GUANGZHOU GONGYOU LIFTING SLINGS CO., LTD is developed from former GUANGZHOU GONGYOU LIFTING FACTORY, It is a modern enterprise in manufacturing of chian hoist, lever hoist, electric hoist, steel wire-sling, lifting-sling, all kinds of turnbuckle, shackle, webbing slings, jack, We have handled the product over 20years.
广州工友起重索具有限公司的前身是广州工友起重设备厂，主要以生产系列手拉葫芦、手扳葫芦、电动葫芦、钢丝绳吊索、吊装带成套索具、链条吊索及配套产品的现代化制造企业，年生产能力已达20多万台。
Our main productions are (0.3-250t) pulley, (0.5-20t) chain block, (0.5-5t) lever block, (0.5-10t) electric block, all kinds of jacks such as hydraulic bottle jack, long ram jack, ratchet buckle, hand puller, lifting riggings, chain, and hook series, etc.
手拉葫芦，（0.5-5吨）手扳葫芦，（0.5-10吨）电动葫芦，安全带脚扣，紧线器，吊索具等起重工具。
In the light of 500 kV HVAC and HVDC, especially the problems of heavy line-lifting tool and very hugh labour intensity during live replacing the twin suspension insulator strings with single wire clip of straight circuit for heavy load HVDC, a built-up fork hook based on lever principle was developed instead of the taditional process, the double lifting lines.
针对500 kV交、直流输电线路，特别是大荷载直流输电线路直路双联单线夹悬垂绝缘子串的带电更换时，双提线工艺工具沉重，操作劳动强度极大的问题，提出利用杠杆原理研制组合杠杆叉钩卡代替双提线传统工艺，采用单绝缘吊杆挂接组合杠杆叉钩卡组成提线系统，卸去任意一串绝缘子的张力后，另一串绝缘子和提线系统共用承担导线荷载。
Based on the cylinder backward push lever lifting mechanism, this paper discusses the constrained conditions mainly including the construction constraints, the property constraints of transmission and oil pressure, etc. in optimal design for the lifting mechanism of dump truck.
以油缸后推杠杆平衡式举升机构为例，对自卸汽车举升机构优化设计的约束条件进行了讨论，主要阐述了结构约束、传动性约束以及油压特性约束等。
Kinematic Analysis on A Lever Balanced Type Lifting Mechanism for Dump Truck
自卸汽车杠杆平衡式举升机构的运动分析
The function of the mold lifting gear is that makes the elbow piece mold promotion or drop, therefore, we designed that was made by the locating cylinder, the release lever, and the base, provided the power by the hydraulic pump, transmited by the release lever, then makes the elbow piece mold promotion and drop.
模子提升装置主要作用是使弯管模具提升或下降，因此，我们设计出其结构主要由定位油缸、杠杆、和机架组成，由液压泵提供动力，由杠杆传递，满足使弯管模的提升。
The Control Circuit Improvement on Lifting Lever of Chamber-mill Classifier in Bayer Process
拜尔法格子磨分级机提升杆控制回路的改进
Lifting Simply-Supported Beam (Slab) with The Lever Method
用杠杆法顶升简支梁（板）桥
The lifting mechanism is pushing-lever combined, while the slewing mechanism is four-bar which drived by fluid cylinder and the swiveling table is similar to rolling bearing.
抛矸皮带机的举升机构采用前推连杆组合式，而回转驱动机构采用液压缸驱动的四连杆机构，回转工作台采用三排滚柱的滚动轴承式。
The constitution of TML, its main technical parameters and lever lifting structure are illustrated and the construction process is emphasized.
文章介绍了TML的组成、主要技术参数和杠杆起重机构，并重点描述了TML的施工过程。