帶式輸送機液壓張緊裝置設計

機械論文編號:JX232 所有圖紙,任務書.論文字數:41768.頁數:91

目    錄
1 概述 ....................................................................1
1.1 帶式輸送機張緊裝置的主要作用 .............................................1
1.2　張緊裝置的類型及發展現狀 ................................................2
1.3張緊裝置發展趨勢.......................................................... 6
2 整體方案的設計 .............................................................7
2.1主要設計要求.............................................................. 7
2.2方案的選擇................................................................ 7
2.3方案對比及確定 ............................................................9
2.4系統主要參數確定 ..........................................................12
3 液壓缸設計..................................................................12
3.1 液壓缸主要零部件結構、材料和技術要求 .....................................12
3.2密封圈、防塵圈的選用...................................................... 24
3.3液壓缸的類型和安裝形式 ....................................................24
3.4 耳軸的安裝 ...............................................................25
3.5液壓缸支架設計 ............................................................27
4 確定液壓泵及配套電機 .......................................................28
4.1 液壓泵的選用 .............................................................28
4.2電動機的選用.............................................................. 30
5 確定液壓系統元件、輔件 .....................................................31
5．1液壓系統中液壓元件選取 ...................................................31
5.2 確定液壓輔件 .............................................................35
6 液壓油路板的結構 ...........................................................43
7 液壓泵站設計............................................................... 46
7．1液壓泵站分類及特點....................................................... 46
7．2油箱極其輔件 .............................................................48
7.3液壓油箱的結構設計 ........................................................51
8 液壓工作介質的選用 .........................................................59
8．1對液壓工作介質的主要要求 .................................................59
8．2對液壓工作介質的選用..................................................... 61
9 液壓系統的安裝、使用和維護................................................. 61
9.1 液壓系統的安裝、試壓和調試 ...............................................61
9.2 試壓................................................................. 67
9.3 調試.................................................................. 67
9.4 保養.................................................................. 68
9.5維護................................................................... 69
9.6液壓系統常見故障診斷與排除 ................................................70
9.7本裝置的安裝與使用操作 ....................................................71
結論 .......................................................................73
參考文獻................................................................... 74
附錄 ......................................................................75
英文原文................................................................... 75
中文譯文 ...................................................................82
致  謝................................................................ ... 91

摘   要

     張緊裝置是帶式輸送機不可缺少的部分，是影響輸送帶動張力的主要部件之一，它直接關系到帶式輸送機的安全運行及使用壽命，對于大運量、長距離等大型帶式輸送機的正常運行而言尤為重要。
本帶式輸送機液壓張緊裝置的設計是在吸收國、內外輸送機張緊技術的基礎上，根據國內帶式輸送機的運行特點及要求研制的一種新型液壓張緊裝置。采用比例控制技術及可靠性較高的可編程控制技術，可以對張緊力進行多點控制，根據不同工作情況隨時調節張緊力的大小。自動實現在膠帶機在啟動時提供較大張力（約為正常運行時張力的1.5倍），正常運行時較小張力。使膠帶在工作過程中有科學合理的張力，即防止了膠帶啟動時打滑，又可使膠帶機正常運行不在過緊狀態。利用該裝置可以延長膠帶的壽命，大大節約輸送機的運行成本。本設計中，利用滑輪機構增大了張緊行程，避免使用行程較長的液壓缸，減少了制造液壓缸的難度。液壓系統中采用蓄能器，可以最大限度的吸收液壓沖擊，減小對負載變化對膠帶的沖擊，提高膠帶的使用壽命。

關鍵詞：帶式輸送機；液壓張緊裝置；自動控制;

Abstract

       The stretching device is the belt conveyer essential part, is affects the transportation to lead one of tensity major components, its direct relation belt type conveyer's safe operation and the service life, speaking of the great transportation amount, the long distance and so on large-scale belt conveyer's normal operation especially important.
This belt conveyer hydraulic pressure stretching device's design is in the absorption country, the inside and outside conveyers tighten in the technical foundation, according to domestic belt conveyer's movement characteristic and request development one kind of new hydraulic pressure stretching device. Uses the proportional control technology and the reliability high programmable control technology, may carry on the multi-spot control to the tensioning force, momentarily adjusts the tensioning force according to the different working condition the size. Realizes automatically in the adhesive tape machine when the start provides the big tensity (approximately for normal operation when tensity 1.5 times), when normal operation small tensity. Enables the adhesive tape to have the science reasonable tensity in the work process, namely prevented the adhesive tape started when to slip, might also cause the adhesive tape machine normal operation not at the tight condition. May lengthen adhesive tape's life using this equipment, saves conveyer's run cost greatly. In this design, increased using the pulley organization has tightened the traveling schedule, avoided using the traveling schedule long hydraulic cylinder, reduced has made hydraulic cylinder's difficulty. In the hydraulic system uses the accumulator, may the absorption line shock maximum limit, reduce to the variation of load to the adhesive tape the impact, enhances adhesive tape's service life.

Key words: Belt-type conveyer, full automatic hydraulic tension station , proportional control, programmable control