Maching Research Based On LS Optimization Of Lifting Arm In Hydraulic Aerial Work Platforms

Aerial work platforms is the special equipment in construction machinery, theusing field gradually extended to the ship repair, garden building, road maintenance etc.from the former like electric power, fire rescue, it has gradually expanded from theoriginal use of electricity, fire rescue, etc. to ship repair, landscape construction, roadmaintenance and other areas. at the same time, the domestic aerial work platforms qualitycontinues to improve, and even toward the first in the world quality target continuousefforts. However, aerial work environment relatively special, puts forward more strictrequirements for their safety and stability, so the aerial work platforms safety and stabilityis a very important index to test for aerial work platforms.Stationary in the aerial work platform of hydraulic system stability and operationplatform lifting speed is studied, by using the load sensing technology, to improve theperformance of the aerial work platforms.Based on the internships on20m self straight arm type aerial work platformsdevelopment project as the research object. The high-altitude operation car developmentsituation at home and abroad systematic analysis, to the structure will be straight armshare in the market gradually increase. Such as the use of pro/E software for3D model20m self-propelled straight arm type high-altitude operation car for3D model design. Thecomparative analysis of both load sensitive variable pump and pump in the advantagesand disadvantages of, at the same time, with the establishment of dynamic model ofLifting mechanism of aerial work platforms, analysis of the lifting movement, therelationship between amplitude angle, angular velocity, oil cylinder telescopic speed,operation platform lifting speed and load parameters, the load sensitive variable pump ismore suitable as the power source for the hydraulic system for aerial work platforms. Inthe constant angular velocity conditions, operation platform’s up and down motion can be maintained at a constant speed. A stationary for aerial work platforms warranty, comfort isimproved and the operation of personnel. The load sensitive variable pump and pressurecompensation balance valve combination, make roughly the same in ensuring constantvariable argument required speed flow and load sensitive variable pump outlet flow,Thereby reducing the throttle loss, improve energy utilization rate of aerial workplatforms. Modeling and Simulation of the hydraulic components of hydraulic systemsimulation software by AMESim, Analysis of variable pump outlet flow oil cylinder andthe relationship between the required flow. According to the simulation results candetermine the hydraulic system after optimization can improve the stability of workingplatform and throttle loss decreased amplitude hydraulic system, To improve the wholeperformance of high altitude working vehicle of purpose.