1. Paratoi Sylfaen Cyn Gosod Craen Twr Mae dau fath o sylfeini ar gyfer craeniau twr: Sefydliad Trac a Sefydliad Concrit. Dylai'r gwaith o adeiladu sylfaen y trac fodloni'r gofynion canlynol:(1) Israddio capasiti dwyn: Am olau – craeniau twr dyletswydd (gyda chynhwysedd codi o lai na 30kn), dylai fod 60 – 100kpa; […]
27
Chwef
Chwef
Ymgymerodd cwmni penodol â phrosiect gyda 30 lloriau uwchben y ddaear, uchder adeilad o 95m, ac ardal adeiladu o 32,000 metrau. A qtz125(ZX6016) Defnyddiwyd craen twr a ddarparwyd gan y datblygwr. Ni ddaeth y craen twr hwn gyda llawlyfr gweithredu ar hap. Fe'i gosodwyd trwy ymgorffori bolltau 16-m36 ar gyfer tensiwn, […]
27
Chwef
Chwef
Rhai yn gyflym – Cynulliad yn is – craeniau twr slewing gyda thwr telesgopig – strwythurau'r corff a ffyniant llorweddol (megis y qt16 – Teipiwch graen twr) Cwblhewch y codiad a'r gosodiad yn bennaf yn ôl y dull hwn. Mae'r weithdrefn osod fel a ganlyn: (1) Sefydlu'r Outriggers Tynnwch y pedwar allfa allan a gostwng y […]
18
Chwef
Chwef
Introduction With the rapid development of construction technology and the increasing demands for safety, effeithlonrwydd, 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 […]
14
Chwef
Chwef
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 […]
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Jan
Jan
Tower crane operations involve significant risks, particularly during lifting tasks. To minimize accidents and ensure safe operation, the following preventive measures are recommended: 1. Enhancing Safety Awareness Objective: Strengthen workers’ awareness of safety protocols. Promote adherence to established regulations to reduce unsafe behaviors. Implementation: Conduct regular safety training sessions. Integrate safety drills into routine operations […]
17
Jan
Jan
To adjust the rotational speed of an asynchronous motor, we can start with changing the following three parameters: the number of pole pairs of the stator winding, the slip ratio of the motor, and the frequency of the power supply. Changing the first parameter affects the synchronous speed. Changing the second parameter only enables speed […]
17
Jan
Jan
Introduction to Tower Crane Reducer Housings The reducer housing of a tower crane serves as a critical structural component, providing support and protection to the gears and mechanical parts inside. Manufactured primarily from cast iron, typically of grade HT150, these housings are designed to withstand significant mechanical stress during operation. Fodd bynnag, due to prolonged usage, […]
16
Jan
Jan
i. Purchase (Rental) of Tower Cranes 1. Purchase of Tower Cranes When purchasing a tower crane, it must be bought from a professional manufacturer with a valid production license. The manufacturer should provide technical documents such as the whole-machine certificate, quality guarantee for high-strength connecting bolts, quality guarantee for hoisting wire ropes, quality guarantees 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. Felly, 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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