QBZ动力载波装置在综采工作面的应用

综采面采煤机与磁力启动器之间的多芯电缆在使用中经常发生折断或其他故障,严重影响采煤机工作。基于上述问题,平煤五矿引进了QBZ动力载波装置,并将其应用到采煤机控制系统中。阐述了QBZ动力载波装置的工作原理、控制原理和地面试验情况,并对试验、应用效果进行了详尽的分析。实践证明,该动力载波系统可靠性高,减少了电缆费用支出,确保了生产的连续性。     

动力载波控制接收机限幅干扰分析

通过对载波接收机限幅干扰分析 ,提出电路改进的办法。     

动力线载波模块在采煤机控制中的应用

从采煤机动力线载波控制解决方案入手,通过理论分析与现场应用相结合,为动力载波模块的使用与安装提出了相应的建议,具有借鉴参考意义。     

新型滚筒采煤机的使用效果

<正> 一、前言太平洋煤矿自1967年到现在二十年来,采用掩护式支架和双滚筒采煤机配套的SD采煤方式,保证了高效率和稳定出煤。目前在煤炭工业不景气的情况下,太平洋煤矿要长期生存下去,就必须在确立稳定的生产体制,保证安全的同时,还要改革生产结构,改革劳动状态,降低成本。充分利用SD采煤技术,研制高性能的新型SD设备,促进生产结构的改造。这次研制的新型滚筒采煤机,向高性能设备迈进了一步,并已在现场使用,下面介绍其概要。     

装有新型喷雾装置的采煤机球型滚筒的研制和使用

<正> 萨尔煤矿公司同克鲁门奥尔公司进行了合作,对几年来在研制和试验不同类型采煤机滚筒的过程中所取得的经验作进一步考察,根据考察中取得的多种见解,决定研制一种新型的采煤机滚筒,即装有喷雾装置的球形滚筒。常规的采煤机滚筒和球形滚筒的主要特点如图1所示。     

爬底板双滚筒采煤机新型液压锁的研制

本文介绍了爬底板双滚筒采煤机新型液压锁的结构特点、工作原理、实验系统及实验过程。实验结果表明,该液压锁具有锁紧和浮动两种功能,适用于极薄煤层采煤机调高系统。     

采煤机新型螺旋滚筒结构形式探讨

根据采煤机螺旋滚筒截煤和装煤特点，分析了现有滚筒存在的主要问题，探讨了新型螺旋滚筒的具体结构及优点．     

采煤机过构造专用滚筒研制

通过总结采煤机滚筒过构造时所面临的问题,分析滚筒容易损坏的原因,针对过构造地质的特殊要求对滚筒进行优化设计,为采煤机过地质构造提供了可行的技术途径。     

采煤机位置监测装置的原理与应用

介绍了自动化采煤工作面的关键技术之一──采煤机位置监测装置的主要功能、组成、工作原理以及应用。该装置具有采集采煤机位置及方向的信息数据功能,通过校正传感器能校正位置数据的误差,装置中发射机与接收机通讯采用无线传输,结构简单,性能可靠。     

矿用动力载波在交流变频电牵引采煤机上的改进与应用

本文介绍了将动力载波仪进行技术改造后,应用于交流变频电牵引采煤机上,替代信号芯线来控制采煤机的方法和措施。     

58大功率多电压组合负荷中心在连采工作面的应用

神东矿区连采工作面设备种类较多,电压等级不同,将干式多电压组合变电站及大功率组合开关进行组合,优化设计,实现多回路多电压输出,适应不同电压等级用电设备需要。     

电磁调速电牵引采煤机工业性试验及改进措施

介绍了国内首台ＭＧ６６８ＷＤ型电磁调速电牵引采煤机的主要性能特点，在工业性试验中出现的主要问题与改进措施。     

CLG300露天采煤机截割功率参数设计

在分析CLG3 0 0露采机截割机理与开采工况的基础上 ,参照并借鉴井下采煤机相关的设计计算公式与经验 ,对露采机的截割功率参数设计进行了探讨。     

矿山电力负荷分类及供电要求探析

该文分析了矿山生产环境、煤矿电力负荷分类及供电电压等级,探讨了煤矿企业对矿山供电的特殊要求,认为在保证安全生产和安全用电的前提下,尽可能地使系统结构简单,便于安装,易于操作。     

电力系统潮流计算的教学软件开发

主要针对大电网，多节点，复杂电力系统的潮流计算。采用迭代法，通过建立矩阵的修正方程来依次迭代，逐步逼近真值来计算出电力网的电压、功率分布，并介绍了用牛顿一拉夫逊方法实现电力系统潮流计算的教学软件特点及实现过程，此软件可用于教学、供电系统岗位的培训。     

The new approaches in a process engineering high power microwaves diodes millimeter wave band

The reachings in the field of deriving modern materials of a microelectronics engineering are especially effective, when the process engineering of manufacture of the concrete device allows maximum to realize the resources, included in active structure.In the report the outcomes of results on a considerable diminution of thermal restrictions generating impatt diodes millimeter (mm) wave band are submitted with the purpose of improving exit pupils and reliability. The complex of original design technological receptions has allowed to solve a problem of making multimesa wave band structures, in which the thermal resistance is possible to reduce in inverse proportion√n,where n-number of mesa structures. The sectional process engineering has general purpose character and is applicable to the most composite materials in particular to heterostrucructures and all types of made on their bases microwaves diodes containing a mesa structure. The results are illustrated on silicon double drift six mesa structure 5 mm wave band for which the level of an output continuous power 1.04watts on frequency 65.9 GH2 is obtained. Thus p-n junction temperature did not exceed 220℃ usual copper heatsink also was utillized. The electronic snapshots and outcomes of investigation of thermal fields silicon mesa diodes of a various configuration are reduced: to six mesa, eight mesa, ring.Singularity of a sectional process engineering are higher specific mechanical loadings at assembly of devices, therefore with the purpose of a raise of reliability and percent of an exit of suitable devices designed and the procedure permitting to inspect on starting plates amplitude and a strain gradient in active region is tested X-ray diffraction method that is especially important for heterostructure mesa diodes.     

The new approaches in a process engineering high power microwaves diodes millimeter wave band

The reachings in the field of deriving modern materials of a microelectronics engineering are especially effective, when the process engineering of manufacture of the concrete device allows maximum to realize the resources, included in active structure.In the report the outcomes of results on a considerable diminution of thermal restrictions generating impatt diodes millimeter (mm) wave band are submitted with the purpose of improving exit pupils and reliability. The complex of original design technological receptions has allowed to solve a problem of making multimesa wave band structures, in which the thermal resistance is possible to reduce in inverse proportion√n,where n-number of mesa structures. The sectional process engineering has general purpose character and is applicable to the most composite materials in particular to heterostrucructures and all types of made on their bases microwaves diodes containing a mesa structure. The results are illustrated on silicon double drift six mesa structure 5 mm wave band for which the level of an output continuous power 1.04watts on frequency 65.9 GH2 is obtained. Thus p-n junction temperature did not exceed 220℃ usual copper heatsink also was utillized. The electronic snapshots and outcomes of investigation of thermal fields silicon mesa diodes of a various configuration are reduced: to six mesa, eight mesa, ring.Singularity of a sectional process engineering are higher specific mechanical loadings at assembly of devices, therefore with the purpose of a raise of reliability and percent of an exit of suitable devices designed and the procedure permitting to inspect on starting plates amplitude and a strain gradient in active region is tested X-ray diffraction method that is especially important for heterostructure mesa diodes.     

矿工职业心理健康管理体系构建与应用研究

本文探析了矿工职业心理健康内涵,阐明了矿工职业心理健康在个体心理、组织管理、作业环境等方面的主要影响因素,创新构建了包括目标计划、测评管理、风险辨识、风险预警、风险控制、信息管理、保障管理、检查改进等模块的矿工职业心理健康管理体系;选择煤矿企业作为代表,进行管理体系实践应用,找出职业心理健康管理方面存在的问题,提出并实施改进对策措施,通过实践应用,切实提升了企业职业安全健康管理水平,职工“三违”发生率明显下降,全员工效进一步提高。研究结果为矿业企业提供了参考,有利于保障广大职工的身心健康和企业的安全健康发展。