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dredging grab
相关语句
  疏浚抓斗
     Research on 1m 3 Inland Waterway Hydraulic Dredging Grab
     1m~3内河液压疏浚抓斗的研究
短句来源
     At present, the working efficiency of dredging grab even all garb is low in our country, the dredging rate of bulk grab is 1.5 to 1.6, but it can reach about 2.0 in abroad.
     而实际上,目前我国的疏浚抓斗甚至是整个抓斗行业,挖掘效率都不高,散货抓斗的抓取比最大的也就是1.5~1.6,国外的可以达到2.0左右;
短句来源
     This paper presents the research background of 1m 3 inland waterway hydraulic dredging grab,discusses the physical properties of grabbed object and excavating mechamism in accordance with the object.
     简括了1m3内河液压疏浚抓斗的研究背景,探讨了抓取对象的物理性质及针对该对象的挖掘机理。
短句来源
     Research and simulation on dredging grab
     疏浚抓斗的研究与仿真
短句来源
     The simulation and optimization is based on a 36t dredging grab, the basic data come from regular design, its basic mode is "simulation-optimization-simulation".
     挖掘仿真和抓斗优化是以36t疏浚抓斗的常规经验设计为基础进行的,基本思路是“仿真—优化—再仿真”。
短句来源
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  相似匹配句对
     Research and simulation on dredging grab
     疏浚抓斗的研究与仿真
短句来源
     Design of the Dredging System for the 8m~3 Grab Dredger
     8m~3抓斗挖泥船挖泥系统设计
短句来源
     Ecological Dredging of Sediments
     底泥生态疏浚研究概况
短句来源
     3.Optimum dredging.
     3.优化疏浚;
短句来源
     OPPORTUNITIES ARE NOT HARD TO GRAB
     机会不一定难得
短句来源
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This paper presents the research background of 1m 3 inland waterway hydraulic dredging grab,discusses the physical properties of grabbed object and excavating mechamism in accordance with the object.On the basis of the mechanism,excavating resistance calculation is described.The whole process of work ,such as model grab experiment,computer modelling excavating software compilation,real grab test and its service effect,is also given. The basis of the whole process is the research in view...

This paper presents the research background of 1m 3 inland waterway hydraulic dredging grab,discusses the physical properties of grabbed object and excavating mechamism in accordance with the object.On the basis of the mechanism,excavating resistance calculation is described.The whole process of work ,such as model grab experiment,computer modelling excavating software compilation,real grab test and its service effect,is also given. The basis of the whole process is the research in view of excavating object.Here it shows the differerce between the dredged soil and the general bulk on physical mechanical propertices, the difference of the dredging bulk between the horizontal cutting resistance and vertical cutting resistance.Model experiment is used for testing the correctness of the theory and the important link of detecting the real grab properties,providing the important parameter that the real gsal designing needs. The computer software drawn up on the basis of theorectical research and model experiment is a strong means for designing the same type of grab. Real test results of the grab are given by some charts.

简括了1m3内河液压疏浚抓斗的研究背景,探讨了抓取对象的物理性质及针对该对象的挖掘机理。在此基础上进行了挖掘阻力计算,并介绍了模型斗试验、计算机模拟挖掘软件编制、实斗测试及使用效果的整个工作过程。对挖掘对象的研究是整个研究工作的基础,本文指出了疏浚土壤与通常散货在物理机械性能方面的不同,并由此产生在计算水平切割阻力与垂直切割阻力和普通散货的不同之处。模型实验是为了验证理论的正确性和预测实物性能的重要环节,同时也提供了实物设计所需的重要参数。在理论研究和模型试验基础上编制的计算机软件包是设计同类型抓斗的有力工具。本文还通过若干图表介绍了该斗的实测结果。

At first,the working situation of the dredging grab is analyzed. The main difference between the dredging grab and the bulk cargo grab on land is found out. The model of dredging materials referring to terrene mechanics is established and the cut-in forces and their resistances are provided, which are different from the bulk cargo grab on land in character and quantity, thus, the mechanics model of the dredging process is established. Then the dredging curve function...

At first,the working situation of the dredging grab is analyzed. The main difference between the dredging grab and the bulk cargo grab on land is found out. The model of dredging materials referring to terrene mechanics is established and the cut-in forces and their resistances are provided, which are different from the bulk cargo grab on land in character and quantity, thus, the mechanics model of the dredging process is established. Then the dredging curve function is computed and simulated on the basis of mechanics model. The dredging depth, the total dredging volume and the mass of the grab are obtained. In addition, the dredging curve is made and the effect of clinging force and tine is found out as well. At last some conclusions are drawn,which are expected to be helpful to the engineer's real design.

首先对疏浚抓斗的工况进行分析,找出其与陆上散货抓斗的主要不同之处,结合土力学知识建立疏浚物料的模型,得到疏浚抓斗的各组在性质和数量上都不同于陆上散货抓斗的挖掘力和挖掘阻力,进而建立疏浚抓斗挖掘过程的力学模型。其次,在力学模型的基础上,通过数学推导建立抓斗刃口的曲线轨迹方程,运用计算机编程进行挖掘过程仿真,得出各个开度下的挖掘深度,求出总的抓取物料体积和总的抓取量,并绘出挖掘曲线,得出泥沙粘聚力和斗齿对挖掘的影响。最后,在研究仿真的基础上得出几点结论,以期能对工程设计人员的实际生产设计有所帮助。

 
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