施工升降机的创新设计英文介绍.doc

The Innovative Design of Construct Hoist Jia Wenhua,Yin Chenbo Institute of Automobile and Construction Machinery,Nanjing University of technology,Nanjing 210009,P.R.China Abstract In this paper,the current development of construction hoist is reviewed.The structure and the characteristics of the construction hoist are described.The key technologies such as the structure of the diversity of the construction,the traction-lift construction,the integrated winch system and the computer aided design are discussed. Keywords Construction machinery hoist;Innovative design; Electro-hydraulic. 1 Introduction The construction hoist is a kind of mechanical machinery used to lift passengers and materials along the vertical or rail-dumping mast.It is composed of platforms,hopper ,cage and so on. It can help to improve productivity and reduce costs. To meet the needs of different kinds of constructions,many new types of construction hoists have sprung up which have advanced functions. 2 Innovative design of structure 2.1 Common structure Construction hoists can be divided into four types according to the number of cage and mast. Their relative position is shown in Fig.1. a b c d double mast and single cage Single mast and cages on both sides (c) Single mast and a cages in one side (d) Single mast and a cage inside Fig.1 Common structure diagram The hoists have been widely applied in construction to enhance productivity and construction costs greatly. The standard sections of hoists with either single mast sections or double mast sections are all connected by bolts,and fixed on the wall by connections.There are mechanical springs fixed on the bottom frame of this in order to increase the reliabilities. 2.2 Several new types of structure The tilt hoist has rail-dumping masts,which can be applied where the building is not vertical.Its mast is parallel to the fade of buildings.It is widely used for chimneys,towers,