工程车辆自动变速的基本原理  

Basic Principle of Automatic Speed Adjustment of Construction Vehicles

作　　者：赵丁选[1] 

机构地区：[1]吉林大学

出　　处：《工程机械》2006年第9期27-30,共4页Construction Machinery and Equipment

基　　金：博士学科点基金资助项目(20020183003);国家自然科学基金资助项目(59705005)

摘　　要：工程车辆一边工作一边行走,工作装置的功率输出要占到发动机功率的相当大一部分,最大时可占到60%以上,并且波动很大,这一特点决定了工程车辆的自动变速不能照搬路面交通车辆自动变速的原理。通过理论推导和试验,研究出了比较适合工程车辆使用的“3参数”与“4参数”自动变速原理“。3参数”自动变速技术适用于工作液压泵功率较小或液压泵的载荷工作时基本没有波动的工程车辆。对于工作液压泵功率较大和液压泵载荷工作时经常波动的工程车辆宜采用“4参数”自动变速技术。Construction vehicles operate as they travel. Power outputs of work devices occupy a significant part in engine's power: its maximum could be above 60% and is sometimes in large fluctuation. This feature determines that the automatic speed control of construction vehicles shouldn't copy the principles of that in road transportation vehicles. Through theory derivation and test, a 'three parameters' and 'four parameters' automatic speed adjustment principles are studied. 'Three parameters' automatic speed adjustment is suitable to the construction vehicles with low power work pumps or the pumps' loads represent almost no fluctuation during operations. For construction vehicles with higher work pumps power or frequent load fluctuation on the pumps during operation, 'four parameters' of automatic speed adjustment technology is more suitable.

关 键 词：工程车辆 自动变速 液力机械传动 

分 类 号：TU603[建筑科学—建筑技术科学]