摘要
水利水电工程中的进水口单轨拦污清污系统,由于其轨道中心位置固定不变,产生了启闭机或清污机功能单一的问题,针对该问题,从拦污系统和清污系统两个方面进行了系统性研究,应用偏心原理,设计了带偏心结构的液压清污耙斗,建立了其重心位置方程式并给定了吊点的位置范围,使液压耙斗在开耙和闭耙时产生不同方向的偏心矩并加以利用,设计了拦污栅及导栅的参考结构,介绍了进水口单轨拦污清污系统及清污机的组成,结合工作过程,说明了拦污栅垂直布置工程中清污机启闭拦污栅和清污的过程及实现方法。理论和3个典型加设清污机改造工程实践表明,偏心矩、导栅和水流的共同作用,可使单轨清污机实现不同工况下的吊点偏移,在拦污栅垂直布置的工程中实现多种功能,通过荷重传感器等的保护作用,限定斜拉角度在10°以内,可保证不同工况下的作业安全,对工程设计或改造具有良好的借鉴意义。
In water resources and hydropower projects,the rail center of the mono-rail trash rack and cleaning system at the water inlet is fixed,which leads to the problem of single function of the hoist or trash-cleaning machine.In response to this problem,a systematic study is conducted from two aspects:trash rack system and cleaning system.Using the principle of eccentricity,a hydraulic grab bucket with comb tooth type with an eccentric structure is designed,and its center of gravity position equation is established and the position range of the lifting point is given,generating eccentric moments in different directions during the opening and closing of hydraulic grab bucket with comb tooth type and utilizing them.Reference structure of the trash rack and guide rack is designed,and the composition of the mono-rail trash rack and cleaning system at the inlet and the monorail multifunctional trash-cleaning machine are introduced.Combined with the working process,the process and implementation method of the trash-cleaning machine opening and closing the trash rack and cleaning in the vertical layout of the trash rack project are explained.Theoretical analysis and three typical trash-cleaning machine retrofitting projects show that,under the combined action of eccentric moment,guide rail,and water flow,the mono-rail trash-cleaning machine can achieve lifting point displacement under different working conditions.In projects where the trash rack is vertically arranged,multiple functions can be achieved.Through the protective effect of load sensors,the inclined angle is limited to within 10°,ensuring safe operation under different working conditions.It has good reference significance for engineering design or renovation.
作者
陈佛生
彭昭辉
Chen Fosheng;Peng Zhaohui(Guangdong Construction Machinery Plant Co.,Ltd.,Guangzhou 510635,China)
出处
《机电工程技术》
2024年第10期143-147,151,共6页
Mechanical & Electrical Engineering Technology
基金
广东建工集团科技创新立项基金项目(2021-P18)。
关键词
水利水电工程
拦污清污系统
拦污栅
单轨多功能清污机
重心偏移
water resources and hydropower projects
trash rack and cleaning system
trash rack
mono-rail multifunctional trash-cleaning machine
center of gravity shif
