The Design And Research On Hydraulic Transmission And Control System Of Small Garbage Sweeper

With the rapid development of the city, the volume of the cleaning tasks of public facilities such as munieipal、roads、squares、residential areas、parks and enterprises is increased, the degree of mechanization of municipal and sanitation operations have become increasingly demanding. It has important theoretical significance and practical value on leaning machinery to research of suitable for the characteristics of the urban road, adapt to the requirements for the development of modern sanitation,the new、efficient、 environmentally-friendly small city garbage sweeper.In this paper, the introduction to the present developing situation of the small urban cleaning garbage at home and abroad is analyzed in firstly; through the analysis of clean vehicle technologies for small garbage, hydraulic drive program on the sweeper running gear and working bodies have been proposed, and different design options were analyzed. In order to protect the safety of operations, the steering priority shunt control technology have been used in cleaning and steering subsystem; and in order to ensure sweeper has better adaptability to working condition, walking system uses hydrostatic stepless speed drive technology, at the same time, the power and heat balance of hydraulic system are calculated and analyzed;secondly, the parameters of broom and steering devices, bins and fan, and walking device are calculated, and component are selected. Again, by using AMESim simulation software, the model and simulation of hydraulic system were established. By setting the different parameter of external load source, the various operating condition, the loop pressure flow and power variation were studied. Simulation results show that:①The design of the hydraulic drive system for small garbage is reasonable;②On the choice of engine power, the companies originally proposed a18kW engine, can not meet the cleaning operation on the road with a slope of15degrees, the engine power needs to be increased to broaden the use of the sweeper; Finally, PLC control schemes have been proposed by the analysis of small garbage sweeper hydraulic drive system control requirements; also, the hardware of the system was selected, the interface was designed and the control procedures were preparated.