ROPS DESIGN FOR OLDER TRACTORS

旧式拖拉机的 ROPS 设计

• 批准号: 2277782
• 负责人: PAUL D AYERS
• 金额: $ 9.05万
• 依托单位: COLORADO STATE UNIVERSITY
• 依托单位国家: 美国
• 财政年份: 1994
• 资助国家: 美国
• 起止时间: 1994-06-01 至 1997-05-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/2277782
• 关键词: agriculture worker; field study; injury prevention; mechanical stress; safety equipment; technology /technique development; user protection; vehicular accident; vibration

Tractor overturns are a major cause of agricultural-worker deaths each year. These deaths and serious injuries may have been prevented if the tractors had been equipped with a rollover protective structure (ROPS), and the operator was wearing a seat belt. NIOSH estimates that of the 4.61 million tractors utilized in the United States, 61 percent were manufactured before 1971. For many of these older tractors, ROPS are not available. If ROPS can be mounted to the axles of older tractors, then the control of this potential hazard can be attained. The objective of this project is to use ROPS testing simulations and laboratory and field testing of ROPS to develop suitable guidelines so that ROPS can be designed to be mounted on older tractors. The specific objectives are to: 1) Examine existing tractor surveys to identify the make and model number of older tractors currently in use in the United States. 2) Categorize the older tractors in terms of similar axle designs and define the major categories of older tractor axle designs. 3) Utilize Finite Element modelling to analyze each major category of axle design to determine the relative axle strengths and identify which major axle categories will support ROPS loadings. 4) Investigate axle and mounting modifications for each major axle category to allow ROPS to be mounted on older tractors. 5) Utilize laboratory and field testing to investigate ROPS design for the major axle categories of pre-ROPS tractors. Tests will be conducted in accordance with ASAE 5519. 6) Investigate vibrational loading of ROPS to examine fatigue failures on pre-ROPS tractor axles. 7) Develop guidelines for the design and mounting of ROPS on older tractors. The design guidelines will concentrate on axle housing support and mounting modifications and locations.

拖拉机翻车是农业工人死亡的主要原因， 年 这些死亡和重伤本来是可以避免的， 拖拉机已经配备了翻车保护结构（ROPS）， 操作员系着安全带 NIOSH估计， 4.61在美国使用的100万台拖拉机中，61%是 1971年以前生产的。对于许多这些较旧的拖拉机，ROPS不是 available. 如果ROPS可以安装在老式拖拉机的车轴上， 可以控制这种潜在的危险。 的目标 该项目是使用ROPS测试模拟和实验室和现场 测试 ROPS制定适当的指导方针，以便ROPS能够设计为 安装在老式拖拉机上 具体目标是： 1)检查现有的拖拉机调查，以确定品牌和型号 美国目前使用的老式拖拉机。 2)根据类似的车轴设计对老式拖拉机进行分类， 定义了老式拖拉机车轴设计的主要类别。 3)利用有限元建模分析各大类车轴 设计，以确定相对轴强度，并确定哪些主要 车轴类别将支持ROPS载荷。 4)调查每个主轴的轴和安装修改 允许ROPS安装在较旧的拖拉机上。 5)利用实验室和现场测试研究ROPS设计， 预ROPS拖拉机的主要车轴类别。 测试将在 符合ASAE 5519标准。 6)研究ROPS的振动载荷，以检查 预ROPS牵引车车轴。 7)制定在旧设备上设计和安装ROPS的指南 拖拉机. 设计指南将集中在桥壳的支持 以及安装修改和位置。