Study On The Constant Velocity Control Of Hydraulic System

The concrete mixer has extremely extensive application in building construction andcivil engineering, construction quality of concrete quality requirements more stringent,concrete mixer mixing performance has a direct influence on the quality of concrete. Theconcrete mixer in the concrete mix from concrete mixing stations, transport to theconstruction site in the process, the quality of concrete stirring speed fluctuations. Throughcomparison of several implementation scheme of concrete mixing truck constant speedstirring, the constant speed control of hydraulic system. The constant speed control ofhydraulic system can keep constant rotational speed of the mixing cylinder in the chassis ofthe vehicle engine speed changes, so as to realize the constant speed stirring. Then the designof each component of hydraulic system model and the corresponding parameters calculatedand selected, according to the load demand for various parameters are checked contrast.Modeling for constant speed hydraulic system by using AMESim software, the simulationanalysis of the curves of constant speed of hydraulic system in the feeding condition and fullcondition parameters. In order to validate the performance of constant speed constant speed ofhydraulic system, built of concrete mixing truck constant speed test platform hydraulic system,to test the constant speed valve constant speed performance, finally get the performancereference data for constant speed valve, according to the test data, the analysis of constantspeed performance of constant speed valve on the hydraulic drive system. Comparative data,that the constant speed valve can basically meet the mixer constant speed performance.