| Large mining hydraulic excavators is the large-scale complex mechanical and electrical systems of integrating mechanical,hydraulic and computer control technology, mainly used for various large-scale open pit mine exploitation,loading coal,tailings and other materials and large-scale infrastructure construction, which contrast with machinery type shovel, hydraulic excavator have the advantages of light weight,speed range,good mobility and accurate unloading, which represents the development of open-pit mining equipment. At present the foreign manufacturing technology of large-scale hydraulic excavator is very mature, and the biggest type with bucket capacity of 50 m3, machine weight of 900 tons. Domestic equipment in this field is still blank, no company had manufactured hydraulic excavators of bucket capacity more than 12 m3,the large-tonnage models depends entirely on imports. In this background, Taiyuan Heavy Industry Co.,LTD decided to design China's first of large mining hydraulic excavator with bucket capacity of 15 m3, machine weight 260 tons, which make early preparations for the decided of larger machine.To complete the design of excavator, it will be able to have a more comprehensive understanding for machine's operating characteristics before the machine be manufactured, we need to use digital simulation technology. At present,methods used at home and abroad are:(1) By use of ADAMS software for dynamics simulation of excavator working device, design mechanical structure, but this method can only solve the optimization problem of institutions, can not be more accurate to inflict hydraulic system drive for work device, let alone an accurate analysis of the machine operating efficiency and energy consumption. (2) The use of hydraulic system simulation software for design of excavator hydraulic system, due to it can not be accurately applied load force for the actuator in the mining process, and provide actuator is driven to the load quality of the change relationship with the change of excavation in position and speed, so it can not accurately simulate the real working environment of excavator. In order to overcome the deficiencies of two methods and to complete the R&D work, work out the technology way is co-simulation of the multi-body dynamics and hydraulic systems in the excavator operating processes.Papers with co-simulation based on using ADAMS software and AMESim software for mining excavator of working devices and hydraulic systems, by simulation to determine the design parameters of excavator. Specific contents are:1. By use of mathematical methods to establish mining force model of face shovel hydraulic excavator in the mining process and analyze its maximum digging resistance.2. The establishment of mathematical model of excavator movement condition; Use the Pro/E software to its parts for 3D solid modeling and virtual assembly, and assembly model will be imported into dynamic simulation software ADAMS by using MECH/Pro interface software, then add constraint and drive, simulate and analyze its special sports conditions.3. By using AMESim software to establish hydraulic control system model, by co-simulation based on the interface with the ADAMS and AMESim for mechanical devices and hydraulic systems, analysis the max push force of excavator on the level of pushing conditions and rotation inertia of various parts of working to rotation axis in the cycle of excavator working work.4. Analysis the power matching of the power system operating conditions; by co-simulation for working condition of excavators, analyze the efficiency of the excavators and energy consumption; present the hydraulic system of renewable flow, and compared energy consumption to the original system and the flow regeneration system.
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