关键词： 机械工程系   机械动力学   机械学   数控机床   中国振动工程学会   多体系统动力学   中国机械工程学会   河北工业大学   社会兼职   天津大学   北洋大学   动态信号分析   专家  

摘要： 刘又午,男,1930年12月9日生于北京。1951年　月毕业于南开大学机械工程系。现任天津大学机械工程学院教授、博士生导师。社会兼职有中国机械工程学会生产工程分会常务理事;中国振动工程学会动态信号分析分会常务委员;全国机械控制工程研究学会副理事长;河北工业大学兼职教...

关键词： 平衡   矿物油   联轴器   石油工业   动力传输   定义   杠杆   天然气工业   离合器   工业   石油   规范   天然气   机械驱动  

标准号: ISO 10441-1999

摘要： 1 This International Standard specifies the requirements for couplings for the transmission of power between the rotating shafts of two machines for service in special purpose applications in the petroleum and natural gas industries. Such applications will typically be in large and/or high speed machines in services that may be required to operate continuously for extended periods, are often unspared and are critical to the continued operation of the installation. By agreement, it may be used to apply to other services. NOTE Couplings for general purpose, less critical applications are covered in ISO 14691. 2 Couplings covered by this International Standard are designed to accommodate parallel (or lateral) offset, angular misalignment and axial displacement of the shafts without imposing unacceptable mechanical loading on the coupled machines. It is applicable to gear, metallic flexible-element, quillshaft and torsionally resilient-type couplings. It is not applicable to other types, such as clutch, hydraulic, eddy-current, rigid, radial spline, chain and bellows types. 3 This International Standard is applicable to the design, materials of construction, manufacturing quality, inspection and testing of couplings. It does not include criteria for the selection of coupling types for specific applications. NOTE It is strongly recommended that, when users fit new couplings to existing equipment, which are different from those originally fitted, they consult the vendor who originally had unit responsibilty for the equipment train, to ensure proper application of this International Standard. It will generally be necessary to recalculate the rotor dynamics of the train.

关键词： 高等专科学校   黄石   湖北  

关键词： 农业机械   布置   前置悬挂装置   规范(验收)   保护设备   定义   安全要求   动力输出   农业工程   旋转速度   牵引车   尺寸   三点悬挂装置  

标准号: DIN ISO 8759-1-1999

ISBN: (纸本)7030072758

关键词： 柴油机   压燃发动机   C6121   缸套   工程机械  

关键词： 天然气   机械驱动   生产试验   动力传动工程   工业   质量保证   规范   质量控制   设计   石油工业   载荷传送   商家   定义   多语种的   离合器   天然气工业   燃气   技术数据单   矿物油   石油   联轴器   消费者与供货者的关系   平衡   动力传输   定货人   汽油  

标准号: ISO 14691-1999

摘要： 1 This International Standard specifies the requirements for couplings for the transmission of power between the rotating shafts of two machines for general purpose applications in the petroleum and natural gas industries. Such applications typically require couplings to transmit power at speeds not exceeding 4 000 r/min, between machines in which the first lateral critical speed is above the running speed range (stiff-shaft machines). It may, by agreement, be used for applications outside these limits. 2 This International Standard is applicable to couplings designed to accommodate parallel (or lateral) offset, angular misalignment and axial displacement of the shafts without imposing excessive mechanical loading on the coupled machines. Couplings covered include gear (and other mechanical contact types), metallic flexible-element and various elastomeric types. Special types such as clutch, hydraulic, eddy-current, rigid, radial spline and universal joint types, are not covered. 3 This International Standard covers design, materials of construction, inspection and testing of couplings and methods of attachment of the coupling to the shafts (including tapered sleeve and other proprietary devices). This International Standard does not define criteria for the selection of coupling types for specific applications. 4 It is recommended that, when users fit new couplings to existing equipment which are different from those originally fitted, they consult the manufacturers of the driving or driven equipment. NOTE 1 In many cases, couplings covered by this International Standard are manufacturer's catalogue items. NOTE 2 For the following applications, the use of ISO 10441 is recommended: — large or high-speed machines that may be required to operate continuously for extended periods, are often unspared and are critical to the continued operation of the installation (special purpose applications); — machines in which the first lateral critical speed is less than the maximum

关键词： 便携的   手工工具   机床   气动设备   位置   液压设备   负荷测量   振动   传感器   试验设备   剪床   手柄(工具)   电驱动装置  

标准号: BS EN ISO 8662-10-1998

摘要： This part of ISO 8662 specifies a laboratory method of measuring the vibrations at the handles of hand-held pneumatically or hydraulically driven nibblers and shears. It is a type-test procedure for establishing the vibration value at the handles of the power tool when operating on a specified load. It is intended that the results be used to compare different power tools or different models of the same type of power tool. With the operation specified for the power tools, the values obtained will give an indication of those found in real work situations.

关键词： 锅驼机   农用动力机   山东机器局   铁工厂   主要燃料   供矿   动力机械   博山   蒸气机   蒸汽锅炉  

摘要： 锅驼机是由蒸汽锅炉与蒸气机联为一体,以煤为主要燃料的小型动力机械。本世纪初,山东机器局即开始制造。20年代,济南、博山的一些铁工厂已小批量生产,供矿山、工厂作动力。1956年开始大批量生产,主要有3.8kW(5马力)、

关键词： 空间机械臂   多体动力学   逐次近似   非线性  

摘要： 本文建立空间机械臂系统非完整约束方程及非一性动力学方程。利用逐次近似法讨论了机械臂结构弹性对负载位姿的影响，提出消除弹性影响的控制方法。运用Ｐｏｎｔｒｙｕａｇｉｎ极值原理寻求最小控制力矩及抑制弹性振动的控制规律，数值模拟结果表明本文提出方法的有效性。