1. Maandalizi ya Msingi Kabla ya Ufungaji wa Mnara wa Mnara Kuna aina mbili za misingi ya cranes za mnara: Fuatilia msingi na msingi wa zege. Ujenzi wa msingi wa kufuatilia unapaswa kukidhi mahitaji yafuatayo:(1) Uwezo wa kuzaa: Kwa mwanga – Ushuru wa mnara wa ushuru (na uwezo wa kuinua chini ya 30kN), inapaswa kuwa 60 – 100KPA; […]
27
Februari
Februari
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, […]
27
Februari
Februari
Baadhi ya haraka – mkutano wa chini – Mnara wa mnara ulio na mnara wa telescopic – miundo ya mwili na booms za usawa (kama QT16 – Aina ya mnara wa mnara) Kamilisha muundo na usanikishaji kulingana na njia hii. Utaratibu wa ufungaji ni kama ifuatavyo: (1) Kuweka nje Outrigger kuvuta nje nne nje na kupunguza […]
18
Februari
Februari
Introduction With the rapid development of construction technology and the increasing demands for safety, efficiency, 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
Februari
Februari
Kama aina ya mashine za kuinua na usafirishaji, Cranes kubwa za mnara hukabiliwa na kutu na kutu kwa sababu ya maswala kadhaa ambayo hayajatatuliwa. Miundo ya chuma ya cranes kubwa za mnara hushambuliwa sana na kutu wakati hufunuliwa na hewa kwa muda mrefu bila hatua za kutosha za kinga. Kutu hii hufanyika wakati muundo wa chuma humenyuka kemikali na […]
20
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. Walakini, 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. Kwa hivyo, 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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