整体自装卸运输车液压系统双向平衡释放阀优化设计
2019-10-21张河宁,宋淼,段馨蕊
张河宁,宋淼,段馨蕊



摘 要:针对整体自装卸运输车液压系统的稳定性和安全性。液压系统为研究对象,提出一种液压系统双向平衡释放的设计方法。对整体自装卸运输车液压系统双向平衡释放进行设计计算,并完成相关液压元件选型,为液压系统实际应用提供了参考依据。
关键词:整体自装卸运输车;液压系统;双向平衡释放阀
中图分类号:U462.1 文献标识码:A 文章编号:1671-7988(2019)23-104-03
Optimum Design of Bidirectional Balanced Release Valve for Hydraulic System
of Integral Self-loading and Unloading Transport Vehicle
Zhang Haining, Song Miao, Duan Xinrui
( Beijing Sanxing Automobile Co., Ltd., Beijing 100000 )
Abstract: Aiming at the stability and safety of the hydraulic system of the integral self-loading and unloading truck. Hydraulic system is the research object. A design method of bidirectional balanced release of hydraulic system is proposed. This paper designs and calculates the bi-directional balanced release of the hydraulic system of the integral self-loading and unloading truck, and completes the selection of relevant hydraulic components, which provides a reference for the practical application of the hydraulic system.
Keywords: Integral self-loading and unloading truck; Hydraulic system; Bi-directional balanced release valve
CLC NO.: U462.1 Document Code: A Article ID: 1671-7988(2019)23-104-03
引言
随着现代运输业快速发展,装卸安全性是运输车辆的必然要求。整体自装卸运输车双向平衡释放阀取代传统的液压行程阀,实现托盘装载到位后将油缸卸荷,避免装卸机构结构件承受油缸的不利作用,简化管路连接,提高可靠性。完成快速应急卸载功能。实现对压力冲击的缓冲和过载压力的卸荷,使系统工作平稳,有效保护油缸和机构不会过载,保证系统的可靠性。提高自装卸式的自动化水平是新时期自装卸运输车的要求。
1 整体自装卸运输车液压系统双向平衡释放阀设计
整体自装卸运输车液压系统双向平衡释放阀,按其功能分为平衡系统和释放系统。其结构外观如图1所示。为保证系统稳定性好,该系统应用电液比例多路换向阀。可完成远程控制和无极调控。其原理图如图2所示。
平衡系统由单向功能,液控节流功能及溢流功能组成。主要控制油缸锁住回路,保持负载位置不变。负载按要求的速度平稳下降,控制下降速度。超過设定压力时,溢流功能开启,以免油缸超压损坏。……
