高温热油泵机械密封及辅助系统的设计改进

在改造高温热泵机械密封的过程中,很多厂家采用Plan 21冲洗和单焊接金属波纹管密封结构的解决方案,该方案结构简单、使用成本低,能明显地提高焊接金属波纹管机械密封的寿命.因此,很多厂家大力推荐和使用.指出该方案存在严重安全隐患,提出必须以安全性为前,准确理解和正确运用API682推荐密封型式及辅助系统,防止高温密封泄漏恶性事故的发生.     

Integrated reproduction of human motion components by motion copying system

Currently, the development of leading‐edge technology for recording and loading human motion on the basis of haptic information is required in the fields of manufacturing and human support. Human movement is an assembly of motion components. Since human movements should be supported by a robot in real time, it is necessary to integrate the motion components that were saved earlier. Once such motion integration is realized, future technology for use in daily human life can be developed. This paper proposes the integrated reproduction of the decomposed components of human motion by using a motion copying system. This system is the key technology for the realization of the acquisition, saving, and reproduction of real‐world haptic information. By using the proposed method, it is possible not only to achieve expert skill acquisition, skill transfer to robots, and power assist for each motion component, but also to open up new areas of applications. © 2012 Wiley Periodicals, Inc. Electr Eng Jpn, 181(1): 28–35, 2012; Published online in Wiley Online Library (wileyonlinelibrary.com). DOI 10.1002/eej.21263     

国外最新“钱夹式”包装及其设备

通过介绍“钱夹式”包装所需的两个主要设备，探究“钱夹式”包装生产的前景。运用德国BOSCH公司的泡罩包装设备TLT-2800S对药品进行包装后，再运用德国Haarro Honiger公司的WalletLine将泡罩包装后的药板包装成“钱夹式”。     

深水平断层破碎带巷道支护施工技术

夹河矿风井-1010m水平井底车场巷道处于千米水平断层破碎带内,在深水平和断层破碎带状态下,巷道受到的地应力明显,变形量较大。现场采用锚网喷、扶棚与反拱、锚注联合支护技术及一些合理的方法后,解决了巷道通过断层破碎带支护施工技术难题和巷道继续变形破坏问题,支护效果较为明显,为今后千米深水平巷道通过断层破碎带的支护设计和现场施工提供了经验。     

PLC在两工位钻孔攻丝组合机床改造中的应用

运用西门子S7-200系列PLC技术,对其传统设备进行技术改造。设计了PLC的I/O分配和外部接线图,编写了PLC的功能流程图和程序梯形图,运行结果与实际生产要求一致。对于提高两工位钻孔、攻丝组合机床工作效率,减少传统设备维修工作量,值得技术借鉴和推广应用。     

掘进机内喷雾系统技术研究

文章通过对潞安环能股份公司常村煤矿掘进机内喷雾系统,在实际应用过程中存在的问题进行分析,对原有悬臂段的水路结构进行技术改造,解决喷雾水因密封失效对悬臂段内轴承带来的损坏,以及造成切割电机进水后跳闸等问题,同时,对改善工作面的喷雾效果和工作面的作业环境具有积极意义。     

电热式硫化机打压装置、冷却装置研制及应用

该文通过介绍电热式硫化机在接头硫化过程中遇到打压、冷却问题,研制一套可靠、实用的硫化打压、冷却装置来保证硫化接头质量。该装置在井下硫化接头中得到了应用,收到良好的效果。     

Satisfaction with health status among cyber patients: testing a mediation model of electronic coping support

There has been a growing interest among researchers about the Internet-based social support. However, not much is known about whether electronic support is associated with subjectively reported patient health outcomes. This study examines variation in satisfaction with physical health status among users of self-help groups for patients with cancer (N = 350). The analytical approach of the study differs from previous work in that satisfaction with physical health is modelled not as a predictor, but as an outcome variable. The study tested the hypothesis that perceived ability to cope with cancer mediates the association between electronic support and health satisfaction. Path analyses using ordinary least squares multiple regressions showed that there is an indirect association between electronic support and health satisfaction via perceived ability to cope with cancer. Electronic support increased perception of control over cancer, which in turn led to higher levels of satisfaction with health status. External health locus of control was associated with greater benefits derived from electronic support. This article concludes that the evaluation of physical health status includes not only clinical indicators but also subjective assessment of coping ability. Thus, the cyber social context in which health perceptions are developed has important medical implications for patient outcomes.     

Dried jujube classification using support vector machine based on fractal parameters and red,green and blue intensity

A new method that combines fractal theory and red, green and blue (RGB) colour intensity was developed to sort dried jujube fruits by using support vector machine (SVM). Our result shows that the new method is fast and accurate in dried jujube fruits classification. The SVM models based on fractal parameters only achieved 85.18–92.73% total accuracy rate. The total classification accuracy of SVM based on RGB intensity values was 94.44%. However, the SVM models based on combining fractal parameters with RGB intensity values achieved 94.44–98.15% total accuracy rate. The best classification accuracy (98.15%) was found when using SVM model based on combining fractal measures (FM) with RGB intensity values (C = 512, γ = 0.0078125). Therefore, the SVM model based on combining FMs with RGB intensity is recommended in dried jujube fruits classification.     

Product-cost modelling approach for the development of a decision support system for optimal roofing material selection

Selection of optimal roofing materials is very important but it is a complex and onerous task as varieties of materials are available for housing roof construction. In order to select suitable materials, an extensive range of criteria would need to be considered. This paper presents the framework and the development of a knowledge-based decision support system for material selection implemented in roofing material selection domain, called ‘Knowledge-based Decision Support system for roofing Material Selection and cost estimating’ (KDSMS). It was developed to facilitate the selection of optimal materials for different roof sub elements. The system consists of a database and knowledge base that is equipped with an inference engine. The former is used to store different types of roofing materials with assigned attribute values. The later is used to hold qualitative and quantitative knowledge which were collected from domain experts and other technical literatures such as building regulations, price guide book and product catalogues. The proposed system employs the TOPSIS (Technique of ranking Preferences by Similarity to the Ideal Solution) multiple criteria decision making method to solve materials selection and optimisation problem. This study utilised the available roofing materials in the UK housing market in developing the system reported. The main contribution of the developed system is that it provides a tool for the architects, quantity surveyors or self house builder to select optimal materials from a wide array of possibilities for different roof sub elements and also to estimate the conceptual cost for the roof element in the early stage of building design.