4LZ-1200型收割機的割臺系統(tǒng)設(shè)計
 

[摘要]:我國是農(nóng)業(yè)大國，水稻生產(chǎn)機械化對水稻種植至關(guān)重要，水稻聯(lián)合收割機是實現(xiàn)水稻收割機械化的重要工具，而水稻聯(lián)合收割機小型化、微型化是在南方山區(qū)、丘陵地區(qū)實現(xiàn)農(nóng)業(yè)機械化的關(guān)鍵。因此，研究小型水稻聯(lián)合收割機具有重要的現(xiàn)實意義。
本文分析了現(xiàn)有的聯(lián)合收割機在南方山區(qū)、丘陵地區(qū)使用時存在的問題，對聯(lián)合收割機的偏心撥禾輪、往復式切割器、脫粒機的功率耗用作了較深的研究，研究開發(fā)具有自主知識產(chǎn)權(quán)的4LZ—1200型全喂入水稻聯(lián)合收割機。
首先，采用特殊的全喂入脫粒形式，將現(xiàn)有聯(lián)合收割機的割臺、輸送、脫粒機三大部分簡化一體，大大地簡化聯(lián)合收割機的結(jié)構(gòu)，從而使聯(lián)合收割機小型化、微型化。
在稻桿的夾持，輸送上做了大量的改進，將聯(lián)合收割輸送夾持鏈、脫粒夾持鏈簡化成一根鏈條完成，使夾持、輸送更加順暢，故障大大降低，工作效率有了較大的提高。
脫粒滾筒采用多頭不等距螺旋排列，使脫粒機的功耗降低，提高了谷物的脫凈率。
實驗證明，本文設(shè)計的4LZ—1200型全喂入水稻聯(lián)合收割機的各項性能指標均達到或超過了國家標準。

[關(guān)鍵詞]：全喂入水稻聯(lián)合收割機;撥禾機構(gòu);往復式切劑器;脫粒機

Design Cutting table of 4LZ-1200 Combine harvester
 

[ABSTRACT]The mechanization for harvesting rice crop products is very important in our country, a large agricultural country. The combine is one of main tools to achieve mechanization for harvesting rice crop product. In southern mountainous area and hilly area, the micro and mini combines play important role for harvesting grain products. So it is worth to study the mini combine.
In this paper, some existing problems with using combines in southern mountainous area and hilly area were analyzed. And the eccentric poking grain wheel, reciprocating cutter and the energy consumption of the thresher of the combine have been researched deeply. A 4LZ-1200 Entire-feed-carrier combine harvester with self-copyright for grain crop has also been studied.
Firstly, the three parts of the combine, cutting, transporting and threshing parts, were simplified into account by adopting special Entire feed carrier threshing style, and largely simplified the structure of the combine, thereby make it become micro and mini.
The largely improvement has been done in the clamp and transport of the crop poles, make the transport chains of clamping and threshing simplified into one chain, the clamp and transport become much more smoothly, the fault has been reduced prominently and the work efficiency has also a great improvement.
The working energy consumption can be reduced and the cleaning quotient of crop can be largely improved by adopting multi head and differing distance for helix in the threshing roller.
The experiment results showed that the target aim of 4LZ—1200 Entire-feed-carrier combine have been reached or even exceeded the national criterion. The product has gained the state patent.
[KEYWORDS] Full feeding rice combine harvester; reeling mechanism; reciprocating cutting agent; threshing machine

 
目錄
第一章 緒論 1
1.1全喂入水稻聯(lián)合收割機的現(xiàn)狀和發(fā)展趨勢 1
1.1.1水稻收獲機械的發(fā)展慨況 1
1.1.2國內(nèi)外全喂入水稻聯(lián)合收割機的現(xiàn)狀及發(fā)展趨勢 2
1.1.3在中國農(nóng)村現(xiàn)實經(jīng)濟條件下引進國外產(chǎn)品的困難 3
1.1.4國內(nèi)全喂入水稻聯(lián)合機的不足 3
1. 2小型全喂入水稻聯(lián)合收割機的研究意義…...…………………………………………………………………4
1.3課題研究的內(nèi)容和方法..…………………………………………………………………………………….5
第二章 往復式切割器割臺的分析 5
2.1引言 5
2.2往復式切割器 5
2.2.1雙刀距行程型切割器 6
2.2.2低割型切割器 6
2.2.3標準型切割器 6
2.2.4往復式切割器的構(gòu)造和標準化 7
2.3  4LZ-1200 型往復式切割器選用設(shè)計 7
第三章 往復式切割器割臺的設(shè)計 8
3.1割臺設(shè)計的方案分析 8
3.2往復式切割器的設(shè)計 8
3.3刀片幾何形狀的分析 9
3.4曲柄連桿(滑塊)機構(gòu)的割刀運動分析 11
3.5割刀慣性力的平衡 13
3.6本章小結(jié) 15
第四章 總結(jié) 15
參考文獻…………………………………………………………………………………………….……………...17