Advanced Materials Research Vols. 694-697

Abstract: The manufacturing industry is moving toward rapid customization; this has an important effect on the nature of the fixtures that are used to clamp components. The research and application of reconfigurable pin fixture will become a necessity. Development of a reconfigurable pin fixture system is a complex procedure, as it involves many aspects of the system to be integrated: design, process planning, manufacturing, assembly etc. A thorough investigation of previous research into design of reconfigurable pin fixture is made in this paper. The review is comprised of five parts: pin cross-sectional shape, pin tips, pin density, pin actuation method and pin matrix clamping.

Abstract: It is important to find the proper levitated positions in the standing wave levitator. Using ANSYS and MATLAB, the standing wave field and the time average potential are simulated with the levitator whose radiating surface and reflecting surface are concave spheres. The simulation results show that the position close to reflecting surface deviates from the central axis, the others in the central axis. Levitation experiments for the light specimens are carried out with the standing wave levitator, which conforms to the simulation results.

Abstract: Superstructure of Zhuzhou Bridge in Baise is a combined system with strong beam and weak arch. It is combined by concrete arches of continuous rigid frame-steel tube. The construction sequence is first the beam then arch, finally the temporary pier is demolished to form the combined system. The middle three parts of steel tube arch rib in the middle span were assembled to a large unity, and it was integrally lifted by synchronous system of hoisting jack to reach positive stop. The techniques have the characteristics of fast, safe and low cost.

Abstract: In order to disassemble,install,and debug the dobby shedding mechanism of ASGT221 reasonably,the specific steps and operation methods are put forward after exploration and practice,the paper points out the key points of debugging from six aspects,such as adjusting the position of the probes in the holes of the embossed paper,adjusting the gap between the probes and the embossed paper,adjusting the in and out gap between the pull pin and the addendum of the catch plate,installing the signal gear,adjusting the indexing cam and debugging the shedding time,so the paper can enrich and improve the operation manual of it,and enhance the quality of its operation,tamp the foundation of improving the product quality.

Abstract: The research on combat resilience is a new subject proposed in recent years. As a matter of fact, there is so far no complete theoretical system guiding the design for equipments combat resilience. Thus, using the integrated design theory and methodology based on the systematic engineering, the basic theory of the design for equipments combat resilience is putted forward and established in this paper. Meanwhile, the methods and procedures of the design for equipments combat resilience are proved by an example of the design of certain fighter landing gear for improving the combat resilience.

Abstract: The subsoiling shovel is the main tool for subsoiling in conservation tillage and its quality directly influences the effect of subsoiling. In this paper, based on the subsoiling shovel retrofit design, the research achievements of bionic techniques were applied to design the subsoiling shovel, and the three-dimensional models of modified subsoiling shovel and bionic subsoiling shovel were created through the software of Pro/E. Then apply Finite Element Method was used to do analog simulations for the two kinds of subsoiler. Analysis Result showed that the bionic subsoiling shovel reduced working resistance and the obvious phenomenon of stress concentration did not appear at the tip of bionic subsoiling shovel. Development design of bionic subsoiling shovel can effectively reduce the operation energy consumption and create great economic benefits.

Abstract: A leveling mechanism of faceplate of low frequency mechanical spectrum apparatus is designed. The faceplate is kept horizontal and stable by the leveling mechanism when low frequency mechanical spectrum apparatus is installed or used. The present designed leveling mechanism can be used to adjust the faceplate up or down by turning the adjusting nut. In addition, the rubber pad with high damping capacity is installed on the leveling mechanism, producing vibration isolation effect.

Abstract: The purpose of this study was to investigate plantar pressure of male adults under different sing-shoulder weight during walking. Experiments were conducted at single-shoulder load styles in four different weight conditions by three-dimension force platform system. Four weight conditions were 5%, 10%, 15% and 20% of body weight. Seven characteristic parameters were selected and analyzed by statistical methods. The results showed a significant difference for the male subjects at 13% of body weight loads comparing with natural walk. Ground reaction force was employed to analyze human movement. This study was designed to obtain the data of foot pressure, which was important to the balance of control of biped robot.

Abstract: The effective thermal efficiency characteristics of the integrated piston-plunger pump were studied. The integrated piston-plunger pump integrated piston engine and plunger pump technology as a whole, making piston linear motion into plunger output water pressure energy. Compared with piston engine driving plunger pump system, the best effective thermal efficiency area and the best effective thermal efficiency characteristic curve was obtained. Under total working conditions, effective thermal efficiency was improved by 13.63-74.45% compared with piston engine driving plunger pump system. The same effective thermal efficiency level contained wider working conditions than the piston engine driving plunger pump system. The highest effective thermal efficiency of integrated piston-plunger pump under different throttles was between 19.91% and 28.88%, and the corresponding speed was about 1400 r/min.

Abstract: Electric traction coal shearer is widely applied by the coal industry in present China. Its stable and safe working status is a key factor to guarantee the stability and safety of colliery’s production. This paper aims to analyze coal shearer’s fuselage vibration characteristics under different forms of cutting teeth conditions via actual measurement in working face and try to work out different teeth forms’ influence degree on shearer’s fuselage vibration. The research have surely drawn some significant conclusions, which will provide theoretical guidance for industrial practicing and help to avoid body’s damage caused by the fuselage vibration.