What does crane luffing mean?
As an indispensable heavy mechanical equipment in modern engineering construction, cranes' operation and functional terms are crucial to practitioners. Among them, "amplitude" is one of the core concepts in crane operation. This article will combine the hot topics and hot content on the entire network in the past 10 days, analyze the meaning, classification and application scenarios of crane amplitude in detail, and present relevant information in the form of structured data.
1. Definition of crane luffing
Crane luffing refers to adjusting the horizontal distance (i.e. amplitude) between the hook and the crane's rotation center by changing the elevation angle or horizontal distance of the boom to meet the needs of different operating positions. The luffing action directly affects the operating range and efficiency of the crane and is a key link in the operation.
2. Classification of variable amplitude methods
| Luffing type | Working principle | Applicable models |
|---|---|---|
| Pitch amplitude | Changing the boom elevation angle by hydraulic cylinder or wire rope | Truck crane, crawler crane |
| Car luffing | The load-carrying trolley moves along the horizontal boom | tower crane |
| Combination amplitude | Elevation angle and trolley compound motion | Large port crane |
3. Correlation analysis of hot topics in the past 10 days
| Hot search keywords | Related content | Discuss the popularity index |
|---|---|---|
| Wind power installation crane | Breakthrough in large-height variable amplitude technology | 85% |
| Smart construction site | Amplitude automatic control system | 78% |
| crane accident | Variable amplitude limiter failure case | 92% |
4. Technical parameter comparison table
| Parameter name | Standard value range | safety regulations |
|---|---|---|
| Maximum working range | 30-120 meters (depending on the model) | GB/T 3811-2008 |
| Luffing speed | 0.5-2 m/min | ISO 4306 |
| minimum amplitude | ≥3 meters | TSG Q7015 |
5. Operation precautions
1. The load must be kept stable during the amplitude change process, and emergency stops and starts are prohibited.
2. When the wind speed exceeds 12m/s, the luffing operation should be stopped.
3. Regularly check the wear of the luffing wire rope
4. The parameters of the torque limiter need to be calculated strictly when changing the amplitude with load.
6. Industry development trends
According to the latest industry report, the market penetration rate of intelligent luffing systems has reached 34% in 2023, an increase of 12 percentage points from last year. New technologies such as remote control and AI automatic amplitude compensation are changing the traditional luffing operation mode, and the number of relevant topics discussed in professional forums exceeds 1,500 per week.
From the above structured data analysis, it can be seen that crane amplitude is not only a basic operating concept, but also closely related to safety control and technological innovation. A thorough understanding of the principles and specifications of luffing is of great significance to improving operating efficiency and preventing accidents.
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