排种器试验台的结构改进

排种器试验台的结构改进

机械电气工程学院本科毕业设计(论文)题目：排种器试验台的结构改进设计

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摘要

精密播种机性能试验是农机测试的重要组成部分，也是研制和开发新型精密播种机不可缺少的重要环节。虽然田间试验可以客观、准确地反映机具的性能，但由于受地点、季节、设备等因素的影响,试验周期长，费用高。因此，播种机尤其是以排种器作为主要工作部件的试验通常是在实验室内进行，以加快试验进程，提高试验的方便性、可靠性和可重复性。对排种器试验台进行优化，是为了使排种器在实验室内能够更好地模仿在田间试验和作业的各种情况，以便将其调试到最适宜的工作状态，提高生产效率。

排种器是播种机的核心部件，排种器的排种性能好坏直接影响播种机的工作性能。排种器实验台是对排种器性能测试的主要手段,测试过程可以不受田间各种条件的限制，人为地创造各种工况，达到实际工作中的田间仿真，并且对排种器的性能及各主要参数进行深入广泛地试验研究，并提供可靠的设计依据。

关键词：精量播种排种器试验模拟

Abstract

Precision seeding agricultural performance test is an important part of the test as well as research and development of new precision seeder indispensable essential.Although the field experiment can be objectively and accurately reflect the performance of machinery,but because of the location,season,equipment and other factors,long test cycle,the high cost.Therefore,the planter in particular as the main working parts of the metering device in the laboratory test is usually carried out in order to expedite the trial process,to improve the convenience of test,reliability and repeatability.Metering device to improve the test-bed is to enable the metering device in the laboratory to better mimic in the field testing and operation of the various situations in order to debug the most appropriate working conditions and boost production efficiency.

Planter metering device is the core component,metering device performance of the seed planter a direct impact on performance.

Test metering device metering device is the main means of performance tests,the testing process can not field a variety of conditions,artificially creating a variety of working conditions on the performance of seed-metering device and the main parameters in-depth and extensive pilot study and provide a reliable basis for the design.

Keywords:Precision seeding Seed-metering Test Simulation

目 录

摘 要..........................................................................................................................

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1

Abstract ...........................................................................

2

一、JPS-12

排种器性能检测试验台 二、试验台的工作原理................................................................................................ 三、性能指标及技术规格............................................................................................ 1、型号说明........................................................................................................... 2、性能指标........................................................................................................... 3、基本技术规格................................................................................................... 四、一般技术数据及主要结构.................................................................................... 1、一般技术数据................................................................................................... 2、主要结构........................................................................................................... 2.1 机械结构部分............................................................................................... 2.2 电机............................................................................................................... 五、排种试验台............................................................................................................ 5.1 排种器试验台优化设计研究的目的和意义................................................. 5.2 国内精密排种的研究现状............................................................................. 5.3 存在问题.........................................................................................................

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4 4 5

5 5 5 6

6 7 8 8 8

8 9 9

5.4 国外精密排种的研究现状 ...................................................

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5.5 几种传统排种器的结构特点及存在问题 .................................................................................................

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5.5.1 结构特点 ..............................................................................................

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5.5.2

存在的问题 ......................................................................

12

六、排种试验台主要工作部件的设计 6.1 种床长度确定............................................................................................... 6.2 种带前进的速度确定................................................................................... 6.3 排种器速度的调整范围............................................................................... 6.4 基本参数计算............................................................................................... 6.4.1 滚筒尺寸和成穴器数目的确定............................................................. 6.4.2 电动机选择及计算电机功额定转矩..................................................... 6.4.3 链轮的选择............................................................................................. 6.5 仿形机构的设计........................................................................................... 6.5.1 仿形机构参数设计................................................................................. 7. 结论........................................................................................................................ 设计

心得及致

谢.....

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