Study On Key Technology Of Large-distance Walking Mechanism Of Heavy-duty High Power Shearer

For the shearer led to the operation of the agency in the process of a great deal of resistance, coupled with the lubrication effect is poor, serious wear and tear of the gear and the guide shoe, such as complex and easy to break. Based on the scientific optimization design method, virtual reality technology and computer technology, this paper studies the walking mechanism of heavy load, high power and large pitch shearer. Which aims to reduce the failure rate of the shearer walking mechanism and improve the overall reliability of the shearer. The main research contents are as follows:According to the investigation of the fault of the walking mechanism, the damage of the gear wheel is the main reason that affects the production efficiency of the shearer. This paper presents a design scheme of heavy-duty high-power, large pitch gear wheel. The design of the program does not change the size of the case of the central slot, a reasonable increase in pitch,to achieve supporting design and use requirements.In view of the demanding of working parameters and working conditions of full-mechanized face, the motion simulation of equipments with mining production process has been completed according to the analysis of process of the equipments of full-mechanized coal mining face and the function of Quest3D software.A new type of lubrication structure is designed for the poor lubrication effect of the existing travel mechanism. The structure can avoid the external damage to the oil box,reduce the impact on the shearer walking mechanism, and to achieve full lubrication of the wheel wheel effect.Aiming at the complicated and easy - to - wear fracture of the guide shoe, the main reason of the failure of the guide shoe is analyzed, and an optimized guide shoe structure is put forward. The finite element analysis method is used to simulate the force of the finite element method, and the ideal result is obtained.At last, the fatigue life of the structure is calculated and compared by using ANSYS fatigue analysis module, and the fatigue life of the structure is improved significantly...