| During the "13th Five-Year Plan" period,China accelerated the construction of the "West to East Power Transmission" UHV Project,increased the scale of the power grid from "eight communications and seven direct lines" to "eight communications and ten direct lines",and invested in the construction of the world’s ultra-high altitude and super difficult power transmission and transformation project--the Ali and Tibet Central Power Grid Networking Project.In order to solve the problems of heavy workload and difficult environment in the operation,maintenance and maintenance of UHV transmission towers in remote mountainous areas and high alpine areas,as well as the needs of reducing the labor intensity of workers in the power transportation and inspection industry and improving the operation safety,it is urgent to accelerate the research and development of tower climbing equipment.In the background of enterprise demand,this paper,based on the high strength aluminum alloy track produced by Switzerland HSS(High Step Systems),carries out the research and manufacture of the domestic high-altitude climbing equipment,because the foreign climbing products it represents cannot meet the large demand of the UHV engineering of China’s power grid.The equipment adopts modular design.It is mainly composed of four parts:the control module,the pillar module,the power module and the guidance system module.The main research work and achievements of this paper are as follows:(1)The working principle,solutions and product performance characteristics of various kinds of transmission tower climbing equipment at home and abroad are comprehensively analyzed,and the design and development scheme of a new high tower climbing equipment is put forward,and the overall scheme,function module and transmission scheme are studied.(2)Using Solid Works software to carry out three-dimensional finite element modeling for climbing equipment,to ensure the accuracy of each module structure and the rationality of electrical component layout,which lays a foundation for static analysis and check,as well as dynamic characteristics analysis.For the application of different engineering needs to provide solutions for the development of series of products to provide technical requirements.(3)The theoretical analysis and calculation of the body structure and key parts of the climbing equipment are carried out,the finite element static analysis is completed,and the dynamic characteristics of the equipment is simulated.The dynamic analysis of the support frame of the equipment is carried out,the natural frequencies of the first six orders are analyzed,and the running speed is calculated,so that the running speed can avoid the resonance interval.Dynamic simulation is carried out on the model of the whole mach ine to complete the modal analysis of the body with the change of load and displacement,to get the relationship between the mode shape and the change of working condition,and to judge whether the body is in the sensitive range of frequency.The mechanical properties of the machine body meet the design requirements and improve the reliability and safety of the equipment operation.(4)Complete the construction of the test tower and the production of the prototype equipment.A series of complete application schemes are put forward for the cable well renovation project,and the engineering application of climbing equipment is carried out.The equipment can be applied to transmission line tower,wind power tower,construction industry,communication tower and fire rescue and other aspects,can effectively reduce the labor intensity of the operator,in the case of ensuring safety,improve work efficiency,personnel and goods transport,can also increase many tower online monitoring functions. |
