Papers by Author: Qiang Lei

Abstract: According to the work requirements of a production line of sheet metal handling, using the mechanical design principles and methods, pneumatic technology and PLC control technology for sheet metal handling manipulator research and design, and development a style of automatic handling manipulator meeting the requirements. This article introduced the sheet metal handling manipulator and principles of the basic structure of the hand, pneumatic systems and PLC control system design and analysis. Practice shows that the manipulator has a simple structure, reliable, efficient features, which meet actual production needs.

Abstract: The roof is cemented backfill in underhand drift cut-and-filling stopping, stability of cemented fills is the key to safety of mining. Through numerical simulation test, simply supported beams subjected to uniform was considered mechanical model of backfill roof. and failure modes of backfill roof was found through physical modeling experiment. The results show that the failure of backfill roof is first happening from the center at the bottom of backfill, the final result is that falling arch. Based on the the result of the experiment, finally, The reasonable reinforcement pattern was proposed to avoid failure of backfill roof.

Abstract: Through combine geometric modeling in SOLIDWORKS with dynamic simulation in ADAMS, a tilted-jaw crusher model was built. The content of simulation are horizontal and vertical displacement of discharging and feeding port, dynamic motion characteristics, speed and acceleration of movable jaw’s center of gravity, the pendulous moment that bracket suffered, and other important parameters .The results confirmed that the movement of the tilted-jaw crusher and dynamic features meet the crushing requirements. But bracket and bearing existed huge pendulous power and pendulous moment. The research and ideas about the tilted-jaw crusher value for the optimal design of the crusher, provide an effective method for improvement, there is a strong practical value.