Structural Analysis Of Multione And Research On Work Device Leveling System

Multione is a small multi-function machine, and widely used in small-scaleearthworks. It is a kind of typical working condition of variable load mechatronicsproducts. Its telescopic boom structure enlarges the scope of work, make the workingdevice unusual flexible. Its quick change kit on the attachment plate can install with avariety of accessories, to adapt to different job situations, but followed it is for thestrict requirements in the attachment plate automatic leveling control.The paper based on the prototype of a certain type of Multione, establishes the3dmodel diagram, and analyzes its main function according to the relevant performanceparameters. First using ADAMS to analyses work device of Multione under loading andloading condition about the kinematics and dynamics, analyses the work transmissionangle, loading height, and unload distance under the loading height such as overallperformance parameters and the stress state of each hydraulic cylinder under loading andunloading conditions. In addition, on the basis of the existing Multione innovate anddesign attachment plate automatic leveling system in order to make accessories platesremain the same position with ground when the movable arm shift, the system improve thework efficiency and enlarge the using range of the installation accessories. This paperpresents the electro-hydraulic leveling control system, which uses the proportional control.The system uses a proportional valve controlling the hydraulic cylinder, by installingsensors on the movable arm and accessories plate, the control signal of the proportionalvalve can be determined by comparing the difference between the movable arm inputsignal and accessories plates output signal, the proportional valve can control thecylinder’s action, by this way, the leveling system can implement the plate’s operation onleveling. Final, by PID and fuzzy PID control simulation and relevant experiments havebeen carried out to verify the leveling system.Simulation results show that, the designed electro-hydraulic leveling control systemcan satisfy the attachment plate leveling when the movable arm changes angle85°within 4.2s, that’s mean the system can achieve stable within0.3s, and it can meet therequirements of attachment plate leveling.