The Design And Research Of Bridge Bottom Inspection Operation Platform

With the development of economy,the total number of bridges in our country has been increasing,and the safety situation of bridges has been paid more and more attention.Most of our bridges are concrete bridges,with the increase in the number of years of use,by the impact of many factors,will be natural aging and structural damage.Bridge health problems tend to focus on the bottom of the bridge,which brings difficulties to bridge the maintenance.Traditional bridge bottom detection platform,the use of basket and build scaffolding operating efficiency are very low;Bridge detection vehicle detection efficiency is relatively high,but the price is very expensive,the domestic just started,the technical level and product diversification also has a certain gap with foreign countries.Therefore,how to ensure the operation efficiency of the bridge bottom inspection platform,while reducing economic costs,not only to broaden the market prospects,but also for the improvement of special operations equipment design theory is important.This article takes the common two-way four-lane bridge as the main detection object,according to the job requirements and functional requirements,developed a bridge inspection platform,both can reduce economic costs,but also to bypass the pier,to achieve the direction of the bridge along the continuous operation,to ensure high operating efficiency.Firstly,the overall scheme is determined,and the structure and function realization of each component of the bridge bottom inspection platform are designed in detail.The 3D model of the bridge bottom inspection platform is established in Pro / E.The hydraulic system of the bridge bottom detection platform is analyzed and studied.According to the different actions,the implementation scheme of the balanced circuit and the buffer circuit is determined,and the hydraulic schematic of the system is worked out.The working pressure of the hydraulic system of the bridge bottom inspection platform is determined.According to the different load,the parameter matching of the hydraulic components is analyzed.Through the static analysis of the boom system,the structural strength and displacement deformation are checked by using the finite element software.Through the modal analysis of the boom system,the natural frequency and vibration mode of each stage are obtained,and the vibration danger part is found.Whether the risk of resonance,to provide the basis for optimization.In the ADAMS software,a virtual prototype is established,and the motion simulation analysis is carried out to record the trajectory of the centroid trajectory of the boom system,and the stability analysis is carried out to ensure the risk of overturning.Through the dynamic analysis,the key hinge and slewing force curve,analysis of the different stages of the force characteristics and methods,is the follow-up to optimize the important theoretical basis.