主臂

其吨位已经达到千吨级，主臂起升高度达到百米以上，其中超起装置的应用对此发挥了重要作用。

Tonnage has reached thousand tons , and main boom lifting height reaches more than hundred meters .

结论吊重起升加速度对起重机动载荷的影响较大，特别对主臂内的动弯矩的激励更加明显。

The influence of load hoisting acceleration on dynamic forces is obvious , especially on dynamic bending moment of the main boom .

80t履带起重机主臂架有限元分析

Finite element analysis of 80t crawler crane main jib

船用起重机的主臂强度校核方法研究

Study on Strength Checking Method to Primarily Arms of Marine Cranes

门座式起重机主臂架折断的原因分析

Cause Analysis of a Fracture of the Portal Crane Main Jib

关于港口门座起重机主臂架失稳控制的探讨

Inquiry on the Stability Control of the Main Boom of Portal Crane

MQ16&30型门座起重机主臂架弯折原因的分析

Reason of Main Boom of MQ 16 & 30 Gantry Crane Bending

DBQ3000型塔机主臂杆纵向闭合裂纹强度的研究

The Crack Strength Analysis for the Main Arm of DBQ-3000 Tower Crane

能实时对主臂仰角、起吊高度和起升绳拉力进行测量；

Can measure lift angle , lift height and lift force in real time ;

塔机主臂杆三维裂纹应力强度因子的计算

Computation of Stress Intensity Factors of the Main Arm of Tower Crane with 3-D Cracks

对主臂，副臂进行了有限元动力学分析，得到了一系列的信息。

Through dynamics analysis and finite element analysis , It can obtain a series of information .

艏摇的存在会明显的衰减尾柄主臂和尾鳍攻角的角位移。

The yawing can apparently attenuate the angular displacement of both the tail and the attack angle of tail fin .

分别在主臂伸缩和塔臂变幅控制系统中加入定量顺馈补偿复合校正环节，以消除斜坡响应的系统稳态误差，提高系统的响应性能。

Quantitative feed-forward compensation composite correction link is added to the system to eliminate the steady state error with ramp response .

为实现起重机大起升高度和大幅度，主臂与副臂的组合方式得到了广泛应用。

The combination of main boom and tower jib has been widely used for large lifting height and workable radius of the crane .

主要工作内容如下：（1）超起主臂系统建模求解。根据全地面起重机超起主臂系统的力学特性，分析了其非线性影响因素。

Main work content is as follows : ( 1 ) According to the mechanical properties of the boom system on the all terrain crane , nonlinear influence factors are analyzed .

大吨位全地面起重机臂架组合的多样性以及现场存在各种不确定因素，给塔臂工况下的主臂伸缩控制带来了挑战。

The diversity of the boom combination of the large tonnage all-terrain crane boom and uncertainties of the site make challenge for the control of main arm telescopic with the tower arm condition .

为了减少危险工况带来的事故，提高全地面起重机的可靠性和作业安全性，一般施工现场对于塔臂工况下的主臂伸缩采用手动控制。

To avoid the dangerous working conditions , improve reliability and operational safety of the all-terrain crane , the main arm telescopic with the tower arm condition uses manual control at construction site .

针对以上问题，本文应用MATLAB/Simulink软件建立主臂伸缩和塔臂变幅双机构动作协同控制的仿真模型，分析不同控制方法的仿真效果。

To solve the problems above , this paper establishes the main arm telescopic and the tower arm luffing simulation model with MATLAB / Simulink and analyzes the control effect of different control methods .

针对我国港口和电厂煤码头多次门机主臂架折断事故，从现象分析入手，确定其均为局部失稳而引起整体破坏。

The analysis made in the paper shows that many accidents on the portal cranes furnished to the harbours and power plant coal wharfs in China are caused by the buckling in their main jibs .

然后通过算例定量分析了索长变化对臂架起重性能的影响规律，从而找出各主臂长度下的最优拉索长度，并通过此长度反算出预紧角度和预紧力。

Quantitative analysis by examples is done to study the influence of the guy-rope length changes on the lifting performance of boom , thus finding out the optimal length of the guy-rope corresponding to each boom length .

超起装置安装在主臂上，连接着臂头和臂尾，与主臂组成了空间二次超静定结构。

The application of guying device has played an important role , which is installed on the main boom , connecting the head and tail . The guying device composites the space secondary statically indeterminate structure with the main boom .

主要工作：论文分析执行机构主要动作：主臂升降、副臂收放、伸缩臂伸缩、伐木头工作、工作臂回转以及其它辅助动作。

The main works are listed as follew : The major action of executive mechanism were analyzed in this dissertation , which include boom lift , jib deploying and retracting , telescopic expansion , harvester head working , working arm rotation and other secondary action .

通过应用液压系统基本原理，对采煤取样机主臂液压系统的故障现象进行了分析，找出了系统设计中存在的缺陷，制定了维修方案，使故障消除，生产顺行。

Based on the basic theory of hydraulic system , the trouble of hydraulic system of main arm for coal sampler is analyzed to find out the defects in the design and make out the maintenance schedule , thus the trouble removed and production going smoothly .

研究了以拉索长度为变量，以主臂整体应力和臂架整体稳定性共同决定的起重性能为评价准则，进行最优索长计算的超起拉索预紧计算方法。

This paper establishes a set of calculation method which makes guy-rope length as a variable , takes the main boom stress and the boom overall stability as the evaluation criterion , to analyze and research the influence that guy-rope length changes on the boom lifting performance .

本文就碎石器的冲击反力、主臂应力进行了理论分析，并对在碎石器连接座上设有橡胶缓冲装置的碎石机主臂强度进行了测试研究。

This paper presents a theoretical analysis on the percussion counter-force of the breaker as well as the stress on its main boom . An experimental study is made of the strength of the main boom with a rubber buffer being installed on the breaker connection seat .

进行了从操作臂对主操作臂的位置跟踪性能实验。

Position tracking experiment between the desired trajectory commanded by the master manipulator and the actual trajectory of the slave manipulator is carried out .

一种大功率快速装卸装置，其包括，带主立臂和摆臂的履带式挖掘机；

A high-power rapid handling device comprises a caterpillar excavator with a main vertical arm and a swinging arm , and accessory mechanisms installed at the end of the swinging arm .

挖掘机工作装置上的主、副臂液压缸最大受力位置，以往是通过定性分析确定。

The conventional method to determine the loading position on the hydraulic cylinder of main and auxiliary boom of weight-lifting attachment on excavator is qualitative analysis .

设计了一种可用于伸缩式主副钻臂的回转机构，该机构采用了螺旋回转液压缸，不仅能使钻臂在一定范围内伸缩，而且还可实现360°的回转。

A rotating mechanism is designed for the main telescopic drill arm and its auxiliary arm . A hydraulic spiral rotation cylinder is adopted in the mechanism , which not only enables the arm to telescope in some extent but also to rotate in 360 ° .

弧门门形框架主横梁与支臂单位刚度比合理取值范围的研究

Study on rational scope of unit rigidity ratio of main transverse girder to bearing arm of Π shaped frame for radial gate