2results about How to "Simple design method" patented technology

This invention relates to the field of motor design and manufacturing technology, and provides a motor structure that solves the problems of poor heat dissipation and easy local overheating in the end windings. The motor structure includes a stator core and windings. The windings include a winding slot portion assembled within a stator core slot and a winding end portion extending beyond the end face of the stator core. The cross-sectional width W of the winding end portion is... end The cross-sectional width W of the portion inside the winding slot is greater than the width of the winding slot. slot And W end >W end,min W end,min This refers to the minimum cross-sectional width of the end winding, determined based on the target temperature difference constraint between the end winding and the slot winding. This invention achieves axial temperature uniformity of the winding without adding a cooling system, eliminating localized hot spots and improving power density and insulation life.

This invention relates to a high-yield and efficient multi-face mining method with full mine filling, belonging to the field of mining technology. The method involves determining the number of working faces for simultaneous production based on the mine's designed capacity; optimizing the design of the mining, tunneling, and transportation system across multiple levels and working faces; conducting risk assessments for multi-face filling and mining through theoretical analysis and numerical simulation; determining filling equipment, processes, and design parameters for filling faces based on filling requirements; arranging multi-face mining working faces in multiple coal seams; and verifying and providing feedback on the key parameters and feasibility of adjusting multi-face filling and mining production and the filling system. This invention proposes efficient mining technologies for multi-face mining in single-layer mining areas and multi-face mining in three-dimensional space, along with corresponding efficient filling technologies and equipment. It overcomes the bottleneck of filling mining affecting coal production efficiency, enabling efficient filling mining in mines with a capacity of over ten million tons.