【正文】 .......................... 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 通常帶式輸送機是固定式的，但是由于煤礦工作面經常移動，若采用傳統(tǒng)的帶式輸送機就會造成極大的不便和浪費。 根據(jù)給定的參數(shù)設計并計算選用可伸縮帶式輸送機的標準零部件構 成 輸送機的整機，在張緊裝置中采用了液壓自動調整裝置，并進行了主要零部件的強度校核。 國內外帶式輸送機發(fā)展現(xiàn)狀及趨勢 帶式輸送機，總體上，我國帶式輸送機整體技術水平比國外大約落后 10～15年。 帶式輸送機多點驅動技術方面：盡管國內順槽可伸縮帶式輸送機輸送距離較短，但其多點驅動的同步 性至今還沒有得到很好解決，而國外帶式輸送機中間驅動技術已日趨完善，中間驅動點可達 4～ 5個以上， 單機輸送距離長達[7]。輸送帶接頭強度：我國皮帶接頭強度為母帶的 50%～ 65%，國外可達母帶的 70%～ 75%。 （ 2） DX 型 鋼 繩 芯 帶 式 輸 送 機 它屬于高強度帶式輸送機，其輸送帶的帶芯中有平行的細鋼繩，一臺運輸機運距可達幾公里到幾十公里。一般把垂直側擋邊作成波狀，故稱為波狀帶式輸送機，這種機型適用于大傾角，傾角在 30176。 可伸縮帶式輸送機的 工作原理 及應用 可伸縮 帶式輸送機主要由以下部件組成：頭架、驅動裝置、傳動滾筒、 儲帶裝置、 尾架、托輥、中間架 、 卸載裝置、清掃裝置、 張緊裝置 等 組成 。 其結構原理如圖 11所示，輸送帶繞經傳動滾筒和尾部滾筒形成無極環(huán)形帶，上下輸送帶由托輥支承以限 制輸送帶的撓曲垂度，拉緊裝置為輸送帶正常運行提供所需的張力。單點驅動方式按傳動滾筒的數(shù)目分，可分為單滾筒和雙滾筒驅動。該方案驅動部主要有以下設備組成 :電動機、聯(lián)軸器、液力偶合器、減速機、驅動滾筒等組成，如圖 21所示。 絞 車拉緊裝置可以是手動的和電動的。在可伸縮帶式輸送機中將絞車作為輸送帶的儲帶工作機構。