利用最佳峰值电流追踪消除泵送流量损失的实验研究(英文)  

The Experimental Study of Using Best Current Peak to Track the Pumping Flow Loss

作　　者：郭锐[1,2,3] 赵静一[1,2,3] 王永昌[1] 李伟[1] 严二冬[1] 

机构地区：[1]燕山大学河北省重型机械流体动力传输与控制重点实验室 [2]河北秦皇岛066004 [2]燕山大学先进锻压成形技术与科学教育部重点实验室,河北秦皇岛066004 [3]流体动力与机电系统国家重点实验室,河北秦皇岛066004

出　　处：《机床与液压》2012年第24期119-124,共6页Machine Tool & Hydraulics

基　　金：National Natural Science Foundation of China(51175448);sponsored by Natural Science Foundation of Hebei Province(E2012203071);Foundation of The State Key Laboratory of Fluid Power transmission and Control(GZKF-201103);Science and technology research and development project of Qinhuangdao(201101A138)

摘　　要：针对混凝土喷射机组在输送混凝土换向瞬间存在泵送流量损失的情况,通过实验分析了引起泵送流量损失的原因,提出利用最佳峰值电流追踪泵送流量损失的解决方案,建立了数学模型,并通过大量实验进一步验证了模型的正确性,在工程实际中消除了混凝土喷射在换向瞬间的间歇现象,保障了施工质量,所得结论对相关施工机械的电液控制系统工作性能的改善有指导意义。Pumping flow loss will cause spraying without concrete at the main pump reversing moment. It leads to the uneven gunite concrete, the dropping of supporting strength, the delay of construction period. In allusion to the instantly pumping flow loss at the main pump reversing moment, this text analysis the cause of pumping flow loss by experiment, puts forward the solution of using best current peak to track the pumping flow loss and establishes the mathematical model. The paper verifies the correctness of the model through a number of experiments. The import of this model in the engineering practice eliminates the intermittent phenomenon at reversing moments and guarantees the construction quality. The conclusions have guiding significance for the improvement of electro-hydraulic control system related to construction machinery.

关 键 词：混凝土喷射机组 流量损失 峰值电流 喷射速度 

分 类 号：TU64[建筑科学—建筑技术科学]