• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Agricultural Safety and Health >An investigation of three physical parameters of PTO entanglements
【24h】

An investigation of three physical parameters of PTO entanglements

机译：PTO纠缠的三个物理参数的研究

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

The PTO driveline is the most common means of transferring power from a tractor to towed machinery and stationary equipment. While equipment manufacturers install shielding to protect operators and bystanders from coming in contact with operating PTO components (particularly around the knuckle), entanglement is still a cause of some of the most catastrophic agricultural work-related injuries. This study investigated the influence of material type, material length, and angle of material introduction on entanglements with a spinning PTO shaft knuckle. These variables were tested using a laboratory PTO apparatus where 165 entanglements were recorded during the 720 trials conducted. The results indicate that lighter materials, such as cotton thread, have a significantly higher probability of becoming entangled than heavier materials, such as leather bootlaces. Materials that were longer (i.e., extend further below the midline of the PTO knuckle) have higher probabilities of becoming entangled than do shorter materials. The horizontal path that the material traveled across the centerline of the PTO shaft impacted the probability of entanglement. When the angle of intersection of the horizontal path of travel relative to the centerline of the PTO shaft is 90 degrees, or close to 90 degrees, a higher probability of entanglement occurs. All 165 entanglements occurred on the downward rotational side of the PTO knuckle regardless of which side the horizontal path of travel started from. The results of this study provide the first look at understanding the physical phenomena associated with the initial stages of PTO entanglements and set the stage for future research.
机译：PTO传动系是将动力从拖拉机传递到被牵引的机械和固定设备的最常用方法。尽管设备制造商安装了防护罩以保护操作员和旁观者免于接触操作中的PTO组件（尤其是在转向节周围），但是缠结仍然是一些与农业工作最灾难性的伤害原因。这项研究调查了材料类型，材料长度和材料引入角度对旋转的PTO轴节的缠结的影响。使用实验室PTO设备测试了这些变量，在进行的720次试验中记录了165个缠结。结果表明，较轻的材料（例如棉线）比较重的材料（例如皮革鞋带）更容易缠结。与较短的材料相比，较长的材料（即，在PTO指关节中线下方延伸得更远）具有更高的缠结概率。材料横穿万向传动轴中心线的水平路径影响了缠绕的可能性。当水平行进路径相对于万向传动轴中心线的相交角为90度或接近90度时，发生纠缠的可能性就更高。不管165行进的水平路径从哪一侧开始，所有165个缠结都发生在PTO转向节的向下旋转侧。这项研究的结果使我们首次了解了与PTO纠缠初期有关的物理现象，并为以后的研究奠定了基础。

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