农用履带行走装置研制

doi:10.13733/j.jcam.issn.2095-5553.2023.12.014

摘要/Abstract

摘要： 针对农用履带拖拉机行走装置在湿软土壤易下陷、行走阻力较大等的问题，结合现有农用履带行走装置结构，以实际工作环境为对象，采用底盘高度二个极限位置阻力与接地比压计算分析及实验验证的手段，对履带式行走装置关键机构改进，得出底盘离地高度及履带倾斜角度等姿态与液压拉杆伸出位移之间的关系模型，分析不同接地比压条件下的履带前进阻力。由田间试验与混凝土场地试验可知，田间作业底盘高且履带接地长度为1 450mm，接地比压低，减少机子下陷量；混凝土场地或硬路面移动行驶底盘低，履带接地长度最短900mm，履带接地面积小，转弯阻力减少641%。能够更好地满足及适应农用履带拖拉机的实际工作需要。

关键词: 农用履带, 行走装置, 接地比压, 离地高度, 行走阻力

Abstract: Aiming at the problems such as easy subsidence and large walking resistance of agricultural crawler tractor walking device in wet and soft soil, combining with the existing structure of agricultural crawler walking device and taking the actual working environment as the object, the key mechanism of crawler walking device is improved by means of calculation, analysis and experimental verification of two limit position resistance and ground specific pressure of chassis height. The relationship model between the stance of chassis and track tilt Angle and the extension displacement of hydraulic tie rod is obtained, and the forward resistance of track under different ground pressure conditions is analyzed. Field test and concrete field test show that the field operation chassis is high and the track grounding length is 1450mm, the grounding ratio is low, and the machine subsidence is reduced. The concrete field or hard road surface has a low driving chassis, the shortest track grounding length is 900mm, the track grounding area is small, and the turning resistance is reduced by 64.1%. It can better meet and adapt to the actual work needs of agricultural crawler tractors.

Key words: agricultural crawler, walking device, ground specific pressure, height from the ground, running resistance

中图分类号:

S232

熊永森, , 斯剑勇, 谢小兵, 丁肇, , 王金双, , 张灵华. 农用履带行走装置研制[J]. 中国农机化学报, 2023, 44(12): 87-91.

Xiong Yongsen, , Si Jianyong, Xie Xiaobing, Ding Zhao, , Wang Jinshuang, , Zhang Linghua. Development of agricultural crawler walking device[J]. Journal of Chinese Agricultural Mechanization, 2023, 44(12): 87-91.

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