Lorry-mounted Crane Hydraulic System Research And Optimization

Lorry-mounted crane is to realize the cargo handling and transport by special vehicles, ithas both common truck transport function, and there was a crane lifting handling function.With the increasing demand of infrastructure construction, it is widely used in variousindustries such as transportation, plays a more and more important role in the development ofthe society. Like other engineering machinery hydraulic drive, hydraulic system is a veryimportant part of the lorry crane work system, so in this paper, the lorry crane to study andanalysis of the hydraulic system and a certain degree of optimization.This topic to the straight arm lifting type lorry crane as research object, this paperintroduces the composition and characteristics of the hydraulic system, the lifting loop,expansion loop, rotary loop and leg loops has carried on the detailed research and analysis,and established the parameters of the important components in the hydraulic system. Giventhe importance of the constraint of reality and luffing system, so choose the luffing system forkey research analysis, has established its main parameters, luffing system dynamic model isestablished, and studies its dynamic characteristics are analyzed. Established the lorry craneluffing AMESim model of hydraulic system of the core components, combined with themulti-body dynamics model resembles the luffing system problems existing in the workingcondition. On the basis of theoretical analysis and simulation analysis, put forward theimprovement scheme of to amplitude of hydraulic system, the structure of the core hydrauliccomponents is optimized, eliminates the luffing down in the process of hydraulic impact,reduces the system pressure, effectively solve the amplitude jitter and down time is too longand balancing valve opening and closing lag and so on.This topic research methods for lorry crane hydraulic system design and optimizationprovides related theoretical basis, can improve the efficiency of research and development, shorten the product development cycle, save the design cost, to improve the technical level oflorry crane has a certain practical significance.