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 […]
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
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 […]
23
Nov
Nov
In lifting sling operations, two of the most critical aspects are the selection of lifting points and the proper binding methods for objects. Correct choices in these areas ensure stability, safety, and prevent accidents or damage during lifting operations. Below is a comprehensive guide to selecting lifting points based on the type of object and […]
22
Nov
Nov
I. General Provisions Site Awareness: Before commencing lifting operations, operators must thoroughly assess the working environment, travel routes, building structures, and the weight of the objects to be handled. Operation Signals: Operators must sound a warning before initiating actions such as hoisting, slewing, luffing, or traversing. All signals from the designated signal person must be […]
10
Nov
Nov
Truck-mounted cranes are versatile and powerful machines utilized across various construction and lifting operations. However, their effective and safe operation requires strict adherence to safety protocols. Below are comprehensive safety operation considerations that should be followed to ensure the safety of operators, bystanders, and the equipment itself. 1. Adhere to Rated Lifting Load Limits Always […]
09
Nov
Nov
The crane overload limiter is a crucial safety device designed to protect cranes from operating beyond their rated capacity, thereby preventing accidents and ensuring the safety of personnel and equipment. It employs various protection mechanisms, including alarms and automatic disconnections, to manage potential overload situations. Below are the primary functions of the crane overload limiter, […]