On the basis of all the above analysis and research , an experimental analogical device to test the balancing valve circuit of the hydraulic water gate has been firstly adopted 在上述各种分析、研究的基础上，首次采用模拟实验装置对启闭机平衡阀回路进行了实验研究。
Analysis , comparison and discussion for technical requirement of cylinder - key hydraulic component used in the hydraulic water gate of the three gorges project are presented in the paper 论文对三峡枢纽工程中液压启闭机的关键元件? ?油缸的技术要求进行了分析、对比和论述。
Throughout analysis of all results and characteristics from the analog experiment , the paper firmly reaches the conclusion for stability of the balancing valve circuit 论文根据模拟实验的各种结果、曲线进行了分析、描述，给出了肯定的三峡枢纽工程中液压启闭机平衡阀回路的稳定性结论。
The device sends out various random disturbance signals to the balancing valve circuit of the hydraulic system for the radial head check gate operating at the worst condition by using a computer 模拟实验装置根据工况最为恶劣的弧门启闭机液压系统的平衡阀回路制作，采用计算机随机给出各种干扰控制信号。
From the study , some available measures for lowering the holding force of the gate are obtained and the related parameters for determining the capacity of the gate lifter are put forward as well 分析了模型试验的相似性问题，然后对影响闸门持住力的几个要素分别进行了分析和验证，从而获得了能降低闸门持住力的几种可行性措施，并给出了确定启闭机容量的有关参数。
The oem tasc will focus its support on oems , system integrators and control panel builders who have customers in the material handling , hvac , pump , crane and hoist , packaging , elevator / escalator and transportation wash industries 该oem技术和解决方案中心将重点支持原始设备制造商、系统集成商和控制面板制造商，这些制造商的客户分布于材料处理、 hvac 、水泵、起重机和启闭机、包装、电梯/自动扶梯及运输洗涤行业。
Based upon the present regulation , the design and construction check and structure strength check , the electric power generation water inlet anchor gate crane platform ' s hydro - engineering structure of fushui power plant were conducted and an analysis for the reasons of building structure fracture was carried out 摘要进行了富水电厂发电进水口闸门启闭机平台安全检测，依据现行规?对其建筑物进行了设计与施工复核、结构的强度复核和建筑物的裂缝成因分析。
Problems in using screw - crane in fields and water resources engineering were analysed with examples of engineering project . based on this , a method was presented . by using double - hook screw - crane and connecting two screw - cranes by an intermediate bearing and a gear coupling , the problem of inefficiency in door - closing was solved . the double - hook screw - crane could work synchronously 以具体工程为例，在分析了螺杆启闭机在农田水利工程中应用时存在的问题及原因的基础上，提出采用双吊点螺杆启闭机，用中间轴与齿轮联轴器把2台螺杆启闭机连接起来的方法，成功地解决了单吊点启闭机闭门力不足的问题，实现了双吊点螺杆启闭机工作时的同步
The thesis analyzed the development of the gate ' s hoist and its controlsystem , and the localization of the gate ' s operating machine ' s traditional hydraulic system , according to today ' s control technique , especially the characteristics of the profibus fieldbus , the thesis put forward the project that " the gate supervise controlling system base on the profibus control and ethernet technique " , according to that project , completed plc control procedure and the procedure of the supervise and control ( supervise and control software and man - machine interface ) , at last the thesis set up a ethernet network for the monitor and the plc correspondence of a place of honor machine and plc and a fieldbus network for the far i / o mold and the plc , made the gate supervise and control by network 文章对闸门启闭机及其控制系统的发展状况和传统液压启闭机控制系统的局限性进行了详细分析，并结合当前控制技术，特别是profibus现场总线控制技术的特点，针对所研究的水电站的实际情况提出了“基于profibus现场总线控制和以太网技术的闸门监控系统”的技术方案。并根据该方案完成了下位机( plc控制程序)的编制和上位机(监控软件和人机界面的组态)的组态。最后通过组建上位机与plc的通信以太网络和远程i o模块与plc之间的总线网络，实现了整个闸门监控系统的网络化。
Chapter two ascertains main technological factor of dong gou lock reconstructing , including forecast the cargo and volume through the lock to reason about representative type of vessel designed for through the lock and its operation organize . chapter three design the renovate engineering through ascertaining the main technological factor scale of the lock , dimension , designed water level and altitude , including design of structure of the lock , lock chamber and lock gate , and select the main technological factor and pattern of headstock gear . chapter four draws a comprehensive compare of the two design scheme of the renovate project with engineering project economy evaluation method , and makes out the recommended scheme , and furthermore , to calculate the economic evaluation index of the recommended scheme and makes the economic sensitivity analysis of the scheme and finally demonstrate economic feasibility of the scheme 本论文共分四章：第一章主要介绍了原东沟船闸的地理位置和营运现状，说明了船闸在航道建设和水资源综合利用中的作用及东沟船闸改造的必要性；第二章东沟船闸改造的主要技术因素确定其中包括东沟船闸过闸货种和货运量发展的预测，并确定东沟船闸的设计代表船型及营运组织；第三章东沟船闸改造工程设计本章通过船闸改造工程主要技术参数：船闸规模、尺度、设计水位和高程等的确定，设计了二个船闸改造方案，包括钢筋混凝土整体坞式闸首结构、闸室和闸门的设计，并选定了启闭机的主要技术参数和型式；第四章采用了工程项目经济评估方法对东沟船闸改造工程二个设计方案进行全面综合比较后，确定了推荐方案。
