مقارنة بين رافعة علوية كهربائية بعربة ونش ونش مفتوحة بعربة: دليل اختيار مشاريع الرفع الصناعية

In the selection of industrial lifting equipment, the type of hoisting mechanism in an رافعة علوية مزدوجة العارضة directly affects the crane’s structural configuration, service class, operating costs, and adaptability to workshop conditions.

In practical projects, electric hoist trolley overhead cranes and open winch trolley overhead cranes are the two most common solutions.

Although both options may have the same rated lifting capacity, there are significant differences in structure, performance, and applicable working conditions. This article provides a systematic comparison of the two types of overhead cranes across key dimensions, helping users make informed decisions based on actual working conditions.

Service Class and Applicable Working Conditions

The service class (Duty Class) of an overhead crane is used to comprehensively evaluate the loads, lifting frequency, and operating time the equipment will endure throughout its service life. It is not only related to the rated lifting capacity but also closely influenced by factors such as the number of lifts per day, average load level (full or partial load), continuous operating time, and expected service life.

A higher duty class indicates that the crane is designed to handle more frequent, heavier, and longer-duration operations. Correspondingly, its structural strength, drive system, and safety redundancy requirements are higher.

Hoisting Mechanism Comparison: Electric Hoist Trolley vs Open Winch Trolley

Price Comparison: Cost Differences Under the Same Specifications

Prerequisites: Rated lifting capacity, span, lifting height, and basic configurations are identical.

Basic Operating Parameters (Same Conditions)

• Lifting capacity: 16 t
• Span: 10.5 m
• Lifting height: 17 m

Overall Price and Performance Comparison

Key Cost Impact Factors

• The electric hoist trolley itself has a lower unit cost
• Hoist trolley overhead cranes are lighter in overall weight, reducing steel consumption for main girders and supporting structures
• Simpler structure of hoist trolley overhead cranes results in lower transportation and installation costs
• Winch trolley overhead cranes require additional platforms and walkways, increasing overall cost

Selection Conclusion

The selection of an overhead crane should not be based solely on rated lifting capacity. Instead, it should comprehensively consider the hoisting mechanism design, duty class, operating intensity, workshop conditions, and project budget.

When the duty class is A3 and the operating intensity and working frequency are moderate, an electric hoist trolley overhead crane is the more economical and practical choice.

When the project requires a higher duty class, faster hoisting speeds, or greater lifting capacity, a wire rope (winch) trolley overhead crane can provide superior performance and adaptability.

Properly matching the hoisting mechanism type helps achieve the optimal balance between equipment investment and long-term operating efficiency, while ensuring safety and reliability.

سيندي

واتساب: +86 191 3738 6654

بريد إلكتروني: cindywang@hndfcrane.com

أنا سيندي، ولدي 10 سنوات من الخبرة العملية في صناعة الرافعات واكتسبت ثروة من المعرفة المهنية. لقد اخترت الرافعات المرضية لأكثر من 500 عميل. إذا كانت لديك أي احتياجات أو أسئلة حول الرافعات، فلا تتردد في الاتصال بي، وسأستخدم خبرتي وخبرتي العملية لمساعدتك في حل المشكلة!