Dynamics Simulation And Structural Optimization For Rail Manipulator Of The Garbage Truck

With the process of our country’s urban modernization and township urbanizationsignificantly accelerated, the amount of municipal solid waste is increasing. Theawareness of environmental protection has given rise to the introduction of morenational and local environmental policies, and then promotes a rapid innovation anddevelopment of the automatic garbage collection system. The existing collectionmode is mainly “dustbin—sanitation workers’ carts—refuse collecting station—wastetransfer station^garbage disposal plant，，，which is low efficient and high laborintensity. Especially, the refuse collecting station or transfer station have a directimpact on the quality of the urban environment and construction. On the garbagecollection technology, the domestic is mainly depend on a method of manuallymoving the dustbin to the side of the garbage truck, then hooking, finally dumping bysemi-automatic lifting dustbin. Although the foreign using the manipulator grabbingthe dustbin, it has some problems that the manipulator may knock the dustbin downand the gripper cannot automatically be aligned the dustbin.This paper puts forward the program of the rail manipulator based on the aboveissues. It utilizes the virtual prototyping technology and finite element technology todesign and optimize by throughing the software of ADAMS and HyperW orks for therail manipulator. The main contents are as follows:(1)According to the functional requirements and technical specifications of thegarbage collection automatically, the advantages and disadvantages of the existinggarbage truck manipulator at home and abroad, we put forward an overall program,and complete a detailed structural design and interface design.(2)Utilizing the dynamics simulation software ADAMS to establish virtualprototype model of the rail manipulator, we analysis the process of the manipulatorgrabbing the dustbin in various typical operating conditions. Then we obtain thecorresponding clamping force, support reactions and hydraulic cylinder driving forcesof the manipulator’s composite motions. Finally, we verify the simulation data bystatics theory.(3)Utilizing the HyperW orks software to establish finite element model of therail manipulator, we acquire stress and deformation nephogram by the finite elementanalysis in various typical operating conditions, then check the static strength andrigidity.(4)Based on the OptiStruct platform, we conduct the lightweight design for therail manipulatorat by structural optimization method. Regarding the main components’ thickness as design variables, the various components’ maximum stressas constraints, the minimum quality as the objective function, we carry on thereasonable optimization design for the main components’ thickness. Finally, weacquire a lightweight rail manipulator meeting certain engineering requirements.