1. Foundation Preparation before Tower Crane Installation There are two types of foundations for tower cranes: track foundation and concrete foundation. The construction of the track foundation should meet the following requirements:(1) Subgrade Bearing Capacity: For light – duty tower cranes (with a lifting capacity of less than 30kN), it should be 60 – 100kPa; […]
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A certain company undertook a project with 30 floors above the ground, a building height of 95m, and a construction area of 32,000 square meters. A QTZ125(ZX6016) tower crane provided by the developer was used. This tower crane did not come with a random operation manual. It was installed by embedding 16-M36 bolts for tensioning, […]
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Some fast – assembly lower – slewing tower cranes with telescopic tower – body structures and horizontal booms (such as the QT16 – type tower crane) mostly complete the erection and installation according to this method. The installation procedure is as follows: (1) Setting up the Outriggers Pull out the four outriggers and lower the […]
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Introduction With the rapid development of construction technology and the increasing demands for safety, effektivitet, and energy conservation, tower cranes play an essential role in modern construction projects. Among the key components of tower cranes, the hoisting mechanism is crucial for lifting and lowering loads safely and efficiently. Traditional hoisting mechanisms typically rely on mechanical […]
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As a type of lifting and transportation machinery, large tower cranes are prone to rust and corrosion due to various unresolved issues. The steel structures of large tower cranes are particularly susceptible to rusting when exposed to air for extended periods without adequate protective measures. This corrosion occurs when the steel structure reacts chemically with […]
20
Jan
Jan
Tårnkranoperationer indebærer betydelige risici, især under løfteopgaver. For at minimere ulykker og sikre sikker drift, følgende forebyggende foranstaltninger anbefales: 1. Forbedring af sikkerhedsbevidsthedsmål: Styrk arbejdernes bevidsthed om sikkerhedsprotokoller. Fremme overholdelse af etablerede regler for at reducere usikker adfærd. Implementering: Gennemfør regelmæssige sikkerhedstræningssessioner. Integrer sikkerhedsøvelser i rutineoperationer […]
17
Jan
Jan
For at justere rotationshastigheden på en asynkron motor, Vi kan starte med at ændre følgende tre parametre: Antallet af stangpar af statorviklingen, Motorens slipforhold, og hyppigheden af strømforsyningen. Ændring af den første parameter påvirker den synkrone hastighed. Ændring af den anden parameter muliggør kun hastighed […]
17
Jan
Jan
Introduktion til Tower Crane Reducer Housings Reducer Housing of a Tower Crane fungerer som en kritisk strukturel komponent, Tilvejebringelse af støtte og beskyttelse til gearene og mekaniske dele indeni. Fremstillet primært af støbejern, typisk af klasse HT150, Disse huse er designet til at modstå betydelig mekanisk stress under drift. Imidlertid, På grund af langvarig brug, […]
16
Jan
Jan
jeg. Køb (Leje) af tårnkraner 1. Køb af tårnkraner, når du køber en tårnkran, Det skal købes fra en professionel producent med en gyldig produktionslicens. Producenten skal levere tekniske dokumenter, såsom certifikat for hele maskiner, Kvalitetsgaranti til forbindelsesbolte med høj styrke, Kvalitetsgaranti for hejsning af trådtov, Kvalitetsgarantier for […]
12
Jan
Jan
Tower cranes are large-scale hoisting machinery commonly used in building construction. Due to the structural characteristics of tower cranes, the tower body bears relatively large eccentric bending moments. Derfor, their installation and dismantling require strong technical skills, and safety management is rather difficult. A slight oversight can lead to major accidents with the destruction of […]
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