蒲统一 何家亮 邓全柱




摘要:YJH315型液力变矩器广泛应用于ZL30装载机和CPCD35液力叉车等工程车辆中,其同轴度精度直接影响着传动系统的使用寿命和可靠性。针对YJH315型液力变矩器,分析了其在生产过程中同轴度误差的产生原因及其控制方法,认为泵轮和前罩工件状态、总成焊机机械系统状态、泵轮和前罩的结构是影响变矩器同舟度的三个主要因素,为改进工艺和降低成本提供参考,同时提出可从突破高精度装配技术、高精度成型技术及高精度的机床控制技術三个方面保证变矩器同轴精度。
Abstract: YJH315 hydraulic torque converter is widely used in ZL30 loader, cpcd35 hydraulic forklift and other engineering vehicles. Its coaxiality accuracy affects the service life and reliability of the transmission system directly. Aiming at yjh315 hydraulic torque converter, this paper analyzes the causes of coaxiality error and its control methods in the production process. It is considered that the state of pump wheel and front cover workpiece, mechanical system state of assembly welding machine, structure of pump wheel and front cover are the three main factors affecting the coaxiality of torque converter and provides reference for improving process and reducing cost. At the same time, puts forward the breakthrough of high-precision assembly technology, high precision forming technology, high precision machine control technology ensure the coaxial accuracy of torque converter.
关键词:变矩器;液力叉车;同轴度;控制工程;高精度技术
Key words: torque converter;hydraulic forklift;coaxiality;control engineering;high precision technology
中图分类号:TH1 文献标识码:A 文章编号:1674-957X(2021)06-0046-02
0 引言
YJH315液力变矩器在传动系统中是发动机连接变速箱的中间纽带。YJH315型液力变矩器主要由前罩、涡轮、导轮和泵轮等几大部件组成,而弹性板通过螺栓固定在前罩上,所以该型液力变矩器的整体空间结构较为复杂,同轴度精度要求很高。若同轴度超差,将使得弹性板的螺栓孔周围受到交变应力的作用,加速弹性板的疲劳失效,降低使用寿命,更严重的将造成弹性板撕裂乃至整个传动系统失效,如何控制和保证同轴度的加工精度是YJH315液力变矩器制造过程中的一个重要问题。目前针对液力变矩器的研究主要集中在计算动力学及其仿真与实验研究上[1-3]。吴光强[4]等为了提高液力变矩器改型设计效率,通过变矩器流道三维流场仿真计算,并与试验数据进行了对比,研究结果为液力变矩器的优化设计提供了参考。……