...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Biosystems Engineering >Development of stability indicators for dynamic Phase I overturn of conventional farm tractors with front axle pivot
【24h】

Development of stability indicators for dynamic Phase I overturn of conventional farm tractors with front axle pivot

机译：开发具有前轴枢轴的传统农用拖拉机动态I期倾覆的稳定性指标

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Tractor overturns are serious potential hazards for operators. While rollover protective structures (ROPS) protect operators passively, greater protection can be achieved through theoretical prediction of a potential overturn. Given effective warning, an operator can act to correct a tractor's motion when a tyre is about to lose contact with the ground. Such a loss of contact is associated with the initiation of a Phase I tractor overturn. However, it remains unclear how the initiation of tractor overturn is influenced by certain factors. Furthermore, the current mathematical models for tractors should be further extended for general utilisation. This study was conducted to develop stability indicators based on a more general model for dynamic Phase I tractor overturn. We considered practical tractor configurations and motion characteristics in a three-dimensional (3D) reference frame in formulating the mathematical model. Tractor stability indicators for overturn and sideslip were derived from force calculations. A parametric study was conducted using an example tractor. The tractor speed and slope angle were found to affect the overturning stability significantly. The coefficient of maximum static friction was found to be the main factor contributing to tractor sideslip. Critical tractor speeds for various ground conditions were identified by considering the zero values of the tractor stability indicators. The critical tractor speed was determined as a function of the maximum static friction and the slope angle. By providing a display device based on ergonomics principles, the results of this study can be further implemented in the form of guidance to operators. (c) 2015 IAgrE. Published by Elsevier Ltd. All rights reserved.
机译：拖拉机翻倒对操作员来说是严重的潜在危险。翻车保护结构（ROPS）可以被动地保护操作员，但可以通过理论预测潜在的倾覆来获得更大的保护。有了有效的警告，当轮胎即将与地面失去接触时，操作员可以采取行动纠正拖拉机的运动。这种接触的丧失与第一阶段拖拉机翻倒的开始有关。但是，尚不清楚拖拉机倾覆的开始如何受到某些因素的影响。此外，当前的拖拉机数学模型应进一步扩展以用于一般用途。进行这项研究的目的是基于动态I期拖拉机倾覆的更通用模型来开发稳定性指标。在建立数学模型时，我们在三维（3D）参考框架中考虑了实用的拖拉机配置和运动特性。推力和侧滑的拖拉机稳定性指标是通过力计算得出的。使用示例拖拉机进行了参数研究。发现拖拉机的速度和倾斜角度会显着影响倾覆稳定性。发现最大静摩擦系数是造成拖拉机侧滑的主要因素。通过考虑拖拉机稳定性指标的零值来确定各种地面条件下的临界拖拉机速度。确定拖拉机的临界转速是最大静摩擦和倾斜角的函数。通过提供基于人体工程学原理的显示设备，可以以对操作人员的指导形式进一步实施本研究的结果。 （c）2015年。由Elsevier Ltd.出版。保留所有权利。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号