重载自卸车平衡悬架推力杆紧固性能研究
2021-11-03范学琼杨银辉王伟李骥刘盼
范学琼 杨银辉 王伟 李骥 刘盼
摘 要:推力杆总成在多轴商用车上普遍使用,作为后悬架系统关键总成之一,影响车辆的经济性、行驶安全性及操纵稳定性;本文针对推力杆的紧固性能,提出防松垫片和增加被联接件厚度两种提升方案,并进行了试验分析;基于试验分析数据结合使用经济性,最终确定增加被联接件厚度即套筒及长螺栓的方案为优选方案。本文的研究对重载自卸车推力杆螺栓防松提供依据和借鉴。
关键词:平衡悬架 I型推力杆 紧固性能 摩擦系数 重载自卸车
The Research About Fastening Property Of Heavy Dump Truck Balanced Suspension Trust Rod
Fan Xueqiong,Yang Yinhui,Wang Wei,Li Ji,Liu Pan
Abstract:The thrust rod assembly, one of the most critical part of rear-suspension system, is widely used in commercial multi-axle vehicles, which impacted greatly on vehicles economics, driving safety, and controlling stability. To estimate the fastening property of thrust rod, the article has tested and analyzed two programs, posting lock shim and making the junction thicker. What the article concluded was to make the junction thicker would be the obvious choice, which was based on the tests figures and economics. The main findings of the research would be a point of reference for increasing the fastening property of the heavy dump truck balanced suspension thrust rod.
Key words:balanced suspension, I-rod, fastening property, friction coefficient, heavy dump truck
1 引言
重载自卸车在工程建设中发挥着重要的作用,一般在工地道路、矿坑道路等恶劣工况中使用。重载自卸车悬架系统承受重力,侧向力外,还要承受车辆扭曲、振动、冲击等复杂工况下的各种力。后悬架推力杆作为关键总成之一,影响车辆的经济性、行驶安全性及操作稳定性等;关键部位的紧固性能提升能提高抗力矩衰减性能,降低因紧固件失效引起的其他零部件破坏及经济损失,确保车辆可靠性和行驶安全性。用户运载货物的不确定性及运营路况的复杂性,推力杆连接部位良好的紧固性能是首要考虑的。
2 平衡悬架推力杆结构型式及应用
为了保证6×4、8×4等多轴车每個车轮能与地面保持良好的接触,避免因个别车轮悬空而造成其他车轮的超载引起车辆的不安全,多轴车常采用双轴平衡悬架[1]。平衡悬架系统结构组成见图1;该结构主要由平衡……
