主办：陕西省汽车工程学会
ISSN 1671-7988  CN 61-1394/TH
创刊：1976年
汽车实用技术

汽车实用技术 ›› 2025, Vol. 50 ›› Issue (13): 49-53.DOI: 10.16638/j.cnki.1671-7988.2025.013.009

• 设计研究 • 上一篇    

某物流车紧急制动跑偏分析及解决

黄旺，张翔，易绍志，陈正超   

  1. 中车时代电动汽车股份有限公司 技术中心
  • 发布日期:2025-07-11
  • 通讯作者: 黄旺
  • 作者简介:黄旺（1997－），男，工程师，研究方向为汽车底盘设计

Analysis and Solution of Emergency Braking and Deviation of a Certain Logistics Vehicle

HUANG Wang, ZHANG Xiang, YI Shaozhi, CHEN Zhengchao   

  1. Technology Center, CRRC Electric Vehicle Company Limited
  • Published:2025-07-11
  • Contact: HUANG Wang

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摘要： 某物流车在紧急制动工况下出现制动左跑偏现象，向左偏出车道中心 1.5 m。经过优化 调整转向拉杆与钢板弹簧的纵扭运动干涉量，重新装车试验验证，向左偏出 0.25 m，在可接 受标准范围之内，解决了整车紧急制动跑偏问题。通过多次试验可总结出悬架系统钢板弹簧 纵扭干涉是导致制动跑偏的重要因素，经过计算与试验论证，得出紧急制动工况下，纵扭干 涉量小于 2 mm，纵扭角小于 6°，整车不会出现紧急制动跑偏的危险工况。文章建立了一种 评价转向拉杆与钢板的弹簧的运动干涉量的计算方法来评价转向系统与悬架系统匹配的优劣 程度，为整车的转向悬架布置提供一定参考。

关键词: 物流车；制动跑偏；钢板弹簧；运动干涉

Abstract: A certain logistics vehicle deviated to the left during the emergency braking condition, veering 1.5 m out of the center of the lane to the left. After optimizing and adjusting the longitudinal torsional motion interference between the steering tie rod and the leaf spring, and reloading the vehicle for test verification, it deviated 0.25 m to the left, which is within the acceptable standard range, solving the problem of the vehicle's emergency braking deviation. Through multiple tests, it can be concluded that the longitudinal torsional interference of the leaf springs in the suspension system is an important factor leading to braking deviation. After calculation and experimental verification, it is concluded that under the emergency braking condition, the longitudinal torsional interference amount is less than 2 mm and the longitudinal torsional angle is less than 6°, and the entire vehicle will not have the dangerous condition of emergency braking deviation. The article establishes a calculation method for evaluating the motion interference quantity of the spring between the steering tie rod and the steel plate to assess the degree of matching between the steering system and the suspension system, providing a certain reference for the layout of the steering suspension of the entire vehicle.

Key words: logistics vehicle; brake deviation; leaf spring; motion interference