架杆

空间刚架杆内力的微分关系

Differential coefficient of internal force of spatial rigid frame pole

本文介绍如何拆下集材拖拉机搭载板，安装架杆，利用绞盘机、钢索及架杆滑轮装卸货物。

This paper introduces how to dismantle yarding tractor loading board , install trestle pole and use tightwire and chain wheel to load and unload cargo .

提出了通过对连架杆摆角算子进行快速Fourier变换（简称FFT），建立其数值图谱库，经过模糊识别进行连杆轨迹尺度综合的方法；

By means of conducting Fast Fourier Transformation ( FFT in short ) on side link swinging angle operator to build its numerical atlas library and through fuzzy recognition a method is put forward for carrying out dimension synthesis of track of connecting rod .

为RSSR和RSSP型空间机构及转向机构，导出了两连架杆的位移关系式和确定机构特殊位置的公式；

For RSSR and RSSP spatial linkages and steering linkages , the relations between displacements of side bars and the equations determining the particular positions of the linkages are derived ;

确定平面机构自由度的新方法&逐次设定连架杆法

A new method of determining the degree of freedoms of planar mechanism

实现连架杆给定角位移的机构综合方法

Synthesis Method for Planar Four-bar Linkages Given Angle Displacements of Rotating Links

给定连架杆对应多位置时的四杆机构综合

Synthesis of Four Bar Linkage Mechanism for Crank or Rocker Given Multiple Position

A形排架杆件内力简化计算法

Simplified Calculating Method for Internal Forces of A-Shape Rigid Frames for Supporting Aqueduct

多边形余弦公式及其在建立连杆机构连架杆的位移方程中的应用

The Cosine Formula of Polygon and Its Application in the Establishment of the DisPlacement Equation of the Linkage

对原动件为非连架杆的平面机构的分析研究钢绞线组装件动载试验

Analysis on Planar Mechanism of Motive Member Used Unside Link Dynamic Loading Test of the Strand Cable Installations

按两连架杆对应角位移设计四杆机构的又一解析法

An analytical method to design the four-bar linkage for specific corresponding angular displacement of input and output links

讨论了机构的连杆轨迹与连架杆摆角算子之间的内在联系；

The internal relations between the coupler path and Side Link Swing-Angle Operator ( in short , SLSAO ) are discussed .

通过调节连架杆的长度，可以实现不同任务的刚体导引综合。

The rigid-body guidance synthesis with different tasks can be realized by means of adjusting the length of frame linking rod .

以非常直观的方法，分别就两连架杆作整周运动的情况，推导了平面铰链四杆机构具有单曲柄与双曲柄的条件，并对其特例在天平、升降机方面的应用进行了讨论。

This paper deals with the conditions of the plane hinge four-bar mechanism with single crank and double cranks , and discusses the usage .

利用转化机架法，将按预定连架杆构件位置的四杆机构设计问题，转化为按预定连杆位置设计四杆机构问题。

In this paper , an analytic method to design the plane four-bar linkage mechanism according to three predetermined locations of framed link is introduced .

用解析法设计函数生成机构，要解决的关键问题是两连架杆位置方程式的求解。

The key problem to be solved in establishing function resultant mechanism by analytic method is to calculate the equation of two connected rod clevis .

接着，给出确定各种类型五杆机构两连架杆转角空间的数值算法。

The rotational ranges of the two side links for each type of the mechanism are analyzed , and the corresponding numerical algorithm is developed .

本文介绍的实现两连架杆对应角位移四杆机构的解析法设计，是根据等视角作图法原理建立起来的又一种解析方法。

In this paper , an analytical method to design the four-bar linkage for specfic corresponding angular displacement of input and output links is introduced .

平面五杆机构是平面并联机械手的最基本形式，对其两连架杆转角空间及连杆点工作空间的研究是设计平面并联机械手的基本问题之一。

Their joint rotation space ( JRS ) of both side bars and workspace of coupler points are basic issues in designing planar parallel manipulators .

结果表明：墙架杆件截面发生局部屈曲和扭转变形是影响这类墙架受剪承载力的主要因素；

The results indicated that local buckling and torsion failure of wall member sections were the main factors affecting the ultimate shear capacity of the wall ;

根据以机构极端位置建模导出的曲柄存在条件，应用机架变换法导出了两自由度铰链五杆机构（不论连架杆是否为主动件）的全部类型。

According to the condition of crank existence , all types of 5-bar linkage with 2-degree of freedom are synthesized by linkage mould in extreme position .

第四章以连杆两位置四杆机构设计案例和连架杆两位置四杆机构设计案例强调了图解法在产品设计中的作用。

Chapter IV emphasizes the effects of Graphic Methods on the product design by the cases of 2-position mechanism design of coupler and 2-position mechanism design of side link .

提出了一种计算A形排架杆件轴力的通用公式，应用此公式可避免求解各结点的静力平衡方程组，直接计算任意杆件的轴力。

This paper introduced a formula for calculating axial forces of A-shape aqueduct frames by which could directly calculate the axial forces of each joint without static force balance equations .

根据改变曲柄摇杆机构中机架杆的长度可获得摇杆不同的位移输出这一特性，设计了动态纬密变换器。

Designs a dynamic weft density convertor based on the characteristics of a crank lever mechanism , that the lever displacements can be given by changing the length of the frame bar .

此外，还讨论了加载过程中钢筋混凝土刚架杆端塑性饺的性能，给出了计算等效塑性铰长度的经验公式。

Besides , the behaviour of plastic hinge at the member end of RC frame in process of loading is discussed and the empirical formula for calculating the equivalent length of plastic hinge is also given .

提出了基于两个类Ⅱ级杆组和两连架杆+Ⅱ级杆组五杆机构的基本型构成方法，推导出五杆机构共计有13种基本型；

Based on two similar Class ⅱ bar groups and two framed links + Class ⅱ bar groups , this paper presents the construction methods of the basic types of the five-bar mechanism , and deduces 13 basic types of the five-bar mechanism ;

应用隐函数定理，推导出平面闭链五杆机构柔性工作空间边界的条件，即输出杆与相连的连架杆共线及另一连架杆与相连的连杆共线。

By using the implicit function theorem , the condition of flexible workspace boundary of a plane closed loop five bar mechanism was derived . The output bar and conjoint side link are collinear , and the other coupler and conjoint side link are collinear .

在求解两连架杆五个位置方程式时，采用的方法是先取三个方程推导出有关参数表达式，代入另两个方程，用限制计算精度的方法求解。

In the process of finding a solution to the equation of linking five positions , the method is used to choose three equations to infer equations with relative parameters , introduce them to the other equations , and solves the equation by using limit precision of calculation .

变截面门式钢刚架结构杆件单元刚度矩阵近似计算

Approximate Calculation on Elemental Stiffness Matrix for Poles of Steel Portal Frame

转向架交叉杆冷冲压动态显式有限元分析

Dynamic Indicated FE Analysis of Cold Forging Crossing Rod of Revolving Support