1. Structure Types Screw jacks are classified into different structure types, which play a crucial role in determining their operational characteristics and application scenarios. Understanding these structure types is essential for proper selection and utilization of screw jacks in various mechanical systems. Tipo 1: In this structure type, the screw rod simultaneously performs a rotational […]
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Fevereiro
Fevereiro
I. Main Technical Parameters of the Crane The technical parameters of a crane represent its working capacity and serve as the fundamental basis for designing the crane. The main technical parameters of a crane include: lifting capacity, lifting height, amplitude, operating speed of the mechanism, productivity, slewing radius, and lifting torque. (I) Lifting Capacity The […]
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Fevereiro
Fevereiro
Truss cranes are widely used in the bridge erection construction sites of construction enterprises due to their characteristics such as flexible lifting, simple operation, and convenient installation and disassembly. Portanto, ensuring the safe operation of truss cranes plays a crucial role in improving work efficiency, reducing production costs, preventing casualties, and establishing a good corporate […]
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Fevereiro
Fevereiro
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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Fevereiro
Fevereiro
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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Fevereiro
Fevereiro
The performance and evaluation methods of hydraulic oils are crucial to ensure the optimal functioning of hydraulic systems, which are widely used in industrial, construção, and automotive machinery. Hydraulic oil must possess several key properties to meet the demanding requirements of modern hydraulic systems, which are becoming more compact, high-pressure, and automated. This article outlines […]
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Fevereiro
Fevereiro
The operation of lifting electromagnets can be controlled and optimized in terms of both acceleration and delay. These modifications can be achieved through changes in the structural design and additional circuit components. Below is a detailed explanation of methods to accelerate and delay the operation of lifting electromagnetic cranes, including their advantages and working principles. […]
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Fevereiro
Fevereiro
In the operation of three-phase AC motors, abnormal vibrations can occur due to various factors. These vibrations not only affect the normal operation and performance of the motor but also may lead to equipment damage and safety hazards. Portanto, it is crucial to accurately identify the abnormal vibration phenomena and analyze their causes. This article […]
Personnel engaged in suspended high-altitude operations should fasten their safety belts securely. The selection and wearing of safety belts should comply with the relevant provisions of the current national standard “Safety Belt” (GB6095). Safety belts are crucial for protecting the lives of workers in high-altitude situations. They are designed to prevent falls and reduce the […]
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Fevereiro
Fevereiro
Electric suspended platforms are commonly used in various construction projects for tasks that require working at heights, such as facade cleaning, painting, and installation of external equipment. No entanto, as with any equipment, the safe and efficient use of these platforms requires careful attention to detail and strict adherence to certain guidelines. Below are the seven […]