塔式起重机外文文献翻译、中英文翻译

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英文原文

Tower Crane

Boom mounted on the upper part of the rotation of the tall tower crane. Operating a large space,

mainly used for housing construction materials in the vertical and horizontal transportation and

installation of building components. From the metal structure, working bodies and the electrical

system consists of three parts. Metal structure including the tower moving arms and base and so

on. The work of organizations including lifting,luffing, slewing and walking four parts. Electrical

systems including motors, controllers, power distribution cabinets, connection lines, signals and

lighting devices.

Short tower crane tower crane, also known as tower crane, originated in Western Europe.

According to records, the first tower crane used in construction related to the patent granted in

1900. Emerged in 1905 with a fixed jib tower crane, and in 1923 produced the prototype of

modern tower crane, in the same year the first relatively complete modern tower crane. 1930,

when Germany began mass production of tower cranes, and used for building construction. In

1941, the tower crane industry standard DIN8770 published in Germany. The standard provides

for crane set (t) and amplitude (m) of the product (tm) together to re-torque, said the tower crane

lifting capacity.

China tower crane industry in the 20th century, 50 years started, as opposed to the Western

European countries due to weakness in the construction industry caused by the tower crane

industry in recession, Shanghai Poch Drive System Co., Ltd. tower crane industry in China is in a

rapid period of development .

From the tower crane in terms of technological development, while an endless stream of new

products, new products in the production efficiency, easy operation, and maintenance easier and

more reliable operation in the increase in the tower crane, but there is no fundamental change in

the technology. The tower crane research is towards modular development. The so-called modular,

that is, to the tower structure as the core, according to structural and functional characteristics of

the shaft broken down into several parts, and on the basis of seriation and general requirements,

follow the modulus of the various parts of the system theory and then divided into a number of

modules. According to parameters required, choose the appropriate modules were grouped with

different performance characteristics of the tower crane technology to meet the specific needs of

the construction. The implementation of modular tower crane tower crane production capacity will

help to speed up the development progress of Lu, save product development costs, and better for

customer service.

Slewing tower crane be divided into upper and lower rotary tower crane tower crane two broad

categories. In which the carrying capacity of the former than the latter, in many we have seen the

construction site is on a rotary festival add up on top of a high tower crane access. According to

whether the move is further divided into: walking a line, and fixed. Fixed the fixed tower crane

tower do not switch installed in the concrete block foundation, or installed in the form of X-

shaped concrete foundation. In the housing construction generally use a fixed style.

Device characteristics and safety devices

Tower crane boom and struts form of sub-horizontal type two kinds. For the horizontal boom, the

load car runs along the level luffing boom, luffing movement balance, its long boom, but the

greater weight boom. Boom for the strut-type when the tractor boom luffing mechanism Pitch

amplitude, amplitude motion than horizontal steady, but its relatively small weight.

In order to ensure the safety of tower crane has a good safety device, such as starting weight,

range, height and load torque constraints such devices, as well as the travel limit switches, tower

lights, wind instrument, wind clip-rail device, Ladders and athletic supporter circle, walkways and

railings. Driver's cab demand for comfort, easy operation, good vision and good communications

equipment.

Production points of the inspection of tower cranes

1) Check the structural condition of metal, especially high-strength bolts, which connect the

surface to be cleared of dust, paint, no trace, and rust, and the use of hand or special torque

wrench, according to assembly requirements tightened.

2) Check the transmission of various agencies, including the work of transmission suitability of

the bearing clearance, the gear mesh is not good and the brake is sensitive.

3) Check the wear of steel wire rope and pulleys, fixed is reliable.

4) Check the electrical components are good contact points of the closure were the extent of

follow-correct and reliable.

5) Check whether the running wheel and rail access to good, clip-rail clamp is reliable. The

installation of attachment devices, within the climbing device, the connecting bolts and the clip

block is solid and reliable.

Used tower crane

The following specific description in several aspects of the tower crane used room Jianzhong.

(A), the tower crane metal structure

The metal structure is composed of tower crane boom, tower, turret, bearings, balance arm,

chassis, composed of apex.

Construction boom level luffing jib type of car, and then have a single hanging point down the

minutes, double-hanging point and the lifting arm and balance arm fused hammerhead-type level

luffing jib car. Single hanging point is statically determinate structure, twin-lift point is statically

indeterminate structure. Hammerhead-type trolley level luffing jib installed at the tower top

Zhuangruo hammer, shaft, such as hammer handle, no spire, it is also known as flat head style.

Flat-style of making structure simpler and more conducive to the force, to reduce weight and

simplify construction and so on. Most used car luffing jib equilateral triangle cross-section.

Tower structure, also known as the tower is the main body of the tower crane structure. Now adopt

a square cross-section of tower crane, application of a broader cross-section dimensions are: 1.2m

× 1.2m, 1.4m × 1.4m, 1.6m × 1.6m, 2.0m × 2.0m; tower section used the standard size is 2.5m and

the 3m. Tower sections used in the standard connection method is to cover the most widely used

set of stud bolt connection and connection, followed by the pin connection and flashboard pin

socket connection. Standards Section has the overall standards of style tower-type tower sections

and assembled the standard sections, the latter high precision machining, production difficult, but

the stacking area is small, less freight. Ladder tower section must be set so that driver and

mechanic from top to bottom. Ladder width of not less than 500mm, ladder step spacing of not

more than 300mm, set up a guard ring for each 500mm. When the ladder height of more than 10m,

the ladder should be sub-switching, the switching office to install a closed platform.

Spire function is to bear arm and balance arm Cord Cord coming from the upper load, and through

rotating tower, turret, bearings and other structural components-style passing directly through the

turret to the tower structure. Since l have truncated conical tower column, forward or backward

truncated cone column, Renzi Jia style and bracing Shelf.

Any slewing tower cranes are required to set up a balance weight, its function is to balance the

weight bearing, which constitute the design required by the role of torque in the opposite direction

and lifting the balance of torque. In addition to balance the weight, but also often installed in its

rear lifting mechanism. Lifting bodies are placed, together with the balance weight arm in

balancing the tail end of a re-allocation of the Department can play a role, two rope reel and the

spire increase the distance between the guide wheel to facilitate the rope around and avoid the

occurrence of emission the phenomenon of chaos rope. Balance the weight and balance amount is

inversely proportional to the relationship between the length of the arm, while the balance of arm

length and boom there is a certain percentage of the length of the relationship in between. Balance

the considerable amount of heavy, light tower crane usually at least 3 ~ 4t, heavy to almost 30t.

Balance weight can be made of cast iron or reinforced concrete: the high cost of the former

process, but the small size wind; the latter were large in size to the stability of the windward big

negative, but the simple economy, it is generally use this. The usual practice is to balance the

emphasis on pre-divided into 2 http://www.pohu-drive.com ~ 3 kinds of specifications, width,

thickness of the same, but the height should be adjusted to match the use of different arm lengths.

(B), the tower crane spare parts

Each tower crane must be used in many kinds of lifting parts, of which the largest number of

technical requirements are strict and complicated rope specifications. Tower crane wire rope used

in accordance with different functions are: lifting wire rope, rope luffing, jib ropes, balance the

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摘要：

英文原文TowerCraneBoommountedontheupperpartoftherotationofthetalltowercrane.Operatingalargespace,mainlyusedforhousingconstructionmaterialsintheverticalandhorizontaltransportationandinstallationofbuildingcomponents.Fromthemetalstructure,workingbodiesandtheelectricalsystemconsistsofthreeparts.Metalstructu...

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