Construction Safety Management of Mechanical and Electrical Installation Projects

Various industries today rely on the support of electromechanical equipment,expanding its scope of application and leading to an increase in electromechanical installation projects.However,due to the high level of expertise required and the potential risks involved,it is crucial to emphasize safety management during construction.This paper delves into the significance of construction safety management for electromechanical installation projects,identifies common problems encountered during construction,and proposes solutions.This analysis aims to provide relevant personnel with essential guidance and references for managing electromechanical installation projects safely.

Review of Power Supply and Distribution Construction Technology for Highway Electromechanical Engineering

In recent years,China has made significant progress in the construction of highways,resulting in an improved highway network that has provided robust support for economic and social development.However,the rapid expansion of highway construction,power supply,and distribution has led to several challenges in mechanical and electrical engineering technology.Ensuring the safe,stable,and cost-effective operation of the power supply and distribution system to meet the diverse requirements of highway operations has become a pressing issue.This article takes an example of a highway electromechanical engineering power supply and distribution construction project to provide insight into the construction process of highway electromechanical engineering power supply and distribution technology.

Application Strategies of BIM Technology in Highway Electromechanical Engineering

The transportation system is vital for social and economic development.With the rapid economic development,the demand for highways has been increasing.Mechanical and electrical engineering is a crucial part of highway construction,affecting the expressway’s later use.Applying building information modeling(BIM)technology in highway electromechanical engineering allows for the visibility and simulation of mechanical and electrical engineering construction,providing scientific guidance for construction.In this research,the author analyzes the advantages of BIM technology in highway electromechanical engineering and the basic composition of electromechanical engineering.The research proposes strategies and cases for applying BIM technology in highway electromechanical engineering.The ultimate goal of this research is to improve the construction of highways in terms of electromechanical engineering.

MODELING AND IMPLEMENTATION OF SPEED GOVERNOR FOR THE HYBRID ELECTRIC VEHICLE ENGINE

A speed control analysis for an in-line gasoline fueled internal combustion （IC） engine is presented for the purpose of alleviation of high frequency oscillations in engine revolutions. A dynamic cylinder-by-cylinder model is proposed, base on slider-crank mechanism, which is extended to develop a digital governor providing a high fidelity estimation of rotary speed oscillation for hybrid vehicle engines. A modified PID controller that P and I gain is placed in feedback path is also described for hybrid electric vehicle （HEV） engine speed regulation, By comparison between measured and estimated signals, it is demonstrated that a good agreement has been achieved and the governor behaves an excellent damping speed ripple.

Monitoring Method for the Electrical Properties of Piezoelectric Transducer

The monitoring of cutting force in a vibration cutting process has a great significance in the popularization of ultrasonic vibration cutting technology. A new monitoring method of which the cutting force of ultrasonic elliptic vibration cutting is monitored using the electrical properties of transducer was proposed by studying on the relationship of cutting force, transducer electric impedance and load. A measurement system was designed for the electrical properties of transducer. The feasibility of cutting force monitoring method based on the electrical properties of piezoelectric transducer was proved by the cutting experiments.

Analysis and Comparison of Electric Drive System Projects of Military Tracked Vehicles

The electric drive system characteristics of different projects for tracked vehicles are analyzed.For the two most typical projects,the parameters of power,torque and rotating speed and others of drive motor are figured out under the condition of satisfying adequate steering performance of the tracked vehicles.General opinions on the two projects are brought forward and conclusions are drawn.

Determination of rock mass integrity coefficient using a non-invasive geophysical approach

Determination of rock mechanical parameters is the most important step in rock mass quality evaluation and has significant impacts on geotechnical engineering practice.Rock mass integrity coefficient(KV)is one of the most efficient parameters,which is conventionally determined from boreholes.Such approaches,however,are time-consuming and expensive,offer low data coverage of point measurements,require heavy equipment,and are hardly conducted in steep topographic sites.Hence,borehole approaches cannot assess the subsurface thoroughly for rock mass quality evaluation.Alternatively,use of geophysical methods is non-invasive,rapid and economical.The proposed geophysical approach makes useful empirical correlation between geophysical and geotechnical parameters.We evaluated the rock mass quality via integration between KV measured from the limited boreholes and inverted resistivity obtained from electrical resistivity tomography(ERT).The borehole-ERT correlation provided KV along various geophysical profiles for more detailed 2D/3D(two-/three-dimensional)mapping of rock mass quality.The subsurface was thoroughly evaluated for rock masses with different engineering qualities,including highly weathered rock,semi-weathered rock,and fresh rock.Furthermore,ERT was integrated with induced polarization(IP)to resolve the uncertainty caused by water/clay content.Our results show that the proposed method,compared with the conventional approaches,can reduce the ambiguities caused by inadequate data,and give more accurate insights into the subsurface for rock mass quality evaluation.

An investigation of cam-roller mechanism applied in sphere cam engine

As an alternative power source for hybrid electrical vehicle(HEV), electric generating system(EGS) driven by sphere cam engine(SCE) is said to own higher power density and integration. In this work, the structure and working principle of EGS were introduced, based on which the advantages of EGS were displayed. The profile of sphere cam was achieved after the desired motion of piston was given. After establishing the dynamic model of power transmission mechanism, the characteristics of cam-roller mechanism were studied. The results show that the optimal cam profile of SCE is a sinusoid curve which has two peaks and two valleys and a mean pressure angle of 47.19°. Because of the special cam shape, the trace of end surface center of piston is an eight-shape curve on a specific sphere surface. SCE running at speed of 3000 r/min can generate the power of 33.81 kW, which could satisfy the need of HEVs. However, the force between cylinder and piston skirt caused by Coriolis acceleration can reach up to 1182 N, which leads to serious wear between cylinder liner and piston skirt and may shorten the lifespan of SCE.

低照度下改进YOLOX的煤矿无人电机车轨道障碍物检测方法

为解决地下煤矿光照不足进而导致无人电机车脱轨、撞车或侧翻等问题,提出了一种低照度多特征融合的YOLOX-CBAM目标检测算法,对矿井无人电机车轨道障碍物进行有效识别与分类。首先,通过实际场景采集及标注构建地下煤矿障碍物数据集,并将其输入微光数据处理Zero_DCE模型中;其次,对YOLOX目标检测网络进行改进,分别在骨干网络CSPDarknet和特征金字塔(Feature Pyramid Networks,FPN)部分增加双通道CBAM注意力模块,解决了特征提取环节通道单一的问题;最后,将预测头部分的损失函数替换成SIoU,加快了模型迭代的速度。结果表明,与传统两阶段Faster-RCNN网络、YOLOv4网络、YOLOv5网络和原YOLOX网络相比,本模型精确率分别提高了4.65百分点、2.65百分点、2.19百分点、1.35百分点,召回率分别提高了9.39百分点、4.36百分点、0.82百分点、0.76百分点,速度分别提高了28.6帧/s、16帧/s、13.6帧/s、2.9帧/s,同时本模型与分别添加CBAM、SA、SA+SIoU、SE、SE+SIoU,YOLOX-CBAM模块的YOLOX模型相比,其精度分别提高了0.64百分点、0.84百分点、1百分点、1.29百分点和0.76百分点,速度分别提高了0.5帧/s、0.4帧/s、0.3帧/s、0.2帧/s和0.4帧/s。所提出的方法能实现地下煤矿井下无人电机车轨道障碍物的快速准确检测,并为地下矿运输设备的智能化升级及安全运行提供理论支撑。

地方应用型高校机电类新工科专业研究性教学探索与实践

分析了地方应用型高校机电类新工科专业在开展研究性教学过程中存在的障碍,并给出了解决这些障碍的有效途径。通过对管理评价模式、培养模式、师资队伍、硬件资源配置、平台构建等进行改革创新,可以充分调动师生参与研究性教学的积极性和主动性。通过开展研究性教学,增强教师的教学培养水平,提高学生的创新实践能力,为推动机电类新工科人才培养质量提升提供参考。

CDIO-OBE理念下电气工程专业教学新范式

针对电气工程专业在教学设计、创新能力培养、个性化差异教学方面存在的问题,提出将CDIO模式和OBE理念融入教学之中。更新教学内容,重塑教学知识点,加强线上、线下一流课程建设;精选适合的工程项目,拓展虚拟仿真实验,开发快速原型创新实验平台;适时引入思政元素,实现师生多维互动,积极开展分类教学,多方面引导并帮助学生顺利完成学业。教学实践表明,学生的创新能力显著提升,毕业生就业率高、专业素质过硬、受到企业好评,育人效果得到学生和家长的赞许。

“新工科+工程教育专业认证”背景下基于产教融合的机电类专业人才培养模式研究

针对新工科建设和工程教育专业认证对机电类专业建设和人才培养提出的新要求,结合机电类专业特色及目前存在的人才培养特点不鲜明、无法满足现代工程技术型人才培养要求等问题,在分析工程教育专业认证与新工科建设辩证关系的基础上,从调整专业结构、转变教育理念、搭建实践教学平台、构建“双师型”教师队伍、构建全方位多视角的人才质量评价体系等方面提出了改革建议,以期在机电类专业实现新工科建设与工程教育专业认证的有机统一。

关于医院建筑机电工程创新的思考

现今医院建筑机电工程模式与当今快速发展的时代背景不协调,妨碍了机电工程实现功能需求和“双碳”目标的要求,需要创新。分析了现今医院建筑机电工程模式的弊病;提出了在完成机电系统综合的基础上,与建筑工程剥离,作为完整独立的工程项目单独实施,在整个过程中以运维作引导,充分发挥设计龙头作用;基于医院建筑电气化、电力需求响应,探讨了医院建筑机电工程实现功能目标且经济低碳的运维策略;最后指出医院建筑机电工程创新的直接受益者和主导者是医院。

“3+2”联合培养模式下本科层次职业教育数学课程衔接发展研究——以安徽机电职业技术学院为例

“3+2”联合培养模式是本科层次职业教育的主要模式之一,有利于提升本科教育与职业教育的课程衔接效果。以安徽机电职业技术学院为例,剖析本科层次职业教育数学课程衔接背景与课程开展现状,从目标衔接、内容衔接、教法衔接、考核评价衔接等方面,深入分析本科层次职业教育数学课程衔接发展的措施,有助于为“3+2”联合培养模式下本科与职业教育数学课程的顺利衔接提供参考。

基于CDIO工程教育理念的机电设备维修技术课程教学改革

基于CDIO工程教育理念,针对现阶段机电设备维修技术课程教学过程中存在的问题,以项目实践为载体,以提升学生的专业知识水平、工程能力和职业素质为目标,按照由浅入深、由易到难的原则,参照机电设备维修岗位需求,对接“金专、金课、金师、金地、金教材”建设标准,将工程能力培养和思政育人贯穿教学全过程,进行了该课程教学模式的创新。教学实践证明,学生的故障分析能力、故障排除能力提升明显,有效完成了课程教学的多样化转变,实现了专业学习与岗位实践的无缝对接。

基于生态设计原则与生命周期评估的可持续性机械设计

面对全球可持续发展的挑战机械设计需转型以降低环境影响并提升资源效率。探讨生态设计原则与生命周期评估(LCA)在实现设计可持续性中的应用。首先强调在设计初期考虑材料选择、能源效率和系统整合等生态原则的重要性。接着,通过LCA工具量化从原材料到废弃各阶段的环境影响,案例分析展示如何根据LCA结果优化设计。最后讨论实施中的挑战与对策,工程领域的可持续性设计提供策略和参考。

工程领域紧缺人才培养与新工科专业建设

加强专业建设既是高校适应工程领域紧缺人才培养规律的客观要求,也是落实国家紧缺人才发展战略的实践行动。但由于受需求紧迫性与急功近利心态的影响,工程领域紧缺人才专业建设存在粗放式发展、跟风式设置、学科规训惯性、保障机制不健全等问题。实践中的关键问题要妥善处理紧缺人才培养的数量与质量,短期效益与长远效应,专业技能与综合素养之间的关系,构建新工科“大专业”建设模式。同时,要通过优化政府治理方式,重塑企业角色和行为模式,完善高校人才培养治理体系,健全工程领域紧缺人才专业建设的保障机制。

高速公路机电安装工程施工技术及质量控制

对高速公路机电安装工程施工技术进行深入分析,包括电气系统施工技术、通信系统施工技术、智能交通系统施工技术,从施工前的质量控制准备、施工中的质量控制措施、施工后的质量验收与保障3个方面总结了高速公路机电安装工程的质量控制思路。

高职工科类专业建设与区域产业集群的协同机制研究——以唐山市机器人市域产教联合体为例

高职教育发展对应于区域产业结构和产业集群的发展,肩负着为地方经济发展和产业结构转型升级服务的使命。从唐山市域机器人产业集群的典型特征和内在产业发展逻辑出发,对唐山市域高职院校工科机器人相关专业展开研究,构建工科类专业与产业集群耦合度评价指标体系并涵盖评价维度和每个维度下的指标,提出了高职教育与产业集群协同发展的机制与路径,以及在协同过程中可能遇到的挑战和应对策略。

关于技能大赛引导中职机电专业教学改革的思考

技能大赛作为一个具有竞争性和实践性的平台,为学生提供了展示自己技能的机会,促使学生主动参与到实践中。通过参与技能大赛,学生可以接触到更多真实的工作场景,面对实际问题进行解决,从而提高实践能力和动手能力。本文通过分析技能大赛在职业中专机电专业教学改革中的作用,提出了一些有效的方法和策略。通过技能大赛,可以引导学生参与实践,培养实际操作能力,加强理论知识与实践的结合,促进学校教学改革和学生综合素质的提升。