Views: 1 Author: Site Editor Publish Time: 2026-07-22 Origin: Site
Q1: What is the primary function of the SYM SD3020-10 Derrick Crane?
A: The SD3020-10 Derrick Crane (frequently referred to as a rooftop crane) is specifically built for high-altitude dismantling operations. Once an inner climbing tower crane completes its building construction cycle, the SD3020-10 is mounted directly on the roof to disassemble the tower crane section by section and safely lower the components to the ground.
Q2: Why is a rooftop derrick crane essential for modern skyscraper construction?
A: As supertall skyscrapers grow higher, conventional ground-based mobile cranes can no longer reach or safely dismantle internal tower cranes at extreme heights. The rooftop derrick crane bridges this critical gap, offering controlled heavy lifting directly from the roof, saving huge operational costs and overcoming tight urban site constraints.
Q3: What are the key performance specifications of the SD3020-10 model?
A: Here is a quick technical summary:
1. Max Load Capacity: 10 Tonnes (at 11m–11.5m operating radius)
2. Max Jib Reach: 30 Metres
3. Tip Load at 30m: 2.0 Tonnes
4. Rope Drum Capacity: Over 700m (30kW Hoist Winch)
5. Self-Weight & Counterweight: 21t Self-Weight | 5t Counterweight
6. Certifications: CE & EAC Certified for international safety compliance
Q4: In what construction scenarios does the SD3020-10 perform best?
A: It is ideal for:
1. Tower Crane Dismantling: Safe removal of inner climbing cranes from high-rise roofs.
2. Heavy Rooftop Installations: Lifting massive HVAC units, steel frame crowns, or glass structures onto building rooftops.
3. Space-Restricted Urban Sites: Project sites with zero ground footprint for large mobile cranes.
Q5: Why source Derrick Cranes & Spare Parts from our factory?
A: As a dedicated manufacturer of tower cranes, hoists, and replacement spare parts, we provide distinct market advantages:
1. Complete Product Lineup: We supply a full spectrum of rooftop derrick cranes ranging from 4t to 24t capacities.
2. Global Safety Compliance: Fully CE and EAC certified, meeting strict European and Eurasian safety standards.
3. One-Stop OEM Spare Parts: We manufacture replacement winches, luffing/slewing mechanisms, wire ropes, and electric control boxes to minimize jobsite downtime.
4. Tailored Engineering: Flexible foundation configurations (3.465m to 5.3m span options) to adapt to various roof structural load limitations.
Frequently Asked Questions (FAQ)
Q: How is the SD3020-10 crane transported up to the rooftop?
A: It features modular, compact steel structures designed to fit inside standard construction passenger/freight hoists or be hoisted up by the tower crane prior to its final disassembly.
Q: Can the crane handle deep lowering tasks for supertall buildings?
A: Yes, the 30kW 40LVF hoist winch comes equipped with a large-capacity drum holding over 700 metres of steel wire rope, easily supporting high-altitude lowering.
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