I. Introduction Due to the relatively long strokes of load lifting and lowering, boom extension and retraction, and boom luffing in mobile cranes, the acceleration phenomenon caused by the force of gravity during the downward movement of the mechanisms or loads is a rather prominent issue. To address this, mobile cranes typically employ the following […]
28
Nov
Nov
I. Failure Phenomena of Couplings Severe Wear on Gear Teeth Surfaces: One of the common failure phenomena of couplings is the severe wear on the gear teeth surfaces. This wear can significantly affect the meshing and transmission performance of the coupling. When the gear teeth surfaces are worn, the smooth engagement between the gears is […]
27
Nov
Nov
I. Introduction to Different Types of Jacks There are various types of jacks, mainly including claw jacks, hydraulic jacks, and screw jacks. Each type has its own unique characteristics, which result in different advantages and disadvantages. Understanding these can help users make more appropriate choices according to specific application scenarios. II. Claw Jacks Advantages Integrally […]
26
Nov
Nov
The installation and erection of cranes, particularly tower cranes, is a critical process that demands strict adherence to safety regulations and operational procedures. The following are the key requirements and guidelines for the proper installation and erection of cranes, ensuring safety, efficiency, and reliability. 1. Understanding Crane Specifications Before beginning the installation process, it is […]
26
Nov
Nov
I. Pre-Operation Inspection and Load Limitation Thorough Inspection of Components: Before using a manual chain hoist, the operator must conduct a detailed inspection of each and every component and part, including each link of the chain. Only when everything is in good condition can it be put into use. This initial inspection is of crucial […]
I. Introduction Crane cables play a vital role in the operation of cranes, ensuring the transmission of power and signals for various functions. However, different arrangements and operating conditions of the cables require specific attention to ensure their safe and efficient use. This article will discuss in detail the precautions for using crane cables when […]
25
Nov
Nov
Lifting slings are widely used in lifting operations due to their many advantages, including being lightweight, easy to use, non-damaging to the surfaces of the lifted objects, providing smooth and stable lifting, offering high strength and safety, and being resistant to corrosion and wear. They are also highly efficient, cost-effective, and available in bright colors […]
25
Nov
Nov
I. Personal Protection Measures Proper Use of Safety Harnesses by Workers at Heights: Workers engaged in suspended work at heights should firmly fasten their safety harnesses. The selection and wearing of safety harnesses should comply with the relevant provisions of the current national standard “Safety Harnesses” (GB6095). When working at heights, the safety of workers […]
24
Nov
Nov
I. Introduction Crane wheel rail gauging is a common problem that can significantly affect the normal operation and service life of cranes. When wheels deviate from their proper running tracks and start to “gnaw” on the rails, it not only causes abnormal wear on the wheels and rails but also poses potential safety hazards. Therefore, […]
24
Nov
Nov
Tower cranes with telescopic tower structures and horizontal jib configurations, such as the QT16-type quick-assembly lower slewing tower crane, often follow a sequential procedure for installation. Below is a detailed step-by-step guide: 1. Stabilizing the Base Frame Extend all four support legs and lower the support jacks to lift the tires off the ground. Adjust […]