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. Therefore, 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 […]
11
Jan
Jan
The winter maintenance of construction machinery is of great significance. Especially in the northern regions where winters are long and the temperature remains low for extended periods. When construction machinery is used in winter, the cold climate can easily lead to difficulties in starting internal combustion engines, freezing of cooling water and electrolyte, intensified wear […]
10
Jan
Jan
The reasons for the downward deflection of the main girder of overhead cranes are multifaceted and should be analyzed according to specific circumstances. Generally speaking, issues can arise from design, manufacturing, transportation, installation, and use. (1) The Impact of Unreasonable DesignIn the past, China followed the Soviet standards. The static stiffness of the main girder […]
31
Dec
Dec
Final Drive The final drive is generally used to change the direction of transmission, reduce the rotational speed, increase the torque, and ensure that the vehicle has sufficient driving force and an appropriate speed. There are many types of final drives, including single-stage, double-stage, two-speed, and wheel-side reducers. Single-stage Final Drive: A device that achieves […]
31
Dec
Dec
A screw jack, also known as a mechanical jack, is a device that uses the transmission of a screw pair driven by human power, with the screw rod or nut sleeve serving as the lifting component. An ordinary screw jack supports heavy objects by means of the self-locking function of the screw thread. It has […]
31
Dec
Dec
As we all know, new cars have a certain running-in period. The maintenance and care during this period can not only extend the service life of the vehicle but also bring benefits in many aspects such as driving safety. Today, I’d like to invite experienced drivers to share with you how to maintain a new […]
31
Dec
Dec
1. The lift fails to ascend or has weak ascending force (1) The pressure adjustment of the relief valve does not meet the requirements Adjust the pressure to the required value. The relief valve plays a crucial role in controlling the hydraulic pressure within the lift system. If it’s not set correctly, the pressure might […]
31
Dec
Dec
Fixed lift products can be roughly classified into several types according to their operation modes, including scissor lifts, double-scissor lifts, guide rail lifts, telescopic cylinder lifts, and wall-mounted lifts. Scissor Lifts Scissor lift fixed lifts are specialized equipment widely used for high-altitude operations. Their scissor mechanical structure endows the lifting platform with high stability after […]
31
Dec
Dec
Tyres are the only components that come into contact with the ground during driving. They may seem unremarkable and are often dirty, but poor maintenance can often be a potential hidden danger for accidents. As the ancients said, “Read ten thousand books and travel ten thousand miles.” However, many car owners don’t have such a […]
31
Dec
Dec
Brake shoes, commonly known as brake pads, are consumable items. They gradually wear out during use. When they are worn to the limit position, they must be replaced; otherwise, the braking effect will be reduced, and even safety accidents may occur. Brake shoes are closely related to life safety and must be treated with great […]