Virtual Prototype’s Establishment And Simulation Analysis Of XH-PS Roadway Coal Winning Machine

Currently, there is a generally underground coal mining method which is used in somesmall roadways: First, many blasting holes will be dug at the mining face by drilling machine.Second, charging with mining explosives in the holes. Finally, the explosive will be detonated.After the blast work, a large volume of smoke and dirt will be produced in the mine. Beforeclearing up the broken ores, smoke and dirt should be thrown off by the ventilation and gasexchange equipment. Because there are a series of operations including digging blasting holes,detonating, exchanging ventilation and gas, obtaining block coals.Meanwhile, continuousmining operation won’t appear in the process. Many problems exist in the traditionaloperation mode, such as low working efficiency and poor safety.Aiming at the problems there are not continuous mining devices in the coal miningtechnology which is mainly based on explosive, after having referred to the structure types ofreverse shovel grab and coal-picking machine, this paper has proposed a continuous miningmachine, which is named XH-PS continuous coal winning machine.It has the characteristicsof simple configuration, little volume, no explosive use and convenient operation and canwork in small roadways. In addition, this machine will integrate the excellent excavatingperformance of hydraulic excavator and the high efficient picking and transportingperformance of coal-picking machine. The coal winning machine is consisted of crawlertravel unit, conveying appliance, excavating and picking device and control device etc. Thewhole machine is driven by power plant, which is explosion-proof motor. The machine issupplied external power by distribution equipment. As only one or two operating personnelcan drive the machine in the closed cab, it is more secure. Also, the coal winning machine canride on treads in the process of producing and digging, when the coal seam is mined, theefficiency will be promoted greatly.Above all, this paper starts with the theoretical analysis of the coal winning machine, thegeneral arrangement scheme of the machine, structure type of every part and some mainworking parameters have been analyzed and determined, based on above analysis,3D virtualprototype of the coal winning machine has been established in PRO-E. And then, after themathematical model of the working position and pose of the excavating and picking devicehas been established, its dynamic simulation analysis was performed by using unitedsimulation technique with PRO-E and ADAMS. Finally, the trajectory of terminal belongingto the equipment and some main working parameters has been abstained. The simulationresults have verified the correctness and reasonableness of the excavating and pickingdevice’s3D model. Through this method, the design time of the coal winning machine has been reduced greatly, Secondly, artificial adjustment of those hydraulic cylinders’ significancewhen the machine is working, after analyzing some strength situations of every hydrauliccylinder theoretically, the simulation model given a force of the excavating and pickingdevice has been established in ADAMS. Through the simulation, the stress variety of everyhydraulic cylinder has been abstained; meanwhile, the force peak values of every hydrauliccylinder have been abstained, which can provide references for building up the hydraulicsystem. In order to further know whether every part’s structure strength can meet therequirements, when the excavating and picking device is working, this paper takes the rotaryblock as an example. Its structural finite element analysis has been carried; analysis resultsshowed that the part’s structure strength can meet the requirement for the device beingworking.