Choosing the appropriate strength of the steel wire rope is an important link to ensure the safe operation of the tower crane and improve work efficiency. Here are some key points for selecting the appropriate strength of steel wire ropes:

1. Reference standards: according to national standards and relevant industry specifications, such as Technical Conditions for Tower crane (GB 10055-2015) and Steel Wire Rope Inspection Procedures (GB/T 8918-2014), understand the relevant requirements for steel wire rope strength.

2. Maximum working load: Determine the working load of the tower crane under maximum working conditions. The working load includes load weight, working range, and working environment. Ensure that the strength of the steel wire rope meets at least the maximum working load requirements of the tower crane.

3. Coefficient safety rate: considering the safety requirements of tower crane operation, select the appropriate strength according to the Factor of safety given in the national standards or industry specifications. The Factor of safety is generally the ratio of the design working load to the working strength of the wire rope, usually 8 to 10.

4. Steel wire rope material: The strength of the steel wire rope depends on its material and manufacturing process. Common steel wire rope materials include ordinary carbon steel, alloy steel, and stainless steel. Select the appropriate steel wire rope material based on the specific working environment and requirements.

5. Fiber core and steel core: The core of a steel wire rope can be made of fiber material or steel core. Fiber core steel wire rope has good flexibility and corrosion resistance, suitable for use in some special environments; Steel core wire ropes, on the other hand, have higher strength and wear resistance, making them suitable for most working conditions.

6. Wear resistance and corrosion resistance: Based on the working environment, consider the wear resistance and corrosion performance of the steel wire rope. In severe wear or corrosion conditions, it is usually necessary to choose steel wire ropes with higher strength and wear or corrosion protection measures.

7. Comprehensive consideration: Take into account the above factors and consult with the wire rope manufacturer or professional engineer for advice. They can provide appropriate steel wire rope strength choices based on specific usage conditions and needs.

It should be emphasized that the selection of appropriate steel wire rope strength requires a comprehensive judgment based on specific working conditions, safety requirements, and relevant specifications. If you have any questions about choosing the strength of the steel wire rope, it is recommended to consult a professional engineer or a qualified unit engaged in tower cranes. They will be able to provide more accurate and specific guidance and suggestions based on specific situations. At the same time, regularly inspect, maintain, and replace the steel wire rope to ensure the safety and efficiency of tower crane operation.