本文選題：齒形鏈 + 雙節(jié)距齒形輸送鏈��； 參考：《吉林大學》2013年博士論文

【摘要】：我國工業(yè)發(fā)展迅速，汽車的生產(chǎn)與需求都大幅上升，一輛汽車的產(chǎn)出，往往需要經(jīng)過上萬道工序，組成的幾百條流水線來完成的。鏈式輸送機廣泛用于汽車裝配流水線的輸送工作，現(xiàn)有輸送機上的輸送鏈均為滾子鏈，隨著對輸送機可靠性、同步性和環(huán)境友好性要求的提高，滾子輸送鏈的自身特點制約著鏈式輸送機的進一步發(fā)展，亟需研究新型輸送鏈系統(tǒng)來提高幾百條流水線上鏈式輸送機的同步性、可靠性和環(huán)境友好性。本文通過分析輸送鏈對輸送機性能的影響和齒形鏈的性能，提出了雙節(jié)距分時嚙合齒形輸送鏈，并開展了雙節(jié)距分時嚙合齒形輸送鏈系統(tǒng)各部件參數(shù)的數(shù)學建模、嚙合分析、可靠性和環(huán)境友好性的研究。 以應(yīng)用齒形鏈在鏈式輸送機上為目標，提出了雙節(jié)距分時嚙合齒形輸送鏈，雙節(jié)距分時嚙合齒形輸送鏈鏈板的設(shè)計特點，雙倍節(jié)距是在嚙合節(jié)圓上雙倍節(jié)距，每個鏈板上分布三個齒，中間齒廓和一、三齒廓的外齒廓為直線齒廓，一、三齒廓的內(nèi)齒廓為外凸的曲線齒廓。雙節(jié)距分時嚙合齒形輸送鏈與單倍節(jié)距相同的外嚙合齒形鏈相比，以單倍節(jié)距為15.875mm，，鏈輪齒數(shù)45為例，每節(jié)相同片數(shù)的鏈條，每米自重降低了24.6%，根據(jù)雙節(jié)距分時嚙合齒形輸送鏈鏈條—鏈輪—鏈輪加工刀具的相關(guān)耦合參數(shù)，設(shè)計了直線齒廓雙節(jié)距分時嚙合齒形輸送鏈鏈輪和負變位漸開線齒廓雙節(jié)距分時嚙合齒形輸送鏈鏈輪，建立了漸開線齒廓雙節(jié)距分時嚙合齒形輸送鏈鏈輪負變位系數(shù)的數(shù)學模型，對與負變位漸開線齒廓雙節(jié)距分時嚙合齒形輸送鏈鏈輪相嚙合的雙節(jié)距分時嚙合齒形輸送鏈鏈條進行了參數(shù)修正。針對工程實際，設(shè)計了適用于雙節(jié)距分時嚙合齒形輸送鏈鏈式輸送機的張緊裝置。 對雙節(jié)距分時嚙合齒形輸送鏈系統(tǒng)的嚙合理論進行了系統(tǒng)的研究，雙節(jié)距分時嚙合齒形輸送鏈緊邊嚙入過程在一個嚙合周期內(nèi)分為三個階段：隨著鏈輪的轉(zhuǎn)動外凸的內(nèi)齒廓與鏈輪接觸嚙合、轉(zhuǎn)化為相鄰鏈節(jié)的外齒廓嚙合和中間齒廓嚙合定位。對雙節(jié)距分時嚙合齒形鏈進行了假想坐標系的建立，利用坐標變換理論進行雙節(jié)距分時嚙合齒形輸送鏈緊邊嚙入過程中一個嚙合周期的數(shù)學建模。通過對雙節(jié)距分時嚙合齒形輸送鏈系統(tǒng)的運動學和動力學分析，得出雙節(jié)距分時嚙合齒形輸送鏈系統(tǒng)的速度、加速度的變化和雙節(jié)距分時嚙合齒形輸送鏈鏈式輸送機在不同輸送方式下，鏈條承載的數(shù)學模型。把雙節(jié)距分時嚙合齒形輸送鏈鏈條的緊邊簡化成無質(zhì)量的弦線連接的一組離散質(zhì)量系統(tǒng)，求出雙節(jié)距分時嚙合齒形輸送鏈系統(tǒng)緊邊的固有頻率。 根據(jù)雙節(jié)距分時嚙合齒形輸送鏈鏈條和直線齒廓雙節(jié)距分時嚙合齒形輸送鏈鏈輪的設(shè)計參數(shù)進行實體建模，以單倍節(jié)距為15.875mm，鏈輪齒數(shù)45為例，建立了雙節(jié)距分時嚙合齒形輸送鏈系統(tǒng)的運動學模型和嚙合沖擊模型，動態(tài)的模擬了雙節(jié)距分時嚙合齒形輸送鏈系統(tǒng)的嚙合過程，對雙節(jié)距分時嚙合齒形輸送鏈和雙節(jié)距滾子輸送鏈進行對比仿真，仿真結(jié)果顯示，雙節(jié)距分時嚙合齒形輸送鏈系統(tǒng)的緊邊鏈條波動降低59%、瞬間接觸力最大值只是雙節(jié)距滾子輸送鏈系統(tǒng)的51.9%。 利用封閉力流鏈式試驗臺對雙節(jié)距分時嚙合齒形輸送鏈系統(tǒng)和雙節(jié)距滾子輸送鏈系統(tǒng)進行噪聲和磨損伸長的對比試驗，以單倍節(jié)距為15.875mm，鏈輪齒數(shù)45為例。試驗結(jié)果顯示，與雙節(jié)距滾子輸送鏈系統(tǒng)相比，在轉(zhuǎn)速為200rpm，載荷為2kN時，雙節(jié)距分時嚙合齒形輸送鏈的噪聲降低2dB，隨著轉(zhuǎn)速的增加，噪聲差值明顯增大；在轉(zhuǎn)速為300rpm，載荷為2kN時，250小時的磨損伸長試驗，試驗結(jié)果顯示磨損伸長率僅為雙節(jié)距滾子輸送鏈的46%，因此雙節(jié)距分時嚙合齒形輸送鏈系統(tǒng)提高了鏈式輸送機的可靠性和環(huán)境友好性。 根據(jù)研究成果申請了發(fā)明專利“雙節(jié)距分時嚙合齒形鏈鏈板”，專利號：201110233079.9；授權(quán)公告號：CN102287483B。 本文在總裝備部“CDX01項目鏈傳動系統(tǒng)降噪”的資助和支持下，對鏈式輸送機進行研究，在深入分析雙節(jié)距分時嚙合齒形輸送鏈的嚙合理論的基礎(chǔ)上，提出了雙節(jié)距分時嚙合齒形輸送鏈系統(tǒng)的設(shè)計方法，并對單倍節(jié)距為15.875mm，鏈輪齒數(shù)為45的雙節(jié)距分時嚙合齒形輸送鏈系統(tǒng)進行了設(shè)計計算、仿真分析及試驗研究。
[Abstract]:The paper analyzes the influence of conveyor chain on conveyor performance and the performance of chain conveyor , and proposes a new conveyor chain system to improve the synchronism , reliability and environmental friendliness of chain conveyor .

This paper presents a mathematical model of the chain - chain sprocket with the same number of teeth as the chain wheel and the negative displacement involute tooth profile when the double pitch is equal to that of the chain - sprocket - sprocket machining tool .

In this paper , the meshing theory of meshing tooth - shaped conveying chain system with double pitch is studied . The meshing period of meshing tooth - shaped conveying chain is divided into three stages in one meshing cycle .

The kinematic model and meshing impact model of meshing tooth - shaped conveying chain system with double pitch are modeled by solid modeling . The kinematic model and meshing impact model of meshing tooth - shaped conveying chain system with double pitch are simulated . The simulation results show that the fluctuation of the tight - edge chain of meshing tooth - shaped conveying chain system is reduced by 59 % and the maximum instantaneous contact force is only 51.9 % of the double - pitch roller conveyor chain system .

The results show that when the speed is 200rpm and the load is 2kN , the noise of the meshing tooth - shaped conveying chain is reduced by 2dB when the rotation speed is 200 rpm and the load is 2kN , and the noise difference is obviously increased with the increase of the rotating speed .
The test results show that the wear elongation is only 46 % of the double - pitch roller conveyor chain when the rotation speed is 300rpm and the load is 2kN . The test result shows that the wear elongation is only 46 % of the double - pitch roller conveyor chain . Therefore , the double - pitch - time meshing tooth - tooth chain system improves the reliability and environmental friendliness of the chain conveyor .

According to the research results , the invention discloses a double - pitch time - sharing mesh tooth - shaped chain plate of the invention , which is patent no . : 20111023 3079.9 ;
Authorization Publication No . : CN102287483B .

In this paper , under the financing and support of the " CDX01 Project Chain Drive System Noise Reduction " of the General Armament Dept . , the chain conveyor is researched . Based on an in - depth analysis of the meshing theory of the meshing tooth - shaped conveying chain with double pitch , the design method of the double - pitch - time - meshing tooth - tooth conveying chain system is put forward , and the design calculation , simulation analysis and test research are carried out on the double - pitch meshing tooth - shaped conveying chain system with a single - time pitch of 15.875mm and a sprocket tooth number of 45 .

【學位授予單位】：吉林大學
【學位級別】：博士
【學位授予年份】：2013
【分類號】：TH132.45

【參考文獻】

相關(guān)期刊論文 前10條

1 李光布;輸送機非線性動力學的研究及其對動態(tài)性能的影響(英文)[J];Journal of Southeast University(English Edition);2004年01期

2 藤木章,前川幸^

本文編號：1852916