What is lifting torque
Lifting torque is an important concept in engineering mechanics and mechanical design, and plays a key role in the design and operation of lifting machinery (such as tower cranes, cranes, etc.). It reflects the stability and safety of lifting equipment when lifting heavy objects. This article will combine popular topics and hot contents across the network for the past 10 days to introduce in detail the definition, calculation formula, influencing factors and practical applications of lifting torque.
1. Definition of lifting torque
Moment of Load refers to the product of the weight of the weight of the weight and the length of the lifting arm when lifting a heavy object. Its mathematical expression is:
Lifting torque = weight × lifting boom length
The units of lifting torque are usually "ton·m" (t·m) or "thousand N·m" (kN·m). It is an important indicator to measure the stability of lifting equipment during lifting. If the lifting torque exceeds the rated value of the equipment, it may cause the equipment to overturn or damage to the structure.
2. Calculation formula for lifting torque
The calculation formula for lifting torque is as follows:
| parameter | symbol | unit | illustrate |
|---|---|---|---|
| Lifting torque | M | t·m or kN·m | The product of weight of heavy objects and length of boom |
| weight | W | t or kN | The weight of lifted weight |
| Boom Length | L | m | Horizontal projection length of the boom |
3. Factors affecting lifting torque
The lifting torque is affected by a variety of factors, mainly including:
1.Weight of heavy objects: The heavier the heavy object, the greater the lifting torque.
2.Length of the boom: The longer the lifting boom, the greater the lifting torque.
3.Stability of cranes: The crane’s legs, counterweight and foundation conditions will affect the limit value of the lifting torque.
4.Environmental factors: External conditions such as wind force and ground slope will also affect the lifting torque.
4. Practical application of lifting torque
The lifting torque is of great significance in the design and operation of lifting machinery:
1.Equipment selection: Select appropriate lifting equipment according to project needs to ensure that its rated lifting torque meets the operating requirements.
2.Safe operation: Operators must strictly monitor the lifting torque to avoid overload or overload operations.
3.Accident prevention: Excessive lifting torque is one of the main reasons for crane overturning. Reasonable control of lifting torque can effectively prevent accidents.
5. The relationship between popular topics on the entire network in the past 10 days and lifting torque
Recently, the safety issues of lifting machinery have become a hot topic. The following are popular content related to lifting torque across the entire network in the past 10 days:
| date | topic | Related content |
|---|---|---|
| 2023-11-01 | Tower crane overturning accident at a construction site | The investigation found that lifting torque exceeded the main reason |
| 2023-11-03 | New smart crane release | Equipped with real-time lifting torque monitoring system |
| 2023-11-05 | Updated safety specifications for lifting machinery | Clarify the calculation and limit requirements of lifting torque |
| 2023-11-08 | A large bridge hoisting project | Use multiple cranes to work together to accurately control the lifting torque |
6. Summary
Lifting torque is the core parameter in the design and operation of lifting machinery, which is directly related to the safety and stability of the equipment. By reasonably calculating and controlling lifting torque, accidents can be effectively prevented and operating efficiency can be improved. Recently, popular topics across the network also reflect the industry's concern about lifting torque. With the development of technology in the future, intelligent monitoring systems will further improve the safety of lifting operations.
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