履带式再生稻收获机田间转弯机理和性能试验

doi:10.13229/j.cnki.jdxbgxb.20211178

摘要/Abstract

摘要：

为进一步探究履带式再生稻收获机的田间转弯性能，对转弯半径与窄履沉陷量的关系进行了全面分析。主要分析了再生稻收获机田间转弯的基本原理，对窄履驱动力、滑移率、窄履沉陷量以及行驶阻力进行了计算，使用Recurdyn分析获得转弯半径与窄履沉陷量的函数关系。仿真结果表明：随着转弯半径的增大，两侧驱动轮转矩、窄履沉陷量均减小，驱动轮转矩从5835 N·m减小到672.3 N·m，驱动轮转矩、窄履沉陷量峰值均处于转弯半径为0处。通过田间试验对仿真结果的可靠性进行验证，结果表明：随着转弯半径的增大，沉陷量从186.24 mm减小到103.57 mm，试验现象和计算结果均与Recurdyn仿真吻合，证明仿真结果可靠，该研究可为后期再生稻收获机转弯理论研究提供参考。

关键词: 农业机械化工程, 再生稻, 窄履, 转弯半径, 沉陷量, 虚拟样机

Abstract:

In order to further explore the turning performance of ratooning rice harvester in the field， the relationship between turning radius and narrow track subsidence was comprehensively analyzed. The basic principle of field turning of tracked ratooning rice harvester was analyzed， and the driving force， slip rate， track subsidence and driving resistance of narrow track were calculated. The functional relationship between turning radius and narrow track subsidence was obtained by RecurDyn analysis. The simulation results show that with the increase of the turning radius， the driving wheel torque and narrow track subsidence on both sides decrease. The driving wheel torque deceased from 5835 N·m to 672.3 N·m. The peak values of driving wheel torque and narrow track subsidence were at the turning radius of 0. The reliability of the simulation results was verified by field experiments， the results show that with the increased of turning radius， the subsidence decreased from 186.24 mm to 103.57 mm. The experimental phenomena and calculation results were consistent with the RecurDyn simulation， proving the simulation results are reliable. This study can provide a reference for the turning theory research of ratooning rice harvester in the later period.

Key words: agricultural mechanization engineering, ratooning rice, narrow track, turning radius, subsidence, virtual prototype

中图分类号:

S225.4

刘伟健,罗锡文,曾山,文智强,曾力. 履带式再生稻收获机田间转弯机理和性能试验[J]. 吉林大学学报(工学版), 2023, 53(9): 2695-2705.

Wei-jian LIU,Xi-wen LUO,Shan ZENG,Zhi-qiang WEN,Li ZENG. Field turning mechanism and performance test of crawler reclaimed rice harvester[J]. Journal of Jilin University(Engineering and Technology Edition), 2023, 53(9): 2695-2705.

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参数	数值	参数	数值
整机尺寸（长×宽×高）/（mm×mm×mm）	4870×2500×2960	接地长度/mm	1873
履带宽度/mm	280	驱动轮半径/mm	194.5
割台宽度/mm	2000	轨距/mm	1600
履齿节距/mm	90	作业速度/ （m·s^-1）	0~2.5
履刺高度/mm	29	整机质量/kg	2950
重心高度/mm	875	液压系统结构	双泵双马达

序号	转弯半径R/mm	内侧驱动轮转速 n₁/（r·min^-1）	外侧驱动轮转速n₂/（r·min^-1）	速度或角速度/ （m·s^-1）或（rad·s^-1）	外侧驱动轮转矩M₁/（N·m）	内侧驱动轮转矩M₂/（N·m）	窄履沉陷量Z₁/mm	仿真结果Z/mm
1	0	90.31	93.12	0.59	5678.73	5736.84	186.24	211.87
2	800	0	98.20	0.38	2843.30	2143.54	174.65	186.11
3	2 840	17.43	96.65	0.28	2760.43	2030.30	160.82	174.87
4	3 130	24.64	97.75	0.26	2480.46	1790.39	159.32	170.28
5	4 120	32.16	94.23	0.18	2365.32	1643.54	156.40	168.97
6	7 440	47.18	96.56	0.14	2065.45	1264.54	150.31	164.77
7	11 350	63.18	93.67	0.10	1570.56	1020.35	145.54	156.12
8	21 720	77.42	94.67	0.07	1254.80	978.53	130.47	141.87
9	30 150	84.93	96.38	0.04	1045.65	884.65	116.47	124.32
10	∞	101.81	99.17	1.37	738.73	753.32	103.57	111.39

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