
    研制防竄倉裝置的最終目的是控制給煤機閘門，使其能在竄倉發生時非常快地關閉，減少水煤流量，以防止和降低竄倉所造成的對人身安全和運輸系統的危害。為此，防竄倉裝置應能滿足兩個工作狀態，一是給煤機正常工作時對閘門位置的控制，以達到對給煤機給煤量的控制和煤倉中有水時對竄倉事故的預防;二是在竄倉發生時能立即檢測到并控制防竄倉裝置快速關閉閘門，在竄倉得到有效控制后，可適當調整閘門開度，使倉中的水煤按一定的控制流量排出。防竄倉 裝置由動力傳動系統和機械執行機構組成，對其性能，要求在正常工作時，能方便地控制防竄倉閘門在任一位置的開度;而在水煤竄倉時，要求系統有快速的響應和動作，防止水煤竄倉
造成大的危害。另一方面，由于給煤機蛔室空間有限，就要求防竄倉裝置結構要簡單、體積要小，而且動力部分的布置要靈活，在操作上能進行遠距離控制。

關鍵詞：煤倉竄倉；給煤機；防竄倉裝置

Abstract

      Reciprocating to the installation of the coal bunker under mouth, in mine production, setting of a certain capacity of the coal bunker for ensuring consumer-Pinggu and high-yield, high-efficiency is very necessary. It can be effective in improving the face of mining equipment utilization, and give full play to the potential of the transport system to ensure continuous production balanced. However, the coal bunker channeling warehouses in China coal mine accidents occur frequently. only Huaibei Mining Group owned the mine will annually dozen or even several dozens of warehouses with channeling the accident occurred. Channeling warehouse accidents often caused serious damage to equipment, downhole production, warehouse when channeling coal volumes, but also blocked roadway, Transport roadway caused poor ventilation caused the gas explosion accident. To avoid channeling warehouse, developed a warehouse with anti-channeling devices to the reciprocating coal, alternative to the current use of coal, protect transportation systems and loading system to normal in an orderly fashion, allowing the system to link all coordinated.
Development of anti-channeling devices warehouses The ultimate aim is to control the gate to the coal machine, it can be made at the time of channeling positions very quickly to shut down, Coal reduce water flow to prevent and reduce channeling warehouses caused by the personal safety of the transport system and the harm. To this end, anti-channeling devices warehouse should satisfy two working state, first, to the coal normal working hours to control the location of the gate, to achieve the right to coal to the volume of coal and control bunker with water right channeling warehouse accident prevention; two warehouses in channeling at the time immediately detect and control the anti-channeling devices warehouse closure of the gates fast, effective channeling warehouse control, can be properly adjusted gate opening, the store coal by water must flow control discharges. Anti-channeling devices from warehouses powertrain and mechanical implementation bodies, their performance requirements in the normal working hours, easy access to control anti-channeling the warehouse gate in an open position; Coal and water channeling warehouses, System requirements of a rapid response and action to prevent gas and water channeling warehouses caused severe harm. The other hand, as the coal feeder roundworm room is limited, requires anti-channeling devices warehouse structure should be simple, small size, and dynamic part of the layout to be flexible and can operate in remote control.

Keywords : channeling bunker positions; Coal; Anti-channeling devices warehouse