【正文】 r 3 Calculation of transmission part of the design ..................................... 9 Retractable belt conveyor system................................................................... 9 Extensible Belt and working conditions of the original parameters .......... 10 Determination of the bandwidth......................................................... 10 Accounting conveyor belt width ........................................................ 12 Circle drive ................................................................................................... 13 Formula .............................................................................................. 13 Calculation of the main resistance ..................................................... 14 Calculation of the main special resistance ......................................... 16 Additional special resistance calculation............................................ 17 Calculation of tilt resistance ............................................................... 18 Calculation of transmission power ............................................................... 19 Shaft power calculation ...................................................................... 19 Motor power calculation .................................................................... 19 Calculation of belt tension ........................................................................... 20 Check of belt sag degree .................................................................... 20 Conveyor belt does not slip conditions .............................................. 21 Calculation of driving drum ......................................................................... 24 V Determine the tensile force driving pulley ......................................... 24 Cylinder sizes ..................................................................................... 24 Calculation of cylinder thickness ....................................................... 25 Cylinder strength and the drum .......................................................... 25 Design and Calculation of drive roller shaft ...................................... 27 Synthesis of bending and torsion stress check by the intensity axis 30 Hydraulic tensioning device for ponent selection and calculation ........ 31 Calculation of tension force and tighten travel .................................. 31 Hydraulic circuit design and work process analysis .......................... 32 Determination of the ponents ...................................................... 33 Determination of hydraulic oil ........................................................... 34 Selection and calculation of hydraulic pump ..................................... 34 Determination of motor ...................................................................... 35 Chapter 4 Design of the main parts conveyor ...................................................... 36 Motor Selection ............................................................................................ 36 Selection of reducer...................................................................................... 37 Fluid coupling and coupling selection ......................................................... 37 Check brake and equipment ......................................................................... 38 Roller ............................................................................................................ 39 The role and type of roller .................................................................. 39 Calculation of roller ........................................................................... 40 The rated load roller ........................................................................... 42 Bend conveyor ............................................................................................. 44 Conveyor Belt choice: .................................................................................. 45 Storage with a storage structure design ........................................................ 45 Tensioning device ......................................................................................... 46 Tensioning device in use shall meet the requirements ..................... 46 The type of tensioning device ............................................................ 46 Selection of tensioning device............................................................ 47 Device Bracket ........................................................................................... 48 First frame ........................................................................................ 48 Middle frame .................................................................................... 49 VI Tensioning device ....................................................................................... 49 Conclusion ................................................................................................................... 51 Thanks ...................................................................................................................... 52 References ................................................................................................................ 53 1 第 1 章 緒 論 選題的目的和意義 通常帶式輸送機(jī)是固定式的，但是由于煤礦工作面經(jīng)常移動(dòng)，若采用傳統(tǒng)的帶式輸送機(jī)就會(huì)造成極大的不便和浪費(fèi)。 此次 進(jìn)行了可伸縮帶式輸送機(jī)的整體結(jié)構(gòu)設(shè)計(jì)， 并 確定 給出了該輸送機(jī)主要 零部件結(jié)構(gòu) 參數(shù)及其計(jì)算方法。 根據(jù)給定的參數(shù)設(shè)計(jì)并計(jì)算選用可伸縮帶式輸送機(jī)的標(biāo)準(zhǔn)零部件構(gòu) 成 輸送機(jī)的整機(jī)，在張緊裝置中采用了液壓自動(dòng)調(diào)整裝置，并進(jìn)行了主要零部件的強(qiáng)度校核。所以應(yīng)該考慮使用易于拆裝，靈活伸縮的可伸縮式帶式輸送機(jī)。 國內(nèi)外帶式輸送機(jī)發(fā)展現(xiàn)狀及趨勢(shì) 帶式輸送機(jī)，總體上，我國帶式輸送機(jī)整體技術(shù)水平比國外大約落后 10～15年。盡管國內(nèi)順槽可伸縮帶式輸送機(jī)輸送距離較短，但其多點(diǎn)驅(qū)動(dòng)的同步 性至今還沒有得到很好解決。 帶式輸送機(jī)多點(diǎn)驅(qū)動(dòng)技術(shù)方面：盡管國內(nèi)順槽可伸縮帶式輸送機(jī)輸送距離較短，但其多點(diǎn)驅(qū)動(dòng)的同步 性至今還沒有得到很好解決，而國外帶式輸送機(jī)中間驅(qū)動(dòng)技術(shù)已日趨完善，中間驅(qū)動(dòng)點(diǎn)可達(dá) 4～ 5個(gè)以上， 單機(jī)輸送距離長(zhǎng)達(dá)[7]。國外同類產(chǎn)品已經(jīng)廣泛采用了自控張緊技術(shù)，較好地解決了這