(1) During the initial start-up and operation of the scraper conveyor, special attention should be paid to checking the tightness of the scraper chain. As the conveyor runs, the distance between the chutes will gradually decrease. If the chain is too loose, issues like chain jamming, chain skipping, chain breaking, and the chain derailing may […]
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 […]
19
Jan
Jan
Elevators are indispensable construction equipment for vertical transportation in building projects. In recent years, serious accidents involving construction elevators have occurred from time to time. The fundamental reason lies in the inadequate and unscientific management measures, which are the root cause of potential accident hazards in construction elevators. Taking the SC-type construction elevator as an […]
19
Jan
Jan
Steel wire ropes are versatile mechanical components whose types, structures, materials, and manufacturing processes depend on their intended application. Typically, steel wire ropes are made using round-section carbon steel wires with diameters ranging from 0.1 mm to 6.0 mm. For sealed and semi-sealed wire ropes, Z-shaped and other specially shaped wires are used to enhance […]
18
Jan
Jan
For newly installed electric hoists or those reinstalled after disassembly and inspection, several no-load trial runs should be carried out first. However, it is strictly forbidden to power on for a trial run before the installation is completed. During the installation process, a series of preparatory work needs to be done meticulously. The installation site […]
18
Jan
Jan
1. Low Voltage Check the starter potential when the motor is under load. The allowable voltage fluctuation range is ±10%. Low voltage can severely impede the normal operation of the lifting platform. The electrical components, especially the motor, rely on a certain voltage level to generate sufficient torque. If the voltage drops below the acceptable […]
18
Jan
Jan
The proper selection of steel wire ropes is crucial as it directly impacts the rope’s service life, prevents structural deformation, breakage, and unexpected failures. To ensure safe and efficient operation, the following principles are recommended: 1. When to Use Non-Rotating Steel Wire Ropes Non-rotating steel wire ropes are ideal for the following scenarios: Single Lifting […]
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. However, 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 […]